Added MesaLib-7.6

67 files changed, 35429 insertions, 0 deletions

diff --git a/mesalib/src/mesa/shader/slang/descrip.mms b/mesalib/src/mesa/shader/slang/descrip.mms
new file mode 100644
index 000000000..6eefbcf5b
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/descrip.mms
@@ -0,0 +1,68 @@
+# Makefile for core library for VMS
+# contributed by Jouk Jansen  joukj@hrem.nano.tudelft.nl
+# Last revision : 3 October 2007
+
+.first
+	define gl [----.include.gl]
+	define math [--.math]
+	define swrast [--.swrast]
+	define array_cache [--.array_cache]
+	define main [--.main]
+	define glapi [--.glapi]
+	define shader [--.shader]
+
+.include [----]mms-config.
+
+##### MACROS #####
+
+VPATH = RCS
+
+INCDIR = [----.include],[--.main],[--.glapi],[-.slang],[-.grammar],[-]
+LIBDIR = [----.lib]
+CFLAGS = /include=($(INCDIR),[])/define=(PTHREADS=1)/name=(as_is,short)/float=ieee/ieee=denorm
+
+SOURCES = \
+	slang_compile.c,slang_preprocess.c
+
+OBJECTS = slang_builtin.obj,slang_codegen.obj,slang_compile.obj,\
+	slang_compile_function.obj,slang_compile_operation.obj,\
+	slang_compile_struct.obj,slang_compile_variable.obj,slang_emit.obj,\
+	slang_ir.obj,slang_label.obj,slang_library_noise.obj,slang_link.obj,\
+	slang_log.obj,slang_mem.obj,slang_preprocess.obj,slang_print.obj,\
+	slang_simplify.obj,slang_storage.obj,slang_typeinfo.obj,\
+	slang_utility.obj,slang_vartable.obj
+
+##### RULES #####
+
+VERSION=Mesa V3.4
+
+##### TARGETS #####
+# Make the library
+$(LIBDIR)$(GL_LIB) : $(OBJECTS)
+  @ library $(LIBDIR)$(GL_LIB) $(OBJECTS)
+
+clean :
+	purge
+	delete *.obj;*
+
+slang_builtin.obj : slang_builtin.c
+slang_codegen.obj : slang_codegen.c
+slang_compile.obj : slang_compile.c
+slang_compile_function.obj : slang_compile_function.c
+slang_compile_operation.obj : slang_compile_operation.c
+slang_compile_struct.obj : slang_compile_struct.c
+slang_compile_variable.obj : slang_compile_variable.c
+slang_emit.obj : slang_emit.c
+slang_ir.obj : slang_ir.c
+slang_label.obj : slang_label.c
+slang_library_noise.obj : slang_library_noise.c
+slang_link.obj : slang_link.c
+slang_log.obj : slang_log.c
+slang_mem.obj : slang_mem.c
+slang_preprocess.obj : slang_preprocess.c
+slang_print.obj : slang_print.c
+slang_simplify.obj : slang_simplify.c
+slang_storage.obj : slang_storage.c
+slang_typeinfo.obj : slang_typeinfo.c
+slang_utility.obj : slang_utility.c
+slang_vartable.obj : slang_vartable.c
diff --git a/mesalib/src/mesa/shader/slang/library/Makefile b/mesalib/src/mesa/shader/slang/library/Makefile
new file mode 100644
index 000000000..0e03fac2e
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/Makefile
@@ -0,0 +1,81 @@
+# src/mesa/shader/slang/library/Makefile
+
+TOP = ../../../../..
+
+include $(TOP)/configs/current
+
+INCDIR = $(TOP)/include
+
+LIB_DEP = $(TOP)/$(LIB_DIR)/$(GL_LIB_NAME)
+
+#
+# targets
+#
+
+.PHONY: default clean
+
+default: syntax builtin
+
+clean:
+	-rm -f syn_to_c gc_to_bin *_syn.h *_gc.h
+
+syntax: slang_pp_directives_syn.h slang_pp_expression_syn.h slang_shader_syn.h slang_pp_version_syn.h
+
+builtin: builtin_110 builtin_120
+
+#
+# executables
+#
+
+syn_to_c: syn_to_c.c
+	$(CC) syn_to_c.c -o syn_to_c
+
+gc_to_bin: gc_to_bin.c slang_shader_syn.h
+	$(CC) gc_to_bin.c -o gc_to_bin
+
+#
+# syntax scripts
+#
+
+slang_pp_directives_syn.h: syn_to_c slang_pp_directives.syn
+	./syn_to_c slang_pp_directives.syn > slang_pp_directives_syn.h
+
+slang_pp_expression_syn.h: syn_to_c slang_pp_expression.syn
+	./syn_to_c slang_pp_expression.syn > slang_pp_expression_syn.h
+
+slang_shader_syn.h: syn_to_c slang_shader.syn
+	./syn_to_c slang_shader.syn > slang_shader_syn.h
+
+slang_pp_version_syn.h: syn_to_c slang_pp_version.syn
+	./syn_to_c slang_pp_version.syn > slang_pp_version_syn.h
+
+#
+# builtin library sources
+#
+
+builtin_110: slang_common_builtin_gc.h slang_core_gc.h slang_fragment_builtin_gc.h slang_vertex_builtin_gc.h
+
+builtin_120: slang_120_core_gc.h slang_builtin_120_common_gc.h slang_builtin_120_fragment_gc.h
+
+
+slang_120_core_gc.h: gc_to_bin slang_120_core.gc
+	./gc_to_bin 1 slang_120_core.gc slang_120_core_gc.h
+
+slang_builtin_120_common_gc.h: gc_to_bin slang_builtin_120_common.gc
+	./gc_to_bin 1 slang_builtin_120_common.gc slang_builtin_120_common_gc.h
+
+slang_builtin_120_fragment_gc.h: gc_to_bin slang_builtin_120_fragment.gc
+	./gc_to_bin 1 slang_builtin_120_fragment.gc slang_builtin_120_fragment_gc.h
+
+slang_common_builtin_gc.h: gc_to_bin slang_common_builtin.gc
+	./gc_to_bin 1 slang_common_builtin.gc slang_common_builtin_gc.h
+
+slang_core_gc.h: gc_to_bin slang_core.gc
+	./gc_to_bin 1 slang_core.gc slang_core_gc.h
+
+slang_fragment_builtin_gc.h: gc_to_bin slang_fragment_builtin.gc
+	./gc_to_bin 1 slang_fragment_builtin.gc slang_fragment_builtin_gc.h
+
+slang_vertex_builtin_gc.h: gc_to_bin slang_vertex_builtin.gc
+	./gc_to_bin 2 slang_vertex_builtin.gc slang_vertex_builtin_gc.h
+
diff --git a/mesalib/src/mesa/shader/slang/library/gc_to_bin.c b/mesalib/src/mesa/shader/slang/library/gc_to_bin.c
new file mode 100644
index 000000000..8aef7b541
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/gc_to_bin.c
@@ -0,0 +1,85 @@
+#include "../../grammar/grammar_crt.h"
+#include "../../grammar/grammar_crt.c"
+#include <stdlib.h>
+#include <stdio.h>
+
+static const char *slang_shader_syn =
+#include "slang_shader_syn.h"
+;
+
+static int gc_to_bin (grammar id, const char *in, const char *out)
+{
+	FILE *f;
+	byte *source, *prod;
+	unsigned int size, i, line = 0;
+
+	printf ("Precompiling %s\n", in);
+
+	f = fopen (in, "r");
+	if (f == NULL)
+		return 1;
+	fseek (f, 0, SEEK_END);
+	size = ftell (f);
+	fseek (f, 0, SEEK_SET);
+	source = (byte *) grammar_alloc_malloc (size + 1);
+	source[fread (source, 1, size, f)] = '\0';
+	fclose (f);
+
+	if (!grammar_fast_check (id, source, &prod, &size, 65536))
+	{
+		grammar_alloc_free (source);
+		return 1;
+	}
+
+	f = fopen (out, "w");
+	fprintf (f, "\n");
+	fprintf (f, "/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */\n");
+	fprintf (f, "/* %s */\n", in);
+	fprintf (f, "\n");
+	for (i = 0; i < size; i++)
+	{
+		unsigned int a;
+		if (prod[i] < 10)
+			a = 1;
+		else if (prod[i] < 100)
+			a = 2;
+		else
+			a = 3;
+		if (i < size - 1)
+			a++;
+		if (line + a >= 100)
+		{
+			fprintf (f, "\n");
+			line = 0;
+		}
+		line += a;
+		fprintf (f, "%d", prod[i]);
+		if (i < size - 1)
+			fprintf (f, ",");
+	}
+	fprintf (f, "\n");
+	fclose (f);
+	grammar_alloc_free (prod);
+   return 0;
+}
+
+int main (int argc, char *argv[])
+{
+   grammar id;
+
+   id = grammar_load_from_text ((const byte *) slang_shader_syn);
+   if (id == 0) {
+      fprintf(stderr, "Error loading grammar from text\n");
+      return 1;
+   }
+   grammar_set_reg8 (id, (const byte *) "parsing_builtin", 1);
+   grammar_set_reg8 (id, (const byte *) "shader_type", atoi (argv[1]));
+   if (gc_to_bin (id, argv[2], argv[3])) {
+      fprintf(stderr, "Error in gc_to_bin %s %s\n", argv[2], argv[3]);
+      grammar_destroy (id);
+      return 1;
+   }
+   grammar_destroy (id);
+   return 0;
+}
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_120_core.gc b/mesalib/src/mesa/shader/slang/library/slang_120_core.gc
new file mode 100644
index 000000000..04c5ec2ec
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_120_core.gc
@@ -0,0 +1,1978 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+//
+// Constructors and operators introduced in GLSL 1.20 - mostly on new
+// (non-square) types of matrices.
+//
+// One important change in the language is that when a matrix is used
+// as an argument to a matrix constructor, it must be the only argument
+// for the constructor. The compiler takes care of it by itself and
+// here we only care to re-introduce constructors for old (square)
+// types of matrices.
+//
+
+//
+// From Shader Spec, ver. 1.20, rev. 6
+//
+
+//// mat2x3: 2 columns of vec3
+
+mat2x3 __constructor(const float f00, const float f10, const float f20,
+                     const float f01, const float f11, const float f21)
+{
+   __retVal[0].x = f00;
+   __retVal[0].y = f10;
+   __retVal[0].z = f20;
+   __retVal[1].x = f01;
+   __retVal[1].y = f11;
+   __retVal[1].z = f21;
+}
+
+mat2x3 __constructor(const float f)
+{
+   __retVal = mat2x3(  f, 0.0, 0.0,
+                     0.0,   f, 0.0);
+}
+
+mat2x3 __constructor(const int  i)
+{
+   const float f = float(i);
+   __retVal = mat2x3(f);
+}
+
+mat2x3 __constructor(const bool b)
+{
+   const float f = float(b);
+   __retVal = mat2x3(f);
+}
+
+mat2x3 __constructor(const vec3 c0, const vec3 c1)
+{
+   __retVal[0] = c0;
+   __retVal[1] = c1;
+}
+
+
+
+//// mat2x4: 2 columns of vec4
+
+mat2x4 __constructor(const float f00, const float f10, const float f20, const float f30,
+                     const float f01, const float f11, const float f21, const float f31)
+{
+   __retVal[0].x = f00;
+   __retVal[0].y = f10;
+   __retVal[0].z = f20;
+   __retVal[0].w = f30;
+   __retVal[1].x = f01;
+   __retVal[1].y = f11;
+   __retVal[1].z = f21;
+   __retVal[1].w = f31;
+}
+
+mat2x4 __constructor(const float f)
+{
+   __retVal = mat2x4(  f, 0.0, 0.0, 0.0,
+                     0.0,   f, 0.0, 0.0);
+}
+
+mat2x4 __constructor(const int i)
+{
+   const float f = float(i);
+   __retVal = mat2x4(f);
+}
+
+mat2x4 __constructor(const bool b)
+{
+   const float f = float(b);
+   __retVal = mat2x4(f);
+}
+
+mat2x4 __constructor(const vec4 c0, const vec4 c1)
+{
+   __retVal[0] = c0;
+   __retVal[1] = c1;
+}
+
+
+
+//// mat3x2: 3 columns of vec2
+
+mat3x2 __constructor(const float f00, const float f10,
+                     const float f01, const float f11,
+                     const float f02, const float f12)
+{
+   __retVal[0].x = f00;
+   __retVal[0].y = f10;
+   __retVal[1].x = f01;
+   __retVal[1].y = f11;
+   __retVal[2].x = f02;
+   __retVal[2].y = f12;
+}
+
+mat3x2 __constructor(const float f)
+{
+   __retVal = mat3x2(  f, 0.0,
+                     0.0,   f,
+                     0.0, 0.0);
+}
+
+mat3x2 __constructor(const int i)
+{
+   const float f = float(i);
+   __retVal = mat3x2(f);
+}
+
+mat3x2 __constructor(const bool b)
+{
+   const float f = float(b);
+   __retVal = mat3x2(f);
+}
+
+mat3x2 __constructor(const vec2 c0, const vec2 c1, const vec2 c2)
+{
+   __retVal[0] = c0;
+   __retVal[1] = c1;
+   __retVal[2] = c2;
+}
+
+
+
+//// mat3x4: 3 columns of vec4
+
+mat3x4 __constructor(const float f00, const float f10, const float f20, const float f30,
+                     const float f01, const float f11, const float f21, const float f31,
+		     const float f02, const float f12, const float f22, const float f32)
+{
+   __retVal[0].x = f00;
+   __retVal[0].y = f10;
+   __retVal[0].z = f20;
+   __retVal[0].w = f30;
+   __retVal[1].x = f01;
+   __retVal[1].y = f11;
+   __retVal[1].z = f21;
+   __retVal[1].w = f31;
+   __retVal[2].x = f02;
+   __retVal[2].y = f12;
+   __retVal[2].z = f22;
+   __retVal[2].w = f32;
+}
+
+mat3x4 __constructor(const float f)
+{
+   __retVal = mat3x4(  f, 0.0, 0.0, 0.0,
+                     0.0,   f, 0.0, 0.0,
+                     0.0, 0.0,   f, 0.0);
+}
+
+mat3x4 __constructor(const int i)
+{
+   const float f = float(i);
+   __retVal = mat3x4(f);
+}
+
+mat3x4 __constructor(const bool b)
+{
+   const float f = float(b);
+   __retVal = mat3x4(f);
+}
+
+mat3x4 __constructor(const vec4 c0, const vec4 c1, const vec4 c2)
+{
+   __retVal[0] = c0;
+   __retVal[1] = c1;
+   __retVal[2] = c2;
+}
+
+
+
+//// mat4x2: 4 columns of vec2
+
+mat4x2 __constructor(const float f00, const float f10,
+                     const float f01, const float f11,
+		     const float f02, const float f12,
+		     const float f03, const float f13)
+{
+   __retVal[0].x = f00;
+   __retVal[0].y = f10;
+   __retVal[1].x = f01;
+   __retVal[1].y = f11;
+   __retVal[2].x = f02;
+   __retVal[2].y = f12;
+   __retVal[3].x = f03;
+   __retVal[3].y = f13;
+}
+
+mat4x2 __constructor(const float f)
+{
+   __retVal = mat4x2(  f, 0.0,
+                     0.0,   4,
+                     0.0, 0.0,
+                     0.0, 0.0);
+}
+
+mat4x2 __constructor(const int i)
+{
+   const float f = float(i);
+   __retVal = mat4x2(f);
+}
+
+mat4x2 __constructor(const bool b)
+{
+   const float f = float(b);
+   __retVal = mat4x2(f);
+}
+
+mat4x2 __constructor(const vec2 c0, const vec2 c1, const vec2 c2, const vec2 c3)
+{
+   __retVal[0] = c0;
+   __retVal[1] = c1;
+   __retVal[2] = c2;
+   __retVal[3] = c3;
+}
+
+
+
+//// mat4x3: 4 columns of vec3
+
+mat4x3 __constructor(const float f00, const float f10, const float f20,
+                     const float f01, const float f11, const float f21,
+		     const float f02, const float f12, const float f22,
+		     const float f03, const float f13, const float f23)
+{
+   __retVal[0].x = f00;
+   __retVal[0].y = f10;
+   __retVal[0].z = f20;
+   __retVal[1].x = f01;
+   __retVal[1].y = f11;
+   __retVal[1].z = f21;
+   __retVal[2].x = f02;
+   __retVal[2].y = f12;
+   __retVal[2].z = f22;
+   __retVal[3].x = f03;
+   __retVal[3].y = f13;
+   __retVal[3].z = f23;
+}
+
+mat4x3 __constructor(const float f)
+{
+   __retVal = mat4x3(  f, 0.0, 0.0,
+                     0.0,   f, 0.0,
+                     0.0, 0.0,   f,
+                     0.0, 0.0, 0.0);
+}
+
+mat4x3 __constructor(const int i)
+{
+   const float f = float(i);
+   __retVal = mat4x3(f);
+}
+
+mat4x3 __constructor(const bool b)
+{
+   const float f = float(b);
+   __retVal = mat4x3(f);
+}
+
+mat4x3 __constructor(const vec3 c0, const vec3 c1, const vec3 c2, const vec3 c3)
+{
+   __retVal[0] = c0;
+   __retVal[1] = c1;
+   __retVal[2] = c2;
+   __retVal[3] = c3;
+}
+
+
+
+//// misc assorted matrix constructors
+
+mat2 __constructor(const mat2 m)
+{
+   __retVal = m;
+}
+
+mat2 __constructor(const mat3x2 m)
+{
+   __retVal = mat2(m[0], m[1]);
+}
+
+mat2 __constructor(const mat4x2 m)
+{
+   __retVal = mat2(m[0], m[1]);
+}
+
+mat2 __constructor(const mat2x3 m)
+{
+   __retVal = mat2(m[0].xy, m[1].xy);
+}
+
+mat2 __constructor(const mat2x4 m)
+{
+   __retVal = mat2(m[0].xy, m[1].xy);
+}
+
+mat2 __constructor(const mat3 m)
+{
+   __retVal = mat2(m[0].xy, m[1].xy);
+}
+
+mat2 __constructor(const mat3x4 m)
+{
+   __retVal = mat2(m[0].xy, m[1].xy);
+}
+
+mat2 __constructor(const mat4x3 m)
+{
+   __retVal = mat2(m[0].xy, m[1].xy);
+}
+
+mat2 __constructor(const mat4 m)
+{
+   __retVal = mat2(m[0].xy, m[1].xy);
+}
+
+
+
+mat2x3 __constructor(const mat2x3 m)
+{
+   __retVal = m;
+}
+
+mat2x3 __constructor(const mat3 m)
+{
+   __retVal = mat2x3(m[0], m[1]);
+}
+
+mat2x3 __constructor(const mat4x3 m)
+{
+   __retVal = mat2x3(m[0], m[1]);
+}
+
+mat2x3 __constructor(const mat2x4 m)
+{
+   __retVal = mat2x3(m[0].xyz, m[1].xyz);
+}
+
+mat2x3 __constructor(const mat3x4 m)
+{
+   __retVal = mat2x3(m[0].xyz, m[1].xyz);
+}
+
+mat2x3 __constructor(const mat4 m)
+{
+   __retVal = mat2x3(m[0].xyz, m[1].xyz);
+}
+
+mat2x3 __constructor(const mat2 m)
+{
+   __retVal = mat2x3(m[0].x, m[0].y, 0.0,
+                     m[1].x, m[1].y, 0.0);
+}
+
+mat2x3 __constructor(const mat3x2 m)
+{
+   __retVal = mat2x3(m[0].x, m[0].y, 0.0,
+                     m[1].x, m[1].y, 0.0);
+}
+
+mat2x3 __constructor(const mat4x2 m)
+{
+   __retVal = mat2x3(m[0].x, m[0].y, 0.0,
+                     m[1].x, m[1].y, 0.0);
+}
+
+
+
+mat2x4 __constructor(const mat2x4 m)
+{
+   __retVal = m;
+}
+
+mat2x4 __constructor(const mat3x4 m)
+{
+   __retVal = mat2x4(m[0], m[1]);
+}
+
+mat2x4 __constructor(const mat4 m)
+{
+   __retVal = mat2x4(m[0], m[1]);
+}
+
+mat2x4 __constructor(const mat2x3 m)
+{
+   __retVal = mat2x4(m[0].x, m[0].y, m[0].z, 0.0,
+                     m[1].x, m[1].y, m[1].z, 0.0);
+}
+
+mat2x4 __constructor(const mat3 m)
+{
+   __retVal = mat2x4(m[0].x, m[0].y, m[0].z, 0.0,
+                     m[1].x, m[1].y, m[1].z, 0.0);
+}
+
+mat2x4 __constructor(const mat4x3 m)
+{
+   __retVal = mat2x4(m[0].x, m[0].y, m[0].z, 0.0,
+                     m[1].x, m[1].y, m[1].z, 0.0);
+}
+
+mat2x4 __constructor(const mat2 m)
+{
+   __retVal = mat2x4(m[0].x, m[1].y, 0.0, 0.0,
+                     m[1].x, m[1].y, 0.0, 0.0);
+}
+
+mat2x4 __constructor(const mat3x2 m)
+{
+   __retVal = mat2x4(m[0].x, m[0].y, 0.0, 0.0,
+                     m[1].x, m[1].y, 0.0, 0.0);
+}
+
+mat2x4 __constructor(const mat4x2 m)
+{
+   __retVal = mat2x4(m[0].x, m[0].y, 0.0, 0.0,
+                     m[1].x, m[1].y, 0.0, 0.0);
+}
+
+
+
+mat3x2 __constructor(const mat3x2 m)
+{
+   __retVal = m;
+}
+
+mat3x2 __constructor(const mat4x2 m)
+{
+   __retVal = mat3x2(m[0], m[1], m[2]);
+}
+
+mat3x2 __constructor(const mat3 m)
+{
+   __retVal = mat3x2(m[0], m[1], m[2]);
+}
+
+mat3x2 __constructor(const mat3x4 m)
+{
+   __retVal = mat3x2(m[0].x, m[0].y,
+                     m[1].x, m[1].y,
+                     m[2].x, m[2].y);
+}
+
+mat3x2 __constructor(const mat4x3 m)
+{
+   __retVal = mat3x2(m[0].x, m[0].y,
+                     m[1].x, m[1].y,
+                     m[2].x, m[2].y);
+}
+
+mat3x2 __constructor(const mat4 m)
+{
+   __retVal = mat3x2(m[0].x, m[0].y,
+                     m[1].x, m[1].y,
+                        0.0,    0.0);
+}
+
+mat3x2 __constructor(const mat2 m)
+{
+   __retVal = mat3x2(m[0], m[1], vec2(0.0));
+}
+
+mat3x2 __constructor(const mat2x3 m)
+{
+   __retVal = mat3x2(m[0].x, m[0].y,
+                     m[1].x, m[1].y,
+                        0.0,    0.0);
+}
+
+mat3x2 __constructor(const mat2x4 m)
+{
+   __retVal = mat3x2(m[0].x, m[0].y,
+                     m[1].x, m[1].y,
+                        0.0,    0.0);
+}
+
+
+
+
+mat3 __constructor(const mat3 m)
+{
+   __retVal = m;
+}
+
+mat3 __constructor(const mat4x3 m)
+{
+   __retVal = mat3 (
+        m[0],
+        m[1],
+        m[2]
+    );
+}
+
+mat3 __constructor(const mat3x4 m)
+{
+   __retVal = mat3 (
+        m[0].xyz,
+        m[1].xyz,
+        m[2].xyz
+    );
+}
+
+mat3 __constructor(const mat4 m)
+{
+   __retVal = mat3 (
+        m[0].xyz,
+        m[1].xyz,
+        m[2].xyz
+    );
+}
+
+mat3 __constructor(const mat2x3 m)
+{
+   __retVal = mat3 (
+        m[0],
+        m[1],
+        0., 0., 1.
+    );
+}
+
+mat3 __constructor(const mat2x4 m)
+{
+   __retVal = mat3 (
+        m[0].xyz,
+        m[1].xyz,
+        0., 0., 1.
+    );
+}
+
+mat3 __constructor(const mat3x2 m)
+{
+   __retVal = mat3 (
+        m[0], 0.,
+        m[1], 0.,
+        m[2], 1.
+    );
+}
+
+mat3 __constructor(const mat4x2 m)
+{
+   __retVal = mat3 (
+        m[0], 0.,
+        m[1], 0.,
+        m[2], 1.
+    );
+}
+
+mat3 __constructor(const mat2 m)
+{
+   __retVal = mat3 (
+        m[0], 0.,
+        m[1], 0.,
+        0., 0., 1.
+    );
+}
+
+
+mat3x4 __constructor(const mat3x4 m)
+{
+   __retVal = m;
+}
+
+mat3x4 __constructor(const mat4 m)
+{
+   __retVal = mat3x4 (
+        m[0],
+        m[1],
+        m[2]
+    );
+}
+
+mat3x4 __constructor(const mat3 m)
+{
+   __retVal = mat3x4 (
+        m[0], 0.,
+        m[1], 0.,
+        m[2], 0.
+    );
+}
+
+mat3x4 __constructor(const mat4x3 m)
+{
+   __retVal = mat3x4 (
+        m[0], 0.,
+        m[1], 0.,
+        m[2], 0.
+    );
+}
+
+mat3x4 __constructor(const mat2x4 m)
+{
+   __retVal = mat3x4 (
+        m[0],
+        m[1],
+        0., 0., 1., 0.
+    );
+}
+
+mat3x4 __constructor(const mat2x3 m)
+{
+   __retVal = mat3x4 (
+        m[0], 0.,
+        m[1], 0.,
+        0., 0., 1., 0.
+    );
+}
+
+mat3x4 __constructor(const mat3x2 m)
+{
+   __retVal = mat3x4 (
+        m[0], 0., 0.,
+        m[1], 0., 0.,
+        m[2], 1., 0.
+    );
+}
+
+mat3x4 __constructor(const mat4x2 m)
+{
+   __retVal = mat3x4 (
+        m[0], 0., 0.,
+        m[1], 0., 0.,
+        m[2], 1., 0.
+    );
+}
+
+mat3x4 __constructor(const mat2 m)
+{
+   __retVal = mat3x4 (
+        m[0], 0., 0.,
+        m[1], 0., 0.,
+        0., 0., 1., 0.
+    );
+}
+
+
+mat4x2 __constructor(const mat4x2 m)
+{
+   __retVal = m;
+}
+
+mat4x2 __constructor(const mat4x3 m)
+{
+   __retVal = mat4x2 (
+        m[0].xy,
+        m[1].xy,
+        m[2].xy,
+        m[3].xy
+    );
+}
+
+mat4x2 __constructor(const mat4 m)
+{
+   __retVal = mat4x2 (
+        m[0].xy,
+        m[1].xy,
+        m[2].xy,
+        m[3].xy
+    );
+}
+
+mat4x2 __constructor(const mat3x2 m)
+{
+   __retVal = mat4x2 (
+        m[0],
+        m[1],
+        0., 0.
+    );
+}
+
+mat4x2 __constructor(const mat3 m)
+{
+   __retVal = mat4x2 (
+        m[0].xy,
+        m[1].xy,
+        m[2].xy,
+        0., 0.
+    );
+}
+
+mat4x2 __constructor(const mat3x4 m)
+{
+   __retVal = mat4x2 (
+        m[0].xy,
+        m[1].xy,
+        m[2].xy,
+        0., 0.
+    );
+}
+
+mat4x2 __constructor(const mat2 m)
+{
+   __retVal = mat4x2 (
+        m[0],
+        m[1],
+        0., 0.,
+        0., 0.
+    );
+}
+
+mat4x2 __constructor(const mat2x3 m)
+{
+   __retVal = mat4x2 (
+        m[0].xy,
+        m[1].xy,
+        0., 0.,
+        0., 0.
+    );
+}
+
+mat4x2 __constructor(const mat2x4 m)
+{
+   __retVal = mat4x2 (
+        m[0].xy,
+        m[1].xy,
+        0., 0.,
+        0., 0.
+    );
+}
+
+
+mat4x3 __constructor(const mat4x3 m)
+{
+   __retVal = m;
+}
+
+mat4x3 __constructor(const mat4 m)
+{
+   __retVal = mat4x3 (
+        m[0].xyz,
+        m[1].xyz,
+        m[2].xyz,
+        m[3].xyz
+    );
+}
+
+mat4x3 __constructor(const mat3 m)
+{
+   __retVal = mat4x3 (
+        m[0],
+        m[1],
+        m[2],
+        0., 0., 0.
+    );
+}
+
+mat4x3 __constructor(const mat3x4 m)
+{
+   __retVal = mat4x3 (
+        m[0].xyz,
+        m[1].xyz,
+        m[2].xyz,
+        0., 0., 0.
+    );
+}
+
+mat4x3 __constructor(const mat4x2 m)
+{
+   __retVal = mat4x3 (
+        m[0], 0.,
+        m[1], 0.,
+        m[2], 1.,
+        m[3], 0.
+    );
+}
+
+mat4x3 __constructor(const mat2x3 m)
+{
+   __retVal = mat4x3 (
+        m[0],
+        m[1],
+        0., 0., 1.,
+        0., 0., 0.
+    );
+}
+
+mat4x3 __constructor(const mat3x2 m)
+{
+   __retVal = mat4x3 (
+        m[0], 0.,
+        m[1], 0.,
+        m[2], 1.,
+        0., 0., 0.
+    );
+}
+
+mat4x3 __constructor(const mat2x4 m)
+{
+   __retVal = mat4x3 (
+        m[0].xyz,
+        m[1].xyz,
+        0., 0., 1.,
+        0., 0., 0.
+    );
+}
+
+mat4x3 __constructor(const mat2 m)
+{
+   __retVal = mat4x3 (
+        m[0], 0.,
+        m[1], 0.,
+        0., 0., 1.,
+        0., 0., 0.
+    );
+}
+
+
+mat4 __constructor(const mat4 m)
+{
+   __retVal = m;
+}
+
+mat4 __constructor(const mat3x4 m)
+{
+   __retVal = mat4 (
+        m[0],
+        m[1],
+        m[2],
+        0., 0., 0., 1.
+    );
+}
+
+mat4 __constructor(const mat4x3 m)
+{
+   __retVal = mat4 (
+        m[0], 0.,
+        m[1], 0.,
+        m[2], 0.,
+        m[3], 1.
+    );
+}
+
+mat4 __constructor(const mat2x4 m)
+{
+   __retVal = mat4 (
+        m[0],
+        m[1],
+        0., 0., 1., 0.,
+        0., 0., 0., 1.
+    );
+}
+
+mat4 __constructor(const mat4x2 m)
+{
+   __retVal = mat4 (
+        m[0], 0., 0.,
+        m[1], 0., 0.,
+        m[2], 1., 0.,
+        m[3], 0., 1.
+    );
+}
+
+mat4 __constructor(const mat3 m)
+{
+   __retVal = mat4 (
+        m[0], 0.,
+        m[1], 0.,
+        m[2], 0.,
+        0., 0., 0., 1.
+    );
+}
+
+mat4 __constructor(const mat2x3 m)
+{
+   __retVal = mat4 (
+        m[0], 0.,
+        m[1], 0.,
+        0., 0., 1., 0.,
+        0., 0., 0., 1.
+    );
+}
+
+mat4 __constructor(const mat3x2 m)
+{
+   __retVal = mat4 (
+        m[0], 0., 0.,
+        m[1], 0., 0.,
+        m[2], 1., 0.,
+        0., 0., 0., 1.
+    );
+}
+
+mat4 __constructor(const mat2 m)
+{
+   __retVal = mat4 (
+        m[0], 0., 0.,
+        m[1], 0., 0.,
+        0., 0., 1., 0.,
+        0., 0., 0., 1.
+    );
+}
+
+
+void __operator += (inout mat2x3 m, const mat2x3 n) {
+    m[0] += n[0];
+    m[1] += n[1];
+}
+
+void __operator += (inout mat2x4 m, const mat2x4 n) {
+    m[0] += n[0];
+    m[1] += n[1];
+}
+
+void __operator += (inout mat3x2 m, const mat3x2 n) {
+    m[0] += n[0];
+    m[1] += n[1];
+    m[2] += n[2];
+}
+
+void __operator += (inout mat3x4 m, const mat3x4 n) {
+    m[0] += n[0];
+    m[1] += n[1];
+    m[2] += n[2];
+}
+
+void __operator += (inout mat4x2 m, const mat4x2 n) {
+    m[0] += n[0];
+    m[1] += n[1];
+    m[2] += n[2];
+    m[3] += n[3];
+}
+
+void __operator += (inout mat4x3 m, const mat4x3 n) {
+    m[0] += n[0];
+    m[1] += n[1];
+    m[2] += n[2];
+    m[3] += n[3];
+}
+
+
+void __operator -= (inout mat2x3 m, const mat2x3 n) {
+    m[0] -= n[0];
+    m[1] -= n[1];
+}
+
+void __operator -= (inout mat2x4 m, const mat2x4 n) {
+    m[0] -= n[0];
+    m[1] -= n[1];
+}
+
+void __operator -= (inout mat3x2 m, const mat3x2 n) {
+    m[0] -= n[0];
+    m[1] -= n[1];
+    m[2] -= n[2];
+}
+
+void __operator -= (inout mat3x4 m, const mat3x4 n) {
+    m[0] -= n[0];
+    m[1] -= n[1];
+    m[2] -= n[2];
+}
+
+void __operator -= (inout mat4x2 m, const mat4x2 n) {
+    m[0] -= n[0];
+    m[1] -= n[1];
+    m[2] -= n[2];
+    m[3] -= n[3];
+}
+
+void __operator -= (inout mat4x3 m, const mat4x3 n) {
+    m[0] -= n[0];
+    m[1] -= n[1];
+    m[2] -= n[2];
+    m[3] -= n[3];
+}
+
+
+void __operator /= (inout mat2x3 m, const mat2x3 n) {
+    m[0] /= n[0];
+    m[1] /= n[1];
+}
+
+void __operator /= (inout mat2x4 m, const mat2x4 n) {
+    m[0] /= n[0];
+    m[1] /= n[1];
+}
+
+void __operator /= (inout mat3x2 m, const mat3x2 n) {
+    m[0] /= n[0];
+    m[1] /= n[1];
+    m[2] /= n[2];
+}
+
+void __operator /= (inout mat3x4 m, const mat3x4 n) {
+    m[0] /= n[0];
+    m[1] /= n[1];
+    m[2] /= n[2];
+}
+
+void __operator /= (inout mat4x2 m, const mat4x2 n) {
+    m[0] /= n[0];
+    m[1] /= n[1];
+    m[2] /= n[2];
+    m[3] /= n[3];
+}
+
+void __operator /= (inout mat4x3 m, const mat4x3 n) {
+    m[0] /= n[0];
+    m[1] /= n[1];
+    m[2] /= n[2];
+    m[3] /= n[3];
+}
+
+
+vec3 __operator * (const mat2x3 m, const vec2 v)
+{
+   __retVal.x = v.x * m[0].x + v.y * m[1].x;
+   __retVal.y = v.x * m[0].y + v.y * m[1].y;
+   __retVal.z = v.x * m[0].z + v.y * m[1].z;
+}
+
+vec4 __operator * (const mat2x4 m, const vec2 v)
+{
+   __retVal.x = v.x * m[0].x + v.y * m[1].x;
+   __retVal.y = v.x * m[0].y + v.y * m[1].y;
+   __retVal.z = v.x * m[0].z + v.y * m[1].z;
+   __retVal.w = v.x * m[0].w + v.y * m[1].w;
+}
+
+vec2 __operator * (const mat3x2 m, const vec3 v)
+{
+   __retVal.x = v.x * m[0].x + v.y * m[1].x + v.z * m[2].x;
+   __retVal.y = v.x * m[0].y + v.y * m[1].y + v.z * m[2].y;
+}
+
+vec4 __operator * (const mat3x4 m, const vec3 v)
+{
+   __retVal.x = v.x * m[0].x + v.y * m[1].x + v.z * m[2].x;
+   __retVal.y = v.x * m[0].y + v.y * m[1].y + v.z * m[2].y;
+   __retVal.z = v.x * m[0].z + v.y * m[1].z + v.z * m[2].z;
+   __retVal.w = v.x * m[0].w + v.y * m[1].w + v.z * m[2].w;
+}
+
+vec2 __operator * (const mat4x2 m, const vec4 v)
+{
+   __retVal.x = v.x * m[0].x + v.y * m[1].x + v.z * m[2].x + v.w * m[3].x;
+   __retVal.y = v.x * m[0].y + v.y * m[1].y + v.z * m[2].y + v.w * m[3].y;
+}
+
+vec3 __operator * (const mat4x3 m, const vec4 v)
+{
+   __retVal.x = v.x * m[0].x + v.y * m[1].x + v.z * m[2].x + v.w * m[3].x;
+   __retVal.y = v.x * m[0].y + v.y * m[1].y + v.z * m[2].y + v.w * m[3].y;
+   __retVal.z = v.x * m[0].z + v.y * m[1].z + v.z * m[2].z + v.w * m[3].z;
+}
+
+
+mat3x2 __operator * (const mat2 m, const mat3x2 n)
+{
+   //return mat3x2 (m * n[0], m * n[1], m * n[2]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+}
+
+mat4x2 __operator * (const mat2 m, const mat4x2 n)
+{
+   //return mat4x2 (m * n[0], m * n[1], m * n[2], m * n[3]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+   __retVal[3] = m * n[3];
+}
+
+
+mat2x3 __operator * (const mat2x3 m, const mat2 n)
+{
+   //return mat2x3 (m * n[0], m * n[1]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+}
+
+mat3 __operator * (const mat2x3 m, const mat3x2 n)
+{
+   //return mat3 (m * n[0], m * n[1], m * n[2]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+}
+
+mat4x3 __operator * (const mat2x3 m, const mat4x2 n)
+{
+   //return mat4x3 (m * n[0], m * n[1], m * n[2], m * n[3]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+   __retVal[3] = m * n[3];
+}
+
+
+mat2x4 __operator * (const mat2x4 m, const mat2 n)
+{
+   //return mat2x4 (m * n[0], m * n[1]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+}
+
+mat3x4 __operator * (const mat2x4 m, const mat3x2 n)
+{
+   //return mat3x4 (m * n[0], m * n[1], m * n[2]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+}
+
+mat4 __operator * (const mat2x4 m, const mat4x2 n)
+{
+   //return mat4 (m * n[0], m * n[1], m * n[2], m * n[3]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+   __retVal[3] = m * n[3];
+}
+
+
+mat2 __operator * (const mat3x2 m, const mat2x3 n)
+{
+   //return mat2 (m * n[0], m * n[1]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+}
+
+mat3x2 __operator * (const mat3x2 m, const mat3 n)
+{
+   //return mat3x2 (m * n[0], m * n[1], m * n[2]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+}
+
+mat4x2 __operator * (const mat3x2 m, const mat4x3 n)
+{
+   //return mat4x2 (m * n[0], m * n[1], m * n[2], m * n[3]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+   __retVal[3] = m * n[3];
+}
+
+
+mat2x3 __operator * (const mat3 m, const mat2x3 n)
+{
+   //return mat2x3 (m * n[0], m * n[1]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+}
+
+mat4x3 __operator * (const mat3 m, const mat4x3 n)
+{
+   //return mat4x3 (m * n[0], m * n[1], m * n[2], m * n[3]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+   __retVal[3] = m * n[3];
+}
+
+
+mat2x4 __operator * (const mat3x4 m, const mat2x3 n)
+{
+   //return mat2x4 (m * n[0], m * n[1]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+}
+
+mat3x4 __operator * (const mat3x4 m, const mat3 n)
+{
+   //return mat3x4 (m * n[0], m * n[1], m * n[2]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+}
+
+mat4 __operator * (const mat3x4 m, const mat4x3 n)
+{
+   //return mat4 (m * n[0], m * n[1], m * n[2], m * n[3]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+   __retVal[3] = m * n[3];
+}
+
+
+mat2 __operator * (const mat4x2 m, const mat2x4 n)
+{
+   //return = mat2 (m * n[0], m * n[1]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+}
+
+mat3x2 __operator * (const mat4x2 m, const mat3x4 n)
+{
+   //return mat3x2 (m * n[0], m * n[1], m * n[2]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+}
+
+mat4x2 __operator * (const mat4x2 m, const mat4 n)
+{
+   //return mat4x2 (m * n[0], m * n[1], m * n[2], m * n[3]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+   __retVal[3] = m * n[3];
+}
+
+
+mat2x3 __operator * (const mat4x3 m, const mat2x4 n)
+{
+   //return mat2x3 (m * n[0], m * n[1]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+}
+
+mat3 __operator * (const mat4x3 m, const mat3x4 n)
+{
+   //return mat3 (m * n[0], m * n[1], m * n[2]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+}
+
+mat4x3 __operator * (const mat4x3 m, const mat4 n)
+{
+   //return mat4x3 (m * n[0], m * n[1], m * n[2], m * n[3]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+   __retVal[3] = m * n[3];
+}
+
+
+mat2x4 __operator * (const mat4 m, const mat2x4 n)
+{
+   //return mat2x4 (m * n[0], m * n[1]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+}
+
+mat3x4 __operator * (const mat4 m, const mat3x4 n)
+{
+   //return mat3x4 (m * n[0], m * n[1], m * n[2]);
+   __retVal[0] = m * n[0];
+   __retVal[1] = m * n[1];
+   __retVal[2] = m * n[2];
+}
+
+
+void __operator *= (inout mat2x3 m, const mat2 n) {
+    m = m * n;
+}
+
+void __operator *= (inout mat2x4 m, const mat2 n) {
+    m = m * n;
+}
+
+void __operator *= (inout mat3x2 m, const mat3 n) {
+    m = m * n;
+}
+
+void __operator *= (inout mat3x4 m, const mat3 n) {
+    m = m * n;
+}
+
+void __operator *= (inout mat4x2 m, const mat4 n) {
+    m = m * n;
+}
+
+void __operator *= (inout mat4x3 m, const mat4 n) {
+    m = m * n;
+}
+
+
+vec3 __operator * (const vec2 v, const mat3x2 m)
+{
+   __retVal.x = dot(v, m[0]);
+   __retVal.y = dot(v, m[1]);
+   __retVal.z = dot(v, m[2]);
+}
+
+vec4 __operator * (const vec2 v, const mat4x2 m)
+{
+   __retVal.x = dot(v, m[0]);
+   __retVal.y = dot(v, m[1]);
+   __retVal.z = dot(v, m[2]);
+   __retVal.w = dot(v, m[3]);
+}
+
+vec2 __operator * (const vec3 v, const mat2x3 m)
+{
+   __retVal.x = dot(v, m[0]);
+   __retVal.y = dot(v, m[1]);
+}
+
+vec4 __operator * (const vec3 v, const mat4x3 m)
+{
+   __retVal.x = dot(v, m[0]);
+   __retVal.y = dot(v, m[1]);
+   __retVal.z = dot(v, m[2]);
+   __retVal.w = dot(v, m[3]);
+}
+
+vec2 __operator * (const vec4 v, const mat2x4 m)
+{
+   __retVal.x = dot(v, m[0]);
+   __retVal.y = dot(v, m[1]);
+}
+
+vec3 __operator * (const vec4 v, const mat3x4 m)
+{
+   __retVal.x = dot(v, m[0]);
+   __retVal.y = dot(v, m[1]);
+   __retVal.z = dot(v, m[2]);
+}
+
+
+void __operator += (inout mat2x3 m, const float a) {
+    m[0] += a;
+    m[1] += a;
+}
+
+void __operator += (inout mat2x4 m, const float a) {
+    m[0] += a;
+    m[1] += a;
+}
+
+void __operator += (inout mat3x2 m, const float a) {
+    m[0] += a;
+    m[1] += a;
+    m[2] += a;
+}
+
+void __operator += (inout mat3x4 m, const float a) {
+    m[0] += a;
+    m[1] += a;
+    m[2] += a;
+}
+
+void __operator += (inout mat4x2 m, const float a) {
+    m[0] += a;
+    m[1] += a;
+    m[2] += a;
+    m[3] += a;
+}
+
+void __operator += (inout mat4x3 m, const float a) {
+    m[0] += a;
+    m[1] += a;
+    m[2] += a;
+    m[3] += a;
+}
+
+
+void __operator -= (inout mat2x3 m, const float a) {
+    m[0] -= a;
+    m[1] -= a;
+}
+
+void __operator -= (inout mat2x4 m, const float a) {
+    m[0] -= a;
+    m[1] -= a;
+}
+
+void __operator -= (inout mat3x2 m, const float a) {
+    m[0] -= a;
+    m[1] -= a;
+    m[2] -= a;
+}
+
+void __operator -= (inout mat3x4 m, const float a) {
+    m[0] -= a;
+    m[1] -= a;
+    m[2] -= a;
+}
+
+void __operator -= (inout mat4x2 m, const float a) {
+    m[0] -= a;
+    m[1] -= a;
+    m[2] -= a;
+    m[3] -= a;
+}
+
+void __operator -= (inout mat4x3 m, const float a) {
+    m[0] -= a;
+    m[1] -= a;
+    m[2] -= a;
+    m[3] -= a;
+}
+
+
+void __operator *= (inout mat2x3 m, const float a) {
+    m[0] *= a;
+    m[1] *= a;
+}
+
+void __operator *= (inout mat2x4 m, const float a) {
+    m[0] *= a;
+    m[1] *= a;
+}
+
+void __operator *= (inout mat3x2 m, const float a) {
+    m[0] *= a;
+    m[1] *= a;
+    m[2] *= a;
+}
+
+void __operator *= (inout mat3x4 m, const float a) {
+    m[0] *= a;
+    m[1] *= a;
+    m[2] *= a;
+}
+
+void __operator *= (inout mat4x2 m, const float a) {
+    m[0] *= a;
+    m[1] *= a;
+    m[2] *= a;
+    m[3] *= a;
+}
+
+void __operator *= (inout mat4x3 m, const float a) {
+    m[0] *= a;
+    m[1] *= a;
+    m[2] *= a;
+    m[3] *= a;
+}
+
+
+void __operator /= (inout mat2x3 m, const float a) {
+    m[0] /= a;
+    m[1] /= a;
+}
+
+void __operator /= (inout mat2x4 m, const float a) {
+    m[0] /= a;
+    m[1] /= a;
+}
+
+void __operator /= (inout mat3x2 m, const float a) {
+    m[0] /= a;
+    m[1] /= a;
+    m[2] /= a;
+}
+
+void __operator /= (inout mat3x4 m, const float a) {
+    m[0] /= a;
+    m[1] /= a;
+    m[2] /= a;
+}
+
+void __operator /= (inout mat4x2 m, const float a) {
+    m[0] /= a;
+    m[1] /= a;
+    m[2] /= a;
+    m[3] /= a;
+}
+
+void __operator /= (inout mat4x3 m, const float a) {
+    m[0] /= a;
+    m[1] /= a;
+    m[2] /= a;
+    m[3] /= a;
+}
+
+
+mat2x3 __operator + (const mat2x3 m, const mat2x3 n) {
+    return mat2x3 (m[0] + n[0], m[1] + n[1]);
+}
+
+mat2x4 __operator + (const mat2x4 m, const mat2x4 n) {
+    return mat2x4 (m[0] + n[0], m[1] + n[1]);
+}
+
+mat3x2 __operator + (const mat3x2 m, const mat3x2 n) {
+    return mat3x2 (m[0] + n[0], m[1] + n[1], m[2] + n[2]);
+}
+
+mat3x4 __operator + (const mat3x4 m, const mat3x4 n) {
+    return mat3x4 (m[0] + n[0], m[1] + n[1], m[2] + n[2]);
+}
+
+mat4x2 __operator + (const mat4x2 m, const mat4x2 n) {
+    return mat4x2 (m[0] + n[0], m[1] + n[1], m[2] + n[2], m[3] + n[3]);
+}
+
+mat4x3 __operator + (const mat4x3 m, const mat4x3 n) {
+    return mat4x3 (m[0] + n[0], m[1] + n[1], m[2] + n[2], m[3] + n[3]);
+}
+
+
+mat2x3 __operator - (const mat2x3 m, const mat2x3 n) {
+    return mat2x3 (m[0] - n[0], m[1] - n[1]);
+}
+
+mat2x4 __operator - (const mat2x4 m, const mat2x4 n) {
+    return mat2x4 (m[0] - n[0], m[1] - n[1]);
+}
+
+mat3x2 __operator - (const mat3x2 m, const mat3x2 n) {
+    return mat3x2 (m[0] - n[0], m[1] - n[1], m[2] - n[2]);
+}
+
+mat3x4 __operator - (const mat3x4 m, const mat3x4 n) {
+    return mat3x4 (m[0] - n[0], m[1] - n[1], m[2] - n[2]);
+}
+
+mat4x2 __operator - (const mat4x2 m, const mat4x2 n) {
+    return mat4x2 (m[0] - n[0], m[1] - n[1], m[2] - n[2], m[3] - n[3]);
+}
+
+mat4x3 __operator - (const mat4x3 m, const mat4x3 n) {
+    return mat4x3 (m[0] - n[0], m[1] - n[1], m[2] - n[2], m[3] - n[3]);
+}
+
+
+mat2x3 __operator / (const mat2x3 m, const mat2x3 n) {
+    return mat2x3 (m[0] / n[0], m[1] / n[1]);
+}
+
+mat2x4 __operator / (const mat2x4 m, const mat2x4 n) {
+    return mat2x4 (m[0] / n[0], m[1] / n[1]);
+}
+
+mat3x2 __operator / (const mat3x2 m, const mat3x2 n) {
+    return mat3x2 (m[0] / n[0], m[1] / n[1], m[2] / n[2]);
+}
+
+mat3x4 __operator / (const mat3x4 m, const mat3x4 n) {
+    return mat3x4 (m[0] / n[0], m[1] / n[1], m[2] / n[2]);
+}
+
+mat4x2 __operator / (const mat4x2 m, const mat4x2 n) {
+    return mat4x2 (m[0] / n[0], m[1] / n[1], m[2] / n[2], m[3] / n[3]);
+}
+
+mat4x3 __operator / (const mat4x3 m, const mat4x3 n) {
+    return mat4x3 (m[0] / n[0], m[1] / n[1], m[2] / n[2], m[3] / n[3]);
+}
+
+
+mat2x3 __operator + (const float a, const mat2x3 n) {
+    return mat2x3 (a + n[0], a + n[1]);
+}
+
+mat2x3 __operator + (const mat2x3 m, const float b) {
+    return mat2x3 (m[0] + b, m[1] + b);
+}
+
+mat2x4 __operator + (const float a, const mat2x4 n) {
+    return mat2x4 (a + n[0], a + n[1]);
+}
+
+mat2x4 __operator + (const mat2x4 m, const float b) {
+    return mat2x4 (m[0] + b, m[1] + b);
+}
+
+mat3x2 __operator + (const float a, const mat3x2 n) {
+    return mat3x2 (a + n[0], a + n[1], a + n[2]);
+}
+
+mat3x2 __operator + (const mat3x2 m, const float b) {
+    return mat3x2 (m[0] + b, m[1] + b, m[2] + b);
+}
+
+mat3x4 __operator + (const float a, const mat3x4 n) {
+    return mat3x4 (a + n[0], a + n[1], a + n[2]);
+}
+
+mat3x4 __operator + (const mat3x4 m, const float b) {
+    return mat3x4 (m[0] + b, m[1] + b, m[2] + b);
+}
+
+mat4x2 __operator + (const mat4x2 m, const float b) {
+    return mat4x2 (m[0] + b, m[1] + b, m[2] + b, m[3] + b);
+}
+
+mat4x2 __operator + (const float a, const mat4x2 n) {
+    return mat4x2 (a + n[0], a + n[1], a + n[2], a + n[3]);
+}
+
+mat4x3 __operator + (const mat4x3 m, const float b) {
+    return mat4x3 (m[0] + b, m[1] + b, m[2] + b, m[3] + b);
+}
+
+mat4x3 __operator + (const float a, const mat4x3 n) {
+    return mat4x3 (a + n[0], a + n[1], a + n[2], a + n[3]);
+}
+
+
+mat2x3 __operator - (const float a, const mat2x3 n) {
+    return mat2x3 (a - n[0], a - n[1]);
+}
+
+mat2x3 __operator - (const mat2x3 m, const float b) {
+    return mat2x3 (m[0] - b, m[1] - b);
+}
+
+mat2x4 __operator - (const float a, const mat2x4 n) {
+    return mat2x4 (a - n[0], a - n[1]);
+}
+
+mat2x4 __operator - (const mat2x4 m, const float b) {
+    return mat2x4 (m[0] - b, m[1] - b);
+}
+
+mat3x2 __operator - (const float a, const mat3x2 n) {
+    return mat3x2 (a - n[0], a - n[1], a - n[2]);
+}
+
+mat3x2 __operator - (const mat3x2 m, const float b) {
+    return mat3x2 (m[0] - b, m[1] - b, m[2] - b);
+}
+
+mat3x4 __operator - (const float a, const mat3x4 n) {
+    return mat3x4 (a - n[0], a - n[1], a - n[2]);
+}
+
+mat3x4 __operator - (const mat3x4 m, const float b) {
+    return mat3x4 (m[0] - b, m[1] - b, m[2] - b);
+}
+
+mat4x2 __operator - (const mat4x2 m, const float b) {
+    return mat4x2 (m[0] - b, m[1] - b, m[2] - b, m[3] - b);
+}
+
+mat4x2 __operator - (const float a, const mat4x2 n) {
+    return mat4x2 (a - n[0], a - n[1], a - n[2], a - n[3]);
+}
+
+mat4x3 __operator - (const mat4x3 m, const float b) {
+    return mat4x3 (m[0] - b, m[1] - b, m[2] - b, m[3] - b);
+}
+
+mat4x3 __operator - (const float a, const mat4x3 n) {
+    return mat4x3 (a - n[0], a - n[1], a - n[2], a - n[3]);
+}
+
+
+mat2x3 __operator * (const float a, const mat2x3 n)
+{
+   //return mat2x3 (a * n[0], a * n[1]);
+   __retVal[0] = a * n[0];
+   __retVal[1] = a * n[1];
+}
+
+mat2x3 __operator * (const mat2x3 m, const float b)
+{
+   //return mat2x3 (m[0] * b, m[1] * b);
+   __retVal[0] = m[0] * b;
+   __retVal[1] = m[1] * b;
+}
+
+mat2x4 __operator * (const float a, const mat2x4 n)
+{
+   //return mat2x4 (a * n[0], a * n[1]);
+   __retVal[0] = a * n[0];
+   __retVal[1] = a * n[1];
+}
+
+mat2x4 __operator * (const mat2x4 m, const float b)
+{
+   //return mat2x4 (m[0] * b, m[1] * b);
+   __retVal[0] = m[0] * b;
+   __retVal[1] = m[1] * b;
+}
+
+mat3x2 __operator * (const float a, const mat3x2 n)
+{
+   //return mat3x2 (a * n[0], a * n[1], a * n[2]);
+   __retVal[0] = a * n[0];
+   __retVal[1] = a * n[1];
+   __retVal[2] = a * n[2];
+}
+
+mat3x2 __operator * (const mat3x2 m, const float b)
+{
+   //return mat3x2 (m[0] * b, m[1] * b, m[2] * b);
+   __retVal[0] = m[0] * b;
+   __retVal[1] = m[1] * b;
+   __retVal[2] = m[2] * b;
+}
+
+mat3x4 __operator * (const float a, const mat3x4 n)
+{
+   //return mat3x4 (a * n[0], a * n[1], a * n[2]);
+   __retVal[0] = a * n[0];
+   __retVal[1] = a * n[1];
+   __retVal[2] = a * n[2];
+}
+
+mat3x4 __operator * (const mat3x4 m, const float b)
+{
+   //return mat3x4 (m[0] * b, m[1] * b, m[2] * b);
+   __retVal[0] = m[0] * b;
+   __retVal[1] = m[1] * b;
+   __retVal[2] = m[2] * b;
+}
+
+mat4x2 __operator * (const mat4x2 m, const float b)
+{
+   //return mat4x2 (m[0] * b, m[1] * b, m[2] * b, m[3] * b);
+   __retVal[0] = m[0] * b;
+   __retVal[1] = m[1] * b;
+   __retVal[2] = m[2] * b;
+   __retVal[3] = m[3] * b;
+}
+
+mat4x2 __operator * (const float a, const mat4x2 n)
+{
+   //return mat4x2 (a * n[0], a * n[1], a * n[2], a * n[3]);
+   __retVal[0] = a * n[0];
+   __retVal[1] = a * n[1];
+   __retVal[2] = a * n[2];
+   __retVal[3] = a * n[3];
+}
+
+mat4x3 __operator * (const mat4x3 m, const float b)
+{
+   //return mat4x3 (m[0] * b, m[1] * b, m[2] * b, m[3] * b);
+   __retVal[0] = m[0] * b;
+   __retVal[1] = m[1] * b;
+   __retVal[2] = m[2] * b;
+   __retVal[3] = m[3] * b;
+}
+
+mat4x3 __operator * (const float a, const mat4x3 n)
+{
+   //return mat4x3 (a * n[0], a * n[1], a * n[2], a * n[3]);
+   __retVal[0] = a * n[0];
+   __retVal[1] = a * n[1];
+   __retVal[2] = a * n[2];
+   __retVal[3] = a * n[3];
+}
+
+
+mat2x3 __operator / (const float a, const mat2x3 n)
+{
+   //return mat2x3 (a / n[0], a / n[1]);
+   const float inv = 1.0 / a;
+   __retVal[0] = inv * n[0];
+   __retVal[1] = inv * n[1];
+}
+
+mat2x3 __operator / (const mat2x3 m, const float b)
+{
+   //return mat2x3 (m[0] / b, m[1] / b);
+   const float inv = 1.0 / b;
+   __retVal[0] = m[0] * inv;
+   __retVal[1] = m[1] * inv;
+}
+
+mat2x4 __operator / (const float a, const mat2x4 n)
+{
+   //return mat2x4 (a / n[0], a / n[1]);
+   const float inv = 1.0 / a;
+   __retVal[0] = inv * n[0];
+   __retVal[1] = inv * n[1];
+}
+
+mat2x4 __operator / (const mat2x4 m, const float b)
+{
+   //return mat2x4 (m[0] / b, m[1] / b);
+   const float inv = 1.0 / b;
+   __retVal[0] = m[0] * inv;
+   __retVal[1] = m[1] * inv;
+}
+
+mat3x2 __operator / (const float a, const mat3x2 n)
+{
+   //return mat3x2 (a / n[0], a / n[1], a / n[2]);
+   const float inv = 1.0 / a;
+   __retVal[0] = inv * n[0];
+   __retVal[1] = inv * n[1];
+   __retVal[2] = inv * n[2];
+}
+
+mat3x2 __operator / (const mat3x2 m, const float b)
+{
+   //return mat3x2 (m[0] / b, m[1] / b, m[2] / b);
+   const float inv = 1.0 / b;
+   __retVal[0] = m[0] * inv;
+   __retVal[1] = m[1] * inv;
+   __retVal[2] = m[2] * inv;
+}
+
+mat3x4 __operator / (const float a, const mat3x4 n)
+{
+   //return mat3x4 (a / n[0], a / n[1], a / n[2]);
+   const float inv = 1.0 / a;
+   __retVal[0] = inv * n[0];
+   __retVal[1] = inv * n[1];
+   __retVal[2] = inv * n[2];
+}
+
+mat3x4 __operator / (const mat3x4 m, const float b)
+{
+   //return mat3x4 (m[0] / b, m[1] / b, m[2] / b);
+   const float inv = 1.0 / b;
+   __retVal[0] = m[0] * inv;
+   __retVal[1] = m[1] * inv;
+   __retVal[2] = m[2] * inv;
+}
+
+mat4x2 __operator / (const mat4x2 m, const float b)
+{
+   //return mat4x2 (m[0] / b, m[1] / b, m[2] / b, m[3] / b);
+   const float inv = 1.0 / b;
+   __retVal[0] = m[0] * inv;
+   __retVal[1] = m[1] * inv;
+   __retVal[2] = m[2] * inv;
+   __retVal[3] = m[3] * inv;
+}
+
+mat4x2 __operator / (const float a, const mat4x2 n)
+{
+   //return mat4x2 (a / n[0], a / n[1], a / n[2], a / n[3]);
+   const float inv = 1.0 / a;
+   __retVal[0] = inv * n[0];
+   __retVal[1] = inv * n[1];
+   __retVal[2] = inv * n[2];
+   __retVal[3] = inv * n[3];
+}
+
+mat4x3 __operator / (const mat4x3 m, const float b)
+{
+   //return mat4x3 (m[0] / b, m[1] / b, m[2] / b, m[3] / b);
+   const float inv = 1.0 / b;
+   __retVal[0] = m[0] * inv;
+   __retVal[1] = m[1] * inv;
+   __retVal[2] = m[2] * inv;
+   __retVal[3] = m[3] * inv;
+}
+
+mat4x3 __operator / (const float a, const mat4x3 n)
+{
+   //return mat4x3 (a / n[0], a / n[1], a / n[2], a / n[3]);
+   const float inv = 1.0 / a;
+   __retVal[0] = inv * n[0];
+   __retVal[1] = inv * n[1];
+   __retVal[2] = inv * n[2];
+   __retVal[3] = inv * n[3];
+}
+
+
+mat2x3 __operator - (const mat2x3 m) {
+    return mat2x3 (-m[0], -m[1]);
+}
+
+mat2x4 __operator - (const mat2x4 m) {
+    return mat2x4 (-m[0], -m[1]);
+}
+
+mat3x2 __operator - (const mat3x2 m) {
+    return mat3x2 (-m[0], -m[1], -m[2]);
+}
+
+mat3x4 __operator - (const mat3x4 m) {
+    return mat3x4 (-m[0], -m[1], -m[2]);
+}
+
+mat4x2 __operator - (const mat4x2 m) {
+    return mat4x2 (-m[0], -m[1], -m[2], -m[3]);
+}
+
+mat4x3 __operator - (const mat4x3 m) {
+    return mat4x3 (-m[0], -m[1], -m[2], -m[3]);
+}
+
+
+void __operator -- (inout mat2x3 m) {
+    --m[0];
+    --m[1];
+}
+
+void __operator -- (inout mat2x4 m) {
+    --m[0];
+    --m[1];
+}
+
+void __operator -- (inout mat3x2 m) {
+    --m[0];
+    --m[1];
+    --m[2];
+}
+
+void __operator -- (inout mat3x4 m) {
+    --m[0];
+    --m[1];
+    --m[2];
+}
+
+void __operator -- (inout mat4x2 m) {
+    --m[0];
+    --m[1];
+    --m[2];
+    --m[3];
+}
+
+void __operator -- (inout mat4x3 m) {
+    --m[0];
+    --m[1];
+    --m[2];
+    --m[3];
+}
+
+
+void __operator ++ (inout mat2x3 m) {
+    ++m[0];
+    ++m[1];
+}
+
+void __operator ++ (inout mat2x4 m) {
+    ++m[0];
+    ++m[1];
+}
+
+void __operator ++ (inout mat3x2 m) {
+    ++m[0];
+    ++m[1];
+    ++m[2];
+}
+
+void __operator ++ (inout mat3x4 m) {
+    ++m[0];
+    ++m[1];
+    ++m[2];
+}
+
+void __operator ++ (inout mat4x2 m) {
+    ++m[0];
+    ++m[1];
+    ++m[2];
+    ++m[3];
+}
+
+void __operator ++ (inout mat4x3 m) {
+    ++m[0];
+    ++m[1];
+    ++m[2];
+    ++m[3];
+}
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_120_core_gc.h b/mesalib/src/mesa/shader/slang/library/slang_120_core_gc.h
new file mode 100644
index 000000000..1fdbddf7c
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_120_core_gc.h
@@ -0,0 +1,764 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */
+/* slang_120_core.gc */
+
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diff --git a/mesalib/src/mesa/shader/slang/library/slang_builtin_120_common.gc b/mesalib/src/mesa/shader/slang/library/slang_builtin_120_common.gc
new file mode 100644
index 000000000..c6264c3b4
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_builtin_120_common.gc
@@ -0,0 +1,200 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.6
+ *
+ * Copyright (C) 2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+//
+// From Shader Spec, ver. 1.20, rev. 6
+//
+
+//
+// 8.5 Matrix Functions
+//
+
+mat2x3 matrixCompMult (mat2x3 m, mat2x3 n) {
+    return mat2x3 (m[0] * n[0], m[1] * n[1]);
+}
+
+mat2x4 matrixCompMult (mat2x4 m, mat2x4 n) {
+    return mat2x4 (m[0] * n[0], m[1] * n[1]);
+}
+
+mat3x2 matrixCompMult (mat3x2 m, mat3x2 n) {
+    return mat3x2 (m[0] * n[0], m[1] * n[1], m[2] * n[2]);
+}
+
+mat3x4 matrixCompMult (mat3x4 m, mat3x4 n) {
+    return mat3x4 (m[0] * n[0], m[1] * n[1], m[2] * n[2]);
+}
+
+mat4x2 matrixCompMult (mat4x2 m, mat4x2 n) {
+    return mat4x2 (m[0] * n[0], m[1] * n[1], m[2] * n[2], m[3] * n[3]);
+}
+
+mat4x3 matrixCompMult (mat4x3 m, mat4x3 n) {
+    return mat4x3 (m[0] * n[0], m[1] * n[1], m[2] * n[2], m[3] * n[3]);
+}
+
+mat2 outerProduct (vec2 c, vec2 r) {
+    return mat2 (
+        c.x * r.x, c.y * r.x,
+        c.x * r.y, c.y * r.y
+    );
+}
+
+mat3 outerProduct (vec3 c, vec3 r) {
+    return mat3 (
+        c.x * r.x, c.y * r.x, c.z * r.x,
+        c.x * r.y, c.y * r.y, c.z * r.y,
+        c.x * r.z, c.y * r.z, c.z * r.z
+    );
+}
+
+mat4 outerProduct (vec4 c, vec4 r) {
+    return mat4 (
+        c.x * r.x, c.y * r.x, c.z * r.x, c.w * r.x,
+        c.x * r.y, c.y * r.y, c.z * r.y, c.w * r.y,
+        c.x * r.z, c.y * r.z, c.z * r.z, c.w * r.z,
+        c.x * r.w, c.y * r.w, c.z * r.w, c.w * r.w
+    );
+}
+
+mat2x3 outerProduct (vec3 c, vec2 r) {
+    return mat2x3 (
+        c.x * r.x, c.y * r.x, c.z * r.x,
+        c.x * r.y, c.y * r.y, c.z * r.y
+    );
+}
+
+mat3x2 outerProduct (vec2 c, vec3 r) {
+    return mat3x2 (
+        c.x * r.x, c.y * r.x,
+        c.x * r.y, c.y * r.y,
+        c.x * r.z, c.y * r.z
+    );
+}
+
+mat2x4 outerProduct (vec4 c, vec2 r) {
+    return mat2x4 (
+        c.x * r.x, c.y * r.x, c.z * r.x, c.w * r.x,
+        c.x * r.y, c.y * r.y, c.z * r.y, c.w * r.y
+    );
+}
+
+mat4x2 outerProduct (vec2 c, vec4 r) {
+    return mat4x2 (
+        c.x * r.x, c.y * r.x,
+        c.x * r.y, c.y * r.y,
+        c.x * r.z, c.y * r.z,
+        c.x * r.w, c.y * r.w
+    );
+}
+
+mat3x4 outerProduct (vec4 c, vec3 r) {
+    return mat3x4 (
+        c.x * r.x, c.y * r.x, c.z * r.x, c.w * r.x,
+        c.x * r.y, c.y * r.y, c.z * r.y, c.w * r.y,
+        c.x * r.z, c.y * r.z, c.z * r.z, c.w * r.z
+    );
+}
+
+mat4x3 outerProduct (vec3 c, vec4 r) {
+    return mat4x3 (
+        c.x * r.x, c.y * r.x, c.z * r.x,
+        c.x * r.y, c.y * r.y, c.z * r.y,
+        c.x * r.z, c.y * r.z, c.z * r.z,
+        c.x * r.w, c.y * r.w, c.z * r.w
+    );
+}
+
+mat2 transpose (mat2 m) {
+    return mat2 (
+        m[0].x, m[1].x,
+        m[0].y, m[1].y
+    );
+}
+
+mat3 transpose (mat3 m) {
+    return mat3 (
+        m[0].x, m[1].x, m[2].x,
+        m[0].y, m[1].y, m[2].y,
+        m[0].z, m[1].z, m[2].z
+    );
+}
+
+mat4 transpose (mat4 m) {
+    return mat4 (
+        m[0].x, m[1].x, m[2].x, m[3].x,
+        m[0].y, m[1].y, m[2].y, m[3].y,
+        m[0].z, m[1].z, m[2].z, m[3].z,
+        m[0].w, m[1].w, m[2].w, m[3].w
+    );
+}
+
+mat2x3 transpose (mat3x2 m) {
+    return mat2x3 (
+        m[0].x, m[1].x, m[2].x,
+        m[0].y, m[1].y, m[2].y
+    );
+}
+
+mat3x2 transpose (mat2x3 m) {
+    return mat3x2 (
+        m[0].x, m[1].x,
+        m[0].y, m[1].y,
+        m[0].z, m[1].z
+    );
+}
+
+mat2x4 transpose (mat4x2 m) {
+    return mat2x4 (
+        m[0].x, m[1].x, m[2].x, m[3].x,
+        m[0].y, m[1].y, m[2].y, m[3].y
+    );
+}
+
+mat4x2 transpose (mat2x4 m) {
+    return mat4x2 (
+        m[0].x, m[1].x,
+        m[0].y, m[1].y,
+        m[0].z, m[1].z,
+        m[0].w, m[1].w
+    );
+}
+
+mat3x4 transpose (mat4x3 m) {
+    return mat3x4 (
+        m[0].x, m[1].x, m[2].x, m[3].x,
+        m[0].y, m[1].y, m[2].y, m[3].y,
+        m[0].z, m[1].z, m[2].z, m[3].z
+    );
+}
+
+mat4x3 transpose (mat3x4 m) {
+    return mat4x3 (
+        m[0].x, m[1].x, m[2].x,
+        m[0].y, m[1].y, m[2].y,
+        m[0].z, m[1].z, m[2].z,
+        m[0].w, m[1].w, m[2].w
+    );
+}
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_builtin_120_common_gc.h b/mesalib/src/mesa/shader/slang/library/slang_builtin_120_common_gc.h
new file mode 100644
index 000000000..c397b9f0f
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_builtin_120_common_gc.h
@@ -0,0 +1,108 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */
+/* slang_builtin_120_common.gc */
+
+5,1,90,95,0,0,26,0,0,109,97,116,114,105,120,67,111,109,112,77,117,108,116,0,1,0,0,0,26,0,109,0,0,1,
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diff --git a/mesalib/src/mesa/shader/slang/library/slang_builtin_120_fragment.gc b/mesalib/src/mesa/shader/slang/library/slang_builtin_120_fragment.gc
new file mode 100644
index 000000000..7d516046a
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_builtin_120_fragment.gc
@@ -0,0 +1,30 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+//
+// From Shader Spec, ver. 1.20, rev. 6
+//
+
+varying vec2 gl_PointCoord;
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_builtin_120_fragment_gc.h b/mesalib/src/mesa/shader/slang/library/slang_builtin_120_fragment_gc.h
new file mode 100644
index 000000000..add3b5aea
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_builtin_120_fragment_gc.h
@@ -0,0 +1,5 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */
+/* slang_builtin_120_fragment.gc */
+
+5,2,2,90,95,3,0,10,0,1,103,108,95,80,111,105,110,116,67,111,111,114,100,0,0,0,0
diff --git a/mesalib/src/mesa/shader/slang/library/slang_common_builtin.gc b/mesalib/src/mesa/shader/slang/library/slang_common_builtin.gc
new file mode 100644
index 000000000..9764fc25b
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_common_builtin.gc
@@ -0,0 +1,1873 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.3
+ *
+ * Copyright (C) 2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2008  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+//
+// From Shader Spec, ver. 1.10, rev. 59
+//
+
+// Note: the values assigned to these constants here aren't actually used.
+// They're set by the compiler according to the GL context limits.
+// See slang_simplify.c
+const int gl_MaxLights = 8;
+const int gl_MaxClipPlanes = 6;
+const int gl_MaxTextureUnits = 8;
+const int gl_MaxTextureCoords = 8;
+const int gl_MaxVertexAttribs = 16;
+const int gl_MaxVertexUniformComponents = 512;
+const int gl_MaxVaryingFloats = 32;
+const int gl_MaxVertexTextureImageUnits = 0;
+const int gl_MaxCombinedTextureImageUnits = 2;
+const int gl_MaxTextureImageUnits = 2;
+const int gl_MaxFragmentUniformComponents = 64;
+const int gl_MaxDrawBuffers = 1;
+
+uniform mat4 gl_ModelViewMatrix;
+uniform mat4 gl_ProjectionMatrix;
+uniform mat4 gl_ModelViewProjectionMatrix;
+uniform mat4 gl_TextureMatrix[gl_MaxTextureCoords];
+
+uniform mat3 gl_NormalMatrix;
+
+uniform mat4 gl_ModelViewMatrixInverse;
+uniform mat4 gl_ProjectionMatrixInverse;
+uniform mat4 gl_ModelViewProjectionMatrixInverse;
+uniform mat4 gl_TextureMatrixInverse[gl_MaxTextureCoords];
+
+uniform mat4 gl_ModelViewMatrixTranspose;
+uniform mat4 gl_ProjectionMatrixTranspose;
+uniform mat4 gl_ModelViewProjectionMatrixTranspose;
+uniform mat4 gl_TextureMatrixTranspose[gl_MaxTextureCoords];
+
+uniform mat4 gl_ModelViewMatrixInverseTranspose;
+uniform mat4 gl_ProjectionMatrixInverseTranspose;
+uniform mat4 gl_ModelViewProjectionMatrixInverseTranspose;
+uniform mat4 gl_TextureMatrixInverseTranspose[gl_MaxTextureCoords];
+
+uniform float gl_NormalScale;
+
+struct gl_DepthRangeParameters {
+    float near;
+    float far;
+    float diff;
+};
+
+uniform gl_DepthRangeParameters gl_DepthRange;
+
+uniform vec4 gl_ClipPlane[gl_MaxClipPlanes];
+
+struct gl_PointParameters {
+    float size;
+    float sizeMin;
+    float sizeMax;
+    float fadeThresholdSize;
+    float distanceConstantAttenuation;
+    float distanceLinearAttenuation;
+    float distanceQuadraticAttenuation;
+};
+
+uniform gl_PointParameters gl_Point;
+
+struct gl_MaterialParameters {
+    vec4 emission;
+    vec4 ambient;
+    vec4 diffuse;
+    vec4 specular;
+    float shininess;
+};
+
+uniform gl_MaterialParameters gl_FrontMaterial;
+uniform gl_MaterialParameters gl_BackMaterial;
+
+/* NOTE: the order of these fields is significant!
+ * See the definition of the lighting state vars such as STATE_SPOT_DIRECTION.
+ */
+struct gl_LightSourceParameters {
+    vec4 ambient;
+    vec4 diffuse;
+    vec4 specular;
+    vec4 position;
+    vec4 halfVector;
+    vec3 spotDirection;
+    float spotCosCutoff;
+
+    float constantAttenuation;
+    float linearAttenuation;
+    float quadraticAttenuation;
+    float spotExponent;
+
+    float spotCutoff;
+};
+
+uniform gl_LightSourceParameters gl_LightSource[gl_MaxLights];
+
+struct gl_LightModelParameters {
+    vec4 ambient;
+};
+
+uniform gl_LightModelParameters gl_LightModel;
+
+struct gl_LightModelProducts {
+    vec4 sceneColor;
+};
+
+uniform gl_LightModelProducts gl_FrontLightModelProduct;
+uniform gl_LightModelProducts gl_BackLightModelProduct;
+
+struct gl_LightProducts {
+    vec4 ambient;
+    vec4 diffuse;
+    vec4 specular;
+};
+
+uniform gl_LightProducts gl_FrontLightProduct[gl_MaxLights];
+uniform gl_LightProducts gl_BackLightProduct[gl_MaxLights];
+
+uniform vec4 gl_TextureEnvColor[gl_MaxTextureImageUnits];
+uniform vec4 gl_EyePlaneS[gl_MaxTextureCoords];
+uniform vec4 gl_EyePlaneT[gl_MaxTextureCoords];
+uniform vec4 gl_EyePlaneR[gl_MaxTextureCoords];
+uniform vec4 gl_EyePlaneQ[gl_MaxTextureCoords];
+uniform vec4 gl_ObjectPlaneS[gl_MaxTextureCoords];
+uniform vec4 gl_ObjectPlaneT[gl_MaxTextureCoords];
+uniform vec4 gl_ObjectPlaneR[gl_MaxTextureCoords];
+uniform vec4 gl_ObjectPlaneQ[gl_MaxTextureCoords];
+
+struct gl_FogParameters {
+    vec4 color;
+    float density;
+    float start;
+    float end;
+    float scale;
+};
+
+uniform gl_FogParameters gl_Fog;
+
+
+
+
+
+//
+// 8.1 Angle and Trigonometry Functions
+//
+
+//// radians
+
+float radians(const float deg)
+{
+   const float c = 3.1415926 / 180.0;
+   __asm vec4_multiply __retVal, deg, c;
+}
+
+vec2 radians(const vec2 deg)
+{
+   const float c = 3.1415926 / 180.0;
+   __asm vec4_multiply __retVal.xy, deg.xy, c.xx;
+}
+
+vec3 radians(const vec3 deg)
+{
+   const float c = 3.1415926 / 180.0;
+   __asm vec4_multiply __retVal.xyz, deg.xyz, c.xxx;
+}
+
+vec4 radians(const vec4 deg)
+{
+   const float c = 3.1415926 / 180.0;
+   __asm vec4_multiply __retVal, deg, c.xxxx;
+}
+
+
+//// degrees
+
+float degrees(const float rad)
+{
+   const float c = 180.0 / 3.1415926;
+   __asm vec4_multiply __retVal, rad, c;
+}
+
+vec2 degrees(const vec2 rad)
+{
+   const float c = 180.0 / 3.1415926;
+   __asm vec4_multiply __retVal.xy, rad.xy, c.xx;
+}
+
+vec3 degrees(const vec3 rad)
+{
+   const float c = 180.0 / 3.1415926;
+   __asm vec4_multiply __retVal.xyz, rad.xyz, c.xxx;
+}
+
+vec4 degrees(const vec4 rad)
+{
+   const float c = 180.0 / 3.1415926;
+   __asm vec4_multiply __retVal, rad, c.xxxx;
+}
+
+
+//// sin
+
+float sin(const float radians)
+{
+   __asm float_sine __retVal, radians;
+}
+
+vec2 sin(const vec2 radians)
+{
+   __asm float_sine __retVal.x, radians.x;
+   __asm float_sine __retVal.y, radians.y;
+}
+
+vec3 sin(const vec3 radians)
+{
+   __asm float_sine __retVal.x, radians.x;
+   __asm float_sine __retVal.y, radians.y;
+   __asm float_sine __retVal.z, radians.z;
+}
+
+vec4 sin(const vec4 radians)
+{
+   __asm float_sine __retVal.x, radians.x;
+   __asm float_sine __retVal.y, radians.y;
+   __asm float_sine __retVal.z, radians.z;
+   __asm float_sine __retVal.w, radians.w;
+}
+
+
+//// cos
+
+float cos(const float radians)
+{
+   __asm float_cosine __retVal, radians;
+}
+
+vec2 cos(const vec2 radians)
+{
+   __asm float_cosine __retVal.x, radians.x;
+   __asm float_cosine __retVal.y, radians.y;
+}
+
+vec3 cos(const vec3 radians)
+{
+   __asm float_cosine __retVal.x, radians.x;
+   __asm float_cosine __retVal.y, radians.y;
+   __asm float_cosine __retVal.z, radians.z;
+}
+
+vec4 cos(const vec4 radians)
+{
+   __asm float_cosine __retVal.x, radians.x;
+   __asm float_cosine __retVal.y, radians.y;
+   __asm float_cosine __retVal.z, radians.z;
+   __asm float_cosine __retVal.w, radians.w;
+}
+
+
+
+//// tan
+
+float tan(const float angle)
+{
+   const float s = sin(angle);
+   const float c = cos(angle);
+   return s / c;
+}
+
+vec2 tan(const vec2 angle)
+{
+   const vec2 s = sin(angle);
+   const vec2 c = cos(angle);
+   return s / c;
+}
+
+vec3 tan(const vec3 angle)
+{
+   const vec3 s = sin(angle);
+   const vec3 c = cos(angle);
+   return s / c;
+}
+
+vec4 tan(const vec4 angle)
+{
+   const vec4 s = sin(angle);
+   const vec4 c = cos(angle);
+   return s / c;
+}
+
+
+
+float asin(const float x)
+{
+   const float a0 = 1.5707288;  // PI/2?
+   const float a1 = -0.2121144;
+   const float a2 = 0.0742610;
+   //const float a3 = -0.0187293;
+   const float halfPi = 3.1415926 * 0.5;
+   const float y = abs(x);
+   // three terms seem to be enough:
+   __retVal = (halfPi - sqrt(1.0 - y) * (a0 + y * (a1 + a2 * y))) * sign(x);
+   // otherwise, try four:
+   //__retVal = (halfPi - sqrt(1.0 - y) * (a0 + y * (a1 + y * (a2 + y * a3)))) * sign(x);
+}
+
+vec2 asin(const vec2 v)
+{
+   __retVal.x = asin(v.x);
+   __retVal.y = asin(v.y);
+}
+
+vec3 asin(const vec3 v)
+{
+   __retVal.x = asin(v.x);
+   __retVal.y = asin(v.y);
+   __retVal.z = asin(v.z);
+}
+
+vec4 asin(const vec4 v)
+{
+   __retVal.x = asin(v.x);
+   __retVal.y = asin(v.y);
+   __retVal.z = asin(v.z);
+   __retVal.w = asin(v.w);
+}
+
+float acos(const float x)
+{
+   const float halfPi = 3.1415926 * 0.5;
+   __retVal = halfPi - asin(x);
+}
+
+vec2 acos(const vec2 v)
+{
+   __retVal.x = acos(v.x);
+   __retVal.y = acos(v.y);
+}
+
+vec3 acos(const vec3 v)
+{
+   __retVal.x = acos(v.x);
+   __retVal.y = acos(v.y);
+   __retVal.z = acos(v.z);
+}
+
+vec4 acos(const vec4 v)
+{
+   __retVal.x = acos(v.x);
+   __retVal.y = acos(v.y);
+   __retVal.z = acos(v.z);
+   __retVal.w = acos(v.w);
+}
+
+float atan(const float x)
+{
+   __retVal = asin(x * inversesqrt(x * x + 1.0));
+}
+
+vec2 atan(const vec2 y_over_x)
+{
+   __retVal.x = atan(y_over_x.x);
+   __retVal.y = atan(y_over_x.y);
+}
+
+vec3 atan(const vec3 y_over_x)
+{
+   __retVal.x = atan(y_over_x.x);
+   __retVal.y = atan(y_over_x.y);
+   __retVal.z = atan(y_over_x.z);
+}
+
+vec4 atan(const vec4 y_over_x)
+{
+   __retVal.x = atan(y_over_x.x);
+   __retVal.y = atan(y_over_x.y);
+   __retVal.z = atan(y_over_x.z);
+   __retVal.w = atan(y_over_x.w);
+}
+
+float atan(const float y, const float x)
+{
+   float r;
+   if (abs(x) > 1.0e-4) {
+      r = atan(y / x);
+      if (x < 0.0) {
+         r = r + sign(y) * 3.141593;
+      }
+   }
+   else {
+      r = sign(y) * 1.5707965;  // pi/2
+   }
+   return r;
+}
+
+vec2 atan(const vec2 u, const vec2 v)
+{
+   __retVal.x = atan(u.x, v.x);
+   __retVal.y = atan(u.y, v.y);
+}
+
+vec3 atan(const vec3 u, const vec3 v)
+{
+   __retVal.x = atan(u.x, v.x);
+   __retVal.y = atan(u.y, v.y);
+   __retVal.z = atan(u.z, v.z);
+}
+
+vec4 atan(const vec4 u, const vec4 v)
+{
+   __retVal.x = atan(u.x, v.x);
+   __retVal.y = atan(u.y, v.y);
+   __retVal.z = atan(u.z, v.z);
+   __retVal.w = atan(u.w, v.w);
+}
+
+
+//
+// 8.2 Exponential Functions
+//
+
+//// pow
+
+float pow(const float a, const float b)
+{
+   __asm float_power __retVal, a, b;
+}
+
+vec2 pow(const vec2 a, const vec2 b)
+{
+   __asm float_power __retVal.x, a.x, b.x;
+   __asm float_power __retVal.y, a.y, b.y;
+}
+
+vec3 pow(const vec3 a, const vec3 b)
+{
+   __asm float_power __retVal.x, a.x, b.x;
+   __asm float_power __retVal.y, a.y, b.y;
+   __asm float_power __retVal.z, a.z, b.z;
+}
+
+vec4 pow(const vec4 a, const vec4 b)
+{
+   __asm float_power __retVal.x, a.x, b.x;
+   __asm float_power __retVal.y, a.y, b.y;
+   __asm float_power __retVal.z, a.z, b.z;
+   __asm float_power __retVal.w, a.w, b.w;
+}
+
+
+//// exp
+
+float exp(const float a)
+{
+   // NOTE: log2(e) = 1.44269502
+   float t = a * 1.44269502;
+   __asm float_exp2 __retVal, t;
+}
+
+vec2 exp(const vec2 a)
+{
+   vec2 t = a * 1.44269502;
+   __asm float_exp2 __retVal.x, t.x;
+   __asm float_exp2 __retVal.y, t.y;
+}
+
+vec3 exp(const vec3 a)
+{
+   vec3 t = a * 1.44269502;
+   __asm float_exp2 __retVal.x, t.x;
+   __asm float_exp2 __retVal.y, t.y;
+   __asm float_exp2 __retVal.z, t.z;
+}
+
+vec4 exp(const vec4 a)
+{
+   vec4 t = a * 1.44269502;
+   __asm float_exp2 __retVal.x, t.x;
+   __asm float_exp2 __retVal.y, t.y;
+   __asm float_exp2 __retVal.z, t.z;
+   __asm float_exp2 __retVal.w, t.w;
+}
+
+
+
+//// log2
+
+float log2(const float x)
+{
+   __asm float_log2 __retVal, x;
+}
+
+vec2 log2(const vec2 v)
+{
+   __asm float_log2 __retVal.x, v.x;
+   __asm float_log2 __retVal.y, v.y;
+}
+
+vec3 log2(const vec3 v)
+{
+   __asm float_log2 __retVal.x, v.x;
+   __asm float_log2 __retVal.y, v.y;
+   __asm float_log2 __retVal.z, v.z;
+}
+
+vec4 log2(const vec4 v)
+{
+   __asm float_log2 __retVal.x, v.x;
+   __asm float_log2 __retVal.y, v.y;
+   __asm float_log2 __retVal.z, v.z;
+   __asm float_log2 __retVal.w, v.w;
+}
+
+
+//// log  (natural log)
+
+float log(const float x)
+{
+   // note:  logBaseB(x) = logBaseN(x) / logBaseN(B)
+   // compute log(x) = log2(x) / log2(e)
+   // c = 1.0 / log2(e) = 0.693147181
+   const float c = 0.693147181;
+   return log2(x) * c;
+}
+
+vec2 log(const vec2 v)
+{
+   const float c = 0.693147181;
+   return log2(v) * c;
+}
+
+vec3 log(const vec3 v)
+{
+   const float c = 0.693147181;
+   return log2(v) * c;
+}
+
+vec4 log(const vec4 v)
+{
+   const float c = 0.693147181;
+   return log2(v) * c;
+}
+
+
+//// exp2
+
+float exp2(const float a)
+{
+   __asm float_exp2 __retVal, a;
+}
+
+vec2 exp2(const vec2 a)
+{
+   __asm float_exp2 __retVal.x, a.x;
+   __asm float_exp2 __retVal.y, a.y;
+}
+
+vec3 exp2(const vec3 a)
+{
+   __asm float_exp2 __retVal.x, a.x;
+   __asm float_exp2 __retVal.y, a.y;
+   __asm float_exp2 __retVal.z, a.z;
+}
+
+vec4 exp2(const vec4 a)
+{
+   __asm float_exp2 __retVal.x, a.x;
+   __asm float_exp2 __retVal.y, a.y;
+   __asm float_exp2 __retVal.z, a.z;
+   __asm float_exp2 __retVal.w, a.w;
+}
+
+
+//// sqrt
+
+float sqrt(const float x)
+{
+   float r;
+   __asm float_rsq r, x;
+   __asm float_rcp __retVal, r;
+}
+
+vec2 sqrt(const vec2 v)
+{
+   float r;
+   __asm float_rsq r, v.x;
+   __asm float_rcp __retVal.x, r;
+   __asm float_rsq r, v.y;
+   __asm float_rcp __retVal.y, r;
+}
+
+vec3 sqrt(const vec3 v)
+{
+   float r;
+   __asm float_rsq r, v.x;
+   __asm float_rcp __retVal.x, r;
+   __asm float_rsq r, v.y;
+   __asm float_rcp __retVal.y, r;
+   __asm float_rsq r, v.z;
+   __asm float_rcp __retVal.z, r;
+}
+
+vec4 sqrt(const vec4 v)
+{
+   float r;
+   __asm float_rsq r, v.x;
+   __asm float_rcp __retVal.x, r;
+   __asm float_rsq r, v.y;
+   __asm float_rcp __retVal.y, r;
+   __asm float_rsq r, v.z;
+   __asm float_rcp __retVal.z, r;
+   __asm float_rsq r, v.w;
+   __asm float_rcp __retVal.w, r;
+}
+
+
+//// inversesqrt
+
+float inversesqrt(const float x)
+{
+   __asm float_rsq __retVal.x, x;
+}
+
+vec2 inversesqrt(const vec2 v)
+{
+   __asm float_rsq __retVal.x, v.x;
+   __asm float_rsq __retVal.y, v.y;
+}
+
+vec3 inversesqrt(const vec3 v)
+{
+   __asm float_rsq __retVal.x, v.x;
+   __asm float_rsq __retVal.y, v.y;
+   __asm float_rsq __retVal.z, v.z;
+}
+
+vec4 inversesqrt(const vec4 v)
+{
+   __asm float_rsq __retVal.x, v.x;
+   __asm float_rsq __retVal.y, v.y;
+   __asm float_rsq __retVal.z, v.z;
+   __asm float_rsq __retVal.w, v.w;
+}
+
+
+//// normalize
+
+float normalize(const float x)
+{
+   __retVal = 1.0;
+}
+
+vec2 normalize(const vec2 v)
+{
+   const float s = inversesqrt(dot(v, v));
+   __asm vec4_multiply __retVal.xy, v, s;
+}
+
+vec3 normalize(const vec3 v)
+{
+//   const float s = inversesqrt(dot(v, v));
+//   __retVal = v * s;
+// XXX note, we _could_ use __retVal.w instead of tmp and and save a
+// register, but that's actually a compilation error because v is a vec3
+// and the .w suffix is illegal.  Oh well.
+   float tmp;
+   __asm vec3_dot tmp, v, v;
+   __asm float_rsq tmp, tmp;
+   __asm vec4_multiply __retVal.xyz, v, tmp;
+}
+
+vec4 normalize(const vec4 v)
+{
+   float tmp;
+   __asm vec4_dot tmp, v, v;
+   __asm float_rsq tmp, tmp;
+   __asm vec4_multiply __retVal.xyz, v, tmp;
+}
+
+
+
+//
+// 8.3 Common Functions
+//
+
+
+//// abs
+
+float abs(const float a)
+{
+   __asm vec4_abs __retVal, a;
+}
+
+vec2 abs(const vec2 a)
+{
+   __asm vec4_abs __retVal.xy, a;
+}
+
+vec3 abs(const vec3 a)
+{
+   __asm vec4_abs __retVal.xyz, a;
+}
+
+vec4 abs(const vec4 a)
+{
+   __asm vec4_abs __retVal, a;
+}
+
+
+//// sign
+
+float sign(const float x)
+{
+   float p, n;
+   __asm vec4_sgt p, x, 0.0;            // p = (x > 0)
+   __asm vec4_sgt n, 0.0, x;            // n = (x < 0)
+   __asm vec4_subtract __retVal, p, n;  // sign = p - n
+}
+
+vec2 sign(const vec2 v)
+{
+   vec2 p, n;
+   __asm vec4_sgt p.xy, v, 0.0;
+   __asm vec4_sgt n.xy, 0.0, v;
+   __asm vec4_subtract __retVal.xy, p, n;
+}
+
+vec3 sign(const vec3 v)
+{
+   vec3 p, n;
+   __asm vec4_sgt p.xyz, v, 0.0;
+   __asm vec4_sgt n.xyz, 0.0, v;
+   __asm vec4_subtract __retVal.xyz, p, n;
+}
+
+vec4 sign(const vec4 v)
+{
+   vec4 p, n;
+   __asm vec4_sgt p, v, 0.0;
+   __asm vec4_sgt n, 0.0, v;
+   __asm vec4_subtract __retVal, p, n;
+}
+
+
+//// floor
+
+float floor(const float a)
+{
+   __asm vec4_floor __retVal, a;
+}
+
+vec2 floor(const vec2 a)
+{
+   __asm vec4_floor __retVal.xy, a;
+}
+
+vec3 floor(const vec3 a)
+{
+   __asm vec4_floor __retVal.xyz, a;
+}
+
+vec4 floor(const vec4 a)
+{
+   __asm vec4_floor __retVal, a;
+}
+
+
+//// ceil
+
+float ceil(const float a)
+{
+   // XXX this could be improved
+   float b = -a;
+   __asm vec4_floor b, b;
+   __retVal = -b;
+}
+
+vec2 ceil(const vec2 a)
+{
+   vec2 b = -a;
+   __asm vec4_floor b, b;
+   __retVal.xy = -b;
+}
+
+vec3 ceil(const vec3 a)
+{
+   vec3 b = -a;
+   __asm vec4_floor b, b;
+   __retVal.xyz = -b;
+}
+
+vec4 ceil(const vec4 a)
+{
+   vec4 b = -a;
+   __asm vec4_floor b, b;
+   __retVal = -b;
+}
+
+
+//// fract
+
+float fract(const float a)
+{
+   __asm vec4_frac __retVal, a;
+}
+
+vec2 fract(const vec2 a)
+{
+   __asm vec4_frac __retVal.xy, a;
+}
+
+vec3 fract(const vec3 a)
+{
+   __asm vec4_frac __retVal.xyz, a;
+}
+
+vec4 fract(const vec4 a)
+{
+   __asm vec4_frac __retVal, a;
+}
+
+
+//// mod  (very untested!)
+
+float mod(const float a, const float b)
+{
+    float oneOverB;
+    __asm float_rcp oneOverB, b;
+    __retVal = a - b * floor(a * oneOverB);
+}
+
+vec2 mod(const vec2 a, const float b)
+{
+    float oneOverB;
+    __asm float_rcp oneOverB, b;
+    __retVal.xy = a - b * floor(a * oneOverB);
+}
+
+vec3 mod(const vec3 a, const float b)
+{
+    float oneOverB;
+    __asm float_rcp oneOverB, b;
+    __retVal.xyz = a - b * floor(a * oneOverB);
+}
+
+vec4 mod(const vec4 a, const float b)
+{
+    float oneOverB;
+    __asm float_rcp oneOverB, b;
+    __retVal = a - b * floor(a * oneOverB);
+}
+
+vec2 mod(const vec2 a, const vec2 b)
+{
+    vec2 oneOverB;
+    __asm float_rcp oneOverB.x, b.x;
+    __asm float_rcp oneOverB.y, b.y;
+    __retVal = a - b * floor(a * oneOverB);
+}
+
+vec3 mod(const vec3 a, const vec3 b)
+{
+    vec3 oneOverB;
+    __asm float_rcp oneOverB.x, b.x;
+    __asm float_rcp oneOverB.y, b.y;
+    __asm float_rcp oneOverB.z, b.z;
+    __retVal = a - b * floor(a * oneOverB);
+}
+
+vec4 mod(const vec4 a, const vec4 b)
+{
+    vec4 oneOverB;
+    __asm float_rcp oneOverB.x, b.x;
+    __asm float_rcp oneOverB.y, b.y;
+    __asm float_rcp oneOverB.z, b.z;
+    __asm float_rcp oneOverB.w, b.w;
+    __retVal = a - b * floor(a * oneOverB);
+}
+
+
+//// min
+
+float min(const float a, const float b)
+{
+   __asm vec4_min __retVal, a, b;
+}
+
+vec2 min(const vec2 a, const vec2 b)
+{
+   __asm vec4_min __retVal.xy, a.xy, b.xy;
+}
+
+vec3 min(const vec3 a, const vec3 b)
+{
+   __asm vec4_min __retVal.xyz, a.xyz, b.xyz;
+}
+
+vec4 min(const vec4 a, const vec4 b)
+{
+   __asm vec4_min __retVal, a, b;
+}
+
+vec2 min(const vec2 a, const float b)
+{
+   __asm vec4_min __retVal, a.xy, b;
+}
+
+vec3 min(const vec3 a, const float b)
+{
+   __asm vec4_min __retVal, a.xyz, b;
+}
+
+vec4 min(const vec4 a, const float b)
+{
+   __asm vec4_min __retVal, a, b;
+}
+
+
+//// max
+
+float max(const float a, const float b)
+{
+   __asm vec4_max __retVal, a, b;
+}
+
+vec2 max(const vec2 a, const vec2 b)
+{
+   __asm vec4_max __retVal.xy, a.xy, b.xy;
+}
+
+vec3 max(const vec3 a, const vec3 b)
+{
+   __asm vec4_max __retVal.xyz, a.xyz, b.xyz;
+}
+
+vec4 max(const vec4 a, const vec4 b)
+{
+   __asm vec4_max __retVal, a, b;
+}
+
+vec2 max(const vec2 a, const float b)
+{
+   __asm vec4_max __retVal, a.xy, b;
+}
+
+vec3 max(const vec3 a, const float b)
+{
+   __asm vec4_max __retVal, a.xyz, b;
+}
+
+vec4 max(const vec4 a, const float b)
+{
+   __asm vec4_max __retVal, a, b;
+}
+
+
+//// clamp
+
+float clamp(const float val, const float minVal, const float maxVal)
+{
+   __asm vec4_clamp __retVal, val, minVal, maxVal;
+}
+
+vec2 clamp(const vec2 val, const float minVal, const float maxVal)
+{
+   __asm vec4_clamp __retVal, val, minVal, maxVal;
+}
+
+vec3 clamp(const vec3 val, const float minVal, const float maxVal)
+{
+   __asm vec4_clamp __retVal, val, minVal, maxVal;
+}
+
+vec4 clamp(const vec4 val, const float minVal, const float maxVal)
+{
+   __asm vec4_clamp __retVal, val, minVal, maxVal;
+}
+
+vec2 clamp(const vec2 val, const vec2 minVal, const vec2 maxVal)
+{
+   __asm vec4_clamp __retVal, val, minVal, maxVal;
+}
+
+vec3 clamp(const vec3 val, const vec3 minVal, const vec3 maxVal)
+{
+   __asm vec4_clamp __retVal, val, minVal, maxVal;
+}
+
+vec4 clamp(const vec4 val, const vec4 minVal, const vec4 maxVal)
+{
+   __asm vec4_clamp __retVal, val, minVal, maxVal;
+}
+
+
+//// mix
+
+float mix(const float x, const float y, const float a)
+{
+   __asm vec4_lrp __retVal, a, y, x;
+}
+
+vec2 mix(const vec2 x, const vec2 y, const float a)
+{
+   __asm vec4_lrp __retVal, a, y, x;
+}
+
+vec3 mix(const vec3 x, const vec3 y, const float a)
+{
+   __asm vec4_lrp __retVal, a, y, x;
+}
+
+vec4 mix(const vec4 x, const vec4 y, const float a)
+{
+   __asm vec4_lrp __retVal, a, y, x;
+}
+
+vec2 mix(const vec2 x, const vec2 y, const vec2 a)
+{
+   __asm vec4_lrp __retVal, a, y, x;
+}
+
+vec3 mix(const vec3 x, const vec3 y, const vec3 a)
+{
+   __asm vec4_lrp __retVal, a, y, x;
+}
+
+vec4 mix(const vec4 x, const vec4 y, const vec4 a)
+{
+   __asm vec4_lrp __retVal, a, y, x;
+}
+
+
+//// step
+
+float step(const float edge, const float x)
+{
+   __asm vec4_sge __retVal, x, edge;
+}
+
+vec2 step(const vec2 edge, const vec2 x)
+{
+   __asm vec4_sge __retVal.xy, x, edge;
+}
+
+vec3 step(const vec3 edge, const vec3 x)
+{
+   __asm vec4_sge __retVal.xyz, x, edge;
+}
+
+vec4 step(const vec4 edge, const vec4 x)
+{
+   __asm vec4_sge __retVal, x, edge;
+}
+
+vec2 step(const float edge, const vec2 v)
+{
+   __asm vec4_sge __retVal.xy, v, edge;
+}
+
+vec3 step(const float edge, const vec3 v)
+{
+   __asm vec4_sge __retVal.xyz, v, edge;
+}
+
+vec4 step(const float edge, const vec4 v)
+{
+   __asm vec4_sge __retVal, v, edge;
+}
+
+
+//// smoothstep
+
+float smoothstep(const float edge0, const float edge1, const float x)
+{
+    float t = clamp((x - edge0) / (edge1 - edge0), 0.0, 1.0);
+    return t * t * (3.0 - 2.0 * t);
+}
+
+vec2 smoothstep(const vec2 edge0, const vec2 edge1, const vec2 v)
+{
+   vec2 t = clamp((v - edge0) / (edge1 - edge0), 0.0, 1.0);
+   return t * t * (3.0 - 2.0 * t);
+}
+
+vec3 smoothstep(const vec3 edge0, const vec3 edge1, const vec3 v)
+{
+   vec3 t = clamp((v - edge0) / (edge1 - edge0), 0.0, 1.0);
+   return t * t * (3.0 - 2.0 * t);
+}
+
+vec4 smoothstep(const vec4 edge0, const vec4 edge1, const vec4 v)
+{
+   vec4 t = clamp((v - edge0) / (edge1 - edge0), 0.0, 1.0);
+   return t * t * (3.0 - 2.0 * t);
+}
+
+vec2 smoothstep(const float edge0, const float edge1, const vec2 v)
+{
+   vec2 t = clamp((v - edge0) / (edge1 - edge0), 0.0, 1.0);
+   return t * t * (3.0 - 2.0 * t);
+}
+
+vec3 smoothstep(const float edge0, const float edge1, const vec3 v)
+{
+   vec3 t = clamp((v - edge0) / (edge1 - edge0), 0.0, 1.0);
+   return t * t * (3.0 - 2.0 * t);
+}
+
+vec4 smoothstep(const float edge0, const float edge1, const vec4 v)
+{
+   vec4 t = clamp((v - edge0) / (edge1 - edge0), 0.0, 1.0);
+   return t * t * (3.0 - 2.0 * t);
+}
+
+
+
+//
+// 8.4 Geometric Functions
+//
+
+
+//// length
+
+float length(const float x)
+{
+   return abs(x);
+}
+
+float length(const vec2 v)
+{
+   float r;
+   const float p = dot(v, v);      // p = v.x * v.x + v.y * v.y
+   __asm float_rsq r, p;           // r = 1 / sqrt(p)
+   __asm float_rcp __retVal.x, r;  // retVal = 1 / r
+}
+
+float length(const vec3 v)
+{
+   float r;
+   const float p = dot(v, v);      // p = v.x * v.x + v.y * v.y + v.z * v.z
+   __asm float_rsq r, p;           // r = 1 / sqrt(p)
+   __asm float_rcp __retVal, r;    // retVal = 1 / r
+}
+
+float length(const vec4 v)
+{
+   float r;
+   const float p = dot(v, v);      // p = v.x * v.x + v.y * v.y + ...
+   __asm float_rsq r, p;           // r = 1 / sqrt(p)
+   __asm float_rcp __retVal, r;    // retVal = 1 / r
+}
+
+
+//// distance
+
+float distance(const float x, const float y)
+{
+   const float d = x - y;
+   __retVal = length(d);
+}
+
+float distance(const vec2 v, const vec2 u)
+{
+   const vec2 d2 = v - u;
+   __retVal = length(d2);
+}
+
+float distance(const vec3 v, const vec3 u)
+{
+   const vec3 d3 = v - u;
+   __retVal = length(d3);
+}
+
+float distance(const vec4 v, const vec4 u)
+{
+   const vec4 d4 = v - u;
+   __retVal = length(d4);
+}
+
+
+//// cross
+
+vec3 cross(const vec3 v, const vec3 u)
+{
+   __asm vec3_cross __retVal.xyz, v, u;
+}
+
+
+//// faceforward
+
+float faceforward(const float N, const float I, const float Nref)
+{
+    // this could probably be done better
+    const float d = dot(Nref, I);
+    float s;
+    __asm vec4_sgt s, 0.0, d;  // s = (0.0 > d) ? 1 : 0
+    return mix(-N, N, s);
+}
+
+vec2 faceforward(const vec2 N, const vec2 I, const vec2 Nref)
+{
+    // this could probably be done better
+    const float d = dot(Nref, I);
+    float s;
+    __asm vec4_sgt s, 0.0, d;  // s = (0.0 > d) ? 1 : 0
+    return mix(-N, N, s);
+}
+
+vec3 faceforward(const vec3 N, const vec3 I, const vec3 Nref)
+{
+    // this could probably be done better
+    const float d = dot(Nref, I);
+    float s;
+    __asm vec4_sgt s, 0.0, d;  // s = (0.0 > d) ? 1 : 0
+    return mix(-N, N, s);
+}
+
+vec4 faceforward(const vec4 N, const vec4 I, const vec4 Nref)
+{
+    // this could probably be done better
+    const float d = dot(Nref, I);
+    float s;
+    __asm vec4_sgt s, 0.0, d;  // s = (0.0 > d) ? 1 : 0
+    return mix(-N, N, s);
+}
+
+
+//// reflect
+
+float reflect(const float I, const float N)
+{
+   return I - 2.0 * dot(N, I) * N;
+}
+
+vec2 reflect(const vec2 I, const vec2 N)
+{
+   return I - 2.0 * dot(N, I) * N;
+}
+
+vec3 reflect(const vec3 I, const vec3 N)
+{
+   return I - 2.0 * dot(N, I) * N;
+}
+
+vec4 reflect(const vec4 I, const vec4 N)
+{
+   return I - 2.0 * dot(N, I) * N;
+}
+
+//// refract
+
+float refract(const float I, const float N, const float eta)
+{
+   float n_dot_i = dot(N, I);
+   float k = 1.0 - eta * eta * (1.0 - n_dot_i * n_dot_i);
+   float retval;
+   if (k < 0.0)
+      retval = 0.0;
+   else
+      retval = eta * I - (eta * n_dot_i + sqrt(k)) * N;
+   return retval;
+}
+
+vec2 refract(const vec2 I, const vec2 N, const float eta)
+{
+   float n_dot_i = dot(N, I);
+   float k = 1.0 - eta * eta * (1.0 - n_dot_i * n_dot_i);
+   vec2 retval;
+   if (k < 0.0)
+      retval = vec2(0.0);
+   else
+      retval = eta * I - (eta * n_dot_i + sqrt(k)) * N;
+   return retval;
+}
+
+vec3 refract(const vec3 I, const vec3 N, const float eta)
+{
+   float n_dot_i = dot(N, I);
+   float k = 1.0 - eta * eta * (1.0 - n_dot_i * n_dot_i);
+   vec3 retval;
+   if (k < 0.0)
+      retval = vec3(0.0);
+   else
+      retval = eta * I - (eta * n_dot_i + sqrt(k)) * N;
+   return retval;
+}
+
+vec4 refract(const vec4 I, const vec4 N, const float eta)
+{
+   float n_dot_i = dot(N, I);
+   float k = 1.0 - eta * eta * (1.0 - n_dot_i * n_dot_i);
+   vec4 retval;
+   if (k < 0.0)
+      retval = vec4(0.0);
+   else
+      retval = eta * I - (eta * n_dot_i + sqrt(k)) * N;
+   return retval;
+}
+
+
+
+
+//
+// 8.5 Matrix Functions
+//
+
+mat2 matrixCompMult (mat2 m, mat2 n) {
+    return mat2 (m[0] * n[0], m[1] * n[1]);
+}
+
+mat3 matrixCompMult (mat3 m, mat3 n) {
+    return mat3 (m[0] * n[0], m[1] * n[1], m[2] * n[2]);
+}
+
+mat4 matrixCompMult (mat4 m, mat4 n) {
+    return mat4 (m[0] * n[0], m[1] * n[1], m[2] * n[2], m[3] * n[3]);
+}
+
+
+
+
+//
+// 8.6 Vector Relational Functions
+//
+
+//// lessThan
+
+bvec2 lessThan(const vec2 u, const vec2 v)
+{
+   __asm vec4_slt __retVal.xy, u, v;
+}
+
+bvec3 lessThan(const vec3 u, const vec3 v)
+{
+   __asm vec4_slt __retVal.xyz, u, v;
+}
+
+bvec4 lessThan(const vec4 u, const vec4 v)
+{
+   __asm vec4_slt __retVal, u, v;
+}
+
+bvec2 lessThan(const ivec2 u, const ivec2 v)
+{
+   __asm vec4_slt __retVal.xy, u, v;
+}
+
+bvec3 lessThan(const ivec3 u, const ivec3 v)
+{
+   __asm vec4_slt __retVal.xyz, u, v;
+}
+
+bvec4 lessThan(const ivec4 u, const ivec4 v)
+{
+   __asm vec4_slt __retVal, u, v;
+}
+
+
+//// lessThanEqual
+
+bvec2 lessThanEqual(const vec2 u, const vec2 v)
+{
+   __asm vec4_sle __retVal.xy, u, v;
+}
+
+bvec3 lessThanEqual(const vec3 u, const vec3 v)
+{
+   __asm vec4_sle __retVal.xyz, u, v;
+}
+
+bvec4 lessThanEqual(const vec4 u, const vec4 v)
+{
+   __asm vec4_sle __retVal, u, v;
+}
+
+bvec2 lessThanEqual(const ivec2 u, const ivec2 v)
+{
+   __asm vec4_sle __retVal.xy, u, v;
+}
+
+bvec3 lessThanEqual(const ivec3 u, const ivec3 v)
+{
+   __asm vec4_sle __retVal.xyz, u, v;
+}
+
+bvec4 lessThanEqual(const ivec4 u, const ivec4 v)
+{
+   __asm vec4_sle __retVal, u, v;
+}
+
+
+//// greaterThan
+
+bvec2 greaterThan(const vec2 u, const vec2 v)
+{
+   __asm vec4_sgt __retVal.xy, u, v;
+}
+
+bvec3 greaterThan(const vec3 u, const vec3 v)
+{
+   __asm vec4_sgt __retVal.xyz, u, v;
+}
+
+bvec4 greaterThan(const vec4 u, const vec4 v)
+{
+   __asm vec4_sgt __retVal, u, v;
+}
+
+bvec2 greaterThan(const ivec2 u, const ivec2 v)
+{
+   __asm vec4_sgt __retVal.xy, u.xy, v.xy;
+}
+
+bvec3 greaterThan(const ivec3 u, const ivec3 v)
+{
+   __asm vec4_sgt __retVal.xyz, u, v;
+}
+
+bvec4 greaterThan(const ivec4 u, const ivec4 v)
+{
+   __asm vec4_sgt __retVal, u, v;
+}
+
+
+//// greaterThanEqual
+
+bvec2 greaterThanEqual(const vec2 u, const vec2 v)
+{
+   __asm vec4_sge __retVal.xy, u, v;
+}
+
+bvec3 greaterThanEqual(const vec3 u, const vec3 v)
+{
+   __asm vec4_sge __retVal.xyz, u, v;
+}
+
+bvec4 greaterThanEqual(const vec4 u, const vec4 v)
+{
+   __asm vec4_sge __retVal, u, v;
+}
+
+bvec2 greaterThanEqual(const ivec2 u, const ivec2 v)
+{
+   __asm vec4_sge __retVal.xy, u, v;
+}
+
+bvec3 greaterThanEqual(const ivec3 u, const ivec3 v)
+{
+   __asm vec4_sge __retVal.xyz, u, v;
+}
+
+bvec4 greaterThanEqual(const ivec4 u, const ivec4 v)
+{
+   __asm vec4_sge __retVal, u, v;
+}
+
+
+//// equal
+
+bvec2 equal(const vec2 u, const vec2 v)
+{
+   __asm vec4_seq __retVal.xy, u, v;
+}
+
+bvec3 equal(const vec3 u, const vec3 v)
+{
+   __asm vec4_seq __retVal.xyz, u, v;
+}
+
+bvec4 equal(const vec4 u, const vec4 v)
+{
+   __asm vec4_seq __retVal, u, v;
+}
+
+bvec2 equal(const ivec2 u, const ivec2 v)
+{
+   __asm vec4_seq __retVal.xy, u, v;
+}
+
+bvec3 equal(const ivec3 u, const ivec3 v)
+{
+   __asm vec4_seq __retVal.xyz, u, v;
+}
+
+bvec4 equal(const ivec4 u, const ivec4 v)
+{
+   __asm vec4_seq __retVal, u, v;
+}
+
+bvec2 equal(const bvec2 u, const bvec2 v)
+{
+   __asm vec4_seq __retVal.xy, u, v;
+}
+
+bvec3 equal(const bvec3 u, const bvec3 v)
+{
+   __asm vec4_seq __retVal.xyz, u, v;
+}
+
+bvec4 equal(const bvec4 u, const bvec4 v)
+{
+   __asm vec4_seq __retVal, u, v;
+}
+
+
+
+
+//// notEqual
+
+bvec2 notEqual(const vec2 u, const vec2 v)
+{
+   __asm vec4_sne __retVal.xy, u, v;
+}
+
+bvec3 notEqual(const vec3 u, const vec3 v)
+{
+   __asm vec4_sne __retVal.xyz, u, v;
+}
+
+bvec4 notEqual(const vec4 u, const vec4 v)
+{
+   __asm vec4_sne __retVal, u, v;
+}
+
+bvec2 notEqual(const ivec2 u, const ivec2 v)
+{
+   __asm vec4_sne __retVal.xy, u, v;
+}
+
+bvec3 notEqual(const ivec3 u, const ivec3 v)
+{
+   __asm vec4_sne __retVal.xyz, u, v;
+}
+
+bvec4 notEqual(const ivec4 u, const ivec4 v)
+{
+   __asm vec4_sne __retVal, u, v;
+}
+
+bvec2 notEqual(const bvec2 u, const bvec2 v)
+{
+   __asm vec4_sne __retVal.xy, u, v;
+}
+
+bvec3 notEqual(const bvec3 u, const bvec3 v)
+{
+   __asm vec4_sne __retVal.xyz, u, v;
+}
+
+bvec4 notEqual(const bvec4 u, const bvec4 v)
+{
+   __asm vec4_sne __retVal, u, v;
+}
+
+
+
+//// any
+
+bool any(const bvec2 v)
+{
+   float sum;
+   __asm vec4_add sum.x, v.x, v.y;
+   __asm vec4_sne __retVal.x, sum.x, 0.0;
+}
+
+bool any(const bvec3 v)
+{
+   float sum;
+   __asm vec4_add sum.x, v.x, v.y;
+   __asm vec4_add sum.x, sum.x, v.z;
+   __asm vec4_sne __retVal.x, sum.x, 0.0;
+}
+
+bool any(const bvec4 v)
+{
+   float sum;
+   __asm vec4_add sum.x, v.x, v.y;
+   __asm vec4_add sum.x, sum.x, v.z;
+   __asm vec4_add sum.x, sum.x, v.w;
+   __asm vec4_sne __retVal.x, sum.x, 0.0;
+}
+
+
+//// all
+
+bool all (const bvec2 v)
+{
+   float prod;
+   __asm vec4_multiply prod, v.x, v.y;
+   __asm vec4_sne __retVal, prod, 0.0;
+}
+
+bool all (const bvec3 v)
+{
+   float prod;
+   __asm vec4_multiply prod, v.x, v.y;
+   __asm vec4_multiply prod, prod, v.z;
+   __asm vec4_sne __retVal, prod, 0.0;
+}
+
+bool all (const bvec4 v)
+{
+   float prod;
+   __asm vec4_multiply prod, v.x, v.y;
+   __asm vec4_multiply prod, prod, v.z;
+   __asm vec4_multiply prod, prod, v.w;
+   __asm vec4_sne __retVal, prod, 0.0;
+}
+
+
+
+//// not
+
+bvec2 not (const bvec2 v)
+{
+   __asm vec4_seq __retVal.xy, v, 0.0;
+}
+
+bvec3 not (const bvec3 v)
+{
+   __asm vec4_seq __retVal.xyz, v, 0.0;
+}
+
+bvec4 not (const bvec4 v)
+{
+   __asm vec4_seq __retVal, v, 0.0;
+}
+
+
+
+//// Texture Lookup Functions  (for both fragment and vertex shaders)
+
+vec4 texture1D(const sampler1D sampler, const float coord)
+{
+   __asm vec4_tex_1d __retVal, sampler, coord;
+}
+
+vec4 texture1DProj(const sampler1D sampler, const vec2 coord)
+{
+   // need to swizzle .y into .w
+   __asm vec4_tex_1d_proj __retVal, sampler, coord.xyyy;
+}
+
+vec4 texture1DProj(const sampler1D sampler, const vec4 coord)
+{
+   __asm vec4_tex_1d_proj __retVal, sampler, coord;
+}
+
+
+vec4 texture2D(const sampler2D sampler, const vec2 coord)
+{
+   __asm vec4_tex_2d __retVal, sampler, coord;
+}
+
+vec4 texture2DProj(const sampler2D sampler, const vec3 coord)
+{
+   // need to swizzle 'z' into 'w'.
+   __asm vec4_tex_2d_proj __retVal, sampler, coord.xyzz;
+}
+
+vec4 texture2DProj(const sampler2D sampler, const vec4 coord)
+{
+   __asm vec4_tex_2d_proj __retVal, sampler, coord;
+}
+
+
+vec4 texture3D(const sampler3D sampler, const vec3 coord)
+{
+   __asm vec4_tex_3d __retVal, sampler, coord;
+}
+
+vec4 texture3DProj(const sampler3D sampler, const vec4 coord)
+{
+   __asm vec4_tex_3d_proj __retVal, sampler, coord;
+}
+
+
+vec4 textureCube(const samplerCube sampler, const vec3 coord)
+{
+   __asm vec4_tex_cube __retVal, sampler, coord;
+}
+
+
+
+vec4 shadow1D(const sampler1DShadow sampler, const vec3 coord)
+{
+   __asm vec4_tex_1d_shadow __retVal, sampler, coord;
+}
+
+vec4 shadow1DProj(const sampler1DShadow sampler, const vec4 coord)
+{
+   // .s and .p will be divided by .q
+   __asm vec4_tex_1d_proj_shadow __retVal, sampler, coord;
+}
+
+vec4 shadow2D(const sampler2DShadow sampler, const vec3 coord)
+{
+   __asm vec4_tex_2d_shadow __retVal, sampler, coord;
+}
+
+vec4 shadow2DProj(const sampler2DShadow sampler, const vec4 coord)
+{
+   // .s, .t and .p will be divided by .q
+   __asm vec4_tex_2d_proj_shadow __retVal, sampler, coord;
+}
+
+
+//// GL_ARB_texture_rectangle:
+vec4 texture2DRect(const sampler2DRect sampler, const vec2 coord)
+{
+   __asm vec4_tex_rect __retVal, sampler, coord;
+}
+
+vec4 texture2DRectProj(const sampler2DRect sampler, const vec3 coord)
+{
+   // need to swizzle .y into .w
+   __asm vec4_tex_rect_proj __retVal, sampler, coord.xyzz;
+}
+
+vec4 texture2DRectProj(const sampler2DRect sampler, const vec4 coord)
+{
+   __asm vec4_tex_rect_proj __retVal, sampler, ccoord;
+}
+
+vec4 shadow2DRect(const sampler2DRectShadow sampler, const vec3 coord)
+{
+   __asm vec4_tex_rect_shadow __retVal, sampler, coord;
+}
+
+vec4 shadow2DRectProj(const sampler2DRectShadow sampler, const vec4 coord)
+{
+   __asm vec4_tex_rect_proj_shadow __retVal, sampler, coord;
+}
+
+
+
+//
+// 8.9 Noise Functions
+//
+// AUTHOR: Stefan Gustavson (stegu@itn.liu.se), Nov 26, 2005
+//
+
+float noise1(const float x)
+{
+   __asm float_noise1 __retVal, x;
+}
+
+
+float noise1(const vec2 x)
+{
+    __asm float_noise2 __retVal, x;
+}
+
+float noise1(const vec3 x)
+{
+    __asm float_noise3 __retVal, x;
+}
+
+float noise1(const vec4 x)
+{
+    __asm float_noise4 __retVal, x;
+}
+
+vec2 noise2(const float x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + 19.34);
+}
+
+vec2 noise2(const vec2 x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + vec2(19.34, 7.66));
+}
+
+vec2 noise2(const vec3 x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + vec3(19.34, 7.66, 3.23));
+}
+
+vec2 noise2(const vec4 x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + vec4(19.34, 7.66, 3.23, 2.77));
+}
+
+vec3 noise3(const float x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + 19.34);
+   __retVal.z = noise1(x + 5.47);
+}
+
+vec3 noise3(const vec2 x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + vec2(19.34, 7.66));
+   __retVal.z = noise1(x + vec2(5.47, 17.85));
+}
+
+vec3 noise3(const vec3 x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + vec3(19.34, 7.66, 3.23));
+   __retVal.z = noise1(x + vec3(5.47, 17.85, 11.04));
+}
+
+vec3 noise3(const vec4 x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + vec4(19.34, 7.66, 3.23, 2.77));
+   __retVal.z = noise1(x + vec4(5.47, 17.85, 11.04, 13.19));
+}
+
+vec4 noise4(const float x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + 19.34);
+   __retVal.z = noise1(x + 5.47);
+   __retVal.w = noise1(x + 23.54);
+}
+
+vec4 noise4(const vec2 x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + vec2 (19.34, 7.66));
+   __retVal.z = noise1(x + vec2 (5.47, 17.85));
+   __retVal.w = noise1(x + vec2 (23.54, 29.11));
+}
+
+vec4 noise4(const vec3 x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + vec3(19.34, 7.66, 3.23));
+   __retVal.z = noise1(x + vec3(5.47, 17.85, 11.04));
+   __retVal.w = noise1(x + vec3(23.54, 29.11, 31.91));
+}
+
+vec4 noise4(const vec4 x)
+{
+   __retVal.x = noise1(x);
+   __retVal.y = noise1(x + vec4(19.34, 7.66, 3.23, 2.77));
+   __retVal.z = noise1(x + vec4(5.47, 17.85, 11.04, 13.19));
+   __retVal.w = noise1(x + vec4(23.54, 29.11, 31.91, 37.48));
+}
diff --git a/mesalib/src/mesa/shader/slang/library/slang_common_builtin_gc.h b/mesalib/src/mesa/shader/slang/library/slang_common_builtin_gc.h
new file mode 100644
index 000000000..78a7b83ec
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_common_builtin_gc.h
@@ -0,0 +1,872 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */
+/* slang_common_builtin.gc */
+
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diff --git a/mesalib/src/mesa/shader/slang/library/slang_core.gc b/mesalib/src/mesa/shader/slang/library/slang_core.gc
new file mode 100644
index 000000000..0a0d15903
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_core.gc
@@ -0,0 +1,2619 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+//
+// This file defines nearly all constructors and operators for built-in data
+// types, using extended language syntax. In general, compiler treats
+// constructors and operators as ordinary functions with some exceptions.
+// For example, the language does not allow functions to be called in
+// constant expressions - here the exception is made to allow it.
+//
+// Each implementation provides its own version of this file. Each
+// implementation can define the required set of operators and constructors
+// in its own fashion.
+//
+// The extended language syntax is only present when compiling this file.
+// It is implicitly included at the very beginning of the compiled shader,
+// so no built-in functions can be used.
+//
+// To communicate with the implementation, a special extended "__asm" keyword
+// is used, followed by an instruction name (any valid identifier), a
+// destination variable identifier and a list of zero or more source
+// variable identifiers.
+//
+// A variable identifier is a variable name declared earlier in the code
+// (as a function parameter, local or global variable).
+//
+// An instruction name designates an instruction that must be exported
+// by the implementation.  Each instruction receives data from source
+// variable identifiers and returns data in the destination variable
+// identifier.
+//
+// It is up to the implementation how to define a particular operator
+// or constructor. If it is expected to being used rarely, it can be
+// defined in terms of other operators and constructors,
+// for example:
+//
+// ivec2 __operator + (const ivec2 x, const ivec2 y) {
+//    return ivec2 (x[0] + y[0], x[1] + y[1]);
+// }
+//
+// If a particular operator or constructor is expected to be used very
+// often or is an atomic operation (that is, an operation that cannot be
+// expressed in terms of other operations or would create a dependency
+// cycle) it must be defined using one or more __asm constructs.
+//
+// Each implementation must define constructors for all scalar types
+// (bool, float, int).  There are 9 scalar-to-scalar constructors
+// (including identity constructors). However, since the language
+// introduces special constructors (like matrix constructor with a single
+// scalar value), implementations must also implement these cases.
+// The compiler provides the following algorithm when resolving a constructor:
+// - try to find a constructor with a prototype matching ours,
+// - if no constructor is found and this is a scalar-to-scalar constructor,
+//   raise an error,
+// - if a constructor is found, execute it and return,
+// - count the size of the constructor parameter list - if it is less than
+//   the size of our constructor's type, raise an error,
+// - for each parameter in the list do a recursive constructor matching for
+//   appropriate scalar fields in the constructed variable,
+//
+// Each implementation must also define a set of operators that deal with
+// built-in data types.
+// There are four kinds of operators:
+// 1) Operators that are implemented only by the compiler: "()" (function
+//    call), "," (sequence) and "?:" (selection).
+// 2) Operators that are implemented by the compiler by expressing it in
+//    terms of other operators:
+//    - "." (field selection) - translated to subscript access,
+//    - "&&" (logical and) - translated to "<left_expr> ? <right_expr> :
+//      false",
+//    - "||" (logical or) - translated to "<left_expr> ? true : <right_expr>",
+// 3) Operators that can be defined by the implementation and if the required
+//    prototype is not found, standard behaviour is used:
+//    - "==", "!=", "=" (equality, assignment) - compare or assign
+//      matching fields one-by-one;
+//      note that at least operators for scalar data types must be defined
+//      by the implementation to get it work,
+// 4) All other operators not mentioned above. If no required prototype is
+//    found, an error is raised. An implementation must follow the language
+//    specification to provide all valid operator prototypes.
+//
+
+
+
+//// Basic, scalar constructors/casts
+
+int __constructor(const float f)
+{
+   __asm vec4_to_ivec4 __retVal, f;
+}
+
+int __constructor(const bool b)
+{
+   __retVal = b;
+}
+
+int __constructor(const int i)
+{
+   __retVal = i;
+}
+
+bool __constructor(const int i)
+{
+   __asm vec4_sne __retVal, i, 0.0;
+}
+
+bool __constructor(const float f)
+{
+   __asm vec4_sne __retVal, f, 0.0;
+}
+
+bool __constructor(const bool b)
+{
+   __retVal = b;
+}
+
+float __constructor(const int i)
+{
+    __asm ivec4_to_vec4 __retVal, i;
+}
+
+float __constructor(const bool b)
+{
+    __asm ivec4_to_vec4 __retVal, b;
+}
+
+float __constructor(const float f)
+{
+   __retVal = f;
+}
+
+
+//// vec2 constructors
+
+vec2 __constructor(const float x, const float y)
+{
+   __retVal.x = x;
+   __retVal.y = y;
+}
+
+vec2 __constructor(const float f)
+{
+   __asm vec4_move __retVal.xy, f;
+}
+
+vec2 __constructor(const int i)
+{
+   __asm ivec4_to_vec4 __retVal.xy, i;
+}
+
+vec2 __constructor(const bool b)
+{
+   __asm ivec4_to_vec4 __retVal.xy, b;
+}
+
+vec2 __constructor(const bvec2 b)
+{
+//   __retVal = b;
+   __asm ivec4_to_vec4 __retVal.xy, b;
+}
+
+vec2 __constructor(const vec3 v)
+{
+   __asm vec4_move __retVal.xy, v.xy;
+}
+
+vec2 __constructor(const vec4 v)
+{
+   __asm vec4_move __retVal.xy, v.xy;
+}
+
+
+//// vec3 constructors
+
+vec3 __constructor(const float x, const float y, const float z)
+{
+   __retVal.x = x;
+   __retVal.y = y;
+   __retVal.z = z;
+}
+
+vec3 __constructor(const float f)
+{
+   // Note: this could be "__retVal.xyz = f" but that's an illegal assignment
+   __asm vec4_move __retVal.xyz, f;
+}
+
+vec3 __constructor(const int i)
+{
+   __asm ivec4_to_vec4 __retVal.xyz, i;
+}
+
+vec3 __constructor(const bool b)
+{
+   __asm ivec4_to_vec4 __retVal.xyz, b;
+}
+
+vec3 __constructor(const bvec3 b)
+{
+   __asm ivec4_to_vec4 __retVal.xyz, b;
+}
+
+vec3 __constructor(const vec4 v)
+{
+   __asm vec4_move __retVal.xyz, v;
+}
+
+
+//// vec4 constructors
+
+vec4 __constructor(const float x, const float y, const float z, const float w)
+{
+   __retVal.x = x;
+   __retVal.y = y;
+   __retVal.z = z;
+   __retVal.w = w;
+}
+
+vec4 __constructor(const float f)
+{
+   // Note: this could be "__retVal = f" but that's an illegal assignment
+   __asm vec4_move __retVal, f;
+}
+
+vec4 __constructor(const int i)
+{
+   __asm ivec4_to_vec4 __retVal, i;
+}
+
+vec4 __constructor(const bool b)
+{
+   __asm ivec4_to_vec4 __retVal, b;
+}
+
+vec4 __constructor(const bvec4 b)
+{
+   __asm ivec4_to_vec4 __retVal, b;
+}
+
+vec4 __constructor(const ivec4 i)
+{
+   __asm ivec4_to_vec4 __retVal, i;
+}
+
+vec4 __constructor(const vec3 v3, const float f)
+{
+   // XXX this constructor shouldn't be needed anymore
+   __retVal.xyz = v3;
+   __retVal.w = f;
+}
+
+vec4 __constructor(const vec2 v2, const float f1, const float f2)
+{
+   // XXX this constructor shouldn't be needed anymore
+   __retVal.xy = v2;
+   __retVal.z = f1;
+   __retVal.w = f2;
+}
+
+
+//// ivec2 constructors
+
+ivec2 __constructor(const int i, const int j)
+{
+   __retVal.x = i;
+   __retVal.y = j;
+}
+
+ivec2 __constructor(const int i)
+{
+   __asm vec4_move __retVal.xy, i;
+}
+
+ivec2 __constructor(const float f)
+{
+   __asm vec4_to_ivec4 __retVal.xy, f;
+}
+
+ivec2 __constructor(const bool b)
+{
+   __asm vec4_to_ivec4 __retVal.xy, b;
+}
+
+
+//// ivec3 constructors
+
+ivec3 __constructor(const int i, const int j, const int k)
+{
+   __retVal.x = i;
+   __retVal.y = j;
+   __retVal.z = k;
+}
+
+ivec3 __constructor(const int i)
+{
+   __asm vec4_move __retVal.xyz, i;
+}
+
+ivec3 __constructor(const float f)
+{
+   __asm vec4_to_ivec4 __retVal.xyz, f;
+}
+
+ivec3 __constructor(const bool b)
+{
+   __asm vec4_move __retVal.xyz, b;
+}
+
+
+//// ivec4 constructors
+
+ivec4 __constructor(const int x, const int y, const int z, const int w)
+{
+   __retVal.x = x;
+   __retVal.y = y;
+   __retVal.z = z;
+   __retVal.w = w;
+}
+
+ivec4 __constructor(const int i)
+{
+   __asm vec4_move __retVal, i;
+}
+
+ivec4 __constructor(const float f)
+{
+   __asm vec4_to_ivec4 __retVal, f;
+}
+
+ivec4 __constructor(const bool b)
+{
+   __asm vec4_to_ivec4 __retVal, b;
+}
+
+
+//// bvec2 constructors
+
+bvec2 __constructor(const bool b1, const bool b2)
+{
+   __retVal.x = b1;
+   __retVal.y = b2;
+}
+
+bvec2 __constructor(const int i1, const int i2)
+{
+   __asm vec4_sne __retVal.x, i1, 0.0;
+   __asm vec4_sne __retVal.y, i2, 0.0;
+}
+
+
+bvec2 __constructor(const bool b)
+{
+   __asm vec4_move __retVal.xy, b;
+}
+
+bvec2 __constructor(const float f)
+{
+   __asm vec4_sne __retVal.xy, f, 0.0;
+}
+
+bvec2 __constructor(const int i)
+{
+   __asm vec4_sne __retVal.xy, i, 0.0;
+}
+
+bvec2 __constructor(const vec2 v)
+{
+   __asm vec4_sne __retVal.xy, v, 0.0;
+}
+
+bvec2 __constructor(const ivec2 v)
+{
+   __asm vec4_sne __retVal.xy, v, 0.0;
+}
+
+
+
+//// bvec3 constructors
+
+bvec3 __constructor(const bool b1, const bool b2, const bool b3)
+{
+   __retVal.x = b1;
+   __retVal.y = b2;
+   __retVal.z = b3;
+}
+
+bvec3 __constructor(const float f1, const float f2, const float f3)
+{
+   __asm vec4_sne __retVal.x, f1, 0.0;
+   __asm vec4_sne __retVal.y, f2, 0.0;
+   __asm vec4_sne __retVal.z, f3, 0.0;
+}
+
+bvec3 __constructor(const bool b)
+{
+   __asm vec4_move __retVal.xyz, b;
+}
+
+bvec3 __constructor(const float f)
+{
+   __asm vec4_sne __retVal.xyz, f, 0.0;
+}
+
+bvec3 __constructor(const int i)
+{
+   __asm vec4_sne __retVal.xyz, i, 0.0;
+}
+
+bvec3 __constructor(const vec3 v)
+{
+   __asm vec4_sne __retVal.xyz, v, 0.0;
+}
+
+bvec3 __constructor(const ivec3 v)
+{
+   __asm vec4_sne __retVal.xyz, v, 0.0;
+}
+
+
+
+//// bvec4 constructors
+
+bvec4 __constructor(const bool b1, const bool b2, const bool b3, const bool b4)
+{
+   __retVal.x = b1;
+   __retVal.y = b2;
+   __retVal.z = b3;
+   __retVal.w = b4;
+}
+
+bvec4 __constructor(const float f1, const float f2, const float f3, const float f4)
+{
+   const float zero = 0.0;
+   __asm vec4_sne __retVal.x, f1, zero;   
+   __asm vec4_sne __retVal.y, f2, zero;   
+   __asm vec4_sne __retVal.z, f3, zero;   
+   __asm vec4_sne __retVal.w, f4, zero;   
+}
+
+bvec4 __constructor(const bool b)
+{
+   __asm vec4_move __retVal.xyzw, b;
+}
+
+bvec4 __constructor(const float f)
+{
+   __asm vec4_sne __retVal.xyzw, f, 0.0;
+}
+
+bvec4 __constructor(const int i)
+{
+   __asm vec4_sne __retVal.xyzw, i, 0.0;
+}
+
+bvec4 __constructor(const vec4 v)
+{
+   __asm vec4_sne __retVal.xyzw, v, 0.0;
+}
+
+bvec4 __constructor(const ivec4 v)
+{
+   __asm vec4_sne __retVal.xyzw, v, 0.0;
+}
+
+
+
+//// mat2 constructors
+
+mat2 __constructor(const float m00, const float m10,
+                   const float m01, const float m11)
+{
+   __retVal[0].x = m00;
+   __retVal[0].y = m10;
+   __retVal[1].x = m01;
+   __retVal[1].y = m11;
+}
+
+mat2 __constructor(const float f)
+{
+   __retVal[0].x = f;
+   __retVal[0].y = 0.0;
+   __retVal[1].x = 0.0;
+   __retVal[1].y = f;
+}
+
+mat2 __constructor(const int i)
+{
+   return mat2(float(i));
+}
+
+mat2 __constructor(const bool b)
+{
+   return mat2(float(b));
+}
+
+mat2 __constructor(const vec2 c0, const vec2 c1)
+{
+   __retVal[0] = c0;
+   __retVal[1] = c1;
+}
+
+
+//// mat3 constructors
+
+mat3 __constructor(const float m00, const float m10, const float m20,
+                   const float m01, const float m11, const float m21,
+                   const float m02, const float m12, const float m22)
+{
+   __retVal[0].x = m00;
+   __retVal[0].y = m10;
+   __retVal[0].z = m20;
+   __retVal[1].x = m01;
+   __retVal[1].y = m11;
+   __retVal[1].z = m21;
+   __retVal[2].x = m02;
+   __retVal[2].y = m12;
+   __retVal[2].z = m22;
+}
+
+mat3 __constructor(const float f)
+{
+   vec2 v = vec2(f, 0.0);
+   __retVal[0] = v.xyy;
+   __retVal[1] = v.yxy;
+   __retVal[2] = v.yyx;
+}
+
+mat3 __constructor(const int i)
+{
+   return mat3(float(i));
+}
+
+mat3 __constructor(const bool b)
+{
+   return mat3(float(b));
+}
+
+mat3 __constructor(const vec3 c0, const vec3 c1, const vec3 c2)
+{
+   __retVal[0] = c0;
+   __retVal[1] = c1;
+   __retVal[2] = c2;
+}
+
+
+//// mat4 constructors
+
+mat4 __constructor(const float m00, const float m10, const float m20, const float m30,
+                   const float m01, const float m11, const float m21, const float m31,
+                   const float m02, const float m12, const float m22, const float m32,
+                   const float m03, const float m13, const float m23, const float m33)
+{
+   __retVal[0].x = m00;
+   __retVal[0].y = m10;
+   __retVal[0].z = m20;
+   __retVal[0].w = m30;
+   __retVal[1].x = m01;
+   __retVal[1].y = m11;
+   __retVal[1].z = m21;
+   __retVal[1].w = m31;
+   __retVal[2].x = m02;
+   __retVal[2].y = m12;
+   __retVal[2].z = m22;
+   __retVal[2].w = m32;
+   __retVal[3].x = m03;
+   __retVal[3].y = m13;
+   __retVal[3].z = m23;
+   __retVal[3].w = m33;
+}
+
+
+mat4 __constructor(const float f)
+{
+   vec2 v = vec2(f, 0.0);
+   __retVal[0] = v.xyyy;
+   __retVal[1] = v.yxyy;
+   __retVal[2] = v.yyxy;
+   __retVal[3] = v.yyyx;
+}
+
+mat4 __constructor(const int i)
+{
+   return mat4(float(i));
+}
+
+mat4 __constructor(const bool b)
+{
+   return mat4(float(b));
+}
+
+mat4 __constructor(const vec4 c0, const vec4 c1, const vec4 c2, const vec4 c3)
+{
+   __retVal[0] = c0;
+   __retVal[1] = c1;
+   __retVal[2] = c2;
+   __retVal[3] = c3;
+}
+
+
+
+//// Basic int operators
+
+int __operator + (const int a, const int b)
+{
+   __asm vec4_add __retVal, a, b;
+}
+
+int __operator - (const int a, const int b)
+{
+   __asm vec4_subtract __retVal, a, b;
+}
+
+int __operator * (const int a, const int b)
+{
+   __asm vec4_multiply __retVal, a, b;
+}
+
+int __operator / (const int a, const int b)
+{
+   float bInv, x;
+   __asm float_rcp bInv, b;
+   __asm vec4_multiply x, a, bInv;
+   __asm vec4_to_ivec4 __retVal, x;
+}
+
+
+//// Basic ivec2 operators
+
+ivec2 __operator + (const ivec2 a, const ivec2 b)
+{
+   __asm vec4_add __retVal, a, b;
+}
+
+ivec2 __operator - (const ivec2 a, const ivec2 b)
+{
+   __asm vec4_subtract __retVal, a, b;
+}
+
+ivec2 __operator * (const ivec2 a, const ivec2 b)
+{
+   __asm vec4_multiply __retVal, a, b;
+}
+
+ivec2 __operator / (const ivec2 a, const ivec2 b)
+{
+   vec2 bInv, x;
+   __asm float_rcp bInv.x, b.x;
+   __asm float_rcp bInv.y, b.y;
+   __asm vec4_multiply x, a, bInv;
+   __asm vec4_to_ivec4 __retVal, x;
+}
+
+
+//// Basic ivec3 operators
+
+ivec3 __operator + (const ivec3 a, const ivec3 b)
+{
+   __asm vec4_add __retVal, a, b;
+}
+
+ivec3 __operator - (const ivec3 a, const ivec3 b)
+{
+   __asm vec4_subtract __retVal, a, b;
+}
+
+ivec3 __operator * (const ivec3 a, const ivec3 b)
+{
+   __asm vec4_multiply __retVal, a, b;
+}
+
+ivec3 __operator / (const ivec3 a, const ivec3 b)
+{
+   vec3 bInv, x;
+   __asm float_rcp bInv.x, b.x;
+   __asm float_rcp bInv.y, b.y;
+   __asm float_rcp bInv.z, b.z;
+   __asm vec4_multiply x, a, bInv;
+   __asm vec4_to_ivec4 __retVal, x;
+}
+
+
+//// Basic ivec4 operators
+
+ivec4 __operator + (const ivec4 a, const ivec4 b)
+{
+   __asm vec4_add __retVal, a, b;
+}
+
+ivec4 __operator - (const ivec4 a, const ivec4 b)
+{
+   __asm vec4_subtract __retVal, a, b;
+}
+
+ivec4 __operator * (const ivec4 a, const ivec4 b)
+{
+   __asm vec4_multiply __retVal, a, b;
+}
+
+ivec4 __operator / (const ivec4 a, const ivec4 b)
+{
+   vec4 bInv, x;
+   __asm float_rcp bInv.x, b.x;
+   __asm float_rcp bInv.y, b.y;
+   __asm float_rcp bInv.z, b.z;
+   __asm float_rcp bInv.w, b.w;
+   __asm vec4_multiply x, a, bInv;
+   __asm vec4_to_ivec4 __retVal, x;
+}
+
+
+//// Basic float operators
+
+float __operator + (const float a, const float b)
+{
+   __asm vec4_add __retVal, a, b;
+}
+
+float __operator - (const float a, const float b)
+{
+   __asm vec4_subtract __retVal, a, b;
+}
+
+float __operator * (const float a, const float b)
+{
+    __asm vec4_multiply __retVal, a, b;
+}
+
+float __operator / (const float a, const float b)
+{
+   float bInv;
+   __asm float_rcp bInv.x, b;
+   __asm vec4_multiply __retVal, a, bInv;
+}
+
+
+//// Basic vec2 operators
+
+vec2 __operator + (const vec2 v, const vec2 u)
+{
+   __asm vec4_add __retVal.xy, v, u;
+}
+
+vec2 __operator - (const vec2 v, const vec2 u)
+{
+    __asm vec4_subtract __retVal.xy, v, u;
+}
+
+vec2 __operator * (const vec2 v, const vec2 u)
+{
+    __asm vec4_multiply __retVal.xy, v, u;
+}
+
+vec2 __operator / (const vec2 v, const vec2 u)
+{
+   vec2 w; // = 1 / u
+   __asm float_rcp w.x, u.x;
+   __asm float_rcp w.y, u.y;
+   __asm vec4_multiply __retVal.xy, v, w;
+}
+
+
+//// Basic vec3 operators
+
+vec3 __operator + (const vec3 v, const vec3 u)
+{
+   __asm vec4_add __retVal.xyz, v, u;
+}
+
+vec3 __operator - (const vec3 v, const vec3 u)
+{
+    __asm vec4_subtract __retVal.xyz, v, u;
+}
+
+vec3 __operator * (const vec3 v, const vec3 u)
+{
+    __asm vec4_multiply __retVal.xyz, v, u;
+}
+
+vec3 __operator / (const vec3 v, const vec3 u)
+{
+   vec3 w; // = 1 / u
+   __asm float_rcp w.x, u.x;
+   __asm float_rcp w.y, u.y;
+   __asm float_rcp w.z, u.z;
+   __asm vec4_multiply __retVal.xyz, v, w;
+}
+
+
+//// Basic vec4 operators
+
+vec4 __operator + (const vec4 v, const vec4 u)
+{
+   __asm vec4_add __retVal, v, u;
+}
+
+vec4 __operator - (const vec4 v, const vec4 u)
+{
+    __asm vec4_subtract __retVal, v, u;
+}
+
+vec4 __operator * (const vec4 v, const vec4 u)
+{
+    __asm vec4_multiply __retVal, v, u;
+}
+
+vec4 __operator / (const vec4 v, const vec4 u)
+{
+   vec4 w; // = 1 / u
+   __asm float_rcp w.x, u.x;
+   __asm float_rcp w.y, u.y;
+   __asm float_rcp w.z, u.z;
+   __asm float_rcp w.w, u.w;
+   __asm vec4_multiply __retVal, v, w;
+}
+
+
+
+
+//// Basic vec2/float operators
+
+vec2 __operator + (const float a, const vec2 u)
+{
+   __asm vec4_add __retVal.xy, a, u.xy;
+}
+
+vec2 __operator + (const vec2 v, const float b)
+{
+   __asm vec4_add __retVal.xy, v.xy, b;
+}
+
+vec2 __operator - (const float a, const vec2 u)
+{
+   __asm vec4_subtract __retVal.xy, a, u.xy;
+}
+
+vec2 __operator - (const vec2 v, const float b)
+{
+   __asm vec4_subtract __retVal.xy, v.xy, b;
+}
+
+vec2 __operator * (const float a, const vec2 u)
+{
+   __asm vec4_multiply __retVal.xy, a, u.xy;
+}
+
+vec2 __operator * (const vec2 v, const float b)
+{
+   __asm vec4_multiply __retVal.xy, v.xy, b;
+}
+
+vec2 __operator / (const float a, const vec2 u)
+{
+   vec2 invU;
+   __asm float_rcp invU.x, u.x;
+   __asm float_rcp invU.y, u.y;
+   __asm vec4_multiply __retVal.xy, a, invU.xy;
+}
+
+vec2 __operator / (const vec2 v, const float b)
+{
+   float invB;
+   __asm float_rcp invB, b;
+   __asm vec4_multiply __retVal.xy, v.xy, invB;
+}
+
+
+//// Basic vec3/float operators
+
+vec3 __operator + (const float a, const vec3 u)
+{
+   __asm vec4_add __retVal.xyz, a, u.xyz;
+}
+
+vec3 __operator + (const vec3 v, const float b)
+{
+   __asm vec4_add __retVal.xyz, v.xyz, b;
+}
+
+vec3 __operator - (const float a, const vec3 u)
+{
+   __asm vec4_subtract __retVal.xyz, a, u.xyz;
+}
+
+vec3 __operator - (const vec3 v, const float b)
+{
+   __asm vec4_subtract __retVal.xyz, v.xyz, b;
+}
+
+vec3 __operator * (const float a, const vec3 u)
+{
+   __asm vec4_multiply __retVal.xyz, a, u.xyz;
+}
+
+vec3 __operator * (const vec3 v, const float b)
+{
+   __asm vec4_multiply __retVal.xyz, v.xyz, b;
+}
+
+vec3 __operator / (const float a, const vec3 u)
+{
+   vec3 invU;
+   __asm float_rcp invU.x, u.x;
+   __asm float_rcp invU.y, u.y;
+   __asm float_rcp invU.z, u.z;
+   __asm vec4_multiply __retVal.xyz, a, invU.xyz;
+}
+
+vec3 __operator / (const vec3 v, const float b)
+{
+   float invB;
+   __asm float_rcp invB, b;
+   __asm vec4_multiply __retVal.xyz, v.xyz, invB;
+}
+
+
+//// Basic vec4/float operators
+
+vec4 __operator + (const float a, const vec4 u)
+{
+   __asm vec4_add __retVal, a, u;
+}
+
+vec4 __operator + (const vec4 v, const float b)
+{
+   __asm vec4_add __retVal, v, b;
+}
+
+vec4 __operator - (const float a, const vec4 u)
+{
+   __asm vec4_subtract __retVal, a, u;
+}
+
+vec4 __operator - (const vec4 v, const float b)
+{
+   __asm vec4_subtract __retVal, v, b;
+}
+
+vec4 __operator * (const float a, const vec4 u)
+{
+   __asm vec4_multiply __retVal, a, u;
+}
+
+vec4 __operator * (const vec4 v, const float b)
+{
+   __asm vec4_multiply __retVal, v, b;
+}
+
+vec4 __operator / (const float a, const vec4 u)
+{
+   vec4 invU;
+   __asm float_rcp invU.x, u.x;
+   __asm float_rcp invU.y, u.y;
+   __asm float_rcp invU.z, u.z;
+   __asm float_rcp invU.w, u.w;
+   __asm vec4_multiply __retVal, a, invU;
+}
+
+vec4 __operator / (const vec4 v, const float b)
+{
+   float invB;
+   __asm float_rcp invB, b;
+   __asm vec4_multiply __retVal, v, invB;
+}
+
+
+
+//// Basic ivec2/int operators
+
+ivec2 __operator + (const int a, const ivec2 u)
+{
+   __retVal = ivec2(a) + u;
+}
+
+ivec2 __operator + (const ivec2 v, const int b)
+{
+   __retVal = v + ivec2(b);
+}
+
+ivec2 __operator - (const int a, const ivec2 u)
+{
+   __retVal = ivec2(a) - u;
+}
+
+ivec2 __operator - (const ivec2 v, const int b)
+{
+   __retVal = v - ivec2(b);
+}
+
+ivec2 __operator * (const int a, const ivec2 u)
+{
+   __retVal = ivec2(a) * u;
+}
+
+ivec2 __operator * (const ivec2 v, const int b)
+{
+   __retVal = v * ivec2(b);
+}
+
+ivec2 __operator / (const int a, const ivec2 u)
+{
+   __retVal = ivec2(a) / u;
+}
+
+ivec2 __operator / (const ivec2 v, const int b)
+{
+   __retVal = v / ivec2(b);
+}
+
+
+//// Basic ivec3/int operators
+
+ivec3 __operator + (const int a, const ivec3 u)
+{
+   __retVal = ivec3(a) + u;
+}
+
+ivec3 __operator + (const ivec3 v, const int b)
+{
+   __retVal = v + ivec3(b);
+}
+
+ivec3 __operator - (const int a, const ivec3 u)
+{
+   __retVal = ivec3(a) - u;
+}
+
+ivec3 __operator - (const ivec3 v, const int b)
+{
+   __retVal = v - ivec3(b);
+}
+
+ivec3 __operator * (const int a, const ivec3 u)
+{
+   __retVal = ivec3(a) * u;
+}
+
+ivec3 __operator * (const ivec3 v, const int b)
+{
+   __retVal = v * ivec3(b);
+}
+
+ivec3 __operator / (const int a, const ivec3 u)
+{
+   __retVal = ivec3(a) / u;
+}
+
+ivec3 __operator / (const ivec3 v, const int b)
+{
+   __retVal = v / ivec3(b);
+}
+
+
+//// Basic ivec4/int operators
+
+ivec4 __operator + (const int a, const ivec4 u)
+{
+   __retVal = ivec4(a) + u;
+}
+
+ivec4 __operator + (const ivec4 v, const int b)
+{
+   __retVal = v + ivec4(b);
+}
+
+ivec4 __operator - (const int a, const ivec4 u)
+{
+   __retVal = ivec4(a) - u;
+}
+
+ivec4 __operator - (const ivec4 v, const int b)
+{
+   __retVal = v - ivec4(b);
+}
+
+ivec4 __operator * (const int a, const ivec4 u)
+{
+   __retVal = ivec4(a) * u;
+}
+
+ivec4 __operator * (const ivec4 v, const int b)
+{
+   __retVal = v * ivec4(b);
+}
+
+ivec4 __operator / (const int a, const ivec4 u)
+{
+   __retVal = ivec4(a) / u;
+}
+
+ivec4 __operator / (const ivec4 v, const int b)
+{
+   __retVal = v / ivec4(b);
+}
+
+
+
+
+//// Unary negation operator
+
+int __operator - (const int a)
+{
+   __asm vec4_negate __retVal.x, a;
+}
+
+ivec2 __operator - (const ivec2 v)
+{
+   __asm vec4_negate __retVal, v;
+}
+
+ivec3 __operator - (const ivec3 v)
+{
+   __asm vec4_negate __retVal, v;
+}
+
+ivec4 __operator - (const ivec4 v)
+{
+   __asm vec4_negate __retVal, v;
+}
+
+float __operator - (const float a)
+{
+   __asm vec4_negate __retVal.x, a;
+}
+
+vec2 __operator - (const vec2 v)
+{
+   __asm vec4_negate __retVal.xy, v.xy;
+}
+
+vec3 __operator - (const vec3 v)
+{
+   __asm vec4_negate __retVal.xyz, v.xyz;
+}
+
+vec4 __operator - (const vec4 v)
+{
+   __asm vec4_negate __retVal, v;
+}
+
+mat2 __operator - (const mat2 m)
+{
+   __retVal[0] = -m[0];
+   __retVal[1] = -m[1];
+}
+
+mat3 __operator - (const mat3 m)
+{
+   __retVal[0] = -m[0];
+   __retVal[1] = -m[1];
+   __retVal[2] = -m[2];
+}
+
+mat4 __operator - (const mat4 m)
+{
+   __retVal[0] = -m[0];
+   __retVal[1] = -m[1];
+   __retVal[2] = -m[2];
+   __retVal[3] = -m[3];
+}
+
+
+
+//// dot product
+
+float dot(const float a, const float b)
+{
+   __retVal = a * b;
+}
+
+float dot(const vec2 a, const vec2 b)
+{
+   __retVal = a.x * b.x + a.y * b.y;
+}
+
+float dot(const vec3 a, const vec3 b)
+{
+    __asm vec3_dot __retVal, a, b;
+}
+
+float dot(const vec4 a, const vec4 b)
+{
+    __asm vec4_dot __retVal, a, b;
+}
+
+
+
+//// int assignment operators
+
+int __operator += (inout int a, const int b)
+{
+   a = a + b;
+   return a;
+}
+
+int __operator -= (inout int a, const int b)
+{
+   a = a - b;
+   return a;
+}
+
+int __operator *= (inout int a, const int b)
+{
+   a = a * b;
+   return a;
+}
+
+int __operator /= (inout int a, const int b)
+{
+   a = a / b;
+   return a;
+}
+
+
+//// ivec2 assignment operators
+
+ivec2 __operator += (inout ivec2 v, const ivec2 u)
+{
+   v = v + u;
+   return v;
+}
+
+ivec2 __operator -= (inout ivec2 v, const ivec2 u)
+{
+   v = v - u;
+   return v;
+}
+
+ivec2 __operator *= (inout ivec2 v, const ivec2 u)
+{
+   v = v * u;
+   return v;
+}
+
+ivec2 __operator /= (inout ivec2 v, const ivec2 u)
+{
+   v = v / u;
+   return v;
+}
+
+
+//// ivec3 assignment operators
+
+ivec3 __operator += (inout ivec3 v, const ivec3 u)
+{
+   v = v + u;
+   return v;
+}
+
+ivec3 __operator -= (inout ivec3 v, const ivec3 u)
+{
+   v = v - u;
+   return v;
+}
+
+ivec3 __operator *= (inout ivec3 v, const ivec3 u)
+{
+   v = v * u;
+   return v;
+}
+
+ivec3 __operator /= (inout ivec3 v, const ivec3 u)
+{
+   v = v / u;
+   return v;
+}
+
+
+//// ivec4 assignment operators
+
+ivec4 __operator += (inout ivec4 v, const ivec4 u)
+{
+   v = v + u;
+   return v;
+}
+
+ivec4 __operator -= (inout ivec4 v, const ivec4 u)
+{
+   v = v - u;
+   return v;
+}
+
+ivec4 __operator *= (inout ivec4 v, const ivec4 u)
+{
+   v = v * u;
+   return v;
+}
+
+ivec4 __operator /= (inout ivec4 v, const ivec4 u)
+{
+   v = v / u;
+   return v;
+}
+
+
+//// float assignment operators
+
+float __operator += (inout float a, const float b)
+{
+   a = a + b;
+   return a;
+}
+
+float __operator -= (inout float a, const float b)
+{
+   a = a - b;
+   return a;
+}
+
+float __operator *= (inout float a, const float b)
+{
+   a = a * b;
+   return a;
+}
+
+float __operator /= (inout float a, const float b)
+{
+   a = a / b;
+   return a;
+}
+
+
+//// vec2 assignment operators
+
+vec2 __operator += (inout vec2 v, const vec2 u)
+{
+   v = v + u;
+   return v;
+}
+
+vec2 __operator -= (inout vec2 v, const vec2 u)
+{
+   v = v - u;
+   return v;
+}
+
+vec2 __operator *= (inout vec2 v, const vec2 u)
+{
+   v = v * u;
+   return v;
+}
+
+vec2 __operator /= (inout vec2 v, const vec2 u)
+{
+   v = v / u;
+   return v;
+}
+
+
+//// vec3 assignment operators
+
+vec3 __operator += (inout vec3 v, const vec3 u)
+{
+   v = v + u;
+   return v;
+}
+
+vec3 __operator -= (inout vec3 v, const vec3 u)
+{
+   v = v - u;
+   return v;
+}
+
+vec3 __operator *= (inout vec3 v, const vec3 u)
+{
+   v = v * u;
+   return v;
+}
+
+vec3 __operator /= (inout vec3 v, const vec3 u)
+{
+   v = v / u;
+   return v;
+}
+
+
+//// vec4 assignment operators
+
+vec4 __operator += (inout vec4 v, const vec4 u)
+{
+   v = v + u;
+   return v;
+}
+
+vec4 __operator -= (inout vec4 v, const vec4 u)
+{
+   v = v - u;
+   return v;
+}
+
+vec4 __operator *= (inout vec4 v, const vec4 u)
+{
+   v = v * u;
+   return v;
+}
+
+vec4 __operator /= (inout vec4 v, const vec4 u)
+{
+   v = v / u;
+   return v;
+}
+
+
+
+//// ivec2/int assignment operators
+
+ivec2 __operator += (inout ivec2 v, const int a)
+{
+   v = v + ivec2(a);
+   return v;
+}
+
+ivec2 __operator -= (inout ivec2 v, const int a)
+{
+   v = v - ivec2(a);
+   return v;
+}
+
+ivec2 __operator *= (inout ivec2 v, const int a)
+{
+   v = v * ivec2(a);
+   return v;
+}
+
+ivec2 __operator /= (inout ivec2 v, const int a)
+{
+   v = v / ivec2(a);
+   return v;
+}
+
+
+//// ivec3/int assignment operators
+
+ivec3 __operator += (inout ivec3 v, const int a)
+{
+   v = v + ivec3(a);
+   return v;
+}
+
+ivec3 __operator -= (inout ivec3 v, const int a)
+{
+   v = v - ivec3(a);
+   return v;
+}
+
+ivec3 __operator *= (inout ivec3 v, const int a)
+{
+   v = v * ivec3(a);
+   return v;
+}
+
+ivec4 __operator /= (inout ivec3 v, const int a)
+{
+   v = v / ivec3(a);
+   return v;
+}
+
+
+//// ivec4/int assignment operators
+
+ivec4 __operator += (inout ivec4 v, const int a)
+{
+   v = v + ivec4(a);
+   return v;
+}
+
+ivec4 __operator -= (inout ivec4 v, const int a)
+{
+   v = v - ivec4(a);
+   return v;
+}
+
+ivec4 __operator *= (inout ivec4 v, const int a)
+{
+   v = v * ivec4(a);
+   return v;
+}
+
+ivec4 __operator /= (inout ivec4 v, const int a)
+{
+   v = v / ivec4(a);
+   return v;
+}
+
+
+
+//// vec2/float assignment operators
+
+vec2 __operator += (inout vec2 v, const float a)
+{
+   v = v + vec2(a);
+   return v;
+}
+
+vec2 __operator -= (inout vec2 v, const float a)
+{
+   v = v - vec2(a);
+   return v;
+}
+
+vec2 __operator *= (inout vec2 v, const float a)
+{
+   v = v * vec2(a);
+   return v;
+}
+
+vec2 __operator /= (inout vec2 v, const float a)
+{
+   v = v / vec2(a);
+   return v;
+}
+
+
+//// vec3/float assignment operators
+
+vec3 __operator += (inout vec3 v, const float a)
+{
+   v = v + vec3(a);
+   return v;
+}
+
+vec3 __operator -= (inout vec3 v, const float a)
+{
+   v = v - vec3(a);
+   return v;
+}
+
+vec3 __operator *= (inout vec3 v, const float a)
+{
+   v = v * vec3(a);
+   return v;
+}
+
+vec3 __operator /= (inout vec3 v, const float a)
+{
+   v = v / vec3(a);
+   return v;
+}
+
+
+//// vec4/float assignment operators
+
+vec4 __operator += (inout vec4 v, const float a)
+{
+   v = v + vec4(a);
+   return v;
+}
+
+vec4 __operator -= (inout vec4 v, const float a)
+{
+   v = v - vec4(a);
+   return v;
+}
+
+vec4 __operator *= (inout vec4 v, const float a)
+{
+   v = v * vec4(a);
+   return v;
+}
+
+vec4 __operator /= (inout vec4 v, const float a)
+{
+   v = v / vec4(a);
+   return v;
+}
+
+
+
+
+
+//// Basic mat2 operations
+
+mat2 __operator + (const mat2 m, const mat2 n)
+{
+   __retVal[0] = m[0] + n[0];
+   __retVal[1] = m[1] + n[1];
+}
+
+mat2 __operator - (const mat2 m, const mat2 n)
+{
+   __retVal[0] = m[0] - n[0];
+   __retVal[1] = m[1] - n[1];
+}
+
+mat2 __operator * (const mat2 m, const mat2 n)
+{
+   __retVal[0] = m[0] * n[0].xx + m[1] * n[0].yy;
+   __retVal[1] = m[0] * n[1].xx + m[1] * n[1].yy;
+}
+
+mat2 __operator / (const mat2 m, const mat2 n)
+{
+   __retVal[0] = m[0] / n[0];
+   __retVal[1] = m[1] / n[1];
+}
+
+
+//// Basic mat3 operations
+
+mat3 __operator + (const mat3 m, const mat3 n)
+{
+   __retVal[0] = m[0] + n[0];
+   __retVal[1] = m[1] + n[1];
+   __retVal[2] = m[2] + n[2];
+}
+
+mat3 __operator - (const mat3 m, const mat3 n)
+{
+   __retVal[0] = m[0] - n[0];
+   __retVal[1] = m[1] - n[1];
+   __retVal[2] = m[2] - n[2];
+}
+
+mat3 __operator * (const mat3 m, const mat3 n)
+{
+   __retVal[0] = m[0] * n[0].xxx + m[1] * n[0].yyy + m[2] * n[0].zzz;
+   __retVal[1] = m[0] * n[1].xxx + m[1] * n[1].yyy + m[2] * n[1].zzz;
+   __retVal[2] = m[0] * n[2].xxx + m[1] * n[2].yyy + m[2] * n[2].zzz;
+}
+
+mat3 __operator / (const mat3 m, const mat3 n)
+{
+    __retVal[0] = m[0] / n[0];
+    __retVal[1] = m[1] / n[1];
+    __retVal[2] = m[2] / n[2];
+}
+
+
+//// Basic mat4 operations
+
+mat4 __operator + (const mat4 m, const mat4 n)
+{
+   __retVal[0] = m[0] + n[0];
+   __retVal[1] = m[1] + n[1];
+   __retVal[2] = m[2] + n[2];
+   __retVal[3] = m[3] + n[3];
+}
+
+mat4 __operator - (const mat4 m, const mat4 n)
+{
+   __retVal[0] = m[0] - n[0];
+   __retVal[1] = m[1] - n[1];
+   __retVal[2] = m[2] - n[2];
+   __retVal[3] = m[3] - n[3];
+}
+
+mat4 __operator * (const mat4 m, const mat4 n)
+{
+   __retVal[0] = m[0] * n[0].xxxx + m[1] * n[0].yyyy + m[2] * n[0].zzzz + m[3] * n[0].wwww;
+   __retVal[1] = m[0] * n[1].xxxx + m[1] * n[1].yyyy + m[2] * n[1].zzzz + m[3] * n[1].wwww;
+   __retVal[2] = m[0] * n[2].xxxx + m[1] * n[2].yyyy + m[2] * n[2].zzzz + m[3] * n[2].wwww;
+   __retVal[3] = m[0] * n[3].xxxx + m[1] * n[3].yyyy + m[2] * n[3].zzzz + m[3] * n[3].wwww;
+}
+
+mat4 __operator / (const mat4 m, const mat4 n)
+{
+    __retVal[0] = m[0] / n[0];
+    __retVal[1] = m[1] / n[1];
+    __retVal[2] = m[2] / n[2];
+    __retVal[3] = m[3] / n[3];
+}
+
+
+//// mat2/float operations
+
+mat2 __operator + (const float a, const mat2 n)
+{
+   __retVal[0] = a + n[0];
+   __retVal[1] = a + n[1];
+}
+
+mat2 __operator + (const mat2 m, const float b)
+{
+   __retVal[0] = m[0] + b;
+   __retVal[1] = m[1] + b;
+}
+
+mat2 __operator - (const float a, const mat2 n)
+{
+   __retVal[0] = a - n[0];
+   __retVal[1] = a - n[1];
+}
+
+mat2 __operator - (const mat2 m, const float b)
+{
+   __retVal[0] = m[0] - b;
+   __retVal[1] = m[1] - b;
+}
+
+mat2 __operator * (const float a, const mat2 n)
+{
+   __retVal[0] = a * n[0];
+   __retVal[1] = a * n[1];
+}
+
+mat2 __operator * (const mat2 m, const float b)
+{
+   __retVal[0] = m[0] * b;
+   __retVal[1] = m[1] * b;
+}
+
+mat2 __operator / (const float a, const mat2 n)
+{
+   __retVal[0] = a / n[0];
+   __retVal[1] = a / n[1];
+}
+
+mat2 __operator / (const mat2 m, const float b)
+{
+   __retVal[0] = m[0] / b;
+   __retVal[1] = m[1] / b;
+}
+
+
+//// mat3/float operations
+
+mat3 __operator + (const float a, const mat3 n)
+{
+   __retVal[0] = a + n[0];
+   __retVal[1] = a + n[1];
+   __retVal[2] = a + n[2];
+}
+
+mat3 __operator + (const mat3 m, const float b)
+{
+   __retVal[0] = m[0] + b;
+   __retVal[1] = m[1] + b;
+   __retVal[2] = m[2] + b;
+}
+
+mat3 __operator - (const float a, const mat3 n)
+{
+   __retVal[0] = a - n[0];
+   __retVal[1] = a - n[1];
+   __retVal[2] = a - n[2];
+}
+
+mat3 __operator - (const mat3 m, const float b)
+{
+   __retVal[0] = m[0] - b;
+   __retVal[1] = m[1] - b;
+   __retVal[2] = m[2] - b;
+}
+
+mat3 __operator * (const float a, const mat3 n)
+{
+   __retVal[0] = a * n[0];
+   __retVal[1] = a * n[1];
+   __retVal[2] = a * n[2];
+}
+
+mat3 __operator * (const mat3 m, const float b)
+{
+   __retVal[0] = m[0] * b;
+   __retVal[1] = m[1] * b;
+   __retVal[2] = m[2] * b;
+}
+
+mat3 __operator / (const float a, const mat3 n)
+{
+   __retVal[0] = a / n[0];
+   __retVal[1] = a / n[1];
+   __retVal[2] = a / n[2];
+}
+
+mat3 __operator / (const mat3 m, const float b)
+{
+   __retVal[0] = m[0] / b;
+   __retVal[1] = m[1] / b;
+   __retVal[2] = m[2] / b;
+}
+
+
+//// mat4/float operations
+
+mat4 __operator + (const float a, const mat4 n)
+{
+   __retVal[0] = a + n[0];
+   __retVal[1] = a + n[1];
+   __retVal[2] = a + n[2];
+   __retVal[3] = a + n[3];
+}
+
+mat4 __operator + (const mat4 m, const float b)
+{
+   __retVal[0] = m[0] + b;
+   __retVal[1] = m[1] + b;
+   __retVal[2] = m[2] + b;
+   __retVal[3] = m[3] + b;
+}
+
+mat4 __operator - (const float a, const mat4 n)
+{
+   __retVal[0] = a - n[0];
+   __retVal[1] = a - n[1];
+   __retVal[2] = a - n[2];
+   __retVal[3] = a - n[3];
+}
+
+mat4 __operator - (const mat4 m, const float b)
+{
+   __retVal[0] = m[0] - b;
+   __retVal[1] = m[1] - b;
+   __retVal[2] = m[2] - b;
+   __retVal[3] = m[3] - b;
+}
+
+mat4 __operator * (const float a, const mat4 n)
+{
+   __retVal[0] = a * n[0];
+   __retVal[1] = a * n[1];
+   __retVal[2] = a * n[2];
+   __retVal[3] = a * n[3];
+}
+
+mat4 __operator * (const mat4 m, const float b)
+{
+   __retVal[0] = m[0] * b;
+   __retVal[1] = m[1] * b;
+   __retVal[2] = m[2] * b;
+   __retVal[3] = m[3] * b;
+}
+
+mat4 __operator / (const float a, const mat4 n)
+{
+   __retVal[0] = a / n[0];
+   __retVal[1] = a / n[1];
+   __retVal[2] = a / n[2];
+   __retVal[3] = a / n[3];
+}
+
+mat4 __operator / (const mat4 m, const float b)
+{
+   __retVal[0] = m[0] / b;
+   __retVal[1] = m[1] / b;
+   __retVal[2] = m[2] / b;
+   __retVal[3] = m[3] / b;
+}
+
+
+
+//// matrix / vector products
+
+vec2 __operator * (const mat2 m, const vec2 v)
+{
+   __retVal = m[0] * v.xx
+            + m[1] * v.yy;
+}
+
+vec2 __operator * (const vec2 v, const mat2 m)
+{
+   __retVal.x = dot(v, m[0]);
+   __retVal.y = dot(v, m[1]);
+}
+
+vec3 __operator * (const mat3 m, const vec3 v)
+{
+   __retVal = m[0] * v.xxx
+            + m[1] * v.yyy
+            + m[2] * v.zzz;
+}
+
+vec3 __operator * (const vec3 v, const mat3 m)
+{
+   __retVal.x = dot(v, m[0]);
+   __retVal.y = dot(v, m[1]);
+   __retVal.z = dot(v, m[2]);
+}
+
+vec4 __operator * (const mat4 m, const vec4 v)
+{
+   __retVal = m[0] * v.xxxx
+            + m[1] * v.yyyy
+            + m[2] * v.zzzz
+            + m[3] * v.wwww;
+}
+
+vec4 __operator * (const vec4 v, const mat4 m)
+{
+   __retVal.x = dot(v, m[0]);
+   __retVal.y = dot(v, m[1]);
+   __retVal.z = dot(v, m[2]);
+   __retVal.w = dot(v, m[3]);
+}
+
+
+
+//// mat2 assignment operators
+
+mat2 __operator += (inout mat2 m, const mat2 n)
+{
+   m[0] = m[0] + n[0];
+   m[1] = m[1] + n[1];
+   return m;
+}
+
+mat2 __operator -= (inout mat2 m, const mat2 n)
+{
+   m[0] = m[0] - n[0];
+   m[1] = m[1] - n[1];
+   return m;
+}
+
+mat2 __operator *= (inout mat2 m, const mat2 n)
+{
+   m = m * n;
+   return m;
+}
+
+mat2 __operator /= (inout mat2 m, const mat2 n)
+{
+   m[0] = m[0] / n[0];
+   m[1] = m[1] / n[1];
+   return m;
+}
+
+
+//// mat3 assignment operators
+
+mat3 __operator += (inout mat3 m, const mat3 n)
+{
+   m[0] = m[0] + n[0];
+   m[1] = m[1] + n[1];
+   m[2] = m[2] + n[2];
+   return m;
+}
+
+mat3 __operator -= (inout mat3 m, const mat3 n)
+{
+   m[0] = m[0] - n[0];
+   m[1] = m[1] - n[1];
+   m[2] = m[2] - n[2];
+   return m;
+}
+
+mat3 __operator *= (inout mat3 m, const mat3 n)
+{
+   m = m * n;
+   return m;
+}
+
+mat3 __operator /= (inout mat3 m, const mat3 n)
+{
+   m[0] = m[0] / n[0];
+   m[1] = m[1] / n[1];
+   m[2] = m[2] / n[2];
+   return m;
+}
+
+
+// mat4 assignment operators
+
+mat4 __operator += (inout mat4 m, const mat4 n)
+{
+   m[0] = m[0] + n[0];
+   m[1] = m[1] + n[1];
+   m[2] = m[2] + n[2];
+   m[3] = m[3] + n[3];
+   return m;
+}
+
+mat4 __operator -= (inout mat4 m, const mat4 n)
+{
+   m[0] = m[0] - n[0];
+   m[1] = m[1] - n[1];
+   m[2] = m[2] - n[2];
+   m[3] = m[3] - n[3];
+   return m;
+}
+
+mat4 __operator *= (inout mat4 m, const mat4 n)
+{
+   m = m * n;
+   return m;
+}
+
+mat4 __operator /= (inout mat4 m, const mat4 n)
+{
+   m[0] = m[0] / n[0];
+   m[1] = m[1] / n[1];
+   m[2] = m[2] / n[2];
+   m[3] = m[3] / n[3];
+   return m;
+}
+
+
+//// mat2/float assignment operators
+
+mat2 __operator += (inout mat2 m, const float a)
+{
+   vec2 v = vec2(a);
+   m[0] = m[0] + v;
+   m[1] = m[1] + v;
+   return m;
+}
+
+mat2 __operator -= (inout mat2 m, const float a)
+{
+   vec2 v = vec2(a);
+   m[0] = m[0] - v;
+   m[1] = m[1] - v;
+   return m;
+}
+
+mat2 __operator *= (inout mat2 m, const float a)
+{
+   vec2 v = vec2(a);
+   m[0] = m[0] * v;
+   m[1] = m[1] * v;
+   return m;
+}
+
+mat2 __operator /= (inout mat2 m, const float a)
+{
+   vec2 v = vec2(1.0 / a);
+   m[0] = m[0] * v;
+   m[1] = m[1] * v;
+   return m;
+}
+
+
+//// mat3/float assignment operators
+
+mat3 __operator += (inout mat3 m, const float a)
+{
+   vec3 v = vec3(a);
+   m[0] = m[0] + v;
+   m[1] = m[1] + v;
+   m[2] = m[2] + v;
+   return m;
+}
+
+mat3 __operator -= (inout mat3 m, const float a)
+{
+   vec3 v = vec3(a);
+   m[0] = m[0] - v;
+   m[1] = m[1] - v;
+   m[2] = m[2] - v;
+   return m;
+}
+
+mat3 __operator *= (inout mat3 m, const float a)
+{
+   vec3 v = vec3(a);
+   m[0] = m[0] * v;
+   m[1] = m[1] * v;
+   m[2] = m[2] * v;
+   return m;
+}
+
+mat3 __operator /= (inout mat3 m, const float a)
+{
+   vec3 v = vec3(1.0 / a);
+   m[0] = m[0] * v;
+   m[1] = m[1] * v;
+   m[2] = m[2] * v;
+   return m;
+}
+
+
+//// mat4/float assignment operators
+
+mat4 __operator += (inout mat4 m, const float a)
+{
+   vec4 v = vec4(a);
+   m[0] = m[0] + v;
+   m[1] = m[1] + v;
+   m[2] = m[2] + v;
+   m[3] = m[3] + v;
+   return m;
+}
+
+mat4 __operator -= (inout mat4 m, const float a)
+{
+   vec4 v = vec4(a);
+   m[0] = m[0] - v;
+   m[1] = m[1] - v;
+   m[2] = m[2] - v;
+   m[3] = m[3] - v;
+   return m;
+}
+
+mat4 __operator *= (inout mat4 m, const float a)
+{
+   vec4 v = vec4(a);
+   m[0] = m[0] * v;
+   m[1] = m[1] * v;
+   m[2] = m[2] * v;
+   m[3] = m[3] * v;
+   return m;
+}
+
+mat4 __operator /= (inout mat4 m, const float a)
+{
+   vec4 v = vec4(1.0 / a);
+   m[0] = m[0] * v;
+   m[1] = m[1] * v;
+   m[2] = m[2] * v;
+   m[3] = m[3] * v;
+   return m;
+}
+
+
+
+//// vec/mat assignment operators
+
+vec2 __operator *= (inout vec2 v, const mat2 m)
+{
+   v = v * m;
+   return v;
+}
+
+vec3 __operator *= (inout vec3 v, const mat3 m)
+{
+   v = v * m;
+   return v;
+}
+
+vec4 __operator *= (inout vec4 v, const mat4 m)
+{
+   v = v * m;
+   return v;
+}
+
+
+
+//// pre-decrement operators
+
+int __operator --(inout int a)
+{
+    a = a - 1;
+   __retVal = a;
+}
+
+ivec2 __operator --(inout ivec2 v)
+{
+   v = v - ivec2(1);
+   __retVal = v;
+}
+
+ivec3 __operator --(inout ivec3 v)
+{
+   v = v - ivec3(1);
+   __retVal = v;
+}
+
+ivec4 __operator --(inout ivec4 v)
+{
+   v = v - ivec4(1);
+   __retVal = v;
+}
+
+
+float __operator --(inout float a)
+{
+   a = a - 1.0;
+   __retVal = a;
+}
+
+vec2 __operator --(inout vec2 v)
+{
+   v = v - vec2(1.0);
+   __retVal = v;
+}
+
+vec3 __operator --(inout vec3 v)
+{
+   v = v - vec3(1.0);
+   __retVal = v;
+}
+
+vec4 __operator --(inout vec4 v)
+{
+   v = v - vec4(1.0);
+   __retVal = v;
+}
+
+
+mat2 __operator --(inout mat2 m)
+{
+   m[0] = m[0] - vec2(1.0);
+   m[1] = m[1] - vec2(1.0);
+   __retVal = m;
+}
+
+mat3 __operator --(inout mat3 m)
+{
+   m[0] = m[0] - vec3(1.0);
+   m[1] = m[1] - vec3(1.0);
+   m[2] = m[2] - vec3(1.0);
+   __retVal = m;
+}
+
+mat4 __operator --(inout mat4 m)
+{
+   m[0] = m[0] - vec4(1.0);
+   m[1] = m[1] - vec4(1.0);
+   m[2] = m[2] - vec4(1.0);
+   m[3] = m[3] - vec4(1.0);
+   __retVal = m;
+}
+
+
+//// pre-increment operators
+
+int __operator ++(inout int a)
+{
+    a = a + 1;
+    __retVal = a;
+}
+
+ivec2 __operator ++(inout ivec2 v)
+{
+   v = v + ivec2(1);
+   __retVal = v;
+}
+
+ivec3 __operator ++(inout ivec3 v)
+{
+   v = v + ivec3(1);
+   __retVal = v;
+}
+
+ivec4 __operator ++(inout ivec4 v)
+{
+   v = v + ivec4(1);
+   __retVal = v;
+}
+
+
+float __operator ++(inout float a)
+{
+    a = a + 1.0;
+    __retVal = a;
+}
+
+vec2 __operator ++(inout vec2 v)
+{
+   v = v + vec2(1.0);
+   __retVal = v;
+}
+
+vec3 __operator ++(inout vec3 v)
+{
+   v = v + vec3(1.0);
+   __retVal = v;
+}
+
+vec4 __operator ++(inout vec4 v)
+{
+   v = v + vec4(1.0);
+   __retVal = v;
+}
+
+
+mat2 __operator ++(inout mat2 m)
+{
+   m[0] = m[0] + vec2(1.0);
+   m[1] = m[1] + vec2(1.0);
+   __retVal = m;
+}
+
+mat3 __operator ++(inout mat3 m)
+{
+   m[0] = m[0] + vec3(1.0);
+   m[1] = m[1] + vec3(1.0);
+   m[2] = m[2] + vec3(1.0);
+   __retVal = m;
+}
+
+mat4 __operator ++(inout mat4 m)
+{
+   m[0] = m[0] + vec4(1.0);
+   m[1] = m[1] + vec4(1.0);
+   m[2] = m[2] + vec4(1.0);
+   m[3] = m[3] + vec4(1.0);
+   __retVal = m;
+}
+
+
+
+//// post-decrement
+
+int __postDecr(inout int a)
+{
+   __retVal = a;
+   a = a - 1;
+}
+
+ivec2 __postDecr(inout ivec2 v)
+{
+   __retVal = v;
+   v = v - ivec2(1);
+}
+
+ivec3 __postDecr(inout ivec3 v)
+{
+   __retVal = v;
+   v = v - ivec3(1);
+}
+
+ivec4 __postDecr(inout ivec4 v)
+{
+   __retVal = v;
+   v = v - ivec4(1);
+}
+
+
+float __postDecr(inout float a)
+{
+   __retVal = a;
+   a = a - 1.0;
+}
+
+vec2 __postDecr(inout vec2 v)
+{
+   __retVal = v;
+   v = v - vec2(1.0);
+}
+
+vec3 __postDecr(inout vec3 v)
+{
+   __retVal = v;
+   v = v - vec3(1.0);
+}
+
+vec4 __postDecr(inout vec4 v)
+{
+   __retVal = v;
+   v = v - vec4(1.0);
+}
+
+
+mat2 __postDecr(inout mat2 m)
+{
+   __retVal = m;
+   m[0] = m[0] - vec2(1.0);
+   m[1] = m[1] - vec2(1.0);
+}
+
+mat3 __postDecr(inout mat3 m)
+{
+   __retVal = m;
+   m[0] = m[0] - vec3(1.0);
+   m[1] = m[1] - vec3(1.0);
+   m[2] = m[2] - vec3(1.0);
+}
+
+mat4 __postDecr(inout mat4 m)
+{
+   __retVal = m;
+   m[0] = m[0] - vec4(1.0);
+   m[1] = m[1] - vec4(1.0);
+   m[2] = m[2] - vec4(1.0);
+   m[3] = m[3] - vec4(1.0);
+}
+
+
+//// post-increment
+
+float __postIncr(inout float a)
+{
+   __retVal = a;
+   a = a + 1;
+}
+
+vec2 __postIncr(inout vec2 v)
+{
+   __retVal = v;
+   v = v + vec2(1.0);
+}
+
+vec3 __postIncr(inout vec3 v)
+{
+   __retVal = v;
+   v = v + vec3(1.0);
+}
+
+vec4 __postIncr(inout vec4 v)
+{
+   __retVal = v;
+   v = v + vec4(1.0);
+}
+
+
+int __postIncr(inout int a)
+{
+   __retVal = a;
+   a = a + 1;
+}
+
+ivec2 __postIncr(inout ivec2 v)
+{
+   __retVal = v;
+   v = v + ivec2(1);
+}
+
+ivec3 __postIncr(inout ivec3 v)
+{
+   __retVal = v;
+   v = v + ivec3(1);
+}
+
+ivec4 __postIncr(inout ivec4 v)
+{
+   __retVal = v;
+   v = v + ivec3(1);
+}
+
+
+mat2 __postIncr(inout mat2 m)
+{
+   mat2 n = m;
+   m[0] = m[0] + vec2(1.0);
+   m[1] = m[1] + vec2(1.0);
+   return n;
+}
+
+mat3 __postIncr(inout mat3 m)
+{
+   mat3 n = m;
+   m[0] = m[0] + vec3(1.0);
+   m[1] = m[1] + vec3(1.0);
+   m[2] = m[2] + vec3(1.0);
+   return n;
+}
+
+mat4 __postIncr(inout mat4 m)
+{
+   mat4 n = m;
+   m[0] = m[0] + vec4(1.0);
+   m[1] = m[1] + vec4(1.0);
+   m[2] = m[2] + vec4(1.0);
+   m[3] = m[3] + vec4(1.0);
+   return n;
+}
+
+
+
+//// inequality operators
+
+
+// XXX are the inequality operators for floats/ints really needed????
+bool __operator < (const float a, const float b)
+{
+   __asm vec4_sgt __retVal.x, b, a;
+}
+
+
+bool __operator < (const int a, const int b) {
+    return float (a) < float (b);
+}
+
+bool __operator > (const float a, const float b) {
+    bool c;
+    __asm float_less c, b, a;
+    return c;
+}
+
+bool __operator > (const int a, const int b) {
+    return float (a) > float (b);
+}
+
+bool __operator >= (const float a, const float b) {
+    bool g, e;
+    __asm float_less  g, b, a;
+    __asm float_equal e, a, b;
+    return g || e;
+}
+
+bool __operator >= (const int a, const int b) {
+    return float (a) >= float (b);
+}
+
+bool __operator <= (const float a, const float b) {
+    bool g, e;
+    __asm float_less  g, a, b;
+    __asm float_equal e, a, b;
+    return g || e;
+}
+
+bool __operator <= (const int a, const int b) {
+    return float (a) <= float (b);
+}
+
+
+
+//
+// MESA-specific extension functions.
+//
+
+void printMESA (const float f) {
+    __asm float_print f;
+}
+
+void printMESA (const int i) {
+    __asm int_print i;
+}
+
+void printMESA (const bool b) {
+    __asm bool_print b;
+}
+
+void printMESA (const vec2 v) {
+    printMESA (v.x);
+    printMESA (v.y);
+}
+
+void printMESA (const vec3 v) {
+    printMESA (v.x);
+    printMESA (v.y);
+    printMESA (v.z);
+}
+
+void printMESA (const vec4 v) {
+    printMESA (v.x);
+    printMESA (v.y);
+    printMESA (v.z);
+    printMESA (v.w);
+}
+
+void printMESA (const ivec2 v) {
+    printMESA (v.x);
+    printMESA (v.y);
+}
+
+void printMESA (const ivec3 v) {
+    printMESA (v.x);
+    printMESA (v.y);
+    printMESA (v.z);
+}
+
+void printMESA (const ivec4 v) {
+    printMESA (v.x);
+    printMESA (v.y);
+    printMESA (v.z);
+    printMESA (v.w);
+}
+
+void printMESA (const bvec2 v) {
+    printMESA (v.x);
+    printMESA (v.y);
+}
+
+void printMESA (const bvec3 v) {
+    printMESA (v.x);
+    printMESA (v.y);
+    printMESA (v.z);
+}
+
+void printMESA (const bvec4 v) {
+    printMESA (v.x);
+    printMESA (v.y);
+    printMESA (v.z);
+    printMESA (v.w);
+}
+
+void printMESA (const mat2 m) {
+    printMESA (m[0]);
+    printMESA (m[1]);
+}
+
+void printMESA (const mat3 m) {
+    printMESA (m[0]);
+    printMESA (m[1]);
+    printMESA (m[2]);
+}
+
+void printMESA (const mat4 m) {
+    printMESA (m[0]);
+    printMESA (m[1]);
+    printMESA (m[2]);
+    printMESA (m[3]);
+}
+
+void printMESA (const sampler1D e) {
+    __asm int_print e;
+}
+
+void printMESA (const sampler2D e) {
+    __asm int_print e;
+}
+
+void printMESA (const sampler3D e) {
+    __asm int_print e;
+}
+
+void printMESA (const samplerCube e) {
+    __asm int_print e;
+}
+
+void printMESA (const sampler1DShadow e) {
+    __asm int_print e;
+}
+
+void printMESA (const sampler2DShadow e) {
+    __asm int_print e;
+}
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_core_gc.h b/mesalib/src/mesa/shader/slang/library/slang_core_gc.h
new file mode 100644
index 000000000..b3d3e87cf
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_core_gc.h
@@ -0,0 +1,869 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */
+/* slang_core.gc */
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diff --git a/mesalib/src/mesa/shader/slang/library/slang_fragment_builtin.gc b/mesalib/src/mesa/shader/slang/library/slang_fragment_builtin.gc
new file mode 100644
index 000000000..2e063e641
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_fragment_builtin.gc
@@ -0,0 +1,235 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+//
+// From Shader Spec, ver. 1.10, rev. 59
+//
+
+__fixed_input vec4 gl_FragCoord;
+__fixed_input bool gl_FrontFacing;
+__fixed_output vec4 gl_FragColor;
+__fixed_output vec4 gl_FragData[gl_MaxDrawBuffers];
+__fixed_output float gl_FragDepth;
+
+varying vec4 gl_Color;
+varying vec4 gl_SecondaryColor;
+varying vec4 gl_TexCoord[gl_MaxTextureCoords];
+varying float gl_FogFragCoord;
+
+
+
+//// 8.7 Texture Lookup Functions (with bias)
+
+vec4 texture1D(const sampler1D sampler, const float coord, const float bias)
+{
+   vec4 coord4;
+   coord4.x = coord;
+   coord4.w = bias;
+   __asm vec4_tex_1d_bias __retVal, sampler, coord4;
+}
+
+vec4 texture1DProj(const sampler1D sampler, const vec2 coord, const float bias)
+{
+   // do projection here (there's no vec4_texbp1d instruction)
+   vec4 pcoord;
+   pcoord.x = coord.x / coord.y;
+   pcoord.w = bias;
+   __asm vec4_tex_1d_bias __retVal, sampler, pcoord;
+}
+
+vec4 texture1DProj(const sampler1D sampler, const vec4 coord, const float bias)
+{
+   // do projection here (there's no vec4_texbp1d instruction)
+   vec4 pcoord;
+   pcoord.x = coord.x / coord.z;
+   pcoord.w = bias;
+   __asm vec4_tex_1d_bias __retVal, sampler, pcoord;
+}
+
+
+
+
+vec4 texture2D(const sampler2D sampler, const vec2 coord, const float bias)
+{
+   vec4 coord4;
+   coord4.xy = coord.xy;
+   coord4.w = bias;
+   __asm vec4_tex_2d_bias __retVal, sampler, coord4;
+}
+
+vec4 texture2DProj(const sampler2D sampler, const vec3 coord, const float bias)
+{
+   // do projection here (there's no vec4_texbp2d instruction)
+   vec4 pcoord;
+   pcoord.xy = coord.xy / coord.z;
+   pcoord.w = bias;
+   __asm vec4_tex_2d_bias __retVal, sampler, pcoord;
+}
+
+vec4 texture2DProj(const sampler2D sampler, const vec4 coord, const float bias)
+{
+   // do projection here (there's no vec4_texbp2d instruction)
+   vec4 pcoord;
+   pcoord.xy = coord.xy / coord.w;
+   pcoord.w = bias;
+   __asm vec4_tex_2d_bias __retVal, sampler, pcoord;
+}
+
+
+
+
+vec4 texture3D(const sampler3D sampler, const vec3 coord, const float bias)
+{
+   vec4 coord4;
+   coord4.xyz = coord.xyz;
+   coord4.w = bias;
+   __asm vec4_tex_3d_bias __retVal, sampler, coord4;
+}
+
+vec4 texture3DProj(const sampler3D sampler, const vec4 coord, const float bias)
+{
+   // do projection here (there's no vec4_texbp3d instruction)
+   vec4 pcoord;
+   pcoord.xyz = coord.xyz / coord.w;
+   pcoord.w = bias;
+   __asm vec4_tex_3d_bias __retVal, sampler, pcoord;
+}
+
+
+
+
+vec4 textureCube(const samplerCube sampler, const vec3 coord, const float bias)
+{
+   vec4 coord4;
+   coord4.xyz = coord;
+   coord4.w = bias;
+   __asm vec4_tex_cube __retVal, sampler, coord4;
+}
+
+
+
+vec4 shadow1D(const sampler1DShadow sampler, const vec3 coord, const float bias)
+{
+   vec4 coord4;
+   coord4.xyz = coord;
+   coord4.w = bias;
+   __asm vec4_tex_1d_bias_shadow __retVal, sampler, coord4;
+}
+
+vec4 shadow1DProj(const sampler1DShadow sampler, const vec4 coord, const float bias)
+{
+   vec4 pcoord;
+   pcoord.x = coord.x / coord.w;
+   pcoord.z = coord.z;
+   pcoord.w = bias;
+   __asm vec4_tex_1d_bias_shadow __retVal, sampler, pcoord;
+}
+
+vec4 shadow2D(const sampler2DShadow sampler, const vec3 coord, const float bias)
+{
+   vec4 coord4;
+   coord4.xyz = coord;
+   coord4.w = bias;
+   __asm vec4_tex_2d_bias_shadow __retVal, sampler, coord4;
+}
+
+vec4 shadow2DProj(const sampler2DShadow sampler, const vec4 coord, const float bias)
+{
+   vec4 pcoord;
+   pcoord.xy = coord.xy / coord.w;
+   pcoord.z = coord.z;
+   pcoord.w = bias;
+   __asm vec4_tex_2d_bias_shadow __retVal, sampler, pcoord;
+}
+
+
+
+//
+// 8.8 Fragment Processing Functions
+//
+
+float dFdx(const float p)
+{
+   __asm vec4_ddx __retVal.x, p.xxxx;
+}
+
+vec2 dFdx(const vec2 p)
+{
+   __asm vec4_ddx __retVal.xy, p.xyyy;
+}
+
+vec3 dFdx(const vec3 p)
+{
+   __asm vec4_ddx __retVal.xyz, p.xyzz;
+}
+
+vec4 dFdx(const vec4 p)
+{
+   __asm vec4_ddx __retVal, p;
+}
+
+float dFdy(const float p)
+{
+   __asm vec4_ddy __retVal.x, p.xxxx;
+}
+
+vec2 dFdy(const vec2 p)
+{
+   __asm vec4_ddy __retVal.xy, p.xyyy;
+}
+
+vec3 dFdy(const vec3 p)
+{
+   __asm vec4_ddy __retVal.xyz, p.xyzz;
+}
+
+vec4 dFdy(const vec4 p)
+{
+   __asm vec4_ddy __retVal, p;
+}
+
+float fwidth (const float p)
+{
+   // XXX hand-write with __asm
+   return abs(dFdx(p)) + abs(dFdy(p));
+}
+
+vec2 fwidth(const vec2 p)
+{
+   // XXX hand-write with __asm
+   return abs(dFdx(p)) + abs(dFdy(p));
+}
+
+vec3 fwidth(const vec3 p)
+{
+   // XXX hand-write with __asm
+   return abs(dFdx(p)) + abs(dFdy(p));
+}
+
+vec4 fwidth(const vec4 p)
+{
+   // XXX hand-write with __asm
+   return abs(dFdx(p)) + abs(dFdy(p));
+}
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_fragment_builtin_gc.h b/mesalib/src/mesa/shader/slang/library/slang_fragment_builtin_gc.h
new file mode 100644
index 000000000..c5a1cce2a
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_fragment_builtin_gc.h
@@ -0,0 +1,110 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */
+/* slang_fragment_builtin.gc */
+
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+111,111,114,100,52,0,0,0,9,18,99,111,111,114,100,52,0,59,120,121,122,0,18,99,111,111,114,100,0,20,
+0,9,18,99,111,111,114,100,52,0,59,119,0,18,98,105,97,115,0,20,0,4,118,101,99,52,95,116,101,120,95,
+49,100,95,98,105,97,115,95,115,104,97,100,111,119,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,
+109,112,108,101,114,0,0,18,99,111,111,114,100,52,0,0,0,0,1,90,95,0,0,12,0,0,115,104,97,100,111,119,
+49,68,80,114,111,106,0,1,1,0,0,20,0,115,97,109,112,108,101,114,0,0,1,1,0,0,12,0,99,111,111,114,100,
+0,0,1,1,0,0,9,0,98,105,97,115,0,0,0,1,3,2,90,95,0,0,12,0,1,112,99,111,111,114,100,0,0,0,9,18,112,
+99,111,111,114,100,0,59,120,0,18,99,111,111,114,100,0,59,120,0,18,99,111,111,114,100,0,59,119,0,49,
+20,0,9,18,112,99,111,111,114,100,0,59,122,0,18,99,111,111,114,100,0,59,122,0,20,0,9,18,112,99,111,
+111,114,100,0,59,119,0,18,98,105,97,115,0,20,0,4,118,101,99,52,95,116,101,120,95,49,100,95,98,105,
+97,115,95,115,104,97,100,111,119,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,
+114,0,0,18,112,99,111,111,114,100,0,0,0,0,1,90,95,0,0,12,0,0,115,104,97,100,111,119,50,68,0,1,1,0,
+0,21,0,115,97,109,112,108,101,114,0,0,1,1,0,0,11,0,99,111,111,114,100,0,0,1,1,0,0,9,0,98,105,97,
+115,0,0,0,1,3,2,90,95,0,0,12,0,1,99,111,111,114,100,52,0,0,0,9,18,99,111,111,114,100,52,0,59,120,
+121,122,0,18,99,111,111,114,100,0,20,0,9,18,99,111,111,114,100,52,0,59,119,0,18,98,105,97,115,0,20,
+0,4,118,101,99,52,95,116,101,120,95,50,100,95,98,105,97,115,95,115,104,97,100,111,119,0,18,95,95,
+114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,52,0,0,0,0,1,90,
+95,0,0,12,0,0,115,104,97,100,111,119,50,68,80,114,111,106,0,1,1,0,0,21,0,115,97,109,112,108,101,
+114,0,0,1,1,0,0,12,0,99,111,111,114,100,0,0,1,1,0,0,9,0,98,105,97,115,0,0,0,1,3,2,90,95,0,0,12,0,1,
+112,99,111,111,114,100,0,0,0,9,18,112,99,111,111,114,100,0,59,120,121,0,18,99,111,111,114,100,0,59,
+120,121,0,18,99,111,111,114,100,0,59,119,0,49,20,0,9,18,112,99,111,111,114,100,0,59,122,0,18,99,
+111,111,114,100,0,59,122,0,20,0,9,18,112,99,111,111,114,100,0,59,119,0,18,98,105,97,115,0,20,0,4,
+118,101,99,52,95,116,101,120,95,50,100,95,98,105,97,115,95,115,104,97,100,111,119,0,18,95,95,114,
+101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,112,99,111,111,114,100,0,0,0,0,1,90,95,
+0,0,9,0,0,100,70,100,120,0,1,1,0,0,9,0,112,0,0,0,1,4,118,101,99,52,95,100,100,120,0,18,95,95,114,
+101,116,86,97,108,0,59,120,0,0,18,112,0,59,120,120,120,120,0,0,0,0,1,90,95,0,0,10,0,0,100,70,100,
+120,0,1,1,0,0,10,0,112,0,0,0,1,4,118,101,99,52,95,100,100,120,0,18,95,95,114,101,116,86,97,108,0,
+59,120,121,0,0,18,112,0,59,120,121,121,121,0,0,0,0,1,90,95,0,0,11,0,0,100,70,100,120,0,1,1,0,0,11,
+0,112,0,0,0,1,4,118,101,99,52,95,100,100,120,0,18,95,95,114,101,116,86,97,108,0,59,120,121,122,0,0,
+18,112,0,59,120,121,122,122,0,0,0,0,1,90,95,0,0,12,0,0,100,70,100,120,0,1,1,0,0,12,0,112,0,0,0,1,4,
+118,101,99,52,95,100,100,120,0,18,95,95,114,101,116,86,97,108,0,0,18,112,0,0,0,0,1,90,95,0,0,9,0,0,
+100,70,100,121,0,1,1,0,0,9,0,112,0,0,0,1,4,118,101,99,52,95,100,100,121,0,18,95,95,114,101,116,86,
+97,108,0,59,120,0,0,18,112,0,59,120,120,120,120,0,0,0,0,1,90,95,0,0,10,0,0,100,70,100,121,0,1,1,0,
+0,10,0,112,0,0,0,1,4,118,101,99,52,95,100,100,121,0,18,95,95,114,101,116,86,97,108,0,59,120,121,0,
+0,18,112,0,59,120,121,121,121,0,0,0,0,1,90,95,0,0,11,0,0,100,70,100,121,0,1,1,0,0,11,0,112,0,0,0,1,
+4,118,101,99,52,95,100,100,121,0,18,95,95,114,101,116,86,97,108,0,59,120,121,122,0,0,18,112,0,59,
+120,121,122,122,0,0,0,0,1,90,95,0,0,12,0,0,100,70,100,121,0,1,1,0,0,12,0,112,0,0,0,1,4,118,101,99,
+52,95,100,100,121,0,18,95,95,114,101,116,86,97,108,0,0,18,112,0,0,0,0,1,90,95,0,0,9,0,0,102,119,
+105,100,116,104,0,1,1,0,0,9,0,112,0,0,0,1,8,58,97,98,115,0,0,58,100,70,100,120,0,0,18,112,0,0,0,0,
+0,58,97,98,115,0,0,58,100,70,100,121,0,0,18,112,0,0,0,0,0,46,0,0,1,90,95,0,0,10,0,0,102,119,105,
+100,116,104,0,1,1,0,0,10,0,112,0,0,0,1,8,58,97,98,115,0,0,58,100,70,100,120,0,0,18,112,0,0,0,0,0,
+58,97,98,115,0,0,58,100,70,100,121,0,0,18,112,0,0,0,0,0,46,0,0,1,90,95,0,0,11,0,0,102,119,105,100,
+116,104,0,1,1,0,0,11,0,112,0,0,0,1,8,58,97,98,115,0,0,58,100,70,100,120,0,0,18,112,0,0,0,0,0,58,97,
+98,115,0,0,58,100,70,100,121,0,0,18,112,0,0,0,0,0,46,0,0,1,90,95,0,0,12,0,0,102,119,105,100,116,
+104,0,1,1,0,0,12,0,112,0,0,0,1,8,58,97,98,115,0,0,58,100,70,100,120,0,0,18,112,0,0,0,0,0,58,97,98,
+115,0,0,58,100,70,100,121,0,0,18,112,0,0,0,0,0,46,0,0,0
diff --git a/mesalib/src/mesa/shader/slang/library/slang_pp_directives.syn b/mesalib/src/mesa/shader/slang/library/slang_pp_directives.syn
new file mode 100644
index 000000000..b51d168cc
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_pp_directives.syn
@@ -0,0 +1,405 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.6
+ *
+ * Copyright (C) 2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_pp_directives.syn
+ * slang preprocessor directives parser
+ * \author Michal Krol
+ */
+
+.syntax source;
+
+/*
+ * This syntax script preprocesses a GLSL shader.
+ * It is assumed, that the #version directive has been parsed. Separate pass for parsing
+ * version gives better control on behavior depending on the version number given.
+ *
+ * The output is a source string with comments and directives removed. White spaces and comments
+ * are replaced with on or more spaces. All new-lines are preserved and converted to Linux format.
+ * Directives are escaped with a null character. The end of the source string is marked by
+ * two consecutive null characters. The consumer is responsible for executing the escaped
+ * directives, removing dead portions of code and expanding macros.
+ */
+
+.emtcode ESCAPE_TOKEN 0
+
+/*
+ * The TOKEN_* symbols follow the ESCAPE_TOKEN.
+ *
+ * NOTE:
+ * There is no TOKEN_IFDEF and neither is TOKEN_IFNDEF. They are handled with TOKEN_IF and
+ * operator defined.
+ * The "#ifdef SYMBOL" is replaced with "#if defined SYMBOL"
+ * The "#ifndef SYMBOL" is replaced with "#if !defined SYMBOL"
+ */
+.emtcode TOKEN_END       0
+.emtcode TOKEN_DEFINE    1
+.emtcode TOKEN_UNDEF     2
+.emtcode TOKEN_IF        3
+.emtcode TOKEN_ELSE      4
+.emtcode TOKEN_ELIF      5
+.emtcode TOKEN_ENDIF     6
+.emtcode TOKEN_ERROR     7
+.emtcode TOKEN_PRAGMA    8
+.emtcode TOKEN_EXTENSION 9
+.emtcode TOKEN_LINE      10
+
+/*
+ * The PARAM_* symbols follow the TOKEN_DEFINE.
+ */
+.emtcode PARAM_END       0
+.emtcode PARAM_PARAMETER 1
+
+/*
+ * The BEHAVIOR_* symbols follow the TOKEN_EXTENSION.
+ */
+.emtcode BEHAVIOR_REQUIRE 1
+.emtcode BEHAVIOR_ENABLE  2
+.emtcode BEHAVIOR_WARN    3
+.emtcode BEHAVIOR_DISABLE 4
+
+/*
+ * The PRAGMA_* symbols follow TOKEN_PRAGMA
+ */
+.emtcode PRAGMA_NO_PARAM 0
+.emtcode PRAGMA_PARAM    1
+
+source
+   optional_directive .and .loop source_element .and '\0' .emit ESCAPE_TOKEN .emit TOKEN_END;
+
+source_element
+   c_style_comment_block .or cpp_style_comment_block .or new_line_directive .or source_token;
+
+c_style_comment_block
+   '/' .and '*' .and c_style_comment_rest .and .true .emit ' ';
+
+c_style_comment_rest
+   .loop c_style_comment_body .and c_style_comment_end;
+
+c_style_comment_body
+   c_style_comment_char_nostar .or c_style_comment_char_star_noslashstar;
+
+c_style_comment_char_nostar
+   new_line .or '\x2B'-'\xFF' .or '\x01'-'\x29';
+
+c_style_comment_char_star_noslashstar
+   '*' .and c_style_comment_char_star_noslashstar_1;
+c_style_comment_char_star_noslashstar_1
+   c_style_comment_char_noslashstar .or c_style_comment_char_star_noslashstar;
+
+c_style_comment_char_noslashstar
+   new_line .or '\x30'-'\xFF' .or '\x01'-'\x29' .or '\x2B'-'\x2E';
+
+c_style_comment_end
+   '*' .and .loop c_style_comment_char_star .and '/';
+
+c_style_comment_char_star
+   '*';
+
+cpp_style_comment_block
+   '/' .and '/' .and cpp_style_comment_block_1;
+cpp_style_comment_block_1
+   cpp_style_comment_block_2 .or cpp_style_comment_block_3;
+cpp_style_comment_block_2
+   .loop cpp_style_comment_char .and new_line_directive;
+cpp_style_comment_block_3
+   .loop cpp_style_comment_char;
+
+cpp_style_comment_char
+   '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
+
+new_line_directive
+   new_line .and optional_directive;
+
+new_line
+   generic_new_line .emit '\n';
+
+generic_new_line
+   carriage_return_line_feed .or line_feed_carriage_return .or '\n' .or '\r';
+
+carriage_return_line_feed
+   '\r' .and '\n';
+
+line_feed_carriage_return
+   '\n' .and '\r';
+
+optional_directive
+   directive .emit ESCAPE_TOKEN .or .true;
+
+directive
+   dir_define .emit TOKEN_DEFINE .or
+   dir_undef .emit TOKEN_UNDEF .or
+   dir_if .emit TOKEN_IF .or
+   dir_ifdef .emit TOKEN_IF .emit 'd' .emit 'e' .emit 'f' .emit 'i' .emit 'n' .emit 'e' .emit 'd'
+             .emit ' ' .or
+   dir_ifndef .emit TOKEN_IF .emit '!' .emit 'd' .emit 'e' .emit 'f' .emit 'i' .emit 'n' .emit 'e'
+              .emit 'd' .emit ' ' .or
+   dir_else .emit TOKEN_ELSE .or
+   dir_elif .emit TOKEN_ELIF .or
+   dir_endif .emit TOKEN_ENDIF .or
+   dir_ext .emit TOKEN_EXTENSION .or
+   dir_pragma .emit TOKEN_PRAGMA .or
+   dir_line .emit TOKEN_LINE;
+
+dir_define
+   optional_space .and '#' .and optional_space .and "define" .and symbol .and opt_parameters .and
+   definition;
+
+dir_undef
+   optional_space .and '#' .and optional_space .and "undef" .and symbol;
+
+dir_if
+   optional_space .and '#' .and optional_space .and "if" .and expression;
+
+dir_ifdef
+   optional_space .and '#' .and optional_space .and "ifdef" .and symbol;
+
+dir_ifndef
+   optional_space .and '#' .and optional_space .and "ifndef" .and symbol;
+
+dir_else
+   optional_space .and '#' .and optional_space .and "else";
+
+dir_elif
+   optional_space .and '#' .and optional_space .and "elif" .and expression;
+
+dir_endif
+   optional_space .and '#' .and optional_space .and "endif";
+
+dir_ext
+   optional_space .and '#' .and optional_space .and "extension" .and space .and extension_name .and
+   optional_space .and ':' .and optional_space .and extension_behavior;
+
+dir_line
+   optional_space .and '#' .and optional_space .and "line" .and expression;
+
+dir_pragma
+   optional_space .and '#' .and optional_space .and "pragma" .and symbol .and opt_pragma_param;
+
+
+opt_pragma_param
+   pragma_param .or .true .emit PRAGMA_NO_PARAM;
+
+pragma_param
+   optional_space .and '(' .emit PRAGMA_PARAM .and optional_space .and symbol_no_space .and optional_space .and ')';
+
+symbol_no_space
+   symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\0';
+
+symbol
+   space .and symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\0';
+
+opt_parameters
+   parameters .or .true .emit PARAM_END;
+
+parameters
+   '(' .and parameters_1 .and optional_space .and ')' .emit PARAM_END;
+parameters_1
+   parameters_2 .or .true;
+parameters_2
+   parameter .emit PARAM_PARAMETER .and .loop parameters_3;
+parameters_3
+   optional_space .and ',' .and parameter .emit PARAM_PARAMETER;
+
+parameter
+   optional_space .and symbol_character .emit * .and .loop symbol_character2 .emit * .and
+   .true .emit '\0';
+
+definition
+   .loop definition_character .emit * .and .true .emit '\0';
+
+definition_character
+   '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
+
+expression
+   expression_element .and .loop expression_element .and .true .emit '\0';
+
+expression_element
+   expression_character .emit *;
+
+expression_character
+   '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
+
+extension_name
+   symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\0';
+
+extension_behavior
+   "require" .emit BEHAVIOR_REQUIRE .or
+   "enable" .emit BEHAVIOR_ENABLE .or
+   "warn" .emit BEHAVIOR_WARN .or
+   "disable" .emit BEHAVIOR_DISABLE;
+
+optional_space
+   .loop single_space;
+
+space
+   single_space .and .loop single_space;
+
+single_space
+   ' ' .or '\t';
+
+source_token
+   space .emit ' ' .or complex_token .or source_token_1;
+source_token_1
+   simple_token .emit ' ' .and .true .emit ' ';
+
+/*
+ * All possible tokens.
+ */
+
+complex_token
+   identifier .or number;
+
+simple_token
+   increment .or decrement .or lequal .or gequal .or equal .or nequal .or and .or xor .or or .or
+   addto .or subtractfrom .or multiplyto .or divideto .or other;
+
+identifier
+   identifier_char1 .emit * .and .loop identifier_char2 .emit *;
+identifier_char1
+   'a'-'z' .or 'A'-'Z' .or '_';
+identifier_char2
+   'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_';
+
+number
+   float .or integer;
+
+digit_oct
+   '0'-'7';
+
+digit_dec
+   '0'-'9';
+
+digit_hex
+   '0'-'9' .or 'A'-'F' .or 'a'-'f';
+
+float
+   float_1 .or float_2;
+float_1
+   float_fractional_constant .and float_optional_exponent_part;
+float_2
+   float_digit_sequence .and float_exponent_part;
+
+float_fractional_constant
+   float_fractional_constant_1 .or float_fractional_constant_2 .or float_fractional_constant_3;
+float_fractional_constant_1
+   float_digit_sequence .and '.' .emit '.' .and float_digit_sequence;
+float_fractional_constant_2
+   float_digit_sequence .and '.' .emit '.';
+float_fractional_constant_3
+   '.' .emit '.' .and float_digit_sequence;
+
+float_optional_exponent_part
+   float_exponent_part .or .true;
+
+float_digit_sequence
+   digit_dec .emit * .and .loop digit_dec .emit *;
+
+float_exponent_part
+   float_exponent_part_1 .or float_exponent_part_2;
+float_exponent_part_1
+   'e' .emit 'e' .and float_optional_sign .and float_digit_sequence;
+float_exponent_part_2
+   'E' .emit 'E' .and float_optional_sign .and float_digit_sequence;
+
+float_optional_sign
+   '+' .emit '+' .or '-' .emit '-' .or .true;
+
+integer
+   integer_hex .or integer_oct .or integer_dec;
+
+integer_hex
+   '0' .emit '0' .and integer_hex_1 .emit * .and digit_hex .emit * .and
+   .loop digit_hex .emit *;
+integer_hex_1
+   'x' .or 'X';
+
+integer_oct
+   '0' .emit '0' .and .loop digit_oct .emit *;
+
+integer_dec
+   digit_dec .emit * .and .loop digit_dec .emit *;
+
+increment
+   '+' .emit * .and '+' .emit *;
+
+decrement
+   '-' .emit * .and '-' .emit *;
+
+lequal
+   '<' .emit * .and '=' .emit *;
+
+gequal
+   '>' .emit * .and '=' .emit *;
+
+equal
+   '=' .emit * .and '=' .emit *;
+
+nequal
+   '!' .emit * .and '=' .emit *;
+
+and
+   '&' .emit * .and '&' .emit *;
+
+xor
+   '^' .emit * .and '^' .emit *;
+
+or
+   '|' .emit * .and '|' .emit *;
+
+addto
+   '+' .emit * .and '=' .emit *;
+
+subtractfrom
+   '-' .emit * .and '=' .emit *;
+
+multiplyto
+   '*' .emit * .and '=' .emit *;
+
+divideto
+   '/' .emit * .and '=' .emit *;
+
+/*
+ * All characters except '\0' and '#'.
+ */
+other
+   '\x24'-'\xFF' .emit * .or '\x01'-'\x22' .emit *;
+
+symbol_character
+   'A'-'Z' .or 'a'-'z' .or '_';
+
+symbol_character2
+   'A'-'Z' .or 'a'-'z' .or '0'-'9' .or '_';
+
+.string string_lexer;
+
+string_lexer
+   lex_first_identifier_character .and .loop lex_next_identifier_character;
+
+lex_first_identifier_character
+   'a'-'z' .or 'A'-'Z' .or '_';
+
+lex_next_identifier_character
+   'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_';
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_pp_directives_syn.h b/mesalib/src/mesa/shader/slang/library/slang_pp_directives_syn.h
new file mode 100644
index 000000000..430f8d821
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_pp_directives_syn.h
@@ -0,0 +1,250 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE .syn FILE */
+
+".syntax source;\n"
+".emtcode ESCAPE_TOKEN 0\n"
+".emtcode TOKEN_END 0\n"
+".emtcode TOKEN_DEFINE 1\n"
+".emtcode TOKEN_UNDEF 2\n"
+".emtcode TOKEN_IF 3\n"
+".emtcode TOKEN_ELSE 4\n"
+".emtcode TOKEN_ELIF 5\n"
+".emtcode TOKEN_ENDIF 6\n"
+".emtcode TOKEN_ERROR 7\n"
+".emtcode TOKEN_PRAGMA 8\n"
+".emtcode TOKEN_EXTENSION 9\n"
+".emtcode TOKEN_LINE 10\n"
+".emtcode PARAM_END 0\n"
+".emtcode PARAM_PARAMETER 1\n"
+".emtcode BEHAVIOR_REQUIRE 1\n"
+".emtcode BEHAVIOR_ENABLE 2\n"
+".emtcode BEHAVIOR_WARN 3\n"
+".emtcode BEHAVIOR_DISABLE 4\n"
+".emtcode PRAGMA_NO_PARAM 0\n"
+".emtcode PRAGMA_PARAM 1\n"
+"source\n"
+" optional_directive .and .loop source_element .and '\\0' .emit ESCAPE_TOKEN .emit TOKEN_END;\n"
+"source_element\n"
+" c_style_comment_block .or cpp_style_comment_block .or new_line_directive .or source_token;\n"
+"c_style_comment_block\n"
+" '/' .and '*' .and c_style_comment_rest .and .true .emit ' ';\n"
+"c_style_comment_rest\n"
+" .loop c_style_comment_body .and c_style_comment_end;\n"
+"c_style_comment_body\n"
+" c_style_comment_char_nostar .or c_style_comment_char_star_noslashstar;\n"
+"c_style_comment_char_nostar\n"
+" new_line .or '\\x2B'-'\\xFF' .or '\\x01'-'\\x29';\n"
+"c_style_comment_char_star_noslashstar\n"
+" '*' .and c_style_comment_char_star_noslashstar_1;\n"
+"c_style_comment_char_star_noslashstar_1\n"
+" c_style_comment_char_noslashstar .or c_style_comment_char_star_noslashstar;\n"
+"c_style_comment_char_noslashstar\n"
+" new_line .or '\\x30'-'\\xFF' .or '\\x01'-'\\x29' .or '\\x2B'-'\\x2E';\n"
+"c_style_comment_end\n"
+" '*' .and .loop c_style_comment_char_star .and '/';\n"
+"c_style_comment_char_star\n"
+" '*';\n"
+"cpp_style_comment_block\n"
+" '/' .and '/' .and cpp_style_comment_block_1;\n"
+"cpp_style_comment_block_1\n"
+" cpp_style_comment_block_2 .or cpp_style_comment_block_3;\n"
+"cpp_style_comment_block_2\n"
+" .loop cpp_style_comment_char .and new_line_directive;\n"
+"cpp_style_comment_block_3\n"
+" .loop cpp_style_comment_char;\n"
+"cpp_style_comment_char\n"
+" '\\x0E'-'\\xFF' .or '\\x01'-'\\x09' .or '\\x0B'-'\\x0C';\n"
+"new_line_directive\n"
+" new_line .and optional_directive;\n"
+"new_line\n"
+" generic_new_line .emit '\\n';\n"
+"generic_new_line\n"
+" carriage_return_line_feed .or line_feed_carriage_return .or '\\n' .or '\\r';\n"
+"carriage_return_line_feed\n"
+" '\\r' .and '\\n';\n"
+"line_feed_carriage_return\n"
+" '\\n' .and '\\r';\n"
+"optional_directive\n"
+" directive .emit ESCAPE_TOKEN .or .true;\n"
+"directive\n"
+" dir_define .emit TOKEN_DEFINE .or\n"
+" dir_undef .emit TOKEN_UNDEF .or\n"
+" dir_if .emit TOKEN_IF .or\n"
+" dir_ifdef .emit TOKEN_IF .emit 'd' .emit 'e' .emit 'f' .emit 'i' .emit 'n' .emit 'e' .emit 'd'\n"
+" .emit ' ' .or\n"
+" dir_ifndef .emit TOKEN_IF .emit '!' .emit 'd' .emit 'e' .emit 'f' .emit 'i' .emit 'n' .emit 'e'\n"
+" .emit 'd' .emit ' ' .or\n"
+" dir_else .emit TOKEN_ELSE .or\n"
+" dir_elif .emit TOKEN_ELIF .or\n"
+" dir_endif .emit TOKEN_ENDIF .or\n"
+" dir_ext .emit TOKEN_EXTENSION .or\n"
+" dir_pragma .emit TOKEN_PRAGMA .or\n"
+" dir_line .emit TOKEN_LINE;\n"
+"dir_define\n"
+" optional_space .and '#' .and optional_space .and \"define\" .and symbol .and opt_parameters .and\n"
+" definition;\n"
+"dir_undef\n"
+" optional_space .and '#' .and optional_space .and \"undef\" .and symbol;\n"
+"dir_if\n"
+" optional_space .and '#' .and optional_space .and \"if\" .and expression;\n"
+"dir_ifdef\n"
+" optional_space .and '#' .and optional_space .and \"ifdef\" .and symbol;\n"
+"dir_ifndef\n"
+" optional_space .and '#' .and optional_space .and \"ifndef\" .and symbol;\n"
+"dir_else\n"
+" optional_space .and '#' .and optional_space .and \"else\";\n"
+"dir_elif\n"
+" optional_space .and '#' .and optional_space .and \"elif\" .and expression;\n"
+"dir_endif\n"
+" optional_space .and '#' .and optional_space .and \"endif\";\n"
+"dir_ext\n"
+" optional_space .and '#' .and optional_space .and \"extension\" .and space .and extension_name .and\n"
+" optional_space .and ':' .and optional_space .and extension_behavior;\n"
+"dir_line\n"
+" optional_space .and '#' .and optional_space .and \"line\" .and expression;\n"
+"dir_pragma\n"
+" optional_space .and '#' .and optional_space .and \"pragma\" .and symbol .and opt_pragma_param;\n"
+"opt_pragma_param\n"
+" pragma_param .or .true .emit PRAGMA_NO_PARAM;\n"
+"pragma_param\n"
+" optional_space .and '(' .emit PRAGMA_PARAM .and optional_space .and symbol_no_space .and optional_space .and ')';\n"
+"symbol_no_space\n"
+" symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\\0';\n"
+"symbol\n"
+" space .and symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\\0';\n"
+"opt_parameters\n"
+" parameters .or .true .emit PARAM_END;\n"
+"parameters\n"
+" '(' .and parameters_1 .and optional_space .and ')' .emit PARAM_END;\n"
+"parameters_1\n"
+" parameters_2 .or .true;\n"
+"parameters_2\n"
+" parameter .emit PARAM_PARAMETER .and .loop parameters_3;\n"
+"parameters_3\n"
+" optional_space .and ',' .and parameter .emit PARAM_PARAMETER;\n"
+"parameter\n"
+" optional_space .and symbol_character .emit * .and .loop symbol_character2 .emit * .and\n"
+" .true .emit '\\0';\n"
+"definition\n"
+" .loop definition_character .emit * .and .true .emit '\\0';\n"
+"definition_character\n"
+" '\\x0E'-'\\xFF' .or '\\x01'-'\\x09' .or '\\x0B'-'\\x0C';\n"
+"expression\n"
+" expression_element .and .loop expression_element .and .true .emit '\\0';\n"
+"expression_element\n"
+" expression_character .emit *;\n"
+"expression_character\n"
+" '\\x0E'-'\\xFF' .or '\\x01'-'\\x09' .or '\\x0B'-'\\x0C';\n"
+"extension_name\n"
+" symbol_character .emit * .and .loop symbol_character2 .emit * .and .true .emit '\\0';\n"
+"extension_behavior\n"
+" \"require\" .emit BEHAVIOR_REQUIRE .or\n"
+" \"enable\" .emit BEHAVIOR_ENABLE .or\n"
+" \"warn\" .emit BEHAVIOR_WARN .or\n"
+" \"disable\" .emit BEHAVIOR_DISABLE;\n"
+"optional_space\n"
+" .loop single_space;\n"
+"space\n"
+" single_space .and .loop single_space;\n"
+"single_space\n"
+" ' ' .or '\\t';\n"
+"source_token\n"
+" space .emit ' ' .or complex_token .or source_token_1;\n"
+"source_token_1\n"
+" simple_token .emit ' ' .and .true .emit ' ';\n"
+"complex_token\n"
+" identifier .or number;\n"
+"simple_token\n"
+" increment .or decrement .or lequal .or gequal .or equal .or nequal .or and .or xor .or or .or\n"
+" addto .or subtractfrom .or multiplyto .or divideto .or other;\n"
+"identifier\n"
+" identifier_char1 .emit * .and .loop identifier_char2 .emit *;\n"
+"identifier_char1\n"
+" 'a'-'z' .or 'A'-'Z' .or '_';\n"
+"identifier_char2\n"
+" 'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_';\n"
+"number\n"
+" float .or integer;\n"
+"digit_oct\n"
+" '0'-'7';\n"
+"digit_dec\n"
+" '0'-'9';\n"
+"digit_hex\n"
+" '0'-'9' .or 'A'-'F' .or 'a'-'f';\n"
+"float\n"
+" float_1 .or float_2;\n"
+"float_1\n"
+" float_fractional_constant .and float_optional_exponent_part;\n"
+"float_2\n"
+" float_digit_sequence .and float_exponent_part;\n"
+"float_fractional_constant\n"
+" float_fractional_constant_1 .or float_fractional_constant_2 .or float_fractional_constant_3;\n"
+"float_fractional_constant_1\n"
+" float_digit_sequence .and '.' .emit '.' .and float_digit_sequence;\n"
+"float_fractional_constant_2\n"
+" float_digit_sequence .and '.' .emit '.';\n"
+"float_fractional_constant_3\n"
+" '.' .emit '.' .and float_digit_sequence;\n"
+"float_optional_exponent_part\n"
+" float_exponent_part .or .true;\n"
+"float_digit_sequence\n"
+" digit_dec .emit * .and .loop digit_dec .emit *;\n"
+"float_exponent_part\n"
+" float_exponent_part_1 .or float_exponent_part_2;\n"
+"float_exponent_part_1\n"
+" 'e' .emit 'e' .and float_optional_sign .and float_digit_sequence;\n"
+"float_exponent_part_2\n"
+" 'E' .emit 'E' .and float_optional_sign .and float_digit_sequence;\n"
+"float_optional_sign\n"
+" '+' .emit '+' .or '-' .emit '-' .or .true;\n"
+"integer\n"
+" integer_hex .or integer_oct .or integer_dec;\n"
+"integer_hex\n"
+" '0' .emit '0' .and integer_hex_1 .emit * .and digit_hex .emit * .and\n"
+" .loop digit_hex .emit *;\n"
+"integer_hex_1\n"
+" 'x' .or 'X';\n"
+"integer_oct\n"
+" '0' .emit '0' .and .loop digit_oct .emit *;\n"
+"integer_dec\n"
+" digit_dec .emit * .and .loop digit_dec .emit *;\n"
+"increment\n"
+" '+' .emit * .and '+' .emit *;\n"
+"decrement\n"
+" '-' .emit * .and '-' .emit *;\n"
+"lequal\n"
+" '<' .emit * .and '=' .emit *;\n"
+"gequal\n"
+" '>' .emit * .and '=' .emit *;\n"
+"equal\n"
+" '=' .emit * .and '=' .emit *;\n"
+"nequal\n"
+" '!' .emit * .and '=' .emit *;\n"
+"and\n"
+" '&' .emit * .and '&' .emit *;\n"
+"xor\n"
+" '^' .emit * .and '^' .emit *;\n"
+"or\n"
+" '|' .emit * .and '|' .emit *;\n"
+"addto\n"
+" '+' .emit * .and '=' .emit *;\n"
+"subtractfrom\n"
+" '-' .emit * .and '=' .emit *;\n"
+"multiplyto\n"
+" '*' .emit * .and '=' .emit *;\n"
+"divideto\n"
+" '/' .emit * .and '=' .emit *;\n"
+"other\n"
+" '\\x24'-'\\xFF' .emit * .or '\\x01'-'\\x22' .emit *;\n"
+"symbol_character\n"
+" 'A'-'Z' .or 'a'-'z' .or '_';\n"
+"symbol_character2\n"
+" 'A'-'Z' .or 'a'-'z' .or '0'-'9' .or '_';\n"
+".string string_lexer;\n"
+"string_lexer\n"
+" lex_first_identifier_character .and .loop lex_next_identifier_character;\n"
+"lex_first_identifier_character\n"
+" 'a'-'z' .or 'A'-'Z' .or '_';\n"
+"lex_next_identifier_character\n"
+" 'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_';\n"
+""
diff --git a/mesalib/src/mesa/shader/slang/library/slang_pp_expression.syn b/mesalib/src/mesa/shader/slang/library/slang_pp_expression.syn
new file mode 100644
index 000000000..bfdb220bf
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_pp_expression.syn
@@ -0,0 +1,265 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.6
+ *
+ * Copyright (C) 2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_pp_expression.syn
+ * slang preprocessor expression parser
+ * \author Michal Krol
+ */
+
+/*
+ * Parses one or two (optional) expressions on literal integer constants. Those expressions come
+ * from #if #elif and #line directives. The preprocessor already parsed those directives and
+ * expanded the expression (expressions). All occurences of the operator "defined" are already
+ * replaced with either "0" or "1" literals.
+ */
+
+.syntax expression;
+
+/*
+ * Those separate individual expressions.
+ * For #if/#elif case it is: EXP_EXPRESSION ... EXP_END
+ * For #line case it may be: EXP_EXPRESSION ... EXP_EXPRESSION ... EXP_END
+ */
+.emtcode EXP_END        0
+.emtcode EXP_EXPRESSION 1
+
+.emtcode OP_END          0
+.emtcode OP_PUSHINT      1
+.emtcode OP_LOGICALOR    2
+.emtcode OP_LOGICALAND   3
+.emtcode OP_OR           4
+.emtcode OP_XOR          5
+.emtcode OP_AND          6
+.emtcode OP_EQUAL        7
+.emtcode OP_NOTEQUAL     8
+.emtcode OP_LESSEQUAL    9
+.emtcode OP_GREATEREQUAL 10
+.emtcode OP_LESS         11
+.emtcode OP_GREATER      12
+.emtcode OP_LEFTSHIFT    13
+.emtcode OP_RIGHTSHIFT   14
+.emtcode OP_ADD          15
+.emtcode OP_SUBTRACT     16
+.emtcode OP_MULTIPLY     17
+.emtcode OP_DIVIDE       18
+.emtcode OP_MODULUS      19
+.emtcode OP_PLUS         20
+.emtcode OP_MINUS        21
+.emtcode OP_NEGATE       22
+.emtcode OP_COMPLEMENT   23
+
+expression
+   first_expression .and optional_second_expression .and optional_space .and '\0' .emit EXP_END;
+
+first_expression
+   optional_space .and logical_or_expression .emit EXP_EXPRESSION .and .true .emit OP_END;
+
+optional_second_expression
+   second_expression .or .true;
+
+second_expression
+   space .and logical_or_expression .emit EXP_EXPRESSION .and .true .emit OP_END;
+
+logical_or_expression
+   logical_and_expression .and .loop logical_or_expression_1;
+logical_or_expression_1
+   barbar .and logical_and_expression .and .true .emit OP_LOGICALOR;
+
+logical_and_expression
+   or_expression .and .loop logical_and_expression_1;
+logical_and_expression_1
+   ampersandampersand .and or_expression .and .true .emit OP_LOGICALAND;
+
+or_expression
+   xor_expression .and .loop or_expression_1;
+or_expression_1
+   bar .and xor_expression .and .true .emit OP_OR;
+
+xor_expression
+    and_expression .and .loop xor_expression_1;
+xor_expression_1
+    caret .and and_expression .and .true .emit OP_XOR;
+
+and_expression
+    equality_expression .and .loop and_expression_1;
+and_expression_1
+    ampersand .and equality_expression .and .true .emit OP_AND;
+
+equality_expression
+    relational_expression .and .loop equality_expression_1;
+equality_expression_1
+    equality_expression_2 .or equality_expression_3;
+equality_expression_2
+    equalsequals .and relational_expression .and .true .emit OP_EQUAL;
+equality_expression_3
+    bangequals .and relational_expression .and .true .emit OP_NOTEQUAL;
+
+relational_expression
+    shift_expression .and .loop relational_expression_1;
+relational_expression_1
+    relational_expression_2 .or relational_expression_3 .or relational_expression_4 .or
+    relational_expression_5;
+relational_expression_2
+    lessequals .and shift_expression .and .true .emit OP_LESSEQUAL;
+relational_expression_3
+    greaterequals .and shift_expression .and .true .emit OP_GREATEREQUAL;
+relational_expression_4
+    less .and shift_expression .and .true .emit OP_LESS;
+relational_expression_5
+    greater .and shift_expression .and .true .emit OP_GREATER;
+
+shift_expression
+    additive_expression .and .loop shift_expression_1;
+shift_expression_1
+    shift_expression_2 .or shift_expression_3;
+shift_expression_2
+    lessless .and additive_expression .and .true .emit OP_LEFTSHIFT;
+shift_expression_3
+    greatergreater .and additive_expression .and .true .emit OP_RIGHTSHIFT;
+
+additive_expression
+    multiplicative_expression .and .loop additive_expression_1;
+additive_expression_1
+    additive_expression_2 .or additive_expression_3;
+additive_expression_2
+    plus .and multiplicative_expression .and .true .emit OP_ADD;
+additive_expression_3
+    dash .and multiplicative_expression .and .true .emit OP_SUBTRACT;
+
+multiplicative_expression
+    unary_expression .and .loop multiplicative_expression_1;
+multiplicative_expression_1
+    multiplicative_expression_2 .or multiplicative_expression_3 .or multiplicative_expression_4;
+multiplicative_expression_2
+    star .and unary_expression .and .true .emit OP_MULTIPLY;
+multiplicative_expression_3
+    slash .and unary_expression .and .true .emit OP_DIVIDE;
+multiplicative_expression_4
+    percent .and unary_expression .and .true .emit OP_MODULUS;
+
+unary_expression
+    primary_expression .or unary_expression_1 .or unary_expression_2 .or unary_expression_3 .or
+    unary_expression_4;
+unary_expression_1
+    plus .and unary_expression .and .true .emit OP_PLUS;
+unary_expression_2
+    dash .and unary_expression .and .true .emit OP_MINUS;
+unary_expression_3
+    bang .and unary_expression .and .true .emit OP_NEGATE;
+unary_expression_4
+    tilda .and unary_expression .and .true .emit OP_COMPLEMENT;
+
+primary_expression
+   intconstant .or primary_expression_1;
+primary_expression_1
+   lparen .and logical_or_expression .and rparen;
+
+intconstant
+   integer .emit OP_PUSHINT;
+
+integer
+   integer_dec;
+
+integer_dec
+   digit_dec .emit 10 .emit * .and .loop digit_dec .emit * .and .true .emit '\0';
+
+digit_dec
+   '0'-'9';
+
+optional_space
+   .loop single_space;
+
+space
+   single_space .and .loop single_space;
+
+single_space
+   ' ' .or '\t';
+
+ampersand
+   optional_space .and '&' .and optional_space;
+
+ampersandampersand
+   optional_space .and '&' .and '&' .and optional_space;
+
+bang
+   optional_space .and '!' .and optional_space;
+
+bangequals
+   optional_space .and '!' .and '=' .and optional_space;
+
+bar
+   optional_space .and '|' .and optional_space;
+
+barbar
+   optional_space .and '|' .and '|' .and optional_space;
+
+caret
+   optional_space .and '^' .and optional_space;
+
+dash
+   optional_space .and '-' .and optional_space;
+
+equalsequals
+   optional_space .and '=' .and '=' .and optional_space;
+
+greater
+   optional_space .and '>' .and optional_space;
+
+greaterequals
+   optional_space .and '>' .and '=' .and optional_space;
+
+greatergreater
+   optional_space .and '>' .and '>' .and optional_space;
+
+less
+   optional_space .and '<' .and optional_space;
+
+lessequals
+   optional_space .and '<' .and '=' .and optional_space;
+
+lessless
+   optional_space .and '<' .and '<' .and optional_space;
+
+lparen
+   optional_space .and '(' .and optional_space;
+
+percent
+   optional_space .and '%' .and optional_space;
+
+plus
+   optional_space .and '+' .and optional_space;
+
+rparen
+   optional_space .and ')' .and optional_space;
+
+slash
+   optional_space .and '/' .and optional_space;
+
+star
+   optional_space .and '*' .and optional_space;
+
+tilda
+   optional_space .and '~' .and optional_space;
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_pp_expression_syn.h b/mesalib/src/mesa/shader/slang/library/slang_pp_expression_syn.h
new file mode 100644
index 000000000..f3e9ef6b2
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_pp_expression_syn.h
@@ -0,0 +1,179 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE .syn FILE */
+
+".syntax expression;\n"
+".emtcode EXP_END 0\n"
+".emtcode EXP_EXPRESSION 1\n"
+".emtcode OP_END 0\n"
+".emtcode OP_PUSHINT 1\n"
+".emtcode OP_LOGICALOR 2\n"
+".emtcode OP_LOGICALAND 3\n"
+".emtcode OP_OR 4\n"
+".emtcode OP_XOR 5\n"
+".emtcode OP_AND 6\n"
+".emtcode OP_EQUAL 7\n"
+".emtcode OP_NOTEQUAL 8\n"
+".emtcode OP_LESSEQUAL 9\n"
+".emtcode OP_GREATEREQUAL 10\n"
+".emtcode OP_LESS 11\n"
+".emtcode OP_GREATER 12\n"
+".emtcode OP_LEFTSHIFT 13\n"
+".emtcode OP_RIGHTSHIFT 14\n"
+".emtcode OP_ADD 15\n"
+".emtcode OP_SUBTRACT 16\n"
+".emtcode OP_MULTIPLY 17\n"
+".emtcode OP_DIVIDE 18\n"
+".emtcode OP_MODULUS 19\n"
+".emtcode OP_PLUS 20\n"
+".emtcode OP_MINUS 21\n"
+".emtcode OP_NEGATE 22\n"
+".emtcode OP_COMPLEMENT 23\n"
+"expression\n"
+" first_expression .and optional_second_expression .and optional_space .and '\\0' .emit EXP_END;\n"
+"first_expression\n"
+" optional_space .and logical_or_expression .emit EXP_EXPRESSION .and .true .emit OP_END;\n"
+"optional_second_expression\n"
+" second_expression .or .true;\n"
+"second_expression\n"
+" space .and logical_or_expression .emit EXP_EXPRESSION .and .true .emit OP_END;\n"
+"logical_or_expression\n"
+" logical_and_expression .and .loop logical_or_expression_1;\n"
+"logical_or_expression_1\n"
+" barbar .and logical_and_expression .and .true .emit OP_LOGICALOR;\n"
+"logical_and_expression\n"
+" or_expression .and .loop logical_and_expression_1;\n"
+"logical_and_expression_1\n"
+" ampersandampersand .and or_expression .and .true .emit OP_LOGICALAND;\n"
+"or_expression\n"
+" xor_expression .and .loop or_expression_1;\n"
+"or_expression_1\n"
+" bar .and xor_expression .and .true .emit OP_OR;\n"
+"xor_expression\n"
+" and_expression .and .loop xor_expression_1;\n"
+"xor_expression_1\n"
+" caret .and and_expression .and .true .emit OP_XOR;\n"
+"and_expression\n"
+" equality_expression .and .loop and_expression_1;\n"
+"and_expression_1\n"
+" ampersand .and equality_expression .and .true .emit OP_AND;\n"
+"equality_expression\n"
+" relational_expression .and .loop equality_expression_1;\n"
+"equality_expression_1\n"
+" equality_expression_2 .or equality_expression_3;\n"
+"equality_expression_2\n"
+" equalsequals .and relational_expression .and .true .emit OP_EQUAL;\n"
+"equality_expression_3\n"
+" bangequals .and relational_expression .and .true .emit OP_NOTEQUAL;\n"
+"relational_expression\n"
+" shift_expression .and .loop relational_expression_1;\n"
+"relational_expression_1\n"
+" relational_expression_2 .or relational_expression_3 .or relational_expression_4 .or\n"
+" relational_expression_5;\n"
+"relational_expression_2\n"
+" lessequals .and shift_expression .and .true .emit OP_LESSEQUAL;\n"
+"relational_expression_3\n"
+" greaterequals .and shift_expression .and .true .emit OP_GREATEREQUAL;\n"
+"relational_expression_4\n"
+" less .and shift_expression .and .true .emit OP_LESS;\n"
+"relational_expression_5\n"
+" greater .and shift_expression .and .true .emit OP_GREATER;\n"
+"shift_expression\n"
+" additive_expression .and .loop shift_expression_1;\n"
+"shift_expression_1\n"
+" shift_expression_2 .or shift_expression_3;\n"
+"shift_expression_2\n"
+" lessless .and additive_expression .and .true .emit OP_LEFTSHIFT;\n"
+"shift_expression_3\n"
+" greatergreater .and additive_expression .and .true .emit OP_RIGHTSHIFT;\n"
+"additive_expression\n"
+" multiplicative_expression .and .loop additive_expression_1;\n"
+"additive_expression_1\n"
+" additive_expression_2 .or additive_expression_3;\n"
+"additive_expression_2\n"
+" plus .and multiplicative_expression .and .true .emit OP_ADD;\n"
+"additive_expression_3\n"
+" dash .and multiplicative_expression .and .true .emit OP_SUBTRACT;\n"
+"multiplicative_expression\n"
+" unary_expression .and .loop multiplicative_expression_1;\n"
+"multiplicative_expression_1\n"
+" multiplicative_expression_2 .or multiplicative_expression_3 .or multiplicative_expression_4;\n"
+"multiplicative_expression_2\n"
+" star .and unary_expression .and .true .emit OP_MULTIPLY;\n"
+"multiplicative_expression_3\n"
+" slash .and unary_expression .and .true .emit OP_DIVIDE;\n"
+"multiplicative_expression_4\n"
+" percent .and unary_expression .and .true .emit OP_MODULUS;\n"
+"unary_expression\n"
+" primary_expression .or unary_expression_1 .or unary_expression_2 .or unary_expression_3 .or\n"
+" unary_expression_4;\n"
+"unary_expression_1\n"
+" plus .and unary_expression .and .true .emit OP_PLUS;\n"
+"unary_expression_2\n"
+" dash .and unary_expression .and .true .emit OP_MINUS;\n"
+"unary_expression_3\n"
+" bang .and unary_expression .and .true .emit OP_NEGATE;\n"
+"unary_expression_4\n"
+" tilda .and unary_expression .and .true .emit OP_COMPLEMENT;\n"
+"primary_expression\n"
+" intconstant .or primary_expression_1;\n"
+"primary_expression_1\n"
+" lparen .and logical_or_expression .and rparen;\n"
+"intconstant\n"
+" integer .emit OP_PUSHINT;\n"
+"integer\n"
+" integer_dec;\n"
+"integer_dec\n"
+" digit_dec .emit 10 .emit * .and .loop digit_dec .emit * .and .true .emit '\\0';\n"
+"digit_dec\n"
+" '0'-'9';\n"
+"optional_space\n"
+" .loop single_space;\n"
+"space\n"
+" single_space .and .loop single_space;\n"
+"single_space\n"
+" ' ' .or '\\t';\n"
+"ampersand\n"
+" optional_space .and '&' .and optional_space;\n"
+"ampersandampersand\n"
+" optional_space .and '&' .and '&' .and optional_space;\n"
+"bang\n"
+" optional_space .and '!' .and optional_space;\n"
+"bangequals\n"
+" optional_space .and '!' .and '=' .and optional_space;\n"
+"bar\n"
+" optional_space .and '|' .and optional_space;\n"
+"barbar\n"
+" optional_space .and '|' .and '|' .and optional_space;\n"
+"caret\n"
+" optional_space .and '^' .and optional_space;\n"
+"dash\n"
+" optional_space .and '-' .and optional_space;\n"
+"equalsequals\n"
+" optional_space .and '=' .and '=' .and optional_space;\n"
+"greater\n"
+" optional_space .and '>' .and optional_space;\n"
+"greaterequals\n"
+" optional_space .and '>' .and '=' .and optional_space;\n"
+"greatergreater\n"
+" optional_space .and '>' .and '>' .and optional_space;\n"
+"less\n"
+" optional_space .and '<' .and optional_space;\n"
+"lessequals\n"
+" optional_space .and '<' .and '=' .and optional_space;\n"
+"lessless\n"
+" optional_space .and '<' .and '<' .and optional_space;\n"
+"lparen\n"
+" optional_space .and '(' .and optional_space;\n"
+"percent\n"
+" optional_space .and '%' .and optional_space;\n"
+"plus\n"
+" optional_space .and '+' .and optional_space;\n"
+"rparen\n"
+" optional_space .and ')' .and optional_space;\n"
+"slash\n"
+" optional_space .and '/' .and optional_space;\n"
+"star\n"
+" optional_space .and '*' .and optional_space;\n"
+"tilda\n"
+" optional_space .and '~' .and optional_space;\n"
+""
diff --git a/mesalib/src/mesa/shader/slang/library/slang_pp_version.syn b/mesalib/src/mesa/shader/slang/library/slang_pp_version.syn
new file mode 100644
index 000000000..3fe1a57ba
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_pp_version.syn
@@ -0,0 +1,122 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.6
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_pp_version.syn
+ * slang #version directive syntax
+ * \author Michal Krol
+ */
+
+.syntax version_directive;
+
+version_directive
+	version_directive_1;
+version_directive_1
+	prior_optional_spaces .and optional_version_directive .and .true .emit $;
+
+optional_version_directive
+	version_directive_body .or .true .emit 10 .emit 1;
+
+version_directive_body
+	'#' .and optional_space .and "version" .and space .and version_number .and optional_space .and
+	new_line;
+
+version_number
+	version_number_100 .or version_number_110 .or version_number_120;
+
+version_number_100
+	leading_zeroes .and "100" .emit 0 .emit 1;
+
+version_number_110
+	leading_zeroes .and "110" .emit 10 .emit 1;
+
+version_number_120
+	leading_zeroes .and "120" .emit 20 .emit 1;
+
+leading_zeroes
+	.loop zero;
+
+zero
+	'0';
+
+space
+    single_space .and .loop single_space;
+
+optional_space
+    .loop single_space;
+
+single_space
+    ' ' .or '\t';
+
+prior_optional_spaces
+	.loop prior_space;
+
+prior_space
+	c_style_comment_block .or cpp_style_comment_block .or space .or new_line;
+
+c_style_comment_block
+    '/' .and '*' .and c_style_comment_rest;
+
+c_style_comment_rest
+    .loop c_style_comment_char_no_star .and c_style_comment_rest_1;
+c_style_comment_rest_1
+    c_style_comment_end .or c_style_comment_rest_2;
+c_style_comment_rest_2
+    '*' .and c_style_comment_rest;
+
+c_style_comment_char_no_star
+    '\x2B'-'\xFF' .or '\x01'-'\x29';
+
+c_style_comment_end
+    '*' .and '/';
+
+cpp_style_comment_block
+    '/' .and '/' .and cpp_style_comment_block_1;
+cpp_style_comment_block_1
+    cpp_style_comment_block_2 .or cpp_style_comment_block_3;
+cpp_style_comment_block_2
+    .loop cpp_style_comment_char .and new_line;
+cpp_style_comment_block_3
+    .loop cpp_style_comment_char;
+
+cpp_style_comment_char
+    '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
+
+new_line
+    cr_lf .or lf_cr .or '\n' .or '\r';
+
+cr_lf
+    '\r' .and '\n';
+
+lf_cr
+	'\n' .and '\r';
+
+.string __string_filter;
+
+__string_filter
+    .loop __identifier_char;
+
+__identifier_char
+    'a'-'z' .or 'A'-'Z' .or '_' .or '0'-'9';
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_pp_version_syn.h b/mesalib/src/mesa/shader/slang/library/slang_pp_version_syn.h
new file mode 100644
index 000000000..54aee3ff2
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_pp_version_syn.h
@@ -0,0 +1,69 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE .syn FILE */
+
+".syntax version_directive;\n"
+"version_directive\n"
+"	version_directive_1;\n"
+"version_directive_1\n"
+"	prior_optional_spaces .and optional_version_directive .and .true .emit $;\n"
+"optional_version_directive\n"
+"	version_directive_body .or .true .emit 10 .emit 1;\n"
+"version_directive_body\n"
+"	'#' .and optional_space .and \"version\" .and space .and version_number .and optional_space .and\n"
+"	new_line;\n"
+"version_number\n"
+"	version_number_100 .or version_number_110 .or version_number_120;\n"
+"version_number_100\n"
+"	leading_zeroes .and \"100\" .emit 0 .emit 1;\n"
+"version_number_110\n"
+"	leading_zeroes .and \"110\" .emit 10 .emit 1;\n"
+"version_number_120\n"
+"	leading_zeroes .and \"120\" .emit 20 .emit 1;\n"
+"leading_zeroes\n"
+"	.loop zero;\n"
+"zero\n"
+"	'0';\n"
+"space\n"
+" single_space .and .loop single_space;\n"
+"optional_space\n"
+" .loop single_space;\n"
+"single_space\n"
+" ' ' .or '\\t';\n"
+"prior_optional_spaces\n"
+"	.loop prior_space;\n"
+"prior_space\n"
+"	c_style_comment_block .or cpp_style_comment_block .or space .or new_line;\n"
+"c_style_comment_block\n"
+" '/' .and '*' .and c_style_comment_rest;\n"
+"c_style_comment_rest\n"
+" .loop c_style_comment_char_no_star .and c_style_comment_rest_1;\n"
+"c_style_comment_rest_1\n"
+" c_style_comment_end .or c_style_comment_rest_2;\n"
+"c_style_comment_rest_2\n"
+" '*' .and c_style_comment_rest;\n"
+"c_style_comment_char_no_star\n"
+" '\\x2B'-'\\xFF' .or '\\x01'-'\\x29';\n"
+"c_style_comment_end\n"
+" '*' .and '/';\n"
+"cpp_style_comment_block\n"
+" '/' .and '/' .and cpp_style_comment_block_1;\n"
+"cpp_style_comment_block_1\n"
+" cpp_style_comment_block_2 .or cpp_style_comment_block_3;\n"
+"cpp_style_comment_block_2\n"
+" .loop cpp_style_comment_char .and new_line;\n"
+"cpp_style_comment_block_3\n"
+" .loop cpp_style_comment_char;\n"
+"cpp_style_comment_char\n"
+" '\\x0E'-'\\xFF' .or '\\x01'-'\\x09' .or '\\x0B'-'\\x0C';\n"
+"new_line\n"
+" cr_lf .or lf_cr .or '\\n' .or '\\r';\n"
+"cr_lf\n"
+" '\\r' .and '\\n';\n"
+"lf_cr\n"
+"	'\\n' .and '\\r';\n"
+".string __string_filter;\n"
+"__string_filter\n"
+" .loop __identifier_char;\n"
+"__identifier_char\n"
+" 'a'-'z' .or 'A'-'Z' .or '_' .or '0'-'9';\n"
+""
diff --git a/mesalib/src/mesa/shader/slang/library/slang_shader.syn b/mesalib/src/mesa/shader/slang/library/slang_shader.syn
new file mode 100644
index 000000000..cc5c70a02
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_shader.syn
@@ -0,0 +1,1716 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2004-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2008 VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/*
+ * \file slang_shader.syn
+ * slang vertex/fragment shader syntax
+ * \author Michal Krol
+ */
+
+/*
+ * usage:
+ *   syn2c slang_shader.syn > slang_shader_syn.h
+ *
+ * when modifying or extending this file, several things must be taken into
+ * consideration:
+ *
+ * - when adding new operators that were marked as reserved in the
+ *   initial specification, one must only uncomment particular lines of
+ *   code that refer to operators being added;
+ *
+ * - when adding new shader targets, one must reserve a new value for
+ *   shader_type register and use it in .if constructs for symbols that
+ *   are exclusive for that shader;
+ *
+ * - some symbols mimic output of other symbols - the best example is
+ *   the "for" construct: expression "for (foo(); ; bar())" is seen as
+ *   "for (foo(); true; bar())" by the output processor - hence, special
+ *   care must be taken when rearranging output of essential symbols;
+ *
+ * - order of single-quoted tokens does matter in alternatives - so do not
+ *   parse "<" operator before "<<" and "<<" before "<<=";
+ *
+ * - all double-quoted tokens are internally preprocessed to eliminate
+ *   problems with parsing strings that are prefixes of other strings,
+ *   like "sampler1D" and "sampler1DShadow";
+ */
+
+.syntax translation_unit;
+
+/* revision number - increment after each change affecting emitted output */
+.emtcode REVISION                                   5
+
+/* external declaration (or precision or invariant stmt) */
+.emtcode EXTERNAL_NULL                              0
+.emtcode EXTERNAL_FUNCTION_DEFINITION               1
+.emtcode EXTERNAL_DECLARATION                       2
+.emtcode DEFAULT_PRECISION                          3
+.emtcode INVARIANT_STMT                             4
+
+/* precision */
+.emtcode PRECISION_DEFAULT                          0
+.emtcode PRECISION_LOW                              1
+.emtcode PRECISION_MEDIUM                           2
+.emtcode PRECISION_HIGH                             3
+
+/* declaration */
+.emtcode DECLARATION_FUNCTION_PROTOTYPE             1
+.emtcode DECLARATION_INIT_DECLARATOR_LIST           2
+
+/* function type */
+.emtcode FUNCTION_ORDINARY                          0
+.emtcode FUNCTION_CONSTRUCTOR                       1
+.emtcode FUNCTION_OPERATOR                          2
+
+/* function call type */
+.emtcode FUNCTION_CALL_NONARRAY                     0
+.emtcode FUNCTION_CALL_ARRAY                        1
+
+/* operator type */
+.emtcode OPERATOR_ADDASSIGN                         1
+.emtcode OPERATOR_SUBASSIGN                         2
+.emtcode OPERATOR_MULASSIGN                         3
+.emtcode OPERATOR_DIVASSIGN                         4
+/*.emtcode OPERATOR_MODASSIGN                         5*/
+/*.emtcode OPERATOR_LSHASSIGN                         6*/
+/*.emtcode OPERATOR_RSHASSIGN                         7*/
+/*.emtcode OPERATOR_ORASSIGN                          8*/
+/*.emtcode OPERATOR_XORASSIGN                         9*/
+/*.emtcode OPERATOR_ANDASSIGN                         10*/
+.emtcode OPERATOR_LOGICALXOR                        11
+/*.emtcode OPERATOR_BITOR                             12*/
+/*.emtcode OPERATOR_BITXOR                            13*/
+/*.emtcode OPERATOR_BITAND                            14*/
+.emtcode OPERATOR_LESS                              15
+.emtcode OPERATOR_GREATER                           16
+.emtcode OPERATOR_LESSEQUAL                         17
+.emtcode OPERATOR_GREATEREQUAL                      18
+/*.emtcode OPERATOR_LSHIFT                            19*/
+/*.emtcode OPERATOR_RSHIFT                            20*/
+.emtcode OPERATOR_MULTIPLY                          21
+.emtcode OPERATOR_DIVIDE                            22
+/*.emtcode OPERATOR_MODULUS                           23*/
+.emtcode OPERATOR_INCREMENT                         24
+.emtcode OPERATOR_DECREMENT                         25
+.emtcode OPERATOR_PLUS                              26
+.emtcode OPERATOR_MINUS                             27
+/*.emtcode OPERATOR_COMPLEMENT                        28*/
+.emtcode OPERATOR_NOT                               29
+
+/* init declarator list */
+.emtcode DECLARATOR_NONE                            0
+.emtcode DECLARATOR_NEXT                            1
+
+/* variable declaration */
+.emtcode VARIABLE_NONE                              0
+.emtcode VARIABLE_IDENTIFIER                        1
+.emtcode VARIABLE_INITIALIZER                       2
+.emtcode VARIABLE_ARRAY_EXPLICIT                    3
+.emtcode VARIABLE_ARRAY_UNKNOWN                     4
+
+/* type qualifier */
+.emtcode TYPE_QUALIFIER_NONE                        0
+.emtcode TYPE_QUALIFIER_CONST                       1
+.emtcode TYPE_QUALIFIER_ATTRIBUTE                   2
+.emtcode TYPE_QUALIFIER_VARYING                     3
+.emtcode TYPE_QUALIFIER_UNIFORM                     4
+.emtcode TYPE_QUALIFIER_FIXEDOUTPUT                 5
+.emtcode TYPE_QUALIFIER_FIXEDINPUT                  6
+
+/* invariant qualifier */
+.emtcode TYPE_VARIANT                               90
+.emtcode TYPE_INVARIANT                             91
+
+/* centroid qualifier */
+.emtcode TYPE_CENTER                                95
+.emtcode TYPE_CENTROID                              96
+
+/* type specifier */
+.emtcode TYPE_SPECIFIER_VOID                        0
+.emtcode TYPE_SPECIFIER_BOOL                        1
+.emtcode TYPE_SPECIFIER_BVEC2                       2
+.emtcode TYPE_SPECIFIER_BVEC3                       3
+.emtcode TYPE_SPECIFIER_BVEC4                       4
+.emtcode TYPE_SPECIFIER_INT                         5
+.emtcode TYPE_SPECIFIER_IVEC2                       6
+.emtcode TYPE_SPECIFIER_IVEC3                       7
+.emtcode TYPE_SPECIFIER_IVEC4                       8
+.emtcode TYPE_SPECIFIER_FLOAT                       9
+.emtcode TYPE_SPECIFIER_VEC2                        10
+.emtcode TYPE_SPECIFIER_VEC3                        11
+.emtcode TYPE_SPECIFIER_VEC4                        12
+.emtcode TYPE_SPECIFIER_MAT2                        13
+.emtcode TYPE_SPECIFIER_MAT3                        14
+.emtcode TYPE_SPECIFIER_MAT4                        15
+.emtcode TYPE_SPECIFIER_SAMPLER1D                   16
+.emtcode TYPE_SPECIFIER_SAMPLER2D                   17
+.emtcode TYPE_SPECIFIER_SAMPLER3D                   18
+.emtcode TYPE_SPECIFIER_SAMPLERCUBE                 19
+.emtcode TYPE_SPECIFIER_SAMPLER1DSHADOW             20
+.emtcode TYPE_SPECIFIER_SAMPLER2DSHADOW             21
+.emtcode TYPE_SPECIFIER_SAMPLER2DRECT               22
+.emtcode TYPE_SPECIFIER_SAMPLER2DRECTSHADOW         23
+.emtcode TYPE_SPECIFIER_STRUCT                      24
+.emtcode TYPE_SPECIFIER_TYPENAME                    25
+
+/* OpenGL 2.1 */
+.emtcode TYPE_SPECIFIER_MAT23                       26
+.emtcode TYPE_SPECIFIER_MAT32                       27
+.emtcode TYPE_SPECIFIER_MAT24                       28
+.emtcode TYPE_SPECIFIER_MAT42                       29
+.emtcode TYPE_SPECIFIER_MAT34                       30
+.emtcode TYPE_SPECIFIER_MAT43                       31
+
+/* type specifier array */
+.emtcode TYPE_SPECIFIER_NONARRAY                    0
+.emtcode TYPE_SPECIFIER_ARRAY                       1
+
+/* structure field */
+.emtcode FIELD_NONE                                 0
+.emtcode FIELD_NEXT                                 1
+.emtcode FIELD_ARRAY                                2
+
+/* operation */
+.emtcode OP_END                                     0
+.emtcode OP_BLOCK_BEGIN_NO_NEW_SCOPE                1
+.emtcode OP_BLOCK_BEGIN_NEW_SCOPE                   2
+.emtcode OP_DECLARE                                 3
+.emtcode OP_ASM                                     4
+.emtcode OP_BREAK                                   5
+.emtcode OP_CONTINUE                                6
+.emtcode OP_DISCARD                                 7
+.emtcode OP_RETURN                                  8
+.emtcode OP_EXPRESSION                              9
+.emtcode OP_IF                                      10
+.emtcode OP_WHILE                                   11
+.emtcode OP_DO                                      12
+.emtcode OP_FOR                                     13
+.emtcode OP_PUSH_VOID                               14
+.emtcode OP_PUSH_BOOL                               15
+.emtcode OP_PUSH_INT                                16
+.emtcode OP_PUSH_FLOAT                              17
+.emtcode OP_PUSH_IDENTIFIER                         18
+.emtcode OP_SEQUENCE                                19
+.emtcode OP_ASSIGN                                  20
+.emtcode OP_ADDASSIGN                               21
+.emtcode OP_SUBASSIGN                               22
+.emtcode OP_MULASSIGN                               23
+.emtcode OP_DIVASSIGN                               24
+/*.emtcode OP_MODASSIGN                               25*/
+/*.emtcode OP_LSHASSIGN                               26*/
+/*.emtcode OP_RSHASSIGN                               27*/
+/*.emtcode OP_ORASSIGN                                28*/
+/*.emtcode OP_XORASSIGN                               29*/
+/*.emtcode OP_ANDASSIGN                               30*/
+.emtcode OP_SELECT                                  31
+.emtcode OP_LOGICALOR                               32
+.emtcode OP_LOGICALXOR                              33
+.emtcode OP_LOGICALAND                              34
+/*.emtcode OP_BITOR                                   35*/
+/*.emtcode OP_BITXOR                                  36*/
+/*.emtcode OP_BITAND                                  37*/
+.emtcode OP_EQUAL                                   38
+.emtcode OP_NOTEQUAL                                39
+.emtcode OP_LESS                                    40
+.emtcode OP_GREATER                                 41
+.emtcode OP_LESSEQUAL                               42
+.emtcode OP_GREATEREQUAL                            43
+/*.emtcode OP_LSHIFT                                  44*/
+/*.emtcode OP_RSHIFT                                  45*/
+.emtcode OP_ADD                                     46
+.emtcode OP_SUBTRACT                                47
+.emtcode OP_MULTIPLY                                48
+.emtcode OP_DIVIDE                                  49
+/*.emtcode OP_MODULUS                                 50*/
+.emtcode OP_PREINCREMENT                            51
+.emtcode OP_PREDECREMENT                            52
+.emtcode OP_PLUS                                    53
+.emtcode OP_MINUS                                   54
+/*.emtcode OP_COMPLEMENT                              55*/
+.emtcode OP_NOT                                     56
+.emtcode OP_SUBSCRIPT                               57
+.emtcode OP_CALL                                    58
+.emtcode OP_FIELD                                   59
+.emtcode OP_POSTINCREMENT                           60
+.emtcode OP_POSTDECREMENT                           61
+.emtcode OP_PRECISION                               62
+.emtcode OP_METHOD                                  63
+
+/* parameter qualifier */
+.emtcode PARAM_QUALIFIER_IN                         0
+.emtcode PARAM_QUALIFIER_OUT                        1
+.emtcode PARAM_QUALIFIER_INOUT                      2
+
+/* function parameter */
+.emtcode PARAMETER_NONE                             0
+.emtcode PARAMETER_NEXT                             1
+
+/* function parameter array presence */
+.emtcode PARAMETER_ARRAY_NOT_PRESENT                0
+.emtcode PARAMETER_ARRAY_PRESENT                    1
+
+/* INVALID_EXTERNAL_DECLARATION seems to be reported when there's */
+/* any syntax errors... */
+.errtext INVALID_EXTERNAL_DECLARATION               "2001: Syntax error."
+.errtext INVALID_OPERATOR_OVERRIDE                  "2002: Invalid operator override."
+.errtext LBRACE_EXPECTED                            "2003: '{' expected but '$err_token$' found."
+.errtext LPAREN_EXPECTED                            "2004: '(' expected but '$err_token$' found."
+.errtext RPAREN_EXPECTED                            "2005: ')' expected but '$err_token$' found."
+.errtext INVALID_PRECISION                          "2006: Invalid precision specifier '$err_token$'."
+.errtext INVALID_PRECISION_TYPE                     "2007: Invalid precision type '$err_token$'."
+
+
+/*
+ * tells whether the shader that is being parsed is a built-in shader or not
+ *  0 - normal behaviour
+ *  1 - accepts constructor and operator definitions and __asm statements
+ * the implementation will set it to 1 when compiling internal built-in shaders
+ */
+.regbyte parsing_builtin                            0
+
+/*
+ * holds the type of the shader being parsed; possible values are
+ * listed below.
+ *   FRAGMENT_SHADER            1
+ *   VERTEX_SHADER              2
+ * shader type is set by the caller before parsing
+ */
+.regbyte shader_type                                0
+
+/*
+ * <variable_identifier> ::= <identifier>
+ */
+variable_identifier
+    identifier .emit OP_PUSH_IDENTIFIER;
+
+/*
+ *  <primary_expression> ::= <variable_identifier>
+ *                         | <intconstant>
+ *                         | <floatconstant>
+ *                         | <boolconstant>
+ *                         | "(" <expression> ")"
+ */
+primary_expression
+    floatconstant .or boolconstant .or intconstant .or variable_identifier .or primary_expression_1;
+primary_expression_1
+    lparen .and expression .and rparen;
+
+/*
+ * <postfix_expression> ::= <primary_expression>
+ *                        | <postfix_expression> "[" <integer_expression> "]"
+ *                        | <function_call>
+ *                        | <postfix_expression> "." <field_selection>
+ *                        | <postfix_expression> "++"
+ *                        | <postfix_expression> "--"
+ */
+postfix_expression
+    postfix_expression_1 .and .loop postfix_expression_2;
+postfix_expression_1
+    function_call .or primary_expression;
+postfix_expression_2
+    postfix_expression_3 .or postfix_expression_4 .or
+    plusplus .emit OP_POSTINCREMENT .or
+    minusminus .emit OP_POSTDECREMENT;
+postfix_expression_3
+    lbracket .and integer_expression .and rbracket .emit OP_SUBSCRIPT;
+postfix_expression_4
+    dot .and field_selection .emit OP_FIELD;
+
+/*
+ * <integer_expression> ::= <expression>
+ */
+integer_expression
+    expression;
+
+/*
+ * <function_call> ::= <function_call_generic>
+ */
+function_call
+    function_call_or_method;
+
+/*
+ * <function_call_or_method> ::= <regular_function_call>
+ *                             | <postfix_expression> "." <function_call_generic>
+ */
+function_call_or_method
+    regular_function_call .or method_call;
+
+/*
+ * <method_call> ::= <identifier> "." <function_call_generic>
+ */
+method_call
+    identifier .emit OP_METHOD .and dot .and function_call_generic .and .true .emit OP_END;
+
+/*
+ * <regular_function_call> ::= <function_call_generic>
+ */
+regular_function_call
+    function_call_generic .emit OP_CALL .and .true .emit OP_END;
+
+/*
+ * <function_call_generic> ::= <function_call_header_with_parameters> ")"
+ *                           | <function_call_header_no_parameters> ")"
+ */
+function_call_generic
+    function_call_generic_1 .or function_call_generic_2;
+function_call_generic_1
+    function_call_header_with_parameters .and rparen .error RPAREN_EXPECTED;
+function_call_generic_2
+    function_call_header_no_parameters .and rparen .error RPAREN_EXPECTED;
+
+/*
+ * <function_call_header_no_parameters>::= <function_call_header> "void"
+ *                                        | <function_call_header>
+ */
+function_call_header_no_parameters
+    function_call_header .and function_call_header_no_parameters_1;
+function_call_header_no_parameters_1
+    "void" .or .true;
+
+/*
+ * <function_call_header_with_parameters> ::= <function_call_header> <assignment_expression>
+ *                                          | <function_call_header_with_parameters> "," <assignment_expression>
+ */
+function_call_header_with_parameters
+    function_call_header .and assignment_expression .and .true .emit OP_END .and
+    .loop function_call_header_with_parameters_1;
+function_call_header_with_parameters_1
+    comma .and assignment_expression .and .true .emit OP_END;
+
+/*
+ * <function_call_header> ::= <function_identifier> "("
+ */
+function_call_header
+    function_identifier .and lparen;
+
+/*
+ * <function_identifier> ::= <constructor_identifier>
+ *                         | <identifier>
+ *                         | <type_specifier>
+ *
+ * note: <constructor_identifier> and <type_specifier> have been deleted
+ */
+function_identifier
+    identifier .and function_identifier_opt_array;
+function_identifier_opt_array
+    function_identifier_array .emit FUNCTION_CALL_ARRAY .or
+    .true .emit FUNCTION_CALL_NONARRAY;
+function_identifier_array
+    lbracket .and constant_expression .and rbracket;
+
+/*
+ * <unary_expression> ::= <postfix_expression>
+ *                      | "++" <unary_expression>
+ *                      | "--" <unary_expression>
+ *                      | <unary_operator> <unary_expression>
+ *
+ * <unary_operator>   ::= "+"
+ *                      | "-"
+ *                      | "!"
+ *                      | "~" // reserved
+ */
+unary_expression
+    postfix_expression .or unary_expression_1 .or unary_expression_2 .or unary_expression_3 .or
+    unary_expression_4 .or unary_expression_5/* .or unary_expression_6*/;
+unary_expression_1
+    plusplus .and unary_expression .and .true .emit OP_PREINCREMENT;
+unary_expression_2
+    minusminus .and unary_expression .and .true .emit OP_PREDECREMENT;
+unary_expression_3
+    plus .and unary_expression .and .true .emit OP_PLUS;
+unary_expression_4
+    minus .and unary_expression .and .true .emit OP_MINUS;
+unary_expression_5
+    bang .and unary_expression .and .true .emit OP_NOT;
+/*unary_expression_6
+    tilde .and unary_expression .and .true .emit OP_COMPLEMENT;*/
+
+/*
+ * <multiplicative_expression> ::= <unary_expression>
+ *                               | <multiplicative_expression> "*" <unary_expression>
+ *                               | <multiplicative_expression> "/" <unary_expression>
+ *                               | <multiplicative_expression> "%" <unary_expression> // reserved
+ */
+multiplicative_expression
+    unary_expression .and .loop multiplicative_expression_1;
+multiplicative_expression_1
+    multiplicative_expression_2 .or multiplicative_expression_3/* .or multiplicative_expression_4*/;
+multiplicative_expression_2
+    star .and unary_expression .and .true .emit OP_MULTIPLY;
+multiplicative_expression_3
+    slash .and unary_expression .and .true .emit OP_DIVIDE;
+/*multiplicative_expression_4
+    percent .and unary_expression .and .true .emit OP_MODULUS;*/
+
+/*
+ * <additive_expression> ::= <multiplicative_expression>
+ *                         | <additive_expression> "+" <multiplicative_expression>
+ *                         | <additive_expression> "-" <multiplicative_expression>
+ */
+additive_expression
+    multiplicative_expression .and .loop additive_expression_1;
+additive_expression_1
+    additive_expression_2 .or additive_expression_3;
+additive_expression_2
+    plus .and multiplicative_expression .and .true .emit OP_ADD;
+additive_expression_3
+    minus .and multiplicative_expression .and .true .emit OP_SUBTRACT;
+
+/*
+ * <shift_expression> ::= <additive_expression>
+ *                      | <shift_expression> "<<" <additive_expression> // reserved
+ *                      | <shift_expression> ">>" <additive_expression> // reserved
+ */
+shift_expression
+    additive_expression/* .and .loop shift_expression_1*/;
+/*shift_expression_1
+    shift_expression_2 .or shift_expression_3;*/
+/*shift_expression_2
+    lessless .and additive_expression .and .true .emit OP_LSHIFT;*/
+/*shift_expression_3
+    greatergreater .and additive_expression .and .true .emit OP_RSHIFT;*/
+
+/*
+ * <relational_expression> ::= <shift_expression>
+ *                           | <relational_expression> "<" <shift_expression>
+ *                           | <relational_expression> ">" <shift_expression>
+ *                           | <relational_expression> "<=" <shift_expression>
+ *                           | <relational_expression> ">=" <shift_expression>
+ */
+relational_expression
+    shift_expression .and .loop relational_expression_1;
+relational_expression_1
+    relational_expression_2 .or relational_expression_3 .or relational_expression_4 .or
+    relational_expression_5;
+relational_expression_2
+    lessequals .and shift_expression .and .true .emit OP_LESSEQUAL;
+relational_expression_3
+    greaterequals .and shift_expression .and .true .emit OP_GREATEREQUAL;
+relational_expression_4
+    less .and shift_expression .and .true .emit OP_LESS;
+relational_expression_5
+    greater .and shift_expression .and .true .emit OP_GREATER;
+
+/*
+ * <equality_expression> ::= <relational_expression>
+ *                         | <equality_expression> "==" <relational_expression>
+ *                         | <equality_expression> "!=" <relational_expression>
+ */
+equality_expression
+    relational_expression .and .loop equality_expression_1;
+equality_expression_1
+    equality_expression_2 .or equality_expression_3;
+equality_expression_2
+    equalsequals .and relational_expression .and .true .emit OP_EQUAL;
+equality_expression_3
+    bangequals .and relational_expression .and .true .emit OP_NOTEQUAL;
+
+/*
+ * <and_expression> ::= <equality_expression>
+ *                    | <and_expression> "&" <equality_expression> // reserved
+ */
+and_expression
+    equality_expression/* .and .loop and_expression_1*/;
+/*and_expression_1
+    ampersand .and equality_expression .and .true .emit OP_BITAND;*/
+
+/*
+ * <exclusive_or_expression> ::= <and_expression>
+ *                             | <exclusive_or_expression> "^" <and_expression> // reserved
+ */
+exclusive_or_expression
+    and_expression/* .and .loop exclusive_or_expression_1*/;
+/*exclusive_or_expression_1
+    caret .and and_expression .and .true .emit OP_BITXOR;*/
+
+/*
+ * <inclusive_or_expression> ::= <exclusive_or_expression>
+ *                             | <inclusive_or_expression> "|" <exclusive_or_expression> // reserved
+ */
+inclusive_or_expression
+    exclusive_or_expression/* .and .loop inclusive_or_expression_1*/;
+/*inclusive_or_expression_1
+    bar .and exclusive_or_expression .and .true .emit OP_BITOR;*/
+
+/*
+ * <logical_and_expression> ::= <inclusive_or_expression>
+ *                            | <logical_and_expression> "&&" <inclusive_or_expression>
+ */
+logical_and_expression
+    inclusive_or_expression .and .loop logical_and_expression_1;
+logical_and_expression_1
+    ampersandampersand .and inclusive_or_expression .and .true .emit OP_LOGICALAND;
+
+/*
+ * <logical_xor_expression> ::= <logical_and_expression>
+ *                            | <logical_xor_expression> "^^" <logical_and_expression>
+ */
+logical_xor_expression
+    logical_and_expression .and .loop logical_xor_expression_1;
+logical_xor_expression_1
+    caretcaret .and logical_and_expression .and .true .emit OP_LOGICALXOR;
+
+/*
+ * <logical_or_expression> ::= <logical_xor_expression>
+ *                           | <logical_or_expression> "||" <logical_xor_expression>
+ */
+logical_or_expression
+    logical_xor_expression .and .loop logical_or_expression_1;
+logical_or_expression_1
+    barbar .and logical_xor_expression .and .true .emit OP_LOGICALOR;
+
+/*
+ * <conditional_expression> ::= <logical_or_expression>
+ *                            | <logical_or_expression> "?" <expression> ":" <conditional_expression>
+ */
+conditional_expression
+    logical_or_expression .and .loop conditional_expression_1;
+conditional_expression_1
+    question .and expression .and colon .and conditional_expression .and .true .emit OP_SELECT;
+
+/*
+ * <assignment_expression> ::= <conditional_expression>
+ *                           | <unary_expression> <assignment_operator> <assignment_expression>
+ *
+ * <assignment_operator> ::= "="
+ *                         | "*="
+ *                         | "/="
+ *                         | "+="
+ *                         | "-="
+ *                         | "%=" // reserved
+ *                         | "<<=" // reserved
+ *                         | ">>=" // reserved
+ *                         | "&=" // reserved
+ *                         | "^=" // reserved
+ *                         | "|=" // reserved
+ */
+assignment_expression
+    assignment_expression_1 .or assignment_expression_2 .or assignment_expression_3 .or
+    assignment_expression_4 .or assignment_expression_5/* .or assignment_expression_6 .or
+    assignment_expression_7 .or assignment_expression_8 .or assignment_expression_9 .or
+    assignment_expression_10 .or assignment_expression_11*/ .or conditional_expression;
+assignment_expression_1
+    unary_expression .and equals .and assignment_expression .and .true .emit OP_ASSIGN;
+assignment_expression_2
+    unary_expression .and starequals .and assignment_expression .and .true .emit OP_MULASSIGN;
+assignment_expression_3
+    unary_expression .and slashequals .and assignment_expression .and .true .emit OP_DIVASSIGN;
+assignment_expression_4
+    unary_expression .and plusequals .and assignment_expression .and .true .emit OP_ADDASSIGN;
+assignment_expression_5
+    unary_expression .and minusequals .and assignment_expression .and .true .emit OP_SUBASSIGN;
+/*assignment_expression_6
+    unary_expression .and percentequals .and assignment_expression .and .true .emit OP_MODASSIGN;*/
+/*assignment_expression_7
+    unary_expression .and lesslessequals .and assignment_expression .and .true .emit OP_LSHASSIGN;*/
+/*assignment_expression_8
+    unary_expression .and greatergreaterequals .and assignment_expression .and
+    .true .emit OP_RSHASSIGN;*/
+/*assignment_expression_9
+    unary_expression .and ampersandequals .and assignment_expression .and .true .emit OP_ANDASSIGN;*/
+/*assignment_expression_10
+    unary_expression .and caretequals .and assignment_expression .and .true .emit OP_XORASSIGN;*/
+/*assignment_expression_11
+    unary_expression .and barequals .and assignment_expression .and .true .emit OP_ORASSIGN;*/
+
+/*
+ * <expression> ::= <assignment_expression>
+ *                | <expression> "," <assignment_expression>
+ */
+expression
+    assignment_expression .and .loop expression_1;
+expression_1
+    comma .and assignment_expression .and .true .emit OP_SEQUENCE;
+
+/*
+ * <constant_expression> ::= <conditional_expression>
+ */
+constant_expression
+    conditional_expression .and .true .emit OP_END;
+
+/*
+ * <declaration> ::= <function_prototype> ";"
+ *                 | <init_declarator_list> ";"
+ */
+declaration
+    declaration_1 .or declaration_2;
+declaration_1
+    function_prototype .emit DECLARATION_FUNCTION_PROTOTYPE .and semicolon;
+declaration_2
+    init_declarator_list .emit DECLARATION_INIT_DECLARATOR_LIST .and semicolon;
+
+/*
+ * <function_prototype> ::= <function_header> "void" ")"
+ *                        | <function_declarator> ")"
+ */
+function_prototype
+    function_prototype_1 .or function_prototype_2;
+function_prototype_1
+    function_header .and "void" .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE;
+function_prototype_2
+    function_declarator .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE;
+
+/*
+ * <function_declarator> ::= <function_header>
+ *                         | <function_header_with_parameters>
+ */
+function_declarator
+    function_header_with_parameters .or function_header;
+
+/*
+ * <function_header_with_parameters> ::= <function_header> <parameter_declaration>
+ *                                     | <function_header_with_parameters> ","
+ *                                       <parameter_declaration>
+ */
+function_header_with_parameters
+    function_header .and parameter_declaration .and .loop function_header_with_parameters_1;
+function_header_with_parameters_1
+    comma .and parameter_declaration;
+
+/*
+ * <function_header> ::= <fully_specified_type> <identifier> "("
+ */
+function_header
+    function_header_nospace .or function_header_space;
+function_header_space
+    fully_specified_type_space .and space .and function_decl_identifier .and lparen;
+function_header_nospace
+    fully_specified_type_nospace .and function_decl_identifier .and lparen;
+
+/*
+ * <function_decl_identifier> ::= "__constructor"
+ *                              | <__operator>
+ *                              | <identifier>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows operator and constructor prototypes and definitions
+ */
+function_decl_identifier
+    .if (parsing_builtin != 0) __operator .emit FUNCTION_OPERATOR .or
+    .if (parsing_builtin != 0) "__constructor" .emit FUNCTION_CONSTRUCTOR .or
+    identifier .emit FUNCTION_ORDINARY;
+
+/*
+ * <__operator> ::= "__operator" <overriden_op>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows operator prototypes and definitions
+ */
+__operator
+    "__operator" .and overriden_operator .error INVALID_OPERATOR_OVERRIDE;
+
+/*
+ * <overriden_op> ::= "="
+ *                  | "+="
+ *                  | "-="
+ *                  | "*="
+ *                  | "/="
+ *                  | "%=" // reserved
+ *                  | "<<=" // reserved
+ *                  | ">>=" // reserved
+ *                  | "&=" // reserved
+ *                  | "^=" // reserved
+ *                  | "|=" // reserved
+ *                  | "^^"
+ *                  | "|" // reserved
+ *                  | "^" // reserved
+ *                  | "&" // reserved
+ *                  | "=="
+ *                  | "!="
+ *                  | "<"
+ *                  | ">"
+ *                  | "<="
+ *                  | ">="
+ *                  | "<<" // reserved
+ *                  | ">>" // reserved
+ *                  | "*"
+ *                  | "/"
+ *                  | "%" // reserved
+ *                  | "++"
+ *                  | "--"
+ *                  | "+"
+ *                  | "-"
+ *                  | "~" // reserved
+ *                  | "!"
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows operator prototypes and definitions
+ */
+overriden_operator
+    plusplus .emit OPERATOR_INCREMENT .or
+    plusequals .emit OPERATOR_ADDASSIGN .or
+    plus .emit OPERATOR_PLUS .or
+    minusminus .emit OPERATOR_DECREMENT .or
+    minusequals .emit OPERATOR_SUBASSIGN .or
+    minus .emit OPERATOR_MINUS .or
+    bang .emit OPERATOR_NOT .or
+    starequals .emit OPERATOR_MULASSIGN .or
+    star .emit OPERATOR_MULTIPLY .or
+    slashequals .emit OPERATOR_DIVASSIGN .or
+    slash .emit OPERATOR_DIVIDE .or
+    lessequals .emit OPERATOR_LESSEQUAL .or
+    /*lesslessequals .emit OPERATOR_LSHASSIGN .or*/
+    /*lessless .emit OPERATOR_LSHIFT .or*/
+    less .emit OPERATOR_LESS .or
+    greaterequals .emit OPERATOR_GREATEREQUAL .or
+    /*greatergreaterequals .emit OPERATOR_RSHASSIGN .or*/
+    /*greatergreater .emit OPERATOR_RSHIFT .or*/
+    greater .emit OPERATOR_GREATER .or
+    /*percentequals .emit OPERATOR_MODASSIGN .or*/
+    /*percent .emit OPERATOR_MODULUS .or*/
+    /*ampersandequals .emit OPERATOR_ANDASSIGN */
+    /*ampersand .emit OPERATOR_BITAND .or*/
+    /*barequals .emit OPERATOR_ORASSIGN .or*/
+    /*bar .emit OPERATOR_BITOR .or*/
+    /*tilde .emit OPERATOR_COMPLEMENT .or*/
+    /*caretequals .emit OPERATOR_XORASSIGN .or*/
+    caretcaret .emit OPERATOR_LOGICALXOR /*.or
+    caret .emit OPERATOR_BITXOR*/;
+
+/*
+ * <parameter_declarator> ::= <type_specifier> <identifier>
+ *                          | <type_specifier> <identifier> "[" <constant_expression> "]"
+ */
+parameter_declarator
+    parameter_declarator_nospace .or parameter_declarator_space;
+parameter_declarator_nospace
+    type_specifier_nospace .and identifier .and parameter_declarator_1;
+parameter_declarator_space
+    type_specifier_space .and space .and identifier .and parameter_declarator_1;
+parameter_declarator_1
+    parameter_declarator_2 .emit PARAMETER_ARRAY_PRESENT .or
+    .true .emit PARAMETER_ARRAY_NOT_PRESENT;
+parameter_declarator_2
+    lbracket .and constant_expression .and rbracket;
+
+/*
+ * <parameter_declaration> ::= <type_qualifier> <parameter_qualifier>
+ *                             <precision> <parameter_declarator>
+ *                           | <type_qualifier> <parameter_qualifier>
+ *                             <precision> <parameter_type_specifier>
+ *                           | <type_qualifier> <parameter_qualifier>
+ *                             <parameter_declarator>
+ *                           | <type_qualifier> <parameter_qualifier>
+ *                             <parameter_type_specifier>
+ *                           | <parameter_qualifier> <precision>
+ *                             <parameter_declarator>
+ *                           | <parameter_qualifier> <precision>
+ *                             <parameter_type_specifier>
+ *                           | <parameter_qualifier> <parameter_declarator>
+ *                           | <parameter_qualifier> <parameter_type_specifier>
+ */
+parameter_declaration
+    parameter_declaration_1 .emit PARAMETER_NEXT;
+parameter_declaration_1
+    parameter_declaration_2 .or parameter_declaration_3;
+parameter_declaration_2
+    type_qualifier .and space .and parameter_qualifier .and parameter_declaration_4;
+parameter_declaration_3
+    parameter_qualifier .emit TYPE_QUALIFIER_NONE .and parameter_declaration_4;
+parameter_declaration_4
+    parameter_declaration_optprec .and parameter_declaration_rest;
+parameter_declaration_optprec
+    parameter_declaration_prec .or .true .emit PRECISION_DEFAULT;
+parameter_declaration_prec
+    precision .and space;
+parameter_declaration_rest
+    parameter_declarator .or parameter_type_specifier;
+
+/*
+ * <parameter_qualifier> ::= "in"
+ *                         | "out"
+ *                         | "inout"
+ *                         | ""
+ */
+parameter_qualifier
+    parameter_qualifier_1 .or .true .emit PARAM_QUALIFIER_IN;
+parameter_qualifier_1
+    parameter_qualifier_2 .and space;
+parameter_qualifier_2
+    "in" .emit PARAM_QUALIFIER_IN .or
+    "out" .emit PARAM_QUALIFIER_OUT .or
+    "inout" .emit PARAM_QUALIFIER_INOUT;
+
+/*
+ * <parameter_type_specifier> ::= <type_specifier>
+ *                              | <type_specifier> "[" <constant_expression> "]"
+ */
+parameter_type_specifier
+    parameter_type_specifier_1 .and .true .emit '\0' .and parameter_type_specifier_2;
+parameter_type_specifier_1
+    type_specifier_nospace .or type_specifier_space;
+parameter_type_specifier_2
+    parameter_type_specifier_3 .emit PARAMETER_ARRAY_PRESENT .or
+    .true .emit PARAMETER_ARRAY_NOT_PRESENT;
+parameter_type_specifier_3
+    lbracket .and constant_expression .and rbracket;
+
+/*
+ * <init_declarator_list> ::= <single_declaration>
+ *                          | <init_declarator_list> "," <identifier>
+ *                          | <init_declarator_list> "," <identifier> "[" "]"
+ *                          | <init_declarator_list> "," <identifier> "[" <constant_expression> "]"
+ *                          | <init_declarator_list> "," <identifier> "=" <initializer>
+ */
+init_declarator_list
+    single_declaration .and .loop init_declarator_list_1 .emit DECLARATOR_NEXT .and
+    .true .emit DECLARATOR_NONE;
+init_declarator_list_1
+    comma .and identifier .emit VARIABLE_IDENTIFIER .and init_declarator_list_2;
+init_declarator_list_2
+    init_declarator_list_3 .or init_declarator_list_4 .or .true .emit VARIABLE_NONE;
+init_declarator_list_3
+    equals .and initializer .emit VARIABLE_INITIALIZER;
+init_declarator_list_4
+    lbracket .and init_declarator_list_5 .and rbracket;
+init_declarator_list_5
+    constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN;
+
+/*
+ * <single_declaration> ::= <fully_specified_type>
+ *                        | <fully_specified_type> <identifier>
+ *                        | <fully_specified_type> <identifier> "[" "]"
+ *                        | <fully_specified_type> <identifier> "[" <constant_expression> "]"
+ *                        | <fully_specified_type> <identifier> "=" <initializer>
+ */
+single_declaration
+    single_declaration_nospace .or single_declaration_space;
+single_declaration_space
+    fully_specified_type_space .and single_declaration_space_1;
+single_declaration_nospace
+    fully_specified_type_nospace .and single_declaration_nospace_1;
+single_declaration_space_1
+    single_declaration_space_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE;
+single_declaration_nospace_1
+    single_declaration_nospace_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE;
+single_declaration_space_2
+    space .and identifier .and single_declaration_3;
+single_declaration_nospace_2
+    identifier .and single_declaration_3;
+single_declaration_3
+    single_declaration_4 .or single_declaration_5 .or .true .emit VARIABLE_NONE;
+single_declaration_4
+    equals .and initializer .emit VARIABLE_INITIALIZER;
+single_declaration_5
+    lbracket .and single_declaration_6 .and rbracket;
+single_declaration_6
+    constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN;
+
+/*
+ * <fully_specified_type> ::= <opt_invariant> <opt_centroid> <opt_qualifer> <opt_precision> <type_specifier>
+ *
+ * Example: "invariant varying highp vec3"
+ */
+fully_specified_type_space
+    fully_specified_type_optinvariant .and fully_specified_type_optcentroid .and fully_specified_type_optqual .and fully_specified_type_optprec .and type_specifier_space;
+fully_specified_type_nospace
+    fully_specified_type_optinvariant .and fully_specified_type_optcentroid .and fully_specified_type_optqual .and fully_specified_type_optprec .and type_specifier_nospace;
+fully_specified_type_optinvariant
+    fully_specified_type_invariant .or .true .emit TYPE_VARIANT;
+fully_specified_type_invariant
+    invariant_qualifier .and space;
+fully_specified_type_optcentroid
+    fully_specified_type_centroid .or .true .emit TYPE_CENTER;
+fully_specified_type_centroid
+    centroid_qualifier .and space;
+fully_specified_type_optqual
+    fully_specified_type_qual .or .true .emit TYPE_QUALIFIER_NONE;
+fully_specified_type_qual
+    type_qualifier .and space;
+fully_specified_type_optprec
+    fully_specified_type_prec .or .true .emit PRECISION_DEFAULT;
+fully_specified_type_prec
+    precision .and space;
+
+/*
+ * <invariant_qualifier> ::= "invariant"
+ */
+invariant_qualifier
+    "invariant" .emit TYPE_INVARIANT;
+
+centroid_qualifier
+    "centroid" .emit TYPE_CENTROID;
+
+
+/*
+ * <type_qualifier> ::= "const"
+ *                    | "attribute" // Vertex only.
+ *                    | "varying"
+ *                    | "uniform"
+ *                    | "__fixed_output"
+ *                    | "__fixed_input"
+ *
+ * note: this is an extension to the standard language specification,
+ * normally slang disallows __fixed_output and __fixed_input type qualifiers
+ */
+type_qualifier
+    "const" .emit TYPE_QUALIFIER_CONST .or
+    .if (shader_type == 2) "attribute" .emit TYPE_QUALIFIER_ATTRIBUTE .or
+    "varying" .emit TYPE_QUALIFIER_VARYING .or
+    "uniform" .emit TYPE_QUALIFIER_UNIFORM .or
+    .if (parsing_builtin != 0) "__fixed_output" .emit TYPE_QUALIFIER_FIXEDOUTPUT .or
+    .if (parsing_builtin != 0) "__fixed_input" .emit TYPE_QUALIFIER_FIXEDINPUT;
+
+/*
+ * <type_specifier_nonarray> ::= "void"
+ *                             | "float"
+ *                             | "int"
+ *                             | "bool"
+ *                             | "vec2"
+ *                             | "vec3"
+ *                             | "vec4"
+ *                             | "bvec2"
+ *                             | "bvec3"
+ *                             | "bvec4"
+ *                             | "ivec2"
+ *                             | "ivec3"
+ *                             | "ivec4"
+ *                             | "mat2"
+ *                             | "mat3"
+ *                             | "mat4"
+ *                             | "mat2x3"
+ *                             | "mat3x2"
+ *                             | "mat2x4"
+ *                             | "mat4x2"
+ *                             | "mat3x4"
+ *                             | "mat4x3"
+ *                             | "sampler1D"
+ *                             | "sampler2D"
+ *                             | "sampler3D"
+ *                             | "samplerCube"
+ *                             | "sampler1DShadow"
+ *                             | "sampler2DShadow"
+ *                             | "sampler2DRect"
+ *                             | "sampler2DRectShadow"
+ *                             | <struct_specifier>
+ *                             | <type_name>
+ */
+type_specifier_nonarray_space
+    "void" .emit TYPE_SPECIFIER_VOID .or
+    "float" .emit TYPE_SPECIFIER_FLOAT .or
+    "int" .emit TYPE_SPECIFIER_INT .or
+    "bool" .emit TYPE_SPECIFIER_BOOL .or
+    "vec2" .emit TYPE_SPECIFIER_VEC2 .or
+    "vec3" .emit TYPE_SPECIFIER_VEC3 .or
+    "vec4" .emit TYPE_SPECIFIER_VEC4 .or
+    "bvec2" .emit TYPE_SPECIFIER_BVEC2 .or
+    "bvec3" .emit TYPE_SPECIFIER_BVEC3 .or
+    "bvec4" .emit TYPE_SPECIFIER_BVEC4 .or
+    "ivec2" .emit TYPE_SPECIFIER_IVEC2 .or
+    "ivec3" .emit TYPE_SPECIFIER_IVEC3 .or
+    "ivec4" .emit TYPE_SPECIFIER_IVEC4 .or
+    "mat2" .emit TYPE_SPECIFIER_MAT2 .or
+    "mat3" .emit TYPE_SPECIFIER_MAT3 .or
+    "mat4" .emit TYPE_SPECIFIER_MAT4 .or
+    "mat2x3" .emit TYPE_SPECIFIER_MAT23 .or
+    "mat3x2" .emit TYPE_SPECIFIER_MAT32 .or
+    "mat2x4" .emit TYPE_SPECIFIER_MAT24 .or
+    "mat4x2" .emit TYPE_SPECIFIER_MAT42 .or
+    "mat3x4" .emit TYPE_SPECIFIER_MAT34 .or
+    "mat4x3" .emit TYPE_SPECIFIER_MAT43 .or
+    "sampler1D" .emit TYPE_SPECIFIER_SAMPLER1D .or
+    "sampler2D" .emit TYPE_SPECIFIER_SAMPLER2D .or
+    "sampler3D" .emit TYPE_SPECIFIER_SAMPLER3D .or
+    "samplerCube" .emit TYPE_SPECIFIER_SAMPLERCUBE .or
+    "sampler1DShadow" .emit TYPE_SPECIFIER_SAMPLER1DSHADOW .or
+    "sampler2DShadow" .emit TYPE_SPECIFIER_SAMPLER2DSHADOW .or
+    "sampler2DRect" .emit TYPE_SPECIFIER_SAMPLER2DRECT .or
+    "sampler2DRectShadow" .emit TYPE_SPECIFIER_SAMPLER2DRECTSHADOW .or
+    type_name .emit TYPE_SPECIFIER_TYPENAME;
+type_specifier_nonarray_nospace
+    struct_specifier .emit TYPE_SPECIFIER_STRUCT;
+type_specifier_nonarray
+    type_specifier_nonarray_nospace .or type_specifier_nonarray_space;
+
+/*
+ * <type_specifier> ::= <type_specifier_nonarray>
+ *                    | <type_specifier_nonarray> "[" <constant_expression> "]"
+ */
+type_specifier_space
+    type_specifier_nonarray_space .and .true .emit TYPE_SPECIFIER_NONARRAY;
+type_specifier_nospace
+    type_specifier_nospace_array .or type_specifier_nospace_1;
+type_specifier_nospace_1
+    type_specifier_nonarray_nospace .and .true .emit TYPE_SPECIFIER_NONARRAY;
+type_specifier_nospace_array
+    type_specifier_nonarray .and lbracket .emit TYPE_SPECIFIER_ARRAY .and constant_expression .and rbracket;
+
+/*
+ * <struct_specifier> ::= "struct" <identifier> "{" <struct_declaration_list> "}"
+ *                      | "struct" "{" <struct_declaration_list> "}"
+ */
+struct_specifier
+    "struct" .and struct_specifier_1 .and optional_space .and lbrace .error LBRACE_EXPECTED .and
+    struct_declaration_list .and rbrace .emit FIELD_NONE;
+struct_specifier_1
+    struct_specifier_2 .or .true .emit '\0';
+struct_specifier_2
+    space .and identifier;
+
+/*
+ * <struct_declaration_list> ::= <struct_declaration>
+ *                             | <struct_declaration_list> <struct_declaration>
+ */
+struct_declaration_list
+    struct_declaration .and .loop struct_declaration .emit FIELD_NEXT;
+
+/*
+ * <struct_declaration> ::= <type_specifier> <struct_declarator_list> ";"
+ */
+struct_declaration
+    struct_declaration_nospace .or struct_declaration_space;
+struct_declaration_space
+    type_specifier_space .and space .and struct_declarator_list .and semicolon .emit FIELD_NONE;
+struct_declaration_nospace
+    type_specifier_nospace .and struct_declarator_list .and semicolon .emit FIELD_NONE;
+
+/*
+ * <struct_declarator_list> ::= <struct_declarator>
+ *                            | <struct_declarator_list> "," <struct_declarator>
+ */
+struct_declarator_list
+    struct_declarator .and .loop struct_declarator_list_1 .emit FIELD_NEXT;
+struct_declarator_list_1
+    comma .and struct_declarator;
+
+/*
+ * <struct_declarator> ::= <identifier>
+ *                       | <identifier> "[" <constant_expression> "]"
+ */
+struct_declarator
+    identifier .and struct_declarator_1;
+struct_declarator_1
+    struct_declarator_2 .emit FIELD_ARRAY .or .true .emit FIELD_NONE;
+struct_declarator_2
+    lbracket .and constant_expression .and rbracket;
+
+/*
+ * <initializer> ::= <assignment_expression>
+ */
+initializer
+    assignment_expression .and .true .emit OP_END;
+
+/*
+ * <declaration_statement> ::= <declaration>
+ */
+declaration_statement
+    declaration;
+
+/*
+ * <statement> ::= <compound_statement>
+ *               | <simple_statement>
+ */
+statement
+    compound_statement .or simple_statement;
+statement_space
+    compound_statement .or statement_space_1;
+statement_space_1
+    space .and simple_statement;
+
+/*
+ * <simple_statement> ::= <__asm_statement>
+ *                      | <selection_statement>
+ *                      | <iteration_statement>
+ *                      | <jump_statement>
+ *                      | <expression_statement>
+ *                      | <declaration_statement>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows use of __asm statements
+ */
+simple_statement
+    .if (parsing_builtin != 0) __asm_statement .emit OP_ASM .or
+    selection_statement .or
+    iteration_statement .or
+    precision_stmt .emit OP_PRECISION .or
+    jump_statement .or
+    expression_statement .emit OP_EXPRESSION .or
+    declaration_statement .emit OP_DECLARE;
+
+/*
+ * <compound_statement> ::= "{" "}"
+ *                        | "{" <statement_list> "}"
+ */
+compound_statement
+    compound_statement_1 .emit OP_BLOCK_BEGIN_NEW_SCOPE .and .true .emit OP_END;
+compound_statement_1
+    compound_statement_2 .or compound_statement_3;
+compound_statement_2
+    lbrace .and rbrace;
+compound_statement_3
+    lbrace .and statement_list .and rbrace;
+
+/*
+ * <compound_statement_no_new_scope> ::= "{" "}"
+ *                                     | "{" <statement_list> "}"
+ */
+compound_statement_no_new_scope
+    compound_statement_no_new_scope_1 .emit OP_BLOCK_BEGIN_NO_NEW_SCOPE .and .true .emit OP_END;
+compound_statement_no_new_scope_1
+    compound_statement_no_new_scope_2 .or compound_statement_no_new_scope_3;
+compound_statement_no_new_scope_2
+    lbrace .and rbrace;
+compound_statement_no_new_scope_3
+    lbrace .and statement_list .and rbrace;
+
+
+/*
+ * <statement_list> ::= <statement>
+ *                    | <statement_list> <statement>
+ */
+statement_list
+    statement .and .loop statement;
+
+/*
+ * <expression_statement> ::= ";"
+ *                          | <expression> ";"
+ */
+expression_statement
+    expression_statement_1 .or expression_statement_2;
+expression_statement_1
+    semicolon .emit OP_PUSH_VOID .emit OP_END;
+expression_statement_2
+    expression .and semicolon .emit OP_END;
+
+/*
+ * <selection_statement> ::= "if" "(" <expression> ")" <selection_rest_statement>
+ */
+selection_statement
+    "if" .emit OP_IF .and lparen .error LPAREN_EXPECTED .and expression .and
+    rparen .error RPAREN_EXPECTED .emit OP_END .and selection_rest_statement;
+
+/*
+ * <selection_rest_statement> ::= <statement> "else" <statement>
+ *                              | <statement>
+ */
+selection_rest_statement
+    statement .and selection_rest_statement_1;
+selection_rest_statement_1
+    selection_rest_statement_2 .or .true .emit OP_EXPRESSION .emit OP_PUSH_VOID .emit OP_END;
+selection_rest_statement_2
+    "else" .and optional_space .and statement;
+
+/*
+ * <condition> ::= <expression>
+ *               | <fully_specified_type> <identifier> "=" <initializer>
+ *
+ * note: if <condition_1> is executed, the emit format must
+ * match <declaration> emit format
+ */
+condition
+    condition_1 .emit OP_DECLARE .emit DECLARATION_INIT_DECLARATOR_LIST .or
+    condition_3 .emit OP_EXPRESSION;
+condition_1
+    condition_1_nospace .or condition_1_space;
+condition_1_nospace
+    fully_specified_type_nospace .and condition_2;
+condition_1_space
+    fully_specified_type_space .and space .and condition_2;
+condition_2
+    identifier .emit VARIABLE_IDENTIFIER .and equals .emit VARIABLE_INITIALIZER .and
+    initializer .and .true .emit DECLARATOR_NONE;
+condition_3
+    expression .and .true .emit OP_END;
+
+/*
+ * <iteration_statement> ::= "while" "(" <condition> ")" <statement>
+ *                         | "do" <statement> "while" "(" <expression> ")" ";"
+ *                         | "for" "(" <for_init_statement> <for_rest_statement> ")" <statement>
+ */
+iteration_statement
+    iteration_statement_1 .or iteration_statement_2 .or iteration_statement_3;
+iteration_statement_1
+    "while" .emit OP_WHILE .and lparen .error LPAREN_EXPECTED .and condition .and
+    rparen .error RPAREN_EXPECTED .and statement;
+iteration_statement_2
+    "do" .emit OP_DO .and statement_space .and "while" .and lparen .error LPAREN_EXPECTED .and
+    expression .and rparen .error RPAREN_EXPECTED .emit OP_END .and semicolon;
+iteration_statement_3
+    "for" .emit OP_FOR .and lparen .error LPAREN_EXPECTED .and for_init_statement .and
+    for_rest_statement .and rparen .error RPAREN_EXPECTED .and statement;
+
+/*
+ * <for_init_statement> ::= <expression_statement>
+ *                        | <declaration_statement>
+ */
+for_init_statement
+    expression_statement .emit OP_EXPRESSION .or declaration_statement .emit OP_DECLARE;
+
+/*
+ * <conditionopt> ::= <condition>
+ *                  | ""
+ *
+ * note: <conditionopt> is used only by "for" statement.
+ * if <condition> is ommitted, parser simulates default behaviour,
+ * that is simulates "true" expression
+ */
+conditionopt
+    condition .or
+    .true .emit OP_EXPRESSION .emit OP_PUSH_BOOL .emit 2 .emit '1' .emit '\0' .emit OP_END;
+
+/*
+ * <for_rest_statement> ::= <conditionopt> ";"
+ *                        | <conditionopt> ";" <expression>
+ */
+for_rest_statement
+    conditionopt .and semicolon .and for_rest_statement_1;
+for_rest_statement_1
+    for_rest_statement_2 .or .true .emit OP_PUSH_VOID .emit OP_END;
+for_rest_statement_2
+    expression .and .true .emit OP_END;
+
+/*
+ * <jump_statement> ::= "continue" ";"
+ *                    | "break" ";"
+ *                    | "return" ";"
+ *                    | "return" <expression> ";"
+ *                    | "discard" ";" // Fragment shader only.
+ */
+jump_statement
+    jump_statement_1 .or jump_statement_2 .or jump_statement_3 .or jump_statement_4 .or
+    .if (shader_type == 1) jump_statement_5;
+jump_statement_1
+    "continue" .and semicolon .emit OP_CONTINUE;
+jump_statement_2
+    "break" .and semicolon .emit OP_BREAK;
+jump_statement_3
+    "return" .emit OP_RETURN .and optional_space .and expression .and semicolon .emit OP_END;
+jump_statement_4
+    "return" .emit OP_RETURN .and semicolon .emit OP_PUSH_VOID .emit OP_END;
+jump_statement_5
+    "discard" .and semicolon .emit OP_DISCARD;
+
+/*
+ * <__asm_statement> ::= "__asm" <identifier> <asm_arguments> ";"
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows __asm statements
+ */
+__asm_statement
+    "__asm" .and space .and identifier .and space .and asm_arguments .and semicolon .emit OP_END;
+
+/*
+ * <asm_arguments> ::= <asm_argument>
+ *                   | <asm_arguments> "," <asm_argument>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows __asm statements
+ */
+asm_arguments
+    asm_argument .and .true .emit OP_END .and .loop asm_arguments_1;
+asm_arguments_1
+    comma .and asm_argument .and .true .emit OP_END;
+
+/*
+ * <asm_argument> ::= <variable_identifier>
+ *                  | <floatconstant>
+ *
+ * note: this is an extension to the standard language specification.
+ * normally slang disallows __asm statements
+ */
+asm_argument
+    var_with_field .or
+    variable_identifier .or
+    floatconstant;
+
+var_with_field
+    variable_identifier .and dot .and field_selection .emit OP_FIELD;
+
+
+/*
+ * <translation_unit> ::= <external_declaration>
+ *                      | <translation_unit> <external_declaration>
+ */
+translation_unit
+    optional_space .emit REVISION .and external_declaration .error INVALID_EXTERNAL_DECLARATION .and
+    .loop external_declaration .and optional_space .and
+    '\0' .error INVALID_EXTERNAL_DECLARATION .emit EXTERNAL_NULL;
+
+
+/*
+ * <external_declaration> ::= <function_definition>
+ *                          | <declaration>
+ */
+external_declaration
+    precision_stmt .emit DEFAULT_PRECISION .or
+    function_definition .emit EXTERNAL_FUNCTION_DEFINITION .or
+    invariant_stmt .emit INVARIANT_STMT .or
+    declaration .emit EXTERNAL_DECLARATION;
+
+
+/*
+ * <precision_stmt> ::= "precision" <precision> <prectype>
+ */
+precision_stmt
+    "precision" .and space .and precision .error INVALID_PRECISION .and space .and prectype .error INVALID_PRECISION_TYPE .and semicolon;
+
+/*
+ * <precision> ::= "lowp"
+ *               | "mediump"
+ *               | "highp"
+ */
+precision
+    "lowp" .emit PRECISION_LOW .or
+    "mediump" .emit PRECISION_MEDIUM .or
+    "highp" .emit PRECISION_HIGH;
+
+/*
+ * <prectype> ::= "int"
+ *              | "float"
+ *              | "a sampler type"
+ */
+prectype
+    "int" .emit TYPE_SPECIFIER_INT .or
+    "float" .emit TYPE_SPECIFIER_FLOAT .or
+    "sampler1D" .emit TYPE_SPECIFIER_SAMPLER1D .or
+    "sampler2D" .emit TYPE_SPECIFIER_SAMPLER2D .or
+    "sampler3D" .emit TYPE_SPECIFIER_SAMPLER3D .or
+    "samplerCube" .emit TYPE_SPECIFIER_SAMPLERCUBE .or
+    "sampler1DShadow" .emit TYPE_SPECIFIER_SAMPLER1DSHADOW .or
+    "sampler2DShadow" .emit TYPE_SPECIFIER_SAMPLER2DSHADOW .or
+    "sampler2DRect" .emit TYPE_SPECIFIER_SAMPLER2DRECT .or
+    "sampler2DRectShadow" .emit TYPE_SPECIFIER_SAMPLER2DRECTSHADOW;
+
+
+/*
+ * <invariant_stmt> ::= "invariant" identifier;
+ */
+invariant_stmt
+    "invariant" .and space .and identifier .and semicolon;
+
+
+/*
+ * <function_definition> :: <function_prototype> <compound_statement_no_new_scope>
+ */
+function_definition
+    function_prototype .and compound_statement_no_new_scope;
+
+
+
+/*
+ * helper rules, not part of the official language syntax
+ */
+
+digit_oct
+    '0'-'7';
+
+digit_dec
+    '0'-'9';
+
+digit_hex
+    '0'-'9' .or 'A'-'F' .or 'a'-'f';
+
+id_character_first
+    'a'-'z' .or 'A'-'Z' .or '_';
+
+id_character_next
+    id_character_first .or digit_dec;
+
+identifier
+    id_character_first .emit * .and .loop id_character_next .emit * .and .true .emit '\0';
+
+float
+    float_1 .or float_2 .or float_3;
+float_1
+    float_fractional_constant .and float_optional_exponent_part .and optional_f_suffix;
+float_2
+    float_digit_sequence .and .true .emit '\0' .and float_exponent_part .and optional_f_suffix;
+float_3
+    float_digit_sequence .and .true .emit '\0' .and 'f' .emit '\0';
+
+float_fractional_constant
+    float_fractional_constant_1 .or float_fractional_constant_2 .or float_fractional_constant_3;
+float_fractional_constant_1
+    float_digit_sequence .and '.' .and float_digit_sequence;
+float_fractional_constant_2
+    float_digit_sequence .and '.' .and .true .emit '\0';
+float_fractional_constant_3
+    '.' .emit '\0' .and float_digit_sequence;
+
+float_optional_exponent_part
+    float_exponent_part .or .true .emit '\0';
+
+float_digit_sequence
+    digit_dec .emit * .and .loop digit_dec .emit * .and .true .emit '\0';
+
+float_exponent_part
+    float_exponent_part_1 .or float_exponent_part_2;
+float_exponent_part_1
+    'e' .and float_optional_sign .and float_digit_sequence;
+float_exponent_part_2
+    'E' .and float_optional_sign .and float_digit_sequence;
+
+float_optional_sign
+    float_sign .or .true;
+
+float_sign
+    '+' .or '-' .emit '-';
+
+optional_f_suffix
+    'f' .or .true;
+
+
+integer
+    integer_hex .or integer_oct .or integer_dec;
+
+integer_hex
+    '0' .and integer_hex_1 .emit 0x10 .and digit_hex .emit * .and .loop digit_hex .emit * .and
+    .true .emit '\0';
+integer_hex_1
+    'x' .or 'X';
+
+integer_oct
+    '0' .emit 8 .emit * .and .loop digit_oct .emit * .and .true .emit '\0';
+
+integer_dec
+    digit_dec .emit 10 .emit * .and .loop digit_dec .emit * .and .true .emit '\0';
+
+boolean
+    "true" .emit 2 .emit '1' .emit '\0' .or
+    "false" .emit 2 .emit '0' .emit '\0';
+
+type_name
+    identifier;
+
+field_selection
+    identifier;
+
+floatconstant
+    float .emit OP_PUSH_FLOAT;
+
+intconstant
+    integer .emit OP_PUSH_INT;
+
+boolconstant
+    boolean .emit OP_PUSH_BOOL;
+
+optional_space
+    .loop single_space;
+
+space
+    single_space .and .loop single_space;
+
+single_space
+    white_char .or c_style_comment_block .or cpp_style_comment_block;
+
+white_char
+    ' ' .or '\t' .or new_line .or '\v' .or '\f';
+
+new_line
+    cr_lf .or lf_cr .or '\n' .or '\r';
+
+cr_lf
+    '\r' .and '\n';
+
+lf_cr
+    '\n' .and '\r';
+
+c_style_comment_block
+    '/' .and '*' .and c_style_comment_rest;
+
+c_style_comment_rest
+    .loop c_style_comment_char_no_star .and c_style_comment_rest_1;
+c_style_comment_rest_1
+    c_style_comment_end .or c_style_comment_rest_2;
+c_style_comment_rest_2
+    '*' .and c_style_comment_rest;
+
+c_style_comment_char_no_star
+    '\x2B'-'\xFF' .or '\x01'-'\x29';
+
+c_style_comment_end
+    '*' .and '/';
+
+cpp_style_comment_block
+    '/' .and '/' .and cpp_style_comment_block_1;
+cpp_style_comment_block_1
+    cpp_style_comment_block_2 .or cpp_style_comment_block_3;
+cpp_style_comment_block_2
+    .loop cpp_style_comment_char .and new_line;
+cpp_style_comment_block_3
+    .loop cpp_style_comment_char;
+
+cpp_style_comment_char
+    '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
+
+/* lexical rules */
+
+/*ampersand
+    optional_space .and '&' .and optional_space;*/
+
+ampersandampersand
+    optional_space .and '&' .and '&' .and optional_space;
+
+/*ampersandequals
+    optional_space .and '&' .and '=' .and optional_space;*/
+
+/*bar
+    optional_space .and '|' .and optional_space;*/
+
+barbar
+    optional_space .and '|' .and '|' .and optional_space;
+
+/*barequals
+    optional_space .and '|' .and '=' .and optional_space;*/
+
+bang
+    optional_space .and '!' .and optional_space;
+
+bangequals
+    optional_space .and '!' .and '=' .and optional_space;
+
+/*caret
+    optional_space .and '^' .and optional_space;*/
+
+caretcaret
+    optional_space .and '^' .and '^' .and optional_space;
+
+/*caretequals
+    optional_space .and '^' .and '=' .and optional_space;*/
+
+colon
+    optional_space .and ':' .and optional_space;
+
+comma
+    optional_space .and ',' .and optional_space;
+
+dot
+    optional_space .and '.' .and optional_space;
+
+equals
+    optional_space .and '=' .and optional_space;
+
+equalsequals
+    optional_space .and '=' .and '=' .and optional_space;
+
+greater
+    optional_space .and '>' .and optional_space;
+
+greaterequals
+    optional_space .and '>' .and '=' .and optional_space;
+
+/*greatergreater
+    optional_space .and '>' .and '>' .and optional_space;*/
+
+/*greatergreaterequals
+    optional_space .and '>' .and '>' .and '=' .and optional_space;*/
+
+lbrace
+    optional_space .and '{' .and optional_space;
+
+lbracket
+    optional_space .and '[' .and optional_space;
+
+less
+    optional_space .and '<' .and optional_space;
+
+lessequals
+    optional_space .and '<' .and '=' .and optional_space;
+
+/*lessless
+    optional_space .and '<' .and '<' .and optional_space;*/
+
+/*lesslessequals
+    optional_space .and '<' .and '<' .and '=' .and optional_space;*/
+
+lparen
+    optional_space .and '(' .and optional_space;
+
+minus
+    optional_space .and '-' .and optional_space;
+
+minusequals
+    optional_space .and '-' .and '=' .and optional_space;
+
+minusminus
+    optional_space .and '-' .and '-' .and optional_space;
+
+/*percent
+    optional_space .and '%' .and optional_space;*/
+
+/*percentequals
+    optional_space .and '%' .and '=' .and optional_space;*/
+
+plus
+    optional_space .and '+' .and optional_space;
+
+plusequals
+    optional_space .and '+' .and '=' .and optional_space;
+
+plusplus
+    optional_space .and '+' .and '+' .and optional_space;
+
+question
+    optional_space .and '?' .and optional_space;
+
+rbrace
+    optional_space .and '}' .and optional_space;
+
+rbracket
+    optional_space .and ']' .and optional_space;
+
+rparen
+    optional_space .and ')' .and optional_space;
+
+semicolon
+    optional_space .and ';' .and optional_space;
+
+slash
+    optional_space .and '/' .and optional_space;
+
+slashequals
+    optional_space .and '/' .and '=' .and optional_space;
+
+star
+    optional_space .and '*' .and optional_space;
+
+starequals
+    optional_space .and '*' .and '=' .and optional_space;
+
+/*tilde
+    optional_space .and '~' .and optional_space;*/
+
+/* string rules - these are used internally by the parser when parsing quoted strings */
+
+.string string_lexer;
+
+string_lexer
+    lex_first_identifier_character .and .loop lex_next_identifier_character;
+
+lex_first_identifier_character
+    'a'-'z' .or 'A'-'Z' .or '_';
+
+lex_next_identifier_character
+    'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_';
+
+/* error rules - these are used by error messages */
+
+err_token
+    '~' .or '`' .or '!' .or '@' .or '#' .or '$' .or '%' .or '^' .or '&' .or '*' .or '(' .or ')' .or
+    '-' .or '+' .or '=' .or '|' .or '\\' .or '[' .or ']' .or '{' .or '}' .or ':' .or ';' .or '"' .or
+    '\'' .or '<' .or ',' .or '>' .or '.' .or '/' .or '?' .or err_identifier;
+
+err_identifier
+    id_character_first .and .loop id_character_next;
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_shader_syn.h b/mesalib/src/mesa/shader/slang/library/slang_shader_syn.h
new file mode 100644
index 000000000..6a382970e
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_shader_syn.h
@@ -0,0 +1,866 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE .syn FILE */
+
+".syntax translation_unit;\n"
+".emtcode REVISION 5\n"
+".emtcode EXTERNAL_NULL 0\n"
+".emtcode EXTERNAL_FUNCTION_DEFINITION 1\n"
+".emtcode EXTERNAL_DECLARATION 2\n"
+".emtcode DEFAULT_PRECISION 3\n"
+".emtcode INVARIANT_STMT 4\n"
+".emtcode PRECISION_DEFAULT 0\n"
+".emtcode PRECISION_LOW 1\n"
+".emtcode PRECISION_MEDIUM 2\n"
+".emtcode PRECISION_HIGH 3\n"
+".emtcode DECLARATION_FUNCTION_PROTOTYPE 1\n"
+".emtcode DECLARATION_INIT_DECLARATOR_LIST 2\n"
+".emtcode FUNCTION_ORDINARY 0\n"
+".emtcode FUNCTION_CONSTRUCTOR 1\n"
+".emtcode FUNCTION_OPERATOR 2\n"
+".emtcode FUNCTION_CALL_NONARRAY 0\n"
+".emtcode FUNCTION_CALL_ARRAY 1\n"
+".emtcode OPERATOR_ADDASSIGN 1\n"
+".emtcode OPERATOR_SUBASSIGN 2\n"
+".emtcode OPERATOR_MULASSIGN 3\n"
+".emtcode OPERATOR_DIVASSIGN 4\n"
+".emtcode OPERATOR_LOGICALXOR 11\n"
+".emtcode OPERATOR_LESS 15\n"
+".emtcode OPERATOR_GREATER 16\n"
+".emtcode OPERATOR_LESSEQUAL 17\n"
+".emtcode OPERATOR_GREATEREQUAL 18\n"
+".emtcode OPERATOR_MULTIPLY 21\n"
+".emtcode OPERATOR_DIVIDE 22\n"
+".emtcode OPERATOR_INCREMENT 24\n"
+".emtcode OPERATOR_DECREMENT 25\n"
+".emtcode OPERATOR_PLUS 26\n"
+".emtcode OPERATOR_MINUS 27\n"
+".emtcode OPERATOR_NOT 29\n"
+".emtcode DECLARATOR_NONE 0\n"
+".emtcode DECLARATOR_NEXT 1\n"
+".emtcode VARIABLE_NONE 0\n"
+".emtcode VARIABLE_IDENTIFIER 1\n"
+".emtcode VARIABLE_INITIALIZER 2\n"
+".emtcode VARIABLE_ARRAY_EXPLICIT 3\n"
+".emtcode VARIABLE_ARRAY_UNKNOWN 4\n"
+".emtcode TYPE_QUALIFIER_NONE 0\n"
+".emtcode TYPE_QUALIFIER_CONST 1\n"
+".emtcode TYPE_QUALIFIER_ATTRIBUTE 2\n"
+".emtcode TYPE_QUALIFIER_VARYING 3\n"
+".emtcode TYPE_QUALIFIER_UNIFORM 4\n"
+".emtcode TYPE_QUALIFIER_FIXEDOUTPUT 5\n"
+".emtcode TYPE_QUALIFIER_FIXEDINPUT 6\n"
+".emtcode TYPE_VARIANT 90\n"
+".emtcode TYPE_INVARIANT 91\n"
+".emtcode TYPE_CENTER 95\n"
+".emtcode TYPE_CENTROID 96\n"
+".emtcode TYPE_SPECIFIER_VOID 0\n"
+".emtcode TYPE_SPECIFIER_BOOL 1\n"
+".emtcode TYPE_SPECIFIER_BVEC2 2\n"
+".emtcode TYPE_SPECIFIER_BVEC3 3\n"
+".emtcode TYPE_SPECIFIER_BVEC4 4\n"
+".emtcode TYPE_SPECIFIER_INT 5\n"
+".emtcode TYPE_SPECIFIER_IVEC2 6\n"
+".emtcode TYPE_SPECIFIER_IVEC3 7\n"
+".emtcode TYPE_SPECIFIER_IVEC4 8\n"
+".emtcode TYPE_SPECIFIER_FLOAT 9\n"
+".emtcode TYPE_SPECIFIER_VEC2 10\n"
+".emtcode TYPE_SPECIFIER_VEC3 11\n"
+".emtcode TYPE_SPECIFIER_VEC4 12\n"
+".emtcode TYPE_SPECIFIER_MAT2 13\n"
+".emtcode TYPE_SPECIFIER_MAT3 14\n"
+".emtcode TYPE_SPECIFIER_MAT4 15\n"
+".emtcode TYPE_SPECIFIER_SAMPLER1D 16\n"
+".emtcode TYPE_SPECIFIER_SAMPLER2D 17\n"
+".emtcode TYPE_SPECIFIER_SAMPLER3D 18\n"
+".emtcode TYPE_SPECIFIER_SAMPLERCUBE 19\n"
+".emtcode TYPE_SPECIFIER_SAMPLER1DSHADOW 20\n"
+".emtcode TYPE_SPECIFIER_SAMPLER2DSHADOW 21\n"
+".emtcode TYPE_SPECIFIER_SAMPLER2DRECT 22\n"
+".emtcode TYPE_SPECIFIER_SAMPLER2DRECTSHADOW 23\n"
+".emtcode TYPE_SPECIFIER_STRUCT 24\n"
+".emtcode TYPE_SPECIFIER_TYPENAME 25\n"
+".emtcode TYPE_SPECIFIER_MAT23 26\n"
+".emtcode TYPE_SPECIFIER_MAT32 27\n"
+".emtcode TYPE_SPECIFIER_MAT24 28\n"
+".emtcode TYPE_SPECIFIER_MAT42 29\n"
+".emtcode TYPE_SPECIFIER_MAT34 30\n"
+".emtcode TYPE_SPECIFIER_MAT43 31\n"
+".emtcode TYPE_SPECIFIER_NONARRAY 0\n"
+".emtcode TYPE_SPECIFIER_ARRAY 1\n"
+".emtcode FIELD_NONE 0\n"
+".emtcode FIELD_NEXT 1\n"
+".emtcode FIELD_ARRAY 2\n"
+".emtcode OP_END 0\n"
+".emtcode OP_BLOCK_BEGIN_NO_NEW_SCOPE 1\n"
+".emtcode OP_BLOCK_BEGIN_NEW_SCOPE 2\n"
+".emtcode OP_DECLARE 3\n"
+".emtcode OP_ASM 4\n"
+".emtcode OP_BREAK 5\n"
+".emtcode OP_CONTINUE 6\n"
+".emtcode OP_DISCARD 7\n"
+".emtcode OP_RETURN 8\n"
+".emtcode OP_EXPRESSION 9\n"
+".emtcode OP_IF 10\n"
+".emtcode OP_WHILE 11\n"
+".emtcode OP_DO 12\n"
+".emtcode OP_FOR 13\n"
+".emtcode OP_PUSH_VOID 14\n"
+".emtcode OP_PUSH_BOOL 15\n"
+".emtcode OP_PUSH_INT 16\n"
+".emtcode OP_PUSH_FLOAT 17\n"
+".emtcode OP_PUSH_IDENTIFIER 18\n"
+".emtcode OP_SEQUENCE 19\n"
+".emtcode OP_ASSIGN 20\n"
+".emtcode OP_ADDASSIGN 21\n"
+".emtcode OP_SUBASSIGN 22\n"
+".emtcode OP_MULASSIGN 23\n"
+".emtcode OP_DIVASSIGN 24\n"
+".emtcode OP_SELECT 31\n"
+".emtcode OP_LOGICALOR 32\n"
+".emtcode OP_LOGICALXOR 33\n"
+".emtcode OP_LOGICALAND 34\n"
+".emtcode OP_EQUAL 38\n"
+".emtcode OP_NOTEQUAL 39\n"
+".emtcode OP_LESS 40\n"
+".emtcode OP_GREATER 41\n"
+".emtcode OP_LESSEQUAL 42\n"
+".emtcode OP_GREATEREQUAL 43\n"
+".emtcode OP_ADD 46\n"
+".emtcode OP_SUBTRACT 47\n"
+".emtcode OP_MULTIPLY 48\n"
+".emtcode OP_DIVIDE 49\n"
+".emtcode OP_PREINCREMENT 51\n"
+".emtcode OP_PREDECREMENT 52\n"
+".emtcode OP_PLUS 53\n"
+".emtcode OP_MINUS 54\n"
+".emtcode OP_NOT 56\n"
+".emtcode OP_SUBSCRIPT 57\n"
+".emtcode OP_CALL 58\n"
+".emtcode OP_FIELD 59\n"
+".emtcode OP_POSTINCREMENT 60\n"
+".emtcode OP_POSTDECREMENT 61\n"
+".emtcode OP_PRECISION 62\n"
+".emtcode OP_METHOD 63\n"
+".emtcode PARAM_QUALIFIER_IN 0\n"
+".emtcode PARAM_QUALIFIER_OUT 1\n"
+".emtcode PARAM_QUALIFIER_INOUT 2\n"
+".emtcode PARAMETER_NONE 0\n"
+".emtcode PARAMETER_NEXT 1\n"
+".emtcode PARAMETER_ARRAY_NOT_PRESENT 0\n"
+".emtcode PARAMETER_ARRAY_PRESENT 1\n"
+".errtext INVALID_EXTERNAL_DECLARATION \"2001: Syntax error.\"\n"
+".errtext INVALID_OPERATOR_OVERRIDE \"2002: Invalid operator override.\"\n"
+".errtext LBRACE_EXPECTED \"2003: '{' expected but '$err_token$' found.\"\n"
+".errtext LPAREN_EXPECTED \"2004: '(' expected but '$err_token$' found.\"\n"
+".errtext RPAREN_EXPECTED \"2005: ')' expected but '$err_token$' found.\"\n"
+".errtext INVALID_PRECISION \"2006: Invalid precision specifier '$err_token$'.\"\n"
+".errtext INVALID_PRECISION_TYPE \"2007: Invalid precision type '$err_token$'.\"\n"
+".regbyte parsing_builtin 0\n"
+".regbyte shader_type 0\n"
+"variable_identifier\n"
+" identifier .emit OP_PUSH_IDENTIFIER;\n"
+"primary_expression\n"
+" floatconstant .or boolconstant .or intconstant .or variable_identifier .or primary_expression_1;\n"
+"primary_expression_1\n"
+" lparen .and expression .and rparen;\n"
+"postfix_expression\n"
+" postfix_expression_1 .and .loop postfix_expression_2;\n"
+"postfix_expression_1\n"
+" function_call .or primary_expression;\n"
+"postfix_expression_2\n"
+" postfix_expression_3 .or postfix_expression_4 .or\n"
+" plusplus .emit OP_POSTINCREMENT .or\n"
+" minusminus .emit OP_POSTDECREMENT;\n"
+"postfix_expression_3\n"
+" lbracket .and integer_expression .and rbracket .emit OP_SUBSCRIPT;\n"
+"postfix_expression_4\n"
+" dot .and field_selection .emit OP_FIELD;\n"
+"integer_expression\n"
+" expression;\n"
+"function_call\n"
+" function_call_or_method;\n"
+"function_call_or_method\n"
+" regular_function_call .or method_call;\n"
+"method_call\n"
+" identifier .emit OP_METHOD .and dot .and function_call_generic .and .true .emit OP_END;\n"
+"regular_function_call\n"
+" function_call_generic .emit OP_CALL .and .true .emit OP_END;\n"
+"function_call_generic\n"
+" function_call_generic_1 .or function_call_generic_2;\n"
+"function_call_generic_1\n"
+" function_call_header_with_parameters .and rparen .error RPAREN_EXPECTED;\n"
+"function_call_generic_2\n"
+" function_call_header_no_parameters .and rparen .error RPAREN_EXPECTED;\n"
+"function_call_header_no_parameters\n"
+" function_call_header .and function_call_header_no_parameters_1;\n"
+"function_call_header_no_parameters_1\n"
+" \"void\" .or .true;\n"
+"function_call_header_with_parameters\n"
+" function_call_header .and assignment_expression .and .true .emit OP_END .and\n"
+" .loop function_call_header_with_parameters_1;\n"
+"function_call_header_with_parameters_1\n"
+" comma .and assignment_expression .and .true .emit OP_END;\n"
+"function_call_header\n"
+" function_identifier .and lparen;\n"
+"function_identifier\n"
+" identifier .and function_identifier_opt_array;\n"
+"function_identifier_opt_array\n"
+" function_identifier_array .emit FUNCTION_CALL_ARRAY .or\n"
+" .true .emit FUNCTION_CALL_NONARRAY;\n"
+"function_identifier_array\n"
+" lbracket .and constant_expression .and rbracket;\n"
+"unary_expression\n"
+" postfix_expression .or unary_expression_1 .or unary_expression_2 .or unary_expression_3 .or\n"
+" unary_expression_4 .or unary_expression_5;\n"
+"unary_expression_1\n"
+" plusplus .and unary_expression .and .true .emit OP_PREINCREMENT;\n"
+"unary_expression_2\n"
+" minusminus .and unary_expression .and .true .emit OP_PREDECREMENT;\n"
+"unary_expression_3\n"
+" plus .and unary_expression .and .true .emit OP_PLUS;\n"
+"unary_expression_4\n"
+" minus .and unary_expression .and .true .emit OP_MINUS;\n"
+"unary_expression_5\n"
+" bang .and unary_expression .and .true .emit OP_NOT;\n"
+"multiplicative_expression\n"
+" unary_expression .and .loop multiplicative_expression_1;\n"
+"multiplicative_expression_1\n"
+" multiplicative_expression_2 .or multiplicative_expression_3;\n"
+"multiplicative_expression_2\n"
+" star .and unary_expression .and .true .emit OP_MULTIPLY;\n"
+"multiplicative_expression_3\n"
+" slash .and unary_expression .and .true .emit OP_DIVIDE;\n"
+"additive_expression\n"
+" multiplicative_expression .and .loop additive_expression_1;\n"
+"additive_expression_1\n"
+" additive_expression_2 .or additive_expression_3;\n"
+"additive_expression_2\n"
+" plus .and multiplicative_expression .and .true .emit OP_ADD;\n"
+"additive_expression_3\n"
+" minus .and multiplicative_expression .and .true .emit OP_SUBTRACT;\n"
+"shift_expression\n"
+" additive_expression;\n"
+"relational_expression\n"
+" shift_expression .and .loop relational_expression_1;\n"
+"relational_expression_1\n"
+" relational_expression_2 .or relational_expression_3 .or relational_expression_4 .or\n"
+" relational_expression_5;\n"
+"relational_expression_2\n"
+" lessequals .and shift_expression .and .true .emit OP_LESSEQUAL;\n"
+"relational_expression_3\n"
+" greaterequals .and shift_expression .and .true .emit OP_GREATEREQUAL;\n"
+"relational_expression_4\n"
+" less .and shift_expression .and .true .emit OP_LESS;\n"
+"relational_expression_5\n"
+" greater .and shift_expression .and .true .emit OP_GREATER;\n"
+"equality_expression\n"
+" relational_expression .and .loop equality_expression_1;\n"
+"equality_expression_1\n"
+" equality_expression_2 .or equality_expression_3;\n"
+"equality_expression_2\n"
+" equalsequals .and relational_expression .and .true .emit OP_EQUAL;\n"
+"equality_expression_3\n"
+" bangequals .and relational_expression .and .true .emit OP_NOTEQUAL;\n"
+"and_expression\n"
+" equality_expression;\n"
+"exclusive_or_expression\n"
+" and_expression;\n"
+"inclusive_or_expression\n"
+" exclusive_or_expression;\n"
+"logical_and_expression\n"
+" inclusive_or_expression .and .loop logical_and_expression_1;\n"
+"logical_and_expression_1\n"
+" ampersandampersand .and inclusive_or_expression .and .true .emit OP_LOGICALAND;\n"
+"logical_xor_expression\n"
+" logical_and_expression .and .loop logical_xor_expression_1;\n"
+"logical_xor_expression_1\n"
+" caretcaret .and logical_and_expression .and .true .emit OP_LOGICALXOR;\n"
+"logical_or_expression\n"
+" logical_xor_expression .and .loop logical_or_expression_1;\n"
+"logical_or_expression_1\n"
+" barbar .and logical_xor_expression .and .true .emit OP_LOGICALOR;\n"
+"conditional_expression\n"
+" logical_or_expression .and .loop conditional_expression_1;\n"
+"conditional_expression_1\n"
+" question .and expression .and colon .and conditional_expression .and .true .emit OP_SELECT;\n"
+"assignment_expression\n"
+" assignment_expression_1 .or assignment_expression_2 .or assignment_expression_3 .or\n"
+" assignment_expression_4 .or assignment_expression_5 .or conditional_expression;\n"
+"assignment_expression_1\n"
+" unary_expression .and equals .and assignment_expression .and .true .emit OP_ASSIGN;\n"
+"assignment_expression_2\n"
+" unary_expression .and starequals .and assignment_expression .and .true .emit OP_MULASSIGN;\n"
+"assignment_expression_3\n"
+" unary_expression .and slashequals .and assignment_expression .and .true .emit OP_DIVASSIGN;\n"
+"assignment_expression_4\n"
+" unary_expression .and plusequals .and assignment_expression .and .true .emit OP_ADDASSIGN;\n"
+"assignment_expression_5\n"
+" unary_expression .and minusequals .and assignment_expression .and .true .emit OP_SUBASSIGN;\n"
+"expression\n"
+" assignment_expression .and .loop expression_1;\n"
+"expression_1\n"
+" comma .and assignment_expression .and .true .emit OP_SEQUENCE;\n"
+"constant_expression\n"
+" conditional_expression .and .true .emit OP_END;\n"
+"declaration\n"
+" declaration_1 .or declaration_2;\n"
+"declaration_1\n"
+" function_prototype .emit DECLARATION_FUNCTION_PROTOTYPE .and semicolon;\n"
+"declaration_2\n"
+" init_declarator_list .emit DECLARATION_INIT_DECLARATOR_LIST .and semicolon;\n"
+"function_prototype\n"
+" function_prototype_1 .or function_prototype_2;\n"
+"function_prototype_1\n"
+" function_header .and \"void\" .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE;\n"
+"function_prototype_2\n"
+" function_declarator .and rparen .error RPAREN_EXPECTED .emit PARAMETER_NONE;\n"
+"function_declarator\n"
+" function_header_with_parameters .or function_header;\n"
+"function_header_with_parameters\n"
+" function_header .and parameter_declaration .and .loop function_header_with_parameters_1;\n"
+"function_header_with_parameters_1\n"
+" comma .and parameter_declaration;\n"
+"function_header\n"
+" function_header_nospace .or function_header_space;\n"
+"function_header_space\n"
+" fully_specified_type_space .and space .and function_decl_identifier .and lparen;\n"
+"function_header_nospace\n"
+" fully_specified_type_nospace .and function_decl_identifier .and lparen;\n"
+"function_decl_identifier\n"
+" .if (parsing_builtin != 0) __operator .emit FUNCTION_OPERATOR .or\n"
+" .if (parsing_builtin != 0) \"__constructor\" .emit FUNCTION_CONSTRUCTOR .or\n"
+" identifier .emit FUNCTION_ORDINARY;\n"
+"__operator\n"
+" \"__operator\" .and overriden_operator .error INVALID_OPERATOR_OVERRIDE;\n"
+"overriden_operator\n"
+" plusplus .emit OPERATOR_INCREMENT .or\n"
+" plusequals .emit OPERATOR_ADDASSIGN .or\n"
+" plus .emit OPERATOR_PLUS .or\n"
+" minusminus .emit OPERATOR_DECREMENT .or\n"
+" minusequals .emit OPERATOR_SUBASSIGN .or\n"
+" minus .emit OPERATOR_MINUS .or\n"
+" bang .emit OPERATOR_NOT .or\n"
+" starequals .emit OPERATOR_MULASSIGN .or\n"
+" star .emit OPERATOR_MULTIPLY .or\n"
+" slashequals .emit OPERATOR_DIVASSIGN .or\n"
+" slash .emit OPERATOR_DIVIDE .or\n"
+" lessequals .emit OPERATOR_LESSEQUAL .or\n"
+" \n"
+" \n"
+" less .emit OPERATOR_LESS .or\n"
+" greaterequals .emit OPERATOR_GREATEREQUAL .or\n"
+" \n"
+" \n"
+" greater .emit OPERATOR_GREATER .or\n"
+" \n"
+" \n"
+" \n"
+" \n"
+" \n"
+" \n"
+" \n"
+" \n"
+" caretcaret .emit OPERATOR_LOGICALXOR ;\n"
+"parameter_declarator\n"
+" parameter_declarator_nospace .or parameter_declarator_space;\n"
+"parameter_declarator_nospace\n"
+" type_specifier_nospace .and identifier .and parameter_declarator_1;\n"
+"parameter_declarator_space\n"
+" type_specifier_space .and space .and identifier .and parameter_declarator_1;\n"
+"parameter_declarator_1\n"
+" parameter_declarator_2 .emit PARAMETER_ARRAY_PRESENT .or\n"
+" .true .emit PARAMETER_ARRAY_NOT_PRESENT;\n"
+"parameter_declarator_2\n"
+" lbracket .and constant_expression .and rbracket;\n"
+"parameter_declaration\n"
+" parameter_declaration_1 .emit PARAMETER_NEXT;\n"
+"parameter_declaration_1\n"
+" parameter_declaration_2 .or parameter_declaration_3;\n"
+"parameter_declaration_2\n"
+" type_qualifier .and space .and parameter_qualifier .and parameter_declaration_4;\n"
+"parameter_declaration_3\n"
+" parameter_qualifier .emit TYPE_QUALIFIER_NONE .and parameter_declaration_4;\n"
+"parameter_declaration_4\n"
+" parameter_declaration_optprec .and parameter_declaration_rest;\n"
+"parameter_declaration_optprec\n"
+" parameter_declaration_prec .or .true .emit PRECISION_DEFAULT;\n"
+"parameter_declaration_prec\n"
+" precision .and space;\n"
+"parameter_declaration_rest\n"
+" parameter_declarator .or parameter_type_specifier;\n"
+"parameter_qualifier\n"
+" parameter_qualifier_1 .or .true .emit PARAM_QUALIFIER_IN;\n"
+"parameter_qualifier_1\n"
+" parameter_qualifier_2 .and space;\n"
+"parameter_qualifier_2\n"
+" \"in\" .emit PARAM_QUALIFIER_IN .or\n"
+" \"out\" .emit PARAM_QUALIFIER_OUT .or\n"
+" \"inout\" .emit PARAM_QUALIFIER_INOUT;\n"
+"parameter_type_specifier\n"
+" parameter_type_specifier_1 .and .true .emit '\\0' .and parameter_type_specifier_2;\n"
+"parameter_type_specifier_1\n"
+" type_specifier_nospace .or type_specifier_space;\n"
+"parameter_type_specifier_2\n"
+" parameter_type_specifier_3 .emit PARAMETER_ARRAY_PRESENT .or\n"
+" .true .emit PARAMETER_ARRAY_NOT_PRESENT;\n"
+"parameter_type_specifier_3\n"
+" lbracket .and constant_expression .and rbracket;\n"
+"init_declarator_list\n"
+" single_declaration .and .loop init_declarator_list_1 .emit DECLARATOR_NEXT .and\n"
+" .true .emit DECLARATOR_NONE;\n"
+"init_declarator_list_1\n"
+" comma .and identifier .emit VARIABLE_IDENTIFIER .and init_declarator_list_2;\n"
+"init_declarator_list_2\n"
+" init_declarator_list_3 .or init_declarator_list_4 .or .true .emit VARIABLE_NONE;\n"
+"init_declarator_list_3\n"
+" equals .and initializer .emit VARIABLE_INITIALIZER;\n"
+"init_declarator_list_4\n"
+" lbracket .and init_declarator_list_5 .and rbracket;\n"
+"init_declarator_list_5\n"
+" constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN;\n"
+"single_declaration\n"
+" single_declaration_nospace .or single_declaration_space;\n"
+"single_declaration_space\n"
+" fully_specified_type_space .and single_declaration_space_1;\n"
+"single_declaration_nospace\n"
+" fully_specified_type_nospace .and single_declaration_nospace_1;\n"
+"single_declaration_space_1\n"
+" single_declaration_space_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE;\n"
+"single_declaration_nospace_1\n"
+" single_declaration_nospace_2 .emit VARIABLE_IDENTIFIER .or .true .emit VARIABLE_NONE;\n"
+"single_declaration_space_2\n"
+" space .and identifier .and single_declaration_3;\n"
+"single_declaration_nospace_2\n"
+" identifier .and single_declaration_3;\n"
+"single_declaration_3\n"
+" single_declaration_4 .or single_declaration_5 .or .true .emit VARIABLE_NONE;\n"
+"single_declaration_4\n"
+" equals .and initializer .emit VARIABLE_INITIALIZER;\n"
+"single_declaration_5\n"
+" lbracket .and single_declaration_6 .and rbracket;\n"
+"single_declaration_6\n"
+" constant_expression .emit VARIABLE_ARRAY_EXPLICIT .or .true .emit VARIABLE_ARRAY_UNKNOWN;\n"
+"fully_specified_type_space\n"
+" fully_specified_type_optinvariant .and fully_specified_type_optcentroid .and fully_specified_type_optqual .and fully_specified_type_optprec .and type_specifier_space;\n"
+"fully_specified_type_nospace\n"
+" fully_specified_type_optinvariant .and fully_specified_type_optcentroid .and fully_specified_type_optqual .and fully_specified_type_optprec .and type_specifier_nospace;\n"
+"fully_specified_type_optinvariant\n"
+" fully_specified_type_invariant .or .true .emit TYPE_VARIANT;\n"
+"fully_specified_type_invariant\n"
+" invariant_qualifier .and space;\n"
+"fully_specified_type_optcentroid\n"
+" fully_specified_type_centroid .or .true .emit TYPE_CENTER;\n"
+"fully_specified_type_centroid\n"
+" centroid_qualifier .and space;\n"
+"fully_specified_type_optqual\n"
+" fully_specified_type_qual .or .true .emit TYPE_QUALIFIER_NONE;\n"
+"fully_specified_type_qual\n"
+" type_qualifier .and space;\n"
+"fully_specified_type_optprec\n"
+" fully_specified_type_prec .or .true .emit PRECISION_DEFAULT;\n"
+"fully_specified_type_prec\n"
+" precision .and space;\n"
+"invariant_qualifier\n"
+" \"invariant\" .emit TYPE_INVARIANT;\n"
+"centroid_qualifier\n"
+" \"centroid\" .emit TYPE_CENTROID;\n"
+"type_qualifier\n"
+" \"const\" .emit TYPE_QUALIFIER_CONST .or\n"
+" .if (shader_type == 2) \"attribute\" .emit TYPE_QUALIFIER_ATTRIBUTE .or\n"
+" \"varying\" .emit TYPE_QUALIFIER_VARYING .or\n"
+" \"uniform\" .emit TYPE_QUALIFIER_UNIFORM .or\n"
+" .if (parsing_builtin != 0) \"__fixed_output\" .emit TYPE_QUALIFIER_FIXEDOUTPUT .or\n"
+" .if (parsing_builtin != 0) \"__fixed_input\" .emit TYPE_QUALIFIER_FIXEDINPUT;\n"
+"type_specifier_nonarray_space\n"
+" \"void\" .emit TYPE_SPECIFIER_VOID .or\n"
+" \"float\" .emit TYPE_SPECIFIER_FLOAT .or\n"
+" \"int\" .emit TYPE_SPECIFIER_INT .or\n"
+" \"bool\" .emit TYPE_SPECIFIER_BOOL .or\n"
+" \"vec2\" .emit TYPE_SPECIFIER_VEC2 .or\n"
+" \"vec3\" .emit TYPE_SPECIFIER_VEC3 .or\n"
+" \"vec4\" .emit TYPE_SPECIFIER_VEC4 .or\n"
+" \"bvec2\" .emit TYPE_SPECIFIER_BVEC2 .or\n"
+" \"bvec3\" .emit TYPE_SPECIFIER_BVEC3 .or\n"
+" \"bvec4\" .emit TYPE_SPECIFIER_BVEC4 .or\n"
+" \"ivec2\" .emit TYPE_SPECIFIER_IVEC2 .or\n"
+" \"ivec3\" .emit TYPE_SPECIFIER_IVEC3 .or\n"
+" \"ivec4\" .emit TYPE_SPECIFIER_IVEC4 .or\n"
+" \"mat2\" .emit TYPE_SPECIFIER_MAT2 .or\n"
+" \"mat3\" .emit TYPE_SPECIFIER_MAT3 .or\n"
+" \"mat4\" .emit TYPE_SPECIFIER_MAT4 .or\n"
+" \"mat2x3\" .emit TYPE_SPECIFIER_MAT23 .or\n"
+" \"mat3x2\" .emit TYPE_SPECIFIER_MAT32 .or\n"
+" \"mat2x4\" .emit TYPE_SPECIFIER_MAT24 .or\n"
+" \"mat4x2\" .emit TYPE_SPECIFIER_MAT42 .or\n"
+" \"mat3x4\" .emit TYPE_SPECIFIER_MAT34 .or\n"
+" \"mat4x3\" .emit TYPE_SPECIFIER_MAT43 .or\n"
+" \"sampler1D\" .emit TYPE_SPECIFIER_SAMPLER1D .or\n"
+" \"sampler2D\" .emit TYPE_SPECIFIER_SAMPLER2D .or\n"
+" \"sampler3D\" .emit TYPE_SPECIFIER_SAMPLER3D .or\n"
+" \"samplerCube\" .emit TYPE_SPECIFIER_SAMPLERCUBE .or\n"
+" \"sampler1DShadow\" .emit TYPE_SPECIFIER_SAMPLER1DSHADOW .or\n"
+" \"sampler2DShadow\" .emit TYPE_SPECIFIER_SAMPLER2DSHADOW .or\n"
+" \"sampler2DRect\" .emit TYPE_SPECIFIER_SAMPLER2DRECT .or\n"
+" \"sampler2DRectShadow\" .emit TYPE_SPECIFIER_SAMPLER2DRECTSHADOW .or\n"
+" type_name .emit TYPE_SPECIFIER_TYPENAME;\n"
+"type_specifier_nonarray_nospace\n"
+" struct_specifier .emit TYPE_SPECIFIER_STRUCT;\n"
+"type_specifier_nonarray\n"
+" type_specifier_nonarray_nospace .or type_specifier_nonarray_space;\n"
+"type_specifier_space\n"
+" type_specifier_nonarray_space .and .true .emit TYPE_SPECIFIER_NONARRAY;\n"
+"type_specifier_nospace\n"
+" type_specifier_nospace_array .or type_specifier_nospace_1;\n"
+"type_specifier_nospace_1\n"
+" type_specifier_nonarray_nospace .and .true .emit TYPE_SPECIFIER_NONARRAY;\n"
+"type_specifier_nospace_array\n"
+" type_specifier_nonarray .and lbracket .emit TYPE_SPECIFIER_ARRAY .and constant_expression .and rbracket;\n"
+"struct_specifier\n"
+" \"struct\" .and struct_specifier_1 .and optional_space .and lbrace .error LBRACE_EXPECTED .and\n"
+" struct_declaration_list .and rbrace .emit FIELD_NONE;\n"
+"struct_specifier_1\n"
+" struct_specifier_2 .or .true .emit '\\0';\n"
+"struct_specifier_2\n"
+" space .and identifier;\n"
+"struct_declaration_list\n"
+" struct_declaration .and .loop struct_declaration .emit FIELD_NEXT;\n"
+"struct_declaration\n"
+" struct_declaration_nospace .or struct_declaration_space;\n"
+"struct_declaration_space\n"
+" type_specifier_space .and space .and struct_declarator_list .and semicolon .emit FIELD_NONE;\n"
+"struct_declaration_nospace\n"
+" type_specifier_nospace .and struct_declarator_list .and semicolon .emit FIELD_NONE;\n"
+"struct_declarator_list\n"
+" struct_declarator .and .loop struct_declarator_list_1 .emit FIELD_NEXT;\n"
+"struct_declarator_list_1\n"
+" comma .and struct_declarator;\n"
+"struct_declarator\n"
+" identifier .and struct_declarator_1;\n"
+"struct_declarator_1\n"
+" struct_declarator_2 .emit FIELD_ARRAY .or .true .emit FIELD_NONE;\n"
+"struct_declarator_2\n"
+" lbracket .and constant_expression .and rbracket;\n"
+"initializer\n"
+" assignment_expression .and .true .emit OP_END;\n"
+"declaration_statement\n"
+" declaration;\n"
+"statement\n"
+" compound_statement .or simple_statement;\n"
+"statement_space\n"
+" compound_statement .or statement_space_1;\n"
+"statement_space_1\n"
+" space .and simple_statement;\n"
+"simple_statement\n"
+" .if (parsing_builtin != 0) __asm_statement .emit OP_ASM .or\n"
+" selection_statement .or\n"
+" iteration_statement .or\n"
+" precision_stmt .emit OP_PRECISION .or\n"
+" jump_statement .or\n"
+" expression_statement .emit OP_EXPRESSION .or\n"
+" declaration_statement .emit OP_DECLARE;\n"
+"compound_statement\n"
+" compound_statement_1 .emit OP_BLOCK_BEGIN_NEW_SCOPE .and .true .emit OP_END;\n"
+"compound_statement_1\n"
+" compound_statement_2 .or compound_statement_3;\n"
+"compound_statement_2\n"
+" lbrace .and rbrace;\n"
+"compound_statement_3\n"
+" lbrace .and statement_list .and rbrace;\n"
+"compound_statement_no_new_scope\n"
+" compound_statement_no_new_scope_1 .emit OP_BLOCK_BEGIN_NO_NEW_SCOPE .and .true .emit OP_END;\n"
+"compound_statement_no_new_scope_1\n"
+" compound_statement_no_new_scope_2 .or compound_statement_no_new_scope_3;\n"
+"compound_statement_no_new_scope_2\n"
+" lbrace .and rbrace;\n"
+"compound_statement_no_new_scope_3\n"
+" lbrace .and statement_list .and rbrace;\n"
+"statement_list\n"
+" statement .and .loop statement;\n"
+"expression_statement\n"
+" expression_statement_1 .or expression_statement_2;\n"
+"expression_statement_1\n"
+" semicolon .emit OP_PUSH_VOID .emit OP_END;\n"
+"expression_statement_2\n"
+" expression .and semicolon .emit OP_END;\n"
+"selection_statement\n"
+" \"if\" .emit OP_IF .and lparen .error LPAREN_EXPECTED .and expression .and\n"
+" rparen .error RPAREN_EXPECTED .emit OP_END .and selection_rest_statement;\n"
+"selection_rest_statement\n"
+" statement .and selection_rest_statement_1;\n"
+"selection_rest_statement_1\n"
+" selection_rest_statement_2 .or .true .emit OP_EXPRESSION .emit OP_PUSH_VOID .emit OP_END;\n"
+"selection_rest_statement_2\n"
+" \"else\" .and optional_space .and statement;\n"
+"condition\n"
+" condition_1 .emit OP_DECLARE .emit DECLARATION_INIT_DECLARATOR_LIST .or\n"
+" condition_3 .emit OP_EXPRESSION;\n"
+"condition_1\n"
+" condition_1_nospace .or condition_1_space;\n"
+"condition_1_nospace\n"
+" fully_specified_type_nospace .and condition_2;\n"
+"condition_1_space\n"
+" fully_specified_type_space .and space .and condition_2;\n"
+"condition_2\n"
+" identifier .emit VARIABLE_IDENTIFIER .and equals .emit VARIABLE_INITIALIZER .and\n"
+" initializer .and .true .emit DECLARATOR_NONE;\n"
+"condition_3\n"
+" expression .and .true .emit OP_END;\n"
+"iteration_statement\n"
+" iteration_statement_1 .or iteration_statement_2 .or iteration_statement_3;\n"
+"iteration_statement_1\n"
+" \"while\" .emit OP_WHILE .and lparen .error LPAREN_EXPECTED .and condition .and\n"
+" rparen .error RPAREN_EXPECTED .and statement;\n"
+"iteration_statement_2\n"
+" \"do\" .emit OP_DO .and statement_space .and \"while\" .and lparen .error LPAREN_EXPECTED .and\n"
+" expression .and rparen .error RPAREN_EXPECTED .emit OP_END .and semicolon;\n"
+"iteration_statement_3\n"
+" \"for\" .emit OP_FOR .and lparen .error LPAREN_EXPECTED .and for_init_statement .and\n"
+" for_rest_statement .and rparen .error RPAREN_EXPECTED .and statement;\n"
+"for_init_statement\n"
+" expression_statement .emit OP_EXPRESSION .or declaration_statement .emit OP_DECLARE;\n"
+"conditionopt\n"
+" condition .or\n"
+" .true .emit OP_EXPRESSION .emit OP_PUSH_BOOL .emit 2 .emit '1' .emit '\\0' .emit OP_END;\n"
+"for_rest_statement\n"
+" conditionopt .and semicolon .and for_rest_statement_1;\n"
+"for_rest_statement_1\n"
+" for_rest_statement_2 .or .true .emit OP_PUSH_VOID .emit OP_END;\n"
+"for_rest_statement_2\n"
+" expression .and .true .emit OP_END;\n"
+"jump_statement\n"
+" jump_statement_1 .or jump_statement_2 .or jump_statement_3 .or jump_statement_4 .or\n"
+" .if (shader_type == 1) jump_statement_5;\n"
+"jump_statement_1\n"
+" \"continue\" .and semicolon .emit OP_CONTINUE;\n"
+"jump_statement_2\n"
+" \"break\" .and semicolon .emit OP_BREAK;\n"
+"jump_statement_3\n"
+" \"return\" .emit OP_RETURN .and optional_space .and expression .and semicolon .emit OP_END;\n"
+"jump_statement_4\n"
+" \"return\" .emit OP_RETURN .and semicolon .emit OP_PUSH_VOID .emit OP_END;\n"
+"jump_statement_5\n"
+" \"discard\" .and semicolon .emit OP_DISCARD;\n"
+"__asm_statement\n"
+" \"__asm\" .and space .and identifier .and space .and asm_arguments .and semicolon .emit OP_END;\n"
+"asm_arguments\n"
+" asm_argument .and .true .emit OP_END .and .loop asm_arguments_1;\n"
+"asm_arguments_1\n"
+" comma .and asm_argument .and .true .emit OP_END;\n"
+"asm_argument\n"
+" var_with_field .or\n"
+" variable_identifier .or\n"
+" floatconstant;\n"
+"var_with_field\n"
+" variable_identifier .and dot .and field_selection .emit OP_FIELD;\n"
+"translation_unit\n"
+" optional_space .emit REVISION .and external_declaration .error INVALID_EXTERNAL_DECLARATION .and\n"
+" .loop external_declaration .and optional_space .and\n"
+" '\\0' .error INVALID_EXTERNAL_DECLARATION .emit EXTERNAL_NULL;\n"
+"external_declaration\n"
+" precision_stmt .emit DEFAULT_PRECISION .or\n"
+" function_definition .emit EXTERNAL_FUNCTION_DEFINITION .or\n"
+" invariant_stmt .emit INVARIANT_STMT .or\n"
+" declaration .emit EXTERNAL_DECLARATION;\n"
+"precision_stmt\n"
+" \"precision\" .and space .and precision .error INVALID_PRECISION .and space .and prectype .error INVALID_PRECISION_TYPE .and semicolon;\n"
+"precision\n"
+" \"lowp\" .emit PRECISION_LOW .or\n"
+" \"mediump\" .emit PRECISION_MEDIUM .or\n"
+" \"highp\" .emit PRECISION_HIGH;\n"
+"prectype\n"
+" \"int\" .emit TYPE_SPECIFIER_INT .or\n"
+" \"float\" .emit TYPE_SPECIFIER_FLOAT .or\n"
+" \"sampler1D\" .emit TYPE_SPECIFIER_SAMPLER1D .or\n"
+" \"sampler2D\" .emit TYPE_SPECIFIER_SAMPLER2D .or\n"
+" \"sampler3D\" .emit TYPE_SPECIFIER_SAMPLER3D .or\n"
+" \"samplerCube\" .emit TYPE_SPECIFIER_SAMPLERCUBE .or\n"
+" \"sampler1DShadow\" .emit TYPE_SPECIFIER_SAMPLER1DSHADOW .or\n"
+" \"sampler2DShadow\" .emit TYPE_SPECIFIER_SAMPLER2DSHADOW .or\n"
+" \"sampler2DRect\" .emit TYPE_SPECIFIER_SAMPLER2DRECT .or\n"
+" \"sampler2DRectShadow\" .emit TYPE_SPECIFIER_SAMPLER2DRECTSHADOW;\n"
+"invariant_stmt\n"
+" \"invariant\" .and space .and identifier .and semicolon;\n"
+"function_definition\n"
+" function_prototype .and compound_statement_no_new_scope;\n"
+"digit_oct\n"
+" '0'-'7';\n"
+"digit_dec\n"
+" '0'-'9';\n"
+"digit_hex\n"
+" '0'-'9' .or 'A'-'F' .or 'a'-'f';\n"
+"id_character_first\n"
+" 'a'-'z' .or 'A'-'Z' .or '_';\n"
+"id_character_next\n"
+" id_character_first .or digit_dec;\n"
+"identifier\n"
+" id_character_first .emit * .and .loop id_character_next .emit * .and .true .emit '\\0';\n"
+"float\n"
+" float_1 .or float_2 .or float_3;\n"
+"float_1\n"
+" float_fractional_constant .and float_optional_exponent_part .and optional_f_suffix;\n"
+"float_2\n"
+" float_digit_sequence .and .true .emit '\\0' .and float_exponent_part .and optional_f_suffix;\n"
+"float_3\n"
+" float_digit_sequence .and .true .emit '\\0' .and 'f' .emit '\\0';\n"
+"float_fractional_constant\n"
+" float_fractional_constant_1 .or float_fractional_constant_2 .or float_fractional_constant_3;\n"
+"float_fractional_constant_1\n"
+" float_digit_sequence .and '.' .and float_digit_sequence;\n"
+"float_fractional_constant_2\n"
+" float_digit_sequence .and '.' .and .true .emit '\\0';\n"
+"float_fractional_constant_3\n"
+" '.' .emit '\\0' .and float_digit_sequence;\n"
+"float_optional_exponent_part\n"
+" float_exponent_part .or .true .emit '\\0';\n"
+"float_digit_sequence\n"
+" digit_dec .emit * .and .loop digit_dec .emit * .and .true .emit '\\0';\n"
+"float_exponent_part\n"
+" float_exponent_part_1 .or float_exponent_part_2;\n"
+"float_exponent_part_1\n"
+" 'e' .and float_optional_sign .and float_digit_sequence;\n"
+"float_exponent_part_2\n"
+" 'E' .and float_optional_sign .and float_digit_sequence;\n"
+"float_optional_sign\n"
+" float_sign .or .true;\n"
+"float_sign\n"
+" '+' .or '-' .emit '-';\n"
+"optional_f_suffix\n"
+" 'f' .or .true;\n"
+"integer\n"
+" integer_hex .or integer_oct .or integer_dec;\n"
+"integer_hex\n"
+" '0' .and integer_hex_1 .emit 0x10 .and digit_hex .emit * .and .loop digit_hex .emit * .and\n"
+" .true .emit '\\0';\n"
+"integer_hex_1\n"
+" 'x' .or 'X';\n"
+"integer_oct\n"
+" '0' .emit 8 .emit * .and .loop digit_oct .emit * .and .true .emit '\\0';\n"
+"integer_dec\n"
+" digit_dec .emit 10 .emit * .and .loop digit_dec .emit * .and .true .emit '\\0';\n"
+"boolean\n"
+" \"true\" .emit 2 .emit '1' .emit '\\0' .or\n"
+" \"false\" .emit 2 .emit '0' .emit '\\0';\n"
+"type_name\n"
+" identifier;\n"
+"field_selection\n"
+" identifier;\n"
+"floatconstant\n"
+" float .emit OP_PUSH_FLOAT;\n"
+"intconstant\n"
+" integer .emit OP_PUSH_INT;\n"
+"boolconstant\n"
+" boolean .emit OP_PUSH_BOOL;\n"
+"optional_space\n"
+" .loop single_space;\n"
+"space\n"
+" single_space .and .loop single_space;\n"
+"single_space\n"
+" white_char .or c_style_comment_block .or cpp_style_comment_block;\n"
+"white_char\n"
+" ' ' .or '\\t' .or new_line .or '\\v' .or '\\f';\n"
+"new_line\n"
+" cr_lf .or lf_cr .or '\\n' .or '\\r';\n"
+"cr_lf\n"
+" '\\r' .and '\\n';\n"
+"lf_cr\n"
+" '\\n' .and '\\r';\n"
+"c_style_comment_block\n"
+" '/' .and '*' .and c_style_comment_rest;\n"
+"c_style_comment_rest\n"
+" .loop c_style_comment_char_no_star .and c_style_comment_rest_1;\n"
+"c_style_comment_rest_1\n"
+" c_style_comment_end .or c_style_comment_rest_2;\n"
+"c_style_comment_rest_2\n"
+" '*' .and c_style_comment_rest;\n"
+"c_style_comment_char_no_star\n"
+" '\\x2B'-'\\xFF' .or '\\x01'-'\\x29';\n"
+"c_style_comment_end\n"
+" '*' .and '/';\n"
+"cpp_style_comment_block\n"
+" '/' .and '/' .and cpp_style_comment_block_1;\n"
+"cpp_style_comment_block_1\n"
+" cpp_style_comment_block_2 .or cpp_style_comment_block_3;\n"
+"cpp_style_comment_block_2\n"
+" .loop cpp_style_comment_char .and new_line;\n"
+"cpp_style_comment_block_3\n"
+" .loop cpp_style_comment_char;\n"
+"cpp_style_comment_char\n"
+" '\\x0E'-'\\xFF' .or '\\x01'-'\\x09' .or '\\x0B'-'\\x0C';\n"
+"ampersandampersand\n"
+" optional_space .and '&' .and '&' .and optional_space;\n"
+"barbar\n"
+" optional_space .and '|' .and '|' .and optional_space;\n"
+"bang\n"
+" optional_space .and '!' .and optional_space;\n"
+"bangequals\n"
+" optional_space .and '!' .and '=' .and optional_space;\n"
+"caretcaret\n"
+" optional_space .and '^' .and '^' .and optional_space;\n"
+"colon\n"
+" optional_space .and ':' .and optional_space;\n"
+"comma\n"
+" optional_space .and ',' .and optional_space;\n"
+"dot\n"
+" optional_space .and '.' .and optional_space;\n"
+"equals\n"
+" optional_space .and '=' .and optional_space;\n"
+"equalsequals\n"
+" optional_space .and '=' .and '=' .and optional_space;\n"
+"greater\n"
+" optional_space .and '>' .and optional_space;\n"
+"greaterequals\n"
+" optional_space .and '>' .and '=' .and optional_space;\n"
+"lbrace\n"
+" optional_space .and '{' .and optional_space;\n"
+"lbracket\n"
+" optional_space .and '[' .and optional_space;\n"
+"less\n"
+" optional_space .and '<' .and optional_space;\n"
+"lessequals\n"
+" optional_space .and '<' .and '=' .and optional_space;\n"
+"lparen\n"
+" optional_space .and '(' .and optional_space;\n"
+"minus\n"
+" optional_space .and '-' .and optional_space;\n"
+"minusequals\n"
+" optional_space .and '-' .and '=' .and optional_space;\n"
+"minusminus\n"
+" optional_space .and '-' .and '-' .and optional_space;\n"
+"plus\n"
+" optional_space .and '+' .and optional_space;\n"
+"plusequals\n"
+" optional_space .and '+' .and '=' .and optional_space;\n"
+"plusplus\n"
+" optional_space .and '+' .and '+' .and optional_space;\n"
+"question\n"
+" optional_space .and '?' .and optional_space;\n"
+"rbrace\n"
+" optional_space .and '}' .and optional_space;\n"
+"rbracket\n"
+" optional_space .and ']' .and optional_space;\n"
+"rparen\n"
+" optional_space .and ')' .and optional_space;\n"
+"semicolon\n"
+" optional_space .and ';' .and optional_space;\n"
+"slash\n"
+" optional_space .and '/' .and optional_space;\n"
+"slashequals\n"
+" optional_space .and '/' .and '=' .and optional_space;\n"
+"star\n"
+" optional_space .and '*' .and optional_space;\n"
+"starequals\n"
+" optional_space .and '*' .and '=' .and optional_space;\n"
+".string string_lexer;\n"
+"string_lexer\n"
+" lex_first_identifier_character .and .loop lex_next_identifier_character;\n"
+"lex_first_identifier_character\n"
+" 'a'-'z' .or 'A'-'Z' .or '_';\n"
+"lex_next_identifier_character\n"
+" 'a'-'z' .or 'A'-'Z' .or '0'-'9' .or '_';\n"
+"err_token\n"
+" '~' .or '`' .or '!' .or '@' .or '#' .or '$' .or '%' .or '^' .or '&' .or '*' .or '(' .or ')' .or\n"
+" '-' .or '+' .or '=' .or '|' .or '\\\\' .or '[' .or ']' .or '{' .or '}' .or ':' .or ';' .or '\"' .or\n"
+" '\\'' .or '<' .or ',' .or '>' .or '.' .or '/' .or '?' .or err_identifier;\n"
+"err_identifier\n"
+" id_character_first .and .loop id_character_next;\n"
+""
diff --git a/mesalib/src/mesa/shader/slang/library/slang_version.syn b/mesalib/src/mesa/shader/slang/library/slang_version.syn
new file mode 100644
index 000000000..aaf8bef34
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_version.syn
@@ -0,0 +1,118 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.3
+ *
+ * Copyright (C) 2005  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_version.syn
+ * slang #version directive syntax
+ * \author Michal Krol
+ */
+
+.syntax version_directive;
+
+version_directive
+	version_directive_1 .and .loop version_directive_2;
+version_directive_1
+	prior_optional_spaces .and optional_version_directive .and .true .emit $;
+version_directive_2
+	prior_optional_spaces .and version_directive_body .and .true .emit $;
+
+optional_version_directive
+	version_directive_body .or .true .emit 10 .emit 1;
+
+version_directive_body
+	'#' .and optional_space .and "version" .and space .and version_number .and optional_space .and
+	new_line;
+
+version_number
+	version_number_110;
+
+version_number_110
+	leading_zeroes .and "110" .emit 10 .emit 1;
+
+leading_zeroes
+	.loop zero;
+
+zero
+	'0';
+
+space
+    single_space .and .loop single_space;
+
+optional_space
+    .loop single_space;
+
+single_space
+    ' ' .or '\t';
+
+prior_optional_spaces
+	.loop prior_space;
+
+prior_space
+	c_style_comment_block .or cpp_style_comment_block .or space .or new_line;
+
+c_style_comment_block
+    '/' .and '*' .and c_style_comment_rest;
+
+c_style_comment_rest
+    .loop c_style_comment_char_no_star .and c_style_comment_rest_1;
+c_style_comment_rest_1
+    c_style_comment_end .or c_style_comment_rest_2;
+c_style_comment_rest_2
+    '*' .and c_style_comment_rest;
+
+c_style_comment_char_no_star
+    '\x2B'-'\xFF' .or '\x01'-'\x29';
+
+c_style_comment_end
+    '*' .and '/';
+
+cpp_style_comment_block
+    '/' .and '/' .and cpp_style_comment_block_1;
+cpp_style_comment_block_1
+    cpp_style_comment_block_2 .or cpp_style_comment_block_3;
+cpp_style_comment_block_2
+    .loop cpp_style_comment_char .and new_line;
+cpp_style_comment_block_3
+    .loop cpp_style_comment_char;
+
+cpp_style_comment_char
+    '\x0E'-'\xFF' .or '\x01'-'\x09' .or '\x0B'-'\x0C';
+
+new_line
+    cr_lf .or lf_cr .or '\n' .or '\r';
+
+cr_lf
+    '\r' .and '\n';
+
+lf_cr
+	'\n' .and '\r';
+
+.string __string_filter;
+
+__string_filter
+    .loop __identifier_char;
+
+__identifier_char
+    'a'-'z' .or 'A'-'Z' .or '_' .or '0'-'9';
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_vertex_builtin.gc b/mesalib/src/mesa/shader/slang/library/slang_vertex_builtin.gc
new file mode 100644
index 000000000..9ad5f3542
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_vertex_builtin.gc
@@ -0,0 +1,190 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+//
+// From Shader Spec, ver. 1.10, rev. 59
+//
+
+__fixed_output vec4 gl_Position;
+__fixed_output float gl_PointSize;
+__fixed_output vec4 gl_ClipVertex;
+
+attribute vec4 gl_Color;
+attribute vec4 gl_SecondaryColor;
+attribute vec3 gl_Normal;
+attribute vec4 gl_Vertex;
+attribute vec4 gl_MultiTexCoord0;
+attribute vec4 gl_MultiTexCoord1;
+attribute vec4 gl_MultiTexCoord2;
+attribute vec4 gl_MultiTexCoord3;
+attribute vec4 gl_MultiTexCoord4;
+attribute vec4 gl_MultiTexCoord5;
+attribute vec4 gl_MultiTexCoord6;
+attribute vec4 gl_MultiTexCoord7;
+attribute float gl_FogCoord;
+
+varying vec4 gl_FrontColor;
+varying vec4 gl_BackColor;
+varying vec4 gl_FrontSecondaryColor;
+varying vec4 gl_BackSecondaryColor;
+varying vec4 gl_TexCoord[gl_MaxTextureCoords];
+varying float gl_FogFragCoord;
+
+//
+// Geometric Functions
+//
+
+vec4 ftransform()
+{
+   __retVal = gl_ModelViewProjectionMatrix[0] * gl_Vertex.xxxx
+            + gl_ModelViewProjectionMatrix[1] * gl_Vertex.yyyy
+            + gl_ModelViewProjectionMatrix[2] * gl_Vertex.zzzz
+            + gl_ModelViewProjectionMatrix[3] * gl_Vertex.wwww;
+}
+
+
+
+//
+// 8.7 Texture Lookup Functions
+// These are pretty much identical to the ones in slang_fragment_builtin.gc
+// When used in a vertex program, the texture sample instructions should not
+// be using a LOD term so it's effectively zero.  Adding 'lod' to that does
+// what we want.
+//
+
+vec4 texture1DLod(const sampler1D sampler, const float coord, const float lod)
+{
+   vec4 coord4;
+   coord4.x = coord;
+   coord4.w = lod;
+   __asm vec4_tex_1d_bias __retVal, sampler, coord4;
+}
+
+vec4 texture1DProjLod(const sampler1D sampler, const vec2 coord, const float lod)
+{
+   vec4 pcoord;
+   pcoord.x = coord.x / coord.y;
+   pcoord.w = lod;
+   __asm vec4_tex_1d_bias __retVal, sampler, pcoord;
+}
+
+vec4 texture1DProjLod(const sampler1D sampler, const vec4 coord, const float lod)
+{
+   vec4 pcoord;
+   pcoord.x = coord.x / coord.z;
+   pcoord.w = lod;
+   __asm vec4_tex_1d_bias __retVal, sampler, pcoord;
+}
+
+
+
+vec4 texture2DLod(const sampler2D sampler, const vec2 coord, const float lod)
+{
+   vec4 coord4;
+   coord4.xy = coord.xy;
+   coord4.w = lod;
+   __asm vec4_tex_2d_bias __retVal, sampler, coord4;
+}
+
+vec4 texture2DProjLod(const sampler2D sampler, const vec3 coord, const float lod)
+{
+   vec4 pcoord;
+   pcoord.xy = coord.xy / coord.z;
+   pcoord.w = lod;
+   __asm vec4_tex_2d_bias __retVal, sampler, pcoord;
+}
+
+vec4 texture2DProjLod(const sampler2D sampler, const vec4 coord, const float lod)
+{
+   vec4 pcoord;
+   pcoord.xy = coord.xy / coord.z;
+   pcoord.w = lod;
+   __asm vec4_tex_2d_bias __retVal, sampler, pcoord;
+}
+
+
+vec4 texture3DLod(const sampler3D sampler, const vec3 coord, const float lod)
+{
+   vec4 coord4;
+   coord4.xyz = coord.xyz;
+   coord4.w = lod;
+   __asm vec4_tex_3d_bias __retVal, sampler, coord4;
+}
+
+vec4 texture3DProjLod(const sampler3D sampler, const vec4 coord, const float lod)
+{
+   // do projection here (there's no vec4_tex_3d_bias_proj instruction)
+   vec4 pcoord;
+   pcoord.xyz = coord.xyz / coord.w;
+   pcoord.w = lod;
+   __asm vec4_tex_3d_bias __retVal, sampler, pcoord;
+}
+
+
+vec4 textureCubeLod(const samplerCube sampler, const vec3 coord, const float lod)
+{
+   vec4 coord4;
+   coord4.xyz = coord;
+   coord4.w = lod;
+   __asm vec4_tex_cube __retVal, sampler, coord4;
+}
+
+
+vec4 shadow1DLod(const sampler1DShadow sampler, const vec3 coord, const float lod)
+{
+   vec4 coord4;
+   coord4.xyz = coord;
+   coord4.w = lod;
+   __asm vec4_tex_1d_bias_shadow __retVal, sampler, coord4;
+}
+
+vec4 shadow1DProjLod(const sampler1DShadow sampler, const vec4 coord,
+                     const float lod)
+{
+   vec4 pcoord;
+   pcoord.x = coord.x / coord.w;
+   pcoord.z = coord.z;
+   pcoord.w = lod;
+   __asm vec4_tex_1d_bias_shadow __retVal, sampler, pcoord;
+}
+
+
+vec4 shadow2DLod(const sampler2DShadow sampler, const vec3 coord, const float lod)
+{
+   vec4 coord4;
+   coord4.xyz = coord;
+   coord4.w = lod;
+   __asm vec4_tex_2d_bias_shadow __retVal, sampler, coord4;
+}
+
+vec4 shadow2DProjLod(const sampler2DShadow sampler, const vec4 coord,
+                     const float lod)
+{
+   vec4 pcoord;
+   pcoord.xy = coord.xy / coord.w;
+   pcoord.z = coord.z;
+   pcoord.w = lod;
+   __asm vec4_tex_2d_bias_shadow __retVal, sampler, pcoord;
+}
+
diff --git a/mesalib/src/mesa/shader/slang/library/slang_vertex_builtin_gc.h b/mesalib/src/mesa/shader/slang/library/slang_vertex_builtin_gc.h
new file mode 100644
index 000000000..e5a252b01
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/slang_vertex_builtin_gc.h
@@ -0,0 +1,109 @@
+
+/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE FOLLOWING FILE: */
+/* slang_vertex_builtin.gc */
+
+5,2,2,90,95,5,0,12,0,1,103,108,95,80,111,115,105,116,105,111,110,0,0,0,2,2,90,95,5,0,9,0,1,103,108,
+95,80,111,105,110,116,83,105,122,101,0,0,0,2,2,90,95,5,0,12,0,1,103,108,95,67,108,105,112,86,101,
+114,116,101,120,0,0,0,2,2,90,95,2,0,12,0,1,103,108,95,67,111,108,111,114,0,0,0,2,2,90,95,2,0,12,0,
+1,103,108,95,83,101,99,111,110,100,97,114,121,67,111,108,111,114,0,0,0,2,2,90,95,2,0,11,0,1,103,
+108,95,78,111,114,109,97,108,0,0,0,2,2,90,95,2,0,12,0,1,103,108,95,86,101,114,116,101,120,0,0,0,2,
+2,90,95,2,0,12,0,1,103,108,95,77,117,108,116,105,84,101,120,67,111,111,114,100,48,0,0,0,2,2,90,95,
+2,0,12,0,1,103,108,95,77,117,108,116,105,84,101,120,67,111,111,114,100,49,0,0,0,2,2,90,95,2,0,12,0,
+1,103,108,95,77,117,108,116,105,84,101,120,67,111,111,114,100,50,0,0,0,2,2,90,95,2,0,12,0,1,103,
+108,95,77,117,108,116,105,84,101,120,67,111,111,114,100,51,0,0,0,2,2,90,95,2,0,12,0,1,103,108,95,
+77,117,108,116,105,84,101,120,67,111,111,114,100,52,0,0,0,2,2,90,95,2,0,12,0,1,103,108,95,77,117,
+108,116,105,84,101,120,67,111,111,114,100,53,0,0,0,2,2,90,95,2,0,12,0,1,103,108,95,77,117,108,116,
+105,84,101,120,67,111,111,114,100,54,0,0,0,2,2,90,95,2,0,12,0,1,103,108,95,77,117,108,116,105,84,
+101,120,67,111,111,114,100,55,0,0,0,2,2,90,95,2,0,9,0,1,103,108,95,70,111,103,67,111,111,114,100,0,
+0,0,2,2,90,95,3,0,12,0,1,103,108,95,70,114,111,110,116,67,111,108,111,114,0,0,0,2,2,90,95,3,0,12,0,
+1,103,108,95,66,97,99,107,67,111,108,111,114,0,0,0,2,2,90,95,3,0,12,0,1,103,108,95,70,114,111,110,
+116,83,101,99,111,110,100,97,114,121,67,111,108,111,114,0,0,0,2,2,90,95,3,0,12,0,1,103,108,95,66,
+97,99,107,83,101,99,111,110,100,97,114,121,67,111,108,111,114,0,0,0,2,2,90,95,3,0,12,0,1,103,108,
+95,84,101,120,67,111,111,114,100,0,3,18,103,108,95,77,97,120,84,101,120,116,117,114,101,67,111,111,
+114,100,115,0,0,0,2,2,90,95,3,0,9,0,1,103,108,95,70,111,103,70,114,97,103,67,111,111,114,100,0,0,0,
+1,90,95,0,0,12,0,0,102,116,114,97,110,115,102,111,114,109,0,0,1,9,18,95,95,114,101,116,86,97,108,0,
+18,103,108,95,77,111,100,101,108,86,105,101,119,80,114,111,106,101,99,116,105,111,110,77,97,116,
+114,105,120,0,16,8,48,0,57,18,103,108,95,86,101,114,116,101,120,0,59,120,120,120,120,0,48,18,103,
+108,95,77,111,100,101,108,86,105,101,119,80,114,111,106,101,99,116,105,111,110,77,97,116,114,105,
+120,0,16,10,49,0,57,18,103,108,95,86,101,114,116,101,120,0,59,121,121,121,121,0,48,46,18,103,108,
+95,77,111,100,101,108,86,105,101,119,80,114,111,106,101,99,116,105,111,110,77,97,116,114,105,120,0,
+16,10,50,0,57,18,103,108,95,86,101,114,116,101,120,0,59,122,122,122,122,0,48,46,18,103,108,95,77,
+111,100,101,108,86,105,101,119,80,114,111,106,101,99,116,105,111,110,77,97,116,114,105,120,0,16,10,
+51,0,57,18,103,108,95,86,101,114,116,101,120,0,59,119,119,119,119,0,48,46,20,0,0,1,90,95,0,0,12,0,
+0,116,101,120,116,117,114,101,49,68,76,111,100,0,1,1,0,0,16,0,115,97,109,112,108,101,114,0,0,1,1,0,
+0,9,0,99,111,111,114,100,0,0,1,1,0,0,9,0,108,111,100,0,0,0,1,3,2,90,95,0,0,12,0,1,99,111,111,114,
+100,52,0,0,0,9,18,99,111,111,114,100,52,0,59,120,0,18,99,111,111,114,100,0,20,0,9,18,99,111,111,
+114,100,52,0,59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,101,120,95,49,100,95,98,105,97,
+115,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,
+52,0,0,0,0,1,90,95,0,0,12,0,0,116,101,120,116,117,114,101,49,68,80,114,111,106,76,111,100,0,1,1,0,
+0,16,0,115,97,109,112,108,101,114,0,0,1,1,0,0,10,0,99,111,111,114,100,0,0,1,1,0,0,9,0,108,111,100,
+0,0,0,1,3,2,90,95,0,0,12,0,1,112,99,111,111,114,100,0,0,0,9,18,112,99,111,111,114,100,0,59,120,0,
+18,99,111,111,114,100,0,59,120,0,18,99,111,111,114,100,0,59,121,0,49,20,0,9,18,112,99,111,111,114,
+100,0,59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,101,120,95,49,100,95,98,105,97,115,0,
+18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,112,99,111,111,114,100,0,0,
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+111,114,100,0,59,120,0,18,99,111,111,114,100,0,59,122,0,49,20,0,9,18,112,99,111,111,114,100,0,59,
+119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,101,120,95,49,100,95,98,105,97,115,0,18,95,95,
+114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,112,99,111,111,114,100,0,0,0,0,1,90,
+95,0,0,12,0,0,116,101,120,116,117,114,101,50,68,76,111,100,0,1,1,0,0,17,0,115,97,109,112,108,101,
+114,0,0,1,1,0,0,10,0,99,111,111,114,100,0,0,1,1,0,0,9,0,108,111,100,0,0,0,1,3,2,90,95,0,0,12,0,1,
+99,111,111,114,100,52,0,0,0,9,18,99,111,111,114,100,52,0,59,120,121,0,18,99,111,111,114,100,0,59,
+120,121,0,20,0,9,18,99,111,111,114,100,52,0,59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,
+101,120,95,50,100,95,98,105,97,115,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,
+114,0,0,18,99,111,111,114,100,52,0,0,0,0,1,90,95,0,0,12,0,0,116,101,120,116,117,114,101,50,68,80,
+114,111,106,76,111,100,0,1,1,0,0,17,0,115,97,109,112,108,101,114,0,0,1,1,0,0,11,0,99,111,111,114,
+100,0,0,1,1,0,0,9,0,108,111,100,0,0,0,1,3,2,90,95,0,0,12,0,1,112,99,111,111,114,100,0,0,0,9,18,112,
+99,111,111,114,100,0,59,120,121,0,18,99,111,111,114,100,0,59,120,121,0,18,99,111,111,114,100,0,59,
+122,0,49,20,0,9,18,112,99,111,111,114,100,0,59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,
+101,120,95,50,100,95,98,105,97,115,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,
+114,0,0,18,112,99,111,111,114,100,0,0,0,0,1,90,95,0,0,12,0,0,116,101,120,116,117,114,101,50,68,80,
+114,111,106,76,111,100,0,1,1,0,0,17,0,115,97,109,112,108,101,114,0,0,1,1,0,0,12,0,99,111,111,114,
+100,0,0,1,1,0,0,9,0,108,111,100,0,0,0,1,3,2,90,95,0,0,12,0,1,112,99,111,111,114,100,0,0,0,9,18,112,
+99,111,111,114,100,0,59,120,121,0,18,99,111,111,114,100,0,59,120,121,0,18,99,111,111,114,100,0,59,
+122,0,49,20,0,9,18,112,99,111,111,114,100,0,59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,
+101,120,95,50,100,95,98,105,97,115,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,
+114,0,0,18,112,99,111,111,114,100,0,0,0,0,1,90,95,0,0,12,0,0,116,101,120,116,117,114,101,51,68,76,
+111,100,0,1,1,0,0,18,0,115,97,109,112,108,101,114,0,0,1,1,0,0,11,0,99,111,111,114,100,0,0,1,1,0,0,
+9,0,108,111,100,0,0,0,1,3,2,90,95,0,0,12,0,1,99,111,111,114,100,52,0,0,0,9,18,99,111,111,114,100,
+52,0,59,120,121,122,0,18,99,111,111,114,100,0,59,120,121,122,0,20,0,9,18,99,111,111,114,100,52,0,
+59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,101,120,95,51,100,95,98,105,97,115,0,18,95,
+95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,52,0,0,0,0,1,
+90,95,0,0,12,0,0,116,101,120,116,117,114,101,51,68,80,114,111,106,76,111,100,0,1,1,0,0,18,0,115,97,
+109,112,108,101,114,0,0,1,1,0,0,12,0,99,111,111,114,100,0,0,1,1,0,0,9,0,108,111,100,0,0,0,1,3,2,90,
+95,0,0,12,0,1,112,99,111,111,114,100,0,0,0,9,18,112,99,111,111,114,100,0,59,120,121,122,0,18,99,
+111,111,114,100,0,59,120,121,122,0,18,99,111,111,114,100,0,59,119,0,49,20,0,9,18,112,99,111,111,
+114,100,0,59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,101,120,95,51,100,95,98,105,97,115,
+0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,112,99,111,111,114,100,0,
+0,0,0,1,90,95,0,0,12,0,0,116,101,120,116,117,114,101,67,117,98,101,76,111,100,0,1,1,0,0,19,0,115,
+97,109,112,108,101,114,0,0,1,1,0,0,11,0,99,111,111,114,100,0,0,1,1,0,0,9,0,108,111,100,0,0,0,1,3,2,
+90,95,0,0,12,0,1,99,111,111,114,100,52,0,0,0,9,18,99,111,111,114,100,52,0,59,120,121,122,0,18,99,
+111,111,114,100,0,20,0,9,18,99,111,111,114,100,52,0,59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,
+95,116,101,120,95,99,117,98,101,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,
+0,0,18,99,111,111,114,100,52,0,0,0,0,1,90,95,0,0,12,0,0,115,104,97,100,111,119,49,68,76,111,100,0,
+1,1,0,0,20,0,115,97,109,112,108,101,114,0,0,1,1,0,0,11,0,99,111,111,114,100,0,0,1,1,0,0,9,0,108,
+111,100,0,0,0,1,3,2,90,95,0,0,12,0,1,99,111,111,114,100,52,0,0,0,9,18,99,111,111,114,100,52,0,59,
+120,121,122,0,18,99,111,111,114,100,0,20,0,9,18,99,111,111,114,100,52,0,59,119,0,18,108,111,100,0,
+20,0,4,118,101,99,52,95,116,101,120,95,49,100,95,98,105,97,115,95,115,104,97,100,111,119,0,18,95,
+95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,99,111,111,114,100,52,0,0,0,0,1,
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+112,108,101,114,0,0,1,1,0,0,12,0,99,111,111,114,100,0,0,1,1,0,0,9,0,108,111,100,0,0,0,1,3,2,90,95,
+0,0,12,0,1,112,99,111,111,114,100,0,0,0,9,18,112,99,111,111,114,100,0,59,120,0,18,99,111,111,114,
+100,0,59,120,0,18,99,111,111,114,100,0,59,119,0,49,20,0,9,18,112,99,111,111,114,100,0,59,122,0,18,
+99,111,111,114,100,0,59,122,0,20,0,9,18,112,99,111,111,114,100,0,59,119,0,18,108,111,100,0,20,0,4,
+118,101,99,52,95,116,101,120,95,49,100,95,98,105,97,115,95,115,104,97,100,111,119,0,18,95,95,114,
+101,116,86,97,108,0,0,18,115,97,109,112,108,101,114,0,0,18,112,99,111,111,114,100,0,0,0,0,1,90,95,
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+1,0,0,11,0,99,111,111,114,100,0,0,1,1,0,0,9,0,108,111,100,0,0,0,1,3,2,90,95,0,0,12,0,1,99,111,111,
+114,100,52,0,0,0,9,18,99,111,111,114,100,52,0,59,120,121,122,0,18,99,111,111,114,100,0,20,0,9,18,
+99,111,111,114,100,52,0,59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,101,120,95,50,100,95,
+98,105,97,115,95,115,104,97,100,111,119,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,108,
+101,114,0,0,18,99,111,111,114,100,52,0,0,0,0,1,90,95,0,0,12,0,0,115,104,97,100,111,119,50,68,80,
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+112,99,111,111,114,100,0,59,119,0,18,108,111,100,0,20,0,4,118,101,99,52,95,116,101,120,95,50,100,
+95,98,105,97,115,95,115,104,97,100,111,119,0,18,95,95,114,101,116,86,97,108,0,0,18,115,97,109,112,
+108,101,114,0,0,18,112,99,111,111,114,100,0,0,0,0,0
diff --git a/mesalib/src/mesa/shader/slang/library/syn_to_c.c b/mesalib/src/mesa/shader/slang/library/syn_to_c.c
new file mode 100644
index 000000000..f997edfd8
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/library/syn_to_c.c
@@ -0,0 +1,72 @@
+#include <stdio.h>
+
+static int was_space = 0;
+static int first_char = 1;
+
+static void put_char (int c)
+{
+   if (c == '\n') {
+      if (!first_char) {
+         fputs ("\\n\"\n\"", stdout);
+         first_char = 1;
+      }
+   }
+   else {
+      first_char = 0;
+      if (c == '\\')
+         fputs ("\\\\", stdout);
+      else if (c == '\"')
+         fputs ("\\\"", stdout);
+      else if (!was_space || !(c == ' ' || c == '\t'))
+         fputc (c, stdout);
+      was_space = (c == ' ' || c == '\t');
+   }
+}
+
+int main (int argc, char *argv[])
+{
+   int c;
+   FILE *f;
+
+   if (argc == 1)
+      return 1;
+   f = fopen (argv[1], "r");
+   if (f == NULL)
+      return 1;
+
+   fputs ("\n", stdout);
+   fputs ("/* DO NOT EDIT - THIS FILE IS AUTOMATICALLY GENERATED FROM THE .syn FILE */\n", stdout);
+   fputs ("\n", stdout);
+   fputs ("\"", stdout);
+   c = getc (f);
+   while (c != EOF) {
+      if (c == '/') {
+         int c2 = getc (f);
+         if (c2 == '*') {
+            was_space = 0;
+            c = getc (f);
+            for (;;) {
+               if (c == '*') {
+                  c2 = getc (f);
+                  if (c2 == '/')
+                     break;
+               }
+               c = getc (f);
+            }
+         }
+         else {
+            put_char (c);
+            put_char (c2);
+         }
+      }
+      else {
+         put_char (c);
+      }
+      c = getc (f);
+   }
+   fputs ("\"\n", stdout);
+
+   fclose (f);
+   return 0;
+}
+
diff --git a/mesalib/src/mesa/shader/slang/slang_builtin.c b/mesalib/src/mesa/shader/slang/slang_builtin.c
new file mode 100644
index 000000000..e5809509c
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_builtin.c
@@ -0,0 +1,895 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2008  VMware, Inc.   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_builtin.c
+ * Resolve built-in uniform vars.
+ * \author Brian Paul
+ */
+
+#include "main/imports.h"
+#include "main/mtypes.h"
+#include "shader/program.h"
+#include "shader/prog_instruction.h"
+#include "shader/prog_parameter.h"
+#include "shader/prog_statevars.h"
+#include "shader/slang/slang_ir.h"
+#include "shader/slang/slang_emit.h"
+#include "shader/slang/slang_builtin.h"
+
+
+/** special state token (see below) */
+#define STATE_ARRAY ((gl_state_index) 0xfffff)
+
+
+/**
+ * Lookup GL state given a variable name, 0, 1 or 2 indexes and a field.
+ * Allocate room for the state in the given param list and return position
+ * in the list.
+ * Yes, this is kind of ugly, but it works.
+ */
+static GLint
+lookup_statevar(const char *var, GLint index1, GLint index2, const char *field,
+                GLuint *swizzleOut,
+                struct gl_program_parameter_list *paramList)
+{
+   /*
+    * NOTE: The ARB_vertex_program extension specified that matrices get
+    * loaded in registers in row-major order.  With GLSL, we want column-
+    * major order.  So, we need to transpose all matrices here...
+    */
+   static const struct {
+      const char *name;
+      gl_state_index matrix;
+      gl_state_index modifier;
+   } matrices[] = {
+      { "gl_ModelViewMatrix", STATE_MODELVIEW_MATRIX, STATE_MATRIX_TRANSPOSE },
+      { "gl_ModelViewMatrixInverse", STATE_MODELVIEW_MATRIX, STATE_MATRIX_INVTRANS },
+      { "gl_ModelViewMatrixTranspose", STATE_MODELVIEW_MATRIX, 0 },
+      { "gl_ModelViewMatrixInverseTranspose", STATE_MODELVIEW_MATRIX, STATE_MATRIX_INVERSE },
+
+      { "gl_ProjectionMatrix", STATE_PROJECTION_MATRIX, STATE_MATRIX_TRANSPOSE },
+      { "gl_ProjectionMatrixInverse", STATE_PROJECTION_MATRIX, STATE_MATRIX_INVTRANS },
+      { "gl_ProjectionMatrixTranspose", STATE_PROJECTION_MATRIX, 0 },
+      { "gl_ProjectionMatrixInverseTranspose", STATE_PROJECTION_MATRIX, STATE_MATRIX_INVERSE },
+
+      { "gl_ModelViewProjectionMatrix", STATE_MVP_MATRIX, STATE_MATRIX_TRANSPOSE },
+      { "gl_ModelViewProjectionMatrixInverse", STATE_MVP_MATRIX, STATE_MATRIX_INVTRANS },
+      { "gl_ModelViewProjectionMatrixTranspose", STATE_MVP_MATRIX, 0 },
+      { "gl_ModelViewProjectionMatrixInverseTranspose", STATE_MVP_MATRIX, STATE_MATRIX_INVERSE },
+
+      { "gl_TextureMatrix", STATE_TEXTURE_MATRIX, STATE_MATRIX_TRANSPOSE },
+      { "gl_TextureMatrixInverse", STATE_TEXTURE_MATRIX, STATE_MATRIX_INVTRANS },
+      { "gl_TextureMatrixTranspose", STATE_TEXTURE_MATRIX, 0 },
+      { "gl_TextureMatrixInverseTranspose", STATE_TEXTURE_MATRIX, STATE_MATRIX_INVERSE },
+
+      { "gl_NormalMatrix", STATE_MODELVIEW_MATRIX, STATE_MATRIX_INVERSE },
+
+      { NULL, 0, 0 }
+   };
+   gl_state_index tokens[STATE_LENGTH];
+   GLuint i;
+   GLboolean isMatrix = GL_FALSE;
+
+   for (i = 0; i < STATE_LENGTH; i++) {
+      tokens[i] = 0;
+   }
+   *swizzleOut = SWIZZLE_NOOP;
+
+   /* first, look if var is a pre-defined matrix */
+   for (i = 0; matrices[i].name; i++) {
+      if (strcmp(var, matrices[i].name) == 0) {
+         tokens[0] = matrices[i].matrix;
+         /* tokens[1], [2] and [3] filled below */
+         tokens[4] = matrices[i].modifier;
+         isMatrix = GL_TRUE;
+         break;
+      }
+   }
+
+   if (isMatrix) {
+      if (tokens[0] == STATE_TEXTURE_MATRIX) {
+         /* texture_matrix[index1][index2] */
+         tokens[1] = index1 >= 0 ? index1 : 0; /* which texture matrix */
+         index1 = index2; /* move matrix row value to index1 */
+      }
+      if (index1 < 0) {
+         /* index1 is unused: prevent extra addition at end of function */
+         index1 = 0;
+      }
+   }
+   else if (strcmp(var, "gl_DepthRange") == 0) {
+      tokens[0] = STATE_DEPTH_RANGE;
+      if (strcmp(field, "near") == 0) {
+         *swizzleOut = SWIZZLE_XXXX;
+      }
+      else if (strcmp(field, "far") == 0) {
+         *swizzleOut = SWIZZLE_YYYY;
+      }
+      else if (strcmp(field, "diff") == 0) {
+         *swizzleOut = SWIZZLE_ZZZZ;
+      }
+      else {
+         return -1;
+      }
+   }
+   else if (strcmp(var, "gl_ClipPlane") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_CLIPPLANE;
+      tokens[1] = index1;
+   }
+   else if (strcmp(var, "gl_Point") == 0) {
+      if (strcmp(field, "size") == 0) {
+         tokens[0] = STATE_POINT_SIZE;
+         *swizzleOut = SWIZZLE_XXXX;
+      }
+      else if (strcmp(field, "sizeMin") == 0) {
+         tokens[0] = STATE_POINT_SIZE;
+         *swizzleOut = SWIZZLE_YYYY;
+      }
+      else if (strcmp(field, "sizeMax") == 0) {
+         tokens[0] = STATE_POINT_SIZE;
+         *swizzleOut = SWIZZLE_ZZZZ;
+      }
+      else if (strcmp(field, "fadeThresholdSize") == 0) {
+         tokens[0] = STATE_POINT_SIZE;
+         *swizzleOut = SWIZZLE_WWWW;
+      }
+      else if (strcmp(field, "distanceConstantAttenuation") == 0) {
+         tokens[0] = STATE_POINT_ATTENUATION;
+         *swizzleOut = SWIZZLE_XXXX;
+      }
+      else if (strcmp(field, "distanceLinearAttenuation") == 0) {
+         tokens[0] = STATE_POINT_ATTENUATION;
+         *swizzleOut = SWIZZLE_YYYY;
+      }
+      else if (strcmp(field, "distanceQuadraticAttenuation") == 0) {
+         tokens[0] = STATE_POINT_ATTENUATION;
+         *swizzleOut = SWIZZLE_ZZZZ;
+      }
+      else {
+         return -1;
+      }
+   }
+   else if (strcmp(var, "gl_FrontMaterial") == 0 ||
+            strcmp(var, "gl_BackMaterial") == 0) {
+      tokens[0] = STATE_MATERIAL;
+      if (strcmp(var, "gl_FrontMaterial") == 0)
+         tokens[1] = 0;
+      else
+         tokens[1] = 1;
+      if (strcmp(field, "emission") == 0) {
+         tokens[2] = STATE_EMISSION;
+      }
+      else if (strcmp(field, "ambient") == 0) {
+         tokens[2] = STATE_AMBIENT;
+      }
+      else if (strcmp(field, "diffuse") == 0) {
+         tokens[2] = STATE_DIFFUSE;
+      }
+      else if (strcmp(field, "specular") == 0) {
+         tokens[2] = STATE_SPECULAR;
+      }
+      else if (strcmp(field, "shininess") == 0) {
+         tokens[2] = STATE_SHININESS;
+         *swizzleOut = SWIZZLE_XXXX;
+      }
+      else {
+         return -1;
+      }
+   }
+   else if (strcmp(var, "gl_LightSource") == 0) {
+      if (!field || index1 < 0)
+         return -1;
+
+      tokens[0] = STATE_LIGHT;
+      tokens[1] = index1;
+
+      if (strcmp(field, "ambient") == 0) {
+         tokens[2] = STATE_AMBIENT;
+      }
+      else if (strcmp(field, "diffuse") == 0) {
+         tokens[2] = STATE_DIFFUSE;
+      }
+      else if (strcmp(field, "specular") == 0) {
+         tokens[2] = STATE_SPECULAR;
+      }
+      else if (strcmp(field, "position") == 0) {
+         tokens[2] = STATE_POSITION;
+      }
+      else if (strcmp(field, "halfVector") == 0) {
+         tokens[2] = STATE_HALF_VECTOR;
+      }
+      else if (strcmp(field, "spotDirection") == 0) {
+         tokens[2] = STATE_SPOT_DIRECTION;
+      }
+      else if (strcmp(field, "spotCosCutoff") == 0) {
+         tokens[2] = STATE_SPOT_DIRECTION;
+         *swizzleOut = SWIZZLE_WWWW;
+      }
+      else if (strcmp(field, "spotCutoff") == 0) {
+         tokens[2] = STATE_SPOT_CUTOFF;
+         *swizzleOut = SWIZZLE_XXXX;
+      }
+      else if (strcmp(field, "spotExponent") == 0) {
+         tokens[2] = STATE_ATTENUATION;
+         *swizzleOut = SWIZZLE_WWWW;
+      }
+      else if (strcmp(field, "constantAttenuation") == 0) {
+         tokens[2] = STATE_ATTENUATION;
+         *swizzleOut = SWIZZLE_XXXX;
+      }
+      else if (strcmp(field, "linearAttenuation") == 0) {
+         tokens[2] = STATE_ATTENUATION;
+         *swizzleOut = SWIZZLE_YYYY;
+      }
+      else if (strcmp(field, "quadraticAttenuation") == 0) {
+         tokens[2] = STATE_ATTENUATION;
+         *swizzleOut = SWIZZLE_ZZZZ;
+      }
+      else {
+         return -1;
+      }
+   }
+   else if (strcmp(var, "gl_LightModel") == 0) {
+      if (strcmp(field, "ambient") == 0) {
+         tokens[0] = STATE_LIGHTMODEL_AMBIENT;
+      }
+      else {
+         return -1;
+      }
+   }
+   else if (strcmp(var, "gl_FrontLightModelProduct") == 0) {
+      if (strcmp(field, "sceneColor") == 0) {
+         tokens[0] = STATE_LIGHTMODEL_SCENECOLOR;
+         tokens[1] = 0;
+      }
+      else {
+         return -1;
+      }
+   }
+   else if (strcmp(var, "gl_BackLightModelProduct") == 0) {
+      if (strcmp(field, "sceneColor") == 0) {
+         tokens[0] = STATE_LIGHTMODEL_SCENECOLOR;
+         tokens[1] = 1;
+      }
+      else {
+         return -1;
+      }
+   }
+   else if (strcmp(var, "gl_FrontLightProduct") == 0 ||
+            strcmp(var, "gl_BackLightProduct") == 0) {
+      if (index1 < 0 || !field)
+         return -1;
+
+      tokens[0] = STATE_LIGHTPROD;
+      tokens[1] = index1; /* light number */
+      if (strcmp(var, "gl_FrontLightProduct") == 0) {
+         tokens[2] = 0; /* front */
+      }
+      else {
+         tokens[2] = 1; /* back */
+      }
+      if (strcmp(field, "ambient") == 0) {
+         tokens[3] = STATE_AMBIENT;
+      }
+      else if (strcmp(field, "diffuse") == 0) {
+         tokens[3] = STATE_DIFFUSE;
+      }
+      else if (strcmp(field, "specular") == 0) {
+         tokens[3] = STATE_SPECULAR;
+      }
+      else {
+         return -1;
+      }
+   }
+   else if (strcmp(var, "gl_TextureEnvColor") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_TEXENV_COLOR;
+      tokens[1] = index1;
+   }
+   else if (strcmp(var, "gl_EyePlaneS") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_TEXGEN;
+      tokens[1] = index1; /* tex unit */
+      tokens[2] = STATE_TEXGEN_EYE_S;
+   }
+   else if (strcmp(var, "gl_EyePlaneT") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_TEXGEN;
+      tokens[1] = index1; /* tex unit */
+      tokens[2] = STATE_TEXGEN_EYE_T;
+   }
+   else if (strcmp(var, "gl_EyePlaneR") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_TEXGEN;
+      tokens[1] = index1; /* tex unit */
+      tokens[2] = STATE_TEXGEN_EYE_R;
+   }
+   else if (strcmp(var, "gl_EyePlaneQ") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_TEXGEN;
+      tokens[1] = index1; /* tex unit */
+      tokens[2] = STATE_TEXGEN_EYE_Q;
+   }
+   else if (strcmp(var, "gl_ObjectPlaneS") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_TEXGEN;
+      tokens[1] = index1; /* tex unit */
+      tokens[2] = STATE_TEXGEN_OBJECT_S;
+   }
+   else if (strcmp(var, "gl_ObjectPlaneT") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_TEXGEN;
+      tokens[1] = index1; /* tex unit */
+      tokens[2] = STATE_TEXGEN_OBJECT_T;
+   }
+   else if (strcmp(var, "gl_ObjectPlaneR") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_TEXGEN;
+      tokens[1] = index1; /* tex unit */
+      tokens[2] = STATE_TEXGEN_OBJECT_R;
+   }
+   else if (strcmp(var, "gl_ObjectPlaneQ") == 0) {
+      if (index1 < 0)
+         return -1;
+      tokens[0] = STATE_TEXGEN;
+      tokens[1] = index1; /* tex unit */
+      tokens[2] = STATE_TEXGEN_OBJECT_Q;
+   }
+   else if (strcmp(var, "gl_Fog") == 0) {
+      if (strcmp(field, "color") == 0) {
+         tokens[0] = STATE_FOG_COLOR;
+      }
+      else if (strcmp(field, "density") == 0) {
+         tokens[0] = STATE_FOG_PARAMS;
+         *swizzleOut = SWIZZLE_XXXX;
+      }
+      else if (strcmp(field, "start") == 0) {
+         tokens[0] = STATE_FOG_PARAMS;
+         *swizzleOut = SWIZZLE_YYYY;
+      }
+      else if (strcmp(field, "end") == 0) {
+         tokens[0] = STATE_FOG_PARAMS;
+         *swizzleOut = SWIZZLE_ZZZZ;
+      }
+      else if (strcmp(field, "scale") == 0) {
+         tokens[0] = STATE_FOG_PARAMS;
+         *swizzleOut = SWIZZLE_WWWW;
+      }
+      else {
+         return -1;
+      }
+   }
+   else {
+      return -1;
+   }
+
+   if (isMatrix) {
+      /* load all four columns of matrix */
+      GLint pos[4];
+      GLuint j;
+      for (j = 0; j < 4; j++) {
+         tokens[2] = tokens[3] = j; /* jth row of matrix */
+         pos[j] = _mesa_add_state_reference(paramList, tokens);
+         assert(pos[j] >= 0);
+         ASSERT(pos[j] >= 0);
+      }
+      return pos[0] + index1;
+   }
+   else {
+      /* allocate a single register */
+      GLint pos = _mesa_add_state_reference(paramList, tokens);
+      ASSERT(pos >= 0);
+      return pos;
+   }
+}
+
+
+
+/**
+ * Given a variable name and datatype, emit uniform/constant buffer
+ * entries which will store that state variable.
+ * For example, if name="gl_LightSource" we'll emit 64 state variable
+ * vectors/references and return position where that data starts.  This will
+ * allow run-time array indexing into the light source array.
+ *
+ * Note that this is a recursive function.
+ *
+ * \return -1 if error, else index of start of data in the program parameter list
+ */
+static GLint
+emit_statevars(const char *name, int array_len,
+               const slang_type_specifier *type,
+               gl_state_index tokens[STATE_LENGTH],
+               struct gl_program_parameter_list *paramList)
+{
+   if (type->type == SLANG_SPEC_ARRAY) {
+      GLint i, pos = -1;
+      assert(array_len > 0);
+      if (strcmp(name, "gl_ClipPlane") == 0) {
+         tokens[0] = STATE_CLIPPLANE;
+      }
+      else if (strcmp(name, "gl_LightSource") == 0) {
+         tokens[0] = STATE_LIGHT;
+      }
+      else if (strcmp(name, "gl_FrontLightProduct") == 0) {
+         tokens[0] = STATE_LIGHTPROD;
+         tokens[2] = 0; /* front */
+      }
+      else if (strcmp(name, "gl_BackLightProduct") == 0) {
+         tokens[0] = STATE_LIGHTPROD;
+         tokens[2] = 1; /* back */
+      }
+      else if (strcmp(name, "gl_TextureEnvColor") == 0) {
+         tokens[0] = STATE_TEXENV_COLOR;
+      }
+      else if (strcmp(name, "gl_EyePlaneS") == 0) {
+         tokens[0] = STATE_TEXGEN;
+         tokens[2] = STATE_TEXGEN_EYE_S;
+      }
+      else if (strcmp(name, "gl_EyePlaneT") == 0) {
+         tokens[0] = STATE_TEXGEN;
+         tokens[2] = STATE_TEXGEN_EYE_T;
+      }
+      else if (strcmp(name, "gl_EyePlaneR") == 0) {
+         tokens[0] = STATE_TEXGEN;
+         tokens[2] = STATE_TEXGEN_EYE_R;
+      }
+      else if (strcmp(name, "gl_EyePlaneQ") == 0) {
+         tokens[0] = STATE_TEXGEN;
+         tokens[2] = STATE_TEXGEN_EYE_Q;
+      }
+      else if (strcmp(name, "gl_ObjectPlaneS") == 0) {
+         tokens[0] = STATE_TEXGEN;
+         tokens[2] = STATE_TEXGEN_OBJECT_S;
+      }
+      else if (strcmp(name, "gl_ObjectPlaneT") == 0) {
+         tokens[0] = STATE_TEXGEN;
+         tokens[2] = STATE_TEXGEN_OBJECT_T;
+      }
+      else if (strcmp(name, "gl_ObjectPlaneR") == 0) {
+         tokens[0] = STATE_TEXGEN;
+         tokens[2] = STATE_TEXGEN_OBJECT_R;
+      }
+      else if (strcmp(name, "gl_ObjectPlaneQ") == 0) {
+         tokens[0] = STATE_TEXGEN;
+         tokens[2] = STATE_TEXGEN_OBJECT_Q;
+      }
+      else {
+         return -1; /* invalid array name */
+      }
+      for (i = 0; i < array_len; i++) {
+         GLint p;
+         tokens[1] = i;
+         p = emit_statevars(NULL, 0, type->_array, tokens, paramList);
+         if (i == 0)
+            pos = p;
+      }
+      return pos;
+   }
+   else if (type->type == SLANG_SPEC_STRUCT) {
+      const slang_variable_scope *fields = type->_struct->fields;
+      GLuint i, pos = 0;
+      for (i = 0; i < fields->num_variables; i++) {
+         const slang_variable *var = fields->variables[i];
+         GLint p = emit_statevars(var->a_name, 0, &var->type.specifier,
+                                  tokens, paramList);
+         if (i == 0)
+            pos = p;
+      }
+      return pos;
+   }
+   else {
+      GLint pos;
+      assert(type->type == SLANG_SPEC_VEC4 ||
+             type->type == SLANG_SPEC_VEC3 ||
+             type->type == SLANG_SPEC_VEC2 ||
+             type->type == SLANG_SPEC_FLOAT ||
+             type->type == SLANG_SPEC_IVEC4 ||
+             type->type == SLANG_SPEC_IVEC3 ||
+             type->type == SLANG_SPEC_IVEC2 ||
+             type->type == SLANG_SPEC_INT);
+      if (name) {
+         GLint t;
+
+         if (tokens[0] == STATE_LIGHT)
+            t = 2;
+         else if (tokens[0] == STATE_LIGHTPROD)
+            t = 3;
+         else
+            return -1; /* invalid array name */
+
+         if (strcmp(name, "ambient") == 0) {
+            tokens[t] = STATE_AMBIENT;
+         }
+         else if (strcmp(name, "diffuse") == 0) {
+            tokens[t] = STATE_DIFFUSE;
+         }
+         else if (strcmp(name, "specular") == 0) {
+            tokens[t] = STATE_SPECULAR;
+         }
+         else if (strcmp(name, "position") == 0) {
+            tokens[t] = STATE_POSITION;
+         }
+         else if (strcmp(name, "halfVector") == 0) {
+            tokens[t] = STATE_HALF_VECTOR;
+         }
+         else if (strcmp(name, "spotDirection") == 0) {
+            tokens[t] = STATE_SPOT_DIRECTION; /* xyz components */
+         }
+         else if (strcmp(name, "spotCosCutoff") == 0) {
+            tokens[t] = STATE_SPOT_DIRECTION; /* w component */
+         }
+
+         else if (strcmp(name, "constantAttenuation") == 0) {
+            tokens[t] = STATE_ATTENUATION; /* x component */
+         }
+         else if (strcmp(name, "linearAttenuation") == 0) {
+            tokens[t] = STATE_ATTENUATION; /* y component */
+         }
+         else if (strcmp(name, "quadraticAttenuation") == 0) {
+            tokens[t] = STATE_ATTENUATION; /* z component */
+         }
+         else if (strcmp(name, "spotExponent") == 0) {
+            tokens[t] = STATE_ATTENUATION; /* w = spot exponent */
+         }
+
+         else if (strcmp(name, "spotCutoff") == 0) {
+            tokens[t] = STATE_SPOT_CUTOFF; /* x component */
+         }
+
+         else {
+            return -1; /* invalid field name */
+         }
+      }
+
+      pos = _mesa_add_state_reference(paramList, tokens);
+      return pos;
+   }
+
+   return 1;
+}
+
+
+/**
+ * Unroll the named built-in uniform variable into a sequence of state
+ * vars in the given parameter list.
+ */
+static GLint
+alloc_state_var_array(const slang_variable *var,
+                      struct gl_program_parameter_list *paramList)
+{
+   gl_state_index tokens[STATE_LENGTH];
+   GLuint i;
+   GLint pos;
+
+   /* Initialize the state tokens array.  This is very important.
+    * When we call _mesa_add_state_reference() it'll searches the parameter
+    * list to see if the given statevar token sequence is already present.
+    * This is normally a good thing since it prevents redundant values in the
+    * constant buffer.
+    *
+    * But when we're building arrays of state this can be bad.  For example,
+    * consider this fragment of GLSL code:
+    *   foo = gl_LightSource[3].diffuse;
+    *   ...
+    *   bar = gl_LightSource[i].diffuse;
+    *
+    * When we unroll the gl_LightSource array (for "bar") we want to re-emit
+    * gl_LightSource[3].diffuse and not re-use the first instance (from "foo")
+    * since that would upset the array layout.  We handle this situation by
+    * setting the last token in the state var token array to the special
+    * value STATE_ARRAY.
+    * This token will only be set for array state.  We can hijack the last
+    * element in the array for this since it's never used for light, clipplane
+    * or texture env array state.
+    */
+   for (i = 0; i < STATE_LENGTH; i++)
+      tokens[i] = 0;
+   tokens[STATE_LENGTH - 1] = STATE_ARRAY;
+
+   pos = emit_statevars(var->a_name, var->array_len, &var->type.specifier,
+                        tokens, paramList);
+
+   return pos;
+}
+
+
+
+/**
+ * Allocate storage for a pre-defined uniform (a GL state variable).
+ * As a memory-saving optimization, we try to only allocate storage for
+ * state vars that are actually used.
+ *
+ * Arrays such as gl_LightSource are handled specially.  For an expression
+ * like "gl_LightSource[2].diffuse", we can allocate a single uniform/constant
+ * slot and return the index.  In this case, we return direct=TRUE.
+ *
+ * Buf for something like "gl_LightSource[i].diffuse" we don't know the value
+ * of 'i' at compile time so we need to "unroll" the gl_LightSource array
+ * into a consecutive sequence of uniform/constant slots so it can be indexed
+ * at runtime.  In this case, we return direct=FALSE.
+ *
+ * Currently, all pre-defined uniforms are in one of these forms:
+ *   var
+ *   var[i]
+ *   var.field
+ *   var[i].field
+ *   var[i][j]
+ *
+ * \return -1 upon error, else position in paramList of the state variable/data
+ */
+GLint
+_slang_alloc_statevar(slang_ir_node *n,
+                      struct gl_program_parameter_list *paramList,
+                      GLboolean *direct)
+{
+   slang_ir_node *n0 = n;
+   const char *field = NULL;
+   GLint index1 = -1, index2 = -1;
+   GLuint swizzle;
+
+   *direct = GL_TRUE;
+
+   if (n->Opcode == IR_FIELD) {
+      field = n->Field;
+      n = n->Children[0];
+   }
+
+   if (n->Opcode == IR_ELEMENT) {
+      if (n->Children[1]->Opcode == IR_FLOAT) {
+         index1 = (GLint) n->Children[1]->Value[0];
+      }
+      else {
+         *direct = GL_FALSE;
+      }
+      n = n->Children[0];
+   }
+
+   if (n->Opcode == IR_ELEMENT) {
+      /* XXX can only handle constant indexes for now */
+      if (n->Children[1]->Opcode == IR_FLOAT) {
+         /* two-dimensional array index: mat[i][j] */
+         index2 = index1;
+         index1 = (GLint) n->Children[1]->Value[0];
+      }
+      else {
+         *direct = GL_FALSE;
+      }
+      n = n->Children[0];
+   }
+
+   assert(n->Opcode == IR_VAR);
+
+   if (*direct) {
+      const char *var = (const char *) n->Var->a_name;
+      GLint pos =
+         lookup_statevar(var, index1, index2, field, &swizzle, paramList);
+      if (pos >= 0) {
+         /* newly resolved storage for the statevar/constant/uniform */
+         n0->Store->File = PROGRAM_STATE_VAR;
+         n0->Store->Index = pos;
+         n0->Store->Swizzle = swizzle;
+         n0->Store->Parent = NULL;
+         return pos;
+      }
+   }
+
+   *direct = GL_FALSE;
+   return alloc_state_var_array(n->Var, paramList);
+}
+
+
+
+
+#define SWIZZLE_ZWWW MAKE_SWIZZLE4(SWIZZLE_Z, SWIZZLE_W, SWIZZLE_W, SWIZZLE_W)
+
+
+/** Predefined shader inputs */
+struct input_info
+{
+   const char *Name;
+   GLuint Attrib;
+   GLenum Type;
+   GLuint Swizzle;
+};
+
+/** Predefined vertex shader inputs/attributes */
+static const struct input_info vertInputs[] = {
+   { "gl_Vertex", VERT_ATTRIB_POS, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_Normal", VERT_ATTRIB_NORMAL, GL_FLOAT_VEC3, SWIZZLE_NOOP },
+   { "gl_Color", VERT_ATTRIB_COLOR0, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_SecondaryColor", VERT_ATTRIB_COLOR1, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_FogCoord", VERT_ATTRIB_FOG, GL_FLOAT, SWIZZLE_XXXX },
+   { "gl_MultiTexCoord0", VERT_ATTRIB_TEX0, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_MultiTexCoord1", VERT_ATTRIB_TEX1, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_MultiTexCoord2", VERT_ATTRIB_TEX2, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_MultiTexCoord3", VERT_ATTRIB_TEX3, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_MultiTexCoord4", VERT_ATTRIB_TEX4, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_MultiTexCoord5", VERT_ATTRIB_TEX5, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_MultiTexCoord6", VERT_ATTRIB_TEX6, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_MultiTexCoord7", VERT_ATTRIB_TEX7, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { NULL, 0, GL_NONE, SWIZZLE_NOOP }
+};
+
+/** Predefined fragment shader inputs */
+static const struct input_info fragInputs[] = {
+   { "gl_FragCoord", FRAG_ATTRIB_WPOS, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_Color", FRAG_ATTRIB_COL0, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_SecondaryColor", FRAG_ATTRIB_COL1, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   { "gl_TexCoord", FRAG_ATTRIB_TEX0, GL_FLOAT_VEC4, SWIZZLE_NOOP },
+   /* note: we're packing several quantities into the fogcoord vector */
+   { "gl_FogFragCoord", FRAG_ATTRIB_FOGC, GL_FLOAT, SWIZZLE_XXXX },
+   { "gl_FrontFacing", FRAG_ATTRIB_FACE, GL_FLOAT, SWIZZLE_XXXX },
+   { "gl_PointCoord", FRAG_ATTRIB_PNTC, GL_FLOAT_VEC2, SWIZZLE_XYZW },
+   { NULL, 0, GL_NONE, SWIZZLE_NOOP }
+};
+
+
+/**
+ * Return the VERT_ATTRIB_* or FRAG_ATTRIB_* value that corresponds to
+ * a vertex or fragment program input variable.  Return -1 if the input
+ * name is invalid.
+ * XXX return size too
+ */
+GLint
+_slang_input_index(const char *name, GLenum target, GLuint *swizzleOut)
+{
+   const struct input_info *inputs;
+   GLuint i;
+
+   switch (target) {
+   case GL_VERTEX_PROGRAM_ARB:
+      inputs = vertInputs;
+      break;
+   case GL_FRAGMENT_PROGRAM_ARB:
+      inputs = fragInputs;
+      break;
+   /* XXX geom program */
+   default:
+      _mesa_problem(NULL, "bad target in _slang_input_index");
+      return -1;
+   }
+
+   ASSERT(MAX_TEXTURE_COORD_UNITS == 8); /* if this fails, fix vertInputs above */
+
+   for (i = 0; inputs[i].Name; i++) {
+      if (strcmp(inputs[i].Name, name) == 0) {
+         /* found */
+         *swizzleOut = inputs[i].Swizzle;
+         return inputs[i].Attrib;
+      }
+   }
+   return -1;
+}
+
+
+/**
+ * Return name of the given vertex attribute (VERT_ATTRIB_x).
+ */
+const char *
+_slang_vert_attrib_name(GLuint attrib)
+{
+   GLuint i;
+   assert(attrib < VERT_ATTRIB_GENERIC0);
+   for (i = 0; vertInputs[i].Name; i++) {
+      if (vertInputs[i].Attrib == attrib)
+         return vertInputs[i].Name;
+   }
+   return NULL;
+}
+
+
+/**
+ * Return type (GL_FLOAT, GL_FLOAT_VEC2, etc) of the given vertex
+ * attribute (VERT_ATTRIB_x).
+ */
+GLenum
+_slang_vert_attrib_type(GLuint attrib)
+{
+   GLuint i;
+   assert(attrib < VERT_ATTRIB_GENERIC0);
+   for (i = 0; vertInputs[i].Name; i++) {
+      if (vertInputs[i].Attrib == attrib)
+         return vertInputs[i].Type;
+   }
+   return GL_NONE;
+}
+
+
+
+
+
+/** Predefined shader output info */
+struct output_info
+{
+   const char *Name;
+   GLuint Attrib;
+};
+
+/** Predefined vertex shader outputs */
+static const struct output_info vertOutputs[] = {
+   { "gl_Position", VERT_RESULT_HPOS },
+   { "gl_FrontColor", VERT_RESULT_COL0 },
+   { "gl_BackColor", VERT_RESULT_BFC0 },
+   { "gl_FrontSecondaryColor", VERT_RESULT_COL1 },
+   { "gl_BackSecondaryColor", VERT_RESULT_BFC1 },
+   { "gl_TexCoord", VERT_RESULT_TEX0 },
+   { "gl_FogFragCoord", VERT_RESULT_FOGC },
+   { "gl_PointSize", VERT_RESULT_PSIZ },
+   { NULL, 0 }
+};
+
+/** Predefined fragment shader outputs */
+static const struct output_info fragOutputs[] = {
+   { "gl_FragColor", FRAG_RESULT_COLOR },
+   { "gl_FragDepth", FRAG_RESULT_DEPTH },
+   { "gl_FragData", FRAG_RESULT_DATA0 },
+   { NULL, 0 }
+};
+
+
+/**
+ * Return the VERT_RESULT_* or FRAG_RESULT_* value that corresponds to
+ * a vertex or fragment program output variable.  Return -1 for an invalid
+ * output name.
+ */
+GLint
+_slang_output_index(const char *name, GLenum target)
+{
+   const struct output_info *outputs;
+   GLuint i;
+
+   switch (target) {
+   case GL_VERTEX_PROGRAM_ARB:
+      outputs = vertOutputs;
+      break;
+   case GL_FRAGMENT_PROGRAM_ARB:
+      outputs = fragOutputs;
+      break;
+   /* XXX geom program */
+   default:
+      _mesa_problem(NULL, "bad target in _slang_output_index");
+      return -1;
+   }
+
+   for (i = 0; outputs[i].Name; i++) {
+      if (strcmp(outputs[i].Name, name) == 0) {
+         /* found */
+         return outputs[i].Attrib;
+      }
+   }
+   return -1;
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_builtin.h b/mesalib/src/mesa/shader/slang/slang_builtin.h
new file mode 100644
index 000000000..f814d11ac
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_builtin.h
@@ -0,0 +1,54 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef SLANG_BUILTIN_H
+#define SLANG_BUILTIN_H
+
+#include "shader/prog_parameter.h"
+#include "slang_utility.h"
+#include "slang_ir.h"
+
+
+extern GLint
+_slang_alloc_statevar(slang_ir_node *n,
+                      struct gl_program_parameter_list *paramList,
+                      GLboolean *direct);
+
+
+extern GLint
+_slang_input_index(const char *name, GLenum target, GLuint *swizzleOut);
+
+extern GLint
+_slang_output_index(const char *name, GLenum target);
+
+
+extern const char *
+_slang_vert_attrib_name(GLuint attrib);
+
+extern GLenum
+_slang_vert_attrib_type(GLuint attrib);
+
+
+#endif /* SLANG_BUILTIN_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_codegen.c b/mesalib/src/mesa/shader/slang/slang_codegen.c
new file mode 100644
index 000000000..703af9f87
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_codegen.c
@@ -0,0 +1,5319 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2008 VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_codegen.c
+ * Generate IR tree from AST.
+ * \author Brian Paul
+ */
+
+
+/***
+ *** NOTES:
+ *** The new_() functions return a new instance of a simple IR node.
+ *** The gen_() functions generate larger IR trees from the simple nodes.
+ ***/
+
+
+
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/mtypes.h"
+#include "shader/program.h"
+#include "shader/prog_instruction.h"
+#include "shader/prog_parameter.h"
+#include "shader/prog_print.h"
+#include "shader/prog_statevars.h"
+#include "slang_typeinfo.h"
+#include "slang_builtin.h"
+#include "slang_codegen.h"
+#include "slang_compile.h"
+#include "slang_label.h"
+#include "slang_mem.h"
+#include "slang_simplify.h"
+#include "slang_emit.h"
+#include "slang_vartable.h"
+#include "slang_ir.h"
+#include "slang_print.h"
+
+
+/** Max iterations to unroll */
+const GLuint MAX_FOR_LOOP_UNROLL_ITERATIONS = 32;
+
+/** Max for-loop body size (in slang operations) to unroll */
+const GLuint MAX_FOR_LOOP_UNROLL_BODY_SIZE = 50;
+
+/** Max for-loop body complexity to unroll.
+ * We'll compute complexity as the product of the number of iterations
+ * and the size of the body.  So long-ish loops with very simple bodies
+ * can be unrolled, as well as short loops with larger bodies.
+ */
+const GLuint MAX_FOR_LOOP_UNROLL_COMPLEXITY = 256;
+
+
+
+static slang_ir_node *
+_slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper);
+
+static void
+slang_substitute(slang_assemble_ctx *A, slang_operation *oper,
+                 GLuint substCount, slang_variable **substOld,
+		 slang_operation **substNew, GLboolean isLHS);
+
+
+/**
+ * Retrieves type information about an operation.
+ * Returns GL_TRUE on success.
+ * Returns GL_FALSE otherwise.
+ */
+static GLboolean
+typeof_operation(const struct slang_assemble_ctx_ *A,
+                 slang_operation *op,
+                 slang_typeinfo *ti)
+{
+   return _slang_typeof_operation(op, &A->space, ti, A->atoms, A->log);
+}
+
+
+static GLboolean
+is_sampler_type(const slang_fully_specified_type *t)
+{
+   switch (t->specifier.type) {
+   case SLANG_SPEC_SAMPLER1D:
+   case SLANG_SPEC_SAMPLER2D:
+   case SLANG_SPEC_SAMPLER3D:
+   case SLANG_SPEC_SAMPLERCUBE:
+   case SLANG_SPEC_SAMPLER1DSHADOW:
+   case SLANG_SPEC_SAMPLER2DSHADOW:
+   case SLANG_SPEC_SAMPLER2DRECT:
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Return the offset (in floats or ints) of the named field within
+ * the given struct.  Return -1 if field not found.
+ * If field is NULL, return the size of the struct instead.
+ */
+static GLint
+_slang_field_offset(const slang_type_specifier *spec, slang_atom field)
+{
+   GLint offset = 0;
+   GLuint i;
+   for (i = 0; i < spec->_struct->fields->num_variables; i++) {
+      const slang_variable *v = spec->_struct->fields->variables[i];
+      const GLuint sz = _slang_sizeof_type_specifier(&v->type.specifier);
+      if (sz > 1) {
+         /* types larger than 1 float are register (4-float) aligned */
+         offset = (offset + 3) & ~3;
+      }
+      if (field && v->a_name == field) {
+         return offset;
+      }
+      offset += sz;
+   }
+   if (field)
+      return -1; /* field not found */
+   else
+      return offset;  /* struct size */
+}
+
+
+/**
+ * Return the size (in floats) of the given type specifier.
+ * If the size is greater than 4, the size should be a multiple of 4
+ * so that the correct number of 4-float registers are allocated.
+ * For example, a mat3x2 is size 12 because we want to store the
+ * 3 columns in 3 float[4] registers.
+ */
+GLuint
+_slang_sizeof_type_specifier(const slang_type_specifier *spec)
+{
+   GLuint sz;
+   switch (spec->type) {
+   case SLANG_SPEC_VOID:
+      sz = 0;
+      break;
+   case SLANG_SPEC_BOOL:
+      sz = 1;
+      break;
+   case SLANG_SPEC_BVEC2:
+      sz = 2;
+      break;
+   case SLANG_SPEC_BVEC3:
+      sz = 3;
+      break;
+   case SLANG_SPEC_BVEC4:
+      sz = 4;
+      break;
+   case SLANG_SPEC_INT:
+      sz = 1;
+      break;
+   case SLANG_SPEC_IVEC2:
+      sz = 2;
+      break;
+   case SLANG_SPEC_IVEC3:
+      sz = 3;
+      break;
+   case SLANG_SPEC_IVEC4:
+      sz = 4;
+      break;
+   case SLANG_SPEC_FLOAT:
+      sz = 1;
+      break;
+   case SLANG_SPEC_VEC2:
+      sz = 2;
+      break;
+   case SLANG_SPEC_VEC3:
+      sz = 3;
+      break;
+   case SLANG_SPEC_VEC4:
+      sz = 4;
+      break;
+   case SLANG_SPEC_MAT2:
+      sz = 2 * 4; /* 2 columns (regs) */
+      break;
+   case SLANG_SPEC_MAT3:
+      sz = 3 * 4;
+      break;
+   case SLANG_SPEC_MAT4:
+      sz = 4 * 4;
+      break;
+   case SLANG_SPEC_MAT23:
+      sz = 2 * 4; /* 2 columns (regs) */
+      break;
+   case SLANG_SPEC_MAT32:
+      sz = 3 * 4; /* 3 columns (regs) */
+      break;
+   case SLANG_SPEC_MAT24:
+      sz = 2 * 4;
+      break;
+   case SLANG_SPEC_MAT42:
+      sz = 4 * 4; /* 4 columns (regs) */
+      break;
+   case SLANG_SPEC_MAT34:
+      sz = 3 * 4;
+      break;
+   case SLANG_SPEC_MAT43:
+      sz = 4 * 4; /* 4 columns (regs) */
+      break;
+   case SLANG_SPEC_SAMPLER1D:
+   case SLANG_SPEC_SAMPLER2D:
+   case SLANG_SPEC_SAMPLER3D:
+   case SLANG_SPEC_SAMPLERCUBE:
+   case SLANG_SPEC_SAMPLER1DSHADOW:
+   case SLANG_SPEC_SAMPLER2DSHADOW:
+   case SLANG_SPEC_SAMPLER2DRECT:
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+      sz = 1; /* a sampler is basically just an integer index */
+      break;
+   case SLANG_SPEC_STRUCT:
+      sz = _slang_field_offset(spec, 0); /* special use */
+      if (sz == 1) {
+         /* 1-float structs are actually troublesome to deal with since they
+          * might get placed at R.x, R.y, R.z or R.z.  Return size=2 to
+          * ensure the object is placed at R.x
+          */
+         sz = 2;
+      }
+      else if (sz > 4) {
+         sz = (sz + 3) & ~0x3; /* round up to multiple of four */
+      }
+      break;
+   case SLANG_SPEC_ARRAY:
+      sz = _slang_sizeof_type_specifier(spec->_array);
+      break;
+   default:
+      _mesa_problem(NULL, "Unexpected type in _slang_sizeof_type_specifier()");
+      sz = 0;
+   }
+
+   if (sz > 4) {
+      /* if size is > 4, it should be a multiple of four */
+      assert((sz & 0x3) == 0);
+   }
+   return sz;
+}
+
+
+/**
+ * Query variable/array length (number of elements).
+ * This is slightly non-trivial because there are two ways to express
+ * arrays: "float x[3]" vs. "float[3] x".
+ * \return the length of the array for the given variable, or 0 if not an array
+ */
+static GLint
+_slang_array_length(const slang_variable *var)
+{
+   if (var->type.array_len > 0) {
+      /* Ex: float[4] x; */
+      return var->type.array_len;
+   }
+   if (var->array_len > 0) {
+      /* Ex: float x[4]; */
+      return var->array_len;
+   }
+   return 0;
+}
+
+
+/**
+ * Compute total size of array give size of element, number of elements.
+ * \return size in floats
+ */
+static GLint
+_slang_array_size(GLint elemSize, GLint arrayLen)
+{
+   GLint total;
+   assert(elemSize > 0);
+   if (arrayLen > 1) {
+      /* round up base type to multiple of 4 */
+      total = ((elemSize + 3) & ~0x3) * MAX2(arrayLen, 1);
+   }
+   else {
+      total = elemSize;
+   }
+   return total;
+}
+
+
+/**
+ * Return the TEXTURE_*_INDEX value that corresponds to a sampler type,
+ * or -1 if the type is not a sampler.
+ */
+static GLint
+sampler_to_texture_index(const slang_type_specifier_type type)
+{
+   switch (type) {
+   case SLANG_SPEC_SAMPLER1D:
+      return TEXTURE_1D_INDEX;
+   case SLANG_SPEC_SAMPLER2D:
+      return TEXTURE_2D_INDEX;
+   case SLANG_SPEC_SAMPLER3D:
+      return TEXTURE_3D_INDEX;
+   case SLANG_SPEC_SAMPLERCUBE:
+      return TEXTURE_CUBE_INDEX;
+   case SLANG_SPEC_SAMPLER1DSHADOW:
+      return TEXTURE_1D_INDEX; /* XXX fix */
+   case SLANG_SPEC_SAMPLER2DSHADOW:
+      return TEXTURE_2D_INDEX; /* XXX fix */
+   case SLANG_SPEC_SAMPLER2DRECT:
+      return TEXTURE_RECT_INDEX;
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+      return TEXTURE_RECT_INDEX; /* XXX fix */
+   default:
+      return -1;
+   }
+}
+
+
+/** helper to build a SLANG_OPER_IDENTIFIER node */
+static void
+slang_operation_identifier(slang_operation *oper,
+                           slang_assemble_ctx *A,
+                           const char *name)
+{
+   oper->type = SLANG_OPER_IDENTIFIER;
+   oper->a_id = slang_atom_pool_atom(A->atoms, name);
+}
+
+
+/**
+ * Called when we begin code/IR generation for a new while/do/for loop.
+ */
+static void
+push_loop(slang_assemble_ctx *A, slang_operation *loopOper, slang_ir_node *loopIR)
+{
+   A->LoopOperStack[A->LoopDepth] = loopOper;
+   A->LoopIRStack[A->LoopDepth] = loopIR;
+   A->LoopDepth++;
+}
+
+
+/**
+ * Called when we end code/IR generation for a new while/do/for loop.
+ */
+static void
+pop_loop(slang_assemble_ctx *A)
+{
+   assert(A->LoopDepth > 0);
+   A->LoopDepth--;
+}
+
+
+/**
+ * Return pointer to slang_operation for the loop we're currently inside,
+ * or NULL if not in a loop.
+ */
+static const slang_operation *
+current_loop_oper(const slang_assemble_ctx *A)
+{
+   if (A->LoopDepth > 0)
+      return A->LoopOperStack[A->LoopDepth - 1];
+   else
+      return NULL;
+}
+
+
+/**
+ * Return pointer to slang_ir_node for the loop we're currently inside,
+ * or NULL if not in a loop.
+ */
+static slang_ir_node *
+current_loop_ir(const slang_assemble_ctx *A)
+{
+   if (A->LoopDepth > 0)
+      return A->LoopIRStack[A->LoopDepth - 1];
+   else
+      return NULL;
+}
+
+
+/**********************************************************************/
+
+
+/**
+ * Map "_asm foo" to IR_FOO, etc.
+ */
+typedef struct
+{
+   const char *Name;
+   slang_ir_opcode Opcode;
+   GLuint HaveRetValue, NumParams;
+} slang_asm_info;
+
+
+static slang_asm_info AsmInfo[] = {
+   /* vec4 binary op */
+   { "vec4_add", IR_ADD, 1, 2 },
+   { "vec4_subtract", IR_SUB, 1, 2 },
+   { "vec4_multiply", IR_MUL, 1, 2 },
+   { "vec4_dot", IR_DOT4, 1, 2 },
+   { "vec3_dot", IR_DOT3, 1, 2 },
+   { "vec2_dot", IR_DOT2, 1, 2 },
+   { "vec3_nrm", IR_NRM3, 1, 1 },
+   { "vec4_nrm", IR_NRM4, 1, 1 },
+   { "vec3_cross", IR_CROSS, 1, 2 },
+   { "vec4_lrp", IR_LRP, 1, 3 },
+   { "vec4_min", IR_MIN, 1, 2 },
+   { "vec4_max", IR_MAX, 1, 2 },
+   { "vec4_clamp", IR_CLAMP, 1, 3 },
+   { "vec4_seq", IR_SEQUAL, 1, 2 },
+   { "vec4_sne", IR_SNEQUAL, 1, 2 },
+   { "vec4_sge", IR_SGE, 1, 2 },
+   { "vec4_sgt", IR_SGT, 1, 2 },
+   { "vec4_sle", IR_SLE, 1, 2 },
+   { "vec4_slt", IR_SLT, 1, 2 },
+   /* vec4 unary */
+   { "vec4_move", IR_MOVE, 1, 1 },
+   { "vec4_floor", IR_FLOOR, 1, 1 },
+   { "vec4_frac", IR_FRAC, 1, 1 },
+   { "vec4_abs", IR_ABS, 1, 1 },
+   { "vec4_negate", IR_NEG, 1, 1 },
+   { "vec4_ddx", IR_DDX, 1, 1 },
+   { "vec4_ddy", IR_DDY, 1, 1 },
+   /* float binary op */
+   { "float_power", IR_POW, 1, 2 },
+   /* texture / sampler */
+   { "vec4_tex_1d", IR_TEX, 1, 2 },
+   { "vec4_tex_1d_bias", IR_TEXB, 1, 2 },  /* 1d w/ bias */
+   { "vec4_tex_1d_proj", IR_TEXP, 1, 2 },  /* 1d w/ projection */
+   { "vec4_tex_2d", IR_TEX, 1, 2 },
+   { "vec4_tex_2d_bias", IR_TEXB, 1, 2 },  /* 2d w/ bias */
+   { "vec4_tex_2d_proj", IR_TEXP, 1, 2 },  /* 2d w/ projection */
+   { "vec4_tex_3d", IR_TEX, 1, 2 },
+   { "vec4_tex_3d_bias", IR_TEXB, 1, 2 },  /* 3d w/ bias */
+   { "vec4_tex_3d_proj", IR_TEXP, 1, 2 },  /* 3d w/ projection */
+   { "vec4_tex_cube", IR_TEX, 1, 2 },      /* cubemap */
+   { "vec4_tex_rect", IR_TEX, 1, 2 },      /* rectangle */
+   { "vec4_tex_rect_bias", IR_TEX, 1, 2 }, /* rectangle w/ projection */
+
+   /* texture / sampler but with shadow comparison */
+   { "vec4_tex_1d_shadow", IR_TEX_SH, 1, 2 },
+   { "vec4_tex_1d_bias_shadow", IR_TEXB_SH, 1, 2 },
+   { "vec4_tex_1d_proj_shadow", IR_TEXP_SH, 1, 2 },
+   { "vec4_tex_2d_shadow", IR_TEX_SH, 1, 2 },
+   { "vec4_tex_2d_bias_shadow", IR_TEXB_SH, 1, 2 },
+   { "vec4_tex_2d_proj_shadow", IR_TEXP_SH, 1, 2 },
+   { "vec4_tex_rect_shadow", IR_TEX_SH, 1, 2 },
+   { "vec4_tex_rect_proj_shadow", IR_TEXP_SH, 1, 2 },
+
+   /* unary op */
+   { "ivec4_to_vec4", IR_I_TO_F, 1, 1 }, /* int[4] to float[4] */
+   { "vec4_to_ivec4", IR_F_TO_I, 1, 1 },  /* float[4] to int[4] */
+   { "float_exp", IR_EXP, 1, 1 },
+   { "float_exp2", IR_EXP2, 1, 1 },
+   { "float_log2", IR_LOG2, 1, 1 },
+   { "float_rsq", IR_RSQ, 1, 1 },
+   { "float_rcp", IR_RCP, 1, 1 },
+   { "float_sine", IR_SIN, 1, 1 },
+   { "float_cosine", IR_COS, 1, 1 },
+   { "float_noise1", IR_NOISE1, 1, 1},
+   { "float_noise2", IR_NOISE2, 1, 1},
+   { "float_noise3", IR_NOISE3, 1, 1},
+   { "float_noise4", IR_NOISE4, 1, 1},
+
+   { NULL, IR_NOP, 0, 0 }
+};
+
+
+static slang_ir_node *
+new_node3(slang_ir_opcode op,
+          slang_ir_node *c0, slang_ir_node *c1, slang_ir_node *c2)
+{
+   slang_ir_node *n = (slang_ir_node *) _slang_alloc(sizeof(slang_ir_node));
+   if (n) {
+      n->Opcode = op;
+      n->Children[0] = c0;
+      n->Children[1] = c1;
+      n->Children[2] = c2;
+      n->InstLocation = -1;
+   }
+   return n;
+}
+
+static slang_ir_node *
+new_node2(slang_ir_opcode op, slang_ir_node *c0, slang_ir_node *c1)
+{
+   return new_node3(op, c0, c1, NULL);
+}
+
+static slang_ir_node *
+new_node1(slang_ir_opcode op, slang_ir_node *c0)
+{
+   return new_node3(op, c0, NULL, NULL);
+}
+
+static slang_ir_node *
+new_node0(slang_ir_opcode op)
+{
+   return new_node3(op, NULL, NULL, NULL);
+}
+
+
+/**
+ * Create sequence of two nodes.
+ */
+static slang_ir_node *
+new_seq(slang_ir_node *left, slang_ir_node *right)
+{
+   if (!left)
+      return right;
+   if (!right)
+      return left;
+   return new_node2(IR_SEQ, left, right);
+}
+
+static slang_ir_node *
+new_label(slang_label *label)
+{
+   slang_ir_node *n = new_node0(IR_LABEL);
+   assert(label);
+   if (n)
+      n->Label = label;
+   return n;
+}
+
+static slang_ir_node *
+new_float_literal(const float v[4], GLuint size)
+{
+   slang_ir_node *n = new_node0(IR_FLOAT);
+   assert(size <= 4);
+   COPY_4V(n->Value, v);
+   /* allocate a storage object, but compute actual location (Index) later */
+   n->Store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, size);
+   return n;
+}
+
+
+static slang_ir_node *
+new_not(slang_ir_node *n)
+{
+   return new_node1(IR_NOT, n);
+}
+
+
+/**
+ * Non-inlined function call.
+ */
+static slang_ir_node *
+new_function_call(slang_ir_node *code, slang_label *name)
+{
+   slang_ir_node *n = new_node1(IR_CALL, code);
+   assert(name);
+   if (n)
+      n->Label = name;
+   return n;
+}
+
+
+/**
+ * Unconditional jump.
+ */
+static slang_ir_node *
+new_return(slang_label *dest)
+{
+   slang_ir_node *n = new_node0(IR_RETURN);
+   assert(dest);
+   if (n)
+      n->Label = dest;
+   return n;
+}
+
+
+static slang_ir_node *
+new_loop(slang_ir_node *body)
+{
+   return new_node1(IR_LOOP, body);
+}
+
+
+static slang_ir_node *
+new_break(slang_ir_node *loopNode)
+{
+   slang_ir_node *n = new_node0(IR_BREAK);
+   assert(loopNode);
+   assert(loopNode->Opcode == IR_LOOP);
+   if (n) {
+      /* insert this node at head of linked list of cont/break instructions */
+      n->List = loopNode->List;
+      loopNode->List = n;
+   }
+   return n;
+}
+
+
+/**
+ * Make new IR_BREAK_IF_TRUE.
+ */
+static slang_ir_node *
+new_break_if_true(slang_assemble_ctx *A, slang_ir_node *cond)
+{
+   slang_ir_node *loopNode = current_loop_ir(A);
+   slang_ir_node *n;
+   assert(loopNode);
+   assert(loopNode->Opcode == IR_LOOP);
+   n = new_node1(IR_BREAK_IF_TRUE, cond);
+   if (n) {
+      /* insert this node at head of linked list of cont/break instructions */
+      n->List = loopNode->List;
+      loopNode->List = n;
+   }
+   return n;
+}
+
+
+/**
+ * Make new IR_CONT_IF_TRUE node.
+ */
+static slang_ir_node *
+new_cont_if_true(slang_assemble_ctx *A, slang_ir_node *cond)
+{
+   slang_ir_node *loopNode = current_loop_ir(A);
+   slang_ir_node *n;
+   assert(loopNode);
+   assert(loopNode->Opcode == IR_LOOP);
+   n = new_node1(IR_CONT_IF_TRUE, cond);
+   if (n) {
+      n->Parent = loopNode; /* pointer to containing loop */
+      /* insert this node at head of linked list of cont/break instructions */
+      n->List = loopNode->List;
+      loopNode->List = n;
+   }
+   return n;
+}
+
+
+static slang_ir_node *
+new_cond(slang_ir_node *n)
+{
+   slang_ir_node *c = new_node1(IR_COND, n);
+   return c;
+}
+
+
+static slang_ir_node *
+new_if(slang_ir_node *cond, slang_ir_node *ifPart, slang_ir_node *elsePart)
+{
+   return new_node3(IR_IF, cond, ifPart, elsePart);
+}
+
+
+/**
+ * New IR_VAR node - a reference to a previously declared variable.
+ */
+static slang_ir_node *
+new_var(slang_assemble_ctx *A, slang_variable *var)
+{
+   slang_ir_node *n = new_node0(IR_VAR);
+   if (n) {
+      ASSERT(var);
+      ASSERT(var->store);
+      ASSERT(!n->Store);
+      ASSERT(!n->Var);
+
+      /* Set IR node's Var and Store pointers */
+      n->Var = var;
+      n->Store = var->store;
+   }
+   return n;
+}
+
+
+/**
+ * Check if the given function is really just a wrapper for a
+ * basic assembly instruction.
+ */
+static GLboolean
+slang_is_asm_function(const slang_function *fun)
+{
+   if (fun->body->type == SLANG_OPER_BLOCK_NO_NEW_SCOPE &&
+       fun->body->num_children == 1 &&
+       fun->body->children[0].type == SLANG_OPER_ASM) {
+      return GL_TRUE;
+   }
+   return GL_FALSE;
+}
+
+
+static GLboolean
+_slang_is_noop(const slang_operation *oper)
+{
+   if (!oper ||
+       oper->type == SLANG_OPER_VOID ||
+       (oper->num_children == 1 && oper->children[0].type == SLANG_OPER_VOID))
+      return GL_TRUE;
+   else
+      return GL_FALSE;
+}
+
+
+/**
+ * Recursively search tree for a node of the given type.
+ */
+#if 0
+static slang_operation *
+_slang_find_node_type(slang_operation *oper, slang_operation_type type)
+{
+   GLuint i;
+   if (oper->type == type)
+      return oper;
+   for (i = 0; i < oper->num_children; i++) {
+      slang_operation *p = _slang_find_node_type(&oper->children[i], type);
+      if (p)
+         return p;
+   }
+   return NULL;
+}
+#endif
+
+
+/**
+ * Count the number of operations of the given time rooted at 'oper'.
+ */
+static GLuint
+_slang_count_node_type(const slang_operation *oper, slang_operation_type type)
+{
+   GLuint i, count = 0;
+   if (oper->type == type) {
+      return 1;
+   }
+   for (i = 0; i < oper->num_children; i++) {
+      count += _slang_count_node_type(&oper->children[i], type);
+   }
+   return count;
+}
+
+
+/**
+ * Check if the 'return' statement found under 'oper' is a "tail return"
+ * that can be no-op'd.  For example:
+ *
+ * void func(void)
+ * {
+ *    .. do something ..
+ *    return;   // this is a no-op
+ * }
+ *
+ * This is used when determining if a function can be inlined.  If the
+ * 'return' is not the last statement, we can't inline the function since
+ * we still need the semantic behaviour of the 'return' but we don't want
+ * to accidentally return from the _calling_ function.  We'd need to use an
+ * unconditional branch, but we don't have such a GPU instruction (not
+ * always, at least).
+ */
+static GLboolean
+_slang_is_tail_return(const slang_operation *oper)
+{
+   GLuint k = oper->num_children;
+
+   while (k > 0) {
+      const slang_operation *last = &oper->children[k - 1];
+      if (last->type == SLANG_OPER_RETURN)
+         return GL_TRUE;
+      else if (last->type == SLANG_OPER_IDENTIFIER ||
+               last->type == SLANG_OPER_LABEL)
+         k--; /* try prev child */
+      else if (last->type == SLANG_OPER_BLOCK_NO_NEW_SCOPE ||
+               last->type == SLANG_OPER_BLOCK_NEW_SCOPE)
+         /* try sub-children */
+         return _slang_is_tail_return(last);
+      else
+         break;
+   }
+
+   return GL_FALSE;
+}
+
+
+/**
+ * Generate a variable declaration opeartion.
+ * I.e.: generate AST code for "bool flag = false;"
+ */
+static void
+slang_generate_declaration(slang_assemble_ctx *A,
+                           slang_variable_scope *scope,
+                           slang_operation *decl,
+                           slang_type_specifier_type type,
+                           const char *name,
+                           GLint initValue)
+{
+   slang_variable *var;
+
+   assert(type == SLANG_SPEC_BOOL ||
+          type == SLANG_SPEC_INT);
+
+   decl->type = SLANG_OPER_VARIABLE_DECL;
+
+   var = slang_variable_scope_grow(scope);
+
+   slang_fully_specified_type_construct(&var->type);
+
+   var->type.specifier.type = type;
+   var->a_name = slang_atom_pool_atom(A->atoms, name);
+   decl->a_id = var->a_name;
+   var->initializer = slang_operation_new(1);
+   slang_operation_literal_bool(var->initializer, initValue);
+}
+
+
+static void
+slang_resolve_variable(slang_operation *oper)
+{
+   if (oper->type == SLANG_OPER_IDENTIFIER && !oper->var) {
+      oper->var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE);
+   }
+}
+
+
+/**
+ * Rewrite AST code for "return expression;".
+ *
+ * We return values from functions by assinging the returned value to
+ * the hidden __retVal variable which is an extra 'out' parameter we add
+ * to the function signature.
+ * This code basically converts "return expr;" into "__retVal = expr; return;"
+ *
+ * \return the new AST code.
+ */
+static slang_operation *
+gen_return_with_expression(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_operation *blockOper, *assignOper;
+
+   assert(oper->type == SLANG_OPER_RETURN);
+
+   if (A->CurFunction->header.type.specifier.type == SLANG_SPEC_VOID) {
+      slang_info_log_error(A->log, "illegal return expression");
+      return NULL;
+   }
+
+   blockOper = slang_operation_new(1);
+   blockOper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
+   blockOper->locals->outer_scope = oper->locals->outer_scope;
+   slang_operation_add_children(blockOper, 2);
+
+   if (A->UseReturnFlag) {
+      /* Emit:
+       *    {
+       *       if (__notRetFlag)
+       *          __retVal = expr;
+       *       __notRetFlag = 0;
+       *    }
+       */
+      {
+         slang_operation *ifOper = slang_oper_child(blockOper, 0);
+         ifOper->type = SLANG_OPER_IF;
+         slang_operation_add_children(ifOper, 3);
+         {
+            slang_operation *cond = slang_oper_child(ifOper, 0);
+            cond->type = SLANG_OPER_IDENTIFIER;
+            cond->a_id = slang_atom_pool_atom(A->atoms, "__notRetFlag");
+         }
+         {
+            slang_operation *elseOper = slang_oper_child(ifOper, 2);
+            elseOper->type = SLANG_OPER_VOID;
+         }
+         assignOper = slang_oper_child(ifOper, 1);
+      }
+      {
+         slang_operation *setOper = slang_oper_child(blockOper, 1);
+         setOper->type = SLANG_OPER_ASSIGN;
+         slang_operation_add_children(setOper, 2);
+         {
+            slang_operation *lhs = slang_oper_child(setOper, 0);
+            lhs->type = SLANG_OPER_IDENTIFIER;
+            lhs->a_id = slang_atom_pool_atom(A->atoms, "__notRetFlag");
+         }
+         {
+            slang_operation *rhs = slang_oper_child(setOper, 1);
+            slang_operation_literal_bool(rhs, GL_FALSE);
+         }
+      }
+   }
+   else {
+      /* Emit:
+       *    {
+       *       __retVal = expr;
+       *       return_inlined;
+       *    }
+       */
+      assignOper = slang_oper_child(blockOper, 0);
+      {
+         slang_operation *returnOper = slang_oper_child(blockOper, 1);
+         returnOper->type = SLANG_OPER_RETURN_INLINED;
+         assert(returnOper->num_children == 0);
+      }
+   }
+
+   /* __retVal = expression; */
+   assignOper->type = SLANG_OPER_ASSIGN;
+   slang_operation_add_children(assignOper, 2);
+   {
+      slang_operation *lhs = slang_oper_child(assignOper, 0);
+      lhs->type = SLANG_OPER_IDENTIFIER;
+      lhs->a_id = slang_atom_pool_atom(A->atoms, "__retVal");
+   }
+   {
+      slang_operation *rhs = slang_oper_child(assignOper, 1);
+      slang_operation_copy(rhs, &oper->children[0]);
+   }
+
+   ///blockOper->locals->outer_scope = oper->locals->outer_scope;
+
+   /*slang_print_tree(blockOper, 0);*/
+
+   return blockOper;
+}
+
+
+/**
+ * Rewrite AST code for "return;" (no expression).
+ */
+static slang_operation *
+gen_return_without_expression(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_operation *newRet;
+
+   assert(oper->type == SLANG_OPER_RETURN);
+
+   if (A->CurFunction->header.type.specifier.type != SLANG_SPEC_VOID) {
+      slang_info_log_error(A->log, "return statement requires an expression");
+      return NULL;
+   }
+
+   if (A->UseReturnFlag) {
+      /* Emit:
+       *    __notRetFlag = 0;
+       */
+      {
+         newRet = slang_operation_new(1);
+         newRet->locals->outer_scope = oper->locals->outer_scope;
+         newRet->type = SLANG_OPER_ASSIGN;
+         slang_operation_add_children(newRet, 2);
+         {
+            slang_operation *lhs = slang_oper_child(newRet, 0);
+            lhs->type = SLANG_OPER_IDENTIFIER;
+            lhs->a_id = slang_atom_pool_atom(A->atoms, "__notRetFlag");
+         }
+         {
+            slang_operation *rhs = slang_oper_child(newRet, 1);
+            slang_operation_literal_bool(rhs, GL_FALSE);
+         }
+      }
+   }
+   else {
+      /* Emit:
+       *    return_inlined;
+       */
+      newRet = slang_operation_new(1);
+      newRet->locals->outer_scope = oper->locals->outer_scope;
+      newRet->type = SLANG_OPER_RETURN_INLINED;
+   }
+
+   /*slang_print_tree(newRet, 0);*/
+
+   return newRet;
+}
+
+
+
+
+/**
+ * Replace particular variables (SLANG_OPER_IDENTIFIER) with new expressions.
+ */
+static void
+slang_substitute(slang_assemble_ctx *A, slang_operation *oper,
+                 GLuint substCount, slang_variable **substOld,
+		 slang_operation **substNew, GLboolean isLHS)
+{
+   switch (oper->type) {
+   case SLANG_OPER_VARIABLE_DECL:
+      {
+         slang_variable *v = _slang_variable_locate(oper->locals,
+                                                    oper->a_id, GL_TRUE);
+         assert(v);
+         if (v->initializer && oper->num_children == 0) {
+            /* set child of oper to copy of initializer */
+            oper->num_children = 1;
+            oper->children = slang_operation_new(1);
+            slang_operation_copy(&oper->children[0], v->initializer);
+         }
+         if (oper->num_children == 1) {
+            /* the initializer */
+            slang_substitute(A, &oper->children[0], substCount,
+                             substOld, substNew, GL_FALSE);
+         }
+      }
+      break;
+   case SLANG_OPER_IDENTIFIER:
+      assert(oper->num_children == 0);
+      if (1/**!isLHS XXX FIX */) {
+         slang_atom id = oper->a_id;
+         slang_variable *v;
+	 GLuint i;
+         v = _slang_variable_locate(oper->locals, id, GL_TRUE);
+	 if (!v) {
+            if (_mesa_strcmp((char *) oper->a_id, "__notRetFlag"))
+               _mesa_problem(NULL, "var %s not found!\n", (char *) oper->a_id);
+            return;
+	 }
+
+	 /* look for a substitution */
+	 for (i = 0; i < substCount; i++) {
+	    if (v == substOld[i]) {
+               /* OK, replace this SLANG_OPER_IDENTIFIER with a new expr */
+#if 0 /* DEBUG only */
+	       if (substNew[i]->type == SLANG_OPER_IDENTIFIER) {
+                  assert(substNew[i]->var);
+                  assert(substNew[i]->var->a_name);
+		  printf("Substitute %s with %s in id node %p\n",
+			 (char*)v->a_name, (char*) substNew[i]->var->a_name,
+			 (void*) oper);
+               }
+	       else {
+		  printf("Substitute %s with %f in id node %p\n",
+			 (char*)v->a_name, substNew[i]->literal[0],
+			 (void*) oper);
+               }
+#endif
+	       slang_operation_copy(oper, substNew[i]);
+	       break;
+	    }
+	 }
+      }
+      break;
+
+   case SLANG_OPER_RETURN:
+      {
+         slang_operation *newReturn;
+         /* generate new 'return' code' */
+         if (slang_oper_child(oper, 0)->type == SLANG_OPER_VOID)
+            newReturn = gen_return_without_expression(A, oper);
+         else
+            newReturn = gen_return_with_expression(A, oper);
+
+         if (!newReturn)
+            return;
+
+         /* do substitutions on the new 'return' code */
+         slang_substitute(A, newReturn,
+                          substCount, substOld, substNew, GL_FALSE);
+
+         /* install new 'return' code */
+         slang_operation_copy(oper, newReturn);
+         slang_operation_destruct(newReturn);
+      }
+      break;
+
+   case SLANG_OPER_ASSIGN:
+   case SLANG_OPER_SUBSCRIPT:
+      /* special case:
+       * child[0] can't have substitutions but child[1] can.
+       */
+      slang_substitute(A, &oper->children[0],
+                       substCount, substOld, substNew, GL_TRUE);
+      slang_substitute(A, &oper->children[1],
+                       substCount, substOld, substNew, GL_FALSE);
+      break;
+   case SLANG_OPER_FIELD:
+      /* XXX NEW - test */
+      slang_substitute(A, &oper->children[0],
+                       substCount, substOld, substNew, GL_TRUE);
+      break;
+   default:
+      {
+         GLuint i;
+         for (i = 0; i < oper->num_children; i++) 
+            slang_substitute(A, &oper->children[i],
+                             substCount, substOld, substNew, GL_FALSE);
+      }
+   }
+}
+
+
+/**
+ * Produce inline code for a call to an assembly instruction.
+ * This is typically used to compile a call to a built-in function like this:
+ *
+ * vec4 mix(const vec4 x, const vec4 y, const vec4 a)
+ * {
+ *    __asm vec4_lrp __retVal, a, y, x;
+ * }
+ *
+ *
+ * A call to
+ *     r = mix(p1, p2, p3);
+ *
+ * Becomes:
+ *
+ *              mov
+ *             /   \
+ *            r   vec4_lrp
+ *                 /  |  \
+ *                p3  p2  p1
+ *
+ * We basically translate a SLANG_OPER_CALL into a SLANG_OPER_ASM.
+ */
+static slang_operation *
+slang_inline_asm_function(slang_assemble_ctx *A,
+                          slang_function *fun, slang_operation *oper)
+{
+   const GLuint numArgs = oper->num_children;
+   GLuint i;
+   slang_operation *inlined;
+   const GLboolean haveRetValue = _slang_function_has_return_value(fun);
+   slang_variable **substOld;
+   slang_operation **substNew;
+
+   ASSERT(slang_is_asm_function(fun));
+   ASSERT(fun->param_count == numArgs + haveRetValue);
+
+   /*
+   printf("Inline %s as %s\n",
+          (char*) fun->header.a_name,
+          (char*) fun->body->children[0].a_id);
+   */
+
+   /*
+    * We'll substitute formal params with actual args in the asm call.
+    */
+   substOld = (slang_variable **)
+      _slang_alloc(numArgs * sizeof(slang_variable *));
+   substNew = (slang_operation **)
+      _slang_alloc(numArgs * sizeof(slang_operation *));
+   for (i = 0; i < numArgs; i++) {
+      substOld[i] = fun->parameters->variables[i];
+      substNew[i] = oper->children + i;
+   }
+
+   /* make a copy of the code to inline */
+   inlined = slang_operation_new(1);
+   slang_operation_copy(inlined, &fun->body->children[0]);
+   if (haveRetValue) {
+      /* get rid of the __retVal child */
+      inlined->num_children--;
+      for (i = 0; i < inlined->num_children; i++) {
+         inlined->children[i] = inlined->children[i + 1];
+      }
+   }
+
+   /* now do formal->actual substitutions */
+   slang_substitute(A, inlined, numArgs, substOld, substNew, GL_FALSE);
+
+   _slang_free(substOld);
+   _slang_free(substNew);
+
+#if 0
+   printf("+++++++++++++ inlined asm function %s +++++++++++++\n",
+          (char *) fun->header.a_name);
+   slang_print_tree(inlined, 3);
+   printf("+++++++++++++++++++++++++++++++++++++++++++++++++++\n");
+#endif
+
+   return inlined;
+}
+
+
+/**
+ * Inline the given function call operation.
+ * Return a new slang_operation that corresponds to the inlined code.
+ */
+static slang_operation *
+slang_inline_function_call(slang_assemble_ctx * A, slang_function *fun,
+			   slang_operation *oper, slang_operation *returnOper)
+{
+   typedef enum {
+      SUBST = 1,
+      COPY_IN,
+      COPY_OUT
+   } ParamMode;
+   ParamMode *paramMode;
+   const GLboolean haveRetValue = _slang_function_has_return_value(fun);
+   const GLuint numArgs = oper->num_children;
+   const GLuint totalArgs = numArgs + haveRetValue;
+   slang_operation *args = oper->children;
+   slang_operation *inlined, *top;
+   slang_variable **substOld;
+   slang_operation **substNew;
+   GLuint substCount, numCopyIn, i;
+   slang_function *prevFunction;
+   slang_variable_scope *newScope = NULL;
+
+   /* save / push */
+   prevFunction = A->CurFunction;
+   A->CurFunction = fun;
+
+   /*assert(oper->type == SLANG_OPER_CALL); (or (matrix) multiply, etc) */
+   assert(fun->param_count == totalArgs);
+
+   /* allocate temporary arrays */
+   paramMode = (ParamMode *)
+      _slang_alloc(totalArgs * sizeof(ParamMode));
+   substOld = (slang_variable **)
+      _slang_alloc(totalArgs * sizeof(slang_variable *));
+   substNew = (slang_operation **)
+      _slang_alloc(totalArgs * sizeof(slang_operation *));
+
+#if 0
+   printf("\nInline call to %s  (total vars=%d  nparams=%d)\n",
+	  (char *) fun->header.a_name,
+	  fun->parameters->num_variables, numArgs);
+#endif
+
+   if (haveRetValue && !returnOper) {
+      /* Create 3-child comma sequence for inlined code:
+       * child[0]:  declare __resultTmp
+       * child[1]:  inlined function body
+       * child[2]:  __resultTmp
+       */
+      slang_operation *commaSeq;
+      slang_operation *declOper = NULL;
+      slang_variable *resultVar;
+
+      commaSeq = slang_operation_new(1);
+      commaSeq->type = SLANG_OPER_SEQUENCE;
+      assert(commaSeq->locals);
+      commaSeq->locals->outer_scope = oper->locals->outer_scope;
+      commaSeq->num_children = 3;
+      commaSeq->children = slang_operation_new(3);
+      /* allocate the return var */
+      resultVar = slang_variable_scope_grow(commaSeq->locals);
+      /*
+      printf("Alloc __resultTmp in scope %p for retval of calling %s\n",
+             (void*)commaSeq->locals, (char *) fun->header.a_name);
+      */
+
+      resultVar->a_name = slang_atom_pool_atom(A->atoms, "__resultTmp");
+      resultVar->type = fun->header.type; /* XXX copy? */
+      resultVar->isTemp = GL_TRUE;
+
+      /* child[0] = __resultTmp declaration */
+      declOper = &commaSeq->children[0];
+      declOper->type = SLANG_OPER_VARIABLE_DECL;
+      declOper->a_id = resultVar->a_name;
+      declOper->locals->outer_scope = commaSeq->locals;
+
+      /* child[1] = function body */
+      inlined = &commaSeq->children[1];
+      inlined->locals->outer_scope = commaSeq->locals;
+
+      /* child[2] = __resultTmp reference */
+      returnOper = &commaSeq->children[2];
+      returnOper->type = SLANG_OPER_IDENTIFIER;
+      returnOper->a_id = resultVar->a_name;
+      returnOper->locals->outer_scope = commaSeq->locals;
+
+      top = commaSeq;
+   }
+   else {
+      top = inlined = slang_operation_new(1);
+      /* XXXX this may be inappropriate!!!! */
+      inlined->locals->outer_scope = oper->locals->outer_scope;
+   }
+
+
+   assert(inlined->locals);
+
+   /* Examine the parameters, look for inout/out params, look for possible
+    * substitutions, etc:
+    *    param type      behaviour
+    *     in             copy actual to local
+    *     const in       substitute param with actual
+    *     out            copy out
+    */
+   substCount = 0;
+   for (i = 0; i < totalArgs; i++) {
+      slang_variable *p = fun->parameters->variables[i];
+      /*
+      printf("Param %d: %s %s \n", i,
+             slang_type_qual_string(p->type.qualifier),
+	     (char *) p->a_name);
+      */
+      if (p->type.qualifier == SLANG_QUAL_INOUT ||
+	  p->type.qualifier == SLANG_QUAL_OUT) {
+	 /* an output param */
+         slang_operation *arg;
+         if (i < numArgs)
+            arg = &args[i];
+         else
+            arg = returnOper;
+	 paramMode[i] = SUBST;
+
+	 if (arg->type == SLANG_OPER_IDENTIFIER)
+            slang_resolve_variable(arg);
+
+         /* replace parameter 'p' with argument 'arg' */
+	 substOld[substCount] = p;
+	 substNew[substCount] = arg; /* will get copied */
+	 substCount++;
+      }
+      else if (p->type.qualifier == SLANG_QUAL_CONST) {
+	 /* a constant input param */
+         if (args[i].type == SLANG_OPER_IDENTIFIER ||
+             args[i].type == SLANG_OPER_LITERAL_FLOAT ||
+             args[i].type == SLANG_OPER_SUBSCRIPT) {
+	    /* replace all occurances of this parameter variable with the
+	     * actual argument variable or a literal.
+	     */
+	    paramMode[i] = SUBST;
+            slang_resolve_variable(&args[i]);
+	    substOld[substCount] = p;
+	    substNew[substCount] = &args[i]; /* will get copied */
+	    substCount++;
+	 }
+	 else {
+	    paramMode[i] = COPY_IN;
+	 }
+      }
+      else {
+	 paramMode[i] = COPY_IN;
+      }
+      assert(paramMode[i]);
+   }
+
+   /* actual code inlining: */
+   slang_operation_copy(inlined, fun->body);
+
+   /*** XXX review this */
+   assert(inlined->type == SLANG_OPER_BLOCK_NO_NEW_SCOPE ||
+          inlined->type == SLANG_OPER_BLOCK_NEW_SCOPE);
+   inlined->type = SLANG_OPER_BLOCK_NEW_SCOPE;
+
+#if 0
+   printf("======================= orig body code ======================\n");
+   printf("=== params scope = %p\n", (void*) fun->parameters);
+   slang_print_tree(fun->body, 8);
+   printf("======================= copied code =========================\n");
+   slang_print_tree(inlined, 8);
+#endif
+
+   /* do parameter substitution in inlined code: */
+   slang_substitute(A, inlined, substCount, substOld, substNew, GL_FALSE);
+
+#if 0
+   printf("======================= subst code ==========================\n");
+   slang_print_tree(inlined, 8);
+   printf("=============================================================\n");
+#endif
+
+   /* New prolog statements: (inserted before the inlined code)
+    * Copy the 'in' arguments.
+    */
+   numCopyIn = 0;
+   for (i = 0; i < numArgs; i++) {
+      if (paramMode[i] == COPY_IN) {
+	 slang_variable *p = fun->parameters->variables[i];
+	 /* declare parameter 'p' */
+	 slang_operation *decl = slang_operation_insert(&inlined->num_children,
+							&inlined->children,
+							numCopyIn);
+
+	 decl->type = SLANG_OPER_VARIABLE_DECL;
+         assert(decl->locals);
+         decl->locals->outer_scope = inlined->locals;
+	 decl->a_id = p->a_name;
+	 decl->num_children = 1;
+	 decl->children = slang_operation_new(1);
+
+         /* child[0] is the var's initializer */
+         slang_operation_copy(&decl->children[0], args + i);
+
+         /* add parameter 'p' to the local variable scope here */
+         {
+            slang_variable *pCopy = slang_variable_scope_grow(inlined->locals);
+            pCopy->type = p->type;
+            pCopy->a_name = p->a_name;
+            pCopy->array_len = p->array_len;
+         }
+
+         newScope = inlined->locals;
+	 numCopyIn++;
+      }
+   }
+
+   /* Now add copies of the function's local vars to the new variable scope */
+   for (i = totalArgs; i < fun->parameters->num_variables; i++) {
+      slang_variable *p = fun->parameters->variables[i];
+      slang_variable *pCopy = slang_variable_scope_grow(inlined->locals);
+      pCopy->type = p->type;
+      pCopy->a_name = p->a_name;
+      pCopy->array_len = p->array_len;
+   }
+
+
+   /* New epilog statements:
+    * 1. Create end of function label to jump to from return statements.
+    * 2. Copy the 'out' parameter vars
+    */
+   {
+      slang_operation *lab = slang_operation_insert(&inlined->num_children,
+                                                    &inlined->children,
+                                                    inlined->num_children);
+      lab->type = SLANG_OPER_LABEL;
+      lab->label = A->curFuncEndLabel;
+   }
+
+   for (i = 0; i < totalArgs; i++) {
+      if (paramMode[i] == COPY_OUT) {
+	 const slang_variable *p = fun->parameters->variables[i];
+	 /* actualCallVar = outParam */
+	 /*if (i > 0 || !haveRetValue)*/
+	 slang_operation *ass = slang_operation_insert(&inlined->num_children,
+						       &inlined->children,
+						       inlined->num_children);
+	 ass->type = SLANG_OPER_ASSIGN;
+	 ass->num_children = 2;
+         ass->locals->outer_scope = inlined->locals;
+	 ass->children = slang_operation_new(2);
+	 ass->children[0] = args[i]; /*XXX copy */
+	 ass->children[1].type = SLANG_OPER_IDENTIFIER;
+	 ass->children[1].a_id = p->a_name;
+         ass->children[1].locals->outer_scope = ass->locals;
+      }
+   }
+
+   _slang_free(paramMode);
+   _slang_free(substOld);
+   _slang_free(substNew);
+
+   /* Update scoping to use the new local vars instead of the
+    * original function's vars.  This is especially important
+    * for nested inlining.
+    */
+   if (newScope)
+      slang_replace_scope(inlined, fun->parameters, newScope);
+
+#if 0
+   printf("Done Inline call to %s  (total vars=%d  nparams=%d)\n\n",
+	  (char *) fun->header.a_name,
+	  fun->parameters->num_variables, numArgs);
+   slang_print_tree(top, 0);
+#endif
+
+   /* pop */
+   A->CurFunction = prevFunction;
+
+   return top;
+}
+
+
+/**
+ * Insert declaration for "bool __notRetFlag" in given block operation.
+ * This is used when we can't emit "early" return statements in subroutines.
+ */
+static void
+declare_return_flag(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_operation *decl;
+
+   assert(oper->type == SLANG_OPER_BLOCK_NEW_SCOPE ||
+          oper->type == SLANG_OPER_SEQUENCE);
+
+   decl = slang_operation_insert_child(oper, 1);
+
+   slang_generate_declaration(A, oper->locals, decl,
+                              SLANG_SPEC_BOOL, "__notRetFlag", GL_TRUE);
+
+   /*slang_print_tree(oper, 0);*/
+}
+
+
+/**
+ * Recursively replace instances of the old node type with the new type.
+ */
+static void
+replace_node_type(slang_operation *oper, slang_operation_type oldType,
+                  slang_operation_type newType)
+{
+   GLuint i;
+
+   if (oper->type == oldType)
+      oper->type = newType;
+
+   for (i = 0; i < slang_oper_num_children(oper); i++) {
+      replace_node_type(slang_oper_child(oper, i), oldType, newType);
+   }
+}
+
+
+
+/**
+ * Test if the given function body has an "early return".  That is, there's
+ * a 'return' statement that's not the very last instruction in the body.
+ */
+static GLboolean
+has_early_return(const slang_operation *funcBody)
+{
+   GLuint retCount = _slang_count_node_type(funcBody, SLANG_OPER_RETURN);
+   if (retCount == 0)
+      return GL_FALSE;
+   else if (retCount == 1 && _slang_is_tail_return(funcBody))
+      return GL_FALSE;
+   else
+      return GL_TRUE;
+}
+
+
+/**
+ * Emit IR code for a function call.  This does one of two things:
+ * 1. Inline the function's code
+ * 2. Create an IR for the function's body and create a real call to it.
+ */
+static slang_ir_node *
+_slang_gen_function_call(slang_assemble_ctx *A, slang_function *fun,
+                         slang_operation *oper, slang_operation *dest)
+{
+   slang_ir_node *n;
+   slang_operation *instance;
+   slang_label *prevFuncEndLabel;
+   char name[200];
+
+   prevFuncEndLabel = A->curFuncEndLabel;
+   sprintf(name, "__endOfFunc_%s_", (char *) fun->header.a_name);
+   A->curFuncEndLabel = _slang_label_new(name);
+   assert(A->curFuncEndLabel);
+
+   /*
+    * 'instance' is basically a copy of the function's body with various
+    * transformations.
+    */
+
+   if (slang_is_asm_function(fun) && !dest) {
+      /* assemble assembly function - tree style */
+      instance = slang_inline_asm_function(A, fun, oper);
+   }
+   else {
+      /* non-assembly function */
+      /* We always generate an "inline-able" block of code here.
+       * We may either:
+       *  1. insert the inline code
+       *  2. Generate a call to the "inline" code as a subroutine
+       */
+      const GLboolean earlyReturn = has_early_return(fun->body);
+
+      if (earlyReturn && !A->EmitContReturn) {
+         A->UseReturnFlag = GL_TRUE;
+      }
+
+      instance = slang_inline_function_call(A, fun, oper, dest);
+      if (!instance)
+         return NULL;
+
+      if (earlyReturn) {
+         /* The function we're calling has one or more 'return' statements
+          * that prevent us from inlining the function's code.
+          *
+          * In this case, change the function's body type from
+          * SLANG_OPER_BLOCK_NEW_SCOPE to SLANG_OPER_NON_INLINED_CALL.
+          * During code emit this will result in a true subroutine call.
+          *
+          * Also, convert SLANG_OPER_RETURN_INLINED nodes to SLANG_OPER_RETURN.
+          */
+         slang_operation *callOper;
+
+         assert(instance->type == SLANG_OPER_BLOCK_NEW_SCOPE ||
+                instance->type == SLANG_OPER_SEQUENCE);
+
+         if (_slang_function_has_return_value(fun) && !dest) {
+            assert(instance->children[0].type == SLANG_OPER_VARIABLE_DECL);
+            assert(instance->children[2].type == SLANG_OPER_IDENTIFIER);
+            callOper = &instance->children[1];
+         }
+         else {
+            callOper = instance;
+         }
+
+         if (A->UseReturnFlag) {
+            /* Early returns not supported.  Create a _returnFlag variable
+             * that's set upon 'return' and tested elsewhere to no-op any
+             * remaining instructions in the subroutine.
+             */
+            assert(callOper->type == SLANG_OPER_BLOCK_NEW_SCOPE ||
+                   callOper->type == SLANG_OPER_SEQUENCE);
+            declare_return_flag(A, callOper);
+         }
+         else {
+            /* We can emit real 'return' statements.  If we generated any
+             * 'inline return' statements during function instantiation,
+             * change them back to regular 'return' statements.
+             */
+            replace_node_type(instance, SLANG_OPER_RETURN_INLINED,
+                              SLANG_OPER_RETURN);
+         }
+
+         callOper->type = SLANG_OPER_NON_INLINED_CALL;
+         callOper->fun = fun;
+         callOper->label = _slang_label_new_unique((char*) fun->header.a_name);
+      }
+      else {
+         /* If there are any 'return' statements remaining, they're at the
+          * very end of the function and can effectively become no-ops.
+          */
+         replace_node_type(instance, SLANG_OPER_RETURN_INLINED,
+                           SLANG_OPER_VOID);
+      }
+   }
+
+   if (!instance)
+      return NULL;
+
+   /* Replace the function call with the instance block (or new CALL stmt) */
+   slang_operation_destruct(oper);
+   *oper = *instance;
+   _slang_free(instance);
+
+#if 0
+   assert(instance->locals);
+   printf("*** Inlined code for call to %s:\n", (char*) fun->header.a_name);
+   slang_print_tree(oper, 10);
+   printf("\n");
+#endif
+
+   n = _slang_gen_operation(A, oper);
+
+   /*_slang_label_delete(A->curFuncEndLabel);*/
+   A->curFuncEndLabel = prevFuncEndLabel;
+
+   if (A->pragmas->Debug) {
+      char s[1000];
+      _mesa_snprintf(s, sizeof(s), "Call/inline %s()", (char *) fun->header.a_name);
+      n->Comment = _slang_strdup(s);
+   }
+
+   A->UseReturnFlag = GL_FALSE;
+
+   return n;
+}
+
+
+static slang_asm_info *
+slang_find_asm_info(const char *name)
+{
+   GLuint i;
+   for (i = 0; AsmInfo[i].Name; i++) {
+      if (_mesa_strcmp(AsmInfo[i].Name, name) == 0) {
+         return AsmInfo + i;
+      }
+   }
+   return NULL;
+}
+
+
+/**
+ * Some write-masked assignments are simple, but others are hard.
+ * Simple example:
+ *    vec3 v;
+ *    v.xy = vec2(a, b);
+ * Hard example:
+ *    vec3 v;
+ *    v.zy = vec2(a, b);
+ * this gets transformed/swizzled into:
+ *    v.zy = vec2(a, b).*yx*         (* = don't care)
+ * This function helps to determine simple vs. non-simple.
+ */
+static GLboolean
+_slang_simple_writemask(GLuint writemask, GLuint swizzle)
+{
+   switch (writemask) {
+   case WRITEMASK_X:
+      return GET_SWZ(swizzle, 0) == SWIZZLE_X;
+   case WRITEMASK_Y:
+      return GET_SWZ(swizzle, 1) == SWIZZLE_Y;
+   case WRITEMASK_Z:
+      return GET_SWZ(swizzle, 2) == SWIZZLE_Z;
+   case WRITEMASK_W:
+      return GET_SWZ(swizzle, 3) == SWIZZLE_W;
+   case WRITEMASK_XY:
+      return (GET_SWZ(swizzle, 0) == SWIZZLE_X)
+         && (GET_SWZ(swizzle, 1) == SWIZZLE_Y);
+   case WRITEMASK_XYZ:
+      return (GET_SWZ(swizzle, 0) == SWIZZLE_X)
+         && (GET_SWZ(swizzle, 1) == SWIZZLE_Y)
+         && (GET_SWZ(swizzle, 2) == SWIZZLE_Z);
+   case WRITEMASK_XYZW:
+      return swizzle == SWIZZLE_NOOP;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Convert the given swizzle into a writemask.  In some cases this
+ * is trivial, in other cases, we'll need to also swizzle the right
+ * hand side to put components in the right places.
+ * See comment above for more info.
+ * XXX this function could be simplified and should probably be renamed.
+ * \param swizzle  the incoming swizzle
+ * \param writemaskOut  returns the writemask
+ * \param swizzleOut  swizzle to apply to the right-hand-side
+ * \return GL_FALSE for simple writemasks, GL_TRUE for non-simple
+ */
+static GLboolean
+swizzle_to_writemask(slang_assemble_ctx *A, GLuint swizzle,
+                     GLuint *writemaskOut, GLuint *swizzleOut)
+{
+   GLuint mask = 0x0, newSwizzle[4];
+   GLint i, size;
+
+   /* make new dst writemask, compute size */
+   for (i = 0; i < 4; i++) {
+      const GLuint swz = GET_SWZ(swizzle, i);
+      if (swz == SWIZZLE_NIL) {
+         /* end */
+         break;
+      }
+      assert(swz >= 0 && swz <= 3);
+
+      if (swizzle != SWIZZLE_XXXX &&
+          swizzle != SWIZZLE_YYYY &&
+          swizzle != SWIZZLE_ZZZZ &&
+          swizzle != SWIZZLE_WWWW &&
+          (mask & (1 << swz))) {
+         /* a channel can't be specified twice (ex: ".xyyz") */
+         slang_info_log_error(A->log, "Invalid writemask '%s'",
+                              _mesa_swizzle_string(swizzle, 0, 0));
+         return GL_FALSE;
+      }
+
+      mask |= (1 << swz);
+   }
+   assert(mask <= 0xf);
+   size = i;  /* number of components in mask/swizzle */
+
+   *writemaskOut = mask;
+
+   /* make new src swizzle, by inversion */
+   for (i = 0; i < 4; i++) {
+      newSwizzle[i] = i; /*identity*/
+   }
+   for (i = 0; i < size; i++) {
+      const GLuint swz = GET_SWZ(swizzle, i);
+      newSwizzle[swz] = i;
+   }
+   *swizzleOut = MAKE_SWIZZLE4(newSwizzle[0],
+                               newSwizzle[1],
+                               newSwizzle[2],
+                               newSwizzle[3]);
+
+   if (_slang_simple_writemask(mask, *swizzleOut)) {
+      if (size >= 1)
+         assert(GET_SWZ(*swizzleOut, 0) == SWIZZLE_X);
+      if (size >= 2)
+         assert(GET_SWZ(*swizzleOut, 1) == SWIZZLE_Y);
+      if (size >= 3)
+         assert(GET_SWZ(*swizzleOut, 2) == SWIZZLE_Z);
+      if (size >= 4)
+         assert(GET_SWZ(*swizzleOut, 3) == SWIZZLE_W);
+      return GL_TRUE;
+   }
+   else
+      return GL_FALSE;
+}
+
+
+#if 0 /* not used, but don't remove just yet */
+/**
+ * Recursively traverse 'oper' to produce a swizzle mask in the event
+ * of any vector subscripts and swizzle suffixes.
+ * Ex:  for "vec4 v",  "v[2].x" resolves to v.z
+ */
+static GLuint
+resolve_swizzle(const slang_operation *oper)
+{
+   if (oper->type == SLANG_OPER_FIELD) {
+      /* writemask from .xyzw suffix */
+      slang_swizzle swz;
+      if (_slang_is_swizzle((char*) oper->a_id, 4, &swz)) {
+         GLuint swizzle = MAKE_SWIZZLE4(swz.swizzle[0],
+                                        swz.swizzle[1],
+                                        swz.swizzle[2],
+                                        swz.swizzle[3]);
+         GLuint child_swizzle = resolve_swizzle(&oper->children[0]);
+         GLuint s = _slang_swizzle_swizzle(child_swizzle, swizzle);
+         return s;
+      }
+      else
+         return SWIZZLE_XYZW;
+   }
+   else if (oper->type == SLANG_OPER_SUBSCRIPT &&
+            oper->children[1].type == SLANG_OPER_LITERAL_INT) {
+      /* writemask from [index] */
+      GLuint child_swizzle = resolve_swizzle(&oper->children[0]);
+      GLuint i = (GLuint) oper->children[1].literal[0];
+      GLuint swizzle;
+      GLuint s;
+      switch (i) {
+      case 0:
+         swizzle = SWIZZLE_XXXX;
+         break;
+      case 1:
+         swizzle = SWIZZLE_YYYY;
+         break;
+      case 2:
+         swizzle = SWIZZLE_ZZZZ;
+         break;
+      case 3:
+         swizzle = SWIZZLE_WWWW;
+         break;
+      default:
+         swizzle = SWIZZLE_XYZW;
+      }
+      s = _slang_swizzle_swizzle(child_swizzle, swizzle);
+      return s;
+   }
+   else {
+      return SWIZZLE_XYZW;
+   }
+}
+#endif
+
+
+#if 0
+/**
+ * Recursively descend through swizzle nodes to find the node's storage info.
+ */
+static slang_ir_storage *
+get_store(const slang_ir_node *n)
+{
+   if (n->Opcode == IR_SWIZZLE) {
+      return get_store(n->Children[0]);
+   }
+   return n->Store;
+}
+#endif
+
+
+/**
+ * Generate IR tree for an asm instruction/operation such as:
+ *    __asm vec4_dot __retVal.x, v1, v2;
+ */
+static slang_ir_node *
+_slang_gen_asm(slang_assemble_ctx *A, slang_operation *oper,
+               slang_operation *dest)
+{
+   const slang_asm_info *info;
+   slang_ir_node *kids[3], *n;
+   GLuint j, firstOperand;
+
+   assert(oper->type == SLANG_OPER_ASM);
+
+   info = slang_find_asm_info((char *) oper->a_id);
+   if (!info) {
+      _mesa_problem(NULL, "undefined __asm function %s\n",
+                    (char *) oper->a_id);
+      assert(info);
+   }
+   assert(info->NumParams <= 3);
+
+   if (info->NumParams == oper->num_children) {
+      /* Storage for result is not specified.
+       * Children[0], [1], [2] are the operands.
+       */
+      firstOperand = 0;
+   }
+   else {
+      /* Storage for result (child[0]) is specified.
+       * Children[1], [2], [3] are the operands.
+       */
+      firstOperand = 1;
+   }
+
+   /* assemble child(ren) */
+   kids[0] = kids[1] = kids[2] = NULL;
+   for (j = 0; j < info->NumParams; j++) {
+      kids[j] = _slang_gen_operation(A, &oper->children[firstOperand + j]);
+      if (!kids[j])
+         return NULL;
+   }
+
+   n = new_node3(info->Opcode, kids[0], kids[1], kids[2]);
+
+   if (firstOperand) {
+      /* Setup n->Store to be a particular location.  Otherwise, storage
+       * for the result (a temporary) will be allocated later.
+       */
+      slang_operation *dest_oper;
+      slang_ir_node *n0;
+
+      dest_oper = &oper->children[0];
+
+      n0 = _slang_gen_operation(A, dest_oper);
+      if (!n0)
+         return NULL;
+
+      assert(!n->Store);
+      n->Store = n0->Store;
+
+      assert(n->Store->File != PROGRAM_UNDEFINED || n->Store->Parent);
+
+      _slang_free(n0);
+   }
+
+   return n;
+}
+
+
+#if 0
+static void
+print_funcs(struct slang_function_scope_ *scope, const char *name)
+{
+   GLuint i;
+   for (i = 0; i < scope->num_functions; i++) {
+      slang_function *f = &scope->functions[i];
+      if (!name || strcmp(name, (char*) f->header.a_name) == 0)
+          printf("  %s (%d args)\n", name, f->param_count);
+
+   }
+   if (scope->outer_scope)
+      print_funcs(scope->outer_scope, name);
+}
+#endif
+
+
+/**
+ * Find a function of the given name, taking 'numArgs' arguments.
+ * This is the function we'll try to call when there is no exact match
+ * between function parameters and call arguments.
+ *
+ * XXX we should really create a list of candidate functions and try
+ * all of them...
+ */
+static slang_function *
+_slang_find_function_by_argc(slang_function_scope *scope,
+                             const char *name, int numArgs)
+{
+   while (scope) {
+      GLuint i;
+      for (i = 0; i < scope->num_functions; i++) {
+         slang_function *f = &scope->functions[i];
+         if (strcmp(name, (char*) f->header.a_name) == 0) {
+            int haveRetValue = _slang_function_has_return_value(f);
+            if (numArgs == f->param_count - haveRetValue)
+               return f;
+         }
+      }
+      scope = scope->outer_scope;
+   }
+
+   return NULL;
+}
+
+
+static slang_function *
+_slang_find_function_by_max_argc(slang_function_scope *scope,
+                                 const char *name)
+{
+   slang_function *maxFunc = NULL;
+   GLuint maxArgs = 0;
+
+   while (scope) {
+      GLuint i;
+      for (i = 0; i < scope->num_functions; i++) {
+         slang_function *f = &scope->functions[i];
+         if (strcmp(name, (char*) f->header.a_name) == 0) {
+            if (f->param_count > maxArgs) {
+               maxArgs = f->param_count;
+               maxFunc = f;
+            }
+         }
+      }
+      scope = scope->outer_scope;
+   }
+
+   return maxFunc;
+}
+
+
+/**
+ * Generate a new slang_function which is a constructor for a user-defined
+ * struct type.
+ */
+static slang_function *
+_slang_make_struct_constructor(slang_assemble_ctx *A, slang_struct *str)
+{
+   const GLint numFields = str->fields->num_variables;
+   slang_function *fun = slang_function_new(SLANG_FUNC_CONSTRUCTOR);
+
+   /* function header (name, return type) */
+   fun->header.a_name = str->a_name;
+   fun->header.type.qualifier = SLANG_QUAL_NONE;
+   fun->header.type.specifier.type = SLANG_SPEC_STRUCT;
+   fun->header.type.specifier._struct = str;
+
+   /* function parameters (= struct's fields) */
+   {
+      GLint i;
+      for (i = 0; i < numFields; i++) {
+         /*
+         printf("Field %d: %s\n", i, (char*) str->fields->variables[i]->a_name);
+         */
+         slang_variable *p = slang_variable_scope_grow(fun->parameters);
+         *p = *str->fields->variables[i]; /* copy the variable and type */
+         p->type.qualifier = SLANG_QUAL_CONST;
+      }
+      fun->param_count = fun->parameters->num_variables;
+   }
+
+   /* Add __retVal to params */
+   {
+      slang_variable *p = slang_variable_scope_grow(fun->parameters);
+      slang_atom a_retVal = slang_atom_pool_atom(A->atoms, "__retVal");
+      assert(a_retVal);
+      p->a_name = a_retVal;
+      p->type = fun->header.type;
+      p->type.qualifier = SLANG_QUAL_OUT;
+      fun->param_count++;
+   }
+
+   /* function body is:
+    *    block:
+    *       declare T;
+    *       T.f1 = p1;
+    *       T.f2 = p2;
+    *       ...
+    *       T.fn = pn;
+    *       return T;
+    */
+   {
+      slang_variable_scope *scope;
+      slang_variable *var;
+      GLint i;
+
+      fun->body = slang_operation_new(1);
+      fun->body->type = SLANG_OPER_BLOCK_NEW_SCOPE;
+      fun->body->num_children = numFields + 2;
+      fun->body->children = slang_operation_new(numFields + 2);
+
+      scope = fun->body->locals;
+      scope->outer_scope = fun->parameters;
+
+      /* create local var 't' */
+      var = slang_variable_scope_grow(scope);
+      var->a_name = slang_atom_pool_atom(A->atoms, "t");
+      var->type = fun->header.type;
+
+      /* declare t */
+      {
+         slang_operation *decl;
+
+         decl = &fun->body->children[0];
+         decl->type = SLANG_OPER_VARIABLE_DECL;
+         decl->locals = _slang_variable_scope_new(scope);
+         decl->a_id = var->a_name;
+      }
+
+      /* assign params to fields of t */
+      for (i = 0; i < numFields; i++) {
+         slang_operation *assign = &fun->body->children[1 + i];
+
+         assign->type = SLANG_OPER_ASSIGN;
+         assign->locals = _slang_variable_scope_new(scope);
+         assign->num_children = 2;
+         assign->children = slang_operation_new(2);
+         
+         {
+            slang_operation *lhs = &assign->children[0];
+
+            lhs->type = SLANG_OPER_FIELD;
+            lhs->locals = _slang_variable_scope_new(scope);
+            lhs->num_children = 1;
+            lhs->children = slang_operation_new(1);
+            lhs->a_id = str->fields->variables[i]->a_name;
+
+            lhs->children[0].type = SLANG_OPER_IDENTIFIER;
+            lhs->children[0].a_id = var->a_name;
+            lhs->children[0].locals = _slang_variable_scope_new(scope);
+
+#if 0
+            lhs->children[1].num_children = 1;
+            lhs->children[1].children = slang_operation_new(1);
+            lhs->children[1].children[0].type = SLANG_OPER_IDENTIFIER;
+            lhs->children[1].children[0].a_id = str->fields->variables[i]->a_name;
+            lhs->children[1].children->locals = _slang_variable_scope_new(scope);
+#endif
+         }
+
+         {
+            slang_operation *rhs = &assign->children[1];
+
+            rhs->type = SLANG_OPER_IDENTIFIER;
+            rhs->locals = _slang_variable_scope_new(scope);
+            rhs->a_id = str->fields->variables[i]->a_name;
+         }         
+      }
+
+      /* return t; */
+      {
+         slang_operation *ret = &fun->body->children[numFields + 1];
+
+         ret->type = SLANG_OPER_RETURN;
+         ret->locals = _slang_variable_scope_new(scope);
+         ret->num_children = 1;
+         ret->children = slang_operation_new(1);
+         ret->children[0].type = SLANG_OPER_IDENTIFIER;
+         ret->children[0].a_id = var->a_name;
+         ret->children[0].locals = _slang_variable_scope_new(scope);
+      }
+   }
+   /*
+   slang_print_function(fun, 1);
+   */
+   return fun;
+}
+
+
+/**
+ * Find/create a function (constructor) for the given structure name.
+ */
+static slang_function *
+_slang_locate_struct_constructor(slang_assemble_ctx *A, const char *name)
+{
+   unsigned int i;
+   for (i = 0; i < A->space.structs->num_structs; i++) {
+      slang_struct *str = &A->space.structs->structs[i];
+      if (strcmp(name, (const char *) str->a_name) == 0) {
+         /* found a structure type that matches the function name */
+         if (!str->constructor) {
+            /* create the constructor function now */
+            str->constructor = _slang_make_struct_constructor(A, str);
+         }
+         return str->constructor;
+      }
+   }
+   return NULL;
+}
+
+
+/**
+ * Generate a new slang_function to satisfy a call to an array constructor.
+ * Ex:  float[3](1., 2., 3.)
+ */
+static slang_function *
+_slang_make_array_constructor(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_type_specifier_type baseType;
+   slang_function *fun;
+   int num_elements;
+
+   fun = slang_function_new(SLANG_FUNC_CONSTRUCTOR);
+   if (!fun)
+      return NULL;
+
+   baseType = slang_type_specifier_type_from_string((char *) oper->a_id);
+
+   num_elements = oper->num_children;
+
+   /* function header, return type */
+   {
+      fun->header.a_name = oper->a_id;
+      fun->header.type.qualifier = SLANG_QUAL_NONE;
+      fun->header.type.specifier.type = SLANG_SPEC_ARRAY;
+      fun->header.type.specifier._array =
+         slang_type_specifier_new(baseType, NULL, NULL);
+      fun->header.type.array_len = num_elements;
+   }
+
+   /* function parameters (= number of elements) */
+   {
+      GLint i;
+      for (i = 0; i < num_elements; i++) {
+         /*
+         printf("Field %d: %s\n", i, (char*) str->fields->variables[i]->a_name);
+         */
+         slang_variable *p = slang_variable_scope_grow(fun->parameters);
+         char name[10];
+         _mesa_snprintf(name, sizeof(name), "p%d", i);
+         p->a_name = slang_atom_pool_atom(A->atoms, name);
+         p->type.qualifier = SLANG_QUAL_CONST;
+         p->type.specifier.type = baseType;
+      }
+      fun->param_count = fun->parameters->num_variables;
+   }
+
+   /* Add __retVal to params */
+   {
+      slang_variable *p = slang_variable_scope_grow(fun->parameters);
+      slang_atom a_retVal = slang_atom_pool_atom(A->atoms, "__retVal");
+      assert(a_retVal);
+      p->a_name = a_retVal;
+      p->type = fun->header.type;
+      p->type.qualifier = SLANG_QUAL_OUT;
+      p->type.specifier.type = baseType;
+      fun->param_count++;
+   }
+
+   /* function body is:
+    *    block:
+    *       declare T;
+    *       T[0] = p0;
+    *       T[1] = p1;
+    *       ...
+    *       T[n] = pn;
+    *       return T;
+    */
+   {
+      slang_variable_scope *scope;
+      slang_variable *var;
+      GLint i;
+
+      fun->body = slang_operation_new(1);
+      fun->body->type = SLANG_OPER_BLOCK_NEW_SCOPE;
+      fun->body->num_children = num_elements + 2;
+      fun->body->children = slang_operation_new(num_elements + 2);
+
+      scope = fun->body->locals;
+      scope->outer_scope = fun->parameters;
+
+      /* create local var 't' */
+      var = slang_variable_scope_grow(scope);
+      var->a_name = slang_atom_pool_atom(A->atoms, "ttt");
+      var->type = fun->header.type;/*XXX copy*/
+
+      /* declare t */
+      {
+         slang_operation *decl;
+
+         decl = &fun->body->children[0];
+         decl->type = SLANG_OPER_VARIABLE_DECL;
+         decl->locals = _slang_variable_scope_new(scope);
+         decl->a_id = var->a_name;
+      }
+
+      /* assign params to elements of t */
+      for (i = 0; i < num_elements; i++) {
+         slang_operation *assign = &fun->body->children[1 + i];
+
+         assign->type = SLANG_OPER_ASSIGN;
+         assign->locals = _slang_variable_scope_new(scope);
+         assign->num_children = 2;
+         assign->children = slang_operation_new(2);
+         
+         {
+            slang_operation *lhs = &assign->children[0];
+
+            lhs->type = SLANG_OPER_SUBSCRIPT;
+            lhs->locals = _slang_variable_scope_new(scope);
+            lhs->num_children = 2;
+            lhs->children = slang_operation_new(2);
+ 
+            lhs->children[0].type = SLANG_OPER_IDENTIFIER;
+            lhs->children[0].a_id = var->a_name;
+            lhs->children[0].locals = _slang_variable_scope_new(scope);
+
+            lhs->children[1].type = SLANG_OPER_LITERAL_INT;
+            lhs->children[1].literal[0] = (GLfloat) i;
+         }
+
+         {
+            slang_operation *rhs = &assign->children[1];
+
+            rhs->type = SLANG_OPER_IDENTIFIER;
+            rhs->locals = _slang_variable_scope_new(scope);
+            rhs->a_id = fun->parameters->variables[i]->a_name;
+         }         
+      }
+
+      /* return t; */
+      {
+         slang_operation *ret = &fun->body->children[num_elements + 1];
+
+         ret->type = SLANG_OPER_RETURN;
+         ret->locals = _slang_variable_scope_new(scope);
+         ret->num_children = 1;
+         ret->children = slang_operation_new(1);
+         ret->children[0].type = SLANG_OPER_IDENTIFIER;
+         ret->children[0].a_id = var->a_name;
+         ret->children[0].locals = _slang_variable_scope_new(scope);
+      }
+   }
+
+   /*
+   slang_print_function(fun, 1);
+   */
+
+   return fun;
+}
+
+
+static GLboolean
+_slang_is_vec_mat_type(const char *name)
+{
+   static const char *vecmat_types[] = {
+      "float", "int", "bool",
+      "vec2", "vec3", "vec4",
+      "ivec2", "ivec3", "ivec4",
+      "bvec2", "bvec3", "bvec4",
+      "mat2", "mat3", "mat4",
+      "mat2x3", "mat2x4", "mat3x2", "mat3x4", "mat4x2", "mat4x3",
+      NULL
+   };
+   int i;
+   for (i = 0; vecmat_types[i]; i++)
+      if (_mesa_strcmp(name, vecmat_types[i]) == 0)
+         return GL_TRUE;
+   return GL_FALSE;
+}
+
+
+/**
+ * Assemble a function call, given a particular function name.
+ * \param name  the function's name (operators like '*' are possible).
+ */
+static slang_ir_node *
+_slang_gen_function_call_name(slang_assemble_ctx *A, const char *name,
+                              slang_operation *oper, slang_operation *dest)
+{
+   slang_operation *params = oper->children;
+   const GLuint param_count = oper->num_children;
+   slang_atom atom;
+   slang_function *fun;
+   slang_ir_node *n;
+
+   atom = slang_atom_pool_atom(A->atoms, name);
+   if (atom == SLANG_ATOM_NULL)
+      return NULL;
+
+   if (oper->array_constructor) {
+      /* this needs special handling */
+      fun = _slang_make_array_constructor(A, oper);
+   }
+   else {
+      /* Try to find function by name and exact argument type matching */
+      GLboolean error = GL_FALSE;
+      fun = _slang_function_locate(A->space.funcs, atom, params, param_count,
+                                   &A->space, A->atoms, A->log, &error);
+      if (error) {
+         slang_info_log_error(A->log,
+                              "Function '%s' not found (check argument types)",
+                              name);
+         return NULL;
+      }
+   }
+
+   if (!fun) {
+      /* Next, try locating a constructor function for a user-defined type */
+      fun = _slang_locate_struct_constructor(A, name);
+   }
+
+   /*
+    * At this point, some heuristics are used to try to find a function
+    * that matches the calling signature by means of casting or "unrolling"
+    * of constructors.
+    */
+
+   if (!fun && _slang_is_vec_mat_type(name)) {
+      /* Next, if this call looks like a vec() or mat() constructor call,
+       * try "unwinding" the args to satisfy a constructor.
+       */
+      fun = _slang_find_function_by_max_argc(A->space.funcs, name);
+      if (fun) {
+         if (!_slang_adapt_call(oper, fun, &A->space, A->atoms, A->log)) {
+            slang_info_log_error(A->log,
+                                 "Function '%s' not found (check argument types)",
+                                 name);
+            return NULL;
+         }
+      }
+   }
+
+   if (!fun && _slang_is_vec_mat_type(name)) {
+      /* Next, try casting args to the types of the formal parameters */
+      int numArgs = oper->num_children;
+      fun = _slang_find_function_by_argc(A->space.funcs, name, numArgs);
+      if (!fun || !_slang_cast_func_params(oper, fun, &A->space, A->atoms, A->log)) {
+         slang_info_log_error(A->log,
+                              "Function '%s' not found (check argument types)",
+                              name);
+         return NULL;
+      }
+      assert(fun);
+   }
+
+   if (!fun) {
+      slang_info_log_error(A->log,
+                           "Function '%s' not found (check argument types)",
+                           name);
+      return NULL;
+   }
+
+   if (!fun->body) {
+      /* The function body may be in another compilation unit.
+       * We'll try concatenating the shaders and recompile at link time.
+       */
+      A->UnresolvedRefs = GL_TRUE;
+      return new_node1(IR_NOP, NULL);
+   }
+
+   /* type checking to be sure function's return type matches 'dest' type */
+   if (dest) {
+      slang_typeinfo t0;
+
+      slang_typeinfo_construct(&t0);
+      typeof_operation(A, dest, &t0);
+
+      if (!slang_type_specifier_equal(&t0.spec, &fun->header.type.specifier)) {
+         slang_info_log_error(A->log,
+                              "Incompatible type returned by call to '%s'",
+                              name);
+         return NULL;
+      }
+   }
+
+   n = _slang_gen_function_call(A, fun, oper, dest);
+
+   if (n && !n->Store && !dest
+       && fun->header.type.specifier.type != SLANG_SPEC_VOID) {
+      /* setup n->Store for the result of the function call */
+      GLint size = _slang_sizeof_type_specifier(&fun->header.type.specifier);
+      n->Store = _slang_new_ir_storage(PROGRAM_TEMPORARY, -1, size);
+      /*printf("Alloc storage for function result, size %d \n", size);*/
+   }
+
+   if (oper->array_constructor) {
+      /* free the temporary array constructor function now */
+      slang_function_destruct(fun);
+   }
+
+   return n;
+}
+
+
+static slang_ir_node *
+_slang_gen_method_call(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_atom *a_length = slang_atom_pool_atom(A->atoms, "length");
+   slang_ir_node *n;
+   slang_variable *var;
+
+   /* NOTE: In GLSL 1.20, there's only one kind of method
+    * call: array.length().  Anything else is an error.
+    */
+   if (oper->a_id != a_length) {
+      slang_info_log_error(A->log,
+                           "Undefined method call '%s'", (char *) oper->a_id);
+      return NULL;
+   }
+
+   /* length() takes no arguments */
+   if (oper->num_children > 0) {
+      slang_info_log_error(A->log, "Invalid arguments to length() method");
+      return NULL;
+   }
+
+   /* lookup the object/variable */
+   var = _slang_variable_locate(oper->locals, oper->a_obj, GL_TRUE);
+   if (!var || var->type.specifier.type != SLANG_SPEC_ARRAY) {
+      slang_info_log_error(A->log,
+                           "Undefined object '%s'", (char *) oper->a_obj);
+      return NULL;
+   }
+
+   /* Create a float/literal IR node encoding the array length */
+   n = new_node0(IR_FLOAT);
+   if (n) {
+      n->Value[0] = (float) _slang_array_length(var);
+      n->Store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, 1);
+   }
+   return n;
+}
+
+
+static GLboolean
+_slang_is_constant_cond(const slang_operation *oper, GLboolean *value)
+{
+   if (oper->type == SLANG_OPER_LITERAL_FLOAT ||
+       oper->type == SLANG_OPER_LITERAL_INT ||
+       oper->type == SLANG_OPER_LITERAL_BOOL) {
+      if (oper->literal[0])
+         *value = GL_TRUE;
+      else
+         *value = GL_FALSE;
+      return GL_TRUE;
+   }
+   else if (oper->type == SLANG_OPER_EXPRESSION &&
+            oper->num_children == 1) {
+      return _slang_is_constant_cond(&oper->children[0], value);
+   }
+   return GL_FALSE;
+}
+
+
+/**
+ * Test if an operation is a scalar or boolean.
+ */
+static GLboolean
+_slang_is_scalar_or_boolean(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_typeinfo type;
+   GLint size;
+
+   slang_typeinfo_construct(&type);
+   typeof_operation(A, oper, &type);
+   size = _slang_sizeof_type_specifier(&type.spec);
+   slang_typeinfo_destruct(&type);
+   return size == 1;
+}
+
+
+/**
+ * Test if an operation is boolean.
+ */
+static GLboolean
+_slang_is_boolean(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_typeinfo type;
+   GLboolean isBool;
+
+   slang_typeinfo_construct(&type);
+   typeof_operation(A, oper, &type);
+   isBool = (type.spec.type == SLANG_SPEC_BOOL);
+   slang_typeinfo_destruct(&type);
+   return isBool;
+}
+
+
+/**
+ * Check if a loop contains a 'continue' statement.
+ * Stop looking if we find a nested loop.
+ */
+static GLboolean
+_slang_loop_contains_continue(const slang_operation *oper)
+{
+   switch (oper->type) {
+   case SLANG_OPER_CONTINUE:
+      return GL_TRUE;
+   case SLANG_OPER_FOR:
+   case SLANG_OPER_DO:
+   case SLANG_OPER_WHILE:
+      /* stop upon finding a nested loop */
+      return GL_FALSE;
+   default:
+       /* recurse */
+      {
+         GLuint i;
+         for (i = 0; i < oper->num_children; i++) {
+            const slang_operation *child = slang_oper_child_const(oper, i);
+            if (_slang_loop_contains_continue(child))
+               return GL_TRUE;
+         }
+      }
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Check if a loop contains a 'continue' or 'break' statement.
+ * Stop looking if we find a nested loop.
+ */
+static GLboolean
+_slang_loop_contains_continue_or_break(const slang_operation *oper)
+{
+   switch (oper->type) {
+   case SLANG_OPER_CONTINUE:
+   case SLANG_OPER_BREAK:
+      return GL_TRUE;
+   case SLANG_OPER_FOR:
+   case SLANG_OPER_DO:
+   case SLANG_OPER_WHILE:
+      /* stop upon finding a nested loop */
+      return GL_FALSE;
+   default:
+       /* recurse */
+      {
+         GLuint i;
+         for (i = 0; i < oper->num_children; i++) {
+            const slang_operation *child = slang_oper_child_const(oper, i);
+            if (_slang_loop_contains_continue_or_break(child))
+               return GL_TRUE;
+         }
+      }
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Replace 'break' and 'continue' statements inside a do and while loops.
+ * This is a recursive helper function used by
+ * _slang_gen_do/while_without_continue().
+ */
+static void
+replace_break_and_cont(slang_assemble_ctx *A, slang_operation *oper)
+{
+   switch (oper->type) {
+   case SLANG_OPER_BREAK:
+      /* replace 'break' with "_notBreakFlag = false; break" */
+      {
+         slang_operation *block = oper;
+         block->type = SLANG_OPER_BLOCK_NEW_SCOPE;
+         slang_operation_add_children(block, 2);
+         {
+            slang_operation *assign = slang_oper_child(block, 0);
+            assign->type = SLANG_OPER_ASSIGN;
+            slang_operation_add_children(assign, 2);
+            {
+               slang_operation *lhs = slang_oper_child(assign, 0);
+               slang_operation_identifier(lhs, A, "_notBreakFlag");
+            }
+            {
+               slang_operation *rhs = slang_oper_child(assign, 1);
+               slang_operation_literal_bool(rhs, GL_FALSE);
+            }
+         }
+         {
+            slang_operation *brk = slang_oper_child(block, 1);
+            brk->type = SLANG_OPER_BREAK;
+            assert(!brk->children);
+         }
+      }
+      break;
+   case SLANG_OPER_CONTINUE:
+      /* convert continue into a break */
+      oper->type = SLANG_OPER_BREAK;
+      break;
+   case SLANG_OPER_FOR:
+   case SLANG_OPER_DO:
+   case SLANG_OPER_WHILE:
+      /* stop upon finding a nested loop */
+      break;
+   default:
+      /* recurse */
+      {
+         GLuint i;
+         for (i = 0; i < oper->num_children; i++) {
+            replace_break_and_cont(A, slang_oper_child(oper, i));
+         }
+      }
+   }
+}
+
+
+/**
+ * Transform a while-loop so that continue statements are converted to breaks.
+ * Then do normal IR code generation.
+ *
+ * Before:
+ * 
+ * while (LOOPCOND) {
+ *    A;
+ *    if (IFCOND)
+ *       continue;
+ *    B;
+ *    break;
+ *    C;
+ * }
+ * 
+ * After:
+ * 
+ * {
+ *    bool _notBreakFlag = 1;
+ *    while (_notBreakFlag && LOOPCOND) {
+ *       do {
+ *          A;
+ *          if (IFCOND) {
+ *             break;  // was continue
+ *          }
+ *          B;
+ *          _notBreakFlag = 0; // was
+ *          break;             // break
+ *          C;
+ *       } while (0)
+ *    }
+ * }
+ */
+static slang_ir_node *
+_slang_gen_while_without_continue(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_operation *top;
+   slang_operation *innerBody;
+
+   assert(oper->type == SLANG_OPER_WHILE);
+
+   top = slang_operation_new(1);
+   top->type = SLANG_OPER_BLOCK_NEW_SCOPE;
+   top->locals->outer_scope = oper->locals->outer_scope;
+   slang_operation_add_children(top, 2);
+
+   /* declare: bool _notBreakFlag = true */
+   {
+      slang_operation *condDecl = slang_oper_child(top, 0);
+      slang_generate_declaration(A, top->locals, condDecl,
+                                 SLANG_SPEC_BOOL, "_notBreakFlag", GL_TRUE);
+   }
+
+   /* build outer while-loop:  while (_notBreakFlag && LOOPCOND) { ... } */
+   {
+      slang_operation *outerWhile = slang_oper_child(top, 1);
+      outerWhile->type = SLANG_OPER_WHILE;
+      slang_operation_add_children(outerWhile, 2);
+
+      /* _notBreakFlag && LOOPCOND */
+      {
+         slang_operation *cond = slang_oper_child(outerWhile, 0);
+         cond->type = SLANG_OPER_LOGICALAND;
+         slang_operation_add_children(cond, 2);
+         {
+            slang_operation *notBreak = slang_oper_child(cond, 0);
+            slang_operation_identifier(notBreak, A, "_notBreakFlag");
+         }
+         {
+            slang_operation *origCond = slang_oper_child(cond, 1);
+            slang_operation_copy(origCond, slang_oper_child(oper, 0));
+         }
+      }
+
+      /* inner loop */
+      {
+         slang_operation *innerDo = slang_oper_child(outerWhile, 1);
+         innerDo->type = SLANG_OPER_DO;
+         slang_operation_add_children(innerDo, 2);
+
+         /* copy original do-loop body into inner do-loop's body */
+         innerBody = slang_oper_child(innerDo, 0);
+         slang_operation_copy(innerBody, slang_oper_child(oper, 1));
+         innerBody->locals->outer_scope = innerDo->locals;
+
+         /* inner do-loop's condition is constant/false */
+         {
+            slang_operation *constFalse = slang_oper_child(innerDo, 1);
+            slang_operation_literal_bool(constFalse, GL_FALSE);
+         }
+      }
+   }
+
+   /* Finally, in innerBody,
+    *   replace "break" with "_notBreakFlag = 0; break"
+    *   replace "continue" with "break"
+    */
+   replace_break_and_cont(A, innerBody);
+
+   /*slang_print_tree(top, 0);*/
+
+   return _slang_gen_operation(A, top);
+
+   return NULL;
+}
+
+
+/**
+ * Generate loop code using high-level IR_LOOP instruction
+ */
+static slang_ir_node *
+_slang_gen_while(slang_assemble_ctx * A, slang_operation *oper)
+{
+   /*
+    * LOOP:
+    *    BREAK if !expr (child[0])
+    *    body code (child[1])
+    */
+   slang_ir_node *loop, *breakIf, *body;
+   GLboolean isConst, constTrue = GL_FALSE;
+
+   if (!A->EmitContReturn) {
+      /* We don't want to emit CONT instructions.  If this while-loop has
+       * a continue, translate it away.
+       */
+      if (_slang_loop_contains_continue(slang_oper_child(oper, 1))) {
+         return _slang_gen_while_without_continue(A, oper);
+      }
+   }
+
+   /* type-check expression */
+   if (!_slang_is_boolean(A, &oper->children[0])) {
+      slang_info_log_error(A->log, "scalar/boolean expression expected for 'while'");
+      return NULL;
+   }
+
+   /* Check if loop condition is a constant */
+   isConst = _slang_is_constant_cond(&oper->children[0], &constTrue);
+
+   if (isConst && !constTrue) {
+      /* loop is never executed! */
+      return new_node0(IR_NOP);
+   }
+
+   /* Begin new loop */
+   loop = new_loop(NULL);
+
+   /* save loop state */
+   push_loop(A, oper, loop);
+
+   if (isConst && constTrue) {
+      /* while(nonzero constant), no conditional break */
+      breakIf = NULL;
+   }
+   else {
+      slang_ir_node *cond
+         = new_cond(new_not(_slang_gen_operation(A, &oper->children[0])));
+      breakIf = new_break_if_true(A, cond);
+   }
+   body = _slang_gen_operation(A, &oper->children[1]);
+   loop->Children[0] = new_seq(breakIf, body);
+
+   /* Do infinite loop detection */
+   /* loop->List is head of linked list of break/continue nodes */
+   if (!loop->List && isConst && constTrue) {
+      /* infinite loop detected */
+      pop_loop(A);
+      slang_info_log_error(A->log, "Infinite loop detected!");
+      return NULL;
+   }
+
+   /* restore loop state */
+   pop_loop(A);
+
+   return loop;
+}
+
+
+/**
+ * Transform a do-while-loop so that continue statements are converted to breaks.
+ * Then do normal IR code generation.
+ *
+ * Before:
+ * 
+ * do {
+ *    A;
+ *    if (IFCOND)
+ *       continue;
+ *    B;
+ *    break;
+ *    C;
+ * } while (LOOPCOND);
+ * 
+ * After:
+ * 
+ * {
+ *    bool _notBreakFlag = 1;
+ *    do {
+ *       do {
+ *          A;
+ *          if (IFCOND) {
+ *             break;  // was continue
+ *          }
+ *          B;
+ *          _notBreakFlag = 0; // was
+ *          break;             // break
+ *          C;
+ *       } while (0)
+ *    } while (_notBreakFlag && LOOPCOND);
+ * }
+ */
+static slang_ir_node *
+_slang_gen_do_without_continue(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_operation *top;
+   slang_operation *innerBody;
+
+   assert(oper->type == SLANG_OPER_DO);
+
+   top = slang_operation_new(1);
+   top->type = SLANG_OPER_BLOCK_NEW_SCOPE;
+   top->locals->outer_scope = oper->locals->outer_scope;
+   slang_operation_add_children(top, 2);
+
+   /* declare: bool _notBreakFlag = true */
+   {
+      slang_operation *condDecl = slang_oper_child(top, 0);
+      slang_generate_declaration(A, top->locals, condDecl,
+                                 SLANG_SPEC_BOOL, "_notBreakFlag", GL_TRUE);
+   }
+
+   /* build outer do-loop:  do { ... } while (_notBreakFlag && LOOPCOND) */
+   {
+      slang_operation *outerDo = slang_oper_child(top, 1);
+      outerDo->type = SLANG_OPER_DO;
+      slang_operation_add_children(outerDo, 2);
+
+      /* inner do-loop */
+      {
+         slang_operation *innerDo = slang_oper_child(outerDo, 0);
+         innerDo->type = SLANG_OPER_DO;
+         slang_operation_add_children(innerDo, 2);
+
+         /* copy original do-loop body into inner do-loop's body */
+         innerBody = slang_oper_child(innerDo, 0);
+         slang_operation_copy(innerBody, slang_oper_child(oper, 0));
+         innerBody->locals->outer_scope = innerDo->locals;
+
+         /* inner do-loop's condition is constant/false */
+         {
+            slang_operation *constFalse = slang_oper_child(innerDo, 1);
+            slang_operation_literal_bool(constFalse, GL_FALSE);
+         }
+      }
+
+      /* _notBreakFlag && LOOPCOND */
+      {
+         slang_operation *cond = slang_oper_child(outerDo, 1);
+         cond->type = SLANG_OPER_LOGICALAND;
+         slang_operation_add_children(cond, 2);
+         {
+            slang_operation *notBreak = slang_oper_child(cond, 0);
+            slang_operation_identifier(notBreak, A, "_notBreakFlag");
+         }
+         {
+            slang_operation *origCond = slang_oper_child(cond, 1);
+            slang_operation_copy(origCond, slang_oper_child(oper, 1));
+         }
+      }
+   }
+
+   /* Finally, in innerBody,
+    *   replace "break" with "_notBreakFlag = 0; break"
+    *   replace "continue" with "break"
+    */
+   replace_break_and_cont(A, innerBody);
+
+   /*slang_print_tree(top, 0);*/
+
+   return _slang_gen_operation(A, top);
+}
+
+
+/**
+ * Generate IR tree for a do-while loop using high-level LOOP, IF instructions.
+ */
+static slang_ir_node *
+_slang_gen_do(slang_assemble_ctx * A, slang_operation *oper)
+{
+   /*
+    * LOOP:
+    *    body code (child[0])
+    *    tail code:
+    *       BREAK if !expr (child[1])
+    */
+   slang_ir_node *loop;
+   GLboolean isConst, constTrue;
+
+   if (!A->EmitContReturn) {
+      /* We don't want to emit CONT instructions.  If this do-loop has
+       * a continue, translate it away.
+       */
+      if (_slang_loop_contains_continue(slang_oper_child(oper, 0))) {
+         return _slang_gen_do_without_continue(A, oper);
+      }
+   }
+
+   /* type-check expression */
+   if (!_slang_is_boolean(A, &oper->children[1])) {
+      slang_info_log_error(A->log, "scalar/boolean expression expected for 'do/while'");
+      return NULL;
+   }
+
+   loop = new_loop(NULL);
+
+   /* save loop state */
+   push_loop(A, oper, loop);
+
+   /* loop body: */
+   loop->Children[0] = _slang_gen_operation(A, &oper->children[0]);
+
+   /* Check if loop condition is a constant */
+   isConst = _slang_is_constant_cond(&oper->children[1], &constTrue);
+   if (isConst && constTrue) {
+      /* do { } while(1)   ==> no conditional break */
+      loop->Children[1] = NULL; /* no tail code */
+   }
+   else {
+      slang_ir_node *cond
+         = new_cond(new_not(_slang_gen_operation(A, &oper->children[1])));
+      loop->Children[1] = new_break_if_true(A, cond);
+   }
+
+   /* XXX we should do infinite loop detection, as above */
+
+   /* restore loop state */
+   pop_loop(A);
+
+   return loop;
+}
+
+
+/**
+ * Recursively count the number of operations rooted at 'oper'.
+ * This gives some kind of indication of the size/complexity of an operation.
+ */
+static GLuint
+sizeof_operation(const slang_operation *oper)
+{
+   if (oper) {
+      GLuint count = 1; /* me */
+      GLuint i;
+      for (i = 0; i < oper->num_children; i++) {
+         count += sizeof_operation(&oper->children[i]);
+      }
+      return count;
+   }
+   else {
+      return 0;
+   }
+}
+
+
+/**
+ * Determine if a for-loop can be unrolled.
+ * At this time, only a rather narrow class of for loops can be unrolled.
+ * See code for details.
+ * When a loop can't be unrolled because it's too large we'll emit a
+ * message to the log.
+ */
+static GLboolean
+_slang_can_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper)
+{
+   GLuint bodySize;
+   GLint start, end;
+   const char *varName;
+   slang_atom varId;
+
+   if (oper->type != SLANG_OPER_FOR)
+      return GL_FALSE;
+
+   assert(oper->num_children == 4);
+
+   if (_slang_loop_contains_continue_or_break(slang_oper_child_const(oper, 3)))
+      return GL_FALSE;
+
+   /* children[0] must be either "int i=constant" or "i=constant" */
+   if (oper->children[0].type == SLANG_OPER_BLOCK_NO_NEW_SCOPE) {
+      slang_variable *var;
+
+      if (oper->children[0].children[0].type != SLANG_OPER_VARIABLE_DECL)
+         return GL_FALSE;
+
+      varId = oper->children[0].children[0].a_id;
+
+      var = _slang_variable_locate(oper->children[0].children[0].locals,
+                                   varId, GL_TRUE);
+      if (!var)
+         return GL_FALSE;
+      if (!var->initializer)
+         return GL_FALSE;
+      if (var->initializer->type != SLANG_OPER_LITERAL_INT)
+         return GL_FALSE;
+      start = (GLint) var->initializer->literal[0];
+   }
+   else if (oper->children[0].type == SLANG_OPER_EXPRESSION) {
+      if (oper->children[0].children[0].type != SLANG_OPER_ASSIGN)
+         return GL_FALSE;
+      if (oper->children[0].children[0].children[0].type != SLANG_OPER_IDENTIFIER)
+         return GL_FALSE;
+      if (oper->children[0].children[0].children[1].type != SLANG_OPER_LITERAL_INT)
+         return GL_FALSE;
+
+      varId = oper->children[0].children[0].children[0].a_id;
+
+      start = (GLint) oper->children[0].children[0].children[1].literal[0];
+   }
+   else {
+      return GL_FALSE;
+   }
+
+   /* children[1] must be "i<constant" */
+   if (oper->children[1].type != SLANG_OPER_EXPRESSION)
+      return GL_FALSE;
+   if (oper->children[1].children[0].type != SLANG_OPER_LESS)
+      return GL_FALSE;
+   if (oper->children[1].children[0].children[0].type != SLANG_OPER_IDENTIFIER)
+      return GL_FALSE;
+   if (oper->children[1].children[0].children[1].type != SLANG_OPER_LITERAL_INT)
+      return GL_FALSE;
+
+   end = (GLint) oper->children[1].children[0].children[1].literal[0];
+
+   /* children[2] must be "i++" or "++i" */
+   if (oper->children[2].type != SLANG_OPER_POSTINCREMENT &&
+       oper->children[2].type != SLANG_OPER_PREINCREMENT)
+      return GL_FALSE;
+   if (oper->children[2].children[0].type != SLANG_OPER_IDENTIFIER)
+      return GL_FALSE;
+
+   /* make sure the same variable name is used in all places */
+   if ((oper->children[1].children[0].children[0].a_id != varId) ||
+       (oper->children[2].children[0].a_id != varId))
+      return GL_FALSE;
+
+   varName = (const char *) varId;
+
+   /* children[3], the loop body, can't be too large */
+   bodySize = sizeof_operation(&oper->children[3]);
+   if (bodySize > MAX_FOR_LOOP_UNROLL_BODY_SIZE) {
+      slang_info_log_print(A->log,
+                           "Note: 'for (%s ... )' body is too large/complex"
+                           " to unroll",
+                           varName);
+      return GL_FALSE;
+   }
+
+   if (start >= end)
+      return GL_FALSE; /* degenerate case */
+
+   if (end - start > MAX_FOR_LOOP_UNROLL_ITERATIONS) {
+      slang_info_log_print(A->log,
+                           "Note: 'for (%s=%d; %s<%d; ++%s)' is too"
+                           " many iterations to unroll",
+                           varName, start, varName, end, varName);
+      return GL_FALSE;
+   }
+
+   if ((end - start) * bodySize > MAX_FOR_LOOP_UNROLL_COMPLEXITY) {
+      slang_info_log_print(A->log,
+                           "Note: 'for (%s=%d; %s<%d; ++%s)' will generate"
+                           " too much code to unroll",
+                           varName, start, varName, end, varName);
+      return GL_FALSE;
+   }
+
+   return GL_TRUE; /* we can unroll the loop */
+}
+
+
+/**
+ * Unroll a for-loop.
+ * First we determine the number of iterations to unroll.
+ * Then for each iteration:
+ *   make a copy of the loop body
+ *   replace instances of the loop variable with the current iteration value
+ *   generate IR code for the body
+ * \return pointer to generated IR code or NULL if error, out of memory, etc.
+ */
+static slang_ir_node *
+_slang_unroll_for_loop(slang_assemble_ctx * A, const slang_operation *oper)
+{
+   GLint start, end, iter;
+   slang_ir_node *n, *root = NULL;
+   slang_atom varId;
+
+   if (oper->children[0].type == SLANG_OPER_BLOCK_NO_NEW_SCOPE) {
+      /* for (int i=0; ... */
+      slang_variable *var;
+
+      varId = oper->children[0].children[0].a_id;
+      var = _slang_variable_locate(oper->children[0].children[0].locals,
+                                   varId, GL_TRUE);
+      start = (GLint) var->initializer->literal[0];
+   }
+   else {
+      /* for (i=0; ... */
+      varId = oper->children[0].children[0].children[0].a_id;
+      start = (GLint) oper->children[0].children[0].children[1].literal[0];
+   }
+
+   end = (GLint) oper->children[1].children[0].children[1].literal[0];
+
+   for (iter = start; iter < end; iter++) {
+      slang_operation *body;
+
+      /* make a copy of the loop body */
+      body = slang_operation_new(1);
+      if (!body)
+         return NULL;
+
+      if (!slang_operation_copy(body, &oper->children[3]))
+         return NULL;
+
+      /* in body, replace instances of 'varId' with literal 'iter' */
+      {
+         slang_variable *oldVar;
+         slang_operation *newOper;
+
+         oldVar = _slang_variable_locate(oper->locals, varId, GL_TRUE);
+         if (!oldVar) {
+            /* undeclared loop variable */
+            slang_operation_delete(body);
+            return NULL;
+         }
+
+         newOper = slang_operation_new(1);
+         newOper->type = SLANG_OPER_LITERAL_INT;
+         newOper->literal_size = 1;
+         newOper->literal[0] = iter;
+
+         /* replace instances of the loop variable with newOper */
+         slang_substitute(A, body, 1, &oldVar, &newOper, GL_FALSE);
+      }
+
+      /* do IR codegen for body */
+      n = _slang_gen_operation(A, body);
+      if (!n)
+         return NULL;
+
+      root = new_seq(root, n);
+
+      slang_operation_delete(body);
+   }
+
+   return root;
+}
+
+
+/**
+ * Replace 'continue' statement with 'break' inside a for-loop.
+ * This is a recursive helper function used by _slang_gen_for_without_continue().
+ */
+static void
+replace_continue_with_break(slang_assemble_ctx *A, slang_operation *oper)
+{
+   switch (oper->type) {
+   case SLANG_OPER_CONTINUE:
+      oper->type = SLANG_OPER_BREAK;
+      break;
+   case SLANG_OPER_FOR:
+   case SLANG_OPER_DO:
+   case SLANG_OPER_WHILE:
+      /* stop upon finding a nested loop */
+      break;
+   default:
+      /* recurse */
+      {
+         GLuint i;
+         for (i = 0; i < oper->num_children; i++) {
+            replace_continue_with_break(A, slang_oper_child(oper, i));
+         }
+      }
+   }
+}
+
+
+/**
+ * Transform a for-loop so that continue statements are converted to breaks.
+ * Then do normal IR code generation.
+ *
+ * Before:
+ * 
+ * for (INIT; LOOPCOND; INCR) {
+ *    A;
+ *    if (IFCOND) {
+ *       continue;
+ *    }
+ *    B;
+ * }
+ * 
+ * After:
+ * 
+ * {
+ *    bool _condFlag = 1;
+ *    for (INIT; _condFlag; ) {
+ *       for ( ; _condFlag = LOOPCOND; INCR) {
+ *          A;
+ *          if (IFCOND) {
+ *             break;
+ *          }
+ *          B;
+ *       }
+ *       if (_condFlag)
+ *          INCR;
+ *    }
+ * }
+ */
+static slang_ir_node *
+_slang_gen_for_without_continue(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_operation *top;
+   slang_operation *outerFor, *innerFor, *init, *cond, *incr;
+   slang_operation *lhs, *rhs;
+
+   assert(oper->type == SLANG_OPER_FOR);
+
+   top = slang_operation_new(1);
+   top->type = SLANG_OPER_BLOCK_NEW_SCOPE;
+   top->locals->outer_scope = oper->locals->outer_scope;
+   slang_operation_add_children(top, 2);
+
+   /* declare: bool _condFlag = true */
+   {
+      slang_operation *condDecl = slang_oper_child(top, 0);
+      slang_generate_declaration(A, top->locals, condDecl,
+                                 SLANG_SPEC_BOOL, "_condFlag", GL_TRUE);
+   }
+
+   /* build outer loop:  for (INIT; _condFlag; ) { */
+   outerFor = slang_oper_child(top, 1);
+   outerFor->type = SLANG_OPER_FOR;
+   slang_operation_add_children(outerFor, 4);
+
+   init = slang_oper_child(outerFor, 0);
+   slang_operation_copy(init, slang_oper_child(oper, 0));
+
+   cond = slang_oper_child(outerFor, 1);
+   cond->type = SLANG_OPER_IDENTIFIER;
+   cond->a_id = slang_atom_pool_atom(A->atoms, "_condFlag");
+
+   incr = slang_oper_child(outerFor, 2);
+   incr->type = SLANG_OPER_VOID;
+
+   /* body of the outer loop */
+   {
+      slang_operation *block = slang_oper_child(outerFor, 3);
+
+      slang_operation_add_children(block, 2);
+      block->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
+
+      /* build inner loop:  for ( ; _condFlag = LOOPCOND; INCR) { */
+      {
+         innerFor = slang_oper_child(block, 0);
+
+         /* make copy of orig loop */
+         slang_operation_copy(innerFor, oper);
+         assert(innerFor->type == SLANG_OPER_FOR);
+         innerFor->locals->outer_scope = block->locals;
+
+         init = slang_oper_child(innerFor, 0);
+         init->type = SLANG_OPER_VOID; /* leak? */
+
+         cond = slang_oper_child(innerFor, 1);
+         slang_operation_destruct(cond);
+         cond->type = SLANG_OPER_ASSIGN;
+         cond->locals = _slang_variable_scope_new(innerFor->locals);
+         slang_operation_add_children(cond, 2);
+
+         lhs = slang_oper_child(cond, 0);
+         lhs->type = SLANG_OPER_IDENTIFIER;
+         lhs->a_id = slang_atom_pool_atom(A->atoms, "_condFlag");
+
+         rhs = slang_oper_child(cond, 1);
+         slang_operation_copy(rhs, slang_oper_child(oper, 1));
+      }
+
+      /* if (_condFlag) INCR; */
+      {
+         slang_operation *ifop = slang_oper_child(block, 1);
+         ifop->type = SLANG_OPER_IF;
+         slang_operation_add_children(ifop, 2);
+
+         /* re-use cond node build above */
+         slang_operation_copy(slang_oper_child(ifop, 0), cond);
+
+         /* incr node from original for-loop operation */
+         slang_operation_copy(slang_oper_child(ifop, 1),
+                              slang_oper_child(oper, 2));
+      }
+
+      /* finally, replace "continue" with "break" in the inner for-loop */
+      replace_continue_with_break(A, slang_oper_child(innerFor, 3));
+   }
+
+   return _slang_gen_operation(A, top);
+}
+
+
+
+/**
+ * Generate IR for a for-loop.  Unrolling will be done when possible.
+ */
+static slang_ir_node *
+_slang_gen_for(slang_assemble_ctx * A, slang_operation *oper)
+{
+   GLboolean unroll;
+
+   if (!A->EmitContReturn) {
+      /* We don't want to emit CONT instructions.  If this for-loop has
+       * a continue, translate it away.
+       */
+      if (_slang_loop_contains_continue(slang_oper_child(oper, 3))) {
+         return _slang_gen_for_without_continue(A, oper);
+      }
+   }
+
+   unroll = _slang_can_unroll_for_loop(A, oper);
+   if (unroll) {
+      slang_ir_node *code = _slang_unroll_for_loop(A, oper);
+      if (code)
+         return code;
+   }
+
+   assert(oper->type == SLANG_OPER_FOR);
+
+   /* conventional for-loop code generation */
+   {
+      /*
+       * init code (child[0])
+       * LOOP:
+       *    BREAK if !expr (child[1])
+       *    body code (child[3])
+       *    tail code:
+       *       incr code (child[2])   // XXX continue here
+       */
+      slang_ir_node *loop, *cond, *breakIf, *body, *init, *incr;
+      init = _slang_gen_operation(A, &oper->children[0]);
+      loop = new_loop(NULL);
+
+      /* save loop state */
+      push_loop(A, oper, loop);
+
+      cond = new_cond(new_not(_slang_gen_operation(A, &oper->children[1])));
+      breakIf = new_break_if_true(A, cond);
+      body = _slang_gen_operation(A, &oper->children[3]);
+      incr = _slang_gen_operation(A, &oper->children[2]);
+
+      loop->Children[0] = new_seq(breakIf, body);
+      loop->Children[1] = incr;  /* tail code */
+
+      /* restore loop state */
+      pop_loop(A);
+
+      return new_seq(init, loop);
+   }
+}
+
+
+static slang_ir_node *
+_slang_gen_continue(slang_assemble_ctx * A, const slang_operation *oper)
+{
+   slang_ir_node *n, *cont, *incr = NULL, *loopNode;
+
+   assert(oper->type == SLANG_OPER_CONTINUE);
+   loopNode = current_loop_ir(A);
+   assert(loopNode);
+   assert(loopNode->Opcode == IR_LOOP);
+
+   cont = new_node0(IR_CONT);
+   if (cont) {
+      cont->Parent = loopNode;
+      /* insert this node at head of linked list of cont/break instructions */
+      cont->List = loopNode->List;
+      loopNode->List = cont;
+   }
+
+   n = new_seq(incr, cont);
+   return n;
+}
+
+
+/**
+ * Determine if the given operation is of a specific type.
+ */
+static GLboolean
+is_operation_type(const slang_operation *oper, slang_operation_type type)
+{
+   if (oper->type == type)
+      return GL_TRUE;
+   else if ((oper->type == SLANG_OPER_BLOCK_NEW_SCOPE ||
+             oper->type == SLANG_OPER_BLOCK_NO_NEW_SCOPE) &&
+            oper->num_children == 1)
+      return is_operation_type(&oper->children[0], type);
+   else
+      return GL_FALSE;
+}
+
+
+/**
+ * Generate IR tree for an if/then/else conditional using high-level
+ * IR_IF instruction.
+ */
+static slang_ir_node *
+_slang_gen_if(slang_assemble_ctx * A, const slang_operation *oper)
+{
+   /*
+    * eval expr (child[0])
+    * IF expr THEN
+    *    if-body code
+    * ELSE
+    *    else-body code
+    * ENDIF
+    */
+   const GLboolean haveElseClause = !_slang_is_noop(&oper->children[2]);
+   slang_ir_node *ifNode, *cond, *ifBody, *elseBody;
+   GLboolean isConst, constTrue;
+
+   /* type-check expression */
+   if (!_slang_is_boolean(A, &oper->children[0])) {
+      slang_info_log_error(A->log, "boolean expression expected for 'if'");
+      return NULL;
+   }
+
+   if (!_slang_is_scalar_or_boolean(A, &oper->children[0])) {
+      slang_info_log_error(A->log, "scalar/boolean expression expected for 'if'");
+      return NULL;
+   }
+
+   isConst = _slang_is_constant_cond(&oper->children[0], &constTrue);
+   if (isConst) {
+      if (constTrue) {
+         /* if (true) ... */
+         return _slang_gen_operation(A, &oper->children[1]);
+      }
+      else {
+         /* if (false) ... */
+         return _slang_gen_operation(A, &oper->children[2]);
+      }
+   }
+
+   cond = _slang_gen_operation(A, &oper->children[0]);
+   cond = new_cond(cond);
+
+   if (is_operation_type(&oper->children[1], SLANG_OPER_BREAK)
+       && !haveElseClause) {
+      /* Special case: generate a conditional break */
+      ifBody = new_break_if_true(A, cond);
+      return ifBody;
+   }
+   else if (is_operation_type(&oper->children[1], SLANG_OPER_CONTINUE)
+            && !haveElseClause
+            && current_loop_oper(A)
+            && current_loop_oper(A)->type != SLANG_OPER_FOR) {
+      /* Special case: generate a conditional continue */
+      ifBody = new_cont_if_true(A, cond);
+      return ifBody;
+   }
+   else {
+      /* general case */
+      ifBody = _slang_gen_operation(A, &oper->children[1]);
+      if (haveElseClause)
+         elseBody = _slang_gen_operation(A, &oper->children[2]);
+      else
+         elseBody = NULL;
+      ifNode = new_if(cond, ifBody, elseBody);
+      return ifNode;
+   }
+}
+
+
+
+static slang_ir_node *
+_slang_gen_not(slang_assemble_ctx * A, const slang_operation *oper)
+{
+   slang_ir_node *n;
+
+   assert(oper->type == SLANG_OPER_NOT);
+
+   /* type-check expression */
+   if (!_slang_is_scalar_or_boolean(A, &oper->children[0])) {
+      slang_info_log_error(A->log,
+                           "scalar/boolean expression expected for '!'");
+      return NULL;
+   }
+
+   n = _slang_gen_operation(A, &oper->children[0]);
+   if (n)
+      return new_not(n);
+   else
+      return NULL;
+}
+
+
+static slang_ir_node *
+_slang_gen_xor(slang_assemble_ctx * A, const slang_operation *oper)
+{
+   slang_ir_node *n1, *n2;
+
+   assert(oper->type == SLANG_OPER_LOGICALXOR);
+
+   if (!_slang_is_scalar_or_boolean(A, &oper->children[0]) ||
+       !_slang_is_scalar_or_boolean(A, &oper->children[0])) {
+      slang_info_log_error(A->log,
+                           "scalar/boolean expressions expected for '^^'");
+      return NULL;
+   }
+
+   n1 = _slang_gen_operation(A, &oper->children[0]);
+   if (!n1)
+      return NULL;
+   n2 = _slang_gen_operation(A, &oper->children[1]);
+   if (!n2)
+      return NULL;
+   return new_node2(IR_NOTEQUAL, n1, n2);
+}
+
+
+/**
+ * Generate IR node for storage of a temporary of given size.
+ */
+static slang_ir_node *
+_slang_gen_temporary(GLint size)
+{
+   slang_ir_storage *store;
+   slang_ir_node *n = NULL;
+
+   store = _slang_new_ir_storage(PROGRAM_TEMPORARY, -2, size);
+   if (store) {
+      n = new_node0(IR_VAR_DECL);
+      if (n) {
+         n->Store = store;
+      }
+      else {
+         _slang_free(store);
+      }
+   }
+   return n;
+}
+
+
+/**
+ * Generate program constants for an array.
+ * Ex: const vec2[3] v = vec2[3](vec2(1,1), vec2(2,2), vec2(3,3));
+ * This will allocate and initialize three vector constants, storing
+ * the array in constant memory, not temporaries like a non-const array.
+ * This can also be used for uniform array initializers.
+ * \return GL_TRUE for success, GL_FALSE if failure (semantic error, etc).
+ */
+static GLboolean
+make_constant_array(slang_assemble_ctx *A,
+                    slang_variable *var,
+                    slang_operation *initializer)
+{
+   struct gl_program *prog = A->program;
+   const GLenum datatype = _slang_gltype_from_specifier(&var->type.specifier);
+   const char *varName = (char *) var->a_name;
+   const GLuint numElements = initializer->num_children;
+   GLint size;
+   GLuint i, j;
+   GLfloat *values;
+
+   if (!var->store) {
+      var->store = _slang_new_ir_storage(PROGRAM_UNDEFINED, -6, -6);
+   }
+   size = var->store->Size;
+
+   assert(var->type.qualifier == SLANG_QUAL_CONST ||
+          var->type.qualifier == SLANG_QUAL_UNIFORM);
+   assert(initializer->type == SLANG_OPER_CALL);
+   assert(initializer->array_constructor);
+
+   values = (GLfloat *) _mesa_malloc(numElements * 4 * sizeof(GLfloat));
+
+   /* convert constructor params into ordinary floats */
+   for (i = 0; i < numElements; i++) {
+      const slang_operation *op = &initializer->children[i];
+      if (op->type != SLANG_OPER_LITERAL_FLOAT) {
+         /* unsupported type for this optimization */
+         free(values);
+         return GL_FALSE;
+      }
+      for (j = 0; j < op->literal_size; j++) {
+         values[i * 4 + j] = op->literal[j];
+      }
+      for ( ; j < 4; j++) {
+         values[i * 4 + j] = 0.0f;
+      }
+   }
+
+   /* slightly different paths for constants vs. uniforms */
+   if (var->type.qualifier == SLANG_QUAL_UNIFORM) {
+      var->store->File = PROGRAM_UNIFORM;
+      var->store->Index = _mesa_add_uniform(prog->Parameters, varName,
+                                            size, datatype, values);
+   }
+   else {
+      var->store->File = PROGRAM_CONSTANT;
+      var->store->Index = _mesa_add_named_constant(prog->Parameters, varName,
+                                                   values, size);
+   }
+   assert(var->store->Size == size);
+
+   _mesa_free(values);
+
+   return GL_TRUE;
+}
+
+
+
+/**
+ * Generate IR node for allocating/declaring a variable (either a local or
+ * a global).
+ * Generally, this involves allocating an slang_ir_storage instance for the
+ * variable, choosing a register file (temporary, constant, etc).
+ * For ordinary variables we do not yet allocate storage though.  We do that
+ * when we find the first actual use of the variable to avoid allocating temp
+ * regs that will never get used.
+ * At this time, uniforms are always allocated space in this function.
+ *
+ * \param initializer  Optional initializer expression for the variable.
+ */
+static slang_ir_node *
+_slang_gen_var_decl(slang_assemble_ctx *A, slang_variable *var,
+                    slang_operation *initializer)
+{
+   const char *varName = (const char *) var->a_name;
+   const GLenum datatype = _slang_gltype_from_specifier(&var->type.specifier);
+   slang_ir_node *varDecl, *n;
+   slang_ir_storage *store;
+   GLint arrayLen, size, totalSize;  /* if array then totalSize > size */
+   gl_register_file file;
+
+   /*assert(!var->declared);*/
+   var->declared = GL_TRUE;
+
+   /* determine GPU register file for simple cases */
+   if (is_sampler_type(&var->type)) {
+      file = PROGRAM_SAMPLER;
+   }
+   else if (var->type.qualifier == SLANG_QUAL_UNIFORM) {
+      file = PROGRAM_UNIFORM;
+   }
+   else {
+      file = PROGRAM_TEMPORARY;
+   }
+
+   size = _slang_sizeof_type_specifier(&var->type.specifier);
+   if (size <= 0) {
+      slang_info_log_error(A->log, "invalid declaration for '%s'", varName);
+      return NULL;
+   }
+
+   arrayLen = _slang_array_length(var);
+   totalSize = _slang_array_size(size, arrayLen);
+
+   /* Allocate IR node for the declaration */
+   varDecl = new_node0(IR_VAR_DECL);
+   if (!varDecl)
+      return NULL;
+
+   /* Allocate slang_ir_storage for this variable if needed.
+    * Note that we may not actually allocate a constant or temporary register
+    * until later.
+    */
+   if (!var->store) {
+      GLint index = -7;  /* TBD / unknown */
+      var->store = _slang_new_ir_storage(file, index, totalSize);
+      if (!var->store)
+         return NULL; /* out of memory */
+   }
+
+   /* set the IR node's Var and Store pointers */
+   varDecl->Var = var;
+   varDecl->Store = var->store;
+
+
+   store = var->store;
+
+   /* if there's an initializer, generate IR for the expression */
+   if (initializer) {
+      slang_ir_node *varRef, *init;
+
+      if (var->type.qualifier == SLANG_QUAL_CONST) {
+         /* if the variable is const, the initializer must be a const
+          * expression as well.
+          */
+#if 0
+         if (!_slang_is_constant_expr(initializer)) {
+            slang_info_log_error(A->log,
+                                 "initializer for %s not constant", varName);
+            return NULL;
+         }
+#endif
+      }
+
+      /* IR for the variable we're initializing */
+      varRef = new_var(A, var);
+      if (!varRef) {
+         slang_info_log_error(A->log, "out of memory");
+         return NULL;
+      }
+
+      /* constant-folding, etc here */
+      _slang_simplify(initializer, &A->space, A->atoms); 
+
+      /* look for simple constant-valued variables and uniforms */
+      if (var->type.qualifier == SLANG_QUAL_CONST ||
+          var->type.qualifier == SLANG_QUAL_UNIFORM) {
+
+         if (initializer->type == SLANG_OPER_CALL &&
+             initializer->array_constructor) {
+            /* array initializer */
+            if (make_constant_array(A, var, initializer))
+               return varRef;
+         }
+         else if (initializer->type == SLANG_OPER_LITERAL_FLOAT ||
+                  initializer->type == SLANG_OPER_LITERAL_INT) {
+            /* simple float/vector initializer */
+            if (store->File == PROGRAM_UNIFORM) {
+               store->Index = _mesa_add_uniform(A->program->Parameters,
+                                                varName,
+                                                totalSize, datatype,
+                                                initializer->literal);
+               store->Swizzle = _slang_var_swizzle(size, 0);
+               return varRef;
+            }
+#if 0
+            else {
+               store->File = PROGRAM_CONSTANT;
+               store->Index = _mesa_add_named_constant(A->program->Parameters,
+                                                       varName,
+                                                       initializer->literal,
+                                                       totalSize);
+               store->Swizzle = _slang_var_swizzle(size, 0);
+               return varRef;
+            }
+#endif
+         }
+      }
+
+      /* IR for initializer */
+      init = _slang_gen_operation(A, initializer);
+      if (!init)
+         return NULL;
+
+      /* XXX remove this when type checking is added above */
+      if (init->Store && init->Store->Size != totalSize) {
+         slang_info_log_error(A->log, "invalid assignment (wrong types)");
+         return NULL;
+      }
+
+      /* assign RHS to LHS */
+      n = new_node2(IR_COPY, varRef, init);
+      n = new_seq(varDecl, n);
+   }
+   else {
+      /* no initializer */
+      n = varDecl;
+   }
+
+   if (store->File == PROGRAM_UNIFORM && store->Index < 0) {
+      /* always need to allocate storage for uniforms at this point */
+      store->Index = _mesa_add_uniform(A->program->Parameters, varName,
+                                       totalSize, datatype, NULL);
+      store->Swizzle = _slang_var_swizzle(size, 0);
+   }
+
+#if 0
+   printf("%s var %p %s  store=%p index=%d size=%d\n",
+          __FUNCTION__, (void *) var, (char *) varName,
+          (void *) store, store->Index, store->Size);
+#endif
+
+   return n;
+}
+
+
+/**
+ * Generate code for a selection expression:   b ? x : y
+ * XXX In some cases we could implement a selection expression
+ * with an LRP instruction (use the boolean as the interpolant).
+ * Otherwise, we use an IF/ELSE/ENDIF construct.
+ */
+static slang_ir_node *
+_slang_gen_select(slang_assemble_ctx *A, slang_operation *oper)
+{
+   slang_ir_node *cond, *ifNode, *trueExpr, *falseExpr, *trueNode, *falseNode;
+   slang_ir_node *tmpDecl, *tmpVar, *tree;
+   slang_typeinfo type0, type1, type2;
+   int size, isBool, isEqual;
+
+   assert(oper->type == SLANG_OPER_SELECT);
+   assert(oper->num_children == 3);
+
+   /* type of children[0] must be boolean */
+   slang_typeinfo_construct(&type0);
+   typeof_operation(A, &oper->children[0], &type0);
+   isBool = (type0.spec.type == SLANG_SPEC_BOOL);
+   slang_typeinfo_destruct(&type0);
+   if (!isBool) {
+      slang_info_log_error(A->log, "selector type is not boolean");
+      return NULL;
+   }
+
+   slang_typeinfo_construct(&type1);
+   slang_typeinfo_construct(&type2);
+   typeof_operation(A, &oper->children[1], &type1);
+   typeof_operation(A, &oper->children[2], &type2);
+   isEqual = slang_type_specifier_equal(&type1.spec, &type2.spec);
+   slang_typeinfo_destruct(&type1);
+   slang_typeinfo_destruct(&type2);
+   if (!isEqual) {
+      slang_info_log_error(A->log, "incompatible types for ?: operator");
+      return NULL;
+   }
+
+   /* size of x or y's type */
+   size = _slang_sizeof_type_specifier(&type1.spec);
+   assert(size > 0);
+
+   /* temporary var */
+   tmpDecl = _slang_gen_temporary(size);
+
+   /* the condition (child 0) */
+   cond = _slang_gen_operation(A, &oper->children[0]);
+   cond = new_cond(cond);
+
+   /* if-true body (child 1) */
+   tmpVar = new_node0(IR_VAR);
+   tmpVar->Store = tmpDecl->Store;
+   trueExpr = _slang_gen_operation(A, &oper->children[1]);
+   trueNode = new_node2(IR_COPY, tmpVar, trueExpr);
+
+   /* if-false body (child 2) */
+   tmpVar = new_node0(IR_VAR);
+   tmpVar->Store = tmpDecl->Store;
+   falseExpr = _slang_gen_operation(A, &oper->children[2]);
+   falseNode = new_node2(IR_COPY, tmpVar, falseExpr);
+
+   ifNode = new_if(cond, trueNode, falseNode);
+
+   /* tmp var value */
+   tmpVar = new_node0(IR_VAR);
+   tmpVar->Store = tmpDecl->Store;
+
+   tree = new_seq(ifNode, tmpVar);
+   tree = new_seq(tmpDecl, tree);
+
+   /*_slang_print_ir_tree(tree, 10);*/
+   return tree;
+}
+
+
+/**
+ * Generate code for &&.
+ */
+static slang_ir_node *
+_slang_gen_logical_and(slang_assemble_ctx *A, slang_operation *oper)
+{
+   /* rewrite "a && b" as  "a ? b : false" */
+   slang_operation *select;
+   slang_ir_node *n;
+
+   select = slang_operation_new(1);
+   select->type = SLANG_OPER_SELECT;
+   slang_operation_add_children(select, 3);
+
+   slang_operation_copy(slang_oper_child(select, 0), &oper->children[0]);
+   slang_operation_copy(slang_oper_child(select, 1), &oper->children[1]);
+   slang_operation_literal_bool(slang_oper_child(select, 2), GL_FALSE);
+
+   n = _slang_gen_select(A, select);
+   return n;
+}
+
+
+/**
+ * Generate code for ||.
+ */
+static slang_ir_node *
+_slang_gen_logical_or(slang_assemble_ctx *A, slang_operation *oper)
+{
+   /* rewrite "a || b" as  "a ? true : b" */
+   slang_operation *select;
+   slang_ir_node *n;
+
+   select = slang_operation_new(1);
+   select->type = SLANG_OPER_SELECT;
+   slang_operation_add_children(select, 3);
+
+   slang_operation_copy(slang_oper_child(select, 0), &oper->children[0]);
+   slang_operation_literal_bool(slang_oper_child(select, 1), GL_TRUE);
+   slang_operation_copy(slang_oper_child(select, 2), &oper->children[1]);
+
+   n = _slang_gen_select(A, select);
+   return n;
+}
+
+
+/**
+ * Generate IR tree for a return statement.
+ */
+static slang_ir_node *
+_slang_gen_return(slang_assemble_ctx * A, slang_operation *oper)
+{
+   assert(oper->type == SLANG_OPER_RETURN);
+   return new_return(A->curFuncEndLabel);
+}
+
+
+#if 0
+/**
+ * Determine if the given operation/expression is const-valued.
+ */
+static GLboolean
+_slang_is_constant_expr(const slang_operation *oper)
+{
+   slang_variable *var;
+   GLuint i;
+
+   switch (oper->type) {
+   case SLANG_OPER_IDENTIFIER:
+      var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE);
+      if (var && var->type.qualifier == SLANG_QUAL_CONST)
+         return GL_TRUE;
+      return GL_FALSE;
+   default:
+      for (i = 0; i < oper->num_children; i++) {
+         if (!_slang_is_constant_expr(&oper->children[i]))
+            return GL_FALSE;
+      }
+      return GL_TRUE;
+   }
+}
+#endif
+
+
+/**
+ * Check if an assignment of type t1 to t0 is legal.
+ * XXX more cases needed.
+ */
+static GLboolean
+_slang_assignment_compatible(slang_assemble_ctx *A,
+                             slang_operation *op0,
+                             slang_operation *op1)
+{
+   slang_typeinfo t0, t1;
+   GLuint sz0, sz1;
+
+   if (op0->type == SLANG_OPER_POSTINCREMENT ||
+       op0->type == SLANG_OPER_POSTDECREMENT) {
+      return GL_FALSE;
+   }
+
+   slang_typeinfo_construct(&t0);
+   typeof_operation(A, op0, &t0);
+
+   slang_typeinfo_construct(&t1);
+   typeof_operation(A, op1, &t1);
+
+   sz0 = _slang_sizeof_type_specifier(&t0.spec);
+   sz1 = _slang_sizeof_type_specifier(&t1.spec);
+
+#if 1
+   if (sz0 != sz1) {
+      /*printf("assignment size mismatch %u vs %u\n", sz0, sz1);*/
+      return GL_FALSE;
+   }
+#endif
+
+   if (t0.spec.type == SLANG_SPEC_STRUCT &&
+       t1.spec.type == SLANG_SPEC_STRUCT &&
+       t0.spec._struct->a_name != t1.spec._struct->a_name)
+      return GL_FALSE;
+
+   if (t0.spec.type == SLANG_SPEC_FLOAT &&
+       t1.spec.type == SLANG_SPEC_BOOL)
+      return GL_FALSE;
+
+#if 0 /* not used just yet - causes problems elsewhere */
+   if (t0.spec.type == SLANG_SPEC_INT &&
+       t1.spec.type == SLANG_SPEC_FLOAT)
+      return GL_FALSE;
+#endif
+
+   if (t0.spec.type == SLANG_SPEC_BOOL &&
+       t1.spec.type == SLANG_SPEC_FLOAT)
+      return GL_FALSE;
+
+   if (t0.spec.type == SLANG_SPEC_BOOL &&
+       t1.spec.type == SLANG_SPEC_INT)
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Generate IR tree for a local variable declaration.
+ * Basically do some error checking and call _slang_gen_var_decl().
+ */
+static slang_ir_node *
+_slang_gen_declaration(slang_assemble_ctx *A, slang_operation *oper)
+{
+   const char *varName = (char *) oper->a_id;
+   slang_variable *var;
+   slang_ir_node *varDecl;
+   slang_operation *initializer;
+
+   assert(oper->type == SLANG_OPER_VARIABLE_DECL);
+   assert(oper->num_children <= 1);
+
+
+   /* lookup the variable by name */
+   var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE);
+   if (!var)
+      return NULL;  /* "shouldn't happen" */
+
+   if (var->type.qualifier == SLANG_QUAL_ATTRIBUTE ||
+       var->type.qualifier == SLANG_QUAL_VARYING ||
+       var->type.qualifier == SLANG_QUAL_UNIFORM) {
+      /* can't declare attribute/uniform vars inside functions */
+      slang_info_log_error(A->log,
+                "local variable '%s' cannot be an attribute/uniform/varying",
+                varName);
+      return NULL;
+   }
+
+#if 0
+   if (v->declared) {
+      slang_info_log_error(A->log, "variable '%s' redeclared", varName);
+      return NULL;
+   }
+#endif
+
+   /* check if the var has an initializer */
+   if (oper->num_children > 0) {
+      assert(oper->num_children == 1);
+      initializer = &oper->children[0];
+   }
+   else if (var->initializer) {
+      initializer = var->initializer;
+   }
+   else {
+      initializer = NULL;
+   }
+
+   if (initializer) {
+      /* check/compare var type and initializer type */
+      if (!_slang_assignment_compatible(A, oper, initializer)) {
+         slang_info_log_error(A->log, "incompatible types in assignment");
+         return NULL;
+      }         
+   }
+   else {
+      if (var->type.qualifier == SLANG_QUAL_CONST) {
+         slang_info_log_error(A->log,
+                       "const-qualified variable '%s' requires initializer",
+                       varName);
+         return NULL;
+      }
+   }
+
+   /* Generate IR node */
+   varDecl = _slang_gen_var_decl(A, var, initializer);
+   if (!varDecl)
+      return NULL;
+
+   return varDecl;
+}
+
+
+/**
+ * Generate IR tree for a reference to a variable (such as in an expression).
+ * This is different from a variable declaration.
+ */
+static slang_ir_node *
+_slang_gen_variable(slang_assemble_ctx * A, slang_operation *oper)
+{
+   /* If there's a variable associated with this oper (from inlining)
+    * use it.  Otherwise, use the oper's var id.
+    */
+   slang_atom name = oper->var ? oper->var->a_name : oper->a_id;
+   slang_variable *var = _slang_variable_locate(oper->locals, name, GL_TRUE);
+   slang_ir_node *n;
+   if (!var) {
+      slang_info_log_error(A->log, "undefined variable '%s'", (char *) name);
+      return NULL;
+   }
+   assert(var->declared);
+   n = new_var(A, var);
+   return n;
+}
+
+
+
+/**
+ * Return the number of components actually named by the swizzle.
+ * Recall that swizzles may have undefined/don't-care values.
+ */
+static GLuint
+swizzle_size(GLuint swizzle)
+{
+   GLuint size = 0, i;
+   for (i = 0; i < 4; i++) {
+      GLuint swz = GET_SWZ(swizzle, i);
+      size += (swz >= 0 && swz <= 3);
+   }
+   return size;
+}
+
+
+static slang_ir_node *
+_slang_gen_swizzle(slang_ir_node *child, GLuint swizzle)
+{
+   slang_ir_node *n = new_node1(IR_SWIZZLE, child);
+   assert(child);
+   if (n) {
+      assert(!n->Store);
+      n->Store = _slang_new_ir_storage_relative(0,
+                                                swizzle_size(swizzle),
+                                                child->Store);
+      n->Store->Swizzle = swizzle;
+   }
+   return n;
+}
+
+
+static GLboolean
+is_store_writable(const slang_assemble_ctx *A, const slang_ir_storage *store)
+{
+   while (store->Parent)
+      store = store->Parent;
+
+   if (!(store->File == PROGRAM_OUTPUT ||
+         store->File == PROGRAM_TEMPORARY ||
+         (store->File == PROGRAM_VARYING &&
+          A->program->Target == GL_VERTEX_PROGRAM_ARB))) {
+      return GL_FALSE;
+   }
+   else {
+      return GL_TRUE;
+   }
+}
+
+
+/**
+ * Walk up an IR storage path to compute the final swizzle.
+ * This is used when we find an expression such as "foo.xz.yx".
+ */
+static GLuint
+root_swizzle(const slang_ir_storage *st)
+{
+   GLuint swizzle = st->Swizzle;
+   while (st->Parent) {
+      st = st->Parent;
+      swizzle = _slang_swizzle_swizzle(st->Swizzle, swizzle);
+   }
+   return swizzle;
+}
+
+
+/**
+ * Generate IR tree for an assignment (=).
+ */
+static slang_ir_node *
+_slang_gen_assignment(slang_assemble_ctx * A, slang_operation *oper)
+{
+   slang_operation *pred = NULL;
+   slang_ir_node *n = NULL;
+
+   if (oper->children[0].type == SLANG_OPER_IDENTIFIER) {
+      /* Check that var is writeable */
+      slang_variable *var
+         = _slang_variable_locate(oper->children[0].locals,
+                                  oper->children[0].a_id, GL_TRUE);
+      if (!var) {
+         slang_info_log_error(A->log, "undefined variable '%s'",
+                              (char *) oper->children[0].a_id);
+         return NULL;
+      }
+      if (var->type.qualifier == SLANG_QUAL_CONST ||
+          var->type.qualifier == SLANG_QUAL_ATTRIBUTE ||
+          var->type.qualifier == SLANG_QUAL_UNIFORM ||
+          (var->type.qualifier == SLANG_QUAL_VARYING &&
+           A->program->Target == GL_FRAGMENT_PROGRAM_ARB)) {
+         slang_info_log_error(A->log,
+                              "illegal assignment to read-only variable '%s'",
+                              (char *) oper->children[0].a_id);
+         return NULL;
+      }
+
+      /* check if we need to predicate this assignment based on __notRetFlag */
+      if ((var->is_global ||
+           var->type.qualifier == SLANG_QUAL_OUT ||
+           var->type.qualifier == SLANG_QUAL_INOUT) && A->UseReturnFlag) {
+         /* create predicate, used below */
+         pred = slang_operation_new(1);
+         pred->type = SLANG_OPER_IDENTIFIER;
+         pred->a_id = slang_atom_pool_atom(A->atoms, "__notRetFlag");
+         pred->locals->outer_scope = oper->locals->outer_scope;
+      }
+   }
+
+   if (oper->children[0].type == SLANG_OPER_IDENTIFIER &&
+       oper->children[1].type == SLANG_OPER_CALL) {
+      /* Special case of:  x = f(a, b)
+       * Replace with f(a, b, x)  (where x == hidden __retVal out param)
+       *
+       * XXX this could be even more effective if we could accomodate
+       * cases such as "v.x = f();"  - would help with typical vertex
+       * transformation.
+       */
+      n = _slang_gen_function_call_name(A,
+                                      (const char *) oper->children[1].a_id,
+                                      &oper->children[1], &oper->children[0]);
+   }
+   else {
+      slang_ir_node *lhs, *rhs;
+
+      /* lhs and rhs type checking */
+      if (!_slang_assignment_compatible(A,
+                                        &oper->children[0],
+                                        &oper->children[1])) {
+         slang_info_log_error(A->log, "incompatible types in assignment");
+         return NULL;
+      }
+
+      lhs = _slang_gen_operation(A, &oper->children[0]);
+      if (!lhs) {
+         return NULL;
+      }
+
+      if (!lhs->Store) {
+         slang_info_log_error(A->log,
+                              "invalid left hand side for assignment");
+         return NULL;
+      }
+
+      /* check that lhs is writable */
+      if (!is_store_writable(A, lhs->Store)) {
+         slang_info_log_error(A->log,
+                              "illegal assignment to read-only l-value");
+         return NULL;
+      }
+
+      rhs = _slang_gen_operation(A, &oper->children[1]);
+      if (lhs && rhs) {
+         /* convert lhs swizzle into writemask */
+         const GLuint swizzle = root_swizzle(lhs->Store);
+         GLuint writemask, newSwizzle = 0x0;
+         if (!swizzle_to_writemask(A, swizzle, &writemask, &newSwizzle)) {
+            /* Non-simple writemask, need to swizzle right hand side in
+             * order to put components into the right place.
+             */
+            rhs = _slang_gen_swizzle(rhs, newSwizzle);
+         }
+         n = new_node2(IR_COPY, lhs, rhs);
+      }
+      else {
+         return NULL;
+      }
+   }
+
+   if (n && pred) {
+      /* predicate the assignment code on __notRetFlag */
+      slang_ir_node *top, *cond;
+
+      cond = _slang_gen_operation(A, pred);
+      top = new_if(cond, n, NULL);
+      return top;
+   }
+   return n;
+}
+
+
+/**
+ * Generate IR tree for referencing a field in a struct (or basic vector type)
+ */
+static slang_ir_node *
+_slang_gen_struct_field(slang_assemble_ctx * A, slang_operation *oper)
+{
+   slang_typeinfo ti;
+
+   /* type of struct */
+   slang_typeinfo_construct(&ti);
+   typeof_operation(A, &oper->children[0], &ti);
+
+   if (_slang_type_is_vector(ti.spec.type)) {
+      /* the field should be a swizzle */
+      const GLuint rows = _slang_type_dim(ti.spec.type);
+      slang_swizzle swz;
+      slang_ir_node *n;
+      GLuint swizzle;
+      if (!_slang_is_swizzle((char *) oper->a_id, rows, &swz)) {
+         slang_info_log_error(A->log, "Bad swizzle");
+         return NULL;
+      }
+      swizzle = MAKE_SWIZZLE4(swz.swizzle[0],
+                              swz.swizzle[1],
+                              swz.swizzle[2],
+                              swz.swizzle[3]);
+
+      n = _slang_gen_operation(A, &oper->children[0]);
+      /* create new parent node with swizzle */
+      if (n)
+         n = _slang_gen_swizzle(n, swizzle);
+      return n;
+   }
+   else if (   ti.spec.type == SLANG_SPEC_FLOAT
+            || ti.spec.type == SLANG_SPEC_INT
+            || ti.spec.type == SLANG_SPEC_BOOL) {
+      const GLuint rows = 1;
+      slang_swizzle swz;
+      slang_ir_node *n;
+      GLuint swizzle;
+      if (!_slang_is_swizzle((char *) oper->a_id, rows, &swz)) {
+         slang_info_log_error(A->log, "Bad swizzle");
+      }
+      swizzle = MAKE_SWIZZLE4(swz.swizzle[0],
+                              swz.swizzle[1],
+                              swz.swizzle[2],
+                              swz.swizzle[3]);
+      n = _slang_gen_operation(A, &oper->children[0]);
+      /* create new parent node with swizzle */
+      n = _slang_gen_swizzle(n, swizzle);
+      return n;
+   }
+   else {
+      /* the field is a structure member (base.field) */
+      /* oper->children[0] is the base */
+      /* oper->a_id is the field name */
+      slang_ir_node *base, *n;
+      slang_typeinfo field_ti;
+      GLint fieldSize, fieldOffset = -1;
+
+      /* type of field */
+      slang_typeinfo_construct(&field_ti);
+      typeof_operation(A, oper, &field_ti);
+
+      fieldSize = _slang_sizeof_type_specifier(&field_ti.spec);
+      if (fieldSize > 0)
+         fieldOffset = _slang_field_offset(&ti.spec, oper->a_id);
+
+      if (fieldSize == 0 || fieldOffset < 0) {
+         const char *structName;
+         if (ti.spec._struct)
+            structName = (char *) ti.spec._struct->a_name;
+         else
+            structName = "unknown";
+         slang_info_log_error(A->log,
+                              "\"%s\" is not a member of struct \"%s\"",
+                              (char *) oper->a_id, structName);
+         return NULL;
+      }
+      assert(fieldSize >= 0);
+
+      base = _slang_gen_operation(A, &oper->children[0]);
+      if (!base) {
+         /* error msg should have already been logged */
+         return NULL;
+      }
+
+      n = new_node1(IR_FIELD, base);
+      if (!n)
+         return NULL;
+
+      n->Field = (char *) oper->a_id;
+
+      /* Store the field's offset in storage->Index */
+      n->Store = _slang_new_ir_storage(base->Store->File,
+                                       fieldOffset,
+                                       fieldSize);
+
+      return n;
+   }
+}
+
+
+/**
+ * Gen code for array indexing.
+ */
+static slang_ir_node *
+_slang_gen_array_element(slang_assemble_ctx * A, slang_operation *oper)
+{
+   slang_typeinfo array_ti;
+
+   /* get array's type info */
+   slang_typeinfo_construct(&array_ti);
+   typeof_operation(A, &oper->children[0], &array_ti);
+
+   if (_slang_type_is_vector(array_ti.spec.type)) {
+      /* indexing a simple vector type: "vec4 v; v[0]=p;" */
+      /* translate the index into a swizzle/writemask: "v.x=p" */
+      const GLuint max = _slang_type_dim(array_ti.spec.type);
+      GLint index;
+      slang_ir_node *n;
+
+      index = (GLint) oper->children[1].literal[0];
+      if (oper->children[1].type != SLANG_OPER_LITERAL_INT ||
+          index >= (GLint) max) {
+#if 0
+         slang_info_log_error(A->log, "Invalid array index for vector type");
+         printf("type = %d\n", oper->children[1].type);
+         printf("index = %d, max = %d\n", index, max);
+         printf("array = %s\n", (char*)oper->children[0].a_id);
+         printf("index = %s\n", (char*)oper->children[1].a_id);
+         return NULL;
+#else
+         index = 0;
+#endif
+      }
+
+      n = _slang_gen_operation(A, &oper->children[0]);
+      if (n) {
+         /* use swizzle to access the element */
+         GLuint swizzle = MAKE_SWIZZLE4(SWIZZLE_X + index,
+                                        SWIZZLE_NIL,
+                                        SWIZZLE_NIL,
+                                        SWIZZLE_NIL);
+         n = _slang_gen_swizzle(n, swizzle);
+      }
+      assert(n->Store);
+      return n;
+   }
+   else {
+      /* conventional array */
+      slang_typeinfo elem_ti;
+      slang_ir_node *elem, *array, *index;
+      GLint elemSize, arrayLen;
+
+      /* size of array element */
+      slang_typeinfo_construct(&elem_ti);
+      typeof_operation(A, oper, &elem_ti);
+      elemSize = _slang_sizeof_type_specifier(&elem_ti.spec);
+
+      if (_slang_type_is_matrix(array_ti.spec.type))
+         arrayLen = _slang_type_dim(array_ti.spec.type);
+      else
+         arrayLen = array_ti.array_len;
+
+      slang_typeinfo_destruct(&array_ti);
+      slang_typeinfo_destruct(&elem_ti);
+
+      if (elemSize <= 0) {
+         /* unknown var or type */
+         slang_info_log_error(A->log, "Undefined variable or type");
+         return NULL;
+      }
+
+      array = _slang_gen_operation(A, &oper->children[0]);
+      index = _slang_gen_operation(A, &oper->children[1]);
+      if (array && index) {
+         /* bounds check */
+         GLint constIndex = -1;
+         if (index->Opcode == IR_FLOAT) {
+            constIndex = (int) index->Value[0];
+            if (constIndex < 0 || constIndex >= arrayLen) {
+               slang_info_log_error(A->log,
+                                "Array index out of bounds (index=%d size=%d)",
+                                 constIndex, arrayLen);
+               _slang_free_ir_tree(array);
+               _slang_free_ir_tree(index);
+               return NULL;
+            }
+         }
+
+         if (!array->Store) {
+            slang_info_log_error(A->log, "Invalid array");
+            return NULL;
+         }
+
+         elem = new_node2(IR_ELEMENT, array, index);
+
+         /* The storage info here will be updated during code emit */
+         elem->Store = _slang_new_ir_storage(array->Store->File,
+                                             array->Store->Index,
+                                             elemSize);
+         elem->Store->Swizzle = _slang_var_swizzle(elemSize, 0);
+         return elem;
+      }
+      else {
+         _slang_free_ir_tree(array);
+         _slang_free_ir_tree(index);
+         return NULL;
+      }
+   }
+}
+
+
+static slang_ir_node *
+_slang_gen_compare(slang_assemble_ctx *A, slang_operation *oper,
+                   slang_ir_opcode opcode)
+{
+   slang_typeinfo t0, t1;
+   slang_ir_node *n;
+   
+   slang_typeinfo_construct(&t0);
+   typeof_operation(A, &oper->children[0], &t0);
+
+   slang_typeinfo_construct(&t1);
+   typeof_operation(A, &oper->children[0], &t1);
+
+   if (t0.spec.type == SLANG_SPEC_ARRAY ||
+       t1.spec.type == SLANG_SPEC_ARRAY) {
+      slang_info_log_error(A->log, "Illegal array comparison");
+      return NULL;
+   }
+
+   if (oper->type != SLANG_OPER_EQUAL &&
+       oper->type != SLANG_OPER_NOTEQUAL) {
+      /* <, <=, >, >= can only be used with scalars */
+      if ((t0.spec.type != SLANG_SPEC_INT &&
+           t0.spec.type != SLANG_SPEC_FLOAT) ||
+          (t1.spec.type != SLANG_SPEC_INT &&
+           t1.spec.type != SLANG_SPEC_FLOAT)) {
+         slang_info_log_error(A->log, "Incompatible type(s) for inequality operator");
+         return NULL;
+      }
+   }
+
+   n =  new_node2(opcode,
+                  _slang_gen_operation(A, &oper->children[0]),
+                  _slang_gen_operation(A, &oper->children[1]));
+
+   /* result is a bool (size 1) */
+   n->Store = _slang_new_ir_storage(PROGRAM_TEMPORARY, -1, 1);
+
+   return n;
+}
+
+
+#if 0
+static void
+print_vars(slang_variable_scope *s)
+{
+   int i;
+   printf("vars: ");
+   for (i = 0; i < s->num_variables; i++) {
+      printf("%s %d, \n",
+             (char*) s->variables[i]->a_name,
+             s->variables[i]->declared);
+   }
+
+   printf("\n");
+}
+#endif
+
+
+#if 0
+static void
+_slang_undeclare_vars(slang_variable_scope *locals)
+{
+   if (locals->num_variables > 0) {
+      int i;
+      for (i = 0; i < locals->num_variables; i++) {
+         slang_variable *v = locals->variables[i];
+         printf("undeclare %s at %p\n", (char*) v->a_name, v);
+         v->declared = GL_FALSE;
+      }
+   }
+}
+#endif
+
+
+/**
+ * Generate IR tree for a slang_operation (AST node)
+ */
+static slang_ir_node *
+_slang_gen_operation(slang_assemble_ctx * A, slang_operation *oper)
+{
+   switch (oper->type) {
+   case SLANG_OPER_BLOCK_NEW_SCOPE:
+      {
+         slang_ir_node *n;
+
+         _slang_push_var_table(A->vartable);
+
+         oper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE; /* temp change */
+         n = _slang_gen_operation(A, oper);
+         oper->type = SLANG_OPER_BLOCK_NEW_SCOPE; /* restore */
+
+         _slang_pop_var_table(A->vartable);
+
+         /*_slang_undeclare_vars(oper->locals);*/
+         /*print_vars(oper->locals);*/
+
+         if (n)
+            n = new_node1(IR_SCOPE, n);
+         return n;
+      }
+      break;
+
+   case SLANG_OPER_BLOCK_NO_NEW_SCOPE:
+      /* list of operations */
+      if (oper->num_children > 0)
+      {
+         slang_ir_node *n, *tree = NULL;
+         GLuint i;
+
+         for (i = 0; i < oper->num_children; i++) {
+            n = _slang_gen_operation(A, &oper->children[i]);
+            if (!n) {
+               _slang_free_ir_tree(tree);
+               return NULL; /* error must have occured */
+            }
+            tree = new_seq(tree, n);
+         }
+
+         return tree;
+      }
+      else {
+         return new_node0(IR_NOP);
+      }
+
+   case SLANG_OPER_EXPRESSION:
+      return _slang_gen_operation(A, &oper->children[0]);
+
+   case SLANG_OPER_FOR:
+      return _slang_gen_for(A, oper);
+   case SLANG_OPER_DO:
+      return _slang_gen_do(A, oper);
+   case SLANG_OPER_WHILE:
+      return _slang_gen_while(A, oper);
+   case SLANG_OPER_BREAK:
+      if (!current_loop_oper(A)) {
+         slang_info_log_error(A->log, "'break' not in loop");
+         return NULL;
+      }
+      return new_break(current_loop_ir(A));
+   case SLANG_OPER_CONTINUE:
+      if (!current_loop_oper(A)) {
+         slang_info_log_error(A->log, "'continue' not in loop");
+         return NULL;
+      }
+      return _slang_gen_continue(A, oper);
+   case SLANG_OPER_DISCARD:
+      return new_node0(IR_KILL);
+
+   case SLANG_OPER_EQUAL:
+      return _slang_gen_compare(A, oper, IR_EQUAL);
+   case SLANG_OPER_NOTEQUAL:
+      return _slang_gen_compare(A, oper, IR_NOTEQUAL);
+   case SLANG_OPER_GREATER:
+      return _slang_gen_compare(A, oper, IR_SGT);
+   case SLANG_OPER_LESS:
+      return _slang_gen_compare(A, oper, IR_SLT);
+   case SLANG_OPER_GREATEREQUAL:
+      return _slang_gen_compare(A, oper, IR_SGE);
+   case SLANG_OPER_LESSEQUAL:
+      return _slang_gen_compare(A, oper, IR_SLE);
+   case SLANG_OPER_ADD:
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 2);
+	 n = _slang_gen_function_call_name(A, "+", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_SUBTRACT:
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 2);
+	 n = _slang_gen_function_call_name(A, "-", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_MULTIPLY:
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 2);
+         n = _slang_gen_function_call_name(A, "*", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_DIVIDE:
+      {
+         slang_ir_node *n;
+         assert(oper->num_children == 2);
+	 n = _slang_gen_function_call_name(A, "/", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_MINUS:
+      {
+         slang_ir_node *n;
+         assert(oper->num_children == 1);
+	 n = _slang_gen_function_call_name(A, "-", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_PLUS:
+      /* +expr   --> do nothing */
+      return _slang_gen_operation(A, &oper->children[0]);
+   case SLANG_OPER_VARIABLE_DECL:
+      return _slang_gen_declaration(A, oper);
+   case SLANG_OPER_ASSIGN:
+      return _slang_gen_assignment(A, oper);
+   case SLANG_OPER_ADDASSIGN:
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 2);
+	 n = _slang_gen_function_call_name(A, "+=", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_SUBASSIGN:
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 2);
+	 n = _slang_gen_function_call_name(A, "-=", oper, NULL);
+	 return n;
+      }
+      break;
+   case SLANG_OPER_MULASSIGN:
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 2);
+	 n = _slang_gen_function_call_name(A, "*=", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_DIVASSIGN:
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 2);
+	 n = _slang_gen_function_call_name(A, "/=", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_LOGICALAND:
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 2);
+	 n = _slang_gen_logical_and(A, oper);
+	 return n;
+      }
+   case SLANG_OPER_LOGICALOR:
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 2);
+	 n = _slang_gen_logical_or(A, oper);
+	 return n;
+      }
+   case SLANG_OPER_LOGICALXOR:
+      return _slang_gen_xor(A, oper);
+   case SLANG_OPER_NOT:
+      return _slang_gen_not(A, oper);
+   case SLANG_OPER_SELECT:  /* b ? x : y */
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 3);
+	 n = _slang_gen_select(A, oper);
+	 return n;
+      }
+
+   case SLANG_OPER_ASM:
+      return _slang_gen_asm(A, oper, NULL);
+   case SLANG_OPER_CALL:
+      return _slang_gen_function_call_name(A, (const char *) oper->a_id,
+                                           oper, NULL);
+   case SLANG_OPER_METHOD:
+      return _slang_gen_method_call(A, oper);
+   case SLANG_OPER_RETURN:
+      return _slang_gen_return(A, oper);
+   case SLANG_OPER_RETURN_INLINED:
+      return _slang_gen_return(A, oper);
+   case SLANG_OPER_LABEL:
+      return new_label(oper->label);
+   case SLANG_OPER_IDENTIFIER:
+      return _slang_gen_variable(A, oper);
+   case SLANG_OPER_IF:
+      return _slang_gen_if(A, oper);
+   case SLANG_OPER_FIELD:
+      return _slang_gen_struct_field(A, oper);
+   case SLANG_OPER_SUBSCRIPT:
+      return _slang_gen_array_element(A, oper);
+   case SLANG_OPER_LITERAL_FLOAT:
+      /* fall-through */
+   case SLANG_OPER_LITERAL_INT:
+      /* fall-through */
+   case SLANG_OPER_LITERAL_BOOL:
+      return new_float_literal(oper->literal, oper->literal_size);
+
+   case SLANG_OPER_POSTINCREMENT:   /* var++ */
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 1);
+	 n = _slang_gen_function_call_name(A, "__postIncr", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_POSTDECREMENT:   /* var-- */
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 1);
+	 n = _slang_gen_function_call_name(A, "__postDecr", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_PREINCREMENT:   /* ++var */
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 1);
+	 n = _slang_gen_function_call_name(A, "++", oper, NULL);
+	 return n;
+      }
+   case SLANG_OPER_PREDECREMENT:   /* --var */
+      {
+	 slang_ir_node *n;
+         assert(oper->num_children == 1);
+	 n = _slang_gen_function_call_name(A, "--", oper, NULL);
+	 return n;
+      }
+
+   case SLANG_OPER_NON_INLINED_CALL:
+   case SLANG_OPER_SEQUENCE:
+      {
+         slang_ir_node *tree = NULL;
+         GLuint i;
+         for (i = 0; i < oper->num_children; i++) {
+            slang_ir_node *n = _slang_gen_operation(A, &oper->children[i]);
+            tree = new_seq(tree, n);
+            if (n)
+               tree->Store = n->Store;
+         }
+         if (oper->type == SLANG_OPER_NON_INLINED_CALL) {
+            tree = new_function_call(tree, oper->label);
+         }
+         return tree;
+      }
+
+   case SLANG_OPER_NONE:
+   case SLANG_OPER_VOID:
+      /* returning NULL here would generate an error */
+      return new_node0(IR_NOP);
+
+   default:
+      _mesa_problem(NULL, "bad node type %d in _slang_gen_operation",
+                    oper->type);
+      return new_node0(IR_NOP);
+   }
+
+   return NULL;
+}
+
+
+/**
+ * Check if the given type specifier is a rectangular texture sampler.
+ */
+static GLboolean
+is_rect_sampler_spec(const slang_type_specifier *spec)
+{
+   while (spec->_array) {
+      spec = spec->_array;
+   }
+   return spec->type == SLANG_SPEC_SAMPLER2DRECT ||
+          spec->type == SLANG_SPEC_SAMPLER2DRECTSHADOW;
+}
+
+
+
+/**
+ * Called by compiler when a global variable has been parsed/compiled.
+ * Here we examine the variable's type to determine what kind of register
+ * storage will be used.
+ *
+ * A uniform such as "gl_Position" will become the register specification
+ * (PROGRAM_OUTPUT, VERT_RESULT_HPOS).  Or, uniform "gl_FogFragCoord"
+ * will be (PROGRAM_INPUT, FRAG_ATTRIB_FOGC).
+ *
+ * Samplers are interesting.  For "uniform sampler2D tex;" we'll specify
+ * (PROGRAM_SAMPLER, index) where index is resolved at link-time to an
+ * actual texture unit (as specified by the user calling glUniform1i()).
+ */
+GLboolean
+_slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
+                               slang_unit_type type)
+{
+   struct gl_program *prog = A->program;
+   const char *varName = (char *) var->a_name;
+   GLboolean success = GL_TRUE;
+   slang_ir_storage *store = NULL;
+   int dbg = 0;
+   const GLenum datatype = _slang_gltype_from_specifier(&var->type.specifier);
+   const GLint size = _slang_sizeof_type_specifier(&var->type.specifier);
+   const GLint arrayLen = _slang_array_length(var);
+   const GLint totalSize = _slang_array_size(size, arrayLen);
+   GLint texIndex = sampler_to_texture_index(var->type.specifier.type);
+
+   var->is_global = GL_TRUE;
+
+   /* check for sampler2D arrays */
+   if (texIndex == -1 && var->type.specifier._array)
+      texIndex = sampler_to_texture_index(var->type.specifier._array->type);
+
+   if (texIndex != -1) {
+      /* This is a texture sampler variable...
+       * store->File = PROGRAM_SAMPLER
+       * store->Index = sampler number (0..7, typically)
+       * store->Size = texture type index (1D, 2D, 3D, cube, etc)
+       */
+      if (var->initializer) {
+         slang_info_log_error(A->log, "illegal assignment to '%s'", varName);
+         return GL_FALSE;
+      }
+#if FEATURE_es2_glsl /* XXX should use FEATURE_texture_rect */
+      /* disallow rect samplers */
+      if (is_rect_sampler_spec(&var->type.specifier)) {
+         slang_info_log_error(A->log, "invalid sampler type for '%s'", varName);
+         return GL_FALSE;
+      }
+#else
+      (void) is_rect_sampler_spec; /* silence warning */
+#endif
+      {
+         GLint sampNum = _mesa_add_sampler(prog->Parameters, varName, datatype);
+         store = _slang_new_ir_storage_sampler(sampNum, texIndex, totalSize);
+
+         /* If we have a sampler array, then we need to allocate the 
+	  * additional samplers to ensure we don't allocate them elsewhere.
+	  * We can't directly use _mesa_add_sampler() as that checks the
+	  * varName and gets a match, so we call _mesa_add_parameter()
+	  * directly and use the last sampler number from the call above.
+	  */
+	 if (arrayLen > 0) {
+	    GLint a = arrayLen - 1;
+	    GLint i;
+	    for (i = 0; i < a; i++) {
+               GLfloat value = (GLfloat)(i + sampNum + 1);
+               (void) _mesa_add_parameter(prog->Parameters, PROGRAM_SAMPLER,
+                                 varName, 1, datatype, &value, NULL, 0x0);
+	    }
+	 }
+      }
+      if (dbg) printf("SAMPLER ");
+   }
+   else if (var->type.qualifier == SLANG_QUAL_UNIFORM) {
+      /* Uniform variable */
+      const GLuint swizzle = _slang_var_swizzle(totalSize, 0);
+
+      if (prog) {
+         /* user-defined uniform */
+         if (datatype == GL_NONE) {
+	    if ((var->type.specifier.type == SLANG_SPEC_ARRAY &&
+	         var->type.specifier._array->type == SLANG_SPEC_STRUCT) ||
+                (var->type.specifier.type == SLANG_SPEC_STRUCT)) {
+               /* temporary work-around */
+               GLenum datatype = GL_FLOAT;
+               GLint uniformLoc = _mesa_add_uniform(prog->Parameters, varName,
+                                                    totalSize, datatype, NULL);
+               store = _slang_new_ir_storage_swz(PROGRAM_UNIFORM, uniformLoc,
+                                                 totalSize, swizzle);
+	 
+	       if (arrayLen > 0) {
+	          GLint a = arrayLen - 1;
+	          GLint i;
+	          for (i = 0; i < a; i++) {
+                     GLfloat value = (GLfloat)(i + uniformLoc + 1);
+                     (void) _mesa_add_parameter(prog->Parameters, PROGRAM_UNIFORM,
+                                 varName, 1, datatype, &value, NULL, 0x0);
+                  }
+	       }
+
+               /* XXX what we need to do is unroll the struct into its
+                * basic types, creating a uniform variable for each.
+                * For example:
+                * struct foo {
+                *   vec3 a;
+                *   vec4 b;
+                * };
+                * uniform foo f;
+                *
+                * Should produce uniforms:
+                * "f.a"  (GL_FLOAT_VEC3)
+                * "f.b"  (GL_FLOAT_VEC4)
+                */
+
+               if (var->initializer) {
+                  slang_info_log_error(A->log,
+                     "unsupported initializer for uniform '%s'", varName);
+                  return GL_FALSE;
+               }
+            }
+            else {
+               slang_info_log_error(A->log,
+                                    "invalid datatype for uniform variable %s",
+                                    varName);
+               return GL_FALSE;
+            }
+         }
+         else {
+            /* non-struct uniform */
+            if (!_slang_gen_var_decl(A, var, var->initializer))
+               return GL_FALSE;
+            store = var->store;
+         }
+      }
+      else {
+         /* pre-defined uniform, like gl_ModelviewMatrix */
+         /* We know it's a uniform, but don't allocate storage unless
+          * it's really used.
+          */
+         store = _slang_new_ir_storage_swz(PROGRAM_STATE_VAR, -1,
+                                           totalSize, swizzle);
+      }
+      if (dbg) printf("UNIFORM (sz %d) ", totalSize);
+   }
+   else if (var->type.qualifier == SLANG_QUAL_VARYING) {
+      /* varyings must be float, vec or mat */
+      if (!_slang_type_is_float_vec_mat(var->type.specifier.type) &&
+          var->type.specifier.type != SLANG_SPEC_ARRAY) {
+         slang_info_log_error(A->log,
+                              "varying '%s' must be float/vector/matrix",
+                              varName);
+         return GL_FALSE;
+      }
+
+      if (var->initializer) {
+         slang_info_log_error(A->log, "illegal initializer for varying '%s'",
+                              varName);
+         return GL_FALSE;
+      }
+
+      if (prog) {
+         /* user-defined varying */
+         GLbitfield flags;
+         GLint varyingLoc;
+         GLuint swizzle;
+
+         flags = 0x0;
+         if (var->type.centroid == SLANG_CENTROID)
+            flags |= PROG_PARAM_BIT_CENTROID;
+         if (var->type.variant == SLANG_INVARIANT)
+            flags |= PROG_PARAM_BIT_INVARIANT;
+
+         varyingLoc = _mesa_add_varying(prog->Varying, varName,
+                                        totalSize, flags);
+         swizzle = _slang_var_swizzle(size, 0);
+         store = _slang_new_ir_storage_swz(PROGRAM_VARYING, varyingLoc,
+                                           totalSize, swizzle);
+      }
+      else {
+         /* pre-defined varying, like gl_Color or gl_TexCoord */
+         if (type == SLANG_UNIT_FRAGMENT_BUILTIN) {
+            /* fragment program input */
+            GLuint swizzle;
+            GLint index = _slang_input_index(varName, GL_FRAGMENT_PROGRAM_ARB,
+                                             &swizzle);
+            assert(index >= 0);
+            assert(index < FRAG_ATTRIB_MAX);
+            store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index,
+                                              size, swizzle);
+         }
+         else {
+            /* vertex program output */
+            GLint index = _slang_output_index(varName, GL_VERTEX_PROGRAM_ARB);
+            GLuint swizzle = _slang_var_swizzle(size, 0);
+            assert(index >= 0);
+            assert(index < VERT_RESULT_MAX);
+            assert(type == SLANG_UNIT_VERTEX_BUILTIN);
+            store = _slang_new_ir_storage_swz(PROGRAM_OUTPUT, index,
+                                              size, swizzle);
+         }
+         if (dbg) printf("V/F ");
+      }
+      if (dbg) printf("VARYING ");
+   }
+   else if (var->type.qualifier == SLANG_QUAL_ATTRIBUTE) {
+      GLuint swizzle;
+      GLint index;
+      /* attributes must be float, vec or mat */
+      if (!_slang_type_is_float_vec_mat(var->type.specifier.type)) {
+         slang_info_log_error(A->log,
+                              "attribute '%s' must be float/vector/matrix",
+                              varName);
+         return GL_FALSE;
+      }
+
+      if (prog) {
+         /* user-defined vertex attribute */
+         const GLint attr = -1; /* unknown */
+         swizzle = _slang_var_swizzle(size, 0);
+         index = _mesa_add_attribute(prog->Attributes, varName,
+                                     size, datatype, attr);
+         assert(index >= 0);
+         index = VERT_ATTRIB_GENERIC0 + index;
+      }
+      else {
+         /* pre-defined vertex attrib */
+         index = _slang_input_index(varName, GL_VERTEX_PROGRAM_ARB, &swizzle);
+         assert(index >= 0);
+      }
+      store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle);
+      if (dbg) printf("ATTRIB ");
+   }
+   else if (var->type.qualifier == SLANG_QUAL_FIXEDINPUT) {
+      GLuint swizzle = SWIZZLE_XYZW; /* silence compiler warning */
+      GLint index = _slang_input_index(varName, GL_FRAGMENT_PROGRAM_ARB,
+                                       &swizzle);
+      store = _slang_new_ir_storage_swz(PROGRAM_INPUT, index, size, swizzle);
+      if (dbg) printf("INPUT ");
+   }
+   else if (var->type.qualifier == SLANG_QUAL_FIXEDOUTPUT) {
+      if (type == SLANG_UNIT_VERTEX_BUILTIN) {
+         GLint index = _slang_output_index(varName, GL_VERTEX_PROGRAM_ARB);
+         store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, size);
+      }
+      else {
+         GLint index = _slang_output_index(varName, GL_FRAGMENT_PROGRAM_ARB);
+         GLint specialSize = 4; /* treat all fragment outputs as float[4] */
+         assert(type == SLANG_UNIT_FRAGMENT_BUILTIN);
+         store = _slang_new_ir_storage(PROGRAM_OUTPUT, index, specialSize);
+      }
+      if (dbg) printf("OUTPUT ");
+   }
+   else if (var->type.qualifier == SLANG_QUAL_CONST && !prog) {
+      /* pre-defined global constant, like gl_MaxLights */
+      store = _slang_new_ir_storage(PROGRAM_CONSTANT, -1, size);
+      if (dbg) printf("CONST ");
+   }
+   else {
+      /* ordinary variable (may be const) */
+      slang_ir_node *n;
+
+      /* IR node to declare the variable */
+      n = _slang_gen_var_decl(A, var, var->initializer);
+
+      /* emit GPU instructions */
+      success = _slang_emit_code(n, A->vartable, A->program, A->pragmas, GL_FALSE, A->log);
+
+      _slang_free_ir_tree(n);
+   }
+
+   if (dbg) printf("GLOBAL VAR %s  idx %d\n", (char*) var->a_name,
+                   store ? store->Index : -2);
+
+   if (store)
+      var->store = store;  /* save var's storage info */
+
+   var->declared = GL_TRUE;
+
+   return success;
+}
+
+
+/**
+ * Produce an IR tree from a function AST (fun->body).
+ * Then call the code emitter to convert the IR tree into gl_program
+ * instructions.
+ */
+GLboolean
+_slang_codegen_function(slang_assemble_ctx * A, slang_function * fun)
+{
+   slang_ir_node *n;
+   GLboolean success = GL_TRUE;
+
+   if (_mesa_strcmp((char *) fun->header.a_name, "main") != 0) {
+      /* we only really generate code for main, all other functions get
+       * inlined or codegen'd upon an actual call.
+       */
+#if 0
+      /* do some basic error checking though */
+      if (fun->header.type.specifier.type != SLANG_SPEC_VOID) {
+         /* check that non-void functions actually return something */
+         slang_operation *op
+            = _slang_find_node_type(fun->body, SLANG_OPER_RETURN);
+         if (!op) {
+            slang_info_log_error(A->log,
+                                 "function \"%s\" has no return statement",
+                                 (char *) fun->header.a_name);
+            printf(
+                   "function \"%s\" has no return statement\n",
+                   (char *) fun->header.a_name);
+            return GL_FALSE;
+         }
+      }
+#endif
+      return GL_TRUE;  /* not an error */
+   }
+
+#if 0
+   printf("\n*********** codegen_function %s\n", (char *) fun->header.a_name);
+   slang_print_function(fun, 1);
+#endif
+
+   /* should have been allocated earlier: */
+   assert(A->program->Parameters );
+   assert(A->program->Varying);
+   assert(A->vartable);
+
+   A->LoopDepth = 0;
+   A->UseReturnFlag = GL_FALSE;
+   A->CurFunction = fun;
+
+   /* fold constant expressions, etc. */
+   _slang_simplify(fun->body, &A->space, A->atoms);
+
+#if 0
+   printf("\n*********** simplified %s\n", (char *) fun->header.a_name);
+   slang_print_function(fun, 1);
+#endif
+
+   /* Create an end-of-function label */
+   A->curFuncEndLabel = _slang_label_new("__endOfFunc__main");
+
+   /* push new vartable scope */
+   _slang_push_var_table(A->vartable);
+
+   /* Generate IR tree for the function body code */
+   n = _slang_gen_operation(A, fun->body);
+   if (n)
+      n = new_node1(IR_SCOPE, n);
+
+   /* pop vartable, restore previous */
+   _slang_pop_var_table(A->vartable);
+
+   if (!n) {
+      /* XXX record error */
+      return GL_FALSE;
+   }
+
+   /* append an end-of-function-label to IR tree */
+   n = new_seq(n, new_label(A->curFuncEndLabel));
+
+   /*_slang_label_delete(A->curFuncEndLabel);*/
+   A->curFuncEndLabel = NULL;
+
+#if 0
+   printf("************* New AST for %s *****\n", (char*)fun->header.a_name);
+   slang_print_function(fun, 1);
+#endif
+#if 0
+   printf("************* IR for %s *******\n", (char*)fun->header.a_name);
+   _slang_print_ir_tree(n, 0);
+#endif
+#if 0
+   printf("************* End codegen function ************\n\n");
+#endif
+
+   if (A->UnresolvedRefs) {
+      /* Can't codegen at this time.
+       * At link time we'll concatenate all the vertex shaders and/or all
+       * the fragment shaders and try recompiling.
+       */
+      return GL_TRUE;
+   }
+
+   /* Emit program instructions */
+   success = _slang_emit_code(n, A->vartable, A->program, A->pragmas, GL_TRUE, A->log);
+   _slang_free_ir_tree(n);
+
+   /* free codegen context */
+   /*
+   _mesa_free(A->codegen);
+   */
+
+   return success;
+}
+
diff --git a/mesalib/src/mesa/shader/slang/slang_codegen.h b/mesalib/src/mesa/shader/slang/slang_codegen.h
new file mode 100644
index 000000000..ee3be55a4
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_codegen.h
@@ -0,0 +1,72 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef SLANG_CODEGEN_H
+#define SLANG_CODEGEN_H
+
+
+#include "main/imports.h"
+#include "slang_compile.h"
+
+
+#define MAX_LOOP_DEPTH 30
+
+
+typedef struct slang_assemble_ctx_
+{
+   slang_atom_pool *atoms;
+   slang_name_space space;
+   struct gl_program *program;
+   struct gl_sl_pragmas *pragmas;
+   slang_var_table *vartable;
+   slang_info_log *log;
+
+   /* current loop stack */
+   const slang_operation *LoopOperStack[MAX_LOOP_DEPTH];
+   struct slang_ir_node_ *LoopIRStack[MAX_LOOP_DEPTH];
+   GLuint LoopDepth;
+
+   /* current function */
+   struct slang_function_ *CurFunction;
+   struct slang_label_ *curFuncEndLabel;
+   GLboolean UseReturnFlag;
+
+   GLboolean UnresolvedRefs;
+   GLboolean EmitContReturn;
+} slang_assemble_ctx;
+
+
+extern GLuint
+_slang_sizeof_type_specifier(const slang_type_specifier *spec);
+
+extern GLboolean
+_slang_codegen_function(slang_assemble_ctx *A , struct slang_function_ *fun);
+
+extern GLboolean
+_slang_codegen_global_variable(slang_assemble_ctx *A, slang_variable *var,
+                               slang_unit_type type);
+
+
+#endif /* SLANG_CODEGEN_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_compile.c b/mesalib/src/mesa/shader/slang/slang_compile.c
new file mode 100644
index 000000000..c1b97c7cb
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile.c
@@ -0,0 +1,2825 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2008 VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_compile.c
+ * slang front-end compiler
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "main/context.h"
+#include "shader/program.h"
+#include "shader/programopt.h"
+#include "shader/prog_optimize.h"
+#include "shader/prog_print.h"
+#include "shader/prog_parameter.h"
+#include "shader/grammar/grammar_mesa.h"
+#include "slang_codegen.h"
+#include "slang_compile.h"
+#include "slang_preprocess.h"
+#include "slang_storage.h"
+#include "slang_emit.h"
+#include "slang_log.h"
+#include "slang_mem.h"
+#include "slang_vartable.h"
+#include "slang_simplify.h"
+
+#include "slang_print.h"
+
+/*
+ * This is a straightforward implementation of the slang front-end
+ * compiler.  Lots of error-checking functionality is missing but
+ * every well-formed shader source should compile successfully and
+ * execute as expected. However, some semantically ill-formed shaders
+ * may be accepted resulting in undefined behaviour.
+ */
+
+
+/** re-defined below, should be the same though */
+#define TYPE_SPECIFIER_COUNT 32
+
+
+/**
+ * Check if the given identifier is legal.
+ */
+static GLboolean
+legal_identifier(slang_atom name)
+{
+   /* "gl_" is a reserved prefix */
+   if (_mesa_strncmp((char *) name, "gl_", 3) == 0) {
+      return GL_FALSE;
+   }
+   return GL_TRUE;
+}
+
+
+/*
+ * slang_code_unit
+ */
+
+GLvoid
+_slang_code_unit_ctr(slang_code_unit * self,
+                     struct slang_code_object_ * object)
+{
+   _slang_variable_scope_ctr(&self->vars);
+   _slang_function_scope_ctr(&self->funs);
+   _slang_struct_scope_ctr(&self->structs);
+   self->object = object;
+}
+
+GLvoid
+_slang_code_unit_dtr(slang_code_unit * self)
+{
+   slang_variable_scope_destruct(&self->vars);
+   slang_function_scope_destruct(&self->funs);
+   slang_struct_scope_destruct(&self->structs);
+}
+
+/*
+ * slang_code_object
+ */
+
+GLvoid
+_slang_code_object_ctr(slang_code_object * self)
+{
+   GLuint i;
+
+   for (i = 0; i < SLANG_BUILTIN_TOTAL; i++)
+      _slang_code_unit_ctr(&self->builtin[i], self);
+   _slang_code_unit_ctr(&self->unit, self);
+   slang_atom_pool_construct(&self->atompool);
+}
+
+GLvoid
+_slang_code_object_dtr(slang_code_object * self)
+{
+   GLuint i;
+
+   for (i = 0; i < SLANG_BUILTIN_TOTAL; i++)
+      _slang_code_unit_dtr(&self->builtin[i]);
+   _slang_code_unit_dtr(&self->unit);
+   slang_atom_pool_destruct(&self->atompool);
+}
+
+
+/* slang_parse_ctx */
+
+typedef struct slang_parse_ctx_
+{
+   const byte *I;
+   slang_info_log *L;
+   int parsing_builtin;
+   GLboolean global_scope;   /**< Is object being declared a global? */
+   slang_atom_pool *atoms;
+   slang_unit_type type;     /**< Vertex vs. Fragment */
+   GLuint version;           /**< user-specified (or default) #version */
+} slang_parse_ctx;
+
+/* slang_output_ctx */
+
+typedef struct slang_output_ctx_
+{
+   slang_variable_scope *vars;
+   slang_function_scope *funs;
+   slang_struct_scope *structs;
+   struct gl_program *program;
+   struct gl_sl_pragmas *pragmas;
+   slang_var_table *vartable;
+   GLuint default_precision[TYPE_SPECIFIER_COUNT];
+   GLboolean allow_precision;
+   GLboolean allow_invariant;
+   GLboolean allow_centroid;
+   GLboolean allow_array_types;  /* float[] syntax */
+} slang_output_ctx;
+
+/* _slang_compile() */
+
+
+/* Debugging aid, print file/line where parsing error is detected */
+#define RETURN0 \
+   do { \
+      if (0) \
+         printf("slang error at %s:%d\n", __FILE__, __LINE__); \
+      return 0; \
+   } while (0)
+
+
+static void
+parse_identifier_str(slang_parse_ctx * C, char **id)
+{
+   *id = (char *) C->I;
+   C->I += _mesa_strlen(*id) + 1;
+}
+
+static slang_atom
+parse_identifier(slang_parse_ctx * C)
+{
+   const char *id;
+
+   id = (const char *) C->I;
+   C->I += _mesa_strlen(id) + 1;
+   return slang_atom_pool_atom(C->atoms, id);
+}
+
+static int
+parse_number(slang_parse_ctx * C, int *number)
+{
+   const int radix = (int) (*C->I++);
+   *number = 0;
+   while (*C->I != '\0') {
+      int digit;
+      if (*C->I >= '0' && *C->I <= '9')
+         digit = (int) (*C->I - '0');
+      else if (*C->I >= 'A' && *C->I <= 'Z')
+         digit = (int) (*C->I - 'A') + 10;
+      else
+         digit = (int) (*C->I - 'a') + 10;
+      *number = *number * radix + digit;
+      C->I++;
+   }
+   C->I++;
+   if (*number > 65535)
+      slang_info_log_warning(C->L, "%d: literal integer overflow.", *number);
+   return 1;
+}
+
+static int
+parse_float(slang_parse_ctx * C, float *number)
+{
+   char *integral = NULL;
+   char *fractional = NULL;
+   char *exponent = NULL;
+   char *whole = NULL;
+
+   parse_identifier_str(C, &integral);
+   parse_identifier_str(C, &fractional);
+   parse_identifier_str(C, &exponent);
+
+   whole = (char *) _slang_alloc((_mesa_strlen(integral) +
+                                  _mesa_strlen(fractional) +
+                                  _mesa_strlen(exponent) + 3) * sizeof(char));
+   if (whole == NULL) {
+      slang_info_log_memory(C->L);
+      RETURN0;
+   }
+
+   slang_string_copy(whole, integral);
+   slang_string_concat(whole, ".");
+   slang_string_concat(whole, fractional);
+   slang_string_concat(whole, "E");
+   slang_string_concat(whole, exponent);
+
+   *number = (float) (_mesa_strtod(whole, (char **) NULL));
+
+   _slang_free(whole);
+
+   return 1;
+}
+
+/* revision number - increment after each change affecting emitted output */
+#define REVISION 5
+
+static int
+check_revision(slang_parse_ctx * C)
+{
+   if (*C->I != REVISION) {
+      slang_info_log_error(C->L, "Internal compiler error.");
+      RETURN0;
+   }
+   C->I++;
+   return 1;
+}
+
+static int parse_statement(slang_parse_ctx *, slang_output_ctx *,
+                           slang_operation *);
+static int parse_expression(slang_parse_ctx *, slang_output_ctx *,
+                            slang_operation *);
+static int parse_type_specifier(slang_parse_ctx *, slang_output_ctx *,
+                                slang_type_specifier *);
+static int
+parse_type_array_size(slang_parse_ctx *C,
+                      slang_output_ctx *O,
+                      GLint *array_len);
+
+static GLboolean
+parse_array_len(slang_parse_ctx * C, slang_output_ctx * O, GLuint * len)
+{
+   slang_operation array_size;
+   slang_name_space space;
+   GLboolean result;
+
+   if (!slang_operation_construct(&array_size))
+      return GL_FALSE;
+   if (!parse_expression(C, O, &array_size)) {
+      slang_operation_destruct(&array_size);
+      return GL_FALSE;
+   }
+
+   space.funcs = O->funs;
+   space.structs = O->structs;
+   space.vars = O->vars;
+
+   /* evaluate compile-time expression which is array size */
+   _slang_simplify(&array_size, &space, C->atoms);
+
+   if (array_size.type == SLANG_OPER_LITERAL_INT) {
+      result = GL_TRUE;
+      *len = (GLint) array_size.literal[0];
+   } else if (array_size.type == SLANG_OPER_IDENTIFIER) {
+      slang_variable *var = _slang_variable_locate(array_size.locals, array_size.a_id, GL_TRUE);
+      if (!var) {
+         slang_info_log_error(C->L, "undefined variable '%s'",
+                              (char *) array_size.a_id);
+         result = GL_FALSE;
+      } else if (var->type.qualifier == SLANG_QUAL_CONST &&
+                 var->type.specifier.type == SLANG_SPEC_INT) {
+         if (var->initializer &&
+             var->initializer->type == SLANG_OPER_LITERAL_INT) {
+            *len = (GLint) var->initializer->literal[0];
+            result = GL_TRUE;
+         } else {
+            slang_info_log_error(C->L, "unable to parse array size declaration");
+            result = GL_FALSE;
+         }
+      } else {
+         slang_info_log_error(C->L, "unable to parse array size declaration");
+         result = GL_FALSE;
+      }
+   } else {
+      result = GL_FALSE;
+   }
+
+   slang_operation_destruct(&array_size);
+   return result;
+}
+
+static GLboolean
+calculate_var_size(slang_parse_ctx * C, slang_output_ctx * O,
+                   slang_variable * var)
+{
+   slang_storage_aggregate agg;
+
+   if (!slang_storage_aggregate_construct(&agg))
+      return GL_FALSE;
+   if (!_slang_aggregate_variable(&agg, &var->type.specifier, var->array_len,
+                                  O->funs, O->structs, O->vars, C->atoms)) {
+      slang_storage_aggregate_destruct(&agg);
+      return GL_FALSE;
+   }
+   var->size = _slang_sizeof_aggregate(&agg);
+   slang_storage_aggregate_destruct(&agg);
+   return GL_TRUE;
+}
+
+static void
+promote_type_to_array(slang_parse_ctx *C,
+                      slang_fully_specified_type *type,
+                      GLint array_len)
+{
+   slang_type_specifier *baseType =
+      slang_type_specifier_new(type->specifier.type, NULL, NULL);
+
+   type->specifier.type = SLANG_SPEC_ARRAY;
+   type->specifier._array = baseType;
+   type->array_len = array_len;
+}
+
+
+static GLboolean
+convert_to_array(slang_parse_ctx * C, slang_variable * var,
+                 const slang_type_specifier * sp)
+{
+   /* sized array - mark it as array, copy the specifier to the array element
+    * and parse the expression */
+   var->type.specifier.type = SLANG_SPEC_ARRAY;
+   var->type.specifier._array = (slang_type_specifier *)
+      _slang_alloc(sizeof(slang_type_specifier));
+   if (var->type.specifier._array == NULL) {
+      slang_info_log_memory(C->L);
+      return GL_FALSE;
+   }
+   slang_type_specifier_ctr(var->type.specifier._array);
+   return slang_type_specifier_copy(var->type.specifier._array, sp);
+}
+
+/* structure field */
+#define FIELD_NONE 0
+#define FIELD_NEXT 1
+#define FIELD_ARRAY 2
+
+static GLboolean
+parse_struct_field_var(slang_parse_ctx * C, slang_output_ctx * O,
+                       slang_variable * var, slang_atom a_name,
+                       const slang_type_specifier * sp,
+                       GLuint array_len)
+{
+   var->a_name = a_name;
+   if (var->a_name == SLANG_ATOM_NULL)
+      return GL_FALSE;
+
+   switch (*C->I++) {
+   case FIELD_NONE:
+      if (array_len != -1) {
+         if (!convert_to_array(C, var, sp))
+            return GL_FALSE;
+         var->array_len = array_len;
+      }
+      else {
+         if (!slang_type_specifier_copy(&var->type.specifier, sp))
+            return GL_FALSE;
+      }
+      break;
+   case FIELD_ARRAY:
+      if (array_len != -1)
+         return GL_FALSE;
+      if (!convert_to_array(C, var, sp))
+         return GL_FALSE;
+      if (!parse_array_len(C, O, &var->array_len))
+         return GL_FALSE;
+      break;
+   default:
+      return GL_FALSE;
+   }
+
+   return calculate_var_size(C, O, var);
+}
+
+static int
+parse_struct_field(slang_parse_ctx * C, slang_output_ctx * O,
+                   slang_struct * st, slang_type_specifier * sp)
+{
+   slang_output_ctx o = *O;
+   GLint array_len;
+
+   o.structs = st->structs;
+   if (!parse_type_specifier(C, &o, sp))
+      RETURN0;
+   if (!parse_type_array_size(C, &o, &array_len))
+      RETURN0;
+
+   do {
+      slang_atom a_name;
+      slang_variable *var = slang_variable_scope_grow(st->fields);
+      if (!var) {
+         slang_info_log_memory(C->L);
+         RETURN0;
+      }
+      a_name = parse_identifier(C);
+      if (_slang_variable_locate(st->fields, a_name, GL_FALSE)) {
+         slang_info_log_error(C->L, "duplicate field '%s'", (char *) a_name);
+         RETURN0;
+      }
+
+      if (!parse_struct_field_var(C, &o, var, a_name, sp, array_len))
+         RETURN0;
+   }
+   while (*C->I++ != FIELD_NONE);
+
+   return 1;
+}
+
+static int
+parse_struct(slang_parse_ctx * C, slang_output_ctx * O, slang_struct ** st)
+{
+   slang_atom a_name;
+   const char *name;
+
+   /* parse struct name (if any) and make sure it is unique in current scope */
+   a_name = parse_identifier(C);
+   if (a_name == SLANG_ATOM_NULL)
+      RETURN0;
+
+   name = slang_atom_pool_id(C->atoms, a_name);
+   if (name[0] != '\0'
+       && slang_struct_scope_find(O->structs, a_name, 0) != NULL) {
+      slang_info_log_error(C->L, "%s: duplicate type name.", name);
+      RETURN0;
+   }
+
+   /* set-up a new struct */
+   *st = (slang_struct *) _slang_alloc(sizeof(slang_struct));
+   if (*st == NULL) {
+      slang_info_log_memory(C->L);
+      RETURN0;
+   }
+   if (!slang_struct_construct(*st)) {
+      _slang_free(*st);
+      *st = NULL;
+      slang_info_log_memory(C->L);
+      RETURN0;
+   }
+   (**st).a_name = a_name;
+   (**st).structs->outer_scope = O->structs;
+
+   /* parse individual struct fields */
+   do {
+      slang_type_specifier sp;
+
+      slang_type_specifier_ctr(&sp);
+      if (!parse_struct_field(C, O, *st, &sp)) {
+         slang_type_specifier_dtr(&sp);
+         RETURN0;
+      }
+      slang_type_specifier_dtr(&sp);
+   }
+   while (*C->I++ != FIELD_NONE);
+
+   /* if named struct, copy it to current scope */
+   if (name[0] != '\0') {
+      slang_struct *s;
+
+      O->structs->structs =
+         (slang_struct *) _slang_realloc(O->structs->structs,
+                                         O->structs->num_structs
+                                         * sizeof(slang_struct),
+                                         (O->structs->num_structs + 1)
+                                         * sizeof(slang_struct));
+      if (O->structs->structs == NULL) {
+         slang_info_log_memory(C->L);
+         RETURN0;
+      }
+      s = &O->structs->structs[O->structs->num_structs];
+      if (!slang_struct_construct(s))
+         RETURN0;
+      O->structs->num_structs++;
+      if (!slang_struct_copy(s, *st))
+         RETURN0;
+   }
+
+   return 1;
+}
+
+
+/* invariant qualifer */
+#define TYPE_VARIANT    90
+#define TYPE_INVARIANT  91
+
+static int
+parse_type_variant(slang_parse_ctx * C, slang_type_variant *variant)
+{
+   GLuint invariant = *C->I++;
+   switch (invariant) {
+   case TYPE_VARIANT:
+      *variant = SLANG_VARIANT;
+      return 1;
+   case TYPE_INVARIANT:
+      *variant = SLANG_INVARIANT;
+      return 1;
+   default:
+      RETURN0;
+   }
+}
+
+
+/* centroid qualifer */
+#define TYPE_CENTER    95
+#define TYPE_CENTROID  96
+
+static int
+parse_type_centroid(slang_parse_ctx * C, slang_type_centroid *centroid)
+{
+   GLuint c = *C->I++;
+   switch (c) {
+   case TYPE_CENTER:
+      *centroid = SLANG_CENTER;
+      return 1;
+   case TYPE_CENTROID:
+      *centroid = SLANG_CENTROID;
+      return 1;
+   default:
+      RETURN0;
+   }
+}
+
+
+/* type qualifier */
+#define TYPE_QUALIFIER_NONE 0
+#define TYPE_QUALIFIER_CONST 1
+#define TYPE_QUALIFIER_ATTRIBUTE 2
+#define TYPE_QUALIFIER_VARYING 3
+#define TYPE_QUALIFIER_UNIFORM 4
+#define TYPE_QUALIFIER_FIXEDOUTPUT 5
+#define TYPE_QUALIFIER_FIXEDINPUT 6
+
+static int
+parse_type_qualifier(slang_parse_ctx * C, slang_type_qualifier * qual)
+{
+   GLuint qualifier = *C->I++;
+   switch (qualifier) {
+   case TYPE_QUALIFIER_NONE:
+      *qual = SLANG_QUAL_NONE;
+      break;
+   case TYPE_QUALIFIER_CONST:
+      *qual = SLANG_QUAL_CONST;
+      break;
+   case TYPE_QUALIFIER_ATTRIBUTE:
+      *qual = SLANG_QUAL_ATTRIBUTE;
+      break;
+   case TYPE_QUALIFIER_VARYING:
+      *qual = SLANG_QUAL_VARYING;
+      break;
+   case TYPE_QUALIFIER_UNIFORM:
+      *qual = SLANG_QUAL_UNIFORM;
+      break;
+   case TYPE_QUALIFIER_FIXEDOUTPUT:
+      *qual = SLANG_QUAL_FIXEDOUTPUT;
+      break;
+   case TYPE_QUALIFIER_FIXEDINPUT:
+      *qual = SLANG_QUAL_FIXEDINPUT;
+      break;
+   default:
+      RETURN0;
+   }
+   return 1;
+}
+
+/* type specifier */
+#define TYPE_SPECIFIER_VOID 0
+#define TYPE_SPECIFIER_BOOL 1
+#define TYPE_SPECIFIER_BVEC2 2
+#define TYPE_SPECIFIER_BVEC3 3
+#define TYPE_SPECIFIER_BVEC4 4
+#define TYPE_SPECIFIER_INT 5
+#define TYPE_SPECIFIER_IVEC2 6
+#define TYPE_SPECIFIER_IVEC3 7
+#define TYPE_SPECIFIER_IVEC4 8
+#define TYPE_SPECIFIER_FLOAT 9
+#define TYPE_SPECIFIER_VEC2 10
+#define TYPE_SPECIFIER_VEC3 11
+#define TYPE_SPECIFIER_VEC4 12
+#define TYPE_SPECIFIER_MAT2 13
+#define TYPE_SPECIFIER_MAT3 14
+#define TYPE_SPECIFIER_MAT4 15
+#define TYPE_SPECIFIER_SAMPLER1D 16
+#define TYPE_SPECIFIER_SAMPLER2D 17
+#define TYPE_SPECIFIER_SAMPLER3D 18
+#define TYPE_SPECIFIER_SAMPLERCUBE 19
+#define TYPE_SPECIFIER_SAMPLER1DSHADOW 20
+#define TYPE_SPECIFIER_SAMPLER2DSHADOW 21
+#define TYPE_SPECIFIER_SAMPLER2DRECT 22
+#define TYPE_SPECIFIER_SAMPLER2DRECTSHADOW 23
+#define TYPE_SPECIFIER_STRUCT 24
+#define TYPE_SPECIFIER_TYPENAME 25
+#define TYPE_SPECIFIER_MAT23 26
+#define TYPE_SPECIFIER_MAT32 27
+#define TYPE_SPECIFIER_MAT24 28
+#define TYPE_SPECIFIER_MAT42 29
+#define TYPE_SPECIFIER_MAT34 30
+#define TYPE_SPECIFIER_MAT43 31
+#define TYPE_SPECIFIER_COUNT 32
+
+static int
+parse_type_specifier(slang_parse_ctx * C, slang_output_ctx * O,
+                     slang_type_specifier * spec)
+{
+   switch (*C->I++) {
+   case TYPE_SPECIFIER_VOID:
+      spec->type = SLANG_SPEC_VOID;
+      break;
+   case TYPE_SPECIFIER_BOOL:
+      spec->type = SLANG_SPEC_BOOL;
+      break;
+   case TYPE_SPECIFIER_BVEC2:
+      spec->type = SLANG_SPEC_BVEC2;
+      break;
+   case TYPE_SPECIFIER_BVEC3:
+      spec->type = SLANG_SPEC_BVEC3;
+      break;
+   case TYPE_SPECIFIER_BVEC4:
+      spec->type = SLANG_SPEC_BVEC4;
+      break;
+   case TYPE_SPECIFIER_INT:
+      spec->type = SLANG_SPEC_INT;
+      break;
+   case TYPE_SPECIFIER_IVEC2:
+      spec->type = SLANG_SPEC_IVEC2;
+      break;
+   case TYPE_SPECIFIER_IVEC3:
+      spec->type = SLANG_SPEC_IVEC3;
+      break;
+   case TYPE_SPECIFIER_IVEC4:
+      spec->type = SLANG_SPEC_IVEC4;
+      break;
+   case TYPE_SPECIFIER_FLOAT:
+      spec->type = SLANG_SPEC_FLOAT;
+      break;
+   case TYPE_SPECIFIER_VEC2:
+      spec->type = SLANG_SPEC_VEC2;
+      break;
+   case TYPE_SPECIFIER_VEC3:
+      spec->type = SLANG_SPEC_VEC3;
+      break;
+   case TYPE_SPECIFIER_VEC4:
+      spec->type = SLANG_SPEC_VEC4;
+      break;
+   case TYPE_SPECIFIER_MAT2:
+      spec->type = SLANG_SPEC_MAT2;
+      break;
+   case TYPE_SPECIFIER_MAT3:
+      spec->type = SLANG_SPEC_MAT3;
+      break;
+   case TYPE_SPECIFIER_MAT4:
+      spec->type = SLANG_SPEC_MAT4;
+      break;
+   case TYPE_SPECIFIER_MAT23:
+      spec->type = SLANG_SPEC_MAT23;
+      break;
+   case TYPE_SPECIFIER_MAT32:
+      spec->type = SLANG_SPEC_MAT32;
+      break;
+   case TYPE_SPECIFIER_MAT24:
+      spec->type = SLANG_SPEC_MAT24;
+      break;
+   case TYPE_SPECIFIER_MAT42:
+      spec->type = SLANG_SPEC_MAT42;
+      break;
+   case TYPE_SPECIFIER_MAT34:
+      spec->type = SLANG_SPEC_MAT34;
+      break;
+   case TYPE_SPECIFIER_MAT43:
+      spec->type = SLANG_SPEC_MAT43;
+      break;
+   case TYPE_SPECIFIER_SAMPLER1D:
+      spec->type = SLANG_SPEC_SAMPLER1D;
+      break;
+   case TYPE_SPECIFIER_SAMPLER2D:
+      spec->type = SLANG_SPEC_SAMPLER2D;
+      break;
+   case TYPE_SPECIFIER_SAMPLER3D:
+      spec->type = SLANG_SPEC_SAMPLER3D;
+      break;
+   case TYPE_SPECIFIER_SAMPLERCUBE:
+      spec->type = SLANG_SPEC_SAMPLERCUBE;
+      break;
+   case TYPE_SPECIFIER_SAMPLER2DRECT:
+      spec->type = SLANG_SPEC_SAMPLER2DRECT;
+      break;
+   case TYPE_SPECIFIER_SAMPLER1DSHADOW:
+      spec->type = SLANG_SPEC_SAMPLER1DSHADOW;
+      break;
+   case TYPE_SPECIFIER_SAMPLER2DSHADOW:
+      spec->type = SLANG_SPEC_SAMPLER2DSHADOW;
+      break;
+   case TYPE_SPECIFIER_SAMPLER2DRECTSHADOW:
+      spec->type = SLANG_SPEC_SAMPLER2DRECTSHADOW;
+      break;
+   case TYPE_SPECIFIER_STRUCT:
+      spec->type = SLANG_SPEC_STRUCT;
+      if (!parse_struct(C, O, &spec->_struct))
+         RETURN0;
+      break;
+   case TYPE_SPECIFIER_TYPENAME:
+      spec->type = SLANG_SPEC_STRUCT;
+      {
+         slang_atom a_name;
+         slang_struct *stru;
+
+         a_name = parse_identifier(C);
+         if (a_name == NULL)
+            RETURN0;
+
+         stru = slang_struct_scope_find(O->structs, a_name, 1);
+         if (stru == NULL) {
+            slang_info_log_error(C->L, "undeclared type name '%s'",
+                                 slang_atom_pool_id(C->atoms, a_name));
+            RETURN0;
+         }
+
+         spec->_struct = (slang_struct *) _slang_alloc(sizeof(slang_struct));
+         if (spec->_struct == NULL) {
+            slang_info_log_memory(C->L);
+            RETURN0;
+         }
+         if (!slang_struct_construct(spec->_struct)) {
+            _slang_free(spec->_struct);
+            spec->_struct = NULL;
+            RETURN0;
+         }
+         if (!slang_struct_copy(spec->_struct, stru))
+            RETURN0;
+      }
+      break;
+   default:
+      RETURN0;
+   }
+   return 1;
+}
+
+#define TYPE_SPECIFIER_NONARRAY 0
+#define TYPE_SPECIFIER_ARRAY    1
+
+static int
+parse_type_array_size(slang_parse_ctx *C,
+                      slang_output_ctx *O,
+                      GLint *array_len)
+{
+   GLuint size;
+
+   switch (*C->I++) {
+   case TYPE_SPECIFIER_NONARRAY:
+      *array_len = -1; /* -1 = not an array */
+      break;
+   case TYPE_SPECIFIER_ARRAY:
+      if (!parse_array_len(C, O, &size))
+         RETURN0;
+      *array_len = (GLint) size;
+      break;
+   default:
+      assert(0);
+      RETURN0;
+   }
+   return 1;
+}
+
+#define PRECISION_DEFAULT 0
+#define PRECISION_LOW     1
+#define PRECISION_MEDIUM  2
+#define PRECISION_HIGH    3
+
+static int
+parse_type_precision(slang_parse_ctx *C,
+                     slang_type_precision *precision)
+{
+   GLint prec = *C->I++;
+   switch (prec) {
+   case PRECISION_DEFAULT:
+      *precision = SLANG_PREC_DEFAULT;
+      return 1;
+   case PRECISION_LOW:
+      *precision = SLANG_PREC_LOW;
+      return 1;
+   case PRECISION_MEDIUM:
+      *precision = SLANG_PREC_MEDIUM;
+      return 1;
+   case PRECISION_HIGH:
+      *precision = SLANG_PREC_HIGH;
+      return 1;
+   default:
+      RETURN0;
+   }
+}
+
+static int
+parse_fully_specified_type(slang_parse_ctx * C, slang_output_ctx * O,
+                           slang_fully_specified_type * type)
+{
+   if (!parse_type_variant(C, &type->variant))
+      RETURN0;
+  
+   if (!parse_type_centroid(C, &type->centroid))
+      RETURN0;
+
+   if (!parse_type_qualifier(C, &type->qualifier))
+      RETURN0;
+
+   if (!parse_type_precision(C, &type->precision))
+      RETURN0;
+
+   if (!parse_type_specifier(C, O, &type->specifier))
+      RETURN0;
+
+   if (!parse_type_array_size(C, O, &type->array_len))
+      RETURN0;
+
+   if (!O->allow_invariant && type->variant == SLANG_INVARIANT) {
+      slang_info_log_error(C->L,
+         "'invariant' keyword not allowed (perhaps set #version 120)");
+      RETURN0;
+   }
+
+   if (!O->allow_centroid && type->centroid == SLANG_CENTROID) {
+      slang_info_log_error(C->L,
+         "'centroid' keyword not allowed (perhaps set #version 120)");
+      RETURN0;
+   }
+   else if (type->centroid == SLANG_CENTROID &&
+            type->qualifier != SLANG_QUAL_VARYING) {
+      slang_info_log_error(C->L,
+         "'centroid' keyword only allowed for varying vars");
+      RETURN0;
+   }
+
+
+   /* need this?
+   if (type->qualifier != SLANG_QUAL_VARYING &&
+       type->variant == SLANG_INVARIANT) {
+      slang_info_log_error(C->L,
+                           "invariant qualifer only allowed for varying vars");
+      RETURN0;
+   }
+   */
+
+   if (O->allow_precision) {
+      if (type->precision == SLANG_PREC_DEFAULT) {
+         assert(type->specifier.type < TYPE_SPECIFIER_COUNT);
+         /* use the default precision for this datatype */
+         type->precision = O->default_precision[type->specifier.type];
+      }
+   }
+   else {
+      /* only default is allowed */
+      if (type->precision != SLANG_PREC_DEFAULT) {
+         slang_info_log_error(C->L, "precision qualifiers not allowed");
+         RETURN0;
+      }
+   }
+
+   if (!O->allow_array_types && type->array_len >= 0) {
+      slang_info_log_error(C->L, "first-class array types not allowed");
+      RETURN0;
+   }
+
+   if (type->array_len >= 0) {
+      /* convert type to array type (ex: convert "int" to "array of int" */
+      promote_type_to_array(C, type, type->array_len);
+   }
+
+   return 1;
+}
+
+/* operation */
+#define OP_END 0
+#define OP_BLOCK_BEGIN_NO_NEW_SCOPE 1
+#define OP_BLOCK_BEGIN_NEW_SCOPE 2
+#define OP_DECLARE 3
+#define OP_ASM 4
+#define OP_BREAK 5
+#define OP_CONTINUE 6
+#define OP_DISCARD 7
+#define OP_RETURN 8
+#define OP_EXPRESSION 9
+#define OP_IF 10
+#define OP_WHILE 11
+#define OP_DO 12
+#define OP_FOR 13
+#define OP_PUSH_VOID 14
+#define OP_PUSH_BOOL 15
+#define OP_PUSH_INT 16
+#define OP_PUSH_FLOAT 17
+#define OP_PUSH_IDENTIFIER 18
+#define OP_SEQUENCE 19
+#define OP_ASSIGN 20
+#define OP_ADDASSIGN 21
+#define OP_SUBASSIGN 22
+#define OP_MULASSIGN 23
+#define OP_DIVASSIGN 24
+/*#define OP_MODASSIGN 25*/
+/*#define OP_LSHASSIGN 26*/
+/*#define OP_RSHASSIGN 27*/
+/*#define OP_ORASSIGN 28*/
+/*#define OP_XORASSIGN 29*/
+/*#define OP_ANDASSIGN 30*/
+#define OP_SELECT 31
+#define OP_LOGICALOR 32
+#define OP_LOGICALXOR 33
+#define OP_LOGICALAND 34
+/*#define OP_BITOR 35*/
+/*#define OP_BITXOR 36*/
+/*#define OP_BITAND 37*/
+#define OP_EQUAL 38
+#define OP_NOTEQUAL 39
+#define OP_LESS 40
+#define OP_GREATER 41
+#define OP_LESSEQUAL 42
+#define OP_GREATEREQUAL 43
+/*#define OP_LSHIFT 44*/
+/*#define OP_RSHIFT 45*/
+#define OP_ADD 46
+#define OP_SUBTRACT 47
+#define OP_MULTIPLY 48
+#define OP_DIVIDE 49
+/*#define OP_MODULUS 50*/
+#define OP_PREINCREMENT 51
+#define OP_PREDECREMENT 52
+#define OP_PLUS 53
+#define OP_MINUS 54
+/*#define OP_COMPLEMENT 55*/
+#define OP_NOT 56
+#define OP_SUBSCRIPT 57
+#define OP_CALL 58
+#define OP_FIELD 59
+#define OP_POSTINCREMENT 60
+#define OP_POSTDECREMENT 61
+#define OP_PRECISION 62
+#define OP_METHOD 63
+
+
+/**
+ * When parsing a compound production, this function is used to parse the
+ * children.
+ * For example, a while-loop compound will have two children, the
+ * while condition expression and the loop body.  So, this function will
+ * be called twice to parse those two sub-expressions.
+ * \param C  the parsing context
+ * \param O  the output context
+ * \param oper  the operation we're parsing
+ * \param statement  indicates whether parsing a statement, or expression
+ * \return 1 if success, 0 if error
+ */
+static int
+parse_child_operation(slang_parse_ctx * C, slang_output_ctx * O,
+                      slang_operation * oper, GLboolean statement)
+{
+   slang_operation *ch;
+
+   /* grow child array */
+   ch = slang_operation_grow(&oper->num_children, &oper->children);
+   if (statement)
+      return parse_statement(C, O, ch);
+   return parse_expression(C, O, ch);
+}
+
+static int parse_declaration(slang_parse_ctx * C, slang_output_ctx * O);
+
+static int
+parse_statement(slang_parse_ctx * C, slang_output_ctx * O,
+                slang_operation * oper)
+{
+   int op;
+
+   oper->locals->outer_scope = O->vars;
+
+   op = *C->I++;
+   switch (op) {
+   case OP_BLOCK_BEGIN_NO_NEW_SCOPE:
+      /* parse child statements, do not create new variable scope */
+      oper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
+      while (*C->I != OP_END)
+         if (!parse_child_operation(C, O, oper, GL_TRUE))
+            RETURN0;
+      C->I++;
+      break;
+   case OP_BLOCK_BEGIN_NEW_SCOPE:
+      /* parse child statements, create new variable scope */
+      {
+         slang_output_ctx o = *O;
+
+         oper->type = SLANG_OPER_BLOCK_NEW_SCOPE;
+         o.vars = oper->locals;
+         while (*C->I != OP_END)
+            if (!parse_child_operation(C, &o, oper, GL_TRUE))
+               RETURN0;
+         C->I++;
+      }
+      break;
+   case OP_DECLARE:
+      /* local variable declaration, individual declarators are stored as
+       * children identifiers
+       */
+      oper->type = SLANG_OPER_BLOCK_NO_NEW_SCOPE;
+      {
+         const unsigned int first_var = O->vars->num_variables;
+
+         /* parse the declaration, note that there can be zero or more
+          * than one declarators
+          */
+         if (!parse_declaration(C, O))
+            RETURN0;
+         if (first_var < O->vars->num_variables) {
+            const unsigned int num_vars = O->vars->num_variables - first_var;
+            unsigned int i;
+            assert(oper->num_children == 0);
+            oper->num_children = num_vars;
+            oper->children = slang_operation_new(num_vars);
+            if (oper->children == NULL) {
+               slang_info_log_memory(C->L);
+               RETURN0;
+            }
+            for (i = first_var; i < O->vars->num_variables; i++) {
+               slang_operation *o = &oper->children[i - first_var];
+               slang_variable *var = O->vars->variables[i];
+               o->type = SLANG_OPER_VARIABLE_DECL;
+               o->locals->outer_scope = O->vars;
+               o->a_id = var->a_name;
+
+               /* new/someday...
+               calculate_var_size(C, O, var);
+               */
+
+               if (!legal_identifier(o->a_id)) {
+                  slang_info_log_error(C->L, "illegal variable name '%s'",
+                                       (char *) o->a_id);
+                  RETURN0;
+               }
+            }
+         }
+      }
+      break;
+   case OP_ASM:
+      /* the __asm statement, parse the mnemonic and all its arguments
+       * as expressions
+       */
+      oper->type = SLANG_OPER_ASM;
+      oper->a_id = parse_identifier(C);
+      if (oper->a_id == SLANG_ATOM_NULL)
+         RETURN0;
+      while (*C->I != OP_END) {
+         if (!parse_child_operation(C, O, oper, GL_FALSE))
+            RETURN0;
+      }
+      C->I++;
+      break;
+   case OP_BREAK:
+      oper->type = SLANG_OPER_BREAK;
+      break;
+   case OP_CONTINUE:
+      oper->type = SLANG_OPER_CONTINUE;
+      break;
+   case OP_DISCARD:
+      oper->type = SLANG_OPER_DISCARD;
+      break;
+   case OP_RETURN:
+      oper->type = SLANG_OPER_RETURN;
+      if (!parse_child_operation(C, O, oper, GL_FALSE))
+         RETURN0;
+      break;
+   case OP_EXPRESSION:
+      oper->type = SLANG_OPER_EXPRESSION;
+      if (!parse_child_operation(C, O, oper, GL_FALSE))
+         RETURN0;
+      break;
+   case OP_IF:
+      oper->type = SLANG_OPER_IF;
+      if (!parse_child_operation(C, O, oper, GL_FALSE))
+         RETURN0;
+      if (!parse_child_operation(C, O, oper, GL_TRUE))
+         RETURN0;
+      if (!parse_child_operation(C, O, oper, GL_TRUE))
+         RETURN0;
+      break;
+   case OP_WHILE:
+      {
+         slang_output_ctx o = *O;
+
+         oper->type = SLANG_OPER_WHILE;
+         o.vars = oper->locals;
+         if (!parse_child_operation(C, &o, oper, GL_TRUE))
+            RETURN0;
+         if (!parse_child_operation(C, &o, oper, GL_TRUE))
+            RETURN0;
+      }
+      break;
+   case OP_DO:
+      oper->type = SLANG_OPER_DO;
+      if (!parse_child_operation(C, O, oper, GL_TRUE))
+         RETURN0;
+      if (!parse_child_operation(C, O, oper, GL_FALSE))
+         RETURN0;
+      break;
+   case OP_FOR:
+      {
+         slang_output_ctx o = *O;
+
+         oper->type = SLANG_OPER_FOR;
+         o.vars = oper->locals;
+         if (!parse_child_operation(C, &o, oper, GL_TRUE))
+            RETURN0;
+         if (!parse_child_operation(C, &o, oper, GL_TRUE))
+            RETURN0;
+         if (!parse_child_operation(C, &o, oper, GL_FALSE))
+            RETURN0;
+         if (!parse_child_operation(C, &o, oper, GL_TRUE))
+            RETURN0;
+      }
+      break;
+   case OP_PRECISION:
+      {
+         /* set default precision for a type in this scope */
+         /* ignored at this time */
+         int prec_qual = *C->I++;
+         int datatype = *C->I++;
+         (void) prec_qual;
+         (void) datatype;
+      }
+      break;
+   default:
+      /*printf("Unexpected operation %d\n", op);*/
+      RETURN0;
+   }
+   return 1;
+}
+
+static int
+handle_nary_expression(slang_parse_ctx * C, slang_operation * op,
+                       slang_operation ** ops, unsigned int *total_ops,
+                       unsigned int n)
+{
+   unsigned int i;
+
+   op->children = slang_operation_new(n);
+   if (op->children == NULL) {
+      slang_info_log_memory(C->L);
+      RETURN0;
+   }
+   op->num_children = n;
+
+   for (i = 0; i < n; i++) {
+      slang_operation_destruct(&op->children[i]);
+      op->children[i] = (*ops)[*total_ops - (n + 1 - i)];
+   }
+
+   (*ops)[*total_ops - (n + 1)] = (*ops)[*total_ops - 1];
+   *total_ops -= n;
+
+   *ops = (slang_operation *)
+      _slang_realloc(*ops,
+                     (*total_ops + n) * sizeof(slang_operation),
+                     *total_ops * sizeof(slang_operation));
+   if (*ops == NULL) {
+      slang_info_log_memory(C->L);
+      RETURN0;
+   }
+   return 1;
+}
+
+static int
+is_constructor_name(const char *name, slang_atom a_name,
+                    slang_struct_scope * structs)
+{
+   if (slang_type_specifier_type_from_string(name) != SLANG_SPEC_VOID)
+      return 1;
+   return slang_struct_scope_find(structs, a_name, 1) != NULL;
+}
+
+#define FUNCTION_CALL_NONARRAY 0
+#define FUNCTION_CALL_ARRAY    1
+
+static int
+parse_expression(slang_parse_ctx * C, slang_output_ctx * O,
+                 slang_operation * oper)
+{
+   slang_operation *ops = NULL;
+   unsigned int num_ops = 0;
+   int number;
+
+   while (*C->I != OP_END) {
+      slang_operation *op;
+      const unsigned int op_code = *C->I++;
+
+      /* allocate default operation, becomes a no-op if not used  */
+      ops = (slang_operation *)
+         _slang_realloc(ops,
+                        num_ops * sizeof(slang_operation),
+                        (num_ops + 1) * sizeof(slang_operation));
+      if (ops == NULL) {
+         slang_info_log_memory(C->L);
+         RETURN0;
+      }
+      op = &ops[num_ops];
+      if (!slang_operation_construct(op)) {
+         slang_info_log_memory(C->L);
+         RETURN0;
+      }
+      num_ops++;
+      op->locals->outer_scope = O->vars;
+
+      switch (op_code) {
+      case OP_PUSH_VOID:
+         op->type = SLANG_OPER_VOID;
+         break;
+      case OP_PUSH_BOOL:
+         op->type = SLANG_OPER_LITERAL_BOOL;
+         if (!parse_number(C, &number))
+            RETURN0;
+         op->literal[0] =
+         op->literal[1] =
+         op->literal[2] =
+         op->literal[3] = (GLfloat) number;
+         op->literal_size = 1;
+         break;
+      case OP_PUSH_INT:
+         op->type = SLANG_OPER_LITERAL_INT;
+         if (!parse_number(C, &number))
+            RETURN0;
+         op->literal[0] =
+         op->literal[1] =
+         op->literal[2] =
+         op->literal[3] = (GLfloat) number;
+         op->literal_size = 1;
+         break;
+      case OP_PUSH_FLOAT:
+         op->type = SLANG_OPER_LITERAL_FLOAT;
+         if (!parse_float(C, &op->literal[0]))
+            RETURN0;
+         op->literal[1] =
+         op->literal[2] =
+         op->literal[3] = op->literal[0];
+         op->literal_size = 1;
+         break;
+      case OP_PUSH_IDENTIFIER:
+         op->type = SLANG_OPER_IDENTIFIER;
+         op->a_id = parse_identifier(C);
+         if (op->a_id == SLANG_ATOM_NULL)
+            RETURN0;
+         break;
+      case OP_SEQUENCE:
+         op->type = SLANG_OPER_SEQUENCE;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_ASSIGN:
+         op->type = SLANG_OPER_ASSIGN;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_ADDASSIGN:
+         op->type = SLANG_OPER_ADDASSIGN;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_SUBASSIGN:
+         op->type = SLANG_OPER_SUBASSIGN;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_MULASSIGN:
+         op->type = SLANG_OPER_MULASSIGN;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_DIVASSIGN:
+         op->type = SLANG_OPER_DIVASSIGN;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+         /*case OP_MODASSIGN: */
+         /*case OP_LSHASSIGN: */
+         /*case OP_RSHASSIGN: */
+         /*case OP_ORASSIGN: */
+         /*case OP_XORASSIGN: */
+         /*case OP_ANDASSIGN: */
+      case OP_SELECT:
+         op->type = SLANG_OPER_SELECT;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 3))
+            RETURN0;
+         break;
+      case OP_LOGICALOR:
+         op->type = SLANG_OPER_LOGICALOR;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_LOGICALXOR:
+         op->type = SLANG_OPER_LOGICALXOR;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_LOGICALAND:
+         op->type = SLANG_OPER_LOGICALAND;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+         /*case OP_BITOR: */
+         /*case OP_BITXOR: */
+         /*case OP_BITAND: */
+      case OP_EQUAL:
+         op->type = SLANG_OPER_EQUAL;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_NOTEQUAL:
+         op->type = SLANG_OPER_NOTEQUAL;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_LESS:
+         op->type = SLANG_OPER_LESS;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_GREATER:
+         op->type = SLANG_OPER_GREATER;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_LESSEQUAL:
+         op->type = SLANG_OPER_LESSEQUAL;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_GREATEREQUAL:
+         op->type = SLANG_OPER_GREATEREQUAL;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+         /*case OP_LSHIFT: */
+         /*case OP_RSHIFT: */
+      case OP_ADD:
+         op->type = SLANG_OPER_ADD;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_SUBTRACT:
+         op->type = SLANG_OPER_SUBTRACT;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_MULTIPLY:
+         op->type = SLANG_OPER_MULTIPLY;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_DIVIDE:
+         op->type = SLANG_OPER_DIVIDE;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+         /*case OP_MODULUS: */
+      case OP_PREINCREMENT:
+         op->type = SLANG_OPER_PREINCREMENT;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
+            RETURN0;
+         break;
+      case OP_PREDECREMENT:
+         op->type = SLANG_OPER_PREDECREMENT;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
+            RETURN0;
+         break;
+      case OP_PLUS:
+         op->type = SLANG_OPER_PLUS;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
+            RETURN0;
+         break;
+      case OP_MINUS:
+         op->type = SLANG_OPER_MINUS;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
+            RETURN0;
+         break;
+      case OP_NOT:
+         op->type = SLANG_OPER_NOT;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
+            RETURN0;
+         break;
+         /*case OP_COMPLEMENT: */
+      case OP_SUBSCRIPT:
+         op->type = SLANG_OPER_SUBSCRIPT;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 2))
+            RETURN0;
+         break;
+      case OP_METHOD:
+         op->type = SLANG_OPER_METHOD;
+         op->a_obj = parse_identifier(C);
+         if (op->a_obj == SLANG_ATOM_NULL)
+            RETURN0;
+
+         op->a_id = parse_identifier(C);
+         if (op->a_id == SLANG_ATOM_NULL)
+            RETURN0;
+
+         assert(*C->I == OP_END);
+         C->I++;
+
+         while (*C->I != OP_END)
+            if (!parse_child_operation(C, O, op, GL_FALSE))
+               RETURN0;
+         C->I++;
+#if 0
+         /* don't lookup the method (not yet anyway) */
+         if (!C->parsing_builtin
+             && !slang_function_scope_find_by_name(O->funs, op->a_id, 1)) {
+            const char *id;
+
+            id = slang_atom_pool_id(C->atoms, op->a_id);
+            if (!is_constructor_name(id, op->a_id, O->structs)) {
+               slang_info_log_error(C->L, "%s: undeclared function name.", id);
+               RETURN0;
+            }
+         }
+#endif
+         break;
+      case OP_CALL:
+         {
+            GLboolean array_constructor = GL_FALSE;
+            GLint array_constructor_size = 0;
+
+            op->type = SLANG_OPER_CALL;
+            op->a_id = parse_identifier(C);
+            if (op->a_id == SLANG_ATOM_NULL)
+               RETURN0;
+            switch (*C->I++) {
+            case FUNCTION_CALL_NONARRAY:
+               /* Nothing to do. */
+               break;
+            case FUNCTION_CALL_ARRAY:
+               /* Calling an array constructor. For example:
+                *   float[3](1.1, 2.2, 3.3);
+                */
+               if (!O->allow_array_types) {
+                  slang_info_log_error(C->L,
+                                       "array constructors not allowed "
+                                       "in this GLSL version");
+                  RETURN0;
+               }
+               else {
+                  /* parse the array constructor size */
+                  slang_operation array_size;
+                  array_constructor = GL_TRUE;
+                  slang_operation_construct(&array_size);
+                  if (!parse_expression(C, O, &array_size)) {
+                     slang_operation_destruct(&array_size);
+                     return GL_FALSE;
+                  }
+                  if (array_size.type != SLANG_OPER_LITERAL_INT) {
+                     slang_info_log_error(C->L,
+                        "constructor array size is not an integer");
+                     slang_operation_destruct(&array_size);
+                     RETURN0;
+                  }
+                  array_constructor_size = (int) array_size.literal[0];
+                  op->array_constructor = GL_TRUE;
+                  slang_operation_destruct(&array_size);
+               }
+               break;
+            default:
+               assert(0);
+               RETURN0;
+            }
+            while (*C->I != OP_END)
+               if (!parse_child_operation(C, O, op, GL_FALSE))
+                  RETURN0;
+            C->I++;
+
+            if (array_constructor &&
+                array_constructor_size != op->num_children) {
+               slang_info_log_error(C->L, "number of parameters to array"
+                                    " constructor does not match array size");
+               RETURN0;
+            }
+
+            if (!C->parsing_builtin
+                && !slang_function_scope_find_by_name(O->funs, op->a_id, 1)) {
+               const char *id;
+
+               id = slang_atom_pool_id(C->atoms, op->a_id);
+               if (!is_constructor_name(id, op->a_id, O->structs)) {
+                  slang_info_log_error(C->L, "%s: undeclared function name.", id);
+                  RETURN0;
+               }
+            }
+         }
+         break;
+      case OP_FIELD:
+         op->type = SLANG_OPER_FIELD;
+         op->a_id = parse_identifier(C);
+         if (op->a_id == SLANG_ATOM_NULL)
+            RETURN0;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
+            RETURN0;
+         break;
+      case OP_POSTINCREMENT:
+         op->type = SLANG_OPER_POSTINCREMENT;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
+            RETURN0;
+         break;
+      case OP_POSTDECREMENT:
+         op->type = SLANG_OPER_POSTDECREMENT;
+         if (!handle_nary_expression(C, op, &ops, &num_ops, 1))
+            RETURN0;
+         break;
+      default:
+         RETURN0;
+      }
+   }
+   C->I++;
+
+   slang_operation_destruct(oper);
+   *oper = *ops; /* struct copy */
+   _slang_free(ops);
+
+   return 1;
+}
+
+/* parameter qualifier */
+#define PARAM_QUALIFIER_IN 0
+#define PARAM_QUALIFIER_OUT 1
+#define PARAM_QUALIFIER_INOUT 2
+
+/* function parameter array presence */
+#define PARAMETER_ARRAY_NOT_PRESENT 0
+#define PARAMETER_ARRAY_PRESENT 1
+
+static int
+parse_parameter_declaration(slang_parse_ctx * C, slang_output_ctx * O,
+                            slang_variable * param)
+{
+   int param_qual, precision_qual;
+
+   /* parse and validate the parameter's type qualifiers (there can be
+    * two at most) because not all combinations are valid
+    */
+   if (!parse_type_qualifier(C, &param->type.qualifier))
+      RETURN0;
+
+   param_qual = *C->I++;
+   switch (param_qual) {
+   case PARAM_QUALIFIER_IN:
+      if (param->type.qualifier != SLANG_QUAL_CONST
+          && param->type.qualifier != SLANG_QUAL_NONE) {
+         slang_info_log_error(C->L, "Invalid type qualifier.");
+         RETURN0;
+      }
+      break;
+   case PARAM_QUALIFIER_OUT:
+      if (param->type.qualifier == SLANG_QUAL_NONE)
+         param->type.qualifier = SLANG_QUAL_OUT;
+      else {
+         slang_info_log_error(C->L, "Invalid type qualifier.");
+         RETURN0;
+      }
+      break;
+   case PARAM_QUALIFIER_INOUT:
+      if (param->type.qualifier == SLANG_QUAL_NONE)
+         param->type.qualifier = SLANG_QUAL_INOUT;
+      else {
+         slang_info_log_error(C->L, "Invalid type qualifier.");
+         RETURN0;
+      }
+      break;
+   default:
+      RETURN0;
+   }
+
+   /* parse precision qualifier (lowp, mediump, highp */
+   precision_qual = *C->I++;
+   /* ignored at this time */
+   (void) precision_qual;
+
+   /* parse parameter's type specifier and name */
+   if (!parse_type_specifier(C, O, &param->type.specifier))
+      RETURN0;
+   if (!parse_type_array_size(C, O, &param->type.array_len))
+      RETURN0;
+   param->a_name = parse_identifier(C);
+   if (param->a_name == SLANG_ATOM_NULL)
+      RETURN0;
+
+   /* first-class array
+    */
+   if (param->type.array_len >= 0) {
+      slang_type_specifier p;
+
+      slang_type_specifier_ctr(&p);
+      if (!slang_type_specifier_copy(&p, &param->type.specifier)) {
+         slang_type_specifier_dtr(&p);
+         RETURN0;
+      }
+      if (!convert_to_array(C, param, &p)) {
+         slang_type_specifier_dtr(&p);
+         RETURN0;
+      }
+      slang_type_specifier_dtr(&p);
+      param->array_len = param->type.array_len;
+   }
+
+   /* if the parameter is an array, parse its size (the size must be
+    * explicitly defined
+    */
+   if (*C->I++ == PARAMETER_ARRAY_PRESENT) {
+      slang_type_specifier p;
+
+      if (param->type.array_len >= 0) {
+         slang_info_log_error(C->L, "multi-dimensional arrays not allowed");
+         RETURN0;
+      }
+      slang_type_specifier_ctr(&p);
+      if (!slang_type_specifier_copy(&p, &param->type.specifier)) {
+         slang_type_specifier_dtr(&p);
+         RETURN0;
+      }
+      if (!convert_to_array(C, param, &p)) {
+         slang_type_specifier_dtr(&p);
+         RETURN0;
+      }
+      slang_type_specifier_dtr(&p);
+      if (!parse_array_len(C, O, &param->array_len))
+         RETURN0;
+   }
+
+#if 0
+   /* calculate the parameter size */
+   if (!calculate_var_size(C, O, param))
+      RETURN0;
+#endif
+   /* TODO: allocate the local address here? */
+   return 1;
+}
+
+/* function type */
+#define FUNCTION_ORDINARY 0
+#define FUNCTION_CONSTRUCTOR 1
+#define FUNCTION_OPERATOR 2
+
+/* function parameter */
+#define PARAMETER_NONE 0
+#define PARAMETER_NEXT 1
+
+/* operator type */
+#define OPERATOR_ADDASSIGN 1
+#define OPERATOR_SUBASSIGN 2
+#define OPERATOR_MULASSIGN 3
+#define OPERATOR_DIVASSIGN 4
+/*#define OPERATOR_MODASSIGN 5*/
+/*#define OPERATOR_LSHASSIGN 6*/
+/*#define OPERATOR_RSHASSIGN 7*/
+/*#define OPERATOR_ANDASSIGN 8*/
+/*#define OPERATOR_XORASSIGN 9*/
+/*#define OPERATOR_ORASSIGN 10*/
+#define OPERATOR_LOGICALXOR 11
+/*#define OPERATOR_BITOR 12*/
+/*#define OPERATOR_BITXOR 13*/
+/*#define OPERATOR_BITAND 14*/
+#define OPERATOR_LESS 15
+#define OPERATOR_GREATER 16
+#define OPERATOR_LESSEQUAL 17
+#define OPERATOR_GREATEREQUAL 18
+/*#define OPERATOR_LSHIFT 19*/
+/*#define OPERATOR_RSHIFT 20*/
+#define OPERATOR_MULTIPLY 21
+#define OPERATOR_DIVIDE 22
+/*#define OPERATOR_MODULUS 23*/
+#define OPERATOR_INCREMENT 24
+#define OPERATOR_DECREMENT 25
+#define OPERATOR_PLUS 26
+#define OPERATOR_MINUS 27
+/*#define OPERATOR_COMPLEMENT 28*/
+#define OPERATOR_NOT 29
+
+static const struct
+{
+   unsigned int o_code;
+   const char *o_name;
+} operator_names[] = {
+   {OPERATOR_INCREMENT, "++"},
+   {OPERATOR_ADDASSIGN, "+="},
+   {OPERATOR_PLUS, "+"},
+   {OPERATOR_DECREMENT, "--"},
+   {OPERATOR_SUBASSIGN, "-="},
+   {OPERATOR_MINUS, "-"},
+   {OPERATOR_NOT, "!"},
+   {OPERATOR_MULASSIGN, "*="},
+   {OPERATOR_MULTIPLY, "*"},
+   {OPERATOR_DIVASSIGN, "/="},
+   {OPERATOR_DIVIDE, "/"},
+   {OPERATOR_LESSEQUAL, "<="},
+   /*{ OPERATOR_LSHASSIGN, "<<=" }, */
+   /*{ OPERATOR_LSHIFT, "<<" }, */
+   {OPERATOR_LESS, "<"},
+   {OPERATOR_GREATEREQUAL, ">="},
+   /*{ OPERATOR_RSHASSIGN, ">>=" }, */
+   /*{ OPERATOR_RSHIFT, ">>" }, */
+   {OPERATOR_GREATER, ">"},
+   /*{ OPERATOR_MODASSIGN, "%=" }, */
+   /*{ OPERATOR_MODULUS, "%" }, */
+   /*{ OPERATOR_ANDASSIGN, "&=" }, */
+   /*{ OPERATOR_BITAND, "&" }, */
+   /*{ OPERATOR_ORASSIGN, "|=" }, */
+   /*{ OPERATOR_BITOR, "|" }, */
+   /*{ OPERATOR_COMPLEMENT, "~" }, */
+   /*{ OPERATOR_XORASSIGN, "^=" }, */
+   {OPERATOR_LOGICALXOR, "^^"},
+   /*{ OPERATOR_BITXOR, "^" } */
+};
+
+static slang_atom
+parse_operator_name(slang_parse_ctx * C)
+{
+   unsigned int i;
+
+   for (i = 0; i < sizeof(operator_names) / sizeof(*operator_names); i++) {
+      if (operator_names[i].o_code == (unsigned int) (*C->I)) {
+         slang_atom atom =
+            slang_atom_pool_atom(C->atoms, operator_names[i].o_name);
+         if (atom == SLANG_ATOM_NULL) {
+            slang_info_log_memory(C->L);
+            RETURN0;
+         }
+         C->I++;
+         return atom;
+      }
+   }
+   RETURN0;
+}
+
+
+static int
+parse_function_prototype(slang_parse_ctx * C, slang_output_ctx * O,
+                         slang_function * func)
+{
+   GLuint functype;
+   /* parse function type and name */
+   if (!parse_fully_specified_type(C, O, &func->header.type))
+      RETURN0;
+
+   functype = *C->I++;
+   switch (functype) {
+   case FUNCTION_ORDINARY:
+      func->kind = SLANG_FUNC_ORDINARY;
+      func->header.a_name = parse_identifier(C);
+      if (func->header.a_name == SLANG_ATOM_NULL)
+         RETURN0;
+      break;
+   case FUNCTION_CONSTRUCTOR:
+      func->kind = SLANG_FUNC_CONSTRUCTOR;
+      if (func->header.type.specifier.type == SLANG_SPEC_STRUCT)
+         RETURN0;
+      func->header.a_name =
+         slang_atom_pool_atom(C->atoms,
+                              slang_type_specifier_type_to_string
+                              (func->header.type.specifier.type));
+      if (func->header.a_name == SLANG_ATOM_NULL) {
+         slang_info_log_memory(C->L);
+         RETURN0;
+      }
+      break;
+   case FUNCTION_OPERATOR:
+      func->kind = SLANG_FUNC_OPERATOR;
+      func->header.a_name = parse_operator_name(C);
+      if (func->header.a_name == SLANG_ATOM_NULL)
+         RETURN0;
+      break;
+   default:
+      RETURN0;
+   }
+
+   if (!legal_identifier(func->header.a_name)) {
+      slang_info_log_error(C->L, "illegal function name '%s'",
+                           (char *) func->header.a_name);
+      RETURN0;
+   }
+
+   /* parse function parameters */
+   while (*C->I++ == PARAMETER_NEXT) {
+      slang_variable *p = slang_variable_scope_grow(func->parameters);
+      if (!p) {
+         slang_info_log_memory(C->L);
+         RETURN0;
+      }
+      if (!parse_parameter_declaration(C, O, p))
+         RETURN0;
+   }
+
+   /* if the function returns a value, append a hidden __retVal 'out'
+    * parameter that corresponds to the return value.
+    */
+   if (_slang_function_has_return_value(func)) {
+      slang_variable *p = slang_variable_scope_grow(func->parameters);
+      slang_atom a_retVal = slang_atom_pool_atom(C->atoms, "__retVal");
+      assert(a_retVal);
+      p->a_name = a_retVal;
+      p->type = func->header.type;
+      p->type.qualifier = SLANG_QUAL_OUT;
+   }
+
+   /* function formal parameters and local variables share the same
+    * scope, so save the information about param count in a seperate
+    * place also link the scope to the global variable scope so when a
+    * given identifier is not found here, the search process continues
+    * in the global space
+    */
+   func->param_count = func->parameters->num_variables;
+   func->parameters->outer_scope = O->vars;
+
+   return 1;
+}
+
+static int
+parse_function_definition(slang_parse_ctx * C, slang_output_ctx * O,
+                          slang_function * func)
+{
+   slang_output_ctx o = *O;
+
+   if (!parse_function_prototype(C, O, func))
+      RETURN0;
+
+   /* create function's body operation */
+   func->body = (slang_operation *) _slang_alloc(sizeof(slang_operation));
+   if (func->body == NULL) {
+      slang_info_log_memory(C->L);
+      RETURN0;
+   }
+   if (!slang_operation_construct(func->body)) {
+      _slang_free(func->body);
+      func->body = NULL;
+      slang_info_log_memory(C->L);
+      RETURN0;
+   }
+
+   /* to parse the body the parse context is modified in order to
+    * capture parsed variables into function's local variable scope
+    */
+   C->global_scope = GL_FALSE;
+   o.vars = func->parameters;
+   if (!parse_statement(C, &o, func->body))
+      RETURN0;
+
+   C->global_scope = GL_TRUE;
+   return 1;
+}
+
+static GLboolean
+initialize_global(slang_assemble_ctx * A, slang_variable * var)
+{
+   slang_operation op_id, op_assign;
+   GLboolean result;
+
+   /* construct the left side of assignment */
+   if (!slang_operation_construct(&op_id))
+      return GL_FALSE;
+   op_id.type = SLANG_OPER_IDENTIFIER;
+   op_id.a_id = var->a_name;
+
+   /* put the variable into operation's scope */
+   op_id.locals->variables =
+      (slang_variable **) _slang_alloc(sizeof(slang_variable *));
+   if (op_id.locals->variables == NULL) {
+      slang_operation_destruct(&op_id);
+      return GL_FALSE;
+   }
+   op_id.locals->num_variables = 1;
+   op_id.locals->variables[0] = var;
+
+   /* construct the assignment expression */
+   if (!slang_operation_construct(&op_assign)) {
+      op_id.locals->num_variables = 0;
+      slang_operation_destruct(&op_id);
+      return GL_FALSE;
+   }
+   op_assign.type = SLANG_OPER_ASSIGN;
+   op_assign.children =
+      (slang_operation *) _slang_alloc(2 * sizeof(slang_operation));
+   if (op_assign.children == NULL) {
+      slang_operation_destruct(&op_assign);
+      op_id.locals->num_variables = 0;
+      slang_operation_destruct(&op_id);
+      return GL_FALSE;
+   }
+   op_assign.num_children = 2;
+   op_assign.children[0] = op_id;
+   op_assign.children[1] = *var->initializer;
+
+   result = 1;
+
+   /* carefully destroy the operations */
+   op_assign.num_children = 0;
+   _slang_free(op_assign.children);
+   op_assign.children = NULL;
+   slang_operation_destruct(&op_assign);
+   op_id.locals->num_variables = 0;
+   slang_operation_destruct(&op_id);
+
+   if (!result)
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+/* init declarator list */
+#define DECLARATOR_NONE 0
+#define DECLARATOR_NEXT 1
+
+/* variable declaration */
+#define VARIABLE_NONE 0
+#define VARIABLE_IDENTIFIER 1
+#define VARIABLE_INITIALIZER 2
+#define VARIABLE_ARRAY_EXPLICIT 3
+#define VARIABLE_ARRAY_UNKNOWN 4
+
+
+/**
+ * Parse the initializer for a variable declaration.
+ */
+static int
+parse_init_declarator(slang_parse_ctx * C, slang_output_ctx * O,
+                      const slang_fully_specified_type * type)
+{
+   GET_CURRENT_CONTEXT(ctx); /* a hack */
+   slang_variable *var;
+   slang_atom a_name;
+
+   /* empty init declatator (without name, e.g. "float ;") */
+   if (*C->I++ == VARIABLE_NONE)
+      return 1;
+
+   a_name = parse_identifier(C);
+
+   /* check if name is already in this scope */
+   if (_slang_variable_locate(O->vars, a_name, GL_FALSE)) {
+      slang_info_log_error(C->L,
+                   "declaration of '%s' conflicts with previous declaration",
+                   (char *) a_name);
+      RETURN0;
+   }
+
+   /* make room for the new variable and initialize it */
+   var = slang_variable_scope_grow(O->vars);
+   if (!var) {
+      slang_info_log_memory(C->L);
+      RETURN0;
+   }
+
+   /* copy the declarator type qualifier/etc info, parse the identifier */
+   var->type.qualifier = type->qualifier;
+   var->type.centroid = type->centroid;
+   var->type.precision = type->precision;
+   var->type.variant = type->variant;
+   var->type.array_len = type->array_len;
+   var->a_name = a_name;
+   if (var->a_name == SLANG_ATOM_NULL)
+      RETURN0;
+
+   switch (*C->I++) {
+   case VARIABLE_NONE:
+      /* simple variable declarator - just copy the specifier */
+      if (!slang_type_specifier_copy(&var->type.specifier, &type->specifier))
+         RETURN0;
+      break;
+   case VARIABLE_INITIALIZER:
+      /* initialized variable - copy the specifier and parse the expression */
+      if (0 && type->array_len >= 0) {
+         /* The type was something like "float[4]" */
+         convert_to_array(C, var, &type->specifier);
+         var->array_len = type->array_len;
+      }
+      else {
+         if (!slang_type_specifier_copy(&var->type.specifier, &type->specifier))
+            RETURN0;
+      }
+      var->initializer =
+         (slang_operation *) _slang_alloc(sizeof(slang_operation));
+      if (var->initializer == NULL) {
+         slang_info_log_memory(C->L);
+         RETURN0;
+      }
+      if (!slang_operation_construct(var->initializer)) {
+         _slang_free(var->initializer);
+         var->initializer = NULL;
+         slang_info_log_memory(C->L);
+         RETURN0;
+      }
+      if (!parse_expression(C, O, var->initializer))
+         RETURN0;
+      break;
+   case VARIABLE_ARRAY_UNKNOWN:
+      /* unsized array - mark it as array and copy the specifier to
+       * the array element
+       */
+      if (type->array_len >= 0) {
+         slang_info_log_error(C->L, "multi-dimensional arrays not allowed");
+         RETURN0;
+      }
+      if (!convert_to_array(C, var, &type->specifier))
+         return GL_FALSE;
+      break;
+   case VARIABLE_ARRAY_EXPLICIT:
+      if (type->array_len >= 0) {
+         /* the user is trying to do something like: float[2] x[3]; */
+         slang_info_log_error(C->L, "multi-dimensional arrays not allowed");
+         RETURN0;
+      }
+      if (!convert_to_array(C, var, &type->specifier))
+         return GL_FALSE;
+      if (!parse_array_len(C, O, &var->array_len))
+         return GL_FALSE;
+      break;
+   default:
+      RETURN0;
+   }
+
+   /* allocate global address space for a variable with a known size */
+   if (C->global_scope
+       && !(var->type.specifier.type == SLANG_SPEC_ARRAY
+            && var->array_len == 0)) {
+      if (!calculate_var_size(C, O, var))
+         return GL_FALSE;
+   }
+
+   /* emit code for global var decl */
+   if (C->global_scope) {
+      slang_assemble_ctx A;
+      memset(&A, 0, sizeof(slang_assemble_ctx));
+      A.atoms = C->atoms;
+      A.space.funcs = O->funs;
+      A.space.structs = O->structs;
+      A.space.vars = O->vars;
+      A.program = O->program;
+      A.pragmas = O->pragmas;
+      A.vartable = O->vartable;
+      A.log = C->L;
+      A.curFuncEndLabel = NULL;
+      A.EmitContReturn = ctx->Shader.EmitContReturn;
+      if (!_slang_codegen_global_variable(&A, var, C->type))
+         RETURN0;
+   }
+
+   /* initialize global variable */
+   if (C->global_scope) {
+      if (var->initializer != NULL) {
+         slang_assemble_ctx A;
+         memset(&A, 0, sizeof(slang_assemble_ctx));
+         A.atoms = C->atoms;
+         A.space.funcs = O->funs;
+         A.space.structs = O->structs;
+         A.space.vars = O->vars;
+         if (!initialize_global(&A, var))
+            RETURN0;
+      }
+   }
+   return 1;
+}
+
+/**
+ * Parse a list of variable declarations.  Each variable may have an
+ * initializer.
+ */
+static int
+parse_init_declarator_list(slang_parse_ctx * C, slang_output_ctx * O)
+{
+   slang_fully_specified_type type;
+
+   /* parse the fully specified type, common to all declarators */
+   if (!slang_fully_specified_type_construct(&type))
+      RETURN0;
+   if (!parse_fully_specified_type(C, O, &type)) {
+      slang_fully_specified_type_destruct(&type);
+      RETURN0;
+   }
+
+   /* parse declarators, pass-in the parsed type */
+   do {
+      if (!parse_init_declarator(C, O, &type)) {
+         slang_fully_specified_type_destruct(&type);
+         RETURN0;
+      }
+   }
+   while (*C->I++ == DECLARATOR_NEXT);
+
+   slang_fully_specified_type_destruct(&type);
+   return 1;
+}
+
+
+/**
+ * Parse a function definition or declaration.
+ * \param C  parsing context
+ * \param O  output context
+ * \param definition if non-zero expect a definition, else a declaration
+ * \param parsed_func_ret  returns the parsed function
+ * \return GL_TRUE if success, GL_FALSE if failure
+ */
+static GLboolean
+parse_function(slang_parse_ctx * C, slang_output_ctx * O, int definition,
+               slang_function ** parsed_func_ret)
+{
+   slang_function parsed_func, *found_func;
+
+   /* parse function definition/declaration */
+   if (!slang_function_construct(&parsed_func))
+      return GL_FALSE;
+   if (definition) {
+      if (!parse_function_definition(C, O, &parsed_func)) {
+         slang_function_destruct(&parsed_func);
+         return GL_FALSE;
+      }
+   }
+   else {
+      if (!parse_function_prototype(C, O, &parsed_func)) {
+         slang_function_destruct(&parsed_func);
+         return GL_FALSE;
+      }
+   }
+
+   /* find a function with a prototype matching the parsed one - only
+    * the current scope is being searched to allow built-in function
+    * overriding
+    */
+   found_func = slang_function_scope_find(O->funs, &parsed_func, 0);
+   if (found_func == NULL) {
+      /* New function, add it to the function list */
+      O->funs->functions =
+         (slang_function *) _slang_realloc(O->funs->functions,
+                                           O->funs->num_functions
+                                           * sizeof(slang_function),
+                                           (O->funs->num_functions + 1)
+                                           * sizeof(slang_function));
+      if (O->funs->functions == NULL) {
+         /* Make sure that there are no functions marked, as the
+          * allocation is currently NULL, in order to avoid
+          * a potental segfault as we clean up later.
+          */
+         O->funs->num_functions = 0;
+
+         slang_info_log_memory(C->L);
+         slang_function_destruct(&parsed_func);
+         return GL_FALSE;
+      }
+      O->funs->functions[O->funs->num_functions] = parsed_func;
+      O->funs->num_functions++;
+
+      /* return the newly parsed function */
+      *parsed_func_ret = &O->funs->functions[O->funs->num_functions - 1];
+   }
+   else {
+      /* previously defined or declared */
+      /* TODO: check function return type qualifiers and specifiers */
+      if (definition) {
+         if (found_func->body != NULL) {
+            slang_info_log_error(C->L, "%s: function already has a body.",
+                                 slang_atom_pool_id(C->atoms,
+                                                    parsed_func.header.
+                                                    a_name));
+            slang_function_destruct(&parsed_func);
+            return GL_FALSE;
+         }
+
+         /* destroy the existing function declaration and replace it
+          * with the new one
+          */
+         slang_function_destruct(found_func);
+         *found_func = parsed_func;
+      }
+      else {
+         /* another declaration of the same function prototype - ignore it */
+         slang_function_destruct(&parsed_func);
+      }
+
+      /* return the found function */
+      *parsed_func_ret = found_func;
+   }
+
+   return GL_TRUE;
+}
+
+/* declaration */
+#define DECLARATION_FUNCTION_PROTOTYPE 1
+#define DECLARATION_INIT_DECLARATOR_LIST 2
+
+static int
+parse_declaration(slang_parse_ctx * C, slang_output_ctx * O)
+{
+   switch (*C->I++) {
+   case DECLARATION_INIT_DECLARATOR_LIST:
+      if (!parse_init_declarator_list(C, O))
+         RETURN0;
+      break;
+   case DECLARATION_FUNCTION_PROTOTYPE:
+      {
+         slang_function *dummy_func;
+
+         if (!parse_function(C, O, 0, &dummy_func))
+            RETURN0;
+      }
+      break;
+   default:
+      RETURN0;
+   }
+   return 1;
+}
+
+static int
+parse_default_precision(slang_parse_ctx * C, slang_output_ctx * O)
+{
+   int precision, type;
+
+   if (!O->allow_precision) {
+      slang_info_log_error(C->L, "syntax error at \"precision\"");
+      RETURN0;
+   }
+
+   precision = *C->I++;
+   switch (precision) {
+   case PRECISION_LOW:
+   case PRECISION_MEDIUM:
+   case PRECISION_HIGH:
+      /* OK */
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected precision %d at %s:%d\n",
+                    precision, __FILE__, __LINE__);
+      RETURN0;
+   }
+
+   type = *C->I++;
+   switch (type) {
+   case TYPE_SPECIFIER_FLOAT:
+   case TYPE_SPECIFIER_INT:
+   case TYPE_SPECIFIER_SAMPLER1D:
+   case TYPE_SPECIFIER_SAMPLER2D:
+   case TYPE_SPECIFIER_SAMPLER3D:
+   case TYPE_SPECIFIER_SAMPLERCUBE:
+   case TYPE_SPECIFIER_SAMPLER1DSHADOW:
+   case TYPE_SPECIFIER_SAMPLER2DSHADOW:
+   case TYPE_SPECIFIER_SAMPLER2DRECT:
+   case TYPE_SPECIFIER_SAMPLER2DRECTSHADOW:
+      /* OK */
+      break;
+   default:
+      _mesa_problem(NULL, "unexpected type %d at %s:%d\n",
+                    type, __FILE__, __LINE__);
+      RETURN0;
+   }
+
+   assert(type < TYPE_SPECIFIER_COUNT);
+   O->default_precision[type] = precision;
+
+   return 1;
+}
+
+
+/**
+ * Initialize the default precision for all types.
+ * XXX this info isn't used yet.
+ */
+static void
+init_default_precision(slang_output_ctx *O, slang_unit_type type)
+{
+   GLuint i;
+   for (i = 0; i < TYPE_SPECIFIER_COUNT; i++) {
+#if FEATURE_es2_glsl
+      O->default_precision[i] = PRECISION_LOW;
+#else
+      O->default_precision[i] = PRECISION_HIGH;
+#endif
+   }
+
+   if (type == SLANG_UNIT_VERTEX_SHADER) {
+      O->default_precision[TYPE_SPECIFIER_FLOAT] = PRECISION_HIGH;
+      O->default_precision[TYPE_SPECIFIER_INT] = PRECISION_HIGH;
+   }
+   else {
+      O->default_precision[TYPE_SPECIFIER_INT] = PRECISION_MEDIUM;
+   }
+}
+
+
+static int
+parse_invariant(slang_parse_ctx * C, slang_output_ctx * O)
+{
+   if (O->allow_invariant) {
+      slang_atom *a = parse_identifier(C);
+      /* XXX not doing anything with this var yet */
+      /*printf("ID: %s\n", (char*) a);*/
+      return a ? 1 : 0;
+   }
+   else {
+      slang_info_log_error(C->L, "syntax error at \"invariant\"");
+      RETURN0;
+   }
+}
+      
+
+/* external declaration or default precision specifier */
+#define EXTERNAL_NULL 0
+#define EXTERNAL_FUNCTION_DEFINITION 1
+#define EXTERNAL_DECLARATION 2
+#define DEFAULT_PRECISION 3
+#define INVARIANT_STMT 4
+
+
+static GLboolean
+parse_code_unit(slang_parse_ctx * C, slang_code_unit * unit,
+                struct gl_shader *shader)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   slang_output_ctx o;
+   GLboolean success;
+   GLuint maxRegs;
+   slang_function *mainFunc = NULL;
+
+   if (unit->type == SLANG_UNIT_FRAGMENT_BUILTIN ||
+       unit->type == SLANG_UNIT_FRAGMENT_SHADER) {
+      maxRegs = ctx->Const.FragmentProgram.MaxTemps;
+   }
+   else {
+      assert(unit->type == SLANG_UNIT_VERTEX_BUILTIN ||
+             unit->type == SLANG_UNIT_VERTEX_SHADER);
+      maxRegs = ctx->Const.VertexProgram.MaxTemps;
+   }
+
+   /* setup output context */
+   o.funs = &unit->funs;
+   o.structs = &unit->structs;
+   o.vars = &unit->vars;
+   o.program = shader ? shader->Program : NULL;
+   o.pragmas = shader ? &shader->Pragmas : NULL;
+   o.vartable = _slang_new_var_table(maxRegs);
+   _slang_push_var_table(o.vartable);
+
+   /* allow 'invariant' keyword? */
+#if FEATURE_es2_glsl
+   o.allow_invariant = GL_TRUE;
+#else
+   o.allow_invariant = (C->version >= 120) ? GL_TRUE : GL_FALSE;
+#endif
+
+   /* allow 'centroid' keyword? */
+   o.allow_centroid = (C->version >= 120) ? GL_TRUE : GL_FALSE;
+
+   /* allow 'lowp/mediump/highp' keywords? */
+#if FEATURE_es2_glsl
+   o.allow_precision = GL_TRUE;
+#else
+   o.allow_precision = (C->version >= 120) ? GL_TRUE : GL_FALSE;
+#endif
+   init_default_precision(&o, unit->type);
+
+   /* allow 'float[]' keyword? */
+   o.allow_array_types = (C->version >= 120) ? GL_TRUE : GL_FALSE;
+
+   /* parse individual functions and declarations */
+   while (*C->I != EXTERNAL_NULL) {
+      switch (*C->I++) {
+      case EXTERNAL_FUNCTION_DEFINITION:
+         {
+            slang_function *func;
+            success = parse_function(C, &o, 1, &func);
+            if (success &&
+                _mesa_strcmp((char *) func->header.a_name, "main") == 0) {
+               /* found main() */
+               mainFunc = func;
+            }
+         }
+         break;
+      case EXTERNAL_DECLARATION:
+         success = parse_declaration(C, &o);
+         break;
+      case DEFAULT_PRECISION:
+         success = parse_default_precision(C, &o);
+         break;
+      case INVARIANT_STMT:
+         success = parse_invariant(C, &o);
+         break;
+      default:
+         success = GL_FALSE;
+      }
+
+      if (!success) {
+         /* xxx free codegen */
+         _slang_pop_var_table(o.vartable);
+         return GL_FALSE;
+      }
+   }
+   C->I++;
+
+   if (mainFunc) {
+      /* assemble (generate code) for main() */
+      slang_assemble_ctx A;
+      memset(&A, 0, sizeof(slang_assemble_ctx));
+      A.atoms = C->atoms;
+      A.space.funcs = o.funs;
+      A.space.structs = o.structs;
+      A.space.vars = o.vars;
+      A.program = o.program;
+      A.pragmas = &shader->Pragmas;
+      A.vartable = o.vartable;
+      A.EmitContReturn = ctx->Shader.EmitContReturn;
+      A.log = C->L;
+
+      /* main() takes no parameters */
+      if (mainFunc->param_count > 0) {
+         slang_info_log_error(A.log, "main() takes no arguments");
+         return GL_FALSE;
+      }
+
+      _slang_codegen_function(&A, mainFunc);
+
+      shader->Main = GL_TRUE; /* this shader defines main() */
+
+      shader->UnresolvedRefs = A.UnresolvedRefs;
+   }
+
+   _slang_pop_var_table(o.vartable);
+   _slang_delete_var_table(o.vartable);
+
+   return GL_TRUE;
+}
+
+static GLboolean
+compile_binary(const byte * prod, slang_code_unit * unit,
+               GLuint version,
+               slang_unit_type type, slang_info_log * infolog,
+               slang_code_unit * builtin, slang_code_unit * downlink,
+               struct gl_shader *shader)
+{
+   slang_parse_ctx C;
+
+   unit->type = type;
+
+   /* setup parse context */
+   C.I = prod;
+   C.L = infolog;
+   C.parsing_builtin = (builtin == NULL);
+   C.global_scope = GL_TRUE;
+   C.atoms = &unit->object->atompool;
+   C.type = type;
+   C.version = version;
+
+   if (!check_revision(&C))
+      return GL_FALSE;
+
+   if (downlink != NULL) {
+      unit->vars.outer_scope = &downlink->vars;
+      unit->funs.outer_scope = &downlink->funs;
+      unit->structs.outer_scope = &downlink->structs;
+   }
+
+   /* parse translation unit */
+   return parse_code_unit(&C, unit, shader);
+}
+
+static GLboolean
+compile_with_grammar(grammar id, const char *source, slang_code_unit * unit,
+                     slang_unit_type type, slang_info_log * infolog,
+                     slang_code_unit * builtin,
+                     struct gl_shader *shader,
+                     const struct gl_extensions *extensions,
+                     struct gl_sl_pragmas *pragmas)
+{
+   byte *prod;
+   GLuint size, start, version;
+   slang_string preprocessed;
+   GLuint maxVersion;
+
+#if FEATURE_ARB_shading_language_120
+   maxVersion = 120;
+#elif FEATURE_es2_glsl
+   maxVersion = 100;
+#else
+   maxVersion = 110;
+#endif
+
+   /* First retrieve the version number. */
+   if (!_slang_preprocess_version(source, &version, &start, infolog))
+      return GL_FALSE;
+
+   if (version > maxVersion) {
+      slang_info_log_error(infolog,
+                           "language version %.2f is not supported.",
+                           version * 0.01);
+      return GL_FALSE;
+   }
+
+   /* Now preprocess the source string. */
+   slang_string_init(&preprocessed);
+   if (!_slang_preprocess_directives(&preprocessed, &source[start],
+                                     infolog, extensions, pragmas)) {
+      slang_string_free(&preprocessed);
+      slang_info_log_error(infolog, "failed to preprocess the source.");
+      return GL_FALSE;
+   }
+
+   /* Finally check the syntax and generate its binary representation. */
+   if (!grammar_fast_check(id,
+                           (const byte *) (slang_string_cstr(&preprocessed)),
+                           &prod, &size, 65536)) {
+      char buf[1024];
+      GLint pos;
+
+      slang_string_free(&preprocessed);
+      grammar_get_last_error((byte *) (buf), sizeof(buf), &pos);
+      slang_info_log_error(infolog, buf);
+      /* syntax error (possibly in library code) */
+#if 0
+      {
+         int line, col;
+         char *s;
+         s = (char *) _mesa_find_line_column((const GLubyte *) source,
+                                             (const GLubyte *) source + pos,
+                                             &line, &col);
+         printf("Error on line %d, col %d: %s\n", line, col, s);
+      }
+#endif
+      return GL_FALSE;
+   }
+   slang_string_free(&preprocessed);
+
+   /* Syntax is okay - translate it to internal representation. */
+   if (!compile_binary(prod, unit, version, type, infolog, builtin,
+                       &builtin[SLANG_BUILTIN_TOTAL - 1],
+                       shader)) {
+      grammar_alloc_free(prod);
+      return GL_FALSE;
+   }
+   grammar_alloc_free(prod);
+   return GL_TRUE;
+}
+
+LONGSTRING static const char *slang_shader_syn =
+#include "library/slang_shader_syn.h"
+   ;
+
+static const byte slang_core_gc[] = {
+#include "library/slang_core_gc.h"
+};
+
+static const byte slang_120_core_gc[] = {
+#include "library/slang_120_core_gc.h"
+};
+
+static const byte slang_120_fragment_gc[] = {
+#include "library/slang_builtin_120_fragment_gc.h"
+};
+
+static const byte slang_common_builtin_gc[] = {
+#include "library/slang_common_builtin_gc.h"
+};
+
+static const byte slang_fragment_builtin_gc[] = {
+#include "library/slang_fragment_builtin_gc.h"
+};
+
+static const byte slang_vertex_builtin_gc[] = {
+#include "library/slang_vertex_builtin_gc.h"
+};
+
+static GLboolean
+compile_object(grammar * id, const char *source, slang_code_object * object,
+               slang_unit_type type, slang_info_log * infolog,
+               struct gl_shader *shader,
+               const struct gl_extensions *extensions,
+               struct gl_sl_pragmas *pragmas)
+{
+   slang_code_unit *builtins = NULL;
+   GLuint base_version = 110;
+
+   /* load GLSL grammar */
+   *id = grammar_load_from_text((const byte *) (slang_shader_syn));
+   if (*id == 0) {
+      byte buf[1024];
+      int pos;
+
+      grammar_get_last_error(buf, 1024, &pos);
+      slang_info_log_error(infolog, (const char *) (buf));
+      return GL_FALSE;
+   }
+
+   /* set shader type - the syntax is slightly different for different shaders */
+   if (type == SLANG_UNIT_FRAGMENT_SHADER
+       || type == SLANG_UNIT_FRAGMENT_BUILTIN)
+      grammar_set_reg8(*id, (const byte *) "shader_type", 1);
+   else
+      grammar_set_reg8(*id, (const byte *) "shader_type", 2);
+
+   /* enable language extensions */
+   grammar_set_reg8(*id, (const byte *) "parsing_builtin", 1);
+
+   /* if parsing user-specified shader, load built-in library */
+   if (type == SLANG_UNIT_FRAGMENT_SHADER || type == SLANG_UNIT_VERTEX_SHADER) {
+      /* compile core functionality first */
+      if (!compile_binary(slang_core_gc,
+                          &object->builtin[SLANG_BUILTIN_CORE],
+                          base_version,
+                          SLANG_UNIT_FRAGMENT_BUILTIN, infolog,
+                          NULL, NULL, NULL))
+         return GL_FALSE;
+
+#if FEATURE_ARB_shading_language_120
+      if (!compile_binary(slang_120_core_gc,
+                          &object->builtin[SLANG_BUILTIN_120_CORE],
+                          120,
+                          SLANG_UNIT_FRAGMENT_BUILTIN, infolog,
+                          NULL, &object->builtin[SLANG_BUILTIN_CORE], NULL))
+         return GL_FALSE;
+#endif
+
+      /* compile common functions and variables, link to core */
+      if (!compile_binary(slang_common_builtin_gc,
+                          &object->builtin[SLANG_BUILTIN_COMMON],
+#if FEATURE_ARB_shading_language_120
+                          120,
+#else
+                          base_version,
+#endif
+                          SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
+#if FEATURE_ARB_shading_language_120
+                          &object->builtin[SLANG_BUILTIN_120_CORE],
+#else
+                          &object->builtin[SLANG_BUILTIN_CORE],
+#endif
+                          NULL))
+         return GL_FALSE;
+
+      /* compile target-specific functions and variables, link to common */
+      if (type == SLANG_UNIT_FRAGMENT_SHADER) {
+         if (!compile_binary(slang_fragment_builtin_gc,
+                             &object->builtin[SLANG_BUILTIN_TARGET],
+                             base_version,
+                             SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
+                             &object->builtin[SLANG_BUILTIN_COMMON], NULL))
+            return GL_FALSE;
+#if FEATURE_ARB_shading_language_120
+         if (!compile_binary(slang_120_fragment_gc,
+                             &object->builtin[SLANG_BUILTIN_TARGET],
+                             120,
+                             SLANG_UNIT_FRAGMENT_BUILTIN, infolog, NULL,
+                             &object->builtin[SLANG_BUILTIN_COMMON], NULL))
+            return GL_FALSE;
+#endif
+      }
+      else if (type == SLANG_UNIT_VERTEX_SHADER) {
+         if (!compile_binary(slang_vertex_builtin_gc,
+                             &object->builtin[SLANG_BUILTIN_TARGET],
+                             base_version,
+                             SLANG_UNIT_VERTEX_BUILTIN, infolog, NULL,
+                             &object->builtin[SLANG_BUILTIN_COMMON], NULL))
+            return GL_FALSE;
+      }
+
+      /* disable language extensions */
+#if NEW_SLANG /* allow-built-ins */
+      grammar_set_reg8(*id, (const byte *) "parsing_builtin", 1);
+#else
+      grammar_set_reg8(*id, (const byte *) "parsing_builtin", 0);
+#endif
+      builtins = object->builtin;
+   }
+
+   /* compile the actual shader - pass-in built-in library for external shader */
+   return compile_with_grammar(*id, source, &object->unit, type, infolog,
+                               builtins, shader, extensions, pragmas);
+}
+
+
+static GLboolean
+compile_shader(GLcontext *ctx, slang_code_object * object,
+               slang_unit_type type, slang_info_log * infolog,
+               struct gl_shader *shader)
+{
+   GLboolean success;
+   grammar id = 0;
+
+#if 0 /* for debug */
+   _mesa_printf("********* COMPILE SHADER ***********\n");
+   _mesa_printf("%s\n", shader->Source);
+   _mesa_printf("************************************\n");
+#endif
+
+   assert(shader->Program);
+
+   _slang_code_object_dtr(object);
+   _slang_code_object_ctr(object);
+
+   success = compile_object(&id, shader->Source, object, type, infolog, shader,
+                            &ctx->Extensions, &shader->Pragmas);
+   if (id != 0)
+      grammar_destroy(id);
+   if (!success)
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+
+
+GLboolean
+_slang_compile(GLcontext *ctx, struct gl_shader *shader)
+{
+   GLboolean success;
+   slang_info_log info_log;
+   slang_code_object obj;
+   slang_unit_type type;
+
+   if (shader->Type == GL_VERTEX_SHADER) {
+      type = SLANG_UNIT_VERTEX_SHADER;
+   }
+   else {
+      assert(shader->Type == GL_FRAGMENT_SHADER);
+      type = SLANG_UNIT_FRAGMENT_SHADER;
+   }
+
+   if (!shader->Source)
+      return GL_FALSE;
+
+   ctx->Shader.MemPool = _slang_new_mempool(1024*1024);
+
+   shader->Main = GL_FALSE;
+
+   if (!shader->Program) {
+      GLenum progTarget;
+      if (shader->Type == GL_VERTEX_SHADER)
+         progTarget = GL_VERTEX_PROGRAM_ARB;
+      else
+         progTarget = GL_FRAGMENT_PROGRAM_ARB;
+      shader->Program = ctx->Driver.NewProgram(ctx, progTarget, 1);
+      shader->Program->Parameters = _mesa_new_parameter_list();
+      shader->Program->Varying = _mesa_new_parameter_list();
+      shader->Program->Attributes = _mesa_new_parameter_list();
+   }
+
+   slang_info_log_construct(&info_log);
+   _slang_code_object_ctr(&obj);
+
+   success = compile_shader(ctx, &obj, type, &info_log, shader);
+
+   /* free shader's prev info log */
+   if (shader->InfoLog) {
+      _mesa_free(shader->InfoLog);
+      shader->InfoLog = NULL;
+   }
+
+   if (info_log.text) {
+      /* copy info-log string to shader object */
+      shader->InfoLog = _mesa_strdup(info_log.text);
+   }
+
+   if (info_log.error_flag) {
+      success = GL_FALSE;
+   }
+
+   slang_info_log_destruct(&info_log);
+   _slang_code_object_dtr(&obj);
+
+   _slang_delete_mempool((slang_mempool *) ctx->Shader.MemPool);
+   ctx->Shader.MemPool = NULL;
+
+   /* remove any reads of output registers */
+#if 0
+   printf("Pre-remove output reads:\n");
+   _mesa_print_program(shader->Program);
+#endif
+   _mesa_remove_output_reads(shader->Program, PROGRAM_OUTPUT);
+   if (shader->Type == GL_VERTEX_SHADER) {
+      /* and remove writes to varying vars in vertex programs */
+      _mesa_remove_output_reads(shader->Program, PROGRAM_VARYING);
+   }
+#if 0
+   printf("Post-remove output reads:\n");
+   _mesa_print_program(shader->Program);
+#endif
+
+   shader->CompileStatus = success;
+
+   if (success) {
+      if (shader->Pragmas.Optimize &&
+          (ctx->Shader.Flags & GLSL_NO_OPT) == 0) {
+         _mesa_optimize_program(ctx, shader->Program);
+      }
+   }
+
+   if (ctx->Shader.Flags & GLSL_LOG) {
+      _mesa_write_shader_to_file(shader);
+   }
+
+   return success;
+}
+
diff --git a/mesalib/src/mesa/shader/slang/slang_compile.h b/mesalib/src/mesa/shader/slang/slang_compile.h
new file mode 100644
index 000000000..7fb549d33
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile.h
@@ -0,0 +1,100 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#if !defined SLANG_COMPILE_H
+#define SLANG_COMPILE_H
+
+#include "main/imports.h"
+#include "main/mtypes.h"
+#include "slang_typeinfo.h"
+#include "slang_compile_variable.h"
+#include "slang_compile_struct.h"
+#include "slang_compile_operation.h"
+#include "slang_compile_function.h"
+
+#if defined __cplusplus
+extern "C" {
+#endif
+
+typedef struct slang_name_space_
+{
+   struct slang_function_scope_ *funcs;
+   struct slang_struct_scope_ *structs;
+   struct slang_variable_scope_ *vars;
+} slang_name_space;
+
+typedef enum slang_unit_type_
+{
+   SLANG_UNIT_FRAGMENT_SHADER,
+   SLANG_UNIT_VERTEX_SHADER,
+   SLANG_UNIT_FRAGMENT_BUILTIN,
+   SLANG_UNIT_VERTEX_BUILTIN
+} slang_unit_type;
+
+
+typedef struct slang_code_unit_
+{
+   slang_variable_scope vars;
+   slang_function_scope funs;
+   slang_struct_scope structs;
+   slang_unit_type type;
+   struct slang_code_object_ *object;
+} slang_code_unit;
+
+
+extern GLvoid
+_slang_code_unit_ctr (slang_code_unit *, struct slang_code_object_ *);
+
+extern GLvoid
+_slang_code_unit_dtr (slang_code_unit *);
+
+#define SLANG_BUILTIN_CORE   0
+#define SLANG_BUILTIN_120_CORE   1
+#define SLANG_BUILTIN_COMMON 2
+#define SLANG_BUILTIN_TARGET 3
+
+#define SLANG_BUILTIN_TOTAL  4
+
+typedef struct slang_code_object_
+{
+   slang_code_unit builtin[SLANG_BUILTIN_TOTAL];
+   slang_code_unit unit;
+   slang_atom_pool atompool;
+} slang_code_object;
+
+extern GLvoid
+_slang_code_object_ctr (slang_code_object *);
+
+extern GLvoid
+_slang_code_object_dtr (slang_code_object *);
+
+extern GLboolean
+_slang_compile (GLcontext *ctx, struct gl_shader *shader);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/mesalib/src/mesa/shader/slang/slang_compile_function.c b/mesalib/src/mesa/shader/slang/slang_compile_function.c
new file mode 100644
index 000000000..4dd885176
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_function.c
@@ -0,0 +1,262 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_compile_function.c
+ * slang front-end compiler
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "slang_compile.h"
+#include "slang_mem.h"
+
+
+int
+slang_function_construct(slang_function * func)
+{
+   func->kind = SLANG_FUNC_ORDINARY;
+   if (!slang_variable_construct(&func->header))
+      return 0;
+
+   func->parameters = (slang_variable_scope *)
+      _slang_alloc(sizeof(slang_variable_scope));
+   if (func->parameters == NULL) {
+      slang_variable_destruct(&func->header);
+      return 0;
+   }
+
+   _slang_variable_scope_ctr(func->parameters);
+   func->param_count = 0;
+   func->body = NULL;
+   return 1;
+}
+
+void
+slang_function_destruct(slang_function * func)
+{
+   slang_variable_destruct(&func->header);
+   slang_variable_scope_destruct(func->parameters);
+   _slang_free(func->parameters);
+   if (func->body != NULL) {
+      slang_operation_destruct(func->body);
+      _slang_free(func->body);
+   }
+}
+
+
+slang_function *
+slang_function_new(slang_function_kind kind)
+{
+   slang_function *fun = (slang_function *)
+      _slang_alloc(sizeof(slang_function));
+   if (fun) {
+      slang_function_construct(fun);
+      fun->kind = kind;
+   }
+   return fun;
+}
+
+
+/*
+ * slang_function_scope
+ */
+
+GLvoid
+_slang_function_scope_ctr(slang_function_scope * self)
+{
+   self->functions = NULL;
+   self->num_functions = 0;
+   self->outer_scope = NULL;
+}
+
+void
+slang_function_scope_destruct(slang_function_scope * scope)
+{
+   unsigned int i;
+
+   for (i = 0; i < scope->num_functions; i++)
+      slang_function_destruct(scope->functions + i);
+   _slang_free(scope->functions);
+}
+
+
+/**
+ * Does this function have a non-void return value?
+ */
+GLboolean
+_slang_function_has_return_value(const slang_function *fun)
+{
+   return fun->header.type.specifier.type != SLANG_SPEC_VOID;
+}
+
+
+/**
+ * Search a list of functions for a particular function by name.
+ * \param funcs  the list of functions to search
+ * \param a_name  the name to search for
+ * \param all_scopes  if non-zero, search containing scopes too.
+ * \return pointer to found function, or NULL.
+ */
+int
+slang_function_scope_find_by_name(slang_function_scope * funcs,
+                                  slang_atom a_name, int all_scopes)
+{
+   unsigned int i;
+
+   for (i = 0; i < funcs->num_functions; i++)
+      if (a_name == funcs->functions[i].header.a_name)
+         return 1;
+   if (all_scopes && funcs->outer_scope != NULL)
+      return slang_function_scope_find_by_name(funcs->outer_scope, a_name, 1);
+   return 0;
+}
+
+
+/**
+ * Search a list of functions for a particular function (for implementing
+ * function calls.  Matching is done by first comparing the function's name,
+ * then the function's parameter list.
+ *
+ * \param funcs  the list of functions to search
+ * \param fun  the function to search for
+ * \param all_scopes  if non-zero, search containing scopes too.
+ * \return pointer to found function, or NULL.
+ */
+slang_function *
+slang_function_scope_find(slang_function_scope * funcs, slang_function * fun,
+                          int all_scopes)
+{
+   unsigned int i;
+
+   for (i = 0; i < funcs->num_functions; i++) {
+      slang_function *f = &funcs->functions[i];
+      const GLuint haveRetValue = 0;
+#if 0
+         = (f->header.type.specifier.type != SLANG_SPEC_VOID);
+#endif
+      unsigned int j;
+
+      /*
+      printf("Compare name %s to %s  (ret %u, %d, %d)\n",
+             (char *) fun->header.a_name, (char *) f->header.a_name,
+             haveRetValue,
+             fun->param_count, f->param_count);
+      */
+
+      if (fun->header.a_name != f->header.a_name)
+         continue;
+      if (fun->param_count != f->param_count)
+         continue;
+      for (j = haveRetValue; j < fun->param_count; j++) {
+         if (!slang_type_specifier_equal
+             (&fun->parameters->variables[j]->type.specifier,
+              &f->parameters->variables[j]->type.specifier))
+            break;
+      }
+      if (j == fun->param_count) {
+         /*
+         printf("Found match\n");
+         */
+         return f;
+      }
+   }
+   /*
+   printf("Not found\n");
+   */
+   if (all_scopes && funcs->outer_scope != NULL)
+      return slang_function_scope_find(funcs->outer_scope, fun, 1);
+   return NULL;
+}
+
+
+/**
+ * Lookup a function according to name and parameter count/types.
+ */
+slang_function *
+_slang_function_locate(const slang_function_scope * funcs, slang_atom a_name,
+                       slang_operation * args, GLuint num_args,
+                       const slang_name_space * space, slang_atom_pool * atoms,
+                       slang_info_log *log, GLboolean *error)
+{
+   slang_typeinfo arg_ti[100];
+   GLuint i;
+
+   *error = GL_FALSE;
+
+   /* determine type of each argument */
+   assert(num_args < 100);
+   for (i = 0; i < num_args; i++) {
+      if (!slang_typeinfo_construct(&arg_ti[i]))
+         return NULL;
+      if (!_slang_typeof_operation(&args[i], space, &arg_ti[i], atoms, log)) {
+         return NULL;
+      }
+   }
+
+   /* loop over function scopes */
+   while (funcs) {
+
+      /* look for function with matching name and argument/param types */
+      for (i = 0; i < funcs->num_functions; i++) {
+         slang_function *f = &funcs->functions[i];
+         const GLuint haveRetValue = _slang_function_has_return_value(f);
+         GLuint j;
+
+         if (a_name != f->header.a_name)
+            continue;
+         if (f->param_count - haveRetValue != num_args)
+            continue;
+
+         /* compare parameter / argument types */
+         for (j = 0; j < num_args; j++) {
+            if (!slang_type_specifier_compatible(&arg_ti[j].spec,
+                              &f->parameters->variables[j]->type.specifier)) {
+               /* param/arg types don't match */
+               break;
+            }
+
+            /* "out" and "inout" formal parameter requires the actual
+             * argument to be an l-value.
+             */
+            if (!arg_ti[j].can_be_referenced &&
+                (f->parameters->variables[j]->type.qualifier == SLANG_QUAL_OUT ||
+                 f->parameters->variables[j]->type.qualifier == SLANG_QUAL_INOUT)) {
+               /* param is not an lvalue! */
+               *error = GL_TRUE;
+               return NULL;
+            }
+         }
+
+         if (j == num_args) {
+            /* name and args match! */
+            return f;
+         }
+      }
+
+      funcs = funcs->outer_scope;
+   }
+
+   return NULL;
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_compile_function.h b/mesalib/src/mesa/shader/slang/slang_compile_function.h
new file mode 100644
index 000000000..a5445ec25
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_function.h
@@ -0,0 +1,92 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.2
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_COMPILE_FUNCTION_H
+#define SLANG_COMPILE_FUNCTION_H
+
+
+/**
+ * Types of functions.
+ */
+typedef enum slang_function_kind_
+{
+   SLANG_FUNC_ORDINARY,
+   SLANG_FUNC_CONSTRUCTOR,
+   SLANG_FUNC_OPERATOR
+} slang_function_kind;
+
+
+/**
+ * Description of a compiled shader function.
+ */
+typedef struct slang_function_
+{
+   slang_function_kind kind;
+   slang_variable header;      /**< The function's name and return type */
+   slang_variable_scope *parameters; /**< formal parameters AND local vars */
+   unsigned int param_count;   /**< number of formal params (no locals) */
+   slang_operation *body;      /**< The instruction tree */
+} slang_function;
+
+extern int slang_function_construct(slang_function *);
+extern void slang_function_destruct(slang_function *);
+extern slang_function *slang_function_new(slang_function_kind kind);
+
+extern GLboolean
+_slang_function_has_return_value(const slang_function *fun);
+
+
+/**
+ * Basically, a list of compiled functions.
+ */
+typedef struct slang_function_scope_
+{
+   slang_function *functions;
+   GLuint num_functions;
+   struct slang_function_scope_ *outer_scope;
+} slang_function_scope;
+
+
+extern GLvoid
+_slang_function_scope_ctr(slang_function_scope *);
+
+extern void
+slang_function_scope_destruct(slang_function_scope *);
+
+extern int
+slang_function_scope_find_by_name(slang_function_scope *, slang_atom, int);
+
+extern slang_function *
+slang_function_scope_find(slang_function_scope *, slang_function *, int);
+
+extern struct slang_function_ *
+_slang_function_locate(const struct slang_function_scope_ *funcs,
+                       slang_atom name, struct slang_operation_ *params,
+                       GLuint num_params,
+                       const struct slang_name_space_ *space,
+                       slang_atom_pool *atoms, slang_info_log *log,
+                       GLboolean *error);
+
+
+#endif /* SLANG_COMPILE_FUNCTION_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_compile_operation.c b/mesalib/src/mesa/shader/slang/slang_compile_operation.c
new file mode 100644
index 000000000..3e2bdbc91
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_operation.c
@@ -0,0 +1,332 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.2
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_compile_operation.c
+ * slang front-end compiler
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "slang_compile.h"
+#include "slang_mem.h"
+
+
+/**
+ * Init a slang_operation object
+ */
+GLboolean
+slang_operation_construct(slang_operation * oper)
+{
+   oper->type = SLANG_OPER_NONE;
+   oper->children = NULL;
+   oper->num_children = 0;
+   oper->literal[0] = 0.0;
+   oper->literal_size = 1;
+   oper->array_constructor = GL_FALSE;
+   oper->a_id = SLANG_ATOM_NULL;
+   oper->locals = _slang_variable_scope_new(NULL);
+   if (oper->locals == NULL)
+      return GL_FALSE;
+   _slang_variable_scope_ctr(oper->locals);
+   oper->fun = NULL;
+   oper->var = NULL;
+   return GL_TRUE;
+}
+
+void
+slang_operation_destruct(slang_operation * oper)
+{
+   GLuint i;
+
+   for (i = 0; i < oper->num_children; i++)
+      slang_operation_destruct(oper->children + i);
+   _slang_free(oper->children);
+   slang_variable_scope_destruct(oper->locals);
+   _slang_free(oper->locals);
+   oper->children = NULL;
+   oper->num_children = 0;
+   oper->locals = NULL;
+}
+
+
+/**
+ * Recursively traverse 'oper', replacing occurances of 'oldScope' with
+ * 'newScope' in the oper->locals->outer_scope field.
+ */
+void
+slang_replace_scope(slang_operation *oper,
+                    slang_variable_scope *oldScope,
+                    slang_variable_scope *newScope)
+{
+   GLuint i;
+
+   if (oper->locals != newScope &&
+       oper->locals->outer_scope == oldScope) {
+      /* found.  replace old w/ new */
+      oper->locals->outer_scope = newScope;
+   }
+
+   if (oper->type == SLANG_OPER_VARIABLE_DECL) {
+      /* search/replace in the initializer */
+      slang_variable *var;
+      var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE);
+      if (var && var->initializer) {
+         slang_replace_scope(var->initializer, oldScope, newScope);
+      }
+   }
+
+   /* search/replace in children */
+   for (i = 0; i < oper->num_children; i++) {
+      slang_replace_scope(&oper->children[i], oldScope, newScope);
+   }
+}
+
+
+/**
+ * Recursively copy a slang_operation node.
+ * \param x  copy target
+ * \param y  copy source
+ * \return GL_TRUE for success, GL_FALSE if failure
+ */
+GLboolean
+slang_operation_copy(slang_operation * x, const slang_operation * y)
+{
+   slang_operation z;
+   GLuint i;
+
+   if (!slang_operation_construct(&z))
+      return GL_FALSE;
+   z.type = y->type;
+   if (y->num_children > 0) {
+      z.children = (slang_operation *)
+         _slang_alloc(y->num_children * sizeof(slang_operation));
+      if (z.children == NULL) {
+         slang_operation_destruct(&z);
+         return GL_FALSE;
+      }
+   }
+   for (z.num_children = 0; z.num_children < y->num_children;
+        z.num_children++) {
+      if (!slang_operation_construct(&z.children[z.num_children])) {
+         slang_operation_destruct(&z);
+         return GL_FALSE;
+      }
+   }
+   for (i = 0; i < z.num_children; i++) {
+      if (!slang_operation_copy(&z.children[i], &y->children[i])) {
+         slang_operation_destruct(&z);
+         return GL_FALSE;
+      }
+   }
+   z.literal[0] = y->literal[0];
+   z.literal[1] = y->literal[1];
+   z.literal[2] = y->literal[2];
+   z.literal[3] = y->literal[3];
+   z.literal_size = y->literal_size;
+   assert(y->literal_size >= 1);
+   assert(y->literal_size <= 4);
+   z.a_id = y->a_id;
+   if (y->locals) {
+      if (!slang_variable_scope_copy(z.locals, y->locals)) {
+         slang_operation_destruct(&z);
+         return GL_FALSE;
+      }
+   }
+
+   /* update scoping for children */
+   for (i = 0; i < y->num_children; i++) {
+      if (y->children[i].locals &&
+          y->children[i].locals->outer_scope == y->locals) {
+         z.children[i].locals->outer_scope = z.locals;
+      }
+   }
+
+#if 0
+   z.var = y->var;
+   z.fun = y->fun;
+#endif
+   slang_operation_destruct(x);
+   *x = z;
+
+   /* If this operation declares a new scope, we need to make sure
+    * all children point to it, not the original operation's scope!
+    */
+   if (x->type == SLANG_OPER_BLOCK_NEW_SCOPE ||
+       x->type == SLANG_OPER_WHILE ||
+       x->type == SLANG_OPER_FOR) {
+      slang_replace_scope(x, y->locals, x->locals);
+   }
+
+   return GL_TRUE;
+}
+
+
+slang_operation *
+slang_operation_new(GLuint count)
+{
+   slang_operation *ops
+       = (slang_operation *) _slang_alloc(count * sizeof(slang_operation));
+   assert(count > 0);
+   if (ops) {
+      GLuint i;
+      for (i = 0; i < count; i++)
+         slang_operation_construct(ops + i);
+   }
+   return ops;
+}
+
+
+/**
+ * Delete operation and all children
+ */
+void
+slang_operation_delete(slang_operation *oper)
+{
+   slang_operation_destruct(oper);
+   _slang_free(oper);
+}
+
+
+void
+slang_operation_free_children(slang_operation *oper)
+{
+   GLuint i;
+   for (i = 0; i < slang_oper_num_children(oper); i++) {
+      slang_operation *child = slang_oper_child(oper, i);
+      slang_operation_destruct(child);
+   }
+   _slang_free(oper->children);
+   oper->children = NULL;
+   oper->num_children = 0;
+}
+
+
+slang_operation *
+slang_operation_grow(GLuint *numChildren, slang_operation **children)
+{
+   slang_operation *ops;
+
+   ops = (slang_operation *)
+      _slang_realloc(*children,
+                     *numChildren * sizeof(slang_operation),
+                     (*numChildren + 1) * sizeof(slang_operation));
+   if (ops) {
+      slang_operation *newOp = ops + *numChildren;
+      if (!slang_operation_construct(newOp)) {
+         _slang_free(ops);
+         *children = NULL;
+         return NULL;
+      }
+      *children = ops;
+      (*numChildren)++;
+      return newOp;
+   }
+   return NULL;
+}
+
+/**
+ * Insert a new slang_operation into an array.
+ * \param numElements  pointer to current array size (in/out)
+ * \param array  address of the array (in/out)
+ * \param pos  position to insert new element
+ * \return  pointer to the new operation/element
+ */
+slang_operation *
+slang_operation_insert(GLuint *numElements, slang_operation **array,
+                       GLuint pos)
+{
+   slang_operation *ops;
+
+   assert(pos <= *numElements);
+
+   ops = (slang_operation *)
+      _slang_alloc((*numElements + 1) * sizeof(slang_operation));
+   if (ops) {
+      slang_operation *newOp;
+      newOp = ops + pos;
+      if (pos > 0)
+         _mesa_memcpy(ops, *array, pos * sizeof(slang_operation));
+      if (pos < *numElements)
+         _mesa_memcpy(newOp + 1, (*array) + pos,
+                      (*numElements - pos) * sizeof(slang_operation));
+
+      if (!slang_operation_construct(newOp)) {
+         _slang_free(ops);
+         *numElements = 0;
+         *array = NULL;
+         return NULL;
+      }
+      if (*array)
+         _slang_free(*array);
+      *array = ops;
+      (*numElements)++;
+      return newOp;
+   }
+   return NULL;
+}
+
+
+/**
+ * Add/insert new child into given node at given position.
+ * \return pointer to the new child node
+ */
+slang_operation *
+slang_operation_insert_child(slang_operation *oper, GLuint pos)
+{
+   slang_operation *newOp;
+
+   newOp = slang_operation_insert(&oper->num_children,
+                                  &oper->children,
+                                  pos);
+   if (newOp) {
+      newOp->locals->outer_scope = oper->locals;
+   }
+
+   return newOp;
+}
+
+
+void
+_slang_operation_swap(slang_operation *oper0, slang_operation *oper1)
+{
+   slang_operation tmp = *oper0;
+   *oper0 = *oper1;
+   *oper1 = tmp;
+}
+
+
+void
+slang_operation_add_children(slang_operation *oper, GLuint num_children)
+{
+   GLuint i;
+   assert(oper->num_children == 0);
+   assert(oper->children == NULL);
+   oper->num_children = num_children;
+   oper->children = slang_operation_new(num_children);
+   for (i = 0; i < num_children; i++) {
+      oper->children[i].locals = _slang_variable_scope_new(oper->locals);
+   }
+}
+
diff --git a/mesalib/src/mesa/shader/slang/slang_compile_operation.h b/mesalib/src/mesa/shader/slang/slang_compile_operation.h
new file mode 100644
index 000000000..58f1edeed
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_operation.h
@@ -0,0 +1,226 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.2
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_COMPILE_OPERATION_H
+#define SLANG_COMPILE_OPERATION_H
+
+
+/**
+ * Types of slang operations.
+ * These are the types of the AST (abstract syntax tree) nodes.
+ * [foo] indicates a sub-tree or reference to another type of node
+ */
+typedef enum slang_operation_type_
+{
+   SLANG_OPER_NONE,
+   SLANG_OPER_BLOCK_NO_NEW_SCOPE,       /* "{" sequence "}" */
+   SLANG_OPER_BLOCK_NEW_SCOPE,  /* "{" sequence "}" */
+   SLANG_OPER_VARIABLE_DECL,    /* [type] [var] or [var] = [expr] */
+   SLANG_OPER_ASM,
+   SLANG_OPER_BREAK,            /* "break" statement */
+   SLANG_OPER_CONTINUE,         /* "continue" statement */
+   SLANG_OPER_DISCARD,          /* "discard" (kill fragment) statement */
+   SLANG_OPER_RETURN,           /* "return" [expr]  */
+   SLANG_OPER_RETURN_INLINED,   /* "return" [expr] from inlined function  */
+   SLANG_OPER_LABEL,            /* a jump target */
+   SLANG_OPER_EXPRESSION,       /* [expr] */
+   SLANG_OPER_IF,               /* "if" [0] then [1] else [2] */
+   SLANG_OPER_WHILE,            /* "while" [cond] [body] */
+   SLANG_OPER_DO,               /* "do" [body] "while" [cond] */
+   SLANG_OPER_FOR,              /* "for" [init] [while] [incr] [body] */
+   SLANG_OPER_VOID,             /* nop */
+   SLANG_OPER_LITERAL_BOOL,     /* "true" or "false" */
+   SLANG_OPER_LITERAL_INT,      /* integer literal */
+   SLANG_OPER_LITERAL_FLOAT,    /* float literal */
+   SLANG_OPER_IDENTIFIER,       /* var name, func name, etc */
+   SLANG_OPER_SEQUENCE,         /* [expr] "," [expr] "," etc */
+   SLANG_OPER_ASSIGN,           /* [var] "=" [expr] */
+   SLANG_OPER_ADDASSIGN,        /* [var] "+=" [expr] */
+   SLANG_OPER_SUBASSIGN,        /* [var] "-=" [expr] */
+   SLANG_OPER_MULASSIGN,        /* [var] "*=" [expr] */
+   SLANG_OPER_DIVASSIGN,        /* [var] "/=" [expr] */
+   /*SLANG_OPER_MODASSIGN, */
+   /*SLANG_OPER_LSHASSIGN, */
+   /*SLANG_OPER_RSHASSIGN, */
+   /*SLANG_OPER_ORASSIGN, */
+   /*SLANG_OPER_XORASSIGN, */
+   /*SLANG_OPER_ANDASSIGN, */
+   SLANG_OPER_SELECT,           /* [expr] "?" [expr] ":" [expr] */
+   SLANG_OPER_LOGICALOR,        /* [expr] "||" [expr] */
+   SLANG_OPER_LOGICALXOR,       /* [expr] "^^" [expr] */
+   SLANG_OPER_LOGICALAND,       /* [expr] "&&" [expr] */
+   /*SLANG_OPER_BITOR, */
+   /*SLANG_OPER_BITXOR, */
+   /*SLANG_OPER_BITAND, */
+   SLANG_OPER_EQUAL,            /* [expr] "==" [expr] */
+   SLANG_OPER_NOTEQUAL,         /* [expr] "!=" [expr] */
+   SLANG_OPER_LESS,             /* [expr] "<" [expr] */
+   SLANG_OPER_GREATER,          /* [expr] ">" [expr] */
+   SLANG_OPER_LESSEQUAL,        /* [expr] "<=" [expr] */
+   SLANG_OPER_GREATEREQUAL,     /* [expr] ">=" [expr] */
+   /*SLANG_OPER_LSHIFT, */
+   /*SLANG_OPER_RSHIFT, */
+   SLANG_OPER_ADD,              /* [expr] "+" [expr] */
+   SLANG_OPER_SUBTRACT,         /* [expr] "-" [expr] */
+   SLANG_OPER_MULTIPLY,         /* [expr] "*" [expr] */
+   SLANG_OPER_DIVIDE,           /* [expr] "/" [expr] */
+   /*SLANG_OPER_MODULUS, */
+   SLANG_OPER_PREINCREMENT,     /* "++" [var] */
+   SLANG_OPER_PREDECREMENT,     /* "--" [var] */
+   SLANG_OPER_PLUS,             /* "-" [expr] */
+   SLANG_OPER_MINUS,            /* "+" [expr] */
+   /*SLANG_OPER_COMPLEMENT, */
+   SLANG_OPER_NOT,              /* "!" [expr] */
+   SLANG_OPER_SUBSCRIPT,        /* [expr] "[" [expr] "]" */
+   SLANG_OPER_CALL,             /* [func name] [param] [param] [...] */
+   SLANG_OPER_NON_INLINED_CALL, /* a real function call */
+   SLANG_OPER_METHOD,           /* method call, such as  v.length() */
+   SLANG_OPER_FIELD,            /* i.e.: ".next" or ".xzy" or ".xxx" etc */
+   SLANG_OPER_POSTINCREMENT,    /* [var] "++" */
+   SLANG_OPER_POSTDECREMENT     /* [var] "--" */
+} slang_operation_type;
+
+
+/**
+ * A slang_operation is basically a compiled instruction (such as assignment,
+ * a while-loop, a conditional, a multiply, a function call, etc).
+ * The AST (abstract syntax tree) is built from these nodes.
+ * NOTE: This structure could have been implemented as a union of simpler
+ * structs which would correspond to the operation types above.
+ */
+typedef struct slang_operation_
+{
+   slang_operation_type type;
+   struct slang_operation_ *children;
+   GLuint num_children;
+   GLfloat literal[4];           /**< Used for float, int and bool values */
+   GLuint literal_size;          /**< 1, 2, 3, or 4 */
+   slang_atom a_id;              /**< type: asm, identifier, call, field */
+   slang_atom a_obj;             /**< object in a method call */
+   slang_variable_scope *locals; /**< local vars for scope */
+   struct slang_function_ *fun;  /**< If type == SLANG_OPER_CALL */
+   struct slang_variable_ *var;  /**< If type == slang_oper_identier */
+   struct slang_label_ *label;   /**< If type == SLANG_OPER_LABEL */
+   /** If type==SLANG_OPER_CALL and we're calling an array constructor,
+    * for which there's no real function, we need to have a flag to
+    * indicate such.  num_children indicates number of elements.
+    */
+   GLboolean array_constructor;
+   double x;
+} slang_operation;
+
+
+extern GLboolean
+slang_operation_construct(slang_operation *);
+
+extern void
+slang_operation_destruct(slang_operation *);
+
+extern void
+slang_replace_scope(slang_operation *oper,
+                    slang_variable_scope *oldScope,
+                    slang_variable_scope *newScope);
+
+extern GLboolean
+slang_operation_copy(slang_operation *, const slang_operation *);
+
+extern slang_operation *
+slang_operation_new(GLuint count);
+
+extern void
+slang_operation_delete(slang_operation *oper);
+
+extern void
+slang_operation_free_children(slang_operation *oper);
+
+extern slang_operation *
+slang_operation_grow(GLuint *numChildren, slang_operation **children);
+
+extern slang_operation *
+slang_operation_insert(GLuint *numChildren, slang_operation **children,
+                       GLuint pos);
+
+extern slang_operation *
+slang_operation_insert_child(slang_operation *oper, GLuint pos);
+
+extern void
+_slang_operation_swap(slang_operation *oper0, slang_operation *oper1);
+
+
+extern void
+slang_operation_add_children(slang_operation *oper, GLuint num_children);
+
+
+/** Return number of children of given node */
+static INLINE GLuint
+slang_oper_num_children(const slang_operation *oper)
+{
+   return oper->num_children;
+}
+
+/** Return child of given operation node */
+static INLINE slang_operation *
+slang_oper_child(slang_operation *oper, GLuint child)
+{
+   assert(child < oper->num_children);
+   return &oper->children[child];
+}
+
+
+/** Return child of given operation node, const version */
+static INLINE const slang_operation *
+slang_oper_child_const(const slang_operation *oper, GLuint child)
+{
+   assert(child < oper->num_children);
+   return &oper->children[child];
+}
+
+
+/** Init oper to a boolean literal. */
+static INLINE void
+slang_operation_literal_bool(slang_operation *oper, GLboolean value)
+{
+   oper->type = SLANG_OPER_LITERAL_BOOL;
+   oper->literal[0] =
+   oper->literal[1] =
+   oper->literal[2] =
+   oper->literal[3] = (float) value;
+   oper->literal_size = 1;
+}
+
+
+/** Init oper to an int literal. */
+static INLINE void
+slang_operation_literal_int(slang_operation *oper, GLint value)
+{
+   oper->type = SLANG_OPER_LITERAL_INT;
+   oper->literal[0] =
+   oper->literal[1] =
+   oper->literal[2] =
+   oper->literal[3] = (float) value;
+   oper->literal_size = 1;
+}
+
+
+#endif /* SLANG_COMPILE_OPERATION_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_compile_struct.c b/mesalib/src/mesa/shader/slang/slang_compile_struct.c
new file mode 100644
index 000000000..e6c38730d
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_struct.c
@@ -0,0 +1,174 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_compile_struct.c
+ * slang front-end compiler
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "slang_mem.h"
+#include "slang_compile.h"
+
+
+GLvoid
+_slang_struct_scope_ctr(slang_struct_scope * self)
+{
+   self->structs = NULL;
+   self->num_structs = 0;
+   self->outer_scope = NULL;
+}
+
+void
+slang_struct_scope_destruct(slang_struct_scope * scope)
+{
+   GLuint i;
+
+   for (i = 0; i < scope->num_structs; i++)
+      slang_struct_destruct(scope->structs + i);
+   _slang_free(scope->structs);
+   /* do not free scope->outer_scope */
+}
+
+int
+slang_struct_scope_copy(slang_struct_scope * x, const slang_struct_scope * y)
+{
+   slang_struct_scope z;
+   GLuint i;
+
+   _slang_struct_scope_ctr(&z);
+   z.structs = (slang_struct *)
+      _slang_alloc(y->num_structs * sizeof(slang_struct));
+   if (z.structs == NULL) {
+      slang_struct_scope_destruct(&z);
+      return 0;
+   }
+   for (z.num_structs = 0; z.num_structs < y->num_structs; z.num_structs++)
+      if (!slang_struct_construct(&z.structs[z.num_structs])) {
+         slang_struct_scope_destruct(&z);
+         return 0;
+      }
+   for (i = 0; i < z.num_structs; i++)
+      if (!slang_struct_copy(&z.structs[i], &y->structs[i])) {
+         slang_struct_scope_destruct(&z);
+         return 0;
+      }
+   z.outer_scope = y->outer_scope;
+   slang_struct_scope_destruct(x);
+   *x = z;
+   return 1;
+}
+
+slang_struct *
+slang_struct_scope_find(slang_struct_scope * stru, slang_atom a_name,
+                        int all_scopes)
+{
+   GLuint i;
+
+   for (i = 0; i < stru->num_structs; i++)
+      if (a_name == stru->structs[i].a_name)
+         return &stru->structs[i];
+   if (all_scopes && stru->outer_scope != NULL)
+      return slang_struct_scope_find(stru->outer_scope, a_name, 1);
+   return NULL;
+}
+
+/* slang_struct */
+
+int
+slang_struct_construct(slang_struct * stru)
+{
+   stru->a_name = SLANG_ATOM_NULL;
+   stru->fields = (slang_variable_scope *)
+      _slang_alloc(sizeof(slang_variable_scope));
+   if (stru->fields == NULL)
+      return 0;
+   _slang_variable_scope_ctr(stru->fields);
+
+   stru->structs =
+      (slang_struct_scope *) _slang_alloc(sizeof(slang_struct_scope));
+   if (stru->structs == NULL) {
+      slang_variable_scope_destruct(stru->fields);
+      _slang_free(stru->fields);
+      return 0;
+   }
+   _slang_struct_scope_ctr(stru->structs);
+   stru->constructor = NULL;
+   return 1;
+}
+
+void
+slang_struct_destruct(slang_struct * stru)
+{
+   slang_variable_scope_destruct(stru->fields);
+   _slang_free(stru->fields);
+   slang_struct_scope_destruct(stru->structs);
+   _slang_free(stru->structs);
+}
+
+int
+slang_struct_copy(slang_struct * x, const slang_struct * y)
+{
+   slang_struct z;
+
+   if (!slang_struct_construct(&z))
+      return 0;
+   z.a_name = y->a_name;
+   if (!slang_variable_scope_copy(z.fields, y->fields)) {
+      slang_struct_destruct(&z);
+      return 0;
+   }
+   if (!slang_struct_scope_copy(z.structs, y->structs)) {
+      slang_struct_destruct(&z);
+      return 0;
+   }
+   slang_struct_destruct(x);
+   *x = z;
+   return 1;
+}
+
+int
+slang_struct_equal(const slang_struct * x, const slang_struct * y)
+{
+   GLuint i;
+
+   if (x->fields->num_variables != y->fields->num_variables)
+      return 0;
+
+   for (i = 0; i < x->fields->num_variables; i++) {
+      const slang_variable *varx = x->fields->variables[i];
+      const slang_variable *vary = y->fields->variables[i];
+
+      if (varx->a_name != vary->a_name)
+         return 0;
+      if (!slang_type_specifier_equal(&varx->type.specifier,
+                                      &vary->type.specifier))
+         return 0;
+      if (varx->type.specifier.type == SLANG_SPEC_ARRAY)
+         if (varx->array_len != vary->array_len)
+            return GL_FALSE;
+   }
+   return 1;
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_compile_struct.h b/mesalib/src/mesa/shader/slang/slang_compile_struct.h
new file mode 100644
index 000000000..90c5512f4
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_struct.h
@@ -0,0 +1,66 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#if !defined SLANG_COMPILE_STRUCT_H
+#define SLANG_COMPILE_STRUCT_H
+
+#if defined __cplusplus
+extern "C" {
+#endif
+
+struct slang_function_;
+
+typedef struct slang_struct_scope_
+{
+   struct slang_struct_ *structs;
+   GLuint num_structs;
+   struct slang_struct_scope_ *outer_scope;
+} slang_struct_scope;
+
+extern GLvoid
+_slang_struct_scope_ctr (slang_struct_scope *);
+
+void slang_struct_scope_destruct (slang_struct_scope *);
+int slang_struct_scope_copy (slang_struct_scope *, const slang_struct_scope *);
+struct slang_struct_ *slang_struct_scope_find (slang_struct_scope *, slang_atom, int);
+
+typedef struct slang_struct_
+{
+   slang_atom a_name;
+   struct slang_variable_scope_ *fields;
+   slang_struct_scope *structs;
+   struct slang_function_ *constructor;
+} slang_struct;
+
+int slang_struct_construct (slang_struct *);
+void slang_struct_destruct (slang_struct *);
+int slang_struct_copy (slang_struct *, const slang_struct *);
+int slang_struct_equal (const slang_struct *, const slang_struct *);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
diff --git a/mesalib/src/mesa/shader/slang/slang_compile_variable.c b/mesalib/src/mesa/shader/slang/slang_compile_variable.c
new file mode 100644
index 000000000..eab912710
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_variable.c
@@ -0,0 +1,247 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_compile_variable.c
+ * slang front-end compiler
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "slang_compile.h"
+#include "slang_mem.h"
+
+
+static slang_variable *
+slang_variable_new(void)
+{
+   slang_variable *v = (slang_variable *) _slang_alloc(sizeof(slang_variable));
+   if (v) {
+      if (!slang_variable_construct(v)) {
+         _slang_free(v);
+         v = NULL;
+      }
+   }
+   return v;
+}
+
+
+static void
+slang_variable_delete(slang_variable * var)
+{
+   slang_variable_destruct(var);
+   _slang_free(var);
+}
+
+
+/*
+ * slang_variable_scope
+ */
+
+slang_variable_scope *
+_slang_variable_scope_new(slang_variable_scope *parent)
+{
+   slang_variable_scope *s;
+   s = (slang_variable_scope *) _slang_alloc(sizeof(slang_variable_scope));
+   if (s)
+      s->outer_scope = parent;
+   return s;
+}
+
+
+GLvoid
+_slang_variable_scope_ctr(slang_variable_scope * self)
+{
+   self->variables = NULL;
+   self->num_variables = 0;
+   self->outer_scope = NULL;
+}
+
+void
+slang_variable_scope_destruct(slang_variable_scope * scope)
+{
+   unsigned int i;
+
+   if (!scope)
+      return;
+   for (i = 0; i < scope->num_variables; i++) {
+      if (scope->variables[i])
+         slang_variable_delete(scope->variables[i]);
+   }
+   _slang_free(scope->variables);
+   /* do not free scope->outer_scope */
+}
+
+int
+slang_variable_scope_copy(slang_variable_scope * x,
+                          const slang_variable_scope * y)
+{
+   slang_variable_scope z;
+   unsigned int i;
+
+   _slang_variable_scope_ctr(&z);
+   z.variables = (slang_variable **)
+      _slang_alloc(y->num_variables * sizeof(slang_variable *));
+   if (z.variables == NULL) {
+      slang_variable_scope_destruct(&z);
+      return 0;
+   }
+   for (z.num_variables = 0; z.num_variables < y->num_variables;
+        z.num_variables++) {
+      z.variables[z.num_variables] = slang_variable_new();
+      if (!z.variables[z.num_variables]) {
+         slang_variable_scope_destruct(&z);
+         return 0;
+      }
+   }
+   for (i = 0; i < z.num_variables; i++) {
+      if (!slang_variable_copy(z.variables[i], y->variables[i])) {
+         slang_variable_scope_destruct(&z);
+         return 0;
+      }
+   }
+   z.outer_scope = y->outer_scope;
+   slang_variable_scope_destruct(x);
+   *x = z;
+   return 1;
+}
+
+
+/**
+ * Grow the variable list by one.
+ * \return  pointer to space for the new variable (will be initialized)
+ */
+slang_variable *
+slang_variable_scope_grow(slang_variable_scope *scope)
+{
+   const int n = scope->num_variables;
+   scope->variables = (slang_variable **)
+         _slang_realloc(scope->variables,
+                        n * sizeof(slang_variable *),
+                        (n + 1) * sizeof(slang_variable *));
+   if (!scope->variables)
+      return NULL;
+
+   scope->num_variables++;
+
+   scope->variables[n] = slang_variable_new();
+   if (!scope->variables[n])
+      return NULL;
+
+   return scope->variables[n];
+}
+
+
+
+/* slang_variable */
+
+int
+slang_variable_construct(slang_variable * var)
+{
+   if (!slang_fully_specified_type_construct(&var->type))
+      return 0;
+   var->a_name = SLANG_ATOM_NULL;
+   var->array_len = 0;
+   var->initializer = NULL;
+   var->size = 0;
+   var->isTemp = GL_FALSE;
+   var->store = NULL;
+   var->declared = 0;
+   return 1;
+}
+
+
+void
+slang_variable_destruct(slang_variable * var)
+{
+   slang_fully_specified_type_destruct(&var->type);
+   if (var->initializer != NULL) {
+      slang_operation_destruct(var->initializer);
+      _slang_free(var->initializer);
+   }
+#if 0
+   if (var->aux) {
+      _mesa_free(var->aux);
+   }
+#endif
+}
+
+
+int
+slang_variable_copy(slang_variable * x, const slang_variable * y)
+{
+   slang_variable z;
+
+   if (!slang_variable_construct(&z))
+      return 0;
+   if (!slang_fully_specified_type_copy(&z.type, &y->type)) {
+      slang_variable_destruct(&z);
+      return 0;
+   }
+   z.a_name = y->a_name;
+   z.array_len = y->array_len;
+   if (y->initializer != NULL) {
+      z.initializer
+         = (slang_operation *) _slang_alloc(sizeof(slang_operation));
+      if (z.initializer == NULL) {
+         slang_variable_destruct(&z);
+         return 0;
+      }
+      if (!slang_operation_construct(z.initializer)) {
+         _slang_free(z.initializer);
+         slang_variable_destruct(&z);
+         return 0;
+      }
+      if (!slang_operation_copy(z.initializer, y->initializer)) {
+         slang_variable_destruct(&z);
+         return 0;
+      }
+   }
+   z.size = y->size;
+   slang_variable_destruct(x);
+   *x = z;
+   return 1;
+}
+
+
+/**
+ * Search for named variable in given scope.
+ * \param all  if true, search parent scopes too.
+ */
+slang_variable *
+_slang_variable_locate(const slang_variable_scope * scope,
+                       const slang_atom a_name, GLboolean all)
+{
+   while (scope) {
+      GLuint i;
+      for (i = 0; i < scope->num_variables; i++)
+         if (a_name == scope->variables[i]->a_name)
+            return scope->variables[i];
+      if (all)
+         scope = scope->outer_scope;
+      else
+         scope = NULL;
+   }
+   return NULL;
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_compile_variable.h b/mesalib/src/mesa/shader/slang/slang_compile_variable.h
new file mode 100644
index 000000000..b4585599f
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_compile_variable.h
@@ -0,0 +1,90 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.2
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_COMPILE_VARIABLE_H
+#define SLANG_COMPILE_VARIABLE_H
+
+
+struct slang_ir_storage_;
+
+
+/**
+ * A shading language program variable.
+ */
+typedef struct slang_variable_
+{
+   slang_fully_specified_type type; /**< Variable's data type */
+   slang_atom a_name;               /**< The variable's name (char *) */
+   GLuint array_len;                /**< only if type == SLANG_SPEC_ARRAy */
+   struct slang_operation_ *initializer; /**< Optional initializer code */
+   GLuint size;                     /**< Variable's size in bytes */
+   GLboolean is_global;
+   GLboolean isTemp;                /**< a named temporary (__resultTmp) */
+   GLboolean declared;              /**< for debug */
+   struct slang_ir_storage_ *store; /**< Storage for this var */
+} slang_variable;
+
+
+/**
+ * Basically a list of variables, with a pointer to the parent scope.
+ */
+typedef struct slang_variable_scope_
+{
+   slang_variable **variables;  /**< Array [num_variables] of ptrs to vars */
+   GLuint num_variables;
+   struct slang_variable_scope_ *outer_scope;
+} slang_variable_scope;
+
+
+extern slang_variable_scope *
+_slang_variable_scope_new(slang_variable_scope *parent);
+
+extern GLvoid
+_slang_variable_scope_ctr(slang_variable_scope *);
+
+extern void
+slang_variable_scope_destruct(slang_variable_scope *);
+
+extern int
+slang_variable_scope_copy(slang_variable_scope *,
+                          const slang_variable_scope *);
+
+extern slang_variable *
+slang_variable_scope_grow(slang_variable_scope *);
+
+extern int
+slang_variable_construct(slang_variable *);
+
+extern void
+slang_variable_destruct(slang_variable *);
+
+extern int
+slang_variable_copy(slang_variable *, const slang_variable *);
+
+extern slang_variable *
+_slang_variable_locate(const slang_variable_scope *, const slang_atom a_name,
+                       GLboolean all);
+
+
+#endif /* SLANG_COMPILE_VARIABLE_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_emit.c b/mesalib/src/mesa/shader/slang/slang_emit.c
new file mode 100644
index 000000000..3f455e064
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_emit.c
@@ -0,0 +1,2518 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2005-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2008 VMware, Inc.   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_emit.c
+ * Emit program instructions (PI code) from IR trees.
+ * \author Brian Paul
+ */
+
+/***
+ *** NOTES
+ ***
+ *** To emit GPU instructions, we basically just do an in-order traversal
+ *** of the IR tree.
+ ***/
+
+
+#include "main/imports.h"
+#include "main/context.h"
+#include "main/macros.h"
+#include "shader/program.h"
+#include "shader/prog_instruction.h"
+#include "shader/prog_parameter.h"
+#include "shader/prog_print.h"
+#include "slang_builtin.h"
+#include "slang_emit.h"
+#include "slang_mem.h"
+
+
+#define PEEPHOLE_OPTIMIZATIONS 1
+#define ANNOTATE 0
+
+
+typedef struct
+{
+   slang_info_log *log;
+   slang_var_table *vt;
+   struct gl_program *prog;
+   struct gl_program **Subroutines;
+   GLuint NumSubroutines;
+
+   GLuint MaxInstructions;  /**< size of prog->Instructions[] buffer */
+
+   GLboolean UnresolvedFunctions;
+
+   /* code-gen options */
+   GLboolean EmitHighLevelInstructions;
+   GLboolean EmitCondCodes;
+   GLboolean EmitComments;
+   GLboolean EmitBeginEndSub; /* XXX TEMPORARY */
+} slang_emit_info;
+
+
+
+static struct gl_program *
+new_subroutine(slang_emit_info *emitInfo, GLuint *id)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   const GLuint n = emitInfo->NumSubroutines;
+
+   emitInfo->Subroutines = (struct gl_program **)
+      _mesa_realloc(emitInfo->Subroutines,
+                    n * sizeof(struct gl_program),
+                    (n + 1) * sizeof(struct gl_program));
+   emitInfo->Subroutines[n] = ctx->Driver.NewProgram(ctx, emitInfo->prog->Target, 0);
+   emitInfo->Subroutines[n]->Parameters = emitInfo->prog->Parameters;
+   emitInfo->NumSubroutines++;
+   *id = n;
+   return emitInfo->Subroutines[n];
+}
+
+
+/**
+ * Convert a writemask to a swizzle.  Used for testing cond codes because
+ * we only want to test the cond code component(s) that was set by the
+ * previous instruction.
+ */
+static GLuint
+writemask_to_swizzle(GLuint writemask)
+{
+   if (writemask == WRITEMASK_X)
+      return SWIZZLE_XXXX;
+   if (writemask == WRITEMASK_Y)
+      return SWIZZLE_YYYY;
+   if (writemask == WRITEMASK_Z)
+      return SWIZZLE_ZZZZ;
+   if (writemask == WRITEMASK_W)
+      return SWIZZLE_WWWW;
+   return SWIZZLE_XYZW;  /* shouldn't be hit */
+}
+
+
+/**
+ * Convert a swizzle mask to a writemask.
+ * Note that the slang_ir_storage->Swizzle field can represent either a
+ * swizzle mask or a writemask, depending on how it's used.  For example,
+ * when we parse "direction.yz" alone, we don't know whether .yz is a
+ * writemask or a swizzle.  In this case, we encode ".yz" in store->Swizzle
+ * as a swizzle mask (.yz?? actually).  Later, if direction.yz is used as
+ * an R-value, we use store->Swizzle as-is.  Otherwise, if direction.yz is
+ * used as an L-value, we convert it to a writemask.
+ */
+static GLuint
+swizzle_to_writemask(GLuint swizzle)
+{
+   GLuint i, writemask = 0x0;
+   for (i = 0; i < 4; i++) {
+      GLuint swz = GET_SWZ(swizzle, i);
+      if (swz <= SWIZZLE_W) {
+         writemask |= (1 << swz);
+      }
+   }
+   return writemask;
+}
+
+
+/**
+ * Swizzle a swizzle (function composition).
+ * That is, return swz2(swz1), or said another way: swz1.szw2
+ * Example: swizzle_swizzle(".zwxx", ".xxyw") yields ".zzwx"
+ */
+GLuint
+_slang_swizzle_swizzle(GLuint swz1, GLuint swz2)
+{
+   GLuint i, swz, s[4];
+   for (i = 0; i < 4; i++) {
+      GLuint c = GET_SWZ(swz2, i);
+      if (c <= SWIZZLE_W)
+         s[i] = GET_SWZ(swz1, c);
+      else
+         s[i] = c;
+   }
+   swz = MAKE_SWIZZLE4(s[0], s[1], s[2], s[3]);
+   return swz;
+}
+
+
+/**
+ * Return the default swizzle mask for accessing a variable of the
+ * given size (in floats).  If size = 1, comp is used to identify
+ * which component [0..3] of the register holds the variable.
+ */
+GLuint
+_slang_var_swizzle(GLint size, GLint comp)
+{
+   switch (size) {
+   case 1:
+      return MAKE_SWIZZLE4(comp, SWIZZLE_NIL, SWIZZLE_NIL, SWIZZLE_NIL);
+   case 2:
+      return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_NIL, SWIZZLE_NIL);
+   case 3:
+      return MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Z, SWIZZLE_NIL);
+   default:
+      return SWIZZLE_XYZW;
+   }
+}
+
+
+
+/**
+ * Allocate storage for the given node (if it hasn't already been allocated).
+ *
+ * Typically this is temporary storage for an intermediate result (such as
+ * for a multiply or add, etc).
+ *
+ * If n->Store does not exist it will be created and will be of the size
+ * specified by defaultSize.
+ */
+static GLboolean
+alloc_node_storage(slang_emit_info *emitInfo, slang_ir_node *n,
+                   GLint defaultSize)
+{
+   assert(!n->Var);
+   if (!n->Store) {
+      assert(defaultSize > 0);
+      n->Store = _slang_new_ir_storage(PROGRAM_TEMPORARY, -1, defaultSize);
+   }
+
+   /* now allocate actual register(s).  I.e. set n->Store->Index >= 0 */
+   if (n->Store->Index < 0) {
+      if (!_slang_alloc_temp(emitInfo->vt, n->Store)) {
+         slang_info_log_error(emitInfo->log,
+                              "Ran out of registers, too many temporaries");
+         _slang_free(n->Store);
+         n->Store = NULL;
+         return GL_FALSE;
+      }
+   }
+   return GL_TRUE;
+}
+
+
+/**
+ * Free temporary storage, if n->Store is, in fact, temp storage.
+ * Otherwise, no-op.
+ */
+static void
+free_node_storage(slang_var_table *vt, slang_ir_node *n)
+{
+   if (n->Store->File == PROGRAM_TEMPORARY &&
+       n->Store->Index >= 0 &&
+       n->Opcode != IR_SWIZZLE) {
+      if (_slang_is_temp(vt, n->Store)) {
+         _slang_free_temp(vt, n->Store);
+         n->Store->Index = -1;
+         n->Store = NULL; /* XXX this may not be needed */
+      }
+   }
+}
+
+
+/**
+ * Helper function to allocate a short-term temporary.
+ * Free it with _slang_free_temp().
+ */
+static GLboolean
+alloc_local_temp(slang_emit_info *emitInfo, slang_ir_storage *temp, GLint size)
+{
+   assert(size >= 1);
+   assert(size <= 4);
+   _mesa_bzero(temp, sizeof(*temp));
+   temp->Size = size;
+   temp->File = PROGRAM_TEMPORARY;
+   temp->Index = -1;
+   return _slang_alloc_temp(emitInfo->vt, temp);
+}
+
+
+/**
+ * Remove any SWIZZLE_NIL terms from given swizzle mask.
+ * For a swizzle like .z??? generate .zzzz (replicate single component).
+ * Else, for .wx?? generate .wxzw (insert default component for the position).
+ */
+static GLuint
+fix_swizzle(GLuint swizzle)
+{
+   GLuint c0 = GET_SWZ(swizzle, 0),
+      c1 = GET_SWZ(swizzle, 1),
+      c2 = GET_SWZ(swizzle, 2),
+      c3 = GET_SWZ(swizzle, 3);
+   if (c1 == SWIZZLE_NIL && c2 == SWIZZLE_NIL && c3 == SWIZZLE_NIL) {
+      /* smear first component across all positions */
+      c1 = c2 = c3 = c0;
+   }
+   else {
+      /* insert default swizzle components */
+      if (c0 == SWIZZLE_NIL)
+         c0 = SWIZZLE_X;
+      if (c1 == SWIZZLE_NIL)
+         c1 = SWIZZLE_Y;
+      if (c2 == SWIZZLE_NIL)
+         c2 = SWIZZLE_Z;
+      if (c3 == SWIZZLE_NIL)
+         c3 = SWIZZLE_W;
+   }
+   return MAKE_SWIZZLE4(c0, c1, c2, c3);
+}
+
+
+
+/**
+ * Convert IR storage to an instruction dst register.
+ */
+static void
+storage_to_dst_reg(struct prog_dst_register *dst, const slang_ir_storage *st)
+{
+   const GLboolean relAddr = st->RelAddr;
+   const GLint size = st->Size;
+   GLint index = st->Index;
+   GLuint swizzle = st->Swizzle;
+
+   assert(index >= 0);
+   /* if this is storage relative to some parent storage, walk up the tree */
+   while (st->Parent) {
+      st = st->Parent;
+      assert(st->Index >= 0);
+      index += st->Index;
+      swizzle = _slang_swizzle_swizzle(st->Swizzle, swizzle);
+   }
+
+   assert(st->File != PROGRAM_UNDEFINED);
+   dst->File = st->File;
+
+   assert(index >= 0);
+   dst->Index = index;
+
+   assert(size >= 1);
+   assert(size <= 4);
+
+   if (swizzle != SWIZZLE_XYZW) {
+      dst->WriteMask = swizzle_to_writemask(swizzle);
+   }
+   else {
+      switch (size) {
+      case 1:
+         dst->WriteMask = WRITEMASK_X << GET_SWZ(st->Swizzle, 0);
+         break;
+      case 2:
+         dst->WriteMask = WRITEMASK_XY;
+         break;
+      case 3:
+         dst->WriteMask = WRITEMASK_XYZ;
+         break;
+      case 4:
+         dst->WriteMask = WRITEMASK_XYZW;
+         break;
+      default:
+         ; /* error would have been caught above */
+      }
+   }
+
+   dst->RelAddr = relAddr;
+}
+
+
+/**
+ * Convert IR storage to an instruction src register.
+ */
+static void
+storage_to_src_reg(struct prog_src_register *src, const slang_ir_storage *st)
+{
+   const GLboolean relAddr = st->RelAddr;
+   GLint index = st->Index;
+   GLuint swizzle = st->Swizzle;
+
+   /* if this is storage relative to some parent storage, walk up the tree */
+   assert(index >= 0);
+   while (st->Parent) {
+      st = st->Parent;
+      if (st->Index < 0) {
+         /* an error should have been reported already */
+         return;
+      }
+      assert(st->Index >= 0);
+      index += st->Index;
+      swizzle = _slang_swizzle_swizzle(fix_swizzle(st->Swizzle), swizzle);
+   }
+
+   assert(st->File >= 0);
+#if 1 /* XXX temporary */
+   if (st->File == PROGRAM_UNDEFINED) {
+      slang_ir_storage *st0 = (slang_ir_storage *) st;
+      st0->File = PROGRAM_TEMPORARY;
+   }
+#endif
+   assert(st->File < PROGRAM_UNDEFINED);
+   src->File = st->File;
+
+   assert(index >= 0);
+   src->Index = index;
+
+   swizzle = fix_swizzle(swizzle);
+   assert(GET_SWZ(swizzle, 0) <= SWIZZLE_W);
+   assert(GET_SWZ(swizzle, 1) <= SWIZZLE_W);
+   assert(GET_SWZ(swizzle, 2) <= SWIZZLE_W);
+   assert(GET_SWZ(swizzle, 3) <= SWIZZLE_W);
+   src->Swizzle = swizzle;
+
+   src->RelAddr = relAddr;
+}
+
+
+/*
+ * Setup storage pointing to a scalar constant/literal.
+ */
+static void
+constant_to_storage(slang_emit_info *emitInfo,
+                    GLfloat val,
+                    slang_ir_storage *store)
+{
+   GLuint swizzle;
+   GLint reg;
+   GLfloat value[4];
+
+   value[0] = val;
+   reg = _mesa_add_unnamed_constant(emitInfo->prog->Parameters,
+                                        value, 1, &swizzle);
+
+   memset(store, 0, sizeof(*store));
+   store->File = PROGRAM_CONSTANT;
+   store->Index = reg;
+   store->Swizzle = swizzle;
+}
+
+
+/**
+ * Add new instruction at end of given program.
+ * \param prog  the program to append instruction onto
+ * \param opcode  opcode for the new instruction
+ * \return pointer to the new instruction
+ */
+static struct prog_instruction *
+new_instruction(slang_emit_info *emitInfo, gl_inst_opcode opcode)
+{
+   struct gl_program *prog = emitInfo->prog;
+   struct prog_instruction *inst;
+
+#if 0
+   /* print prev inst */
+   if (prog->NumInstructions > 0) {
+      _mesa_print_instruction(prog->Instructions + prog->NumInstructions - 1);
+   }
+#endif
+   assert(prog->NumInstructions <= emitInfo->MaxInstructions);
+
+   if (prog->NumInstructions == emitInfo->MaxInstructions) {
+      /* grow the instruction buffer */
+      emitInfo->MaxInstructions += 20;
+      prog->Instructions =
+         _mesa_realloc_instructions(prog->Instructions,
+                                    prog->NumInstructions,
+                                    emitInfo->MaxInstructions);
+   }
+
+   inst = prog->Instructions + prog->NumInstructions;
+   prog->NumInstructions++;
+   _mesa_init_instructions(inst, 1);
+   inst->Opcode = opcode;
+   inst->BranchTarget = -1; /* invalid */
+   /*
+   printf("New inst %d: %p %s\n", prog->NumInstructions-1,(void*)inst,
+          _mesa_opcode_string(inst->Opcode));
+   */
+   return inst;
+}
+
+
+static struct prog_instruction *
+emit_arl_load(slang_emit_info *emitInfo,
+              gl_register_file file, GLint index, GLuint swizzle)
+{
+   struct prog_instruction *inst = new_instruction(emitInfo, OPCODE_ARL);
+   inst->SrcReg[0].File = file;
+   inst->SrcReg[0].Index = index;
+   inst->SrcReg[0].Swizzle = fix_swizzle(swizzle);
+   inst->DstReg.File = PROGRAM_ADDRESS;
+   inst->DstReg.Index = 0;
+   inst->DstReg.WriteMask = WRITEMASK_X;
+   return inst;
+}
+
+
+/**
+ * Emit a new instruction with given opcode, operands.
+ * At this point the instruction may have multiple indirect register
+ * loads/stores.  We convert those into ARL loads and address-relative
+ * operands.  See comments inside.
+ * At some point in the future we could directly emit indirectly addressed
+ * registers in Mesa GPU instructions.
+ */
+static struct prog_instruction *
+emit_instruction(slang_emit_info *emitInfo,
+                 gl_inst_opcode opcode,
+                 const slang_ir_storage *dst,
+                 const slang_ir_storage *src0,
+                 const slang_ir_storage *src1,
+                 const slang_ir_storage *src2)
+{
+   struct prog_instruction *inst;
+   GLuint numIndirect = 0;
+   const slang_ir_storage *src[3];
+   slang_ir_storage newSrc[3], newDst;
+   GLuint i;
+   GLboolean isTemp[3];
+
+   isTemp[0] = isTemp[1] = isTemp[2] = GL_FALSE;
+
+   src[0] = src0;
+   src[1] = src1;
+   src[2] = src2;
+
+   /* count up how many operands are indirect loads */
+   for (i = 0; i < 3; i++) {
+      if (src[i] && src[i]->IsIndirect)
+         numIndirect++;
+   }
+   if (dst && dst->IsIndirect)
+      numIndirect++;
+
+   /* Take special steps for indirect register loads.
+    * If we had multiple address registers this would be simpler.
+    * For example, this GLSL code:
+    *    x[i] = y[j] + z[k];
+    * would translate into something like:
+    *    ARL ADDR.x, i;
+    *    ARL ADDR.y, j;
+    *    ARL ADDR.z, k;
+    *    ADD TEMP[ADDR.x+5], TEMP[ADDR.y+9], TEMP[ADDR.z+4];
+    * But since we currently only have one address register we have to do this:
+    *    ARL ADDR.x, i;
+    *    MOV t1, TEMP[ADDR.x+9];
+    *    ARL ADDR.x, j;
+    *    MOV t2, TEMP[ADDR.x+4];
+    *    ARL ADDR.x, k;
+    *    ADD TEMP[ADDR.x+5], t1, t2;
+    * The code here figures this out...
+    */
+   if (numIndirect > 0) {
+      for (i = 0; i < 3; i++) {
+         if (src[i] && src[i]->IsIndirect) {
+            /* load the ARL register with the indirect register */
+            emit_arl_load(emitInfo,
+                          src[i]->IndirectFile,
+                          src[i]->IndirectIndex,
+                          src[i]->IndirectSwizzle);
+
+            if (numIndirect > 1) {
+               /* Need to load src[i] into a temporary register */
+               slang_ir_storage srcRelAddr;
+               alloc_local_temp(emitInfo, &newSrc[i], src[i]->Size);
+               isTemp[i] = GL_TRUE;
+
+               /* set RelAddr flag on src register */
+               srcRelAddr = *src[i];
+               srcRelAddr.RelAddr = GL_TRUE;
+               srcRelAddr.IsIndirect = GL_FALSE; /* not really needed */
+
+               /* MOV newSrc, srcRelAddr; */
+               inst = emit_instruction(emitInfo,
+                                       OPCODE_MOV,
+                                       &newSrc[i],
+                                       &srcRelAddr,
+                                       NULL,
+                                       NULL);
+
+               src[i] = &newSrc[i];
+            }
+            else {
+               /* just rewrite the src[i] storage to be ARL-relative */
+               newSrc[i] = *src[i];
+               newSrc[i].RelAddr = GL_TRUE;
+               newSrc[i].IsIndirect = GL_FALSE; /* not really needed */
+               src[i] = &newSrc[i];
+            }
+         }
+      }
+   }
+
+   /* Take special steps for indirect dest register write */
+   if (dst && dst->IsIndirect) {
+      /* load the ARL register with the indirect register */
+      emit_arl_load(emitInfo,
+                    dst->IndirectFile,
+                    dst->IndirectIndex,
+                    dst->IndirectSwizzle);
+      newDst = *dst;
+      newDst.RelAddr = GL_TRUE;
+      newDst.IsIndirect = GL_FALSE;
+      dst = &newDst;
+   }
+
+   /* OK, emit the instruction and its dst, src regs */
+   inst = new_instruction(emitInfo, opcode);
+   if (!inst)
+      return NULL;
+
+   if (dst)
+      storage_to_dst_reg(&inst->DstReg, dst);
+
+   for (i = 0; i < 3; i++) {
+      if (src[i])
+         storage_to_src_reg(&inst->SrcReg[i], src[i]);
+   }
+
+   /* Free any temp registers that we allocated above */
+   for (i = 0; i < 3; i++) {
+      if (isTemp[i])
+         _slang_free_temp(emitInfo->vt, &newSrc[i]);
+   }
+
+   return inst;
+}
+
+
+
+/**
+ * Put a comment on the given instruction.
+ */
+static void
+inst_comment(struct prog_instruction *inst, const char *comment)
+{
+   if (inst)
+      inst->Comment = _mesa_strdup(comment);
+}
+
+
+
+/**
+ * Return pointer to last instruction in program.
+ */
+static struct prog_instruction *
+prev_instruction(slang_emit_info *emitInfo)
+{
+   struct gl_program *prog = emitInfo->prog;
+   if (prog->NumInstructions == 0)
+      return NULL;
+   else
+      return prog->Instructions + prog->NumInstructions - 1;
+}
+
+
+static struct prog_instruction *
+emit(slang_emit_info *emitInfo, slang_ir_node *n);
+
+
+/**
+ * Return an annotation string for given node's storage.
+ */
+static char *
+storage_annotation(const slang_ir_node *n, const struct gl_program *prog)
+{
+#if ANNOTATE
+   const slang_ir_storage *st = n->Store;
+   static char s[100] = "";
+
+   if (!st)
+      return _mesa_strdup("");
+
+   switch (st->File) {
+   case PROGRAM_CONSTANT:
+      if (st->Index >= 0) {
+         const GLfloat *val = prog->Parameters->ParameterValues[st->Index];
+         if (st->Swizzle == SWIZZLE_NOOP)
+            sprintf(s, "{%g, %g, %g, %g}", val[0], val[1], val[2], val[3]);
+         else {
+            sprintf(s, "%g", val[GET_SWZ(st->Swizzle, 0)]);
+         }
+      }
+      break;
+   case PROGRAM_TEMPORARY:
+      if (n->Var)
+         sprintf(s, "%s", (char *) n->Var->a_name);
+      else
+         sprintf(s, "t[%d]", st->Index);
+      break;
+   case PROGRAM_STATE_VAR:
+   case PROGRAM_UNIFORM:
+      sprintf(s, "%s", prog->Parameters->Parameters[st->Index].Name);
+      break;
+   case PROGRAM_VARYING:
+      sprintf(s, "%s", prog->Varying->Parameters[st->Index].Name);
+      break;
+   case PROGRAM_INPUT:
+      sprintf(s, "input[%d]", st->Index);
+      break;
+   case PROGRAM_OUTPUT:
+      sprintf(s, "output[%d]", st->Index);
+      break;
+   default:
+      s[0] = 0;
+   }
+   return _mesa_strdup(s);
+#else
+   return NULL;
+#endif
+}
+
+
+/**
+ * Return an annotation string for an instruction.
+ */
+static char *
+instruction_annotation(gl_inst_opcode opcode, char *dstAnnot,
+                       char *srcAnnot0, char *srcAnnot1, char *srcAnnot2)
+{
+#if ANNOTATE
+   const char *operator;
+   char *s;
+   int len = 50;
+
+   if (dstAnnot)
+      len += strlen(dstAnnot);
+   else
+      dstAnnot = _mesa_strdup("");
+
+   if (srcAnnot0)
+      len += strlen(srcAnnot0);
+   else
+      srcAnnot0 = _mesa_strdup("");
+
+   if (srcAnnot1)
+      len += strlen(srcAnnot1);
+   else
+      srcAnnot1 = _mesa_strdup("");
+
+   if (srcAnnot2)
+      len += strlen(srcAnnot2);
+   else
+      srcAnnot2 = _mesa_strdup("");
+
+   switch (opcode) {
+   case OPCODE_ADD:
+      operator = "+";
+      break;
+   case OPCODE_SUB:
+      operator = "-";
+      break;
+   case OPCODE_MUL:
+      operator = "*";
+      break;
+   case OPCODE_DP2:
+      operator = "DP2";
+      break;
+   case OPCODE_DP3:
+      operator = "DP3";
+      break;
+   case OPCODE_DP4:
+      operator = "DP4";
+      break;
+   case OPCODE_XPD:
+      operator = "XPD";
+      break;
+   case OPCODE_RSQ:
+      operator = "RSQ";
+      break;
+   case OPCODE_SGT:
+      operator = ">";
+      break;
+   default:
+      operator = ",";
+   }
+
+   s = (char *) malloc(len);
+   sprintf(s, "%s = %s %s %s %s", dstAnnot,
+           srcAnnot0, operator, srcAnnot1, srcAnnot2);
+   assert(_mesa_strlen(s) < len);
+
+   free(dstAnnot);
+   free(srcAnnot0);
+   free(srcAnnot1);
+   free(srcAnnot2);
+
+   return s;
+#else
+   return NULL;
+#endif
+}
+
+
+/**
+ * Emit an instruction that's just a comment.
+ */
+static struct prog_instruction *
+emit_comment(slang_emit_info *emitInfo, const char *comment)
+{
+   struct prog_instruction *inst = new_instruction(emitInfo, OPCODE_NOP);
+   inst_comment(inst, comment);
+   return inst;
+}
+
+
+/**
+ * Generate code for a simple arithmetic instruction.
+ * Either 1, 2 or 3 operands.
+ */
+static struct prog_instruction *
+emit_arith(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   const slang_ir_info *info = _slang_ir_info(n->Opcode);
+   struct prog_instruction *inst;
+   GLuint i;
+
+   assert(info);
+   assert(info->InstOpcode != OPCODE_NOP);
+
+#if PEEPHOLE_OPTIMIZATIONS
+   /* Look for MAD opportunity */
+   if (info->NumParams == 2 &&
+       n->Opcode == IR_ADD && n->Children[0]->Opcode == IR_MUL) {
+      /* found pattern IR_ADD(IR_MUL(A, B), C) */
+      emit(emitInfo, n->Children[0]->Children[0]);  /* A */
+      emit(emitInfo, n->Children[0]->Children[1]);  /* B */
+      emit(emitInfo, n->Children[1]);  /* C */
+      alloc_node_storage(emitInfo, n, -1);  /* dest */
+
+      inst = emit_instruction(emitInfo,
+                              OPCODE_MAD,
+                              n->Store,
+                              n->Children[0]->Children[0]->Store,
+                              n->Children[0]->Children[1]->Store,
+                              n->Children[1]->Store);
+
+      free_node_storage(emitInfo->vt, n->Children[0]->Children[0]);
+      free_node_storage(emitInfo->vt, n->Children[0]->Children[1]);
+      free_node_storage(emitInfo->vt, n->Children[1]);
+      return inst;
+   }
+
+   if (info->NumParams == 2 &&
+       n->Opcode == IR_ADD && n->Children[1]->Opcode == IR_MUL) {
+      /* found pattern IR_ADD(A, IR_MUL(B, C)) */
+      emit(emitInfo, n->Children[0]);  /* A */
+      emit(emitInfo, n->Children[1]->Children[0]);  /* B */
+      emit(emitInfo, n->Children[1]->Children[1]);  /* C */
+      alloc_node_storage(emitInfo, n, -1);  /* dest */
+
+      inst = emit_instruction(emitInfo,
+                              OPCODE_MAD,
+                              n->Store,
+                              n->Children[1]->Children[0]->Store,
+                              n->Children[1]->Children[1]->Store,
+                              n->Children[0]->Store);
+
+      free_node_storage(emitInfo->vt, n->Children[1]->Children[0]);
+      free_node_storage(emitInfo->vt, n->Children[1]->Children[1]);
+      free_node_storage(emitInfo->vt, n->Children[0]);
+      return inst;
+   }
+#endif
+
+   /* gen code for children, may involve temp allocation */
+   for (i = 0; i < info->NumParams; i++) {
+      emit(emitInfo, n->Children[i]);
+      if (!n->Children[i] || !n->Children[i]->Store) {
+         /* error recovery */
+         return NULL;
+      }
+   }
+
+   /* result storage */
+   alloc_node_storage(emitInfo, n, -1);
+
+   inst = emit_instruction(emitInfo,
+                           info->InstOpcode,
+                           n->Store,  /* dest */
+                           (info->NumParams > 0 ? n->Children[0]->Store : NULL),
+                           (info->NumParams > 1 ? n->Children[1]->Store : NULL),
+                           (info->NumParams > 2 ? n->Children[2]->Store : NULL)
+                           );
+
+   /* free temps */
+   for (i = 0; i < info->NumParams; i++)
+      free_node_storage(emitInfo->vt, n->Children[i]);
+
+   return inst;
+}
+
+
+/**
+ * Emit code for == and != operators.  These could normally be handled
+ * by emit_arith() except we need to be able to handle structure comparisons.
+ */
+static struct prog_instruction *
+emit_compare(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct prog_instruction *inst = NULL;
+   GLint size;
+
+   assert(n->Opcode == IR_EQUAL || n->Opcode == IR_NOTEQUAL);
+
+   /* gen code for children */
+   emit(emitInfo, n->Children[0]);
+   emit(emitInfo, n->Children[1]);
+
+   if (n->Children[0]->Store->Size != n->Children[1]->Store->Size) {
+      /* XXX this error should have been caught in slang_codegen.c */
+      slang_info_log_error(emitInfo->log, "invalid operands to == or !=");
+      n->Store = NULL;
+      return NULL;
+   }
+
+   /* final result is 1 bool */
+   if (!alloc_node_storage(emitInfo, n, 1))
+      return NULL;
+
+   size = n->Children[0]->Store->Size;
+
+   if (size == 1) {
+      gl_inst_opcode opcode = n->Opcode == IR_EQUAL ? OPCODE_SEQ : OPCODE_SNE;
+      inst =  emit_instruction(emitInfo,
+                               opcode,
+                               n->Store, /* dest */
+                               n->Children[0]->Store,
+                               n->Children[1]->Store,
+                               NULL);
+   }
+   else if (size <= 4) {
+      /* compare two vectors.
+       * Unfortunately, there's no instruction to compare vectors and
+       * return a scalar result.  Do it with some compare and dot product
+       * instructions...
+       */
+      GLuint swizzle;
+      gl_inst_opcode dotOp;
+      slang_ir_storage tempStore;
+
+      if (!alloc_local_temp(emitInfo, &tempStore, 4)) {
+         n->Store = NULL;
+         return NULL;
+         /* out of temps */
+      }
+
+      if (size == 4) {
+         dotOp = OPCODE_DP4;
+         swizzle = SWIZZLE_XYZW;
+      }
+      else if (size == 3) {
+         dotOp = OPCODE_DP3;
+         swizzle = SWIZZLE_XYZW;
+      }
+      else {
+         assert(size == 2);
+         dotOp = OPCODE_DP3; /* XXX use OPCODE_DP2 eventually */
+         swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y, SWIZZLE_Y, SWIZZLE_Y);
+      }
+
+      /* Compute inequality (temp = (A != B)) */
+      inst = emit_instruction(emitInfo,
+                              OPCODE_SNE,
+                              &tempStore,
+                              n->Children[0]->Store,
+                              n->Children[1]->Store,
+                              NULL);
+      inst_comment(inst, "Compare values");
+
+      /* Compute val = DOT(temp, temp)  (reduction) */
+      inst = emit_instruction(emitInfo,
+                              dotOp,
+                              n->Store,
+                              &tempStore,
+                              &tempStore,
+                              NULL);
+      inst->SrcReg[0].Swizzle = inst->SrcReg[1].Swizzle = swizzle; /*override*/
+      inst_comment(inst, "Reduce vec to bool");
+
+      _slang_free_temp(emitInfo->vt, &tempStore); /* free temp */
+
+      if (n->Opcode == IR_EQUAL) {
+         /* compute val = !val.x  with SEQ val, val, 0; */
+         slang_ir_storage zero;
+         constant_to_storage(emitInfo, 0.0, &zero);
+         inst = emit_instruction(emitInfo,
+                                 OPCODE_SEQ,
+                                 n->Store, /* dest */
+                                 n->Store,
+                                 &zero,
+                                 NULL);
+         inst_comment(inst, "Invert true/false");
+      }
+   }
+   else {
+      /* size > 4, struct or array compare.
+       * XXX this won't work reliably for structs with padding!!
+       */
+      GLint i, num = (n->Children[0]->Store->Size + 3) / 4;
+      slang_ir_storage accTemp, sneTemp;
+
+      if (!alloc_local_temp(emitInfo, &accTemp, 4))
+         return NULL;
+
+      if (!alloc_local_temp(emitInfo, &sneTemp, 4))
+         return NULL;
+
+      for (i = 0; i < num; i++) {
+         slang_ir_storage srcStore0 = *n->Children[0]->Store;
+         slang_ir_storage srcStore1 = *n->Children[1]->Store;
+         srcStore0.Index += i;
+         srcStore1.Index += i;
+
+         if (i == 0) {
+            /* SNE accTemp, left[i], right[i] */
+            inst = emit_instruction(emitInfo, OPCODE_SNE,
+                                    &accTemp, /* dest */
+                                    &srcStore0,
+                                    &srcStore1,
+                                    NULL);
+            inst_comment(inst, "Begin struct/array comparison");
+         }
+         else {
+            /* SNE sneTemp, left[i], right[i] */
+            inst = emit_instruction(emitInfo, OPCODE_SNE,
+                                    &sneTemp, /* dest */
+                                    &srcStore0,
+                                    &srcStore1,
+                                    NULL);
+            /* ADD accTemp, accTemp, sneTemp; # like logical-OR */
+            inst = emit_instruction(emitInfo, OPCODE_ADD,
+                                    &accTemp, /* dest */
+                                    &accTemp,
+                                    &sneTemp,
+                                    NULL);
+         }
+      }
+
+      /* compute accTemp.x || accTemp.y || accTemp.z || accTemp.w with DOT4 */
+      inst = emit_instruction(emitInfo, OPCODE_DP4,
+                              n->Store,
+                              &accTemp,
+                              &accTemp,
+                              NULL);
+      inst_comment(inst, "End struct/array comparison");
+
+      if (n->Opcode == IR_EQUAL) {
+         /* compute tmp.x = !tmp.x  via tmp.x = (tmp.x == 0) */
+         slang_ir_storage zero;
+         constant_to_storage(emitInfo, 0.0, &zero);
+         inst = emit_instruction(emitInfo, OPCODE_SEQ,
+                                 n->Store, /* dest */
+                                 n->Store,
+                                 &zero,
+                                 NULL);
+         inst_comment(inst, "Invert true/false");
+      }
+
+      _slang_free_temp(emitInfo->vt, &accTemp);
+      _slang_free_temp(emitInfo->vt, &sneTemp);
+   }
+
+   /* free temps */
+   free_node_storage(emitInfo->vt, n->Children[0]);
+   free_node_storage(emitInfo->vt, n->Children[1]);
+
+   return inst;
+}
+
+
+
+/**
+ * Generate code for an IR_CLAMP instruction.
+ */
+static struct prog_instruction *
+emit_clamp(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct prog_instruction *inst;
+   slang_ir_node tmpNode;
+
+   assert(n->Opcode == IR_CLAMP);
+   /* ch[0] = value
+    * ch[1] = min limit
+    * ch[2] = max limit
+    */
+
+   inst = emit(emitInfo, n->Children[0]);
+
+   /* If lower limit == 0.0 and upper limit == 1.0,
+    *    set prev instruction's SaturateMode field to SATURATE_ZERO_ONE.
+    * Else,
+    *    emit OPCODE_MIN, OPCODE_MAX sequence.
+    */
+#if 0
+   /* XXX this isn't quite finished yet */
+   if (n->Children[1]->Opcode == IR_FLOAT &&
+       n->Children[1]->Value[0] == 0.0 &&
+       n->Children[1]->Value[1] == 0.0 &&
+       n->Children[1]->Value[2] == 0.0 &&
+       n->Children[1]->Value[3] == 0.0 &&
+       n->Children[2]->Opcode == IR_FLOAT &&
+       n->Children[2]->Value[0] == 1.0 &&
+       n->Children[2]->Value[1] == 1.0 &&
+       n->Children[2]->Value[2] == 1.0 &&
+       n->Children[2]->Value[3] == 1.0) {
+      if (!inst) {
+         inst = prev_instruction(prog);
+      }
+      if (inst && inst->Opcode != OPCODE_NOP) {
+         /* and prev instruction's DstReg matches n->Children[0]->Store */
+         inst->SaturateMode = SATURATE_ZERO_ONE;
+         n->Store = n->Children[0]->Store;
+         return inst;
+      }
+   }
+#endif
+
+   if (!alloc_node_storage(emitInfo, n, n->Children[0]->Store->Size))
+      return NULL;
+
+   emit(emitInfo, n->Children[1]);
+   emit(emitInfo, n->Children[2]);
+
+   /* Some GPUs don't allow reading from output registers.  So if the
+    * dest for this clamp() is an output reg, we can't use that reg for
+    * the intermediate result.  Use a temp register instead.
+    */
+   _mesa_bzero(&tmpNode, sizeof(tmpNode));
+   alloc_node_storage(emitInfo, &tmpNode, n->Store->Size);
+
+   /* tmp = max(ch[0], ch[1]) */
+   inst = emit_instruction(emitInfo, OPCODE_MAX,
+                           tmpNode.Store, /* dest */
+                           n->Children[0]->Store,
+                           n->Children[1]->Store,
+                           NULL);
+
+   /* n->dest = min(tmp, ch[2]) */
+   inst = emit_instruction(emitInfo, OPCODE_MIN,
+                           n->Store, /* dest */
+                           tmpNode.Store,
+                           n->Children[2]->Store,
+                           NULL);
+
+   free_node_storage(emitInfo->vt, &tmpNode);
+
+   return inst;
+}
+
+
+static struct prog_instruction *
+emit_negation(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   /* Implement as MOV dst, -src; */
+   /* XXX we could look at the previous instruction and in some circumstances
+    * modify it to accomplish the negation.
+    */
+   struct prog_instruction *inst;
+
+   emit(emitInfo, n->Children[0]);
+
+   if (!alloc_node_storage(emitInfo, n, n->Children[0]->Store->Size))
+      return NULL;
+
+   inst = emit_instruction(emitInfo,
+                           OPCODE_MOV,
+                           n->Store, /* dest */
+                           n->Children[0]->Store,
+                           NULL,
+                           NULL);
+   inst->SrcReg[0].Negate = NEGATE_XYZW;
+   return inst;
+}
+
+
+static struct prog_instruction *
+emit_label(slang_emit_info *emitInfo, const slang_ir_node *n)
+{
+   assert(n->Label);
+#if 0
+   /* XXX this fails in loop tail code - investigate someday */
+   assert(_slang_label_get_location(n->Label) < 0);
+   _slang_label_set_location(n->Label, emitInfo->prog->NumInstructions,
+                             emitInfo->prog);
+#else
+   if (_slang_label_get_location(n->Label) < 0)
+      _slang_label_set_location(n->Label, emitInfo->prog->NumInstructions,
+                                emitInfo->prog);
+#endif
+   return NULL;
+}
+
+
+/**
+ * Emit code for a function call.
+ * Note that for each time a function is called, we emit the function's
+ * body code again because the set of available registers may be different.
+ */
+static struct prog_instruction *
+emit_fcall(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct gl_program *progSave;
+   struct prog_instruction *inst;
+   GLuint subroutineId;
+   GLuint maxInstSave;
+
+   assert(n->Opcode == IR_CALL);
+   assert(n->Label);
+
+   /* save/push cur program */
+   maxInstSave = emitInfo->MaxInstructions;
+   progSave = emitInfo->prog;
+
+   emitInfo->prog = new_subroutine(emitInfo, &subroutineId);
+   emitInfo->MaxInstructions = emitInfo->prog->NumInstructions;
+
+   _slang_label_set_location(n->Label, emitInfo->prog->NumInstructions,
+                             emitInfo->prog);
+
+   if (emitInfo->EmitBeginEndSub) {
+      /* BGNSUB isn't a real instruction.
+       * We require a label (i.e. "foobar:") though, if we're going to
+       * print the program in the NV format.  The BNGSUB instruction is
+       * really just a NOP to attach the label to.
+       */
+      inst = new_instruction(emitInfo, OPCODE_BGNSUB);
+      inst_comment(inst, n->Label->Name);
+   }
+
+   /* body of function: */
+   emit(emitInfo, n->Children[0]);
+   n->Store = n->Children[0]->Store;
+
+   /* add RET instruction now, if needed */
+   inst = prev_instruction(emitInfo);
+   if (inst && inst->Opcode != OPCODE_RET) {
+      inst = new_instruction(emitInfo, OPCODE_RET);
+   }
+
+   if (emitInfo->EmitBeginEndSub) {
+      inst = new_instruction(emitInfo, OPCODE_ENDSUB);
+      inst_comment(inst, n->Label->Name);
+   }
+
+   /* pop/restore cur program */
+   emitInfo->prog = progSave;
+   emitInfo->MaxInstructions = maxInstSave;
+
+   /* emit the function call */
+   inst = new_instruction(emitInfo, OPCODE_CAL);
+   /* The branch target is just the subroutine number (changed later) */
+   inst->BranchTarget = subroutineId;
+   inst_comment(inst, n->Label->Name);
+   assert(inst->BranchTarget >= 0);
+
+   return inst;
+}
+
+
+/**
+ * Emit code for a 'return' statement.
+ */
+static struct prog_instruction *
+emit_return(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct prog_instruction *inst;
+   assert(n);
+   assert(n->Opcode == IR_RETURN);
+   assert(n->Label);
+   inst = new_instruction(emitInfo, OPCODE_RET);
+   inst->DstReg.CondMask = COND_TR;  /* always return */
+   return inst;
+}
+
+
+static struct prog_instruction *
+emit_kill(slang_emit_info *emitInfo)
+{
+   struct gl_fragment_program *fp;
+   struct prog_instruction *inst;
+   /* NV-KILL - discard fragment depending on condition code.
+    * Note that ARB-KILL depends on sign of vector operand.
+    */
+   inst = new_instruction(emitInfo, OPCODE_KIL_NV);
+   inst->DstReg.CondMask = COND_TR;  /* always kill */
+
+   assert(emitInfo->prog->Target == GL_FRAGMENT_PROGRAM_ARB);
+   fp = (struct gl_fragment_program *) emitInfo->prog;
+   fp->UsesKill = GL_TRUE;
+
+   return inst;
+}
+
+
+static struct prog_instruction *
+emit_tex(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct prog_instruction *inst;
+   gl_inst_opcode opcode;
+   GLboolean shadow = GL_FALSE;
+
+   switch (n->Opcode) {
+   case IR_TEX:
+      opcode = OPCODE_TEX;
+      break;
+   case IR_TEX_SH:
+      opcode = OPCODE_TEX;
+      shadow = GL_TRUE;
+      break;
+   case IR_TEXB:
+      opcode = OPCODE_TXB;
+      break;
+   case IR_TEXB_SH:
+      opcode = OPCODE_TXB;
+      shadow = GL_TRUE;
+      break;
+   case IR_TEXP:
+      opcode = OPCODE_TXP;
+      break;
+   case IR_TEXP_SH:
+      opcode = OPCODE_TXP;
+      shadow = GL_TRUE;
+      break;
+   default:
+      _mesa_problem(NULL, "Bad IR TEX code");
+      return NULL;
+   }
+
+   if (n->Children[0]->Opcode == IR_ELEMENT) {
+      /* array is the sampler (a uniform which'll indicate the texture unit) */
+      assert(n->Children[0]->Children[0]->Store);
+      assert(n->Children[0]->Children[0]->Store->File == PROGRAM_SAMPLER);
+
+      emit(emitInfo, n->Children[0]);
+
+      n->Children[0]->Var = n->Children[0]->Children[0]->Var;
+   } else {
+      /* this is the sampler (a uniform which'll indicate the texture unit) */
+      assert(n->Children[0]->Store);
+      assert(n->Children[0]->Store->File == PROGRAM_SAMPLER);
+   }
+
+   /* emit code for the texcoord operand */
+   (void) emit(emitInfo, n->Children[1]);
+
+   /* alloc storage for result of texture fetch */
+   if (!alloc_node_storage(emitInfo, n, 4))
+      return NULL;
+
+   /* emit TEX instruction;  Child[1] is the texcoord */
+   inst = emit_instruction(emitInfo,
+                           opcode,
+                           n->Store,
+                           n->Children[1]->Store,
+                           NULL,
+                           NULL);
+
+   inst->TexShadow = shadow;
+
+   /* Store->Index is the uniform/sampler index */
+   assert(n->Children[0]->Store->Index >= 0);
+   inst->TexSrcUnit = n->Children[0]->Store->Index;
+   inst->TexSrcTarget = n->Children[0]->Store->TexTarget;
+
+   /* mark the sampler as being used */
+   _mesa_use_uniform(emitInfo->prog->Parameters,
+                     (char *) n->Children[0]->Var->a_name);
+
+   return inst;
+}
+
+
+/**
+ * Assignment/copy
+ */
+static struct prog_instruction *
+emit_copy(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct prog_instruction *inst;
+
+   assert(n->Opcode == IR_COPY);
+
+   /* lhs */
+   emit(emitInfo, n->Children[0]);
+   if (!n->Children[0]->Store || n->Children[0]->Store->Index < 0) {
+      /* an error should have been already recorded */
+      return NULL;
+   }
+
+   /* rhs */
+   assert(n->Children[1]);
+   inst = emit(emitInfo, n->Children[1]);
+
+   if (!n->Children[1]->Store || n->Children[1]->Store->Index < 0) {
+      if (!emitInfo->log->text && !emitInfo->UnresolvedFunctions) {
+         /* XXX this error should have been caught in slang_codegen.c */
+         slang_info_log_error(emitInfo->log, "invalid assignment");
+      }
+      return NULL;
+   }
+
+   assert(n->Children[1]->Store->Index >= 0);
+
+   /*assert(n->Children[0]->Store->Size == n->Children[1]->Store->Size);*/
+
+   n->Store = n->Children[0]->Store;
+
+   if (n->Store->File == PROGRAM_SAMPLER) {
+      /* no code generated for sampler assignments,
+       * just copy the sampler index/target at compile time.
+       */
+      n->Store->Index = n->Children[1]->Store->Index;
+      n->Store->TexTarget = n->Children[1]->Store->TexTarget;
+      return NULL;
+   }
+
+#if PEEPHOLE_OPTIMIZATIONS
+   if (inst &&
+       (n->Children[1]->Opcode != IR_SWIZZLE) &&
+       _slang_is_temp(emitInfo->vt, n->Children[1]->Store) &&
+       (inst->DstReg.File == n->Children[1]->Store->File) &&
+       (inst->DstReg.Index == n->Children[1]->Store->Index) &&
+       !n->Children[0]->Store->IsIndirect &&
+       n->Children[0]->Store->Size <= 4) {
+      /* Peephole optimization:
+       * The Right-Hand-Side has its results in a temporary place.
+       * Modify the RHS (and the prev instruction) to store its results
+       * in the destination specified by n->Children[0].
+       * Then, this MOVE is a no-op.
+       * Ex:
+       *   MUL tmp, x, y;
+       *   MOV a, tmp;
+       * becomes:
+       *   MUL a, x, y;
+       */
+
+      /* fixup the previous instruction (which stored the RHS result) */
+      assert(n->Children[0]->Store->Index >= 0);
+      storage_to_dst_reg(&inst->DstReg, n->Children[0]->Store);
+      return inst;
+   }
+   else
+#endif
+   {
+      if (n->Children[0]->Store->Size > 4) {
+         /* move matrix/struct etc (block of registers) */
+         slang_ir_storage dstStore = *n->Children[0]->Store;
+         slang_ir_storage srcStore = *n->Children[1]->Store;
+         GLint size = srcStore.Size;
+         ASSERT(n->Children[1]->Store->Swizzle == SWIZZLE_NOOP);
+         dstStore.Size = 4;
+         srcStore.Size = 4;
+         while (size >= 4) {
+            inst = emit_instruction(emitInfo, OPCODE_MOV,
+                                    &dstStore,
+                                    &srcStore,
+                                    NULL,
+                                    NULL);
+            inst_comment(inst, "IR_COPY block");
+            srcStore.Index++;
+            dstStore.Index++;
+            size -= 4;
+         }
+      }
+      else {
+         /* single register move */
+         char *srcAnnot, *dstAnnot;
+         assert(n->Children[0]->Store->Index >= 0);
+         inst = emit_instruction(emitInfo, OPCODE_MOV,
+                                 n->Children[0]->Store, /* dest */
+                                 n->Children[1]->Store,
+                                 NULL,
+                                 NULL);
+         dstAnnot = storage_annotation(n->Children[0], emitInfo->prog);
+         srcAnnot = storage_annotation(n->Children[1], emitInfo->prog);
+         inst->Comment = instruction_annotation(inst->Opcode, dstAnnot,
+                                                srcAnnot, NULL, NULL);
+      }
+      free_node_storage(emitInfo->vt, n->Children[1]);
+      return inst;
+   }
+}
+
+
+/**
+ * An IR_COND node wraps a boolean expression which is used by an
+ * IF or WHILE test.  This is where we'll set condition codes, if needed.
+ */
+static struct prog_instruction *
+emit_cond(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct prog_instruction *inst;
+
+   assert(n->Opcode == IR_COND);
+
+   if (!n->Children[0])
+      return NULL;
+
+   /* emit code for the expression */
+   inst = emit(emitInfo, n->Children[0]);
+
+   if (!n->Children[0]->Store) {
+      /* error recovery */
+      return NULL;
+   }
+
+   assert(n->Children[0]->Store);
+   /*assert(n->Children[0]->Store->Size == 1);*/
+
+   if (emitInfo->EmitCondCodes) {
+      if (inst &&
+          n->Children[0]->Store &&
+          inst->DstReg.File == n->Children[0]->Store->File &&
+          inst->DstReg.Index == n->Children[0]->Store->Index) {
+         /* The previous instruction wrote to the register who's value
+          * we're testing.  Just fix that instruction so that the
+          * condition codes are computed.
+          */
+         inst->CondUpdate = GL_TRUE;
+         n->Store = n->Children[0]->Store;
+         return inst;
+      }
+      else {
+         /* This'll happen for things like "if (i) ..." where no code
+          * is normally generated for the expression "i".
+          * Generate a move instruction just to set condition codes.
+          */
+         if (!alloc_node_storage(emitInfo, n, 1))
+            return NULL;
+         inst = emit_instruction(emitInfo, OPCODE_MOV,
+                                 n->Store, /* dest */
+                                 n->Children[0]->Store,
+                                 NULL,
+                                 NULL);
+         inst->CondUpdate = GL_TRUE;
+         inst_comment(inst, "COND expr");
+         _slang_free_temp(emitInfo->vt, n->Store);
+         return inst;
+      }
+   }
+   else {
+      /* No-op: the boolean result of the expression is in a regular reg */
+      n->Store = n->Children[0]->Store;
+      return inst;
+   }
+}
+
+
+/**
+ * Logical-NOT
+ */
+static struct prog_instruction *
+emit_not(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   static const struct {
+      gl_inst_opcode op, opNot;
+   } operators[] = {
+      { OPCODE_SLT, OPCODE_SGE },
+      { OPCODE_SLE, OPCODE_SGT },
+      { OPCODE_SGT, OPCODE_SLE },
+      { OPCODE_SGE, OPCODE_SLT },
+      { OPCODE_SEQ, OPCODE_SNE },
+      { OPCODE_SNE, OPCODE_SEQ },
+      { 0, 0 }
+   };
+   struct prog_instruction *inst;
+   slang_ir_storage zero;
+   GLuint i;
+
+   /* child expr */
+   inst = emit(emitInfo, n->Children[0]);
+
+#if PEEPHOLE_OPTIMIZATIONS
+   if (inst) {
+      /* if the prev instruction was a comparison instruction, invert it */
+      for (i = 0; operators[i].op; i++) {
+         if (inst->Opcode == operators[i].op) {
+            inst->Opcode = operators[i].opNot;
+            n->Store = n->Children[0]->Store;
+            return inst;
+         }
+      }
+   }
+#endif
+
+   /* else, invert using SEQ (v = v == 0) */
+   if (!alloc_node_storage(emitInfo, n, n->Children[0]->Store->Size))
+      return NULL;
+
+   constant_to_storage(emitInfo, 0.0, &zero);
+   inst = emit_instruction(emitInfo,
+                           OPCODE_SEQ,
+                           n->Store,
+                           n->Children[0]->Store,
+                           &zero,
+                           NULL);
+   inst_comment(inst, "NOT");
+
+   free_node_storage(emitInfo->vt, n->Children[0]);
+
+   return inst;
+}
+
+
+static struct prog_instruction *
+emit_if(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct gl_program *prog = emitInfo->prog;
+   GLuint ifInstLoc, elseInstLoc = 0;
+   GLuint condWritemask = 0;
+
+   /* emit condition expression code */
+   {
+      struct prog_instruction *inst;
+      inst = emit(emitInfo, n->Children[0]);
+      if (emitInfo->EmitCondCodes) {
+         if (!inst) {
+            /* error recovery */
+            return NULL;
+         }
+         condWritemask = inst->DstReg.WriteMask;
+      }
+   }
+
+   if (!n->Children[0]->Store)
+      return NULL;
+
+#if 0
+   assert(n->Children[0]->Store->Size == 1); /* a bool! */
+#endif
+
+   ifInstLoc = prog->NumInstructions;
+   if (emitInfo->EmitHighLevelInstructions) {
+      if (emitInfo->EmitCondCodes) {
+         /* IF condcode THEN ... */
+         struct prog_instruction *ifInst;
+         ifInst = new_instruction(emitInfo, OPCODE_IF);
+         ifInst->DstReg.CondMask = COND_NE;  /* if cond is non-zero */
+         /* only test the cond code (1 of 4) that was updated by the
+          * previous instruction.
+          */
+         ifInst->DstReg.CondSwizzle = writemask_to_swizzle(condWritemask);
+      }
+      else {
+         /* IF src[0] THEN ... */
+         emit_instruction(emitInfo, OPCODE_IF,
+                          NULL, /* dst */
+                          n->Children[0]->Store, /* op0 */
+                          NULL,
+                          NULL);
+      }
+   }
+   else {
+      /* conditional jump to else, or endif */
+      struct prog_instruction *ifInst = new_instruction(emitInfo, OPCODE_BRA);
+      ifInst->DstReg.CondMask = COND_EQ;  /* BRA if cond is zero */
+      inst_comment(ifInst, "if zero");
+      ifInst->DstReg.CondSwizzle = writemask_to_swizzle(condWritemask);
+   }
+
+   /* if body */
+   emit(emitInfo, n->Children[1]);
+
+   if (n->Children[2]) {
+      /* have else body */
+      elseInstLoc = prog->NumInstructions;
+      if (emitInfo->EmitHighLevelInstructions) {
+         (void) new_instruction(emitInfo, OPCODE_ELSE);
+      }
+      else {
+         /* jump to endif instruction */
+         struct prog_instruction *inst;
+         inst = new_instruction(emitInfo, OPCODE_BRA);
+         inst_comment(inst, "else");
+         inst->DstReg.CondMask = COND_TR;  /* always branch */
+      }
+      prog->Instructions[ifInstLoc].BranchTarget = prog->NumInstructions;
+      emit(emitInfo, n->Children[2]);
+   }
+   else {
+      /* no else body */
+      prog->Instructions[ifInstLoc].BranchTarget = prog->NumInstructions;
+   }
+
+   if (emitInfo->EmitHighLevelInstructions) {
+      (void) new_instruction(emitInfo, OPCODE_ENDIF);
+   }
+
+   if (n->Children[2]) {
+      prog->Instructions[elseInstLoc].BranchTarget = prog->NumInstructions;
+   }
+   return NULL;
+}
+
+
+static struct prog_instruction *
+emit_loop(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct gl_program *prog = emitInfo->prog;
+   struct prog_instruction *endInst;
+   GLuint beginInstLoc, tailInstLoc, endInstLoc;
+   slang_ir_node *ir;
+
+   /* emit OPCODE_BGNLOOP */
+   beginInstLoc = prog->NumInstructions;
+   if (emitInfo->EmitHighLevelInstructions) {
+      (void) new_instruction(emitInfo, OPCODE_BGNLOOP);
+   }
+
+   /* body */
+   emit(emitInfo, n->Children[0]);
+
+   /* tail */
+   tailInstLoc = prog->NumInstructions;
+   if (n->Children[1]) {
+      if (emitInfo->EmitComments)
+         emit_comment(emitInfo, "Loop tail code:");
+      emit(emitInfo, n->Children[1]);
+   }
+
+   endInstLoc = prog->NumInstructions;
+   if (emitInfo->EmitHighLevelInstructions) {
+      /* emit OPCODE_ENDLOOP */
+      endInst = new_instruction(emitInfo, OPCODE_ENDLOOP);
+   }
+   else {
+      /* emit unconditional BRA-nch */
+      endInst = new_instruction(emitInfo, OPCODE_BRA);
+      endInst->DstReg.CondMask = COND_TR;  /* always true */
+   }
+   /* ENDLOOP's BranchTarget points to the BGNLOOP inst */
+   endInst->BranchTarget = beginInstLoc;
+
+   if (emitInfo->EmitHighLevelInstructions) {
+      /* BGNLOOP's BranchTarget points to the ENDLOOP inst */
+      prog->Instructions[beginInstLoc].BranchTarget = prog->NumInstructions -1;
+   }
+
+   /* Done emitting loop code.  Now walk over the loop's linked list of
+    * BREAK and CONT nodes, filling in their BranchTarget fields (which
+    * will point to the ENDLOOP+1 or BGNLOOP instructions, respectively).
+    */
+   for (ir = n->List; ir; ir = ir->List) {
+      struct prog_instruction *inst = prog->Instructions + ir->InstLocation;
+      assert(inst->BranchTarget < 0);
+      if (ir->Opcode == IR_BREAK ||
+          ir->Opcode == IR_BREAK_IF_TRUE) {
+         assert(inst->Opcode == OPCODE_BRK ||
+                inst->Opcode == OPCODE_BRA);
+         /* go to instruction after end of loop */
+         inst->BranchTarget = endInstLoc + 1;
+      }
+      else {
+         assert(ir->Opcode == IR_CONT ||
+                ir->Opcode == IR_CONT_IF_TRUE);
+         assert(inst->Opcode == OPCODE_CONT ||
+                inst->Opcode == OPCODE_BRA);
+         /* go to instruction at tail of loop */
+         inst->BranchTarget = endInstLoc;
+      }
+   }
+   return NULL;
+}
+
+
+/**
+ * Unconditional "continue" or "break" statement.
+ * Either OPCODE_CONT, OPCODE_BRK or OPCODE_BRA will be emitted.
+ */
+static struct prog_instruction *
+emit_cont_break(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   gl_inst_opcode opcode;
+   struct prog_instruction *inst;
+
+   if (n->Opcode == IR_CONT) {
+      /* we need to execute the loop's tail code before doing CONT */
+      assert(n->Parent);
+      assert(n->Parent->Opcode == IR_LOOP);
+      if (n->Parent->Children[1]) {
+         /* emit tail code */
+         if (emitInfo->EmitComments) {
+            emit_comment(emitInfo, "continue - tail code:");
+         }
+         emit(emitInfo, n->Parent->Children[1]);
+      }
+   }
+
+   /* opcode selection */
+   if (emitInfo->EmitHighLevelInstructions) {
+      opcode = (n->Opcode == IR_CONT) ? OPCODE_CONT : OPCODE_BRK;
+   }
+   else {
+      opcode = OPCODE_BRA;
+   }
+   n->InstLocation = emitInfo->prog->NumInstructions;
+   inst = new_instruction(emitInfo, opcode);
+   inst->DstReg.CondMask = COND_TR;  /* always true */
+   return inst;
+}
+
+
+/**
+ * Conditional "continue" or "break" statement.
+ * Either OPCODE_CONT, OPCODE_BRK or OPCODE_BRA will be emitted.
+ */
+static struct prog_instruction *
+emit_cont_break_if_true(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct prog_instruction *inst;
+
+   assert(n->Opcode == IR_CONT_IF_TRUE ||
+          n->Opcode == IR_BREAK_IF_TRUE);
+
+   /* evaluate condition expr, setting cond codes */
+   inst = emit(emitInfo, n->Children[0]);
+   if (emitInfo->EmitCondCodes) {
+      assert(inst);
+      inst->CondUpdate = GL_TRUE;
+   }
+
+   n->InstLocation = emitInfo->prog->NumInstructions;
+
+   /* opcode selection */
+   if (emitInfo->EmitHighLevelInstructions) {
+      const gl_inst_opcode opcode
+         = (n->Opcode == IR_CONT_IF_TRUE) ? OPCODE_CONT : OPCODE_BRK;
+      if (emitInfo->EmitCondCodes) {
+         /* Get the writemask from the previous instruction which set
+          * the condcodes.  Use that writemask as the CondSwizzle.
+          */
+         const GLuint condWritemask = inst->DstReg.WriteMask;
+         inst = new_instruction(emitInfo, opcode);
+         inst->DstReg.CondMask = COND_NE;
+         inst->DstReg.CondSwizzle = writemask_to_swizzle(condWritemask);
+         return inst;
+      }
+      else {
+         /* IF reg
+          *    BRK/CONT;
+          * ENDIF
+          */
+         GLint ifInstLoc;
+         ifInstLoc = emitInfo->prog->NumInstructions;
+         inst = emit_instruction(emitInfo, OPCODE_IF,
+                                 NULL, /* dest */
+                                 n->Children[0]->Store,
+                                 NULL,
+                                 NULL);
+         n->InstLocation = emitInfo->prog->NumInstructions;
+
+         inst = new_instruction(emitInfo, opcode);
+         inst = new_instruction(emitInfo, OPCODE_ENDIF);
+
+         emitInfo->prog->Instructions[ifInstLoc].BranchTarget
+            = emitInfo->prog->NumInstructions;
+         return inst;
+      }
+   }
+   else {
+      const GLuint condWritemask = inst->DstReg.WriteMask;
+      assert(emitInfo->EmitCondCodes);
+      inst = new_instruction(emitInfo, OPCODE_BRA);
+      inst->DstReg.CondMask = COND_NE;
+      inst->DstReg.CondSwizzle = writemask_to_swizzle(condWritemask);
+      return inst;
+   }
+}
+
+
+/**
+ * Return the size of a swizzle mask given that some swizzle components
+ * may be NIL/undefined.  For example:
+ *  swizzle_size(".zzxx") = 4
+ *  swizzle_size(".xy??") = 2
+ *  swizzle_size(".w???") = 1
+ */
+static GLuint
+swizzle_size(GLuint swizzle)
+{
+   GLuint i;
+   for (i = 0; i < 4; i++) {
+      if (GET_SWZ(swizzle, i) == SWIZZLE_NIL)
+         return i;
+   }
+   return 4;
+}
+
+
+static struct prog_instruction *
+emit_swizzle(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct prog_instruction *inst;
+
+   inst = emit(emitInfo, n->Children[0]);
+
+   if (!n->Store->Parent) {
+      /* this covers a case such as "(b ? p : q).x" */
+      n->Store->Parent = n->Children[0]->Store;
+      assert(n->Store->Parent);
+   }
+
+   {
+      const GLuint swizzle = n->Store->Swizzle;
+      /* new storage is parent storage with updated Swizzle + Size fields */
+      _slang_copy_ir_storage(n->Store, n->Store->Parent);
+      /* Apply this node's swizzle to parent's storage */
+      n->Store->Swizzle = _slang_swizzle_swizzle(n->Store->Swizzle, swizzle);
+      /* Update size */
+      n->Store->Size = swizzle_size(n->Store->Swizzle);
+   }
+
+   assert(!n->Store->Parent);
+   assert(n->Store->Index >= 0);
+
+   return inst;
+}
+
+
+/**
+ * Dereference array element:  element == array[index]
+ * This basically involves emitting code for computing the array index
+ * and updating the node/element's storage info.
+ */
+static struct prog_instruction *
+emit_array_element(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   slang_ir_storage *arrayStore, *indexStore;
+   const int elemSize = n->Store->Size;           /* number of floats */
+   const GLint elemSizeVec = (elemSize + 3) / 4;  /* number of vec4 */
+   struct prog_instruction *inst;
+
+   assert(n->Opcode == IR_ELEMENT);
+   assert(elemSize > 0);
+
+   /* special case for built-in state variables, like light state */
+   {
+      slang_ir_storage *root = n->Store;
+      assert(!root->Parent);
+      while (root->Parent)
+         root = root->Parent;
+
+      if (root->File == PROGRAM_STATE_VAR) {
+         GLboolean direct;
+         GLint index =
+            _slang_alloc_statevar(n, emitInfo->prog->Parameters, &direct);
+         if (index < 0) {
+            /* error */
+            return NULL;
+         }
+         if (direct) {
+            n->Store->Index = index;
+            return NULL; /* all done */
+         }
+      }
+   }
+
+   /* do codegen for array itself */
+   emit(emitInfo, n->Children[0]);
+   arrayStore = n->Children[0]->Store;
+
+   /* The initial array element storage is the array's storage,
+    * then modified below.
+    */
+   _slang_copy_ir_storage(n->Store, arrayStore);
+
+
+   if (n->Children[1]->Opcode == IR_FLOAT) {
+      /* Constant array index */
+      const GLint element = (GLint) n->Children[1]->Value[0];
+
+      /* this element's storage is the array's storage, plus constant offset */
+      n->Store->Index += elemSizeVec * element;
+   }
+   else {
+      /* Variable array index */
+
+      /* do codegen for array index expression */
+      emit(emitInfo, n->Children[1]);
+      indexStore = n->Children[1]->Store;
+
+      if (indexStore->IsIndirect) {
+         /* need to put the array index into a temporary since we can't
+          * directly support a[b[i]] constructs.
+          */
+
+
+         /*indexStore = tempstore();*/
+      }
+
+
+      if (elemSize > 4) {
+         /* need to multiply array index by array element size */
+         struct prog_instruction *inst;
+         slang_ir_storage *indexTemp;
+         slang_ir_storage elemSizeStore;
+
+         /* allocate 1 float indexTemp */
+         indexTemp = _slang_new_ir_storage(PROGRAM_TEMPORARY, -1, 1);
+         _slang_alloc_temp(emitInfo->vt, indexTemp);
+
+         /* allocate a constant containing the element size */
+         constant_to_storage(emitInfo, (float) elemSizeVec, &elemSizeStore);
+
+         /* multiply array index by element size */
+         inst = emit_instruction(emitInfo,
+                                 OPCODE_MUL,
+                                 indexTemp, /* dest */
+                                 indexStore, /* the index */
+                                 &elemSizeStore,
+                                 NULL);
+
+         indexStore = indexTemp;
+      }
+
+      if (arrayStore->IsIndirect) {
+         /* ex: in a[i][j], a[i] (the arrayStore) is indirect */
+         /* Need to add indexStore to arrayStore->Indirect store */
+         slang_ir_storage indirectArray;
+         slang_ir_storage *indexTemp;
+
+         _slang_init_ir_storage(&indirectArray,
+                                arrayStore->IndirectFile,
+                                arrayStore->IndirectIndex,
+                                1,
+                                arrayStore->IndirectSwizzle);
+
+         /* allocate 1 float indexTemp */
+         indexTemp = _slang_new_ir_storage(PROGRAM_TEMPORARY, -1, 1);
+         _slang_alloc_temp(emitInfo->vt, indexTemp);
+
+         inst = emit_instruction(emitInfo,
+                                 OPCODE_ADD,
+                                 indexTemp,      /* dest */
+                                 indexStore,     /* the index */
+                                 &indirectArray, /* indirect array base */
+                                 NULL);
+
+         indexStore = indexTemp;
+      }
+
+      /* update the array element storage info */
+      n->Store->IsIndirect = GL_TRUE;
+      n->Store->IndirectFile = indexStore->File;
+      n->Store->IndirectIndex = indexStore->Index;
+      n->Store->IndirectSwizzle = indexStore->Swizzle;
+   }
+
+   n->Store->Size = elemSize;
+   n->Store->Swizzle = _slang_var_swizzle(elemSize, 0);
+
+   return NULL; /* no instruction */
+}
+
+
+/**
+ * Resolve storage for accessing a structure field.
+ */
+static struct prog_instruction *
+emit_struct_field(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   slang_ir_storage *root = n->Store;
+   GLint fieldOffset, fieldSize;
+
+   assert(n->Opcode == IR_FIELD);
+
+   assert(!root->Parent);
+   while (root->Parent)
+      root = root->Parent;
+
+   /* If this is the field of a state var, allocate constant/uniform
+    * storage for it now if we haven't already.
+    * Note that we allocate storage (uniform/constant slots) for state
+    * variables here rather than at declaration time so we only allocate
+    * space for the ones that we actually use!
+    */
+   if (root->File == PROGRAM_STATE_VAR) {
+      GLboolean direct;
+      GLint index = _slang_alloc_statevar(n, emitInfo->prog->Parameters, &direct);
+      if (index < 0) {
+         slang_info_log_error(emitInfo->log, "Error parsing state variable");
+         return NULL;
+      }
+      if (direct) {
+         root->Index = index;
+         return NULL; /* all done */
+      }
+   }
+
+   /* do codegen for struct */
+   emit(emitInfo, n->Children[0]);
+   assert(n->Children[0]->Store->Index >= 0);
+
+
+   fieldOffset = n->Store->Index;
+   fieldSize = n->Store->Size;
+
+   _slang_copy_ir_storage(n->Store, n->Children[0]->Store);
+
+   n->Store->Index = n->Children[0]->Store->Index + fieldOffset / 4;
+   n->Store->Size = fieldSize;
+
+   switch (fieldSize) {
+   case 1:
+      {
+         GLint swz = fieldOffset % 4;
+         n->Store->Swizzle = MAKE_SWIZZLE4(swz, swz, swz, swz);
+      }
+      break;
+   case 2:
+      n->Store->Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y,
+                                        SWIZZLE_NIL, SWIZZLE_NIL);
+      break;
+   case 3:
+      n->Store->Swizzle = MAKE_SWIZZLE4(SWIZZLE_X, SWIZZLE_Y,
+                                        SWIZZLE_Z, SWIZZLE_NIL);
+      break;
+   default:
+      n->Store->Swizzle = SWIZZLE_XYZW;
+   }
+
+   assert(n->Store->Index >= 0);
+
+   return NULL; /* no instruction */
+}
+
+
+/**
+ * Emit code for a variable declaration.
+ * This usually doesn't result in any code generation, but just
+ * memory allocation.
+ */
+static struct prog_instruction *
+emit_var_decl(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   assert(n->Store);
+   assert(n->Store->File != PROGRAM_UNDEFINED);
+   assert(n->Store->Size > 0);
+   /*assert(n->Store->Index < 0);*/
+
+   if (!n->Var || n->Var->isTemp) {
+      /* a nameless/temporary variable, will be freed after first use */
+      /*NEW*/
+      if (n->Store->Index < 0 && !_slang_alloc_temp(emitInfo->vt, n->Store)) {
+         slang_info_log_error(emitInfo->log,
+                              "Ran out of registers, too many temporaries");
+         return NULL;
+      }
+   }
+   else {
+      /* a regular variable */
+      _slang_add_variable(emitInfo->vt, n->Var);
+      if (!_slang_alloc_var(emitInfo->vt, n->Store)) {
+         slang_info_log_error(emitInfo->log,
+                              "Ran out of registers, too many variables");
+         return NULL;
+      }
+      /*
+        printf("IR_VAR_DECL %s %d store %p\n",
+        (char*) n->Var->a_name, n->Store->Index, (void*) n->Store);
+      */
+      assert(n->Var->store == n->Store);
+   }
+   if (emitInfo->EmitComments) {
+      /* emit NOP with comment describing the variable's storage location */
+      char s[1000];
+      sprintf(s, "TEMP[%d]%s = variable %s (size %d)",
+              n->Store->Index,
+              _mesa_swizzle_string(n->Store->Swizzle, 0, GL_FALSE), 
+              (n->Var ? (char *) n->Var->a_name : "anonymous"),
+              n->Store->Size);
+      emit_comment(emitInfo, s);
+   }
+   return NULL;
+}
+
+
+/**
+ * Emit code for a reference to a variable.
+ * Actually, no code is generated but we may do some memory allocation.
+ * In particular, state vars (uniforms) are allocated on an as-needed basis.
+ */
+static struct prog_instruction *
+emit_var_ref(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   assert(n->Store);
+   assert(n->Store->File != PROGRAM_UNDEFINED);
+
+   if (n->Store->File == PROGRAM_STATE_VAR && n->Store->Index < 0) {
+      GLboolean direct;
+      GLint index = _slang_alloc_statevar(n, emitInfo->prog->Parameters, &direct);
+      if (index < 0) {
+         /* error */
+         char s[100];
+         /* XXX isn't this really an out of memory/resources error? */
+         _mesa_snprintf(s, sizeof(s), "Undefined variable '%s'",
+                        (char *) n->Var->a_name);
+         slang_info_log_error(emitInfo->log, s);
+         return NULL;
+      }
+
+      n->Store->Index = index;
+   }
+   else if (n->Store->File == PROGRAM_UNIFORM ||
+            n->Store->File == PROGRAM_SAMPLER) {
+      /* mark var as used */
+      _mesa_use_uniform(emitInfo->prog->Parameters, (char *) n->Var->a_name);
+   }
+   else if (n->Store->File == PROGRAM_INPUT) {
+      assert(n->Store->Index >= 0);
+      emitInfo->prog->InputsRead |= (1 << n->Store->Index);
+   }
+
+   if (n->Store->Index < 0) {
+      /* probably ran out of registers */
+      return NULL;
+   }
+   assert(n->Store->Size > 0);
+
+   return NULL;
+}
+
+
+static struct prog_instruction *
+emit(slang_emit_info *emitInfo, slang_ir_node *n)
+{
+   struct prog_instruction *inst;
+   if (!n)
+      return NULL;
+
+   if (emitInfo->log->error_flag) {
+      return NULL;
+   }
+
+   if (n->Comment) {
+      inst = new_instruction(emitInfo, OPCODE_NOP);
+      inst->Comment = _mesa_strdup(n->Comment);
+      inst = NULL;
+   }
+
+   switch (n->Opcode) {
+   case IR_SEQ:
+      /* sequence of two sub-trees */
+      assert(n->Children[0]);
+      assert(n->Children[1]);
+      emit(emitInfo, n->Children[0]);
+      if (emitInfo->log->error_flag)
+         return NULL;
+      inst = emit(emitInfo, n->Children[1]);
+#if 0
+      assert(!n->Store);
+#endif
+      n->Store = n->Children[1]->Store;
+      return inst;
+
+   case IR_SCOPE:
+      /* new variable scope */
+      _slang_push_var_table(emitInfo->vt);
+      inst = emit(emitInfo, n->Children[0]);
+      _slang_pop_var_table(emitInfo->vt);
+      return inst;
+
+   case IR_VAR_DECL:
+      /* Variable declaration - allocate a register for it */
+      inst = emit_var_decl(emitInfo, n);
+      return inst;
+
+   case IR_VAR:
+      /* Reference to a variable
+       * Storage should have already been resolved/allocated.
+       */
+      return emit_var_ref(emitInfo, n);
+
+   case IR_ELEMENT:
+      return emit_array_element(emitInfo, n);
+   case IR_FIELD:
+      return emit_struct_field(emitInfo, n);
+   case IR_SWIZZLE:
+      return emit_swizzle(emitInfo, n);
+
+   /* Simple arithmetic */
+   /* unary */
+   case IR_MOVE:
+   case IR_RSQ:
+   case IR_RCP:
+   case IR_FLOOR:
+   case IR_FRAC:
+   case IR_F_TO_I:
+   case IR_I_TO_F:
+   case IR_ABS:
+   case IR_SIN:
+   case IR_COS:
+   case IR_DDX:
+   case IR_DDY:
+   case IR_EXP:
+   case IR_EXP2:
+   case IR_LOG2:
+   case IR_NOISE1:
+   case IR_NOISE2:
+   case IR_NOISE3:
+   case IR_NOISE4:
+   case IR_NRM4:
+   case IR_NRM3:
+   /* binary */
+   case IR_ADD:
+   case IR_SUB:
+   case IR_MUL:
+   case IR_DOT4:
+   case IR_DOT3:
+   case IR_DOT2:
+   case IR_CROSS:
+   case IR_MIN:
+   case IR_MAX:
+   case IR_SEQUAL:
+   case IR_SNEQUAL:
+   case IR_SGE:
+   case IR_SGT:
+   case IR_SLE:
+   case IR_SLT:
+   case IR_POW:
+   /* trinary operators */
+   case IR_LRP:
+      return emit_arith(emitInfo, n);
+
+   case IR_EQUAL:
+   case IR_NOTEQUAL:
+      return emit_compare(emitInfo, n);
+
+   case IR_CLAMP:
+      return emit_clamp(emitInfo, n);
+   case IR_TEX:
+   case IR_TEXB:
+   case IR_TEXP:
+   case IR_TEX_SH:
+   case IR_TEXB_SH:
+   case IR_TEXP_SH:
+      return emit_tex(emitInfo, n);
+   case IR_NEG:
+      return emit_negation(emitInfo, n);
+   case IR_FLOAT:
+      /* find storage location for this float constant */
+      n->Store->Index = _mesa_add_unnamed_constant(emitInfo->prog->Parameters,
+                                                   n->Value,
+                                                   n->Store->Size,
+                                                   &n->Store->Swizzle);
+      if (n->Store->Index < 0) {
+         slang_info_log_error(emitInfo->log, "Ran out of space for constants");
+         return NULL;
+      }
+      return NULL;
+
+   case IR_COPY:
+      return emit_copy(emitInfo, n);
+
+   case IR_COND:
+      return emit_cond(emitInfo, n);
+
+   case IR_NOT:
+      return emit_not(emitInfo, n);
+
+   case IR_LABEL:
+      return emit_label(emitInfo, n);
+
+   case IR_KILL:
+      return emit_kill(emitInfo);
+
+   case IR_CALL:
+      /* new variable scope for subroutines/function calls */
+      _slang_push_var_table(emitInfo->vt);
+      inst = emit_fcall(emitInfo, n);
+      _slang_pop_var_table(emitInfo->vt);
+      return inst;
+
+   case IR_IF:
+      return emit_if(emitInfo, n);
+
+   case IR_LOOP:
+      return emit_loop(emitInfo, n);
+   case IR_BREAK_IF_TRUE:
+   case IR_CONT_IF_TRUE:
+      return emit_cont_break_if_true(emitInfo, n);
+   case IR_BREAK:
+      /* fall-through */
+   case IR_CONT:
+      return emit_cont_break(emitInfo, n);
+
+   case IR_BEGIN_SUB:
+      return new_instruction(emitInfo, OPCODE_BGNSUB);
+   case IR_END_SUB:
+      return new_instruction(emitInfo, OPCODE_ENDSUB);
+   case IR_RETURN:
+      return emit_return(emitInfo, n);
+
+   case IR_NOP:
+      return NULL;
+
+   default:
+      _mesa_problem(NULL, "Unexpected IR opcode in emit()\n");
+   }
+   return NULL;
+}
+
+
+/**
+ * After code generation, any subroutines will be in separate program
+ * objects.  This function appends all the subroutines onto the main
+ * program and resolves the linking of all the branch/call instructions.
+ * XXX this logic should really be part of the linking process...
+ */
+static void
+_slang_resolve_subroutines(slang_emit_info *emitInfo)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   struct gl_program *mainP = emitInfo->prog;
+   GLuint *subroutineLoc, i, total;
+
+   subroutineLoc
+      = (GLuint *) _mesa_malloc(emitInfo->NumSubroutines * sizeof(GLuint));
+
+   /* total number of instructions */
+   total = mainP->NumInstructions;
+   for (i = 0; i < emitInfo->NumSubroutines; i++) {
+      subroutineLoc[i] = total;
+      total += emitInfo->Subroutines[i]->NumInstructions;
+   }
+
+   /* adjust BranchTargets within the functions */
+   for (i = 0; i < emitInfo->NumSubroutines; i++) {
+      struct gl_program *sub = emitInfo->Subroutines[i];
+      GLuint j;
+      for (j = 0; j < sub->NumInstructions; j++) {
+         struct prog_instruction *inst = sub->Instructions + j;
+         if (inst->Opcode != OPCODE_CAL && inst->BranchTarget >= 0) {
+            inst->BranchTarget += subroutineLoc[i];
+         }
+      }
+   }
+
+   /* append subroutines' instructions after main's instructions */
+   mainP->Instructions = _mesa_realloc_instructions(mainP->Instructions,
+                                                    mainP->NumInstructions,
+                                                    total);
+   mainP->NumInstructions = total;
+   for (i = 0; i < emitInfo->NumSubroutines; i++) {
+      struct gl_program *sub = emitInfo->Subroutines[i];
+      _mesa_copy_instructions(mainP->Instructions + subroutineLoc[i],
+                              sub->Instructions,
+                              sub->NumInstructions);
+      /* delete subroutine code */
+      sub->Parameters = NULL; /* prevent double-free */
+      _mesa_reference_program(ctx, &emitInfo->Subroutines[i], NULL);
+   }
+
+   /* free subroutine list */
+   if (emitInfo->Subroutines) {
+      _mesa_free(emitInfo->Subroutines);
+      emitInfo->Subroutines = NULL;
+   }
+   emitInfo->NumSubroutines = 0;
+
+   /* Examine CAL instructions.
+    * At this point, the BranchTarget field of the CAL instruction is
+    * the number/id of the subroutine to call (an index into the
+    * emitInfo->Subroutines list).
+    * Translate that into an actual instruction location now.
+    */
+   for (i = 0; i < mainP->NumInstructions; i++) {
+      struct prog_instruction *inst = mainP->Instructions + i;
+      if (inst->Opcode == OPCODE_CAL) {
+         const GLuint f = inst->BranchTarget;
+         inst->BranchTarget = subroutineLoc[f];
+      }
+   }
+
+   _mesa_free(subroutineLoc);
+}
+
+
+
+/**
+ * Convert the IR tree into GPU instructions.
+ * \param n  root of IR tree
+ * \param vt  variable table
+ * \param prog  program to put GPU instructions into
+ * \param pragmas  controls codegen options
+ * \param withEnd  if true, emit END opcode at end
+ * \param log  log for emitting errors/warnings/info
+ */
+GLboolean
+_slang_emit_code(slang_ir_node *n, slang_var_table *vt,
+                 struct gl_program *prog,
+                 const struct gl_sl_pragmas *pragmas,
+                 GLboolean withEnd,
+                 slang_info_log *log)
+{
+   GET_CURRENT_CONTEXT(ctx);
+   GLboolean success;
+   slang_emit_info emitInfo;
+   GLuint maxUniforms;
+
+   emitInfo.log = log;
+   emitInfo.vt = vt;
+   emitInfo.prog = prog;
+   emitInfo.Subroutines = NULL;
+   emitInfo.NumSubroutines = 0;
+   emitInfo.MaxInstructions = prog->NumInstructions;
+
+   emitInfo.EmitHighLevelInstructions = ctx->Shader.EmitHighLevelInstructions;
+   emitInfo.EmitCondCodes = ctx->Shader.EmitCondCodes;
+   emitInfo.EmitComments = ctx->Shader.EmitComments || pragmas->Debug;
+   emitInfo.EmitBeginEndSub = GL_TRUE;
+
+   if (!emitInfo.EmitCondCodes) {
+      emitInfo.EmitHighLevelInstructions = GL_TRUE;
+   }      
+
+   /* Check uniform/constant limits */
+   if (prog->Target == GL_FRAGMENT_PROGRAM_ARB) {
+      maxUniforms = ctx->Const.FragmentProgram.MaxUniformComponents / 4;
+   }
+   else {
+      assert(prog->Target == GL_VERTEX_PROGRAM_ARB);
+      maxUniforms = ctx->Const.VertexProgram.MaxUniformComponents / 4;
+   }
+   if (prog->Parameters->NumParameters > maxUniforms) {
+      slang_info_log_error(log, "Constant/uniform register limit exceeded "
+                           "(max=%u vec4)", maxUniforms);
+
+      return GL_FALSE;
+   }
+
+   (void) emit(&emitInfo, n);
+
+   /* finish up by adding the END opcode to program */
+   if (withEnd) {
+      struct prog_instruction *inst;
+      inst = new_instruction(&emitInfo, OPCODE_END);
+   }
+
+   _slang_resolve_subroutines(&emitInfo);
+
+   success = GL_TRUE;
+
+#if 0
+   printf("*********** End emit code (%u inst):\n", prog->NumInstructions);
+   _mesa_print_program(prog);
+   _mesa_print_program_parameters(ctx,prog);
+#endif
+
+   return success;
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_emit.h b/mesalib/src/mesa/shader/slang/slang_emit.h
new file mode 100644
index 000000000..ab4c202d6
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_emit.h
@@ -0,0 +1,51 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 2005-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_EMIT_H
+#define SLANG_EMIT_H
+
+
+#include "main/imports.h"
+#include "slang_compile.h"
+#include "slang_ir.h"
+#include "main/mtypes.h"
+
+
+extern GLuint
+_slang_swizzle_swizzle(GLuint swz1, GLuint swz2);
+
+
+extern GLuint
+_slang_var_swizzle(GLint size, GLint comp);
+
+
+extern GLboolean
+_slang_emit_code(slang_ir_node *n, slang_var_table *vartable,
+                 struct gl_program *prog,
+                 const struct gl_sl_pragmas *pragmas,
+                 GLboolean withEnd,
+                 slang_info_log *log);
+
+
+#endif /* SLANG_EMIT_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_ir.c b/mesalib/src/mesa/shader/slang/slang_ir.c
new file mode 100644
index 000000000..1c7f7474e
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_ir.c
@@ -0,0 +1,497 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2005-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#include "main/imports.h"
+#include "main/context.h"
+#include "slang_ir.h"
+#include "slang_mem.h"
+#include "shader/prog_instruction.h"
+#include "shader/prog_print.h"
+
+
+static const slang_ir_info IrInfo[] = {
+   /* binary ops */
+   { IR_ADD, "IR_ADD", OPCODE_ADD, 4, 2 },
+   { IR_SUB, "IR_SUB", OPCODE_SUB, 4, 2 },
+   { IR_MUL, "IR_MUL", OPCODE_MUL, 4, 2 },
+   { IR_DIV, "IR_DIV", OPCODE_NOP, 0, 2 }, /* XXX broke */
+   { IR_DOT4, "IR_DOT4", OPCODE_DP4, 1, 2 },
+   { IR_DOT3, "IR_DOT3", OPCODE_DP3, 1, 2 },
+   { IR_DOT2, "IR_DOT2", OPCODE_DP2, 1, 2 },
+   { IR_NRM4, "IR_NRM4", OPCODE_NRM4, 1, 1 },
+   { IR_NRM3, "IR_NRM3", OPCODE_NRM3, 1, 1 },
+   { IR_CROSS, "IR_CROSS", OPCODE_XPD, 3, 2 },
+   { IR_LRP, "IR_LRP", OPCODE_LRP, 4, 3 },
+   { IR_MIN, "IR_MIN", OPCODE_MIN, 4, 2 },
+   { IR_MAX, "IR_MAX", OPCODE_MAX, 4, 2 },
+   { IR_CLAMP, "IR_CLAMP", OPCODE_NOP, 4, 3 }, /* special case: emit_clamp() */
+   { IR_SEQUAL, "IR_SEQUAL", OPCODE_SEQ, 4, 2 },
+   { IR_SNEQUAL, "IR_SNEQUAL", OPCODE_SNE, 4, 2 },
+   { IR_SGE, "IR_SGE", OPCODE_SGE, 4, 2 },
+   { IR_SGT, "IR_SGT", OPCODE_SGT, 4, 2 },
+   { IR_SLE, "IR_SLE", OPCODE_SLE, 4, 2 },
+   { IR_SLT, "IR_SLT", OPCODE_SLT, 4, 2 },
+   { IR_POW, "IR_POW", OPCODE_POW, 1, 2 },
+   { IR_EQUAL, "IR_EQUAL", OPCODE_NOP, 1, 2 },
+   { IR_NOTEQUAL, "IR_NOTEQUAL", OPCODE_NOP, 1, 2 },
+
+   /* unary ops */
+   { IR_MOVE, "IR_MOVE", OPCODE_MOV, 4, 1 },
+   { IR_I_TO_F, "IR_I_TO_F", OPCODE_MOV, 4, 1 },  /* int[4] to float[4] */
+   { IR_F_TO_I, "IR_F_TO_I", OPCODE_TRUNC, 4, 1 },
+   { IR_EXP, "IR_EXP", OPCODE_EXP, 1, 1 },
+   { IR_EXP2, "IR_EXP2", OPCODE_EX2, 1, 1 },
+   { IR_LOG2, "IR_LOG2", OPCODE_LG2, 1, 1 },
+   { IR_RSQ, "IR_RSQ", OPCODE_RSQ, 1, 1 },
+   { IR_RCP, "IR_RCP", OPCODE_RCP, 1, 1 },
+   { IR_FLOOR, "IR_FLOOR", OPCODE_FLR, 4, 1 },
+   { IR_FRAC, "IR_FRAC", OPCODE_FRC, 4, 1 },
+   { IR_ABS, "IR_ABS", OPCODE_ABS, 4, 1 },
+   { IR_NEG, "IR_NEG", OPCODE_NOP, 4, 1 }, /* special case: emit_negation() */
+   { IR_DDX, "IR_DDX", OPCODE_DDX, 4, 1 },
+   { IR_DDY, "IR_DDY", OPCODE_DDY, 4, 1 },
+   { IR_SIN, "IR_SIN", OPCODE_SIN, 1, 1 },
+   { IR_COS, "IR_COS", OPCODE_COS, 1, 1 },
+   { IR_NOISE1, "IR_NOISE1", OPCODE_NOISE1, 1, 1 },
+   { IR_NOISE2, "IR_NOISE2", OPCODE_NOISE2, 1, 1 },
+   { IR_NOISE3, "IR_NOISE3", OPCODE_NOISE3, 1, 1 },
+   { IR_NOISE4, "IR_NOISE4", OPCODE_NOISE4, 1, 1 },
+
+   /* other */
+   { IR_SEQ, "IR_SEQ", OPCODE_NOP, 0, 0 },
+   { IR_SCOPE, "IR_SCOPE", OPCODE_NOP, 0, 0 },
+   { IR_LABEL, "IR_LABEL", OPCODE_NOP, 0, 0 },
+   { IR_IF, "IR_IF", OPCODE_NOP, 0, 0 },
+   { IR_KILL, "IR_KILL", OPCODE_NOP, 0, 0 },
+   { IR_COND, "IR_COND", OPCODE_NOP, 0, 0 },
+   { IR_CALL, "IR_CALL", OPCODE_NOP, 0, 0 },
+   { IR_COPY, "IR_COPY", OPCODE_NOP, 0, 1 },
+   { IR_NOT, "IR_NOT", OPCODE_NOP, 1, 1 },
+   { IR_VAR, "IR_VAR", OPCODE_NOP, 0, 0 },
+   { IR_VAR_DECL, "IR_VAR_DECL", OPCODE_NOP, 0, 0 },
+   { IR_TEX, "IR_TEX", OPCODE_TEX, 4, 1 },
+   { IR_TEXB, "IR_TEXB", OPCODE_TXB, 4, 1 },
+   { IR_TEXP, "IR_TEXP", OPCODE_TXP, 4, 1 },
+   { IR_TEX_SH, "IR_TEX_SH", OPCODE_TEX, 4, 1 },
+   { IR_TEXB_SH, "IR_TEXB_SH", OPCODE_TXB, 4, 1 },
+   { IR_TEXP_SH, "IR_TEXP_SH", OPCODE_TXP, 4, 1 },
+   { IR_FLOAT, "IR_FLOAT", OPCODE_NOP, 0, 0 }, /* float literal */
+   { IR_FIELD, "IR_FIELD", OPCODE_NOP, 0, 0 },
+   { IR_ELEMENT, "IR_ELEMENT", OPCODE_NOP, 0, 0 },
+   { IR_SWIZZLE, "IR_SWIZZLE", OPCODE_NOP, 0, 0 },
+   { IR_NOP, "IR_NOP", OPCODE_NOP, 0, 0 },
+   { 0, NULL, 0, 0, 0 }
+};
+
+
+const slang_ir_info *
+_slang_ir_info(slang_ir_opcode opcode)
+{
+   GLuint i;
+   for (i = 0; IrInfo[i].IrName; i++) {
+      if (IrInfo[i].IrOpcode == opcode) {
+	 return IrInfo + i;
+      }
+   }
+   return NULL;
+}
+
+
+void
+_slang_init_ir_storage(slang_ir_storage *st,
+                       gl_register_file file, GLint index, GLint size,
+                       GLuint swizzle)
+{
+   st->File = file;
+   st->Index = index;
+   st->Size = size;
+   st->Swizzle = swizzle;
+   st->Parent = NULL;
+   st->IsIndirect = GL_FALSE;
+}
+
+
+/**
+ * Return a new slang_ir_storage object.
+ */
+slang_ir_storage *
+_slang_new_ir_storage(gl_register_file file, GLint index, GLint size)
+{
+   slang_ir_storage *st;
+   st = (slang_ir_storage *) _slang_alloc(sizeof(slang_ir_storage));
+   if (st) {
+      st->File = file;
+      st->Index = index;
+      st->Size = size;
+      st->Swizzle = SWIZZLE_NOOP;
+      st->Parent = NULL;
+      st->IsIndirect = GL_FALSE;
+   }
+   return st;
+}
+
+
+/**
+ * Return a new slang_ir_storage object.
+ */
+slang_ir_storage *
+_slang_new_ir_storage_swz(gl_register_file file, GLint index, GLint size,
+                          GLuint swizzle)
+{
+   slang_ir_storage *st;
+   st = (slang_ir_storage *) _slang_alloc(sizeof(slang_ir_storage));
+   if (st) {
+      st->File = file;
+      st->Index = index;
+      st->Size = size;
+      st->Swizzle = swizzle;
+      st->Parent = NULL;
+      st->IsIndirect = GL_FALSE;
+   }
+   return st;
+}
+
+
+/**
+ * Return a new slang_ir_storage object.
+ */
+slang_ir_storage *
+_slang_new_ir_storage_relative(GLint index, GLint size,
+                               slang_ir_storage *parent)
+{
+   slang_ir_storage *st;
+   st = (slang_ir_storage *) _slang_alloc(sizeof(slang_ir_storage));
+   if (st) {
+      st->File = PROGRAM_UNDEFINED;
+      st->Index = index;
+      st->Size = size;
+      st->Swizzle = SWIZZLE_NOOP;
+      st->Parent = parent;
+      st->IsIndirect = GL_FALSE;
+   }
+   return st;
+}
+
+
+slang_ir_storage *
+_slang_new_ir_storage_indirect(gl_register_file file,
+                               GLint index,
+                               GLint size,
+                               gl_register_file indirectFile,
+                               GLint indirectIndex,
+                               GLuint indirectSwizzle)
+{
+   slang_ir_storage *st;
+   st = (slang_ir_storage *) _slang_alloc(sizeof(slang_ir_storage));
+   if (st) {
+      st->File = file;
+      st->Index = index;
+      st->Size = size;
+      st->Swizzle = SWIZZLE_NOOP;
+      st->IsIndirect = GL_TRUE;
+      st->IndirectFile = indirectFile;
+      st->IndirectIndex = indirectIndex;
+      st->IndirectSwizzle = indirectSwizzle;
+   }
+   return st;
+}
+
+
+/**
+ * Allocate IR storage for a texture sampler.
+ * \param sampNum  the sampler number/index
+ * \param texTarget  one of TEXTURE_x_INDEX values
+ * \param size  number of samplers (in case of sampler array)
+ */
+slang_ir_storage *
+_slang_new_ir_storage_sampler(GLint sampNum, GLuint texTarget, GLint size)
+{
+   slang_ir_storage *st;
+   assert(texTarget < NUM_TEXTURE_TARGETS);
+   st = _slang_new_ir_storage(PROGRAM_SAMPLER, sampNum, size);
+   if (st) {
+      st->TexTarget = texTarget;
+   }
+   return st;
+}
+
+
+
+/* XXX temporary function */
+void
+_slang_copy_ir_storage(slang_ir_storage *dst, const slang_ir_storage *src)
+{
+   *dst = *src;
+   dst->Parent = NULL;
+}
+
+
+
+static const char *
+_slang_ir_name(slang_ir_opcode opcode)
+{
+   return _slang_ir_info(opcode)->IrName;
+}
+
+
+
+#if 0 /* no longer needed with mempool */
+/**
+ * Since many IR nodes might point to the same IR storage info, we need
+ * to be careful when deleting things.
+ * Before deleting an IR tree, traverse it and do refcounting on the
+ * IR storage nodes.  Use the refcount info during delete to free things
+ * properly.
+ */
+static void
+_slang_refcount_storage(slang_ir_node *n)
+{
+   GLuint i;
+   if (!n)
+      return;
+   if (n->Store)
+      n->Store->RefCount++;
+   for (i = 0; i < 3; i++)
+      _slang_refcount_storage(n->Children[i]);
+}
+#endif
+
+
+static void
+_slang_free_ir(slang_ir_node *n)
+{
+   GLuint i;
+   if (!n)
+      return;
+
+#if 0
+   if (n->Store) {
+      n->Store->RefCount--;
+      if (n->Store->RefCount == 0) {
+         _slang_free(n->Store);
+         n->Store = NULL;
+      }
+   }
+#endif
+
+   for (i = 0; i < 3; i++)
+      _slang_free_ir(n->Children[i]);
+   /* Do not free n->List since it's a child elsewhere */
+   _slang_free(n);
+}
+
+
+/**
+ * Recursively free an IR tree.
+ */
+void
+_slang_free_ir_tree(slang_ir_node *n)
+{
+#if 0
+   _slang_refcount_storage(n);
+#endif
+   _slang_free_ir(n);
+}
+
+
+static const char *
+storage_string(const slang_ir_storage *st)
+{
+   static const char *files[] = {
+      "TEMP",
+      "LOCAL_PARAM",
+      "ENV_PARAM",
+      "STATE",
+      "INPUT",
+      "OUTPUT",
+      "NAMED_PARAM",
+      "CONSTANT",
+      "UNIFORM",
+      "VARYING",
+      "WRITE_ONLY",
+      "ADDRESS",
+      "SAMPLER",
+      "UNDEFINED"
+   };
+   static char s[100];
+   assert(Elements(files) == PROGRAM_FILE_MAX);
+#if 0
+   if (st->Size == 1)
+      sprintf(s, "%s[%d]", files[st->File], st->Index);
+   else
+      sprintf(s, "%s[%d..%d]", files[st->File], st->Index,
+              st->Index + st->Size - 1);
+#endif
+   assert(st->File < (GLint) (sizeof(files) / sizeof(files[0])));
+   sprintf(s, "%s[%d]", files[st->File], st->Index);
+   return s;
+}
+
+
+static void
+spaces(int n)
+{
+   while (n-- > 0) {
+      printf(" ");
+   }
+}
+
+
+void
+_slang_print_ir_tree(const slang_ir_node *n, int indent)
+{
+#define IND 0
+
+   if (!n)
+      return;
+#if !IND
+   if (n->Opcode != IR_SEQ)
+#else
+      printf("%3d:", indent);
+#endif
+      spaces(indent);
+
+   switch (n->Opcode) {
+   case IR_SEQ:
+#if IND
+      printf("SEQ  at %p\n", (void*) n);
+#endif
+      assert(n->Children[0]);
+      assert(n->Children[1]);
+      _slang_print_ir_tree(n->Children[0], indent + IND);
+      _slang_print_ir_tree(n->Children[1], indent + IND);
+      break;
+   case IR_SCOPE:
+      printf("NEW SCOPE\n");
+      assert(!n->Children[1]);
+      _slang_print_ir_tree(n->Children[0], indent + 3);
+      break;
+   case IR_COPY:
+      printf("COPY\n");
+      _slang_print_ir_tree(n->Children[0], indent+3);
+      _slang_print_ir_tree(n->Children[1], indent+3);
+      break;
+   case IR_LABEL:
+      printf("LABEL: %s\n", n->Label->Name);
+      break;
+   case IR_COND:
+      printf("COND\n");
+      _slang_print_ir_tree(n->Children[0], indent + 3);
+      break;
+
+   case IR_IF:
+      printf("IF \n");
+      _slang_print_ir_tree(n->Children[0], indent+3);
+      spaces(indent);
+      printf("THEN\n");
+      _slang_print_ir_tree(n->Children[1], indent+3);
+      if (n->Children[2]) {
+         spaces(indent);
+         printf("ELSE\n");
+         _slang_print_ir_tree(n->Children[2], indent+3);
+      }
+      spaces(indent);
+      printf("ENDIF\n");
+      break;
+
+   case IR_BEGIN_SUB:
+      printf("BEGIN_SUB\n");
+      break;
+   case IR_END_SUB:
+      printf("END_SUB\n");
+      break;
+   case IR_RETURN:
+      printf("RETURN\n");
+      break;
+   case IR_CALL:
+      printf("CALL %s\n", n->Label->Name);
+      break;
+
+   case IR_LOOP:
+      printf("LOOP\n");
+      _slang_print_ir_tree(n->Children[0], indent+3);
+      if (n->Children[1]) {
+         spaces(indent);
+         printf("TAIL:\n");
+         _slang_print_ir_tree(n->Children[1], indent+3);
+      }
+      spaces(indent);
+      printf("ENDLOOP\n");
+      break;
+   case IR_CONT:
+      printf("CONT\n");
+      break;
+   case IR_BREAK:
+      printf("BREAK\n");
+      break;
+   case IR_BREAK_IF_TRUE:
+      printf("BREAK_IF_TRUE\n");
+      _slang_print_ir_tree(n->Children[0], indent+3);
+      break;
+   case IR_CONT_IF_TRUE:
+      printf("CONT_IF_TRUE\n");
+      _slang_print_ir_tree(n->Children[0], indent+3);
+      break;
+
+   case IR_VAR:
+      printf("VAR %s%s at %s  store %p\n",
+             (n->Var ? (char *) n->Var->a_name : "TEMP"),
+             _mesa_swizzle_string(n->Store->Swizzle, 0, 0),
+             storage_string(n->Store), (void*) n->Store);
+      break;
+   case IR_VAR_DECL:
+      printf("VAR_DECL %s (%p) at %s  store %p\n",
+             (n->Var ? (char *) n->Var->a_name : "TEMP"),
+             (void*) n->Var, storage_string(n->Store),
+             (void*) n->Store);
+      break;
+   case IR_FIELD:
+      printf("FIELD %s of\n", n->Field);
+      _slang_print_ir_tree(n->Children[0], indent+3);
+      break;
+   case IR_FLOAT:
+      printf("FLOAT %g %g %g %g\n",
+             n->Value[0], n->Value[1], n->Value[2], n->Value[3]);
+      break;
+   case IR_I_TO_F:
+      printf("INT_TO_FLOAT\n");
+      _slang_print_ir_tree(n->Children[0], indent+3);
+      break;
+   case IR_F_TO_I:
+      printf("FLOAT_TO_INT\n");
+      _slang_print_ir_tree(n->Children[0], indent+3);
+      break;
+   case IR_SWIZZLE:
+      printf("SWIZZLE %s of  (store %p) \n",
+             _mesa_swizzle_string(n->Store->Swizzle, 0, 0), (void*) n->Store);
+      _slang_print_ir_tree(n->Children[0], indent + 3);
+      break;
+   default:
+      printf("%s (%p, %p)  (store %p)\n", _slang_ir_name(n->Opcode),
+             (void*) n->Children[0], (void*) n->Children[1], (void*) n->Store);
+      _slang_print_ir_tree(n->Children[0], indent+3);
+      _slang_print_ir_tree(n->Children[1], indent+3);
+   }
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_ir.h b/mesalib/src/mesa/shader/slang/slang_ir.h
new file mode 100644
index 000000000..e796693ed
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_ir.h
@@ -0,0 +1,279 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2005-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_ir.h
+ * Mesa GLSL Intermediate Representation tree types and constants.
+ * \author Brian Paul
+ */
+
+
+#ifndef SLANG_IR_H
+#define SLANG_IR_H
+
+
+#include "main/imports.h"
+#include "slang_compile.h"
+#include "slang_label.h"
+#include "main/mtypes.h"
+
+
+/**
+ * Intermediate Representation opcodes
+ */
+typedef enum
+{
+   IR_NOP = 0,
+   IR_SEQ,     /* sequence (eval left, then right) */
+   IR_SCOPE,   /* new variable scope (one child) */
+
+   IR_LABEL,   /* target of a jump or cjump */
+
+   IR_COND,    /* conditional expression/predicate */
+
+   IR_IF,      /* high-level IF/then/else */
+               /* Children[0] = conditional expression */
+               /* Children[1] = if-true part */
+               /* Children[2] = if-else part, or NULL */
+
+   IR_BEGIN_SUB, /* begin subroutine */
+   IR_END_SUB,   /* end subroutine */
+   IR_RETURN,    /* return from subroutine */
+   IR_CALL,      /* call subroutine */
+
+   IR_LOOP,      /* high-level loop-begin / loop-end */
+                 /* Children[0] = loop body */
+                 /* Children[1] = loop tail code, or NULL */
+
+   IR_CONT,      /* continue loop */
+                 /* n->Parent = ptr to parent IR_LOOP Node */
+   IR_BREAK,     /* break loop */
+
+   IR_BREAK_IF_TRUE, /**< Children[0] = the condition expression */
+   IR_CONT_IF_TRUE,
+
+   IR_COPY,       /**< assignment/copy */
+   IR_MOVE,       /**< assembly MOV instruction */
+
+   /* vector ops: */
+   IR_ADD,        /**< assembly ADD instruction */
+   IR_SUB,
+   IR_MUL,
+   IR_DIV,
+   IR_DOT4,
+   IR_DOT3,
+   IR_DOT2,
+   IR_NRM4,
+   IR_NRM3,
+   IR_CROSS,   /* vec3 cross product */
+   IR_LRP,
+   IR_CLAMP,
+   IR_MIN,
+   IR_MAX,
+   IR_SEQUAL,  /* Set if args are equal (vector) */
+   IR_SNEQUAL, /* Set if args are not equal (vector) */
+   IR_SGE,     /* Set if greater or equal (vector) */
+   IR_SGT,     /* Set if greater than (vector) */
+   IR_SLE,     /* Set if less or equal (vector) */
+   IR_SLT,     /* Set if less than (vector) */
+   IR_POW,     /* x^y */
+   IR_EXP,     /* e^x */
+   IR_EXP2,    /* 2^x */
+   IR_LOG2,    /* log base 2 */
+   IR_RSQ,     /* 1/sqrt() */
+   IR_RCP,     /* reciprocol */
+   IR_FLOOR,
+   IR_FRAC,
+   IR_ABS,     /* absolute value */
+   IR_NEG,     /* negate */
+   IR_DDX,     /* derivative w.r.t. X */
+   IR_DDY,     /* derivative w.r.t. Y */
+   IR_SIN,     /* sine */
+   IR_COS,     /* cosine */
+   IR_NOISE1,  /* noise(x) */
+   IR_NOISE2,  /* noise(x, y) */
+   IR_NOISE3,  /* noise(x, y, z) */
+   IR_NOISE4,  /* noise(x, y, z, w) */
+
+   IR_EQUAL,   /* boolean equality */
+   IR_NOTEQUAL,/* boolean inequality */
+   IR_NOT,     /* boolean not */
+
+   IR_VAR,     /* variable reference */
+   IR_VAR_DECL,/* var declaration */
+
+   IR_ELEMENT, /* array element */
+   IR_FIELD,   /* struct field */
+   IR_SWIZZLE, /* swizzled storage access */
+
+   IR_TEX,     /* texture lookup */
+   IR_TEXB,    /* texture lookup with LOD bias */
+   IR_TEXP,    /* texture lookup with projection */
+
+   IR_TEX_SH,     /* texture lookup, shadow compare */
+   IR_TEXB_SH,    /* texture lookup with LOD bias, shadow compare */
+   IR_TEXP_SH,    /* texture lookup with projection, shadow compare */
+
+   IR_FLOAT,
+   IR_I_TO_F,  /* int[4] to float[4] conversion */
+   IR_F_TO_I,  /* float[4] to int[4] conversion */
+
+   IR_KILL     /* fragment kill/discard */
+} slang_ir_opcode;
+
+
+/**
+ * Describes where data/variables are stored in the various register files.
+ *
+ * In the simple case, the File, Index and Size fields indicate where
+ * a variable is stored.  For example, a vec3 variable may be stored
+ * as (File=PROGRAM_TEMPORARY, Index=6, Size=3).  Or, File[Index].
+ * Or, a program input like color may be stored as
+ * (File=PROGRAM_INPUT,Index=3,Size=4);
+ *
+ * For single-float values, the Swizzle field indicates which component
+ * of the vector contains the float.
+ *
+ * If IsIndirect is set, the storage is accessed through an indirect
+ * register lookup.  The value in question will be located at:
+ *   File[Index + IndirectFile[IndirectIndex]]
+ *
+ * This is primary used for indexing arrays.  For example, consider this
+ * GLSL code:
+ *   uniform int i;
+ *   float a[10];
+ *   float x = a[i];
+ *
+ * here, storage for a[i] would be described by (File=PROGRAM_TEMPORAY,
+ * Index=aPos, IndirectFile=PROGRAM_UNIFORM, IndirectIndex=iPos), which
+ * would mean TEMP[aPos + UNIFORM[iPos]]
+ */
+struct slang_ir_storage_
+{
+   gl_register_file File;  /**< PROGRAM_TEMPORARY, PROGRAM_INPUT, etc */
+   GLint Index;    /**< -1 means unallocated */
+   GLint Size;     /**< number of floats or ints */
+   GLuint Swizzle; /**< Swizzle AND writemask info */
+   GLint RefCount; /**< Used during IR tree delete */
+
+   GLboolean RelAddr; /* we'll remove this eventually */
+
+   GLboolean IsIndirect;
+   gl_register_file IndirectFile;
+   GLint IndirectIndex;
+   GLuint IndirectSwizzle;
+   GLuint TexTarget;  /**< If File==PROGRAM_SAMPLER, one of TEXTURE_x_INDEX */
+
+   /** If Parent is non-null, Index is relative to parent.
+    * The other fields are ignored.
+    */
+   struct slang_ir_storage_ *Parent;
+};
+
+typedef struct slang_ir_storage_ slang_ir_storage;
+
+
+/**
+ * Intermediate Representation (IR) tree node
+ * Basically a binary tree, but IR_LRP and IR_CLAMP have three children.
+ */
+typedef struct slang_ir_node_
+{
+   slang_ir_opcode Opcode;
+   struct slang_ir_node_ *Children[3];
+   slang_ir_storage *Store;  /**< location of result of this operation */
+   GLint InstLocation;  /**< Location of instruction emitted for this node */
+
+   /** special fields depending on Opcode: */
+   const char *Field;  /**< If Opcode == IR_FIELD */
+   GLfloat Value[4];    /**< If Opcode == IR_FLOAT */
+   slang_variable *Var;  /**< If Opcode == IR_VAR or IR_VAR_DECL */
+   struct slang_ir_node_ *List;  /**< For various linked lists */
+   struct slang_ir_node_ *Parent;  /**< Pointer to logical parent (ie. loop) */
+   slang_label *Label;  /**< Used for branches */
+   const char *Comment; /**< If Opcode == IR_COMMENT */
+} slang_ir_node;
+
+
+
+/**
+ * Assembly and IR info
+ */
+typedef struct
+{
+   slang_ir_opcode IrOpcode;
+   const char *IrName;
+   gl_inst_opcode InstOpcode;
+   GLuint ResultSize, NumParams;
+} slang_ir_info;
+
+
+
+extern const slang_ir_info *
+_slang_ir_info(slang_ir_opcode opcode);
+
+
+extern void
+_slang_init_ir_storage(slang_ir_storage *st,
+                       gl_register_file file, GLint index, GLint size,
+                       GLuint swizzle);
+
+extern slang_ir_storage *
+_slang_new_ir_storage(gl_register_file file, GLint index, GLint size);
+
+
+extern slang_ir_storage *
+_slang_new_ir_storage_swz(gl_register_file file, GLint index, GLint size,
+                          GLuint swizzle);
+
+extern slang_ir_storage *
+_slang_new_ir_storage_relative(GLint index, GLint size,
+                               slang_ir_storage *parent);
+
+
+extern slang_ir_storage *
+_slang_new_ir_storage_indirect(gl_register_file file,
+                               GLint index,
+                               GLint size,
+                               gl_register_file indirectFile,
+                               GLint indirectIndex,
+                               GLuint indirectSwizzle);
+
+extern slang_ir_storage *
+_slang_new_ir_storage_sampler(GLint sampNum, GLuint texTarget, GLint size);
+
+
+extern void
+_slang_copy_ir_storage(slang_ir_storage *dst, const slang_ir_storage *src);
+
+
+extern void
+_slang_free_ir_tree(slang_ir_node *n);
+
+
+extern void
+_slang_print_ir_tree(const slang_ir_node *n, int indent);
+
+
+#endif /* SLANG_IR_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_label.c b/mesalib/src/mesa/shader/slang/slang_label.c
new file mode 100644
index 000000000..1ca1ef0c7
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_label.c
@@ -0,0 +1,104 @@
+
+
+/**
+ * Functions for managing instruction labels.
+ * Basically, this is used to manage the problem of forward branches where
+ * we have a branch instruciton but don't know the target address yet.
+ */
+
+
+#include "slang_label.h"
+#include "slang_mem.h"
+
+
+
+slang_label *
+_slang_label_new(const char *name)
+{
+   slang_label *l = (slang_label *) _slang_alloc(sizeof(slang_label));
+   if (l) {
+      l->Name = _slang_strdup(name);
+      l->Location = -1;
+   }
+   return l;
+}
+
+/**
+ * As above, but suffix the name with a unique number.
+ */
+slang_label *
+_slang_label_new_unique(const char *name)
+{
+   static int id = 1;
+   slang_label *l = (slang_label *) _slang_alloc(sizeof(slang_label));
+   if (l) {
+      l->Name = (char *) _slang_alloc(_mesa_strlen(name) + 10);
+      if (!l->Name) {
+         _mesa_free(l);
+         return NULL;
+      }
+      _mesa_sprintf(l->Name, "%s_%d", name, id);
+      id++;
+      l->Location = -1;
+   }
+   return l;
+}
+
+void
+_slang_label_delete(slang_label *l)
+{
+   if (l->Name) {
+      _slang_free(l->Name);
+      l->Name = NULL;
+   }
+   if (l->References) {
+      _slang_free(l->References);
+      l->References = NULL;
+   }
+   _slang_free(l);
+}
+
+
+void
+_slang_label_add_reference(slang_label *l, GLuint inst)
+{
+   const GLuint oldSize = l->NumReferences * sizeof(GLuint);
+   assert(l->Location < 0);
+   l->References = _slang_realloc(l->References,
+                                  oldSize, oldSize + sizeof(GLuint));
+   if (l->References) {
+      l->References[l->NumReferences] = inst;
+      l->NumReferences++;
+   }
+}
+
+
+GLint
+_slang_label_get_location(const slang_label *l)
+{
+   return l->Location;
+}
+
+
+void
+_slang_label_set_location(slang_label *l, GLint location,
+                          struct gl_program *prog)
+{
+   GLuint i;
+
+   assert(l->Location < 0);
+   assert(location >= 0);
+
+   l->Location = location;
+
+   /* for the instructions that were waiting to learn the label's location: */
+   for (i = 0; i < l->NumReferences; i++) {
+      const GLuint j = l->References[i];
+      prog->Instructions[j].BranchTarget = location;
+   }
+
+   if (l->References) {
+      _slang_free(l->References);
+      l->References = NULL;
+   }
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_label.h b/mesalib/src/mesa/shader/slang/slang_label.h
new file mode 100644
index 000000000..87068ae7a
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_label.h
@@ -0,0 +1,45 @@
+#ifndef SLANG_LABEL_H
+#define SLANG_LABEL_H 1
+
+#include "main/imports.h"
+#include "main/mtypes.h"
+#include "shader/prog_instruction.h"
+
+
+struct slang_label_
+{
+   char *Name;
+   GLint Location;
+   /**
+    * List of instruction references (numbered starting at zero) which need
+    * their BranchTarget field filled in with the location eventually
+    * assigned to the label.
+    */
+   GLuint NumReferences;
+   GLuint *References;   /** Array [NumReferences] */
+};
+
+typedef struct slang_label_ slang_label;
+
+
+extern slang_label *
+_slang_label_new(const char *name);
+
+extern slang_label *
+_slang_label_new_unique(const char *name);
+
+extern void
+_slang_label_delete(slang_label *l);
+
+extern void
+_slang_label_add_reference(slang_label *l, GLuint inst);
+
+extern GLint
+_slang_label_get_location(const slang_label *l);
+
+extern void
+_slang_label_set_location(slang_label *l, GLint location,
+                          struct gl_program *prog);
+
+
+#endif /* SLANG_LABEL_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_link.c b/mesalib/src/mesa/shader/slang/slang_link.c
new file mode 100644
index 000000000..8f2b40d5d
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_link.c
@@ -0,0 +1,898 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.3
+ *
+ * Copyright (C) 2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_link.c
+ * GLSL linker
+ * \author Brian Paul
+ */
+
+#include "main/imports.h"
+#include "main/context.h"
+#include "main/hash.h"
+#include "main/macros.h"
+#include "shader/program.h"
+#include "shader/prog_instruction.h"
+#include "shader/prog_parameter.h"
+#include "shader/prog_print.h"
+#include "shader/prog_statevars.h"
+#include "shader/prog_uniform.h"
+#include "shader/shader_api.h"
+#include "slang_builtin.h"
+#include "slang_link.h"
+
+
+/** cast wrapper */
+static struct gl_vertex_program *
+vertex_program(struct gl_program *prog)
+{
+   assert(prog->Target == GL_VERTEX_PROGRAM_ARB);
+   return (struct gl_vertex_program *) prog;
+}
+
+
+/** cast wrapper */
+static struct gl_fragment_program *
+fragment_program(struct gl_program *prog)
+{
+   assert(prog->Target == GL_FRAGMENT_PROGRAM_ARB);
+   return (struct gl_fragment_program *) prog;
+}
+
+
+/**
+ * Record a linking error.
+ */
+static void
+link_error(struct gl_shader_program *shProg, const char *msg)
+{
+   if (shProg->InfoLog) {
+      _mesa_free(shProg->InfoLog);
+   }
+   shProg->InfoLog = _mesa_strdup(msg);
+   shProg->LinkStatus = GL_FALSE;
+}
+
+
+
+/**
+ * Check if the given bit is either set or clear in both bitfields.
+ */
+static GLboolean
+bits_agree(GLbitfield flags1, GLbitfield flags2, GLbitfield bit)
+{
+   return (flags1 & bit) == (flags2 & bit);
+}
+
+
+/**
+ * Linking varying vars involves rearranging varying vars so that the
+ * vertex program's output varyings matches the order of the fragment
+ * program's input varyings.
+ * We'll then rewrite instructions to replace PROGRAM_VARYING with either
+ * PROGRAM_INPUT or PROGRAM_OUTPUT depending on whether it's a vertex or
+ * fragment shader.
+ * This is also where we set program Input/OutputFlags to indicate
+ * which inputs are centroid-sampled, invariant, etc.
+ */
+static GLboolean
+link_varying_vars(GLcontext *ctx,
+                  struct gl_shader_program *shProg, struct gl_program *prog)
+{
+   GLuint *map, i, firstVarying, newFile;
+   GLbitfield *inOutFlags;
+
+   map = (GLuint *) malloc(prog->Varying->NumParameters * sizeof(GLuint));
+   if (!map)
+      return GL_FALSE;
+
+   /* Varying variables are treated like other vertex program outputs
+    * (and like other fragment program inputs).  The position of the
+    * first varying differs for vertex/fragment programs...
+    * Also, replace File=PROGRAM_VARYING with File=PROGRAM_INPUT/OUTPUT.
+    */
+   if (prog->Target == GL_VERTEX_PROGRAM_ARB) {
+      firstVarying = VERT_RESULT_VAR0;
+      newFile = PROGRAM_OUTPUT;
+      inOutFlags = prog->OutputFlags;
+   }
+   else {
+      assert(prog->Target == GL_FRAGMENT_PROGRAM_ARB);
+      firstVarying = FRAG_ATTRIB_VAR0;
+      newFile = PROGRAM_INPUT;
+      inOutFlags = prog->InputFlags;
+   }
+
+   for (i = 0; i < prog->Varying->NumParameters; i++) {
+      /* see if this varying is in the linked varying list */
+      const struct gl_program_parameter *var = prog->Varying->Parameters + i;
+      GLint j = _mesa_lookup_parameter_index(shProg->Varying, -1, var->Name);
+      if (j >= 0) {
+         /* varying is already in list, do some error checking */
+         const struct gl_program_parameter *v =
+            &shProg->Varying->Parameters[j];
+         if (var->Size != v->Size) {
+            link_error(shProg, "mismatched varying variable types");
+            return GL_FALSE;
+         }
+         if (!bits_agree(var->Flags, v->Flags, PROG_PARAM_BIT_CENTROID)) {
+            char msg[100];
+            _mesa_snprintf(msg, sizeof(msg),
+                           "centroid modifier mismatch for '%s'", var->Name);
+            link_error(shProg, msg);
+            return GL_FALSE;
+         }
+         if (!bits_agree(var->Flags, v->Flags, PROG_PARAM_BIT_INVARIANT)) {
+            char msg[100];
+            _mesa_snprintf(msg, sizeof(msg),
+                           "invariant modifier mismatch for '%s'", var->Name);
+            link_error(shProg, msg);
+            return GL_FALSE;
+         }
+      }
+      else {
+         /* not already in linked list */
+         j = _mesa_add_varying(shProg->Varying, var->Name, var->Size,
+                               var->Flags);
+      }
+
+      if (shProg->Varying->NumParameters > ctx->Const.MaxVarying) {
+         link_error(shProg, "Too many varying variables");
+         return GL_FALSE;
+      }
+
+      /* Map varying[i] to varying[j].
+       * Note: the loop here takes care of arrays or large (sz>4) vars.
+       */
+      {
+         GLint sz = var->Size;
+         while (sz > 0) {
+            inOutFlags[firstVarying + j] = var->Flags;
+            /*printf("Link varying from %d to %d\n", i, j);*/
+            map[i++] = j++;
+            sz -= 4;
+         }
+         i--; /* go back one */
+      }
+   }
+
+
+   /* OK, now scan the program/shader instructions looking for varying vars,
+    * replacing the old index with the new index.
+    */
+   for (i = 0; i < prog->NumInstructions; i++) {
+      struct prog_instruction *inst = prog->Instructions + i;
+      GLuint j;
+
+      if (inst->DstReg.File == PROGRAM_VARYING) {
+         inst->DstReg.File = newFile;
+         inst->DstReg.Index = map[ inst->DstReg.Index ] + firstVarying;
+      }
+
+      for (j = 0; j < 3; j++) {
+         if (inst->SrcReg[j].File == PROGRAM_VARYING) {
+            inst->SrcReg[j].File = newFile;
+            inst->SrcReg[j].Index = map[ inst->SrcReg[j].Index ] + firstVarying;
+         }
+      }
+   }
+
+   free(map);
+
+   /* these will get recomputed before linking is completed */
+   prog->InputsRead = 0x0;
+   prog->OutputsWritten = 0x0;
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Build the shProg->Uniforms list.
+ * This is basically a list/index of all uniforms found in either/both of
+ * the vertex and fragment shaders.
+ *
+ * About uniforms:
+ * Each uniform has two indexes, one that points into the vertex
+ * program's parameter array and another that points into the fragment
+ * program's parameter array.  When the user changes a uniform's value
+ * we have to change the value in the vertex and/or fragment program's
+ * parameter array.
+ *
+ * This function will be called twice to set up the two uniform->parameter
+ * mappings.
+ *
+ * If a uniform is only present in the vertex program OR fragment program
+ * then the fragment/vertex parameter index, respectively, will be -1.
+ */
+static GLboolean
+link_uniform_vars(GLcontext *ctx,
+                  struct gl_shader_program *shProg,
+                  struct gl_program *prog,
+                  GLuint *numSamplers)
+{
+   GLuint samplerMap[200]; /* max number of samplers declared, not used */
+   GLuint i;
+
+   for (i = 0; i < prog->Parameters->NumParameters; i++) {
+      const struct gl_program_parameter *p = prog->Parameters->Parameters + i;
+
+      /*
+       * XXX FIX NEEDED HERE
+       * We should also be adding a uniform if p->Type == PROGRAM_STATE_VAR.
+       * For example, modelview matrix, light pos, etc.
+       * Also, we need to update the state-var name-generator code to
+       * generate GLSL-style names, like "gl_LightSource[0].position".
+       * Furthermore, we'll need to fix the state-var's size/datatype info.
+       */
+
+      if ((p->Type == PROGRAM_UNIFORM || p->Type == PROGRAM_SAMPLER)
+          && p->Used) {
+         /* add this uniform, indexing into the target's Parameters list */
+         struct gl_uniform *uniform =
+            _mesa_append_uniform(shProg->Uniforms, p->Name, prog->Target, i);
+         if (uniform)
+            uniform->Initialized = p->Initialized;
+      }
+
+      /* The samplerMap[] table we build here is used to remap/re-index
+       * sampler references by TEX instructions.
+       */
+      if (p->Type == PROGRAM_SAMPLER && p->Used) {
+         /* Allocate a new sampler index */
+         GLuint oldSampNum = (GLuint) prog->Parameters->ParameterValues[i][0];
+         GLuint newSampNum = *numSamplers;
+         if (newSampNum >= ctx->Const.MaxTextureImageUnits) {
+            char s[100];
+            _mesa_sprintf(s, "Too many texture samplers (%u, max is %u)",
+                          newSampNum, ctx->Const.MaxTextureImageUnits);
+            link_error(shProg, s);
+            return GL_FALSE;
+         }
+         /* save old->new mapping in the table */
+         if (oldSampNum < Elements(samplerMap))
+            samplerMap[oldSampNum] = newSampNum;
+         /* update parameter's sampler index */
+         prog->Parameters->ParameterValues[i][0] = (GLfloat) newSampNum;
+         (*numSamplers)++;
+      }
+   }
+
+   /* OK, now scan the program/shader instructions looking for texture
+    * instructions using sampler vars.  Replace old sampler indexes with
+    * new ones.
+    */
+   prog->SamplersUsed = 0x0;
+   for (i = 0; i < prog->NumInstructions; i++) {
+      struct prog_instruction *inst = prog->Instructions + i;
+      if (_mesa_is_tex_instruction(inst->Opcode)) {
+         /* here, inst->TexSrcUnit is really the sampler unit */
+         const GLint oldSampNum = inst->TexSrcUnit;
+
+#if 0
+         printf("====== remap sampler from %d to %d\n",
+                inst->TexSrcUnit, samplerMap[ inst->TexSrcUnit ]);
+#endif
+
+         if (oldSampNum < Elements(samplerMap)) {
+            const GLuint newSampNum = samplerMap[oldSampNum];
+            inst->TexSrcUnit = newSampNum;
+            prog->SamplerTargets[newSampNum] = inst->TexSrcTarget;
+            prog->SamplersUsed |= (1 << newSampNum);
+            if (inst->TexShadow) {
+               prog->ShadowSamplers |= (1 << newSampNum);
+            }
+         }
+      }
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Resolve binding of generic vertex attributes.
+ * For example, if the vertex shader declared "attribute vec4 foobar" we'll
+ * allocate a generic vertex attribute for "foobar" and plug that value into
+ * the vertex program instructions.
+ * But if the user called glBindAttributeLocation(), those bindings will
+ * have priority.
+ */
+static GLboolean
+_slang_resolve_attributes(struct gl_shader_program *shProg,
+                          const struct gl_program *origProg,
+                          struct gl_program *linkedProg)
+{
+   GLint attribMap[MAX_VERTEX_GENERIC_ATTRIBS];
+   GLuint i, j;
+   GLbitfield usedAttributes; /* generics only, not legacy attributes */
+   GLbitfield inputsRead = 0x0;
+
+   assert(origProg != linkedProg);
+   assert(origProg->Target == GL_VERTEX_PROGRAM_ARB);
+   assert(linkedProg->Target == GL_VERTEX_PROGRAM_ARB);
+
+   if (!shProg->Attributes)
+      shProg->Attributes = _mesa_new_parameter_list();
+
+   if (linkedProg->Attributes) {
+      _mesa_free_parameter_list(linkedProg->Attributes);
+   }
+   linkedProg->Attributes = _mesa_new_parameter_list();
+
+
+   /* Build a bitmask indicating which attribute indexes have been
+    * explicitly bound by the user with glBindAttributeLocation().
+    */
+   usedAttributes = 0x0;
+   for (i = 0; i < shProg->Attributes->NumParameters; i++) {
+      GLint attr = shProg->Attributes->Parameters[i].StateIndexes[0];
+      usedAttributes |= (1 << attr);
+   }
+
+   /* If gl_Vertex is used, that actually counts against the limit
+    * on generic vertex attributes.  This avoids the ambiguity of
+    * whether glVertexAttrib4fv(0, v) sets legacy attribute 0 (vert pos)
+    * or generic attribute[0].  If gl_Vertex is used, we want the former.
+    */
+   if (origProg->InputsRead & VERT_BIT_POS) {
+      usedAttributes |= 0x1;
+   }
+
+   /* initialize the generic attribute map entries to -1 */
+   for (i = 0; i < MAX_VERTEX_GENERIC_ATTRIBS; i++) {
+      attribMap[i] = -1;
+   }
+
+   /*
+    * Scan program for generic attribute references
+    */
+   for (i = 0; i < linkedProg->NumInstructions; i++) {
+      struct prog_instruction *inst = linkedProg->Instructions + i;
+      for (j = 0; j < 3; j++) {
+         if (inst->SrcReg[j].File == PROGRAM_INPUT) {
+            inputsRead |= (1 << inst->SrcReg[j].Index);
+         }
+
+         if (inst->SrcReg[j].File == PROGRAM_INPUT &&
+             inst->SrcReg[j].Index >= VERT_ATTRIB_GENERIC0) {
+            /*
+             * OK, we've found a generic vertex attribute reference.
+             */
+            const GLint k = inst->SrcReg[j].Index - VERT_ATTRIB_GENERIC0;
+
+            GLint attr = attribMap[k];
+
+            if (attr < 0) {
+               /* Need to figure out attribute mapping now.
+                */
+               const char *name = origProg->Attributes->Parameters[k].Name;
+               const GLint size = origProg->Attributes->Parameters[k].Size;
+               const GLenum type =origProg->Attributes->Parameters[k].DataType;
+               GLint index;
+
+               /* See if there's a user-defined attribute binding for
+                * this name.
+                */
+               index = _mesa_lookup_parameter_index(shProg->Attributes,
+                                                    -1, name);
+               if (index >= 0) {
+                  /* Found a user-defined binding */
+                  attr = shProg->Attributes->Parameters[index].StateIndexes[0];
+               }
+               else {
+                  /* No user-defined binding, choose our own attribute number.
+                   * Start at 1 since generic attribute 0 always aliases
+                   * glVertex/position.
+                   */
+                  for (attr = 0; attr < MAX_VERTEX_GENERIC_ATTRIBS; attr++) {
+                     if (((1 << attr) & usedAttributes) == 0)
+                        break;
+                  }
+                  if (attr == MAX_VERTEX_GENERIC_ATTRIBS) {
+                     link_error(shProg, "Too many vertex attributes");
+                     return GL_FALSE;
+                  }
+
+                  /* mark this attribute as used */
+                  usedAttributes |= (1 << attr);
+               }
+
+               attribMap[k] = attr;
+
+               /* Save the final name->attrib binding so it can be queried
+                * with glGetAttributeLocation().
+                */
+               _mesa_add_attribute(linkedProg->Attributes, name,
+                                   size, type, attr);
+            }
+
+            assert(attr >= 0);
+
+            /* update the instruction's src reg */
+            inst->SrcReg[j].Index = VERT_ATTRIB_GENERIC0 + attr;
+         }
+      }
+   }
+
+   /* Handle pre-defined attributes here (gl_Vertex, gl_Normal, etc).
+    * When the user queries the active attributes we need to include both
+    * the user-defined attributes and the built-in ones.
+    */
+   for (i = VERT_ATTRIB_POS; i < VERT_ATTRIB_GENERIC0; i++) {
+      if (inputsRead & (1 << i)) {
+         _mesa_add_attribute(linkedProg->Attributes,
+                             _slang_vert_attrib_name(i),
+                             4, /* size in floats */
+                             _slang_vert_attrib_type(i),
+                             -1 /* attrib/input */);
+      }
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Scan program instructions to update the program's NumTemporaries field.
+ * Note: this implemenation relies on the code generator allocating
+ * temps in increasing order (0, 1, 2, ... ).
+ */
+static void
+_slang_count_temporaries(struct gl_program *prog)
+{
+   GLuint i, j;
+   GLint maxIndex = -1;
+
+   for (i = 0; i < prog->NumInstructions; i++) {
+      const struct prog_instruction *inst = prog->Instructions + i;
+      const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode);
+      for (j = 0; j < numSrc; j++) {
+         if (inst->SrcReg[j].File == PROGRAM_TEMPORARY) {
+            if (maxIndex < inst->SrcReg[j].Index)
+               maxIndex = inst->SrcReg[j].Index;
+         }
+         if (inst->DstReg.File == PROGRAM_TEMPORARY) {
+            if (maxIndex < (GLint) inst->DstReg.Index)
+               maxIndex = inst->DstReg.Index;
+         }
+      }
+   }
+
+   prog->NumTemporaries = (GLuint) (maxIndex + 1);
+}
+
+
+/**
+ * Scan program instructions to update the program's InputsRead and
+ * OutputsWritten fields.
+ */
+static void
+_slang_update_inputs_outputs(struct gl_program *prog)
+{
+   GLuint i, j;
+   GLuint maxAddrReg = 0;
+
+   prog->InputsRead = 0x0;
+   prog->OutputsWritten = 0x0;
+
+   for (i = 0; i < prog->NumInstructions; i++) {
+      const struct prog_instruction *inst = prog->Instructions + i;
+      const GLuint numSrc = _mesa_num_inst_src_regs(inst->Opcode);
+      for (j = 0; j < numSrc; j++) {
+         if (inst->SrcReg[j].File == PROGRAM_INPUT) {
+            prog->InputsRead |= 1 << inst->SrcReg[j].Index;
+         }
+         else if (inst->SrcReg[j].File == PROGRAM_ADDRESS) {
+            maxAddrReg = MAX2(maxAddrReg, (GLuint) (inst->SrcReg[j].Index + 1));
+         }
+      }
+
+      if (inst->DstReg.File == PROGRAM_OUTPUT) {
+         prog->OutputsWritten |= 1 << inst->DstReg.Index;
+         if (inst->DstReg.RelAddr) {
+            /* If the output attribute is indexed with relative addressing
+             * we know that it must be a varying or texcoord such as
+             * gl_TexCoord[i] = v;  In this case, mark all the texcoords
+             * or varying outputs as being written.  It's not an error if
+             * a vertex shader writes varying vars that aren't used by the
+             * fragment shader.  But it is an error for a fragment shader
+             * to use varyings that are not written by the vertex shader.
+             */
+            if (prog->Target == GL_VERTEX_PROGRAM_ARB) {
+               if (inst->DstReg.Index == VERT_RESULT_TEX0) {
+                  /* mark all texcoord outputs as written */
+                  const GLbitfield mask =
+                     ((1 << MAX_TEXTURE_COORD_UNITS) - 1) << VERT_RESULT_TEX0;
+                  prog->OutputsWritten |= mask;
+               }
+               else if (inst->DstReg.Index == VERT_RESULT_VAR0) {
+                  /* mark all generic varying outputs as written */
+                  const GLbitfield mask =
+                     ((1 << MAX_VARYING) - 1) << VERT_RESULT_VAR0;
+                  prog->OutputsWritten |= mask;
+               }
+            }
+         }
+      }
+      else if (inst->DstReg.File == PROGRAM_ADDRESS) {
+         maxAddrReg = MAX2(maxAddrReg, inst->DstReg.Index + 1);
+      }
+   }
+   prog->NumAddressRegs = maxAddrReg;
+}
+
+
+
+/**
+ * Remove extra #version directives from the concatenated source string.
+ * Disable the extra ones by converting first two chars to //, a comment.
+ * This is a bit of hack to work around a preprocessor bug that only
+ * allows one #version directive per source.
+ */
+static void
+remove_extra_version_directives(GLchar *source)
+{
+   GLuint verCount = 0;
+   while (1) {
+      char *ver = _mesa_strstr(source, "#version");
+      if (ver) {
+         verCount++;
+         if (verCount > 1) {
+            ver[0] = '/';
+            ver[1] = '/';
+         }
+         source += 8;
+      }
+      else {
+         break;
+      }
+   }
+}
+
+
+
+/**
+ * Return a new shader whose source code is the concatenation of
+ * all the shader sources of the given type.
+ */
+static struct gl_shader *
+concat_shaders(struct gl_shader_program *shProg, GLenum shaderType)
+{
+   struct gl_shader *newShader;
+   const struct gl_shader *firstShader = NULL;
+   GLuint shaderLengths[100];
+   GLchar *source;
+   GLuint totalLen = 0, len = 0;
+   GLuint i;
+
+   /* compute total size of new shader source code */
+   for (i = 0; i < shProg->NumShaders; i++) {
+      const struct gl_shader *shader = shProg->Shaders[i];
+      if (shader->Type == shaderType) {
+         shaderLengths[i] = _mesa_strlen(shader->Source);
+         totalLen += shaderLengths[i];
+         if (!firstShader)
+            firstShader = shader;
+      }
+   }
+
+   if (totalLen == 0)
+      return NULL;
+
+   source = (GLchar *) _mesa_malloc(totalLen + 1);
+   if (!source)
+      return NULL;
+
+   /* concatenate shaders */
+   for (i = 0; i < shProg->NumShaders; i++) {
+      const struct gl_shader *shader = shProg->Shaders[i];
+      if (shader->Type == shaderType) {
+         _mesa_memcpy(source + len, shader->Source, shaderLengths[i]);
+         len += shaderLengths[i];
+      }
+   }
+   source[len] = '\0';
+   /*
+   _mesa_printf("---NEW CONCATENATED SHADER---:\n%s\n------------\n", source);
+   */
+
+   remove_extra_version_directives(source);
+
+   newShader = CALLOC_STRUCT(gl_shader);
+   newShader->Type = shaderType;
+   newShader->Source = source;
+   newShader->Pragmas = firstShader->Pragmas;
+
+   return newShader;
+}
+
+
+/**
+ * Search the shader program's list of shaders to find the one that
+ * defines main().
+ * This will involve shader concatenation and recompilation if needed.
+ */
+static struct gl_shader *
+get_main_shader(GLcontext *ctx,
+                struct gl_shader_program *shProg, GLenum type)
+{
+   struct gl_shader *shader = NULL;
+   GLuint i;
+
+   /*
+    * Look for a shader that defines main() and has no unresolved references.
+    */
+   for (i = 0; i < shProg->NumShaders; i++) {
+      shader = shProg->Shaders[i];
+      if (shader->Type == type &&
+          shader->Main &&
+          !shader->UnresolvedRefs) {
+         /* All set! */
+         return shader;
+      }
+   }
+
+   /*
+    * There must have been unresolved references during the original
+    * compilation.  Try concatenating all the shaders of the given type
+    * and recompile that.
+    */
+   shader = concat_shaders(shProg, type);
+
+   if (shader) {
+      _slang_compile(ctx, shader);
+
+      /* Finally, check if recompiling failed */
+      if (!shader->CompileStatus ||
+          !shader->Main ||
+          shader->UnresolvedRefs) {
+         link_error(shProg, "Unresolved symbols");
+         return NULL;
+      }
+   }
+
+   return shader;
+}
+
+
+/**
+ * Shader linker.  Currently:
+ *
+ * 1. The last attached vertex shader and fragment shader are linked.
+ * 2. Varying vars in the two shaders are combined so their locations
+ *    agree between the vertex and fragment stages.  They're treated as
+ *    vertex program output attribs and as fragment program input attribs.
+ * 3. The vertex and fragment programs are cloned and modified to update
+ *    src/dst register references so they use the new, linked varying
+ *    storage locations.
+ */
+void
+_slang_link(GLcontext *ctx,
+            GLhandleARB programObj,
+            struct gl_shader_program *shProg)
+{
+   const struct gl_vertex_program *vertProg = NULL;
+   const struct gl_fragment_program *fragProg = NULL;
+   GLuint numSamplers = 0;
+   GLuint i;
+
+   _mesa_clear_shader_program_data(ctx, shProg);
+
+   /* Initialize LinkStatus to "success".  Will be cleared if error. */
+   shProg->LinkStatus = GL_TRUE;
+
+   /* check that all programs compiled successfully */
+   for (i = 0; i < shProg->NumShaders; i++) {
+      if (!shProg->Shaders[i]->CompileStatus) {
+         link_error(shProg, "linking with uncompiled shader\n");
+         return;
+      }
+   }
+
+   shProg->Uniforms = _mesa_new_uniform_list();
+   shProg->Varying = _mesa_new_parameter_list();
+
+   /*
+    * Find the vertex and fragment shaders which define main()
+    */
+   {
+      struct gl_shader *vertShader, *fragShader;
+      vertShader = get_main_shader(ctx, shProg, GL_VERTEX_SHADER);
+      fragShader = get_main_shader(ctx, shProg, GL_FRAGMENT_SHADER);
+      if (vertShader)
+         vertProg = vertex_program(vertShader->Program);
+      if (fragShader)
+         fragProg = fragment_program(fragShader->Program);
+      if (!shProg->LinkStatus)
+         return;
+   }
+
+#if FEATURE_es2_glsl
+   /* must have both a vertex and fragment program for ES2 */
+   if (!vertProg) {
+      link_error(shProg, "missing vertex shader\n");
+      return;
+   }
+   if (!fragProg) {
+      link_error(shProg, "missing fragment shader\n");
+      return;
+   }
+#endif
+
+   /*
+    * Make copies of the vertex/fragment programs now since we'll be
+    * changing src/dst registers after merging the uniforms and varying vars.
+    */
+   _mesa_reference_vertprog(ctx, &shProg->VertexProgram, NULL);
+   if (vertProg) {
+      struct gl_vertex_program *linked_vprog =
+         vertex_program(_mesa_clone_program(ctx, &vertProg->Base));
+      shProg->VertexProgram = linked_vprog; /* refcount OK */
+      /* vertex program ID not significant; just set Id for debugging purposes */
+      shProg->VertexProgram->Base.Id = shProg->Name;
+      ASSERT(shProg->VertexProgram->Base.RefCount == 1);
+   }
+
+   _mesa_reference_fragprog(ctx, &shProg->FragmentProgram, NULL);
+   if (fragProg) {
+      struct gl_fragment_program *linked_fprog = 
+         fragment_program(_mesa_clone_program(ctx, &fragProg->Base));
+      shProg->FragmentProgram = linked_fprog; /* refcount OK */
+      /* vertex program ID not significant; just set Id for debugging purposes */
+      shProg->FragmentProgram->Base.Id = shProg->Name;
+      ASSERT(shProg->FragmentProgram->Base.RefCount == 1);
+   }
+
+   /* link varying vars */
+   if (shProg->VertexProgram) {
+      if (!link_varying_vars(ctx, shProg, &shProg->VertexProgram->Base))
+         return;
+   }
+   if (shProg->FragmentProgram) {
+      if (!link_varying_vars(ctx, shProg, &shProg->FragmentProgram->Base))
+         return;
+   }
+
+   /* link uniform vars */
+   if (shProg->VertexProgram) {
+      if (!link_uniform_vars(ctx, shProg, &shProg->VertexProgram->Base,
+                             &numSamplers)) {
+         return;
+      }
+   }
+   if (shProg->FragmentProgram) {
+      if (!link_uniform_vars(ctx, shProg, &shProg->FragmentProgram->Base,
+                             &numSamplers)) {
+         return;
+      }
+   }
+
+   /*_mesa_print_uniforms(shProg->Uniforms);*/
+
+   if (shProg->VertexProgram) {
+      if (!_slang_resolve_attributes(shProg, &vertProg->Base,
+                                     &shProg->VertexProgram->Base)) {
+         return;
+      }
+   }
+
+   if (shProg->VertexProgram) {
+      _slang_update_inputs_outputs(&shProg->VertexProgram->Base);
+      _slang_count_temporaries(&shProg->VertexProgram->Base);
+      if (!(shProg->VertexProgram->Base.OutputsWritten & (1 << VERT_RESULT_HPOS))) {
+         /* the vertex program did not compute a vertex position */
+         link_error(shProg,
+                    "gl_Position was not written by vertex shader\n");
+         return;
+      }
+   }
+   if (shProg->FragmentProgram) {
+      _slang_count_temporaries(&shProg->FragmentProgram->Base);
+      _slang_update_inputs_outputs(&shProg->FragmentProgram->Base);
+   }
+
+   /* Check that all the varying vars needed by the fragment shader are
+    * actually produced by the vertex shader.
+    */
+   if (shProg->FragmentProgram) {
+      const GLbitfield varyingRead
+         = shProg->FragmentProgram->Base.InputsRead >> FRAG_ATTRIB_VAR0;
+      const GLbitfield varyingWritten = shProg->VertexProgram ?
+         shProg->VertexProgram->Base.OutputsWritten >> VERT_RESULT_VAR0 : 0x0;
+      if ((varyingRead & varyingWritten) != varyingRead) {
+         link_error(shProg,
+          "Fragment program using varying vars not written by vertex shader\n");
+         return;
+      }         
+   }
+
+   /* check that gl_FragColor and gl_FragData are not both written to */
+   if (shProg->FragmentProgram) {
+      GLbitfield outputsWritten = shProg->FragmentProgram->Base.OutputsWritten;
+      if ((outputsWritten & ((1 << FRAG_RESULT_COLOR))) &&
+          (outputsWritten >= (1 << FRAG_RESULT_DATA0))) {
+         link_error(shProg, "Fragment program cannot write both gl_FragColor"
+                    " and gl_FragData[].\n");
+         return;
+      }         
+   }
+
+
+   if (fragProg && shProg->FragmentProgram) {
+      /* Compute initial program's TexturesUsed info */
+      _mesa_update_shader_textures_used(&shProg->FragmentProgram->Base);
+
+      /* notify driver that a new fragment program has been compiled/linked */
+      ctx->Driver.ProgramStringNotify(ctx, GL_FRAGMENT_PROGRAM_ARB,
+                                      &shProg->FragmentProgram->Base);
+      if (ctx->Shader.Flags & GLSL_DUMP) {
+         _mesa_printf("Mesa pre-link fragment program:\n");
+         _mesa_print_program(&fragProg->Base);
+         _mesa_print_program_parameters(ctx, &fragProg->Base);
+
+         _mesa_printf("Mesa post-link fragment program:\n");
+         _mesa_print_program(&shProg->FragmentProgram->Base);
+         _mesa_print_program_parameters(ctx, &shProg->FragmentProgram->Base);
+      }
+   }
+
+   if (vertProg && shProg->VertexProgram) {
+      /* Compute initial program's TexturesUsed info */
+      _mesa_update_shader_textures_used(&shProg->VertexProgram->Base);
+
+      /* notify driver that a new vertex program has been compiled/linked */
+      ctx->Driver.ProgramStringNotify(ctx, GL_VERTEX_PROGRAM_ARB,
+                                      &shProg->VertexProgram->Base);
+      if (ctx->Shader.Flags & GLSL_DUMP) {
+         _mesa_printf("Mesa pre-link vertex program:\n");
+         _mesa_print_program(&vertProg->Base);
+         _mesa_print_program_parameters(ctx, &vertProg->Base);
+
+         _mesa_printf("Mesa post-link vertex program:\n");
+         _mesa_print_program(&shProg->VertexProgram->Base);
+         _mesa_print_program_parameters(ctx, &shProg->VertexProgram->Base);
+      }
+   }
+
+   /* Debug: */
+   if (0) {
+      if (shProg->VertexProgram)
+         _mesa_postprocess_program(ctx, &shProg->VertexProgram->Base);
+      if (shProg->FragmentProgram)
+         _mesa_postprocess_program(ctx, &shProg->FragmentProgram->Base);
+   }
+
+   if (ctx->Shader.Flags & GLSL_DUMP) {
+      _mesa_printf("Varying vars:\n");
+      _mesa_print_parameter_list(shProg->Varying);
+      if (shProg->InfoLog) {
+         _mesa_printf("Info Log: %s\n", shProg->InfoLog);
+      }
+   }
+
+   shProg->LinkStatus = (shProg->VertexProgram || shProg->FragmentProgram);
+}
+
diff --git a/mesalib/src/mesa/shader/slang/slang_link.h b/mesalib/src/mesa/shader/slang/slang_link.h
new file mode 100644
index 000000000..2b44d2078
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_link.h
@@ -0,0 +1,37 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.2
+ *
+ * Copyright (C) 2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_LINK_H
+#define SLANG_LINK_H 1
+
+#include "slang_compile.h"
+
+
+extern void
+_slang_link(GLcontext *ctx, GLhandleARB h,
+            struct gl_shader_program *shProg);
+
+
+#endif
+
diff --git a/mesalib/src/mesa/shader/slang/slang_log.c b/mesalib/src/mesa/shader/slang/slang_log.c
new file mode 100644
index 000000000..d7d2b4fbf
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_log.c
@@ -0,0 +1,134 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009  VMware, Inc.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#include "main/imports.h"
+#include "main/context.h"
+#include "slang_log.h"
+#include "slang_utility.h"
+
+
+
+static char *out_of_memory = "Error: Out of memory.\n";
+
+void
+slang_info_log_construct(slang_info_log * log)
+{
+   log->text = NULL;
+   log->dont_free_text = GL_FALSE;
+   log->error_flag = GL_FALSE;
+}
+
+void
+slang_info_log_destruct(slang_info_log * log)
+{
+   if (!log->dont_free_text)
+      _mesa_free(log->text);
+}
+
+static int
+slang_info_log_message(slang_info_log * log, const char *prefix,
+                       const char *msg)
+{
+   GLuint size;
+
+   if (log->dont_free_text)
+      return 0;
+   size = slang_string_length(msg) + 2;
+   if (prefix != NULL)
+      size += slang_string_length(prefix) + 2;
+   if (log->text != NULL) {
+      GLuint old_len = slang_string_length(log->text);
+      log->text = (char *)
+	 _mesa_realloc(log->text, old_len + 1, old_len + size);
+   }
+   else {
+      log->text = (char *) (_mesa_malloc(size));
+      if (log->text != NULL)
+         log->text[0] = '\0';
+   }
+   if (log->text == NULL)
+      return 0;
+   if (prefix != NULL) {
+      slang_string_concat(log->text, prefix);
+      slang_string_concat(log->text, ": ");
+   }
+   slang_string_concat(log->text, msg);
+   slang_string_concat(log->text, "\n");
+
+   return 1;
+}
+
+int
+slang_info_log_print(slang_info_log * log, const char *msg, ...)
+{
+   va_list va;
+   char buf[1024];
+
+   va_start(va, msg);
+   _mesa_vsprintf(buf, msg, va);
+   va_end(va);
+   return slang_info_log_message(log, NULL, buf);
+}
+
+int
+slang_info_log_error(slang_info_log * log, const char *msg, ...)
+{
+   va_list va;
+   char buf[1024];
+
+   va_start(va, msg);
+   _mesa_vsprintf(buf, msg, va);
+   va_end(va);
+   log->error_flag = GL_TRUE;
+   if (slang_info_log_message(log, "Error", buf))
+      return 1;
+   slang_info_log_memory(log);
+   return 0;
+}
+
+int
+slang_info_log_warning(slang_info_log * log, const char *msg, ...)
+{
+   va_list va;
+   char buf[1024];
+
+   va_start(va, msg);
+   _mesa_vsprintf(buf, msg, va);
+   va_end(va);
+   if (slang_info_log_message(log, "Warning", buf))
+      return 1;
+   slang_info_log_memory(log);
+   return 0;
+}
+
+void
+slang_info_log_memory(slang_info_log * log)
+{
+   if (!slang_info_log_message(log, "Error", "Out of memory.")) {
+      log->dont_free_text = GL_TRUE;
+      log->error_flag = GL_TRUE;
+      log->text = out_of_memory;
+   }
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_log.h b/mesalib/src/mesa/shader/slang/slang_log.h
new file mode 100644
index 000000000..dcaba0285
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_log.h
@@ -0,0 +1,57 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef SLANG_LOG_H
+#define SLANG_LOG_H
+
+
+typedef struct slang_info_log_
+{
+   char *text;
+   GLboolean dont_free_text;
+   GLboolean error_flag;
+} slang_info_log;
+
+
+extern void
+slang_info_log_construct(slang_info_log *);
+
+extern void
+slang_info_log_destruct(slang_info_log *);
+
+extern int
+slang_info_log_print(slang_info_log *, const char *, ...);
+
+extern int
+slang_info_log_error(slang_info_log *, const char *, ...);
+
+extern int
+slang_info_log_warning(slang_info_log *, const char *, ...);
+
+extern void
+slang_info_log_memory(slang_info_log *);
+
+
+#endif /* SLANG_LOG_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_mem.c b/mesalib/src/mesa/shader/slang/slang_mem.c
new file mode 100644
index 000000000..9224578ed
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_mem.c
@@ -0,0 +1,243 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_mem.c
+ *
+ * Memory manager for GLSL compiler.  The general idea is to do all
+ * allocations out of a large pool then just free the pool when done
+ * compiling to avoid intricate malloc/free tracking and memory leaks.
+ *
+ * \author Brian Paul
+ */
+
+#include "main/context.h"
+#include "main/macros.h"
+#include "slang_mem.h"
+
+
+#define GRANULARITY 8
+#define ROUND_UP(B)  ( ((B) + (GRANULARITY - 1)) & ~(GRANULARITY - 1) )
+
+
+/** If 1, use conventional malloc/free.  Helpful for debugging */
+#define USE_MALLOC_FREE 0
+
+
+struct slang_mempool_
+{
+   GLuint Size, Used, Count, Largest;
+   char *Data;
+   struct slang_mempool_ *Next;
+};
+
+
+slang_mempool *
+_slang_new_mempool(GLuint initialSize)
+{
+   slang_mempool *pool = (slang_mempool *) _mesa_calloc(sizeof(slang_mempool));
+   if (pool) {
+      pool->Data = (char *) _mesa_calloc(initialSize);
+      /*printf("ALLOC MEMPOOL %d at %p\n", initialSize, pool->Data);*/
+      if (!pool->Data) {
+         _mesa_free(pool);
+         return NULL;
+      }
+      pool->Size = initialSize;
+      pool->Used = 0;
+   }
+   return pool;
+}
+
+
+void
+_slang_delete_mempool(slang_mempool *pool)
+{
+   GLuint total = 0;
+   while (pool) {
+      slang_mempool *next = pool->Next;
+      /*
+      printf("DELETE MEMPOOL %u / %u  count=%u largest=%u\n",
+             pool->Used, pool->Size, pool->Count, pool->Largest);
+      */
+      total += pool->Used;
+      _mesa_free(pool->Data);
+      _mesa_free(pool);
+      pool = next;
+   }
+   /*printf("TOTAL ALLOCATED: %u\n", total);*/
+}
+
+
+#ifdef DEBUG
+static void
+check_zero(const char *addr, GLuint n)
+{
+   GLuint i;
+   for (i = 0; i < n; i++) {
+      assert(addr[i]==0);
+   }
+}
+#endif
+
+
+#ifdef DEBUG
+static GLboolean
+is_valid_address(const slang_mempool *pool, void *addr)
+{
+   while (pool) {
+      if ((char *) addr >= pool->Data &&
+          (char *) addr < pool->Data + pool->Used)
+         return GL_TRUE;
+
+      pool = pool->Next;
+   }
+   return GL_FALSE;
+}
+#endif
+
+
+/**
+ * Alloc 'bytes' from shader mempool.
+ */
+void *
+_slang_alloc(GLuint bytes)
+{
+#if USE_MALLOC_FREE
+   return _mesa_calloc(bytes);
+#else
+   slang_mempool *pool;
+   GET_CURRENT_CONTEXT(ctx);
+   pool = (slang_mempool *) ctx->Shader.MemPool;
+
+   if (bytes == 0)
+      bytes = 1;
+
+   while (pool) {
+      if (pool->Used + bytes <= pool->Size) {
+         /* found room */
+         void *addr = (void *) (pool->Data + pool->Used);
+#ifdef DEBUG
+         check_zero((char*) addr, bytes);
+#endif
+         pool->Used += ROUND_UP(bytes);
+         pool->Largest = MAX2(pool->Largest, bytes);
+         pool->Count++;
+         /*printf("alloc %u  Used %u\n", bytes, pool->Used);*/
+         return addr;
+      }
+      else if (pool->Next) {
+         /* try next block */
+         pool = pool->Next;
+      }
+      else {
+         /* alloc new pool */
+         const GLuint sz = MAX2(bytes, pool->Size);
+         pool->Next = _slang_new_mempool(sz);
+         if (!pool->Next) {
+            /* we're _really_ out of memory */
+            return NULL;
+         }
+         else {
+            pool = pool->Next;
+            pool->Largest = bytes;
+            pool->Count++;
+            pool->Used = ROUND_UP(bytes);
+#ifdef DEBUG
+            check_zero((char*) pool->Data, bytes);
+#endif
+            return (void *) pool->Data;
+         }
+      }
+   }
+   return NULL;
+#endif
+}
+
+
+void *
+_slang_realloc(void *oldBuffer, GLuint oldSize, GLuint newSize)
+{
+#if USE_MALLOC_FREE
+   return _mesa_realloc(oldBuffer, oldSize, newSize);
+#else
+   GET_CURRENT_CONTEXT(ctx);
+   slang_mempool *pool = (slang_mempool *) ctx->Shader.MemPool;
+   (void) pool;
+
+   if (newSize < oldSize) {
+      return oldBuffer;
+   }
+   else {
+      const GLuint copySize = (oldSize < newSize) ? oldSize : newSize;
+      void *newBuffer = _slang_alloc(newSize);
+
+      if (oldBuffer)
+         ASSERT(is_valid_address(pool, oldBuffer));
+
+      if (newBuffer && oldBuffer && copySize > 0)
+         _mesa_memcpy(newBuffer, oldBuffer, copySize);
+
+      return newBuffer;
+   }
+#endif
+}
+
+
+/**
+ * Clone string, storing in current mempool.
+ */
+char *
+_slang_strdup(const char *s)
+{
+   if (s) {
+      size_t l = _mesa_strlen(s);
+      char *s2 = (char *) _slang_alloc(l + 1);
+      if (s2)
+         _mesa_strcpy(s2, s);
+      return s2;
+   }
+   else {
+      return NULL;
+   }
+}
+
+
+/**
+ * Don't actually free memory, but mark it (for debugging).
+ */
+void
+_slang_free(void *addr)
+{
+#if USE_MALLOC_FREE
+   _mesa_free(addr);
+#else
+   if (addr) {
+      GET_CURRENT_CONTEXT(ctx);
+      slang_mempool *pool = (slang_mempool *) ctx->Shader.MemPool;
+      (void) pool;
+      ASSERT(is_valid_address(pool, addr));
+   }
+#endif
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_mem.h b/mesalib/src/mesa/shader/slang/slang_mem.h
new file mode 100644
index 000000000..b5bfae247
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_mem.h
@@ -0,0 +1,55 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+
+#ifndef SLANG_MEM_H
+#define SLANG_MEM_H
+
+
+#include "main/imports.h"
+
+
+typedef struct slang_mempool_ slang_mempool;
+
+
+extern slang_mempool *
+_slang_new_mempool(GLuint initialSize);
+
+extern void
+_slang_delete_mempool(slang_mempool *pool);
+
+extern void *
+_slang_alloc(GLuint bytes);
+
+extern void *
+_slang_realloc(void *oldBuffer, GLuint oldSize, GLuint newSize);
+
+extern char *
+_slang_strdup(const char *s);
+
+extern void
+_slang_free(void *addr);
+
+
+#endif
diff --git a/mesalib/src/mesa/shader/slang/slang_preprocess.c b/mesalib/src/mesa/shader/slang/slang_preprocess.c
new file mode 100644
index 000000000..e9a24cc00
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_preprocess.c
@@ -0,0 +1,1406 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2005-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc.   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_preprocess.c
+ * slang preprocessor
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "shader/grammar/grammar_mesa.h"
+#include "slang_preprocess.h"
+
+LONGSTRING static const char *slang_pp_directives_syn =
+#include "library/slang_pp_directives_syn.h"
+;
+
+LONGSTRING static const char *slang_pp_expression_syn =
+#include "library/slang_pp_expression_syn.h"
+;
+
+LONGSTRING static const char *slang_pp_version_syn =
+#include "library/slang_pp_version_syn.h"
+;
+
+static GLvoid
+grammar_error_to_log (slang_info_log *log)
+{
+   char buf[1024];
+   GLint pos;
+
+   grammar_get_last_error ((byte *) (buf), sizeof (buf), &pos);
+   if (buf[0] == 0) {
+      _mesa_snprintf(buf, sizeof(buf), "Preprocessor error");
+   }
+   slang_info_log_error (log, buf);
+}
+
+GLboolean
+_slang_preprocess_version (const char *text, GLuint *version, GLuint *eaten, slang_info_log *log)
+{
+   grammar id;
+   byte *prod, *I;
+   unsigned int size;
+
+   id = grammar_load_from_text ((const byte *) (slang_pp_version_syn));
+   if (id == 0) {
+      grammar_error_to_log (log);
+      return GL_FALSE;
+   }
+
+   if (!grammar_fast_check (id, (const byte *) (text), &prod, &size, 8)) {
+      grammar_error_to_log (log);
+      grammar_destroy (id);
+      return GL_FALSE;
+   }
+
+   /* there can be multiple #version directives - grab the last one */
+   I = &prod[size - 6];
+   *version = (GLuint) (I[0]) + (GLuint) (I[1]) * 100;
+   *eaten = (GLuint) (I[2]) + ((GLuint) (I[3]) << 8) + ((GLuint) (I[4]) << 16) + ((GLuint) (I[5]) << 24);
+
+   grammar_destroy (id);
+   grammar_alloc_free (prod);
+   return GL_TRUE;
+}
+
+/*
+ * The preprocessor does the following work.
+ * 1. Remove comments. Each comment block is replaced with a single space and if the
+ *    block contains new-lines, they are preserved. This ensures that line numbers
+ *    stay the same and if a comment block delimits two tokens, the are delitmited
+ *    by the space after comment removal.
+ * 2. Remove preprocessor directives from the source string, checking their syntax and
+ *    executing them if appropriate. Again, new-lines are preserved.
+ * 3. Expand macros.
+ * 4. Tokenize the source string by ensuring there is at least one space between every
+ *    two adjacent tokens.
+ */
+
+#define PP_ANNOTATE 0
+
+static GLvoid
+pp_annotate (slang_string *output, const char *fmt, ...)
+{
+#if PP_ANNOTATE
+   va_list va;
+   char buffer[1024];
+
+   va_start (va, fmt);
+   _mesa_vsprintf (buffer, fmt, va);
+   va_end (va);
+   slang_string_pushs (output, buffer, _mesa_strlen (buffer));
+#else
+   (GLvoid) (output);
+   (GLvoid) (fmt);
+#endif
+}
+
+ /*
+ * The expression is executed on a fixed-sized stack. The PUSH macro makes a runtime
+ * check if the stack is not overflown by too complex expressions. In that situation the
+ * GLSL preprocessor should report internal compiler error.
+ * The BINARYDIV makes a runtime check if the divider is not 0. If it is, it reports
+ * compilation error.
+ */
+
+#define EXECUTION_STACK_SIZE 1024
+
+#define PUSH(x)\
+   do {\
+      if (sp == 0) {\
+         slang_info_log_error (elog, "internal compiler error: preprocessor execution stack overflow.");\
+         return GL_FALSE;\
+      }\
+      stack[--sp] = x;\
+   } while (GL_FALSE)
+
+#define POP(x)\
+   do {\
+      assert (sp < EXECUTION_STACK_SIZE);\
+      x = stack[sp++];\
+   } while (GL_FALSE)
+
+#define BINARY(op)\
+   do {\
+      GLint a, b;\
+      POP(b);\
+      POP(a);\
+      PUSH(a op b);\
+   } while (GL_FALSE)
+
+#define BINARYDIV(op)\
+   do {\
+      GLint a, b;\
+      POP(b);\
+      POP(a);\
+      if (b == 0) {\
+         slang_info_log_error (elog, "division by zero in preprocessor expression.");\
+         return GL_FALSE;\
+      }\
+      PUSH(a op b);\
+   } while (GL_FALSE)
+
+#define UNARY(op)\
+   do {\
+      GLint a;\
+      POP(a);\
+      PUSH(op a);\
+   } while (GL_FALSE)
+
+#define OP_END          0
+#define OP_PUSHINT      1
+#define OP_LOGICALOR    2
+#define OP_LOGICALAND   3
+#define OP_OR           4
+#define OP_XOR          5
+#define OP_AND          6
+#define OP_EQUAL        7
+#define OP_NOTEQUAL     8
+#define OP_LESSEQUAL    9
+#define OP_GREATEREQUAL 10
+#define OP_LESS         11
+#define OP_GREATER      12
+#define OP_LEFTSHIFT    13
+#define OP_RIGHTSHIFT   14
+#define OP_ADD          15
+#define OP_SUBTRACT     16
+#define OP_MULTIPLY     17
+#define OP_DIVIDE       18
+#define OP_MODULUS      19
+#define OP_PLUS         20
+#define OP_MINUS        21
+#define OP_NEGATE       22
+#define OP_COMPLEMENT   23
+
+static GLboolean
+execute_expression (slang_string *output, const byte *code, GLuint *pi, GLint *result,
+                    slang_info_log *elog)
+{
+   GLuint i = *pi;
+   GLint stack[EXECUTION_STACK_SIZE];
+   GLuint sp = EXECUTION_STACK_SIZE;
+
+   while (code[i] != OP_END) {
+      switch (code[i++]) {
+         case OP_PUSHINT:
+            i++;
+            PUSH(_mesa_atoi ((const char *) (&code[i])));
+            i += _mesa_strlen ((const char *) (&code[i])) + 1;
+            break;
+         case OP_LOGICALOR:
+            BINARY(||);
+            break;
+         case OP_LOGICALAND:
+            BINARY(&&);
+            break;
+         case OP_OR:
+            BINARY(|);
+            break;
+         case OP_XOR:
+            BINARY(^);
+            break;
+         case OP_AND:
+            BINARY(&);
+            break;
+         case OP_EQUAL:
+            BINARY(==);
+            break;
+         case OP_NOTEQUAL:
+            BINARY(!=);
+            break;
+         case OP_LESSEQUAL:
+            BINARY(<=);
+            break;
+         case OP_GREATEREQUAL:
+            BINARY(>=);
+            break;
+         case OP_LESS:
+            BINARY(<);
+            break;
+         case OP_GREATER:
+            BINARY(>);
+            break;
+         case OP_LEFTSHIFT:
+            BINARY(<<);
+            break;
+         case OP_RIGHTSHIFT:
+            BINARY(>>);
+            break;
+         case OP_ADD:
+            BINARY(+);
+            break;
+         case OP_SUBTRACT:
+            BINARY(-);
+            break;
+         case OP_MULTIPLY:
+            BINARY(*);
+            break;
+         case OP_DIVIDE:
+            BINARYDIV(/);
+            break;
+         case OP_MODULUS:
+            BINARYDIV(%);
+            break;
+         case OP_PLUS:
+            UNARY(+);
+            break;
+         case OP_MINUS:
+            UNARY(-);
+            break;
+         case OP_NEGATE:
+            UNARY(!);
+            break;
+         case OP_COMPLEMENT:
+            UNARY(~);
+            break;
+         default:
+            assert (0);
+      }
+   }
+
+   /* Write-back the index skipping the OP_END. */
+   *pi = i + 1;
+
+   /* There should be exactly one value left on the stack. This is our result. */
+   POP(*result);
+   pp_annotate (output, "%d ", *result);
+   assert (sp == EXECUTION_STACK_SIZE);
+   return GL_TRUE;
+}
+
+/*
+ * Function execute_expressions() executes up to 2 expressions. The second expression is there
+ * for the #line directive which takes 1 or 2 expressions that indicate line and file numbers.
+ * If it fails, it returns 0. If it succeeds, it returns the number of executed expressions.
+ */
+
+#define EXP_END        0
+#define EXP_EXPRESSION 1
+
+static GLuint
+execute_expressions (slang_string *output, grammar eid, const byte *expr, GLint results[2],
+                     slang_info_log *elog)
+{
+   GLint success;
+   byte *code;
+   GLuint size, count = 0;
+
+   success = grammar_fast_check (eid, expr, &code, &size, 64);
+   if (success) {
+      GLuint i = 0;
+
+      while (code[i++] == EXP_EXPRESSION) {
+         assert (count < 2);
+
+         if (!execute_expression (output, code, &i, &results[count], elog)) {
+            count = 0;
+            break;
+         }
+         count++;
+      }
+      grammar_alloc_free (code);
+   }
+   else {
+      slang_info_log_error (elog, "syntax error in preprocessor expression.");\
+   }
+   return count;
+}
+
+/*
+ * The pp_symbol structure is used to hold macro definitions and macro formal parameters. The
+ * pp_symbols strcture is a collection of pp_symbol. It is used both for storing macro formal
+ * parameters and all global macro definitions. Making this unification wastes some memory,
+ * becuse macro formal parameters don't need further lists of symbols. We lose 8 bytes per
+ * formal parameter here, but making this we can use the same code to substitute macro parameters
+ * as well as macros in the source string.
+ */
+
+typedef struct
+{
+   struct pp_symbol_ *symbols;
+   GLuint count;
+} pp_symbols;
+
+static GLvoid
+pp_symbols_init (pp_symbols *self)
+{
+   self->symbols = NULL;
+   self->count = 0;
+}
+
+static GLvoid
+pp_symbols_free (pp_symbols *);
+
+typedef struct pp_symbol_
+{
+   slang_string name;
+   slang_string replacement;
+   pp_symbols parameters;
+} pp_symbol;
+
+static GLvoid
+pp_symbol_init (pp_symbol *self)
+{
+   slang_string_init (&self->name);
+   slang_string_init (&self->replacement);
+   pp_symbols_init (&self->parameters);
+}
+
+static GLvoid
+pp_symbol_free (pp_symbol *self)
+{
+   slang_string_free (&self->name);
+   slang_string_free (&self->replacement);
+   pp_symbols_free (&self->parameters);
+}
+
+static GLvoid
+pp_symbol_reset (pp_symbol *self)
+{
+   /* Leave symbol name intact. */
+   slang_string_reset (&self->replacement);
+   pp_symbols_free (&self->parameters);
+   pp_symbols_init (&self->parameters);
+}
+
+static GLvoid
+pp_symbols_free (pp_symbols *self)
+{
+   GLuint i;
+
+   for (i = 0; i < self->count; i++)
+      pp_symbol_free (&self->symbols[i]);
+   _mesa_free (self->symbols);
+}
+
+static pp_symbol *
+pp_symbols_push (pp_symbols *self)
+{
+   self->symbols = (pp_symbol *) (_mesa_realloc (self->symbols, self->count * sizeof (pp_symbol),
+                                                 (self->count + 1) * sizeof (pp_symbol)));
+   if (self->symbols == NULL)
+      return NULL;
+   pp_symbol_init (&self->symbols[self->count]);
+   return &self->symbols[self->count++];
+}
+
+static GLboolean
+pp_symbols_erase (pp_symbols *self, pp_symbol *symbol)
+{
+   assert (symbol >= self->symbols && symbol < self->symbols + self->count);
+
+   self->count--;
+   pp_symbol_free (symbol);
+   if (symbol < self->symbols + self->count)
+      _mesa_memcpy (symbol, symbol + 1, sizeof (pp_symbol) * (self->symbols + self->count - symbol));
+   self->symbols = (pp_symbol *) (_mesa_realloc (self->symbols, (self->count + 1) * sizeof (pp_symbol),
+                                                 self->count * sizeof (pp_symbol)));
+   return self->symbols != NULL;
+}
+
+static pp_symbol *
+pp_symbols_find (pp_symbols *self, const char *name)
+{
+   GLuint i;
+
+   for (i = 0; i < self->count; i++)
+      if (_mesa_strcmp (name, slang_string_cstr (&self->symbols[i].name)) == 0)
+         return &self->symbols[i];
+   return NULL;
+}
+
+/*
+ * The condition context of a single #if/#else/#endif level. Those can be nested, so there
+ * is a stack of condition contexts.
+ * There is a special global context on the bottom of the stack. It is there to simplify
+ * context handling.
+ */
+
+typedef struct
+{
+   GLboolean current;         /* The condition value of this level. */
+   GLboolean effective;       /* The effective product of current condition, outer level conditions
+                               * and position within #if-#else-#endif sections. */
+   GLboolean else_allowed;    /* TRUE if in #if-#else section, FALSE if in #else-#endif section
+                               * and for global context. */
+   GLboolean endif_required;  /* FALSE for global context only. */
+} pp_cond_ctx;
+
+/* Should be enuff. */
+#define CONDITION_STACK_SIZE 64
+
+typedef struct
+{
+   pp_cond_ctx stack[CONDITION_STACK_SIZE];
+   pp_cond_ctx *top;
+} pp_cond_stack;
+
+static GLboolean
+pp_cond_stack_push (pp_cond_stack *self, slang_info_log *elog)
+{
+   if (self->top == self->stack) {
+      slang_info_log_error (elog, "internal compiler error: preprocessor condition stack overflow.");
+      return GL_FALSE;
+   }
+   self->top--;
+   return GL_TRUE;
+}
+
+static GLvoid
+pp_cond_stack_reevaluate (pp_cond_stack *self)
+{
+   /* There must be at least 2 conditions on the stack - one global and one being evaluated. */
+   assert (self->top <= &self->stack[CONDITION_STACK_SIZE - 2]);
+
+   self->top->effective = self->top->current && self->top[1].effective;
+}
+
+
+/**
+ * Extension enables through #extension directive.
+ * NOTE: Currently, only enable/disable state is stored.
+ */
+typedef struct
+{
+   GLboolean ARB_draw_buffers;
+   GLboolean ARB_texture_rectangle;
+} pp_ext;
+
+
+/**
+ * Disable all extensions. Called at startup and on #extension all: disable.
+ */
+static GLvoid
+pp_ext_disable_all(pp_ext *self)
+{
+   _mesa_memset(self, 0, sizeof(self));
+}
+
+
+/**
+ * Called during preprocessor initialization to set the initial enable/disable
+ * state of extensions.
+ */
+static GLvoid
+pp_ext_init(pp_ext *self, const struct gl_extensions *extensions)
+{
+   pp_ext_disable_all (self);
+   self->ARB_draw_buffers = GL_TRUE;
+   if (extensions->NV_texture_rectangle)
+      self->ARB_texture_rectangle = GL_TRUE;
+}
+
+/**
+ * Called in response to #extension directives to enable/disable
+ * the named extension.
+ */
+static GLboolean
+pp_ext_set(pp_ext *self, const char *name, GLboolean enable)
+{
+   if (_mesa_strcmp (name, "GL_ARB_draw_buffers") == 0)
+      self->ARB_draw_buffers = enable;
+   else if (_mesa_strcmp (name, "GL_ARB_texture_rectangle") == 0)
+      self->ARB_texture_rectangle = enable;
+   else
+      return GL_FALSE;
+   return GL_TRUE;
+}
+
+
+/**
+ * Called in response to #pragma.  For example, "#pragma debug(on)" would
+ * call this function as pp_pragma("debug", "on").
+ * \return GL_TRUE if pragma is valid, GL_FALSE if invalid
+ */
+static GLboolean
+pp_pragma(struct gl_sl_pragmas *pragmas, const char *pragma, const char *param)
+{
+#if 0
+   printf("#pragma %s %s\n", pragma, param);
+#endif
+   if (_mesa_strcmp(pragma, "optimize") == 0) {
+      if (!param)
+         return GL_FALSE; /* missing required param */
+      if (_mesa_strcmp(param, "on") == 0) {
+         if (!pragmas->IgnoreOptimize)
+            pragmas->Optimize = GL_TRUE;
+      }
+      else if (_mesa_strcmp(param, "off") == 0) {
+         if (!pragmas->IgnoreOptimize)
+            pragmas->Optimize = GL_FALSE;
+      }
+      else {
+         return GL_FALSE; /* invalid param */
+      }
+   }
+   else if (_mesa_strcmp(pragma, "debug") == 0) {
+      if (!param)
+         return GL_FALSE; /* missing required param */
+      if (_mesa_strcmp(param, "on") == 0) {
+         if (!pragmas->IgnoreDebug)
+            pragmas->Debug = GL_TRUE;
+      }
+      else if (_mesa_strcmp(param, "off") == 0) {
+         if (!pragmas->IgnoreDebug)
+            pragmas->Debug = GL_FALSE;
+      }
+      else {
+         return GL_FALSE; /* invalid param */
+      }
+   }
+   /* all other pragmas are silently ignored */
+   return GL_TRUE;
+}
+
+
+/**
+ * The state of preprocessor: current line, file and version number, list
+ * of all defined macros and the #if/#endif context.
+ */
+typedef struct
+{
+   GLint line;
+   GLint file;
+   GLint version;
+   pp_symbols symbols;
+   pp_ext ext;
+   slang_info_log *elog;
+   pp_cond_stack cond;
+} pp_state;
+
+static GLvoid
+pp_state_init (pp_state *self, slang_info_log *elog,
+               const struct gl_extensions *extensions)
+{
+   self->line = 0;
+   self->file = 1;
+#if FEATURE_es2_glsl
+   self->version = 100;
+#else
+   self->version = 110;
+#endif
+   pp_symbols_init (&self->symbols);
+   pp_ext_init (&self->ext, extensions);
+   self->elog = elog;
+
+   /* Initialize condition stack and create the global context. */
+   self->cond.top = &self->cond.stack[CONDITION_STACK_SIZE - 1];
+   self->cond.top->current = GL_TRUE;
+   self->cond.top->effective = GL_TRUE;
+   self->cond.top->else_allowed = GL_FALSE;
+   self->cond.top->endif_required = GL_FALSE;
+}
+
+static GLvoid
+pp_state_free (pp_state *self)
+{
+   pp_symbols_free (&self->symbols);
+}
+
+#define IS_FIRST_ID_CHAR(x) (((x) >= 'a' && (x) <= 'z') || ((x) >= 'A' && (x) <= 'Z') || (x) == '_')
+#define IS_NEXT_ID_CHAR(x) (IS_FIRST_ID_CHAR(x) || ((x) >= '0' && (x) <= '9'))
+#define IS_WHITE(x) ((x) == ' ' || (x) == '\n')
+#define IS_NULL(x) ((x) == '\0')
+
+#define SKIP_WHITE(x) do { while (IS_WHITE(*(x))) (x)++; } while (GL_FALSE)
+
+typedef struct
+{
+   slang_string *output;
+   const char *input;
+   pp_state *state;
+} expand_state;
+
+static GLboolean
+expand_defined (expand_state *e, slang_string *buffer)
+{
+   GLboolean in_paren = GL_FALSE;
+   const char *id;
+
+   /* Parse the optional opening parenthesis. */
+   SKIP_WHITE(e->input);
+   if (*e->input == '(') {
+      e->input++;
+      in_paren = GL_TRUE;
+      SKIP_WHITE(e->input);
+   }
+
+   /* Parse operand. */
+   if (!IS_FIRST_ID_CHAR(*e->input)) {
+      slang_info_log_error (e->state->elog,
+                            "preprocess error: identifier expected after operator 'defined'.");
+      return GL_FALSE;
+   }
+   slang_string_reset (buffer);
+   slang_string_pushc (buffer, *e->input++);
+   while (IS_NEXT_ID_CHAR(*e->input))
+      slang_string_pushc (buffer, *e->input++);
+   id = slang_string_cstr (buffer);
+
+   /* Check if the operand is defined. Output 1 if it is defined, output 0 if not. */
+   if (pp_symbols_find (&e->state->symbols, id) == NULL)
+      slang_string_pushs (e->output, " 0 ", 3);
+   else
+      slang_string_pushs (e->output, " 1 ", 3);
+
+   /* Parse the closing parentehesis if the opening one was there. */
+   if (in_paren) {
+      SKIP_WHITE(e->input);
+      if (*e->input != ')') {
+         slang_info_log_error (e->state->elog, "preprocess error: ')' expected.");
+         return GL_FALSE;
+      }
+      e->input++;
+      SKIP_WHITE(e->input);
+   }
+   return GL_TRUE;
+}
+
+static GLboolean
+expand (expand_state *, pp_symbols *);
+
+static GLboolean
+expand_symbol (expand_state *e, pp_symbol *symbol)
+{
+   expand_state es;
+
+   /* If the macro has some parameters, we need to parse them. */
+   if (symbol->parameters.count != 0) {
+      GLuint i;
+
+      /* Parse the opening parenthesis. */
+      SKIP_WHITE(e->input);
+      if (*e->input != '(') {
+         slang_info_log_error (e->state->elog, "preprocess error: '(' expected.");
+         return GL_FALSE;
+      }
+      e->input++;
+      SKIP_WHITE(e->input);
+
+      /* Parse macro actual parameters. This can be anything, separated by a colon.
+       */
+      for (i = 0; i < symbol->parameters.count; i++) {
+         GLuint nested_paren_count = 0; /* track number of nested parentheses */
+
+         if (*e->input == ')') {
+            slang_info_log_error (e->state->elog, "preprocess error: unexpected ')'.");
+            return GL_FALSE;
+         }
+
+         /* Eat all characters up to the comma or closing parentheses. */
+         pp_symbol_reset (&symbol->parameters.symbols[i]);
+         while (!IS_NULL(*e->input)) {
+            /* Exit loop only when all nested parens have been eaten. */
+            if (nested_paren_count == 0 && (*e->input == ',' || *e->input == ')'))
+               break;
+
+            /* Actually count nested parens here. */
+            if (*e->input == '(')
+               nested_paren_count++;
+            else if (*e->input == ')')
+               nested_paren_count--;
+
+            slang_string_pushc (&symbol->parameters.symbols[i].replacement, *e->input++);
+         }
+
+         /* If it was not the last paremeter, skip the comma. Otherwise, skip the
+          * closing parentheses. */
+         if (i + 1 == symbol->parameters.count) {
+            /* This is the last paremeter - skip the closing parentheses. */
+            if (*e->input != ')') {
+               slang_info_log_error (e->state->elog, "preprocess error: ')' expected.");
+               return GL_FALSE;
+            }
+            e->input++;
+            SKIP_WHITE(e->input);
+         }
+         else {
+            /* Skip the separating comma. */
+            if (*e->input != ',') {
+               slang_info_log_error (e->state->elog, "preprocess error: ',' expected.");
+               return GL_FALSE;
+            }
+            e->input++;
+            SKIP_WHITE(e->input);
+         }
+      }
+   }
+
+   /* Expand the macro. Use its parameters as a priority symbol list to expand
+    * macro parameters correctly. */
+   es.output = e->output;
+   es.input = slang_string_cstr (&symbol->replacement);
+   es.state = e->state;
+   slang_string_pushc (e->output, ' ');
+   if (!expand (&es, &symbol->parameters))
+      return GL_FALSE;
+   slang_string_pushc (e->output, ' ');
+   return GL_TRUE;
+}
+
+/*
+ * Function expand() expands source text from <input> to <output>. The expansion is made using
+ * the list passed in <symbols> parameter. It allows us to expand macro formal parameters with
+ * actual parameters. The global list of symbols from pp state is used when doing a recursive
+ * call of expand().
+ */
+
+static GLboolean
+expand (expand_state *e, pp_symbols *symbols)
+{
+   while (!IS_NULL(*e->input)) {
+      if (IS_FIRST_ID_CHAR(*e->input)) {
+         slang_string buffer;
+         const char *id;
+
+         /* Parse the identifier. */
+         slang_string_init (&buffer);
+         slang_string_pushc (&buffer, *e->input++);
+         while (IS_NEXT_ID_CHAR(*e->input))
+            slang_string_pushc (&buffer, *e->input++);
+         id = slang_string_cstr (&buffer);
+
+         /* Now check if the identifier is special in some way. The "defined" identifier is
+          * actually an operator that we must handle here and expand it either to " 0 " or " 1 ".
+          * The other identifiers start with "__" and we expand it to appropriate values
+          * taken from the preprocessor state. */
+         if (_mesa_strcmp (id, "defined") == 0) {
+            if (!expand_defined (e, &buffer))
+               return GL_FALSE;
+         }
+         else if (_mesa_strcmp (id, "__LINE__") == 0) {
+            slang_string_pushc (e->output, ' ');
+            slang_string_pushi (e->output, e->state->line);
+            slang_string_pushc (e->output, ' ');
+         }
+         else if (_mesa_strcmp (id, "__FILE__") == 0) {
+            slang_string_pushc (e->output, ' ');
+            slang_string_pushi (e->output, e->state->file);
+            slang_string_pushc (e->output, ' ');
+         }
+         else if (_mesa_strcmp (id, "__VERSION__") == 0) {
+            slang_string_pushc (e->output, ' ');
+            slang_string_pushi (e->output, e->state->version);
+            slang_string_pushc (e->output, ' ');
+         }
+#if FEATURE_es2_glsl
+         else if (_mesa_strcmp (id, "GL_ES") == 0 ||
+                  _mesa_strcmp (id, "GL_FRAGMENT_PRECISION_HIGH") == 0) {
+            slang_string_pushc (e->output, ' ');
+            slang_string_pushi (e->output, '1');
+            slang_string_pushc (e->output, ' ');
+         }
+#endif
+         else {
+            pp_symbol *symbol;
+
+            /* The list of symbols from <symbols> take precedence over the list from <state>.
+             * Note that in some cases this is the same list so avoid double look-up. */
+            symbol = pp_symbols_find (symbols, id);
+            if (symbol == NULL && symbols != &e->state->symbols)
+               symbol = pp_symbols_find (&e->state->symbols, id);
+
+            /* If the symbol was found, recursively expand its definition. */
+            if (symbol != NULL) {
+               if (!expand_symbol (e, symbol)) {
+                  slang_string_free (&buffer);
+                  return GL_FALSE;
+               }
+            }
+            else {
+               slang_string_push (e->output, &buffer);
+            }
+         }
+         slang_string_free (&buffer);
+      }
+      else if (IS_WHITE(*e->input)) {
+         slang_string_pushc (e->output, *e->input++);
+      }
+      else {
+         while (!IS_WHITE(*e->input) && !IS_NULL(*e->input) && !IS_FIRST_ID_CHAR(*e->input))
+            slang_string_pushc (e->output, *e->input++);
+      }
+   }
+   return GL_TRUE;
+}
+
+static GLboolean
+parse_if (slang_string *output, const byte *prod, GLuint *pi, GLint *result, pp_state *state,
+          grammar eid)
+{
+   const char *text;
+   GLuint len;
+
+   text = (const char *) (&prod[*pi]);
+   len = _mesa_strlen (text);
+
+   if (state->cond.top->effective) {
+      slang_string expr;
+      GLuint count;
+      GLint results[2];
+      expand_state es;
+
+      /* Expand the expression. */
+      slang_string_init (&expr);
+      es.output = &expr;
+      es.input = text;
+      es.state = state;
+      if (!expand (&es, &state->symbols))
+         return GL_FALSE;
+
+      /* Execute the expression. */
+      count = execute_expressions (output, eid, (const byte *) (slang_string_cstr (&expr)),
+                                   results, state->elog);
+      slang_string_free (&expr);
+      if (count != 1)
+         return GL_FALSE;
+      *result = results[0];
+   }
+   else {
+      /* The directive is dead. */
+      *result = 0;
+   }
+
+   *pi += len + 1;
+   return GL_TRUE;
+}
+
+#define ESCAPE_TOKEN 0
+
+#define TOKEN_END       0
+#define TOKEN_DEFINE    1
+#define TOKEN_UNDEF     2
+#define TOKEN_IF        3
+#define TOKEN_ELSE      4
+#define TOKEN_ELIF      5
+#define TOKEN_ENDIF     6
+#define TOKEN_ERROR     7
+#define TOKEN_PRAGMA    8
+#define TOKEN_EXTENSION 9
+#define TOKEN_LINE      10
+
+#define PARAM_END       0
+#define PARAM_PARAMETER 1
+
+#define BEHAVIOR_REQUIRE 1
+#define BEHAVIOR_ENABLE  2
+#define BEHAVIOR_WARN    3
+#define BEHAVIOR_DISABLE 4
+
+#define PRAGMA_NO_PARAM  0
+#define PRAGMA_PARAM     1
+
+
+static GLboolean
+preprocess_source (slang_string *output, const char *source,
+                   grammar pid, grammar eid,
+                   slang_info_log *elog,
+                   const struct gl_extensions *extensions,
+                   struct gl_sl_pragmas *pragmas)
+{
+   static const char *predefined[] = {
+      "__FILE__",
+      "__LINE__",
+      "__VERSION__",
+#if FEATURE_es2_glsl
+      "GL_ES",
+      "GL_FRAGMENT_PRECISION_HIGH",
+#endif
+      NULL
+   };
+   byte *prod;
+   GLuint size, i;
+   pp_state state;
+
+   if (!grammar_fast_check (pid, (const byte *) (source), &prod, &size, 65536)) {
+      grammar_error_to_log (elog);
+      return GL_FALSE;
+   }
+
+   pp_state_init (&state, elog, extensions);
+
+   /* add the predefined symbols to the symbol table */
+   for (i = 0; predefined[i]; i++) {
+      pp_symbol *symbol = NULL;
+      symbol = pp_symbols_push(&state.symbols);
+      assert(symbol);
+      slang_string_pushs(&symbol->name,
+                         predefined[i], _mesa_strlen(predefined[i]));
+   }
+
+   i = 0;
+   while (i < size) {
+      if (prod[i] != ESCAPE_TOKEN) {
+         if (state.cond.top->effective) {
+            slang_string input;
+            expand_state es;
+
+            /* Eat only one line of source code to expand it.
+             * FIXME: This approach has one drawback. If a macro with parameters spans across
+             *        multiple lines, the preprocessor will raise an error. */
+            slang_string_init (&input);
+            while (prod[i] != '\0' && prod[i] != '\n')
+               slang_string_pushc (&input, prod[i++]);
+            if (prod[i] != '\0')
+               slang_string_pushc (&input, prod[i++]);
+
+            /* Increment line number. */
+            state.line++;
+
+            es.output = output;
+            es.input = slang_string_cstr (&input);
+            es.state = &state;
+            if (!expand (&es, &state.symbols))
+               goto error;
+
+            slang_string_free (&input);
+         }
+         else {
+            /* Condition stack is disabled - keep track on line numbers and output only newlines. */
+            if (prod[i] == '\n') {
+               state.line++;
+               /*pp_annotate (output, "%c", prod[i]);*/
+            }
+            else {
+               /*pp_annotate (output, "%c", prod[i]);*/
+            }
+            i++;
+         }
+      }
+      else {
+         const char *id;
+         GLuint idlen;
+         GLubyte token;
+
+         i++;
+         token = prod[i++];
+         switch (token) {
+
+         case TOKEN_END:
+            /* End of source string.
+               * Check if all #ifs have been terminated by matching #endifs.
+               * On condition stack there should be only the global condition context. */
+            if (state.cond.top->endif_required) {
+               slang_info_log_error (elog, "end of source without matching #endif.");
+               return GL_FALSE;
+            }
+            break;
+
+         case TOKEN_DEFINE:
+            {
+               pp_symbol *symbol = NULL;
+
+               /* Parse macro name. */
+               id = (const char *) (&prod[i]);
+               idlen = _mesa_strlen (id);
+               if (state.cond.top->effective) {
+                  pp_annotate (output, "// #define %s(", id);
+
+                  /* If the symbol is already defined, override it. */
+                  symbol = pp_symbols_find (&state.symbols, id);
+                  if (symbol == NULL) {
+                     symbol = pp_symbols_push (&state.symbols);
+                     if (symbol == NULL)
+                        goto error;
+                     slang_string_pushs (&symbol->name, id, idlen);
+                  }
+                  else {
+                     pp_symbol_reset (symbol);
+                  }
+               }
+               i += idlen + 1;
+
+               /* Parse optional macro parameters. */
+               while (prod[i++] != PARAM_END) {
+                  pp_symbol *param;
+
+                  id = (const char *) (&prod[i]);
+                  idlen = _mesa_strlen (id);
+                  if (state.cond.top->effective) {
+                     pp_annotate (output, "%s, ", id);
+                     param = pp_symbols_push (&symbol->parameters);
+                     if (param == NULL)
+                        goto error;
+                     slang_string_pushs (&param->name, id, idlen);
+                  }
+                  i += idlen + 1;
+               }
+
+               /* Parse macro replacement. */
+               id = (const char *) (&prod[i]);
+               idlen = _mesa_strlen (id);
+               if (state.cond.top->effective) {
+                  slang_string replacement;
+                  expand_state es;
+
+                  pp_annotate (output, ") %s", id);
+
+                  slang_string_init(&replacement);
+                  slang_string_pushs(&replacement, id, idlen);
+
+                  /* Expand macro replacement. */
+                  es.output = &symbol->replacement;
+                  es.input = slang_string_cstr(&replacement);
+                  es.state = &state;
+                  if (!expand(&es, &state.symbols)) {
+                     slang_string_free(&replacement);
+                     goto error;
+                  }
+                  slang_string_free(&replacement);
+               }
+               i += idlen + 1;
+            }
+            break;
+
+         case TOKEN_UNDEF:
+            id = (const char *) (&prod[i]);
+            i += _mesa_strlen (id) + 1;
+            if (state.cond.top->effective) {
+               pp_symbol *symbol;
+
+               pp_annotate (output, "// #undef %s", id);
+               /* Try to find symbol with given name and remove it. */
+               symbol = pp_symbols_find (&state.symbols, id);
+               if (symbol != NULL)
+                  if (!pp_symbols_erase (&state.symbols, symbol))
+                     goto error;
+            }
+            break;
+
+         case TOKEN_IF:
+            {
+               GLint result;
+
+               /* Parse #if expression end execute it. */
+               pp_annotate (output, "// #if ");
+               if (!parse_if (output, prod, &i, &result, &state, eid))
+                  goto error;
+
+               /* Push new condition on the stack. */
+               if (!pp_cond_stack_push (&state.cond, state.elog))
+                  goto error;
+               state.cond.top->current = result ? GL_TRUE : GL_FALSE;
+               state.cond.top->else_allowed = GL_TRUE;
+               state.cond.top->endif_required = GL_TRUE;
+               pp_cond_stack_reevaluate (&state.cond);
+            }
+            break;
+
+         case TOKEN_ELSE:
+            /* Check if #else is alloved here. */
+            if (!state.cond.top->else_allowed) {
+               slang_info_log_error (elog, "#else without matching #if.");
+               goto error;
+            }
+
+            /* Negate current condition and reevaluate it. */
+            state.cond.top->current = !state.cond.top->current;
+            state.cond.top->else_allowed = GL_FALSE;
+            pp_cond_stack_reevaluate (&state.cond);
+            if (state.cond.top->effective)
+               pp_annotate (output, "// #else");
+            break;
+
+         case TOKEN_ELIF:
+            /* Check if #elif is alloved here. */
+            if (!state.cond.top->else_allowed) {
+               slang_info_log_error (elog, "#elif without matching #if.");
+               goto error;
+            }
+
+            /* Negate current condition and reevaluate it. */
+            state.cond.top->current = !state.cond.top->current;
+            pp_cond_stack_reevaluate (&state.cond);
+
+            if (state.cond.top->effective)
+               pp_annotate (output, "// #elif ");
+
+            {
+               GLint result;
+
+               /* Parse #elif expression end execute it. */
+               if (!parse_if (output, prod, &i, &result, &state, eid))
+                  goto error;
+
+               /* Update current condition and reevaluate it. */
+               state.cond.top->current = result ? GL_TRUE : GL_FALSE;
+               pp_cond_stack_reevaluate (&state.cond);
+            }
+            break;
+
+         case TOKEN_ENDIF:
+            /* Check if #endif is alloved here. */
+            if (!state.cond.top->endif_required) {
+               slang_info_log_error (elog, "#endif without matching #if.");
+               goto error;
+            }
+
+            /* Pop the condition off the stack. */
+            state.cond.top++;
+            if (state.cond.top->effective)
+               pp_annotate (output, "// #endif");
+            break;
+
+         case TOKEN_EXTENSION:
+            /* Parse the extension name. */
+            id = (const char *) (&prod[i]);
+            i += _mesa_strlen (id) + 1;
+            if (state.cond.top->effective)
+               pp_annotate (output, "// #extension %s: ", id);
+
+            /* Parse and apply extension behavior. */
+            if (state.cond.top->effective) {
+               switch (prod[i++]) {
+
+               case BEHAVIOR_REQUIRE:
+                  pp_annotate (output, "require");
+                  if (!pp_ext_set (&state.ext, id, GL_TRUE)) {
+                     if (_mesa_strcmp (id, "all") == 0) {
+                        slang_info_log_error (elog, "require: bad behavior for #extension all.");
+                        goto error;
+                     }
+                     else {
+                        slang_info_log_error (elog, "%s: required extension is not supported.", id);
+                        goto error;
+                     }
+                  }
+                  break;
+
+               case BEHAVIOR_ENABLE:
+                  pp_annotate (output, "enable");
+                  if (!pp_ext_set (&state.ext, id, GL_TRUE)) {
+                     if (_mesa_strcmp (id, "all") == 0) {
+                        slang_info_log_error (elog, "enable: bad behavior for #extension all.");
+                        goto error;
+                     }
+                     else {
+                        slang_info_log_warning (elog, "%s: enabled extension is not supported.", id);
+                     }
+                  }
+                  break;
+
+               case BEHAVIOR_WARN:
+                  pp_annotate (output, "warn");
+                  if (!pp_ext_set (&state.ext, id, GL_TRUE)) {
+                     if (_mesa_strcmp (id, "all") != 0) {
+                        slang_info_log_warning (elog, "%s: enabled extension is not supported.", id);
+                     }
+                  }
+                  break;
+
+               case BEHAVIOR_DISABLE:
+                  pp_annotate (output, "disable");
+                  if (!pp_ext_set (&state.ext, id, GL_FALSE)) {
+                     if (_mesa_strcmp (id, "all") == 0) {
+                        pp_ext_disable_all (&state.ext);
+                     }
+                     else {
+                        slang_info_log_warning (elog, "%s: disabled extension is not supported.", id);
+                     }
+                  }
+                  break;
+
+               default:
+                  assert (0);
+               }
+            }
+            break;
+
+         case TOKEN_PRAGMA:
+            {
+               GLint have_param;
+               const char *pragma, *param;
+
+               pragma = (const char *) (&prod[i]);
+               i += _mesa_strlen(pragma) + 1;
+               have_param = (prod[i++] == PRAGMA_PARAM);
+               if (have_param) {
+                  param = (const char *) (&prod[i]);
+                  i += _mesa_strlen(param) + 1;
+               }
+               else {
+                  param = NULL;
+               }
+               pp_pragma(pragmas, pragma, param);
+            }
+            break;
+
+         case TOKEN_LINE:
+            id = (const char *) (&prod[i]);
+            i += _mesa_strlen (id) + 1;
+
+            if (state.cond.top->effective) {
+               slang_string buffer;
+               GLuint count;
+               GLint results[2];
+               expand_state es;
+
+               slang_string_init (&buffer);
+               state.line++;
+               es.output = &buffer;
+               es.input = id;
+               es.state = &state;
+               if (!expand (&es, &state.symbols))
+                  goto error;
+
+               pp_annotate (output, "// #line ");
+               count = execute_expressions (output, eid,
+                                             (const byte *) (slang_string_cstr (&buffer)),
+                                             results, state.elog);
+               slang_string_free (&buffer);
+               if (count == 0)
+                  goto error;
+
+               state.line = results[0] - 1;
+               if (count == 2)
+                  state.file = results[1];
+            }
+            break;
+         }
+      }
+   }
+
+   /* Check for missing #endifs. */
+   if (state.cond.top->endif_required) {
+      slang_info_log_error (elog, "#endif expected but end of source found.");
+      goto error;
+   }
+
+   grammar_alloc_free(prod);
+   pp_state_free (&state);
+   return GL_TRUE;
+
+error:
+   grammar_alloc_free(prod);
+   pp_state_free (&state);
+   return GL_FALSE;
+}
+
+
+/**
+ * Remove the continuation characters from the input string.
+ * This is the very first step in preprocessing and is effective
+ * even inside comment blocks.
+ * If there is a whitespace between a backslash and a newline,
+ * this is not considered as a line continuation.
+ * \return GL_TRUE for success, GL_FALSE otherwise.
+ */
+static GLboolean
+_slang_preprocess_backslashes(slang_string *output,
+                              const char *input)
+{
+   while (*input) {
+      if (input[0] == '\\') {
+         /* If a newline follows, eat the backslash and the newline. */
+         if (input[1] == '\r') {
+            if (input[2] == '\n') {
+               input += 3;
+            } else {
+               input += 2;
+            }
+         } else if (input[1] == '\n') {
+            if (input[2] == '\r') {
+               input += 3;
+            } else {
+               input += 2;
+            }
+         } else {
+            /* Leave the backslash alone. */
+            slang_string_pushc(output, *input++);
+         }
+      } else {
+         slang_string_pushc(output, *input++);
+      }
+   }
+   return GL_TRUE;
+}
+
+
+/**
+ * Run preprocessor on source code.
+ * \param extensions  indicates which GL extensions are enabled
+ * \param output  the post-process results
+ * \param input  the input text
+ * \param elog  log to record warnings, errors
+ * \param extensions  out extension settings
+ * \param pragmas  in/out #pragma settings
+ * \return GL_TRUE for success, GL_FALSE for error
+ */
+GLboolean
+_slang_preprocess_directives(slang_string *output,
+                             const char *input,
+                             slang_info_log *elog,
+                             const struct gl_extensions *extensions,
+                             struct gl_sl_pragmas *pragmas)
+{
+   grammar pid, eid;
+   GLboolean success;
+   slang_string without_backslashes;
+
+   pid = grammar_load_from_text ((const byte *) (slang_pp_directives_syn));
+   if (pid == 0) {
+      grammar_error_to_log (elog);
+      return GL_FALSE;
+   }
+   eid = grammar_load_from_text ((const byte *) (slang_pp_expression_syn));
+   if (eid == 0) {
+      grammar_error_to_log (elog);
+      grammar_destroy (pid);
+      return GL_FALSE;
+   }
+
+   slang_string_init(&without_backslashes);
+   success = _slang_preprocess_backslashes(&without_backslashes, input);
+
+   if (0) {
+      _mesa_printf("Pre-processed shader:\n");
+      _mesa_printf("%s", slang_string_cstr(&without_backslashes));
+      _mesa_printf("----------------------\n");
+   }
+
+   if (success) {
+      success = preprocess_source(output,
+                                  slang_string_cstr(&without_backslashes),
+                                  pid,
+                                  eid,
+                                  elog,
+                                  extensions,
+                                  pragmas);
+   }
+
+   slang_string_free(&without_backslashes);
+   grammar_destroy (eid);
+   grammar_destroy (pid);
+
+   if (0) {
+      _mesa_printf("Post-processed shader:\n");
+      _mesa_printf("%s", slang_string_cstr(output));
+      _mesa_printf("----------------------\n");
+   }
+
+   return success;
+}
+
diff --git a/mesalib/src/mesa/shader/slang/slang_preprocess.h b/mesalib/src/mesa/shader/slang/slang_preprocess.h
new file mode 100644
index 000000000..f344820da
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_preprocess.h
@@ -0,0 +1,41 @@
+/*
+ * Mesa 3-D graphics library
+ *
+ * Copyright (C) 2005-2008  Brian Paul   All Rights Reserved.
+ * Copyright (C) 2009 VMware, Inc.   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_PREPROCESS_H
+#define SLANG_PREPROCESS_H
+
+#include "slang_compile.h"
+#include "slang_log.h"
+
+
+extern GLboolean
+_slang_preprocess_version (const char *, GLuint *, GLuint *, slang_info_log *);
+
+extern GLboolean
+_slang_preprocess_directives(slang_string *output, const char *input,
+                             slang_info_log *,
+                             const struct gl_extensions *extensions,
+                             struct gl_sl_pragmas *pragmas);
+
+#endif /* SLANG_PREPROCESS_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_print.c b/mesalib/src/mesa/shader/slang/slang_print.c
new file mode 100644
index 000000000..98c787753
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_print.c
@@ -0,0 +1,883 @@
+
+/**
+ * Dump/print a slang_operation tree
+ */
+
+
+#include "main/imports.h"
+#include "slang_compile.h"
+#include "slang_print.h"
+
+
+static void
+spaces(int n)
+{
+   while (n--)
+      printf(" ");
+}
+
+
+static void
+print_type(const slang_fully_specified_type *t)
+{
+   switch (t->qualifier) {
+   case SLANG_QUAL_NONE:
+      /*printf("");*/
+      break;
+   case SLANG_QUAL_CONST:
+      printf("const ");
+      break;
+   case SLANG_QUAL_ATTRIBUTE:
+      printf("attrib ");
+      break;
+   case SLANG_QUAL_VARYING:
+      printf("varying ");
+      break;
+   case SLANG_QUAL_UNIFORM:
+      printf("uniform ");
+      break;
+   case SLANG_QUAL_OUT:
+      printf("output ");
+      break;
+   case SLANG_QUAL_INOUT:
+      printf("inout ");
+      break;
+   case SLANG_QUAL_FIXEDOUTPUT:
+      printf("fixedoutput");
+      break;
+   case SLANG_QUAL_FIXEDINPUT:
+      printf("fixedinput");
+      break;
+   default:
+      printf("unknown qualifer!");
+   }
+
+   switch (t->specifier.type) {
+   case SLANG_SPEC_VOID:
+      printf("void");
+      break;
+   case SLANG_SPEC_BOOL:
+      printf("bool");
+      break;
+   case SLANG_SPEC_BVEC2:
+      printf("bvec2");
+      break;
+   case SLANG_SPEC_BVEC3:
+      printf("bvec3");
+      break;
+   case SLANG_SPEC_BVEC4:
+      printf("bvec4");
+      break;
+   case SLANG_SPEC_INT:
+      printf("int");
+      break;
+   case SLANG_SPEC_IVEC2:
+      printf("ivec2");
+      break;
+   case SLANG_SPEC_IVEC3:
+      printf("ivec3");
+      break;
+   case SLANG_SPEC_IVEC4:
+      printf("ivec4");
+      break;
+   case SLANG_SPEC_FLOAT:
+      printf("float");
+      break;
+   case SLANG_SPEC_VEC2:
+      printf("vec2");
+      break;
+   case SLANG_SPEC_VEC3:
+      printf("vec3");
+      break;
+   case SLANG_SPEC_VEC4:
+      printf("vec4");
+      break;
+   case SLANG_SPEC_MAT2:
+      printf("mat2");
+      break;
+   case SLANG_SPEC_MAT3:
+      printf("mat3");
+      break;
+   case SLANG_SPEC_MAT4:
+      printf("mat4");
+      break;
+   case SLANG_SPEC_MAT23:
+      printf("mat2x3");
+      break;
+   case SLANG_SPEC_MAT32:
+      printf("mat3x2");
+      break;
+   case SLANG_SPEC_MAT24:
+      printf("mat2x4");
+      break;
+   case SLANG_SPEC_MAT42:
+      printf("mat4x2");
+      break;
+   case SLANG_SPEC_MAT34:
+      printf("mat3x4");
+      break;
+   case SLANG_SPEC_MAT43:
+      printf("mat4x3");
+      break;
+   case SLANG_SPEC_SAMPLER1D:
+      printf("sampler1D");
+      break;
+   case SLANG_SPEC_SAMPLER2D:
+      printf("sampler2D");
+      break;
+   case SLANG_SPEC_SAMPLER3D:
+      printf("sampler3D");
+      break;
+   case SLANG_SPEC_SAMPLERCUBE:
+      printf("samplerCube");
+      break;
+   case SLANG_SPEC_SAMPLER1DSHADOW:
+      printf("sampler1DShadow");
+      break;
+   case SLANG_SPEC_SAMPLER2DSHADOW:
+      printf("sampler2DShadow");
+      break;
+   case SLANG_SPEC_STRUCT:
+      printf("struct");
+      break;
+   case SLANG_SPEC_ARRAY:
+      printf("array");
+      break;
+   default:
+      printf("unknown type");
+   }
+   /*printf("\n");*/
+}
+
+
+static void
+print_variable(const slang_variable *v, int indent)
+{
+   spaces(indent);
+   printf("VAR ");
+   print_type(&v->type);
+   printf(" %s (at %p)", (char *) v->a_name, (void *) v);
+   if (v->initializer) {
+      printf(" :=\n");
+      slang_print_tree(v->initializer, indent + 3);
+   }
+   else {
+      printf(";\n");
+   }
+}
+
+
+static void
+print_binary(const slang_operation *op, const char *oper, int indent)
+{
+   assert(op->num_children == 2);
+#if 0
+   printf("binary at %p locals=%p outer=%p\n",
+          (void *) op,
+          (void *) op->locals,
+          (void *) op->locals->outer_scope);
+#endif
+   slang_print_tree(&op->children[0], indent + 3);
+   spaces(indent);
+   printf("%s at %p locals=%p outer=%p\n",
+          oper, (void *) op, (void *) op->locals,
+          (void *) op->locals->outer_scope);
+   slang_print_tree(&op->children[1], indent + 3);
+}
+
+
+static void
+print_generic2(const slang_operation *op, const char *oper,
+               const char *s, int indent)
+{
+   GLuint i;
+   if (oper) {
+      spaces(indent);
+      printf("%s %s at %p locals=%p outer=%p\n",
+             oper, s, (void *) op, (void *) op->locals, 
+             (void *) op->locals->outer_scope);
+   }
+   for (i = 0; i < op->num_children; i++) {
+      spaces(indent);
+      printf("//child %u of %u:\n", i, op->num_children);
+      slang_print_tree(&op->children[i], indent);
+   }
+}
+
+static void
+print_generic(const slang_operation *op, const char *oper, int indent)
+{
+   print_generic2(op, oper, "", indent);
+}
+
+
+static const slang_variable_scope *
+find_scope(const slang_variable_scope *s, slang_atom name)
+{
+   GLuint i;
+   for (i = 0; i < s->num_variables; i++) {
+      if (s->variables[i]->a_name == name)
+         return s;
+   }
+   if (s->outer_scope)
+      return find_scope(s->outer_scope, name);
+   else
+      return NULL;
+}
+
+static const slang_variable *
+find_var(const slang_variable_scope *s, slang_atom name)
+{
+   GLuint i;
+   for (i = 0; i < s->num_variables; i++) {
+      if (s->variables[i]->a_name == name)
+         return s->variables[i];
+   }
+   if (s->outer_scope)
+      return find_var(s->outer_scope, name);
+   else
+      return NULL;
+}
+
+
+void
+slang_print_tree(const slang_operation *op, int indent)
+{
+   GLuint i;
+
+   switch (op->type) {
+
+   case SLANG_OPER_NONE:
+      spaces(indent);
+      printf("SLANG_OPER_NONE\n");
+      break;
+
+   case SLANG_OPER_BLOCK_NO_NEW_SCOPE:
+      spaces(indent);
+      printf("{ locals=%p  outer=%p\n", (void*)op->locals, (void*)op->locals->outer_scope);
+      print_generic(op, NULL, indent+3);
+      spaces(indent);
+      printf("}\n");
+      break;
+
+   case SLANG_OPER_BLOCK_NEW_SCOPE:
+   case SLANG_OPER_NON_INLINED_CALL:
+      spaces(indent);
+      printf("{{ // new scope  locals=%p outer=%p: ",
+             (void *) op->locals,
+             (void *) op->locals->outer_scope);
+      for (i = 0; i < op->locals->num_variables; i++) {
+         printf("%s ", (char *) op->locals->variables[i]->a_name);
+      }
+      printf("\n");
+      print_generic(op, NULL, indent+3);
+      spaces(indent);
+      printf("}}\n");
+      break;
+
+   case SLANG_OPER_VARIABLE_DECL:
+      assert(op->num_children == 0 || op->num_children == 1);
+      {
+         slang_variable *v;
+         v = _slang_variable_locate(op->locals, op->a_id, GL_TRUE);
+         if (v) {
+            const slang_variable_scope *scope;
+            spaces(indent);
+            printf("DECL (locals=%p outer=%p) ", (void*)op->locals, (void*) op->locals->outer_scope);
+            print_type(&v->type);
+            printf(" %s (%p)", (char *) op->a_id,
+                   (void *) find_var(op->locals, op->a_id));
+
+            scope = find_scope(op->locals, op->a_id);
+            printf(" (in scope %p) ", (void *) scope);
+            assert(scope);
+            if (op->num_children == 1) {
+               printf(" :=\n");
+               slang_print_tree(&op->children[0], indent + 3);
+            }
+            else if (v->initializer) {
+               printf(" := INITIALIZER\n");
+               slang_print_tree(v->initializer, indent + 3);
+            }
+            else {
+               printf(";\n");
+            }
+            /*
+            spaces(indent);
+            printf("TYPE: ");
+            print_type(&v->type);
+            spaces(indent);
+            printf("ADDR: %d  size: %d\n", v->address, v->size);
+            */
+         }
+         else {
+            spaces(indent);
+            printf("DECL %s (anonymous variable!!!!)\n", (char *) op->a_id);
+         }
+      }
+      break;
+
+   case SLANG_OPER_ASM:
+      spaces(indent);
+      printf("ASM: %s at %p locals=%p outer=%p\n",
+             (char *) op->a_id,
+             (void *) op,
+             (void *) op->locals,
+             (void *) op->locals->outer_scope);
+      print_generic(op, "ASM", indent+3);
+      break;
+
+   case SLANG_OPER_BREAK:
+      spaces(indent);
+      printf("BREAK\n");
+      break;
+
+   case SLANG_OPER_CONTINUE:
+      spaces(indent);
+      printf("CONTINUE\n");
+      break;
+
+   case SLANG_OPER_DISCARD:
+      spaces(indent);
+      printf("DISCARD\n");
+      break;
+
+   case SLANG_OPER_RETURN:
+      spaces(indent);
+      printf("RETURN\n");
+      if (op->num_children > 0)
+         slang_print_tree(&op->children[0], indent + 3);
+      break;
+
+   case SLANG_OPER_RETURN_INLINED:
+      spaces(indent);
+      printf("RETURN_INLINED\n");
+      if (op->num_children > 0)
+         slang_print_tree(&op->children[0], indent + 3);
+      break;
+
+   case SLANG_OPER_LABEL:
+      spaces(indent);
+      printf("LABEL %s\n", (char *) op->a_id);
+      break;
+
+   case SLANG_OPER_EXPRESSION:
+      spaces(indent);
+      printf("EXPR:  locals=%p outer=%p\n",
+             (void *) op->locals,
+             (void *) op->locals->outer_scope);
+      /*print_generic(op, "SLANG_OPER_EXPRESSION", indent);*/
+      slang_print_tree(&op->children[0], indent + 3);
+      break;
+
+   case SLANG_OPER_IF:
+      spaces(indent);
+      printf("IF\n");
+      slang_print_tree(&op->children[0], indent + 3);
+      spaces(indent);
+      printf("THEN\n");
+      slang_print_tree(&op->children[1], indent + 3);
+      spaces(indent);
+      printf("ELSE\n");
+      slang_print_tree(&op->children[2], indent + 3);
+      spaces(indent);
+      printf("ENDIF\n");
+      break;
+
+   case SLANG_OPER_WHILE:
+      assert(op->num_children == 2);
+      spaces(indent);
+      printf("WHILE LOOP: locals = %p\n", (void *) op->locals);
+      indent += 3;
+      spaces(indent);
+      printf("WHILE cond:\n");
+      slang_print_tree(&op->children[0], indent + 3);
+      spaces(indent);
+      printf("WHILE body:\n");
+      slang_print_tree(&op->children[1], indent + 3);
+      indent -= 3;
+      spaces(indent);
+      printf("END WHILE LOOP\n");
+      break;
+
+   case SLANG_OPER_DO:
+      spaces(indent);
+      printf("DO LOOP: locals = %p\n", (void *) op->locals);
+      indent += 3;
+      spaces(indent);
+      printf("DO body:\n");
+      slang_print_tree(&op->children[0], indent + 3);
+      spaces(indent);
+      printf("DO cond:\n");
+      slang_print_tree(&op->children[1], indent + 3);
+      indent -= 3;
+      spaces(indent);
+      printf("END DO LOOP\n");
+      break;
+
+   case SLANG_OPER_FOR:
+      spaces(indent);
+      printf("FOR LOOP: locals = %p\n", (void *) op->locals);
+      indent += 3;
+      spaces(indent);
+      printf("FOR init:\n");
+      slang_print_tree(&op->children[0], indent + 3);
+      spaces(indent);
+      printf("FOR condition:\n");
+      slang_print_tree(&op->children[1], indent + 3);
+      spaces(indent);
+      printf("FOR step:\n");
+      slang_print_tree(&op->children[2], indent + 3);
+      spaces(indent);
+      printf("FOR body:\n");
+      slang_print_tree(&op->children[3], indent + 3);
+      indent -= 3;
+      spaces(indent);
+      printf("ENDFOR\n");
+      /*
+      print_generic(op, "FOR", indent + 3);
+      */
+      break;
+
+   case SLANG_OPER_VOID:
+      spaces(indent);
+      printf("(oper-void)\n");
+      break;
+
+   case SLANG_OPER_LITERAL_BOOL:
+      spaces(indent);
+      printf("LITERAL (");
+      for (i = 0; i < op->literal_size; i++)
+         printf("%s ", op->literal[0] ? "TRUE" : "FALSE");
+      printf(")\n");
+
+      break;
+
+   case SLANG_OPER_LITERAL_INT:
+      spaces(indent);
+      printf("LITERAL (");
+      for (i = 0; i < op->literal_size; i++)
+         printf("%d ", (int) op->literal[i]);
+      printf(")\n");
+      break;
+
+   case SLANG_OPER_LITERAL_FLOAT:
+      spaces(indent);
+      printf("LITERAL (");
+      for (i = 0; i < op->literal_size; i++)
+         printf("%f ", op->literal[i]);
+      printf(")\n");
+      break;
+
+   case SLANG_OPER_IDENTIFIER:
+      {
+         const slang_variable_scope *scope;
+         spaces(indent);
+         if (op->var && op->var->a_name) {
+            scope = find_scope(op->locals, op->var->a_name);
+            printf("VAR %s  (in scope %p)\n", (char *) op->var->a_name,
+                   (void *) scope);
+            assert(scope);
+         }
+         else {
+            scope = find_scope(op->locals, op->a_id);
+            printf("VAR' %s  (in scope %p) locals=%p outer=%p\n",
+                   (char *) op->a_id,
+                   (void *) scope,
+                   (void *) op->locals,
+                   (void *) op->locals->outer_scope);
+            /*assert(scope);*/
+         }
+      }
+      break;
+
+   case SLANG_OPER_SEQUENCE:
+      print_generic(op, "COMMA-SEQ", indent+3);
+      break;
+
+   case SLANG_OPER_ASSIGN:
+      spaces(indent);
+      printf("ASSIGNMENT  locals=%p outer=%p\n",
+             (void *) op->locals,
+             (void *) op->locals->outer_scope);
+      print_binary(op, ":=", indent);
+      break;
+
+   case SLANG_OPER_ADDASSIGN:
+      spaces(indent);
+      printf("ASSIGN\n");
+      print_binary(op, "+=", indent);
+      break;
+
+   case SLANG_OPER_SUBASSIGN:
+      spaces(indent);
+      printf("ASSIGN\n");
+      print_binary(op, "-=", indent);
+      break;
+
+   case SLANG_OPER_MULASSIGN:
+      spaces(indent);
+      printf("ASSIGN\n");
+      print_binary(op, "*=", indent);
+      break;
+
+   case SLANG_OPER_DIVASSIGN:
+      spaces(indent);
+      printf("ASSIGN\n");
+      print_binary(op, "/=", indent);
+      break;
+
+	/*SLANG_OPER_MODASSIGN,*/
+	/*SLANG_OPER_LSHASSIGN,*/
+	/*SLANG_OPER_RSHASSIGN,*/
+	/*SLANG_OPER_ORASSIGN,*/
+	/*SLANG_OPER_XORASSIGN,*/
+	/*SLANG_OPER_ANDASSIGN,*/
+   case SLANG_OPER_SELECT:
+      spaces(indent);
+      printf("SLANG_OPER_SELECT n=%d\n", op->num_children);
+      assert(op->num_children == 3);
+      slang_print_tree(&op->children[0], indent+3);
+      spaces(indent);
+      printf("?\n");
+      slang_print_tree(&op->children[1], indent+3);
+      spaces(indent);
+      printf(":\n");
+      slang_print_tree(&op->children[2], indent+3);
+      break;
+
+   case SLANG_OPER_LOGICALOR:
+      print_binary(op, "||", indent);
+      break;
+
+   case SLANG_OPER_LOGICALXOR:
+      print_binary(op, "^^", indent);
+      break;
+
+   case SLANG_OPER_LOGICALAND:
+      print_binary(op, "&&", indent);
+      break;
+
+   /*SLANG_OPER_BITOR*/
+   /*SLANG_OPER_BITXOR*/
+   /*SLANG_OPER_BITAND*/
+   case SLANG_OPER_EQUAL:
+      print_binary(op, "==", indent);
+      break;
+
+   case SLANG_OPER_NOTEQUAL:
+      print_binary(op, "!=", indent);
+      break;
+
+   case SLANG_OPER_LESS:
+      print_binary(op, "<", indent);
+      break;
+
+   case SLANG_OPER_GREATER:
+      print_binary(op, ">", indent);
+      break;
+
+   case SLANG_OPER_LESSEQUAL:
+      print_binary(op, "<=", indent);
+      break;
+
+   case SLANG_OPER_GREATEREQUAL:
+      print_binary(op, ">=", indent);
+      break;
+
+   /*SLANG_OPER_LSHIFT*/
+   /*SLANG_OPER_RSHIFT*/
+   case SLANG_OPER_ADD:
+      print_binary(op, "+", indent);
+      break;
+
+   case SLANG_OPER_SUBTRACT:
+      print_binary(op, "-", indent);
+      break;
+
+   case SLANG_OPER_MULTIPLY:
+      print_binary(op, "*", indent);
+      break;
+
+   case SLANG_OPER_DIVIDE:
+      print_binary(op, "/", indent);
+      break;
+
+   /*SLANG_OPER_MODULUS*/
+   case SLANG_OPER_PREINCREMENT:
+      spaces(indent);
+      printf("PRE++\n");
+      slang_print_tree(&op->children[0], indent+3);
+      break;
+
+   case SLANG_OPER_PREDECREMENT:
+      spaces(indent);
+      printf("PRE--\n");
+      slang_print_tree(&op->children[0], indent+3);
+      break;
+
+   case SLANG_OPER_PLUS:
+      spaces(indent);
+      printf("SLANG_OPER_PLUS\n");
+      break;
+
+   case SLANG_OPER_MINUS:
+      spaces(indent);
+      printf("SLANG_OPER_MINUS\n");
+      break;
+
+   /*SLANG_OPER_COMPLEMENT*/
+   case SLANG_OPER_NOT:
+      spaces(indent);
+      printf("NOT\n");
+      slang_print_tree(&op->children[0], indent+3);
+      break;
+
+   case SLANG_OPER_SUBSCRIPT:
+      spaces(indent);
+      printf("SLANG_OPER_SUBSCRIPT locals=%p outer=%p\n",
+             (void *) op->locals,
+             (void *) op->locals->outer_scope);
+      print_generic(op, NULL, indent+3);
+      break;
+
+   case SLANG_OPER_CALL:
+#if 0
+         slang_function *fun
+            = _slang_function_locate(A->space.funcs, oper->a_id,
+                                     oper->children,
+                                     oper->num_children, &A->space, A->atoms);
+#endif
+      spaces(indent);
+      printf("CALL %s(\n", (char *) op->a_id);
+      for (i = 0; i < op->num_children; i++) {
+         slang_print_tree(&op->children[i], indent+3);
+         if (i + 1 < op->num_children) {
+            spaces(indent + 3);
+            printf(",\n");
+         }
+      }
+      spaces(indent);
+      printf(")\n");
+      break;
+
+   case SLANG_OPER_METHOD:
+      spaces(indent);
+      printf("METHOD CALL %s.%s\n", (char *) op->a_obj, (char *) op->a_id);
+      break;
+
+   case SLANG_OPER_FIELD:
+      spaces(indent);
+      printf("FIELD %s of\n", (char*) op->a_id);
+      slang_print_tree(&op->children[0], indent+3);
+      break;
+
+   case SLANG_OPER_POSTINCREMENT:
+      spaces(indent);
+      printf("POST++\n");
+      slang_print_tree(&op->children[0], indent+3);
+      break;
+
+   case SLANG_OPER_POSTDECREMENT:
+      spaces(indent);
+      printf("POST--\n");
+      slang_print_tree(&op->children[0], indent+3);
+      break;
+
+   default:
+      printf("unknown op->type %d\n", (int) op->type);
+   }
+
+}
+
+
+
+void
+slang_print_function(const slang_function *f, GLboolean body)
+{
+   GLuint i;
+
+#if 0
+   if (_mesa_strcmp((char *) f->header.a_name, "main") != 0)
+     return;
+#endif
+
+   printf("FUNCTION %s ( scope=%p\n",
+          (char *) f->header.a_name, (void *) f->parameters);
+
+   for (i = 0; i < f->param_count; i++) {
+      print_variable(f->parameters->variables[i], 3);
+   }
+
+   printf(") param scope = %p\n", (void *) f->parameters);
+
+   if (body && f->body)
+      slang_print_tree(f->body, 0);
+}
+
+
+
+
+
+const char *
+slang_type_qual_string(slang_type_qualifier q)
+{
+   switch (q) {
+   case SLANG_QUAL_NONE:
+      return "none";
+   case SLANG_QUAL_CONST:
+      return "const";
+   case SLANG_QUAL_ATTRIBUTE:
+      return "attribute";
+   case SLANG_QUAL_VARYING:
+      return "varying";
+   case SLANG_QUAL_UNIFORM:
+      return "uniform";
+   case SLANG_QUAL_OUT:
+      return "out";
+   case SLANG_QUAL_INOUT:
+      return "inout";
+   case SLANG_QUAL_FIXEDOUTPUT:
+      return "fixedoutput";
+   case SLANG_QUAL_FIXEDINPUT:
+      return "fixedinputk";
+   default:
+      return "qual?";
+   }
+}
+
+
+static const char *
+slang_type_string(slang_type_specifier_type t)
+{
+   switch (t) {
+   case SLANG_SPEC_VOID:
+      return "void";
+   case SLANG_SPEC_BOOL:
+      return "bool";
+   case SLANG_SPEC_BVEC2:
+      return "bvec2";
+   case SLANG_SPEC_BVEC3:
+      return "bvec3";
+   case SLANG_SPEC_BVEC4:
+      return "bvec4";
+   case SLANG_SPEC_INT:
+      return "int";
+   case SLANG_SPEC_IVEC2:
+      return "ivec2";
+   case SLANG_SPEC_IVEC3:
+      return "ivec3";
+   case SLANG_SPEC_IVEC4:
+      return "ivec4";
+   case SLANG_SPEC_FLOAT:
+      return "float";
+   case SLANG_SPEC_VEC2:
+      return "vec2";
+   case SLANG_SPEC_VEC3:
+      return "vec3";
+   case SLANG_SPEC_VEC4:
+      return "vec4";
+   case SLANG_SPEC_MAT2:
+      return "mat2";
+   case SLANG_SPEC_MAT3:
+      return "mat3";
+   case SLANG_SPEC_MAT4:
+      return "mat4";
+   case SLANG_SPEC_SAMPLER1D:
+      return "sampler1D";
+   case SLANG_SPEC_SAMPLER2D:
+      return "sampler2D";
+   case SLANG_SPEC_SAMPLER3D:
+      return "sampler3D";
+   case SLANG_SPEC_SAMPLERCUBE:
+      return "samplerCube";
+   case SLANG_SPEC_SAMPLER1DSHADOW:
+      return "sampler1DShadow";
+   case SLANG_SPEC_SAMPLER2DSHADOW:
+      return "sampler2DShadow";
+   case SLANG_SPEC_SAMPLER2DRECT:
+      return "sampler2DRect";
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+      return "sampler2DRectShadow";
+   case SLANG_SPEC_STRUCT:
+      return "struct";
+   case SLANG_SPEC_ARRAY:
+      return "array";
+   default:
+      return "type?";
+   }
+}
+
+
+static const char *
+slang_fq_type_string(const slang_fully_specified_type *t)
+{
+   static char str[1000];
+   sprintf(str, "%s %s", slang_type_qual_string(t->qualifier),
+      slang_type_string(t->specifier.type));
+   return str;
+}
+
+
+void
+slang_print_type(const slang_fully_specified_type *t)
+{
+   printf("%s %s", slang_type_qual_string(t->qualifier),
+      slang_type_string(t->specifier.type));
+}
+
+
+#if 0
+static char *
+slang_var_string(const slang_variable *v)
+{
+   static char str[1000];
+   sprintf(str, "%s : %s",
+           (char *) v->a_name,
+           slang_fq_type_string(&v->type));
+   return str;
+}
+#endif
+
+
+void
+slang_print_variable(const slang_variable *v)
+{
+   printf("Name: %s\n", (char *) v->a_name);
+   printf("Type: %s\n", slang_fq_type_string(&v->type));
+}
+
+
+void
+_slang_print_var_scope(const slang_variable_scope *vars, int indent)
+{
+   GLuint i;
+
+   spaces(indent);
+   printf("Var scope %p  %d vars:\n", (void *) vars, vars->num_variables);
+   for (i = 0; i < vars->num_variables; i++) {
+      spaces(indent + 3);
+      printf("%s (at %p)\n", (char *) vars->variables[i]->a_name, (void*) (vars->variables + i));
+   }
+   spaces(indent + 3);
+   printf("outer_scope = %p\n", (void*) vars->outer_scope);
+
+   if (vars->outer_scope) {
+      /*spaces(indent + 3);*/
+      _slang_print_var_scope(vars->outer_scope, indent + 3);
+   }
+}
+
+
+
+int
+slang_checksum_tree(const slang_operation *op)
+{
+   int s = op->num_children;
+   GLuint i;
+
+   for (i = 0; i < op->num_children; i++) {
+      s += slang_checksum_tree(&op->children[i]);
+   }
+   return s;
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_print.h b/mesalib/src/mesa/shader/slang/slang_print.h
new file mode 100644
index 000000000..46605c806
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_print.h
@@ -0,0 +1,29 @@
+
+
+#ifndef SLANG_PRINT
+#define SLANG_PRINT
+
+extern void
+slang_print_function(const slang_function *f, GLboolean body);
+
+extern void
+slang_print_tree(const slang_operation *op, int indent);
+
+extern const char *
+slang_type_qual_string(slang_type_qualifier q);
+
+extern void
+slang_print_type(const slang_fully_specified_type *t);
+
+extern void
+slang_print_variable(const slang_variable *v);
+
+extern void
+_slang_print_var_scope(const slang_variable_scope *s, int indent);
+
+
+extern int
+slang_checksum_tree(const slang_operation *op);
+
+#endif /* SLANG_PRINT */
+
diff --git a/mesalib/src/mesa/shader/slang/slang_simplify.c b/mesalib/src/mesa/shader/slang/slang_simplify.c
new file mode 100644
index 000000000..b8a21f642
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_simplify.c
@@ -0,0 +1,526 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 2005-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * Functions for constant folding, built-in constant lookup, and function
+ * call casting.
+ */
+
+
+#include "main/imports.h"
+#include "main/macros.h"
+#include "main/get.h"
+#include "slang_compile.h"
+#include "slang_codegen.h"
+#include "slang_simplify.h"
+#include "slang_print.h"
+
+
+#ifndef GL_MAX_FRAGMENT_UNIFORM_VECTORS
+#define GL_MAX_FRAGMENT_UNIFORM_VECTORS     0x8DFD
+#endif
+#ifndef GL_MAX_VERTEX_UNIFORM_VECTORS
+#define GL_MAX_VERTEX_UNIFORM_VECTORS       0x8DFB
+#endif
+#ifndef GL_MAX_VARYING_VECTORS
+#define GL_MAX_VARYING_VECTORS              0x8DFC
+#endif
+
+
+/**
+ * Lookup the value of named constant, such as gl_MaxLights.
+ * \return value of constant, or -1 if unknown
+ */
+GLint
+_slang_lookup_constant(const char *name)
+{
+   struct constant_info {
+      const char *Name;
+      const GLenum Token;
+   };
+   static const struct constant_info info[] = {
+      { "gl_MaxClipPlanes", GL_MAX_CLIP_PLANES },
+      { "gl_MaxCombinedTextureImageUnits", GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS },
+      { "gl_MaxDrawBuffers", GL_MAX_DRAW_BUFFERS },
+      { "gl_MaxFragmentUniformComponents", GL_MAX_FRAGMENT_UNIFORM_COMPONENTS },
+      { "gl_MaxLights", GL_MAX_LIGHTS },
+      { "gl_MaxTextureUnits", GL_MAX_TEXTURE_UNITS },
+      { "gl_MaxTextureCoords", GL_MAX_TEXTURE_COORDS },
+      { "gl_MaxVertexAttribs", GL_MAX_VERTEX_ATTRIBS },
+      { "gl_MaxVertexUniformComponents", GL_MAX_VERTEX_UNIFORM_COMPONENTS },
+      { "gl_MaxVaryingFloats", GL_MAX_VARYING_FLOATS },
+      { "gl_MaxVertexTextureImageUnits", GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS },
+      { "gl_MaxTextureImageUnits", GL_MAX_TEXTURE_IMAGE_UNITS },
+#if FEATURE_es2_glsl
+      { "gl_MaxVertexUniformVectors", GL_MAX_VERTEX_UNIFORM_VECTORS },
+      { "gl_MaxVaryingVectors", GL_MAX_VARYING_VECTORS },
+      { "gl_MaxFragmentUniformVectors", GL_MAX_FRAGMENT_UNIFORM_VECTORS },
+#endif
+      { NULL, 0 }
+   };
+   GLuint i;
+
+   for (i = 0; info[i].Name; i++) {
+      if (strcmp(info[i].Name, name) == 0) {
+         /* found */
+         GLint value = -1;
+         _mesa_GetIntegerv(info[i].Token, &value);
+         ASSERT(value >= 0);  /* sanity check that glGetFloatv worked */
+         return value;
+      }
+   }
+   return -1;
+}
+
+
+static slang_operation_type
+literal_type(slang_operation_type t1, slang_operation_type t2)
+{
+   if (t1 == SLANG_OPER_LITERAL_FLOAT || t2 == SLANG_OPER_LITERAL_FLOAT)
+      return SLANG_OPER_LITERAL_FLOAT;
+   else
+      return SLANG_OPER_LITERAL_INT;
+}
+
+
+/**
+ * Recursively traverse an AST tree, applying simplifications wherever
+ * possible.
+ * At the least, we do constant folding.  We need to do that much so that
+ * compile-time expressions can be evaluated for things like array
+ * declarations.  I.e.:  float foo[3 + 5];
+ */
+void
+_slang_simplify(slang_operation *oper,
+                const slang_name_space * space,
+                slang_atom_pool * atoms)
+{
+   GLboolean isFloat[4];
+   GLboolean isBool[4];
+   GLuint i, n;
+
+   if (oper->type == SLANG_OPER_IDENTIFIER) {
+      /* see if it's a named constant */
+      GLint value = _slang_lookup_constant((char *) oper->a_id);
+      /*printf("value[%s] = %d\n", (char*) oper->a_id, value);*/
+      if (value >= 0) {
+         oper->literal[0] =
+         oper->literal[1] =
+         oper->literal[2] =
+         oper->literal[3] = (GLfloat) value;
+         oper->type = SLANG_OPER_LITERAL_INT;
+         return;
+      }
+      /* look for user-defined constant */
+      {
+         slang_variable *var;
+         var = _slang_variable_locate(oper->locals, oper->a_id, GL_TRUE);
+         if (var) {
+            if (var->type.qualifier == SLANG_QUAL_CONST &&
+                var->initializer &&
+                (var->initializer->type == SLANG_OPER_LITERAL_INT ||
+                 var->initializer->type == SLANG_OPER_LITERAL_FLOAT)) {
+               oper->literal[0] = var->initializer->literal[0];
+               oper->literal[1] = var->initializer->literal[1];
+               oper->literal[2] = var->initializer->literal[2];
+               oper->literal[3] = var->initializer->literal[3];
+               oper->literal_size = var->initializer->literal_size;
+               oper->type = var->initializer->type;
+               /*
+               printf("value[%s] = %f\n",
+                      (char*) oper->a_id, oper->literal[0]);
+               */
+               return;
+            }
+         }
+      }
+   }
+
+   /* first, simplify children */
+   for (i = 0; i < oper->num_children; i++) {
+      _slang_simplify(&oper->children[i], space, atoms);
+   }
+
+   /* examine children */
+   n = MIN2(oper->num_children, 4);
+   for (i = 0; i < n; i++) {
+      isFloat[i] = (oper->children[i].type == SLANG_OPER_LITERAL_FLOAT ||
+                   oper->children[i].type == SLANG_OPER_LITERAL_INT);
+      isBool[i] = (oper->children[i].type == SLANG_OPER_LITERAL_BOOL);
+   }
+                              
+   if (oper->num_children == 2 && isFloat[0] && isFloat[1]) {
+      /* probably simple arithmetic */
+      switch (oper->type) {
+      case SLANG_OPER_ADD:
+         for (i = 0; i < 4; i++) {
+            oper->literal[i]
+               = oper->children[0].literal[i] + oper->children[1].literal[i];
+         }
+         oper->literal_size = oper->children[0].literal_size;
+         oper->type = literal_type(oper->children[0].type, 
+                                   oper->children[1].type);
+         slang_operation_destruct(oper);  /* frees unused children */
+         return;
+      case SLANG_OPER_SUBTRACT:
+         for (i = 0; i < 4; i++) {
+            oper->literal[i]
+               = oper->children[0].literal[i] - oper->children[1].literal[i];
+         }
+         oper->literal_size = oper->children[0].literal_size;
+         oper->type = literal_type(oper->children[0].type, 
+                                   oper->children[1].type);
+         slang_operation_destruct(oper);
+         return;
+      case SLANG_OPER_MULTIPLY:
+         for (i = 0; i < 4; i++) {
+            oper->literal[i]
+               = oper->children[0].literal[i] * oper->children[1].literal[i];
+         }
+         oper->literal_size = oper->children[0].literal_size;
+         oper->type = literal_type(oper->children[0].type, 
+                                   oper->children[1].type);
+         slang_operation_destruct(oper);
+         return;
+      case SLANG_OPER_DIVIDE:
+         for (i = 0; i < 4; i++) {
+            oper->literal[i]
+               = oper->children[0].literal[i] / oper->children[1].literal[i];
+         }
+         oper->literal_size = oper->children[0].literal_size;
+         oper->type = literal_type(oper->children[0].type, 
+                                   oper->children[1].type);
+         slang_operation_destruct(oper);
+         return;
+      default:
+         ; /* nothing */
+      }
+   }
+
+   if (oper->num_children == 1 && isFloat[0]) {
+      switch (oper->type) {
+      case SLANG_OPER_MINUS:
+         for (i = 0; i < 4; i++) {
+            oper->literal[i] = -oper->children[0].literal[i];
+         }
+         oper->literal_size = oper->children[0].literal_size;
+         slang_operation_destruct(oper);
+         oper->type = SLANG_OPER_LITERAL_FLOAT;
+         return;
+      case SLANG_OPER_PLUS:
+         COPY_4V(oper->literal, oper->children[0].literal);
+         oper->literal_size = oper->children[0].literal_size;
+         slang_operation_destruct(oper);
+         oper->type = SLANG_OPER_LITERAL_FLOAT;
+         return;
+      default:
+         ; /* nothing */
+      }
+   }
+
+   if (oper->num_children == 2 && isBool[0] && isBool[1]) {
+      /* simple boolean expression */
+      switch (oper->type) {
+      case SLANG_OPER_LOGICALAND:
+         for (i = 0; i < 4; i++) {
+            const GLint a = oper->children[0].literal[i] ? 1 : 0;
+            const GLint b = oper->children[1].literal[i] ? 1 : 0;
+            oper->literal[i] = (GLfloat) (a && b);
+         }
+         oper->literal_size = oper->children[0].literal_size;
+         slang_operation_destruct(oper);
+         oper->type = SLANG_OPER_LITERAL_BOOL;
+         return;
+      case SLANG_OPER_LOGICALOR:
+         for (i = 0; i < 4; i++) {
+            const GLint a = oper->children[0].literal[i] ? 1 : 0;
+            const GLint b = oper->children[1].literal[i] ? 1 : 0;
+            oper->literal[i] = (GLfloat) (a || b);
+         }
+         oper->literal_size = oper->children[0].literal_size;
+         slang_operation_destruct(oper);
+         oper->type = SLANG_OPER_LITERAL_BOOL;
+         return;
+      case SLANG_OPER_LOGICALXOR:
+         for (i = 0; i < 4; i++) {
+            const GLint a = oper->children[0].literal[i] ? 1 : 0;
+            const GLint b = oper->children[1].literal[i] ? 1 : 0;
+            oper->literal[i] = (GLfloat) (a ^ b);
+         }
+         oper->literal_size = oper->children[0].literal_size;
+         slang_operation_destruct(oper);
+         oper->type = SLANG_OPER_LITERAL_BOOL;
+         return;
+      default:
+         ; /* nothing */
+      }
+   }
+
+   if (oper->num_children == 4
+       && isFloat[0] && isFloat[1] && isFloat[2] && isFloat[3]) {
+      /* vec4(flt, flt, flt, flt) constructor */
+      if (oper->type == SLANG_OPER_CALL) {
+         if (strcmp((char *) oper->a_id, "vec4") == 0) {
+            oper->literal[0] = oper->children[0].literal[0];
+            oper->literal[1] = oper->children[1].literal[0];
+            oper->literal[2] = oper->children[2].literal[0];
+            oper->literal[3] = oper->children[3].literal[0];
+            oper->literal_size = 4;
+            slang_operation_destruct(oper);
+            oper->type = SLANG_OPER_LITERAL_FLOAT;
+            return;
+         }
+      }
+   }
+
+   if (oper->num_children == 3 && isFloat[0] && isFloat[1] && isFloat[2]) {
+      /* vec3(flt, flt, flt) constructor */
+      if (oper->type == SLANG_OPER_CALL) {
+         if (strcmp((char *) oper->a_id, "vec3") == 0) {
+            oper->literal[0] = oper->children[0].literal[0];
+            oper->literal[1] = oper->children[1].literal[0];
+            oper->literal[2] = oper->children[2].literal[0];
+            oper->literal[3] = oper->literal[2];
+            oper->literal_size = 3;
+            slang_operation_destruct(oper);
+            oper->type = SLANG_OPER_LITERAL_FLOAT;
+            return;
+         }
+      }
+   }
+
+   if (oper->num_children == 2 && isFloat[0] && isFloat[1]) {
+      /* vec2(flt, flt) constructor */
+      if (oper->type == SLANG_OPER_CALL) {
+         if (strcmp((char *) oper->a_id, "vec2") == 0) {
+            oper->literal[0] = oper->children[0].literal[0];
+            oper->literal[1] = oper->children[1].literal[0];
+            oper->literal[2] = oper->literal[1];
+            oper->literal[3] = oper->literal[1];
+            oper->literal_size = 2;
+            slang_operation_destruct(oper); /* XXX oper->locals goes NULL! */
+            oper->type = SLANG_OPER_LITERAL_FLOAT;
+            assert(oper->num_children == 0);
+            return;
+         }
+      }
+   }
+
+   if (oper->num_children == 1 && isFloat[0]) {
+      /* vec2/3/4(flt, flt) constructor */
+      if (oper->type == SLANG_OPER_CALL) {
+         const char *func = (const char *) oper->a_id;
+         if (strncmp(func, "vec", 3) == 0 && func[3] >= '2' && func[3] <= '4') {
+            oper->literal[0] =
+            oper->literal[1] =
+            oper->literal[2] =
+            oper->literal[3] = oper->children[0].literal[0];
+            oper->literal_size = func[3] - '0';
+            assert(oper->literal_size >= 2);
+            assert(oper->literal_size <= 4);
+            slang_operation_destruct(oper); /* XXX oper->locals goes NULL! */
+            oper->type = SLANG_OPER_LITERAL_FLOAT;
+            assert(oper->num_children == 0);
+            return;
+         }
+      }
+   }
+}
+
+
+
+/**
+ * Insert casts to try to adapt actual parameters to formal parameters for a
+ * function call when an exact match for the parameter types is not found.
+ * Example:
+ *   void foo(int i, bool b) {}
+ *   x = foo(3.15, 9);
+ * Gets translated into:
+ *   x = foo(int(3.15), bool(9))
+ */
+GLboolean
+_slang_cast_func_params(slang_operation *callOper, const slang_function *fun,
+                        const slang_name_space * space,
+                        slang_atom_pool * atoms, slang_info_log *log)
+{
+   const GLboolean haveRetValue = _slang_function_has_return_value(fun);
+   const int numParams = fun->param_count - haveRetValue;
+   int i;
+   int dbg = 0;
+
+   if (dbg)
+      printf("Adapt call of %d args to func %s (%d params)\n",
+             callOper->num_children, (char*) fun->header.a_name, numParams);
+
+   for (i = 0; i < numParams; i++) {
+      slang_typeinfo argType;
+      slang_variable *paramVar = fun->parameters->variables[i];
+
+      /* Get type of arg[i] */
+      if (!slang_typeinfo_construct(&argType))
+         return GL_FALSE;
+      if (!_slang_typeof_operation(&callOper->children[i], space,
+                                    &argType, atoms, log)) {
+         slang_typeinfo_destruct(&argType);
+         return GL_FALSE;
+      }
+
+      /* see if arg type matches parameter type */
+      if (!slang_type_specifier_equal(&argType.spec,
+                                      &paramVar->type.specifier)) {
+         /* need to adapt arg type to match param type */
+         const char *constructorName =
+            slang_type_specifier_type_to_string(paramVar->type.specifier.type);
+         slang_operation *child = slang_operation_new(1);
+
+         if (dbg)
+            printf("Need to adapt types of arg %d\n", i);
+
+         slang_operation_copy(child, &callOper->children[i]);
+         child->locals->outer_scope = callOper->children[i].locals;
+
+#if 0
+         if (_slang_sizeof_type_specifier(&argType.spec) >
+             _slang_sizeof_type_specifier(&paramVar->type.specifier)) {
+         }
+#endif
+
+         callOper->children[i].type = SLANG_OPER_CALL;
+         callOper->children[i].a_id = slang_atom_pool_atom(atoms, constructorName);
+         callOper->children[i].num_children = 1;
+         callOper->children[i].children = child;
+      }
+
+      slang_typeinfo_destruct(&argType);
+   }
+
+   if (dbg) {
+      printf("===== New call to %s with cast arguments ===============\n",
+             (char*) fun->header.a_name);
+      slang_print_tree(callOper, 5);
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Adapt the arguments for a function call to match the parameters of
+ * the given function.
+ * This is for:
+ * 1. converting/casting argument types to match parameters
+ * 2. breaking up vector/matrix types into individual components to
+ *    satisfy constructors.
+ */
+GLboolean
+_slang_adapt_call(slang_operation *callOper, const slang_function *fun,
+                  const slang_name_space * space,
+                  slang_atom_pool * atoms, slang_info_log *log)
+{
+   const GLboolean haveRetValue = _slang_function_has_return_value(fun);
+   const int numParams = fun->param_count - haveRetValue;
+   int i;
+   int dbg = 0;
+
+   if (dbg)
+      printf("Adapt %d args to %d parameters for %s\n",
+             callOper->num_children, numParams, (char *) fun->header.a_name);
+
+   /* Only try adapting for constructors */
+   if (fun->kind != SLANG_FUNC_CONSTRUCTOR)
+      return GL_FALSE;
+
+   if (callOper->num_children != numParams) {
+      /* number of arguments doesn't match number of parameters */
+
+      /* For constructor calls, we can try to unroll vector/matrix args
+       * into individual floats/ints and try to match the function params.
+       */
+      for (i = 0; i < numParams; i++) {
+         slang_typeinfo argType;
+         GLint argSz, j;
+
+         /* Get type of arg[i] */
+         if (!slang_typeinfo_construct(&argType))
+            return GL_FALSE;
+         if (!_slang_typeof_operation(&callOper->children[i], space,
+                                       &argType, atoms, log)) {
+            slang_typeinfo_destruct(&argType);
+            return GL_FALSE;
+         }
+
+         /*
+           paramSz = _slang_sizeof_type_specifier(&paramVar->type.specifier);
+           assert(paramSz == 1);
+         */
+         argSz = _slang_sizeof_type_specifier(&argType.spec);
+         if (argSz > 1) {
+            slang_operation origArg;
+            /* break up arg[i] into components */
+            if (dbg)
+               printf("Break up arg %d from 1 to %d elements\n", i, argSz);
+
+            slang_operation_construct(&origArg);
+            slang_operation_copy(&origArg, &callOper->children[i]);
+
+            /* insert argSz-1 new children/args */
+            for (j = 0; j < argSz - 1; j++) {
+               (void) slang_operation_insert(&callOper->num_children,
+                                             &callOper->children, i);
+            }
+
+            /* replace arg[i+j] with subscript/index oper */
+            for (j = 0; j < argSz; j++) {
+               callOper->children[i + j].type = SLANG_OPER_SUBSCRIPT;
+               callOper->children[i + j].locals = _slang_variable_scope_new(callOper->locals);
+               callOper->children[i + j].num_children = 2;
+               callOper->children[i + j].children = slang_operation_new(2);
+               slang_operation_copy(&callOper->children[i + j].children[0],
+                                    &origArg);
+               callOper->children[i + j].children[1].type
+                  = SLANG_OPER_LITERAL_INT;
+               callOper->children[i + j].children[1].literal[0] = (GLfloat) j;
+            }
+         }
+      }
+   }
+
+   if (callOper->num_children < (GLuint) numParams) {
+      /* still not enough args for all params */
+      return GL_FALSE;
+   }
+   else if (callOper->num_children > (GLuint) numParams) {
+      /* now too many arguments */
+      /* just truncate */
+      callOper->num_children = (GLuint) numParams;
+   }
+
+   if (dbg) {
+      printf("===== New call to %s with adapted arguments ===============\n",
+             (char*) fun->header.a_name);
+      slang_print_tree(callOper, 5);
+   }
+
+   return GL_TRUE;
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_simplify.h b/mesalib/src/mesa/shader/slang/slang_simplify.h
new file mode 100644
index 000000000..8689c23b1
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_simplify.h
@@ -0,0 +1,50 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.1
+ *
+ * Copyright (C) 2005-2008  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_SIMPLIFY_H
+#define SLANG_SIMPLIFY_H
+
+
+extern GLint
+_slang_lookup_constant(const char *name);
+
+
+extern void
+_slang_simplify(slang_operation *oper,
+                const slang_name_space * space,
+                slang_atom_pool * atoms);
+
+
+extern GLboolean
+_slang_cast_func_params(slang_operation *callOper, const slang_function *fun,
+                        const slang_name_space * space,
+                        slang_atom_pool * atoms, slang_info_log *log);
+
+extern GLboolean
+_slang_adapt_call(slang_operation *callOper, const slang_function *fun,
+                  const slang_name_space * space,
+                  slang_atom_pool * atoms, slang_info_log *log);
+
+
+#endif /* SLANG_SIMPLIFY_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_storage.c b/mesalib/src/mesa/shader/slang/slang_storage.c
new file mode 100644
index 000000000..e8b0fb774
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_storage.c
@@ -0,0 +1,316 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_storage.c
+ * slang variable storage
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "slang_storage.h"
+#include "slang_mem.h"
+
+/* slang_storage_array */
+
+GLboolean
+slang_storage_array_construct(slang_storage_array * arr)
+{
+   arr->type = SLANG_STORE_AGGREGATE;
+   arr->aggregate = NULL;
+   arr->length = 0;
+   return GL_TRUE;
+}
+
+GLvoid
+slang_storage_array_destruct(slang_storage_array * arr)
+{
+   if (arr->aggregate != NULL) {
+      slang_storage_aggregate_destruct(arr->aggregate);
+      _slang_free(arr->aggregate);
+   }
+}
+
+/* slang_storage_aggregate */
+
+GLboolean
+slang_storage_aggregate_construct(slang_storage_aggregate * agg)
+{
+   agg->arrays = NULL;
+   agg->count = 0;
+   return GL_TRUE;
+}
+
+GLvoid
+slang_storage_aggregate_destruct(slang_storage_aggregate * agg)
+{
+   GLuint i;
+
+   for (i = 0; i < agg->count; i++)
+      slang_storage_array_destruct(agg->arrays + i);
+   _slang_free(agg->arrays);
+}
+
+static slang_storage_array *
+slang_storage_aggregate_push_new(slang_storage_aggregate * agg)
+{
+   slang_storage_array *arr = NULL;
+
+   agg->arrays = (slang_storage_array *)
+      _slang_realloc(agg->arrays,
+                     agg->count * sizeof(slang_storage_array),
+                     (agg->count + 1) * sizeof(slang_storage_array));
+   if (agg->arrays != NULL) {
+      arr = agg->arrays + agg->count;
+      if (!slang_storage_array_construct(arr))
+         return NULL;
+      agg->count++;
+   }
+   return arr;
+}
+
+/* _slang_aggregate_variable() */
+
+static GLboolean
+aggregate_vector(slang_storage_aggregate * agg, slang_storage_type basic_type,
+                 GLuint row_count)
+{
+   slang_storage_array *arr = slang_storage_aggregate_push_new(agg);
+   if (arr == NULL)
+      return GL_FALSE;
+   arr->type = basic_type;
+   arr->length = row_count;
+   return GL_TRUE;
+}
+
+static GLboolean
+aggregate_matrix(slang_storage_aggregate * agg, slang_storage_type basic_type,
+                 GLuint columns, GLuint rows)
+{
+   slang_storage_array *arr = slang_storage_aggregate_push_new(agg);
+   if (arr == NULL)
+      return GL_FALSE;
+   arr->type = SLANG_STORE_AGGREGATE;
+   arr->length = columns;
+   arr->aggregate = (slang_storage_aggregate *)
+      _slang_alloc(sizeof(slang_storage_aggregate));
+   if (arr->aggregate == NULL)
+      return GL_FALSE;
+   if (!slang_storage_aggregate_construct(arr->aggregate)) {
+      _slang_free(arr->aggregate);
+      arr->aggregate = NULL;
+      return GL_FALSE;
+   }
+   if (!aggregate_vector(arr->aggregate, basic_type, rows))
+      return GL_FALSE;
+   return GL_TRUE;
+}
+
+
+static GLboolean
+aggregate_variables(slang_storage_aggregate * agg,
+                    slang_variable_scope * vars, slang_function_scope * funcs,
+                    slang_struct_scope * structs,
+                    slang_variable_scope * globals,
+                    slang_atom_pool * atoms)
+{
+   GLuint i;
+
+   for (i = 0; i < vars->num_variables; i++)
+      if (!_slang_aggregate_variable(agg, &vars->variables[i]->type.specifier,
+                                     vars->variables[i]->array_len, funcs,
+                                     structs, globals, atoms))
+         return GL_FALSE;
+   return GL_TRUE;
+}
+
+
+GLboolean
+_slang_aggregate_variable(slang_storage_aggregate * agg,
+                          slang_type_specifier * spec, GLuint array_len,
+                          slang_function_scope * funcs,
+                          slang_struct_scope * structs,
+                          slang_variable_scope * vars,
+                          slang_atom_pool * atoms)
+{
+   switch (spec->type) {
+   case SLANG_SPEC_BOOL:
+      return aggregate_vector(agg, SLANG_STORE_BOOL, 1);
+   case SLANG_SPEC_BVEC2:
+      return aggregate_vector(agg, SLANG_STORE_BOOL, 2);
+   case SLANG_SPEC_BVEC3:
+      return aggregate_vector(agg, SLANG_STORE_BOOL, 3);
+   case SLANG_SPEC_BVEC4:
+      return aggregate_vector(agg, SLANG_STORE_BOOL, 4);
+   case SLANG_SPEC_INT:
+      return aggregate_vector(agg, SLANG_STORE_INT, 1);
+   case SLANG_SPEC_IVEC2:
+      return aggregate_vector(agg, SLANG_STORE_INT, 2);
+   case SLANG_SPEC_IVEC3:
+      return aggregate_vector(agg, SLANG_STORE_INT, 3);
+   case SLANG_SPEC_IVEC4:
+      return aggregate_vector(agg, SLANG_STORE_INT, 4);
+   case SLANG_SPEC_FLOAT:
+      return aggregate_vector(agg, SLANG_STORE_FLOAT, 1);
+   case SLANG_SPEC_VEC2:
+      return aggregate_vector(agg, SLANG_STORE_FLOAT, 2);
+   case SLANG_SPEC_VEC3:
+      return aggregate_vector(agg, SLANG_STORE_FLOAT, 3);
+   case SLANG_SPEC_VEC4:
+      return aggregate_vector(agg, SLANG_STORE_FLOAT, 4);
+   case SLANG_SPEC_MAT2:
+      return aggregate_matrix(agg, SLANG_STORE_FLOAT, 2, 2);
+   case SLANG_SPEC_MAT3:
+      return aggregate_matrix(agg, SLANG_STORE_FLOAT, 3, 3);
+   case SLANG_SPEC_MAT4:
+      return aggregate_matrix(agg, SLANG_STORE_FLOAT, 4, 4);
+
+   case SLANG_SPEC_MAT23:
+      return aggregate_matrix(agg, SLANG_STORE_FLOAT, 2, 3);
+   case SLANG_SPEC_MAT32:
+      return aggregate_matrix(agg, SLANG_STORE_FLOAT, 3, 2);
+   case SLANG_SPEC_MAT24:
+      return aggregate_matrix(agg, SLANG_STORE_FLOAT, 2, 4);
+   case SLANG_SPEC_MAT42:
+      return aggregate_matrix(agg, SLANG_STORE_FLOAT, 4, 2);
+   case SLANG_SPEC_MAT34:
+      return aggregate_matrix(agg, SLANG_STORE_FLOAT, 3, 4);
+   case SLANG_SPEC_MAT43:
+      return aggregate_matrix(agg, SLANG_STORE_FLOAT, 4, 3);
+
+   case SLANG_SPEC_SAMPLER1D:
+   case SLANG_SPEC_SAMPLER2D:
+   case SLANG_SPEC_SAMPLER3D:
+   case SLANG_SPEC_SAMPLERCUBE:
+   case SLANG_SPEC_SAMPLER1DSHADOW:
+   case SLANG_SPEC_SAMPLER2DSHADOW:
+   case SLANG_SPEC_SAMPLER2DRECT:
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+      return aggregate_vector(agg, SLANG_STORE_INT, 1);
+   case SLANG_SPEC_STRUCT:
+      return aggregate_variables(agg, spec->_struct->fields, funcs, structs,
+                                 vars, atoms);
+   case SLANG_SPEC_ARRAY:
+      {
+         slang_storage_array *arr;
+
+         arr = slang_storage_aggregate_push_new(agg);
+         if (arr == NULL)
+            return GL_FALSE;
+         arr->type = SLANG_STORE_AGGREGATE;
+         arr->aggregate = (slang_storage_aggregate *)
+            _slang_alloc(sizeof(slang_storage_aggregate));
+         if (arr->aggregate == NULL)
+            return GL_FALSE;
+         if (!slang_storage_aggregate_construct(arr->aggregate)) {
+            _slang_free(arr->aggregate);
+            arr->aggregate = NULL;
+            return GL_FALSE;
+         }
+         if (!_slang_aggregate_variable(arr->aggregate, spec->_array, 0,
+                                        funcs, structs, vars, atoms))
+            return GL_FALSE;
+         arr->length = array_len;
+         /* TODO: check if 0 < arr->length <= 65535 */
+      }
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+GLuint
+_slang_sizeof_type(slang_storage_type type)
+{
+   if (type == SLANG_STORE_AGGREGATE)
+      return 0;
+   if (type == SLANG_STORE_VEC4)
+      return 4 * sizeof(GLfloat);
+   return sizeof(GLfloat);
+}
+
+
+GLuint
+_slang_sizeof_aggregate(const slang_storage_aggregate * agg)
+{
+   GLuint i, size = 0;
+
+   for (i = 0; i < agg->count; i++) {
+      slang_storage_array *arr = &agg->arrays[i];
+      GLuint element_size;
+
+      if (arr->type == SLANG_STORE_AGGREGATE)
+         element_size = _slang_sizeof_aggregate(arr->aggregate);
+      else
+         element_size = _slang_sizeof_type(arr->type);
+      size += element_size * arr->length;
+   }
+   return size;
+}
+
+
+#if 0
+GLboolean
+_slang_flatten_aggregate(slang_storage_aggregate * flat,
+                         const slang_storage_aggregate * agg)
+{
+   GLuint i;
+
+   for (i = 0; i < agg->count; i++) {
+      GLuint j;
+
+      for (j = 0; j < agg->arrays[i].length; j++) {
+         if (agg->arrays[i].type == SLANG_STORE_AGGREGATE) {
+            if (!_slang_flatten_aggregate(flat, agg->arrays[i].aggregate))
+               return GL_FALSE;
+         }
+         else {
+            GLuint k, count;
+            slang_storage_type type;
+
+            if (agg->arrays[i].type == SLANG_STORE_VEC4) {
+               count = 4;
+               type = SLANG_STORE_FLOAT;
+            }
+            else {
+               count = 1;
+               type = agg->arrays[i].type;
+            }
+
+            for (k = 0; k < count; k++) {
+               slang_storage_array *arr;
+
+               arr = slang_storage_aggregate_push_new(flat);
+               if (arr == NULL)
+                  return GL_FALSE;
+               arr->type = type;
+               arr->length = 1;
+            }
+         }
+      }
+   }
+   return GL_TRUE;
+}
+#endif
diff --git a/mesalib/src/mesa/shader/slang/slang_storage.h b/mesalib/src/mesa/shader/slang/slang_storage.h
new file mode 100644
index 000000000..1876a36dd
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_storage.h
@@ -0,0 +1,139 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_STORAGE_H
+#define SLANG_STORAGE_H
+
+#include "slang_compile.h"
+
+
+/*
+ * Program variable data storage is kept completely transparent to the
+ * front-end compiler. It is up to the back-end how the data is
+ * actually allocated. The slang_storage_type enum provides the basic
+ * information about how the memory is interpreted. This abstract
+ * piece of memory is called a data slot. A data slot of a particular
+ * type has a fixed size.
+ *
+ * For now, only the three basic types are supported, that is bool,
+ * int and float. Other built-in types like vector or matrix can
+ * easily be decomposed into a series of basic types.
+ *
+ * If the vec4 module is enabled, 4-component vectors of floats are
+ * used when possible. 4x4 matrices are constructed of 4 vec4 slots.
+ */
+typedef enum slang_storage_type_
+{
+   /* core */
+   SLANG_STORE_AGGREGATE,
+   SLANG_STORE_BOOL,
+   SLANG_STORE_INT,
+   SLANG_STORE_FLOAT,
+   /* vec4 */
+   SLANG_STORE_VEC4
+} slang_storage_type;
+
+
+/**
+ * The slang_storage_array structure groups data slots of the same
+ * type into an array. This array has a fixed length. Arrays are
+ * required to have a size equal to the sum of sizes of its
+ * elements. They are also required to support indirect
+ * addressing. That is, if B references first data slot in the array,
+ * S is the size of the data slot and I is the integral index that is
+ * not known at compile time, B+I*S references I-th data slot.
+ *
+ * This structure is also used to break down built-in data types that
+ * are not supported directly.  Vectors, like vec3, are constructed
+ * from arrays of their basic types. Matrices are formed of an array
+ * of column vectors, which are in turn processed as other vectors.
+ */
+typedef struct slang_storage_array_
+{
+   slang_storage_type type;
+   struct slang_storage_aggregate_ *aggregate;
+   GLuint length;
+} slang_storage_array;
+
+GLboolean slang_storage_array_construct (slang_storage_array *);
+GLvoid slang_storage_array_destruct (slang_storage_array *);
+
+
+/**
+ * The slang_storage_aggregate structure relaxes the indirect
+ * addressing requirement for slang_storage_array
+ * structure. Aggregates are always accessed statically - its member
+ * addresses are well-known at compile time. For example, user-defined
+ * types are implemented as aggregates. Aggregates can collect data of
+ * a different type.
+ */
+typedef struct slang_storage_aggregate_
+{
+   slang_storage_array *arrays;
+   GLuint count;
+} slang_storage_aggregate;
+
+GLboolean slang_storage_aggregate_construct (slang_storage_aggregate *);
+GLvoid slang_storage_aggregate_destruct (slang_storage_aggregate *);
+
+
+extern GLboolean
+_slang_aggregate_variable(slang_storage_aggregate *agg,
+                          slang_type_specifier *spec,
+                          GLuint array_len,
+                          slang_function_scope *funcs,
+                          slang_struct_scope *structs,
+                          slang_variable_scope *vars,
+                          slang_atom_pool *atoms);
+
+/*
+ * Returns the size (in machine units) of the given storage type.
+ * It is an error to pass-in SLANG_STORE_AGGREGATE.
+ * Returns 0 on error.
+ */
+extern GLuint
+_slang_sizeof_type (slang_storage_type);
+
+
+/**
+ * Returns total size (in machine units) of the given aggregate.
+ * Returns 0 on error.
+ */
+extern GLuint
+_slang_sizeof_aggregate (const slang_storage_aggregate *);
+
+
+#if 0
+/**
+ * Converts structured aggregate to a flat one, with arrays of generic
+ * type being one-element long.  Returns GL_TRUE on success.  Returns
+ * GL_FALSE otherwise.
+ */
+extern GLboolean
+_slang_flatten_aggregate (slang_storage_aggregate *,
+                          const slang_storage_aggregate *);
+
+#endif
+
+#endif /* SLANG_STORAGE_H */
diff --git a/mesalib/src/mesa/shader/slang/slang_typeinfo.c b/mesalib/src/mesa/shader/slang/slang_typeinfo.c
new file mode 100644
index 000000000..4a48bc8b8
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_typeinfo.c
@@ -0,0 +1,1138 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_typeinfo.c
+ * slang type info
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "shader/prog_instruction.h"
+#include "slang_typeinfo.h"
+#include "slang_compile.h"
+#include "slang_log.h"
+#include "slang_mem.h"
+
+
+/**
+ * Checks if a field selector is a general swizzle (an r-value swizzle
+ * with replicated components or an l-value swizzle mask) for a
+ * vector.  Returns GL_TRUE if this is the case, <swz> is filled with
+ * swizzle information.  Returns GL_FALSE otherwise.
+ */
+GLboolean
+_slang_is_swizzle(const char *field, GLuint rows, slang_swizzle * swz)
+{
+   GLuint i;
+   GLboolean xyzw = GL_FALSE, rgba = GL_FALSE, stpq = GL_FALSE;
+
+   /* init to undefined.
+    * We rely on undefined/nil values to distinguish between
+    * regular swizzles and writemasks.
+    * For example, the swizzle ".xNNN" is the writemask ".x".
+    * That's different than the swizzle ".xxxx".
+    */
+   for (i = 0; i < 4; i++)
+      swz->swizzle[i] = SWIZZLE_NIL;
+
+   /* the swizzle can be at most 4-component long */
+   swz->num_components = slang_string_length(field);
+   if (swz->num_components > 4)
+      return GL_FALSE;
+
+   for (i = 0; i < swz->num_components; i++) {
+      /* mark which swizzle group is used */
+      switch (field[i]) {
+      case 'x':
+      case 'y':
+      case 'z':
+      case 'w':
+         xyzw = GL_TRUE;
+         break;
+      case 'r':
+      case 'g':
+      case 'b':
+      case 'a':
+         rgba = GL_TRUE;
+         break;
+      case 's':
+      case 't':
+      case 'p':
+      case 'q':
+         stpq = GL_TRUE;
+         break;
+      default:
+         return GL_FALSE;
+      }
+
+      /* collect swizzle component */
+      switch (field[i]) {
+      case 'x':
+      case 'r':
+      case 's':
+         swz->swizzle[i] = 0;
+         break;
+      case 'y':
+      case 'g':
+      case 't':
+         swz->swizzle[i] = 1;
+         break;
+      case 'z':
+      case 'b':
+      case 'p':
+         swz->swizzle[i] = 2;
+         break;
+      case 'w':
+      case 'a':
+      case 'q':
+         swz->swizzle[i] = 3;
+         break;
+      }
+
+      /* check if the component is valid for given vector's row count */
+      if (rows <= swz->swizzle[i])
+         return GL_FALSE;
+   }
+
+   /* only one swizzle group can be used */
+   if ((xyzw && rgba) || (xyzw && stpq) || (rgba && stpq))
+      return GL_FALSE;
+
+   return GL_TRUE;
+}
+
+
+
+/**
+ * Checks if a general swizzle is an l-value swizzle - these swizzles
+ * do not have duplicated fields.  Returns GL_TRUE if this is a
+ * swizzle mask.  Returns GL_FALSE otherwise
+ */
+static GLboolean
+_slang_is_swizzle_mask(const slang_swizzle * swz, GLuint rows)
+{
+   GLuint i, c = 0;
+
+   /* the swizzle may not be longer than the vector dim */
+   if (swz->num_components > rows)
+      return GL_FALSE;
+
+   /* the swizzle components cannot be duplicated */
+   for (i = 0; i < swz->num_components; i++) {
+      if ((c & (1 << swz->swizzle[i])) != 0)
+         return GL_FALSE;
+      c |= 1 << swz->swizzle[i];
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Combines (multiplies) two swizzles to form single swizzle.
+ * Example: "vec.wzyx.yx" --> "vec.zw".
+ */
+static void
+_slang_multiply_swizzles(slang_swizzle * dst, const slang_swizzle * left,
+                         const slang_swizzle * right)
+{
+   GLuint i;
+
+   dst->num_components = right->num_components;
+   for (i = 0; i < right->num_components; i++)
+      dst->swizzle[i] = left->swizzle[right->swizzle[i]];
+}
+
+
+typedef struct
+{
+   const char *name;
+   slang_type_specifier_type type;
+} type_specifier_type_name;
+
+static const type_specifier_type_name type_specifier_type_names[] = {
+   {"void", SLANG_SPEC_VOID},
+   {"bool", SLANG_SPEC_BOOL},
+   {"bvec2", SLANG_SPEC_BVEC2},
+   {"bvec3", SLANG_SPEC_BVEC3},
+   {"bvec4", SLANG_SPEC_BVEC4},
+   {"int", SLANG_SPEC_INT},
+   {"ivec2", SLANG_SPEC_IVEC2},
+   {"ivec3", SLANG_SPEC_IVEC3},
+   {"ivec4", SLANG_SPEC_IVEC4},
+   {"float", SLANG_SPEC_FLOAT},
+   {"vec2", SLANG_SPEC_VEC2},
+   {"vec3", SLANG_SPEC_VEC3},
+   {"vec4", SLANG_SPEC_VEC4},
+   {"mat2", SLANG_SPEC_MAT2},
+   {"mat3", SLANG_SPEC_MAT3},
+   {"mat4", SLANG_SPEC_MAT4},
+   {"mat2x3", SLANG_SPEC_MAT23},
+   {"mat3x2", SLANG_SPEC_MAT32},
+   {"mat2x4", SLANG_SPEC_MAT24},
+   {"mat4x2", SLANG_SPEC_MAT42},
+   {"mat3x4", SLANG_SPEC_MAT34},
+   {"mat4x3", SLANG_SPEC_MAT43},
+   {"sampler1D", SLANG_SPEC_SAMPLER1D},
+   {"sampler2D", SLANG_SPEC_SAMPLER2D},
+   {"sampler3D", SLANG_SPEC_SAMPLER3D},
+   {"samplerCube", SLANG_SPEC_SAMPLERCUBE},
+   {"sampler1DShadow", SLANG_SPEC_SAMPLER1DSHADOW},
+   {"sampler2DShadow", SLANG_SPEC_SAMPLER2DSHADOW},
+   {"sampler2DRect", SLANG_SPEC_SAMPLER2DRECT},
+   {"sampler2DRectShadow", SLANG_SPEC_SAMPLER2DRECTSHADOW},
+   {NULL, SLANG_SPEC_VOID}
+};
+
+slang_type_specifier_type
+slang_type_specifier_type_from_string(const char *name)
+{
+   const type_specifier_type_name *p = type_specifier_type_names;
+   while (p->name != NULL) {
+      if (slang_string_compare(p->name, name) == 0)
+         break;
+      p++;
+   }
+   return p->type;
+}
+
+const char *
+slang_type_specifier_type_to_string(slang_type_specifier_type type)
+{
+   const type_specifier_type_name *p = type_specifier_type_names;
+   while (p->name != NULL) {
+      if (p->type == type)
+         break;
+      p++;
+   }
+   return p->name;
+}
+
+/* slang_fully_specified_type */
+
+int
+slang_fully_specified_type_construct(slang_fully_specified_type * type)
+{
+   type->qualifier = SLANG_QUAL_NONE;
+   slang_type_specifier_ctr(&type->specifier);
+   return 1;
+}
+
+void
+slang_fully_specified_type_destruct(slang_fully_specified_type * type)
+{
+   slang_type_specifier_dtr(&type->specifier);
+}
+
+int
+slang_fully_specified_type_copy(slang_fully_specified_type * x,
+                                const slang_fully_specified_type * y)
+{
+   slang_fully_specified_type z;
+
+   if (!slang_fully_specified_type_construct(&z))
+      return 0;
+   z.qualifier = y->qualifier;
+   z.precision = y->precision;
+   z.variant = y->variant;
+   z.centroid = y->centroid;
+   z.array_len = y->array_len;
+   if (!slang_type_specifier_copy(&z.specifier, &y->specifier)) {
+      slang_fully_specified_type_destruct(&z);
+      return 0;
+   }
+   slang_fully_specified_type_destruct(x);
+   *x = z;
+   return 1;
+}
+
+
+
+GLvoid
+slang_type_specifier_ctr(slang_type_specifier * self)
+{
+   self->type = SLANG_SPEC_VOID;
+   self->_struct = NULL;
+   self->_array = NULL;
+}
+
+GLvoid
+slang_type_specifier_dtr(slang_type_specifier * self)
+{
+   if (self->_struct != NULL) {
+      slang_struct_destruct(self->_struct);
+      _slang_free(self->_struct);
+   }
+   if (self->_array != NULL) {
+      slang_type_specifier_dtr(self->_array);
+      _slang_free(self->_array);
+   }
+}
+
+slang_type_specifier *
+slang_type_specifier_new(slang_type_specifier_type type,
+                         struct slang_struct_ *_struct,
+                         struct slang_type_specifier_ *_array)
+{
+   slang_type_specifier *spec =
+      (slang_type_specifier *) _slang_alloc(sizeof(slang_type_specifier));
+   if (spec) {
+      spec->type = type;
+      spec->_struct = _struct;
+      spec->_array = _array;
+   }
+   return spec;
+}
+
+GLboolean
+slang_type_specifier_copy(slang_type_specifier * x,
+                          const slang_type_specifier * y)
+{
+   slang_type_specifier z;
+
+   slang_type_specifier_ctr(&z);
+   z.type = y->type;
+   if (z.type == SLANG_SPEC_STRUCT) {
+      z._struct = (slang_struct *) _slang_alloc(sizeof(slang_struct));
+      if (z._struct == NULL) {
+         slang_type_specifier_dtr(&z);
+         return GL_FALSE;
+      }
+      if (!slang_struct_construct(z._struct)) {
+         _slang_free(z._struct);
+         slang_type_specifier_dtr(&z);
+         return GL_FALSE;
+      }
+      if (!slang_struct_copy(z._struct, y->_struct)) {
+         slang_type_specifier_dtr(&z);
+         return GL_FALSE;
+      }
+   }
+   else if (z.type == SLANG_SPEC_ARRAY) {
+      z._array = (slang_type_specifier *)
+         _slang_alloc(sizeof(slang_type_specifier));
+      if (z._array == NULL) {
+         slang_type_specifier_dtr(&z);
+         return GL_FALSE;
+      }
+      slang_type_specifier_ctr(z._array);
+      if (!slang_type_specifier_copy(z._array, y->_array)) {
+         slang_type_specifier_dtr(&z);
+         return GL_FALSE;
+      }
+   }
+   slang_type_specifier_dtr(x);
+   *x = z;
+   return GL_TRUE;
+}
+
+
+/**
+ * Test if two types are equal.
+ */
+GLboolean
+slang_type_specifier_equal(const slang_type_specifier * x,
+                           const slang_type_specifier * y)
+{
+   if (x->type != y->type)
+      return GL_FALSE;
+   if (x->type == SLANG_SPEC_STRUCT)
+      return slang_struct_equal(x->_struct, y->_struct);
+   if (x->type == SLANG_SPEC_ARRAY)
+      return slang_type_specifier_equal(x->_array, y->_array);
+   return GL_TRUE;
+}
+
+
+/**
+ * As above, but allow float/int casting.
+ */
+GLboolean
+slang_type_specifier_compatible(const slang_type_specifier * x,
+                                const slang_type_specifier * y)
+{
+   /* special case: float == int */
+   if (x->type == SLANG_SPEC_INT && y->type == SLANG_SPEC_FLOAT) {
+      return GL_TRUE;
+   }
+   /* XXX may need to add bool/int compatibility, etc */
+
+   if (x->type != y->type)
+      return GL_FALSE;
+   if (x->type == SLANG_SPEC_STRUCT)
+      return slang_struct_equal(x->_struct, y->_struct);
+   if (x->type == SLANG_SPEC_ARRAY)
+      return slang_type_specifier_compatible(x->_array, y->_array);
+   return GL_TRUE;
+}
+
+
+GLboolean
+slang_typeinfo_construct(slang_typeinfo * ti)
+{
+   _mesa_bzero(ti, sizeof(*ti));
+   slang_type_specifier_ctr(&ti->spec);
+   ti->array_len = 0;
+   return GL_TRUE;
+}
+
+GLvoid
+slang_typeinfo_destruct(slang_typeinfo * ti)
+{
+   slang_type_specifier_dtr(&ti->spec);
+}
+
+
+
+/**
+ * Determine the return type of a function.
+ * \param a_name  the function name
+ * \param param  function parameters (overloading)
+ * \param num_params  number of parameters to function
+ * \param space  namespace to search
+ * \param spec  returns the type
+ * \param funFound  returns pointer to the function, or NULL if not found.
+ * \return GL_TRUE for success, GL_FALSE if failure (bad function name)
+ */
+static GLboolean
+_slang_typeof_function(slang_atom a_name,
+                       slang_operation * params, GLuint num_params,
+                       const slang_name_space * space,
+                       slang_type_specifier * spec,
+                       slang_function **funFound,
+                       slang_atom_pool *atoms, slang_info_log *log)
+{
+   GLboolean error;
+
+   *funFound = _slang_function_locate(space->funcs, a_name, params,
+                                      num_params, space, atoms, log, &error);
+   if (error)
+      return GL_FALSE;
+
+   if (!*funFound)
+      return GL_TRUE;  /* yes, not false */
+
+   return slang_type_specifier_copy(spec, &(*funFound)->header.type.specifier);
+}
+
+
+/**
+ * Determine the type of a math function.
+ * \param name  name of the operator, one of +,-,*,/ or unary -
+ * \param params  array of function parameters
+ * \param num_params  number of parameters
+ * \param space  namespace to use
+ * \param spec  returns the function's type
+ * \param atoms  atom pool
+ * \return GL_TRUE for success, GL_FALSE if failure
+ */
+static GLboolean
+typeof_math_call(const char *name, slang_operation *call,
+                 const slang_name_space * space,
+                 slang_type_specifier * spec,
+                 slang_atom_pool * atoms,
+                 slang_info_log *log)
+{
+   if (call->fun) {
+      /* we've previously resolved this function call */
+      slang_type_specifier_copy(spec, &call->fun->header.type.specifier);
+      return GL_TRUE;
+   }
+   else {
+      slang_atom atom;
+      slang_function *fun;
+
+      /* number of params: */
+      assert(call->num_children == 1 || call->num_children == 2);
+
+      atom = slang_atom_pool_atom(atoms, name);
+      if (!_slang_typeof_function(atom, call->children, call->num_children,
+                                  space, spec, &fun, atoms, log))
+         return GL_FALSE;
+
+      if (fun) {
+         /* Save pointer to save time in future */
+         call->fun = fun;
+         return GL_TRUE;
+      }
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Determine the return type of an operation.
+ * \param op  the operation node
+ * \param space  the namespace to use
+ * \param ti  the returned type
+ * \param atoms  atom pool
+ * \return GL_TRUE for success, GL_FALSE if failure
+ */
+GLboolean
+_slang_typeof_operation(slang_operation * op,
+                         const slang_name_space * space,
+                         slang_typeinfo * ti,
+                         slang_atom_pool * atoms,
+                         slang_info_log *log)
+{
+   ti->can_be_referenced = GL_FALSE;
+   ti->is_swizzled = GL_FALSE;
+
+   switch (op->type) {
+   case SLANG_OPER_BLOCK_NO_NEW_SCOPE:
+   case SLANG_OPER_BLOCK_NEW_SCOPE:
+   case SLANG_OPER_ASM:
+   case SLANG_OPER_BREAK:
+   case SLANG_OPER_CONTINUE:
+   case SLANG_OPER_DISCARD:
+   case SLANG_OPER_RETURN:
+   case SLANG_OPER_IF:
+   case SLANG_OPER_WHILE:
+   case SLANG_OPER_DO:
+   case SLANG_OPER_FOR:
+   case SLANG_OPER_VOID:
+      ti->spec.type = SLANG_SPEC_VOID;
+      break;
+   case SLANG_OPER_EXPRESSION:
+   case SLANG_OPER_ASSIGN:
+   case SLANG_OPER_ADDASSIGN:
+   case SLANG_OPER_SUBASSIGN:
+   case SLANG_OPER_MULASSIGN:
+   case SLANG_OPER_DIVASSIGN:
+   case SLANG_OPER_PREINCREMENT:
+   case SLANG_OPER_PREDECREMENT:
+      if (!_slang_typeof_operation(op->children, space, ti, atoms, log))
+         return GL_FALSE;
+      break;
+   case SLANG_OPER_LITERAL_BOOL:
+      if (op->literal_size == 1)
+         ti->spec.type = SLANG_SPEC_BOOL;
+      else if (op->literal_size == 2)
+         ti->spec.type = SLANG_SPEC_BVEC2;
+      else if (op->literal_size == 3)
+         ti->spec.type = SLANG_SPEC_BVEC3;
+      else if (op->literal_size == 4)
+         ti->spec.type = SLANG_SPEC_BVEC4;
+      else {
+         _mesa_problem(NULL,
+               "Unexpected bool literal_size %d in _slang_typeof_operation()",
+               op->literal_size);
+         ti->spec.type = SLANG_SPEC_BOOL;
+      }
+      break;
+   case SLANG_OPER_LOGICALOR:
+   case SLANG_OPER_LOGICALXOR:
+   case SLANG_OPER_LOGICALAND:
+   case SLANG_OPER_EQUAL:
+   case SLANG_OPER_NOTEQUAL:
+   case SLANG_OPER_LESS:
+   case SLANG_OPER_GREATER:
+   case SLANG_OPER_LESSEQUAL:
+   case SLANG_OPER_GREATEREQUAL:
+   case SLANG_OPER_NOT:
+      ti->spec.type = SLANG_SPEC_BOOL;
+      break;
+   case SLANG_OPER_LITERAL_INT:
+      if (op->literal_size == 1)
+         ti->spec.type = SLANG_SPEC_INT;
+      else if (op->literal_size == 2)
+         ti->spec.type = SLANG_SPEC_IVEC2;
+      else if (op->literal_size == 3)
+         ti->spec.type = SLANG_SPEC_IVEC3;
+      else if (op->literal_size == 4)
+         ti->spec.type = SLANG_SPEC_IVEC4;
+      else {
+         _mesa_problem(NULL,
+               "Unexpected int literal_size %d in _slang_typeof_operation()",
+               op->literal_size);
+         ti->spec.type = SLANG_SPEC_INT;
+      }
+      break;
+   case SLANG_OPER_LITERAL_FLOAT:
+      if (op->literal_size == 1)
+         ti->spec.type = SLANG_SPEC_FLOAT;
+      else if (op->literal_size == 2)
+         ti->spec.type = SLANG_SPEC_VEC2;
+      else if (op->literal_size == 3)
+         ti->spec.type = SLANG_SPEC_VEC3;
+      else if (op->literal_size == 4)
+         ti->spec.type = SLANG_SPEC_VEC4;
+      else {
+         _mesa_problem(NULL,
+               "Unexpected float literal_size %d in _slang_typeof_operation()",
+               op->literal_size);
+         ti->spec.type = SLANG_SPEC_FLOAT;
+      }
+      break;
+   case SLANG_OPER_IDENTIFIER:
+   case SLANG_OPER_VARIABLE_DECL:
+      {
+         slang_variable *var;
+         var = _slang_variable_locate(op->locals, op->a_id, GL_TRUE);
+         if (!var) {
+            slang_info_log_error(log, "undefined variable '%s'",
+                                 (char *) op->a_id);
+            return GL_FALSE;
+         }
+         if (!slang_type_specifier_copy(&ti->spec, &var->type.specifier)) {
+            slang_info_log_memory(log);
+            return GL_FALSE;
+         }
+         ti->can_be_referenced = GL_TRUE;
+         if (var->type.specifier.type == SLANG_SPEC_ARRAY &&
+             var->type.array_len >= 1) {
+            /* the datatype is an array, ex: float[3] x; */
+            ti->array_len = var->type.array_len;
+         }
+         else {
+            /* the variable is an array, ex: float x[3]; */
+            ti->array_len = var->array_len;
+         }
+      }
+      break;
+   case SLANG_OPER_SEQUENCE:
+      /* TODO: check [0] and [1] if they match */
+      if (!_slang_typeof_operation(&op->children[1], space, ti, atoms, log)) {
+         return GL_FALSE;
+      }
+      ti->can_be_referenced = GL_FALSE;
+      ti->is_swizzled = GL_FALSE;
+      break;
+      /*case SLANG_OPER_MODASSIGN: */
+      /*case SLANG_OPER_LSHASSIGN: */
+      /*case SLANG_OPER_RSHASSIGN: */
+      /*case SLANG_OPER_ORASSIGN: */
+      /*case SLANG_OPER_XORASSIGN: */
+      /*case SLANG_OPER_ANDASSIGN: */
+   case SLANG_OPER_SELECT:
+      /* TODO: check [1] and [2] if they match */
+      if (!_slang_typeof_operation(&op->children[1], space, ti, atoms, log)) {
+         return GL_FALSE;
+      }
+      ti->can_be_referenced = GL_FALSE;
+      ti->is_swizzled = GL_FALSE;
+      break;
+      /*case SLANG_OPER_BITOR: */
+      /*case SLANG_OPER_BITXOR: */
+      /*case SLANG_OPER_BITAND: */
+      /*case SLANG_OPER_LSHIFT: */
+      /*case SLANG_OPER_RSHIFT: */
+   case SLANG_OPER_ADD:
+      assert(op->num_children == 2);
+      if (!typeof_math_call("+", op, space, &ti->spec, atoms, log))
+         return GL_FALSE;
+      break;
+   case SLANG_OPER_SUBTRACT:
+      assert(op->num_children == 2);
+      if (!typeof_math_call("-", op, space, &ti->spec, atoms, log))
+         return GL_FALSE;
+      break;
+   case SLANG_OPER_MULTIPLY:
+      assert(op->num_children == 2);
+      if (!typeof_math_call("*", op, space, &ti->spec, atoms, log))
+         return GL_FALSE;
+      break;
+   case SLANG_OPER_DIVIDE:
+      assert(op->num_children == 2);
+      if (!typeof_math_call("/", op, space, &ti->spec, atoms, log))
+         return GL_FALSE;
+      break;
+   /*case SLANG_OPER_MODULUS: */
+   case SLANG_OPER_PLUS:
+      if (!_slang_typeof_operation(op->children, space, ti, atoms, log))
+         return GL_FALSE;
+      ti->can_be_referenced = GL_FALSE;
+      ti->is_swizzled = GL_FALSE;
+      break;
+   case SLANG_OPER_MINUS:
+      assert(op->num_children == 1);
+      if (!typeof_math_call("-", op, space, &ti->spec, atoms, log))
+         return GL_FALSE;
+      break;
+      /*case SLANG_OPER_COMPLEMENT: */
+   case SLANG_OPER_SUBSCRIPT:
+      {
+         slang_typeinfo _ti;
+
+         if (!slang_typeinfo_construct(&_ti))
+            return GL_FALSE;
+         if (!_slang_typeof_operation(op->children, space, &_ti, atoms, log)) {
+            slang_typeinfo_destruct(&_ti);
+            return GL_FALSE;
+         }
+         ti->can_be_referenced = _ti.can_be_referenced;
+         if (_ti.spec.type == SLANG_SPEC_ARRAY) {
+            if (!slang_type_specifier_copy(&ti->spec, _ti.spec._array)) {
+               slang_typeinfo_destruct(&_ti);
+               return GL_FALSE;
+            }
+         }
+         else {
+            if (!_slang_type_is_vector(_ti.spec.type)
+                && !_slang_type_is_matrix(_ti.spec.type)) {
+               slang_typeinfo_destruct(&_ti);
+               slang_info_log_error(log, "cannot index a non-array type");
+               return GL_FALSE;
+            }
+            ti->spec.type = _slang_type_base(_ti.spec.type);
+         }
+         slang_typeinfo_destruct(&_ti);
+      }
+      break;
+   case SLANG_OPER_CALL:
+      if (op->array_constructor) {
+         /* build array typeinfo */
+         ti->spec.type = SLANG_SPEC_ARRAY;
+         ti->spec._array = (slang_type_specifier *)
+            _slang_alloc(sizeof(slang_type_specifier));
+         slang_type_specifier_ctr(ti->spec._array);
+
+         ti->spec._array->type =
+            slang_type_specifier_type_from_string((char *) op->a_id);
+         ti->array_len = op->num_children;
+      }
+      else if (op->fun) {
+         /* we've resolved this call before */
+         slang_type_specifier_copy(&ti->spec, &op->fun->header.type.specifier);
+      }
+      else {
+         slang_function *fun;
+         if (!_slang_typeof_function(op->a_id, op->children, op->num_children,
+                                     space, &ti->spec, &fun, atoms, log))
+            return GL_FALSE;
+         if (fun) {
+            /* save result for future use */
+            op->fun = fun;
+         }
+         else {
+            slang_struct *s =
+               slang_struct_scope_find(space->structs, op->a_id, GL_TRUE);
+            if (s) {
+               /* struct initializer */
+               ti->spec.type = SLANG_SPEC_STRUCT;
+               ti->spec._struct =
+                  (slang_struct *) _slang_alloc(sizeof(slang_struct));
+               if (ti->spec._struct == NULL)
+                  return GL_FALSE;
+               if (!slang_struct_construct(ti->spec._struct)) {
+                  _slang_free(ti->spec._struct);
+                  ti->spec._struct = NULL;
+                  return GL_FALSE;
+               }
+               if (!slang_struct_copy(ti->spec._struct, s))
+                  return GL_FALSE;
+            }
+            else {
+               /* float, int, vec4, mat3, etc. constructor? */
+               const char *name;
+               slang_type_specifier_type type;
+
+               name = slang_atom_pool_id(atoms, op->a_id);
+               type = slang_type_specifier_type_from_string(name);
+               if (type == SLANG_SPEC_VOID) {
+                  slang_info_log_error(log, "undefined function '%s'", name);
+                  return GL_FALSE;
+               }
+               ti->spec.type = type;
+            }
+         }
+      }
+      break;
+   case SLANG_OPER_METHOD:
+      /* at this time, GLSL 1.20 only has one method: array.length()
+       * which returns an integer.
+       */
+      ti->spec.type = SLANG_SPEC_INT;
+      break;
+   case SLANG_OPER_FIELD:
+      {
+         slang_typeinfo _ti;
+
+         if (!slang_typeinfo_construct(&_ti))
+            return GL_FALSE;
+         if (!_slang_typeof_operation(op->children, space, &_ti, atoms, log)) {
+            slang_typeinfo_destruct(&_ti);
+            return GL_FALSE;
+         }
+         if (_ti.spec.type == SLANG_SPEC_STRUCT) {
+            slang_variable *field;
+
+            field = _slang_variable_locate(_ti.spec._struct->fields, op->a_id,
+                                           GL_FALSE);
+            if (field == NULL) {
+               slang_typeinfo_destruct(&_ti);
+               return GL_FALSE;
+            }
+            if (!slang_type_specifier_copy(&ti->spec, &field->type.specifier)) {
+               slang_typeinfo_destruct(&_ti);
+               return GL_FALSE;
+            }
+            ti->can_be_referenced = _ti.can_be_referenced;
+            ti->array_len = field->array_len;
+         }
+         else {
+            GLuint rows;
+            const char *swizzle;
+            slang_type_specifier_type base;
+
+            /* determine the swizzle of the field expression */
+            if (!_slang_type_is_vector(_ti.spec.type)) {
+               slang_typeinfo_destruct(&_ti);
+               slang_info_log_error(log, "Can't swizzle scalar expression");
+               return GL_FALSE;
+            }
+            rows = _slang_type_dim(_ti.spec.type);
+            swizzle = slang_atom_pool_id(atoms, op->a_id);
+            if (!_slang_is_swizzle(swizzle, rows, &ti->swz)) {
+               slang_typeinfo_destruct(&_ti);
+               slang_info_log_error(log, "bad swizzle '%s'", swizzle);
+               return GL_FALSE;
+            }
+            ti->is_swizzled = GL_TRUE;
+            ti->can_be_referenced = _ti.can_be_referenced
+               && _slang_is_swizzle_mask(&ti->swz, rows);
+            if (_ti.is_swizzled) {
+               slang_swizzle swz;
+
+               /* swizzle the swizzle */
+               _slang_multiply_swizzles(&swz, &_ti.swz, &ti->swz);
+               ti->swz = swz;
+            }
+            base = _slang_type_base(_ti.spec.type);
+            switch (ti->swz.num_components) {
+            case 1:
+               ti->spec.type = base;
+               break;
+            case 2:
+               switch (base) {
+               case SLANG_SPEC_FLOAT:
+                  ti->spec.type = SLANG_SPEC_VEC2;
+                  break;
+               case SLANG_SPEC_INT:
+                  ti->spec.type = SLANG_SPEC_IVEC2;
+                  break;
+               case SLANG_SPEC_BOOL:
+                  ti->spec.type = SLANG_SPEC_BVEC2;
+                  break;
+               default:
+                  break;
+               }
+               break;
+            case 3:
+               switch (base) {
+               case SLANG_SPEC_FLOAT:
+                  ti->spec.type = SLANG_SPEC_VEC3;
+                  break;
+               case SLANG_SPEC_INT:
+                  ti->spec.type = SLANG_SPEC_IVEC3;
+                  break;
+               case SLANG_SPEC_BOOL:
+                  ti->spec.type = SLANG_SPEC_BVEC3;
+                  break;
+               default:
+                  break;
+               }
+               break;
+            case 4:
+               switch (base) {
+               case SLANG_SPEC_FLOAT:
+                  ti->spec.type = SLANG_SPEC_VEC4;
+                  break;
+               case SLANG_SPEC_INT:
+                  ti->spec.type = SLANG_SPEC_IVEC4;
+                  break;
+               case SLANG_SPEC_BOOL:
+                  ti->spec.type = SLANG_SPEC_BVEC4;
+                  break;
+               default:
+                  break;
+               }
+               break;
+            default:
+               break;
+            }
+         }
+         slang_typeinfo_destruct(&_ti);
+      }
+      break;
+   case SLANG_OPER_POSTINCREMENT:
+   case SLANG_OPER_POSTDECREMENT:
+      if (!_slang_typeof_operation(op->children, space, ti, atoms, log))
+         return GL_FALSE;
+      ti->can_be_referenced = GL_FALSE;
+      ti->is_swizzled = GL_FALSE;
+      break;
+   default:
+      return GL_FALSE;
+   }
+
+   return GL_TRUE;
+}
+
+
+/**
+ * Determine if a type is a matrix.
+ * \return GL_TRUE if is a matrix, GL_FALSE otherwise.
+ */
+GLboolean
+_slang_type_is_matrix(slang_type_specifier_type ty)
+{
+   switch (ty) {
+   case SLANG_SPEC_MAT2:
+   case SLANG_SPEC_MAT3:
+   case SLANG_SPEC_MAT4:
+   case SLANG_SPEC_MAT23:
+   case SLANG_SPEC_MAT32:
+   case SLANG_SPEC_MAT24:
+   case SLANG_SPEC_MAT42:
+   case SLANG_SPEC_MAT34:
+   case SLANG_SPEC_MAT43:
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Determine if a type is a vector.
+ * \return GL_TRUE if is a vector, GL_FALSE otherwise.
+ */
+GLboolean
+_slang_type_is_vector(slang_type_specifier_type ty)
+{
+   switch (ty) {
+   case SLANG_SPEC_VEC2:
+   case SLANG_SPEC_VEC3:
+   case SLANG_SPEC_VEC4:
+   case SLANG_SPEC_IVEC2:
+   case SLANG_SPEC_IVEC3:
+   case SLANG_SPEC_IVEC4:
+   case SLANG_SPEC_BVEC2:
+   case SLANG_SPEC_BVEC3:
+   case SLANG_SPEC_BVEC4:
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Determine if a type is a float, float vector or float matrix.
+ * \return GL_TRUE if so, GL_FALSE otherwise
+ */
+GLboolean
+_slang_type_is_float_vec_mat(slang_type_specifier_type ty)
+{
+   switch (ty) {
+   case SLANG_SPEC_FLOAT:
+   case SLANG_SPEC_VEC2:
+   case SLANG_SPEC_VEC3:
+   case SLANG_SPEC_VEC4:
+   case SLANG_SPEC_MAT2:
+   case SLANG_SPEC_MAT3:
+   case SLANG_SPEC_MAT4:
+   case SLANG_SPEC_MAT23:
+   case SLANG_SPEC_MAT32:
+   case SLANG_SPEC_MAT24:
+   case SLANG_SPEC_MAT42:
+   case SLANG_SPEC_MAT34:
+   case SLANG_SPEC_MAT43:
+      return GL_TRUE;
+   default:
+      return GL_FALSE;
+   }
+}
+
+
+/**
+ * Given a vector type, return the type of the vector's elements.
+ * For a matrix, return the type of the columns.
+ */
+slang_type_specifier_type
+_slang_type_base(slang_type_specifier_type ty)
+{
+   switch (ty) {
+   case SLANG_SPEC_FLOAT:
+   case SLANG_SPEC_VEC2:
+   case SLANG_SPEC_VEC3:
+   case SLANG_SPEC_VEC4:
+      return SLANG_SPEC_FLOAT;
+   case SLANG_SPEC_INT:
+   case SLANG_SPEC_IVEC2:
+   case SLANG_SPEC_IVEC3:
+   case SLANG_SPEC_IVEC4:
+      return SLANG_SPEC_INT;
+   case SLANG_SPEC_BOOL:
+   case SLANG_SPEC_BVEC2:
+   case SLANG_SPEC_BVEC3:
+   case SLANG_SPEC_BVEC4:
+      return SLANG_SPEC_BOOL;
+   case SLANG_SPEC_MAT2:
+      return SLANG_SPEC_VEC2;
+   case SLANG_SPEC_MAT3:
+      return SLANG_SPEC_VEC3;
+   case SLANG_SPEC_MAT4:
+      return SLANG_SPEC_VEC4;
+   case SLANG_SPEC_MAT23:
+      return SLANG_SPEC_VEC3;
+   case SLANG_SPEC_MAT32:
+      return SLANG_SPEC_VEC2;
+   case SLANG_SPEC_MAT24:
+      return SLANG_SPEC_VEC4;
+   case SLANG_SPEC_MAT42:
+      return SLANG_SPEC_VEC2;
+   case SLANG_SPEC_MAT34:
+      return SLANG_SPEC_VEC4;
+   case SLANG_SPEC_MAT43:
+      return SLANG_SPEC_VEC3;
+   default:
+      return SLANG_SPEC_VOID;
+   }
+}
+
+
+/**
+ * Return the dimensionality of a vector, or for a matrix, return number
+ * of columns.
+ */
+GLuint
+_slang_type_dim(slang_type_specifier_type ty)
+{
+   switch (ty) {
+   case SLANG_SPEC_FLOAT:
+   case SLANG_SPEC_INT:
+   case SLANG_SPEC_BOOL:
+      return 1;
+   case SLANG_SPEC_VEC2:
+   case SLANG_SPEC_IVEC2:
+   case SLANG_SPEC_BVEC2:
+   case SLANG_SPEC_MAT2:
+      return 2;
+   case SLANG_SPEC_VEC3:
+   case SLANG_SPEC_IVEC3:
+   case SLANG_SPEC_BVEC3:
+   case SLANG_SPEC_MAT3:
+      return 3;
+   case SLANG_SPEC_VEC4:
+   case SLANG_SPEC_IVEC4:
+   case SLANG_SPEC_BVEC4:
+   case SLANG_SPEC_MAT4:
+      return 4;
+
+   case SLANG_SPEC_MAT23:
+      return 2;
+   case SLANG_SPEC_MAT32:
+      return 3;
+   case SLANG_SPEC_MAT24:
+      return 2;
+   case SLANG_SPEC_MAT42:
+      return 4;
+   case SLANG_SPEC_MAT34:
+      return 3;
+   case SLANG_SPEC_MAT43:
+      return 4;
+
+   default:
+      return 0;
+   }
+}
+
+
+/**
+ * Return the GL_* type that corresponds to a SLANG_SPEC_* type.
+ */
+GLenum
+_slang_gltype_from_specifier(const slang_type_specifier *type)
+{
+   switch (type->type) {
+   case SLANG_SPEC_BOOL:
+      return GL_BOOL;
+   case SLANG_SPEC_BVEC2:
+      return GL_BOOL_VEC2;
+   case SLANG_SPEC_BVEC3:
+      return GL_BOOL_VEC3;
+   case SLANG_SPEC_BVEC4:
+      return GL_BOOL_VEC4;
+   case SLANG_SPEC_INT:
+      return GL_INT;
+   case SLANG_SPEC_IVEC2:
+      return GL_INT_VEC2;
+   case SLANG_SPEC_IVEC3:
+      return GL_INT_VEC3;
+   case SLANG_SPEC_IVEC4:
+      return GL_INT_VEC4;
+   case SLANG_SPEC_FLOAT:
+      return GL_FLOAT;
+   case SLANG_SPEC_VEC2:
+      return GL_FLOAT_VEC2;
+   case SLANG_SPEC_VEC3:
+      return GL_FLOAT_VEC3;
+   case SLANG_SPEC_VEC4:
+      return GL_FLOAT_VEC4;
+   case SLANG_SPEC_MAT2:
+      return GL_FLOAT_MAT2;
+   case SLANG_SPEC_MAT3:
+      return GL_FLOAT_MAT3;
+   case SLANG_SPEC_MAT4:
+      return GL_FLOAT_MAT4;
+   case SLANG_SPEC_MAT23:
+      return GL_FLOAT_MAT2x3;
+   case SLANG_SPEC_MAT32:
+      return GL_FLOAT_MAT3x2;
+   case SLANG_SPEC_MAT24:
+      return GL_FLOAT_MAT2x4;
+   case SLANG_SPEC_MAT42:
+      return GL_FLOAT_MAT4x2;
+   case SLANG_SPEC_MAT34:
+      return GL_FLOAT_MAT3x4;
+   case SLANG_SPEC_MAT43:
+      return GL_FLOAT_MAT4x3;
+   case SLANG_SPEC_SAMPLER1D:
+      return GL_SAMPLER_1D;
+   case SLANG_SPEC_SAMPLER2D:
+      return GL_SAMPLER_2D;
+   case SLANG_SPEC_SAMPLER3D:
+      return GL_SAMPLER_3D;
+   case SLANG_SPEC_SAMPLERCUBE:
+      return GL_SAMPLER_CUBE;
+   case SLANG_SPEC_SAMPLER1DSHADOW:
+      return GL_SAMPLER_1D_SHADOW;
+   case SLANG_SPEC_SAMPLER2DSHADOW:
+      return GL_SAMPLER_2D_SHADOW;
+   case SLANG_SPEC_SAMPLER2DRECT:
+      return GL_SAMPLER_2D_RECT_ARB;
+   case SLANG_SPEC_SAMPLER2DRECTSHADOW:
+      return GL_SAMPLER_2D_RECT_SHADOW_ARB;
+   case SLANG_SPEC_ARRAY:
+      return _slang_gltype_from_specifier(type->_array);
+   case SLANG_SPEC_STRUCT:
+      /* fall-through */
+   default:
+      return GL_NONE;
+   }
+}
+
diff --git a/mesalib/src/mesa/shader/slang/slang_typeinfo.h b/mesalib/src/mesa/shader/slang/slang_typeinfo.h
new file mode 100644
index 000000000..e6fecd350
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_typeinfo.h
@@ -0,0 +1,239 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 2005-2006  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_TYPEINFO_H
+#define SLANG_TYPEINFO_H 1
+
+#include "main/imports.h"
+#include "main/mtypes.h"
+#include "slang_log.h"
+#include "slang_utility.h"
+#include "slang_vartable.h"
+
+
+struct slang_operation_;
+
+struct slang_name_space_;
+
+
+
+/**
+ * Holds complete information about vector swizzle - the <swizzle>
+ * array contains vector component source indices, where 0 is "x", 1
+ * is "y", 2 is "z" and 3 is "w".
+ * Example: "xwz" --> { 3, { 0, 3, 2, not used } }.
+ */
+typedef struct slang_swizzle_
+{
+   GLuint num_components;
+   GLuint swizzle[4];
+} slang_swizzle;
+
+extern GLboolean
+_slang_is_swizzle(const char *field, GLuint rows, slang_swizzle *swz);
+
+
+typedef enum slang_type_variant_
+{
+   SLANG_VARIANT,    /* the default */
+   SLANG_INVARIANT   /* indicates the "invariant" keyword */
+} slang_type_variant;
+
+
+typedef enum slang_type_centroid_
+{
+   SLANG_CENTER,    /* the default */
+   SLANG_CENTROID   /* indicates the "centroid" keyword */
+} slang_type_centroid;
+
+
+typedef enum slang_type_qualifier_
+{
+   SLANG_QUAL_NONE,
+   SLANG_QUAL_CONST,
+   SLANG_QUAL_ATTRIBUTE,
+   SLANG_QUAL_VARYING,
+   SLANG_QUAL_UNIFORM,
+   SLANG_QUAL_OUT,
+   SLANG_QUAL_INOUT,
+   SLANG_QUAL_FIXEDOUTPUT,      /* internal */
+   SLANG_QUAL_FIXEDINPUT        /* internal */
+} slang_type_qualifier;
+
+
+typedef enum slang_type_precision_
+{
+   SLANG_PREC_DEFAULT,
+   SLANG_PREC_LOW,
+   SLANG_PREC_MEDIUM,
+   SLANG_PREC_HIGH
+} slang_type_precision;
+
+
+/**
+ * The basic shading language types (float, vec4, mat3, etc)
+ */
+typedef enum slang_type_specifier_type_
+{
+   SLANG_SPEC_VOID,
+   SLANG_SPEC_BOOL,
+   SLANG_SPEC_BVEC2,
+   SLANG_SPEC_BVEC3,
+   SLANG_SPEC_BVEC4,
+   SLANG_SPEC_INT,
+   SLANG_SPEC_IVEC2,
+   SLANG_SPEC_IVEC3,
+   SLANG_SPEC_IVEC4,
+   SLANG_SPEC_FLOAT,
+   SLANG_SPEC_VEC2,
+   SLANG_SPEC_VEC3,
+   SLANG_SPEC_VEC4,
+   SLANG_SPEC_MAT2,
+   SLANG_SPEC_MAT3,
+   SLANG_SPEC_MAT4,
+   SLANG_SPEC_MAT23,
+   SLANG_SPEC_MAT32,
+   SLANG_SPEC_MAT24,
+   SLANG_SPEC_MAT42,
+   SLANG_SPEC_MAT34,
+   SLANG_SPEC_MAT43,
+   SLANG_SPEC_SAMPLER1D,
+   SLANG_SPEC_SAMPLER2D,
+   SLANG_SPEC_SAMPLER3D,
+   SLANG_SPEC_SAMPLERCUBE,
+   SLANG_SPEC_SAMPLER2DRECT,
+   SLANG_SPEC_SAMPLER1DSHADOW,
+   SLANG_SPEC_SAMPLER2DSHADOW,
+   SLANG_SPEC_SAMPLER2DRECTSHADOW,
+   SLANG_SPEC_STRUCT,
+   SLANG_SPEC_ARRAY
+} slang_type_specifier_type;
+
+
+extern slang_type_specifier_type
+slang_type_specifier_type_from_string(const char *);
+
+extern const char *
+slang_type_specifier_type_to_string(slang_type_specifier_type);
+
+
+/**
+ * Describes more sophisticated types, like structs and arrays.
+ */
+typedef struct slang_type_specifier_
+{
+   slang_type_specifier_type type;
+   struct slang_struct_ *_struct;         /**< if type == SLANG_SPEC_STRUCT */
+   struct slang_type_specifier_ *_array;  /**< if type == SLANG_SPEC_ARRAY */
+} slang_type_specifier;
+
+
+extern GLvoid
+slang_type_specifier_ctr(slang_type_specifier *);
+
+extern GLvoid
+slang_type_specifier_dtr(slang_type_specifier *);
+
+extern slang_type_specifier *
+slang_type_specifier_new(slang_type_specifier_type type,
+                         struct slang_struct_ *_struct,
+                         struct slang_type_specifier_ *_array);
+
+
+extern GLboolean
+slang_type_specifier_copy(slang_type_specifier *, const slang_type_specifier *);
+
+extern GLboolean
+slang_type_specifier_equal(const slang_type_specifier *,
+                           const slang_type_specifier *);
+
+
+extern GLboolean
+slang_type_specifier_compatible(const slang_type_specifier * x,
+                                const slang_type_specifier * y);
+
+
+typedef struct slang_fully_specified_type_
+{
+   slang_type_qualifier qualifier;
+   slang_type_specifier specifier;
+   slang_type_precision precision;
+   slang_type_variant variant;
+   slang_type_centroid centroid;
+   GLint array_len;           /**< -1 if not an array type */
+} slang_fully_specified_type;
+
+extern int
+slang_fully_specified_type_construct(slang_fully_specified_type *);
+
+extern void
+slang_fully_specified_type_destruct(slang_fully_specified_type *);
+
+extern int
+slang_fully_specified_type_copy(slang_fully_specified_type *,
+				const slang_fully_specified_type *);
+
+
+
+typedef struct slang_typeinfo_
+{
+   GLboolean can_be_referenced;
+   GLboolean is_swizzled;
+   slang_swizzle swz;
+   slang_type_specifier spec;
+   GLuint array_len;
+} slang_typeinfo;
+
+extern GLboolean
+slang_typeinfo_construct(slang_typeinfo *);
+
+extern GLvoid
+slang_typeinfo_destruct(slang_typeinfo *);
+
+
+extern GLboolean
+_slang_typeof_operation(struct slang_operation_ *,
+                         const struct slang_name_space_ *,
+                         slang_typeinfo *, slang_atom_pool *,
+                         slang_info_log *log);
+
+extern GLboolean
+_slang_type_is_matrix(slang_type_specifier_type);
+
+extern GLboolean
+_slang_type_is_vector(slang_type_specifier_type);
+
+extern GLboolean
+_slang_type_is_float_vec_mat(slang_type_specifier_type);
+
+extern slang_type_specifier_type
+_slang_type_base(slang_type_specifier_type);
+
+extern GLuint
+_slang_type_dim(slang_type_specifier_type);
+
+extern GLenum
+_slang_gltype_from_specifier(const slang_type_specifier *type);
+
+#endif
diff --git a/mesalib/src/mesa/shader/slang/slang_utility.c b/mesalib/src/mesa/shader/slang/slang_utility.c
new file mode 100644
index 000000000..3631e32b3
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_utility.c
@@ -0,0 +1,228 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+/**
+ * \file slang_utility.c
+ * slang utilities
+ * \author Michal Krol
+ */
+
+#include "main/imports.h"
+#include "slang_utility.h"
+#include "slang_mem.h"
+
+char *
+slang_string_concat (char *dst, const char *src)
+{
+   return _mesa_strcpy (dst + _mesa_strlen (dst), src);
+}
+
+
+/* slang_string */
+
+GLvoid
+slang_string_init (slang_string *self)
+{
+   self->data = NULL;
+   self->capacity = 0;
+   self->length = 0;
+   self->fail = GL_FALSE;
+}
+
+GLvoid
+slang_string_free (slang_string *self)
+{
+   if (self->data != NULL)
+      _mesa_free (self->data);
+}
+
+GLvoid
+slang_string_reset (slang_string *self)
+{
+   self->length = 0;
+   self->fail = GL_FALSE;
+}
+
+static GLboolean
+grow (slang_string *self, GLuint size)
+{
+   if (self->fail)
+      return GL_FALSE;
+   if (size > self->capacity) {
+      /* do not overflow 32-bit range */
+      assert (size < 0x80000000);
+
+      self->data = (char *) (_mesa_realloc (self->data, self->capacity, size * 2));
+      self->capacity = size * 2;
+      if (self->data == NULL) {
+         self->capacity = 0;
+         self->fail = GL_TRUE;
+         return GL_FALSE;
+      }
+   }
+   return GL_TRUE;
+}
+
+GLvoid
+slang_string_push (slang_string *self, const slang_string *str)
+{
+   if (str->fail) {
+      self->fail = GL_TRUE;
+      return;
+   }
+   if (grow (self, self->length + str->length)) {
+      _mesa_memcpy (&self->data[self->length], str->data, str->length);
+      self->length += str->length;
+   }
+}
+
+GLvoid
+slang_string_pushc (slang_string *self, const char c)
+{
+   if (grow (self, self->length + 1)) {
+      self->data[self->length] = c;
+      self->length++;
+   }
+}
+
+GLvoid
+slang_string_pushs (slang_string *self, const char *cstr, GLuint len)
+{
+   if (grow (self, self->length + len)) {
+      _mesa_memcpy (&self->data[self->length], cstr, len);
+      self->length += len;
+   }
+}
+
+GLvoid
+slang_string_pushi (slang_string *self, GLint i)
+{
+   char buffer[12];
+
+   _mesa_sprintf (buffer, "%d", i);
+   slang_string_pushs (self, buffer, strlen (buffer));
+}
+
+const char *
+slang_string_cstr (slang_string *self)
+{
+   if (grow (self, self->length + 1))
+      self->data[self->length] = '\0';
+   return self->data;
+}
+
+/* slang_atom_pool */
+
+void
+slang_atom_pool_construct(slang_atom_pool * pool)
+{
+   GLuint i;
+
+   for (i = 0; i < SLANG_ATOM_POOL_SIZE; i++)
+      pool->entries[i] = NULL;
+}
+
+void
+slang_atom_pool_destruct (slang_atom_pool * pool)
+{
+   GLuint i;
+
+   for (i = 0; i < SLANG_ATOM_POOL_SIZE; i++) {
+      slang_atom_entry * entry;
+		
+      entry = pool->entries[i];
+      while (entry != NULL) {
+         slang_atom_entry *next = entry->next;
+         _slang_free(entry->id);
+         _slang_free(entry);
+         entry = next;
+      }
+   }
+}
+
+/*
+ * Search the atom pool for an atom with a given name.
+ * If atom is not found, create and add it to the pool.
+ * Returns ATOM_NULL if the atom was not found and the function failed
+ * to create a new atom.
+ */
+slang_atom
+slang_atom_pool_atom(slang_atom_pool * pool, const char * id)
+{
+   GLuint hash;
+   const char * p = id;
+   slang_atom_entry ** entry;
+
+   /* Hash a given string to a number in the range [0, ATOM_POOL_SIZE). */
+   hash = 0;
+   while (*p != '\0') {
+      GLuint g;
+
+      hash = (hash << 4) + (GLuint) (*p++);
+      g = hash & 0xf0000000;
+      if (g != 0)
+         hash ^= g >> 24;
+      hash &= ~g;
+   }
+   hash %= SLANG_ATOM_POOL_SIZE;
+
+   /* Now the hash points to a linked list of atoms with names that
+    * have the same hash value.  Search the linked list for a given
+    * name.
+    */
+   entry = &pool->entries[hash];
+   while (*entry != NULL) {
+      /* If the same, return the associated atom. */
+      if (slang_string_compare((**entry).id, id) == 0)
+         return (slang_atom) (**entry).id;
+      /* Grab the next atom in the linked list. */
+      entry = &(**entry).next;
+   }
+
+   /* Okay, we have not found an atom. Create a new entry for it.
+    * Note that the <entry> points to the last entry's <next> field.
+    */
+   *entry = (slang_atom_entry *) _slang_alloc(sizeof(slang_atom_entry));
+   if (*entry == NULL)
+      return SLANG_ATOM_NULL;
+
+   /* Initialize a new entry. Because we'll need the actual name of
+    * the atom, we use the pointer to this string as an actual atom's
+    * value.
+    */
+   (**entry).next = NULL;
+   (**entry).id = _slang_strdup(id);
+   if ((**entry).id == NULL)
+      return SLANG_ATOM_NULL;
+   return (slang_atom) (**entry).id;
+}
+
+/**
+ * Return the name of a given atom.
+ */
+const char *
+slang_atom_pool_id(slang_atom_pool * pool, slang_atom atom)
+{
+   return (const char *) (atom);
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_utility.h b/mesalib/src/mesa/shader/slang/slang_utility.h
new file mode 100644
index 000000000..032c56181
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_utility.h
@@ -0,0 +1,100 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5.3
+ *
+ * Copyright (C) 2005-2007  Brian Paul   All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
+ * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+#ifndef SLANG_UTILITY_H
+#define SLANG_UTILITY_H
+
+
+/* Compile-time assertions.  If the expression is zero, try to declare an
+ * array of size [-1] to cause compilation error.
+ */
+#define static_assert(expr) do { int _array[(expr) ? 1 : -1]; (void) _array[0]; } while (0)
+
+
+#define slang_string_compare(str1, str2) _mesa_strcmp (str1, str2)
+#define slang_string_copy(dst, src) _mesa_strcpy (dst, src)
+#define slang_string_length(str) _mesa_strlen (str)
+
+char *slang_string_concat (char *, const char *);
+
+/* slang_string */
+
+typedef struct
+{
+   char *data;
+   GLuint length;
+   GLuint capacity;
+   GLboolean fail;
+} slang_string;
+
+GLvoid
+slang_string_init (slang_string *);
+
+GLvoid
+slang_string_free (slang_string *);
+
+GLvoid
+slang_string_reset (slang_string *);
+
+GLvoid
+slang_string_push (slang_string *, const slang_string *);
+
+GLvoid
+slang_string_pushc (slang_string *, const char);
+
+GLvoid
+slang_string_pushs (slang_string *, const char *, GLuint);
+
+GLvoid
+slang_string_pushi (slang_string *, GLint);
+
+const char *
+slang_string_cstr (slang_string *);
+
+/* slang_atom */
+
+typedef GLvoid *slang_atom;
+
+#define SLANG_ATOM_NULL ((slang_atom) 0)
+
+typedef struct slang_atom_entry_
+{
+	char *id;
+	struct slang_atom_entry_ *next;
+} slang_atom_entry;
+
+#define SLANG_ATOM_POOL_SIZE 1023
+
+typedef struct slang_atom_pool_
+{
+	slang_atom_entry *entries[SLANG_ATOM_POOL_SIZE];
+} slang_atom_pool;
+
+GLvoid slang_atom_pool_construct (slang_atom_pool *);
+GLvoid slang_atom_pool_destruct (slang_atom_pool *);
+slang_atom slang_atom_pool_atom (slang_atom_pool *, const char *);
+const char *slang_atom_pool_id (slang_atom_pool *, slang_atom);
+
+
+#endif
diff --git a/mesalib/src/mesa/shader/slang/slang_vartable.c b/mesalib/src/mesa/shader/slang/slang_vartable.c
new file mode 100644
index 000000000..a4ebacc09
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_vartable.c
@@ -0,0 +1,362 @@
+
+#include "main/imports.h"
+#include "shader/program.h"
+#include "shader/prog_print.h"
+#include "slang_compile.h"
+#include "slang_compile_variable.h"
+#include "slang_emit.h"
+#include "slang_mem.h"
+#include "slang_vartable.h"
+#include "slang_ir.h"
+
+
+static int dbg = 0;
+
+
+typedef enum {
+   FREE,
+   VAR,
+   TEMP
+} TempState;
+
+
+/**
+ * Variable/register info for one variable scope.
+ */
+struct table
+{
+   int Level;
+   int NumVars;
+   slang_variable **Vars;  /* array [NumVars] */
+
+   TempState Temps[MAX_PROGRAM_TEMPS * 4];  /* per-component state */
+   int ValSize[MAX_PROGRAM_TEMPS * 4];     /**< For debug only */
+
+   struct table *Parent;  /** Parent scope table */
+};
+
+
+/**
+ * A variable table is a stack of tables, one per scope.
+ */
+struct slang_var_table_
+{
+   GLint CurLevel;
+   GLuint MaxRegisters;
+   struct table *Top;  /**< Table at top of stack */
+};
+
+
+
+slang_var_table *
+_slang_new_var_table(GLuint maxRegisters)
+{
+   slang_var_table *vt
+      = (slang_var_table *) _slang_alloc(sizeof(slang_var_table));
+   if (vt) {
+      vt->MaxRegisters = maxRegisters;
+   }
+   return vt;
+}
+
+
+void
+_slang_delete_var_table(slang_var_table *vt)
+{
+   if (vt->Top) {
+      _mesa_problem(NULL, "non-empty var table in _slang_delete_var_table()");
+      return;
+   }
+   _slang_free(vt);
+}
+
+
+
+/**
+ * Create new table on top of vartable stack.
+ * Used when we enter a {} block.
+ */
+void
+_slang_push_var_table(slang_var_table *vt)
+{
+   struct table *t = (struct table *) _slang_alloc(sizeof(struct table));
+   if (t) {
+      t->Level = vt->CurLevel++;
+      t->Parent = vt->Top;
+      if (t->Parent) {
+         /* copy the info indicating which temp regs are in use */
+         memcpy(t->Temps, t->Parent->Temps, sizeof(t->Temps));
+         memcpy(t->ValSize, t->Parent->ValSize, sizeof(t->ValSize));
+      }
+      vt->Top = t;
+      if (dbg) printf("Pushing level %d\n", t->Level);
+   }
+}
+
+
+/**
+ * Pop top entry from variable table.
+ * Used when we leave a {} block.
+ */
+void
+_slang_pop_var_table(slang_var_table *vt)
+{
+   struct table *t = vt->Top;
+   int i;
+
+   if (dbg) printf("Popping level %d\n", t->Level);
+
+   /* free the storage allocated for each variable */
+   for (i = 0; i < t->NumVars; i++) {
+      slang_ir_storage *store = t->Vars[i]->store;
+      GLint j;
+      GLuint comp;
+      if (dbg) printf("  Free var %s, size %d at %d.%s\n",
+                      (char*) t->Vars[i]->a_name, store->Size,
+                      store->Index,
+                      _mesa_swizzle_string(store->Swizzle, 0, 0));
+
+      if (store->File == PROGRAM_SAMPLER) {
+         /* samplers have no storage */
+         continue;
+      }
+
+      if (store->Size == 1)
+         comp = GET_SWZ(store->Swizzle, 0);
+      else
+         comp = 0;
+
+      /* store->Index may be -1 if we run out of registers */
+      if (store->Index >= 0) {
+         for (j = 0; j < store->Size; j++) {
+            assert(t->Temps[store->Index * 4 + j + comp] == VAR);
+            t->Temps[store->Index * 4 + j + comp] = FREE;
+         }
+      }
+      store->Index = -1;
+   }
+   if (t->Parent) {
+      /* just verify that any remaining allocations in this scope 
+       * were for temps
+       */
+      for (i = 0; i < (int) vt->MaxRegisters * 4; i++) {
+         if (t->Temps[i] != FREE && t->Parent->Temps[i] == FREE) {
+            if (dbg) printf("  Free reg %d\n", i/4);
+            assert(t->Temps[i] == TEMP);
+         }
+      }
+   }
+
+   if (t->Vars) {
+      _slang_free(t->Vars);
+      t->Vars = NULL;
+   }
+
+   vt->Top = t->Parent;
+   _slang_free(t);
+   vt->CurLevel--;
+}
+
+
+/**
+ * Add a new variable to the given var/symbol table.
+ */
+void
+_slang_add_variable(slang_var_table *vt, slang_variable *v)
+{
+   struct table *t;
+   assert(vt);
+   t = vt->Top;
+   assert(t);
+   if (dbg) printf("Adding var %s, store %p\n", (char *) v->a_name, (void *) v->store);
+   t->Vars = (slang_variable **)
+      _slang_realloc(t->Vars,
+                     t->NumVars * sizeof(slang_variable *),
+                     (t->NumVars + 1) * sizeof(slang_variable *));
+   t->Vars[t->NumVars] = v;
+   t->NumVars++;
+}
+
+
+/**
+ * Look for variable by name in given table.
+ * If not found, Parent table will be searched.
+ */
+slang_variable *
+_slang_find_variable(const slang_var_table *vt, slang_atom name)
+{
+   struct table *t = vt->Top;
+   while (1) {
+      int i;
+      for (i = 0; i < t->NumVars; i++) {
+         if (t->Vars[i]->a_name == name)
+            return t->Vars[i];
+      }
+      if (t->Parent)
+         t = t->Parent;
+      else
+         return NULL;
+   }
+}
+
+
+/**
+ * Allocation helper.
+ * \param size  var size in floats
+ * \return  position for var, measured in floats
+ */
+static GLint
+alloc_reg(slang_var_table *vt, GLint size, GLboolean isTemp)
+{
+   struct table *t = vt->Top;
+   /* if size == 1, allocate anywhere, else, pos must be multiple of 4 */
+   const GLuint step = (size == 1) ? 1 : 4;
+   GLuint i, j;
+   assert(size > 0); /* number of floats */
+
+   for (i = 0; i <= vt->MaxRegisters * 4 - size; i += step) {
+      GLuint found = 0;
+      for (j = 0; j < (GLuint) size; j++) {
+         assert(i + j < 4 * MAX_PROGRAM_TEMPS);
+         if (i + j < vt->MaxRegisters * 4 && t->Temps[i + j] == FREE) {
+            found++;
+         }
+         else {
+            break;
+         }
+      }
+      if (found == size) {
+         /* found block of size free regs */
+         if (size > 1)
+            assert(i % 4 == 0);
+         for (j = 0; j < (GLuint) size; j++) {
+            assert(i + j < 4 * MAX_PROGRAM_TEMPS);
+            t->Temps[i + j] = isTemp ? TEMP : VAR;
+         }
+         assert(i < MAX_PROGRAM_TEMPS * 4);
+         t->ValSize[i] = size;
+         return i;
+      }
+   }
+
+   /* if we get here, we ran out of registers */
+   return -1;
+}
+
+
+/**
+ * Allocate temp register(s) for storing a variable.
+ * \param size  size needed, in floats
+ * \param swizzle  returns swizzle mask for accessing var in register
+ * \return  register allocated, or -1
+ */
+GLboolean
+_slang_alloc_var(slang_var_table *vt, slang_ir_storage *store)
+{
+   struct table *t = vt->Top;
+   int i;
+
+   if (store->File == PROGRAM_SAMPLER) {
+      /* don't really allocate storage */
+      store->Index = 0;
+      return GL_TRUE;
+   }
+
+   i = alloc_reg(vt, store->Size, GL_FALSE);
+   if (i < 0)
+      return GL_FALSE;
+
+   store->Index = i / 4;
+   store->Swizzle = _slang_var_swizzle(store->Size, i % 4);
+
+   if (dbg)
+      printf("Alloc var storage sz %d at %d.%s (level %d) store %p\n",
+             store->Size, store->Index,
+             _mesa_swizzle_string(store->Swizzle, 0, 0),
+             t->Level,
+             (void*) store);
+
+   return GL_TRUE;
+}
+
+
+
+/**
+ * Allocate temp register(s) for storing an unnamed intermediate value.
+ */
+GLboolean
+_slang_alloc_temp(slang_var_table *vt, slang_ir_storage *store)
+{
+   struct table *t = vt->Top;
+   const int i = alloc_reg(vt, store->Size, GL_TRUE);
+   if (i < 0)
+      return GL_FALSE;
+
+   assert(store->Index < 0);
+
+   store->Index = i / 4;
+   store->Swizzle = _slang_var_swizzle(store->Size, i % 4);
+
+   if (dbg) printf("Alloc temp sz %d at %d.%s (level %d) store %p\n",
+                   store->Size, store->Index,
+                   _mesa_swizzle_string(store->Swizzle, 0, 0), t->Level,
+                   (void *) store);
+
+   return GL_TRUE;
+}
+
+
+void
+_slang_free_temp(slang_var_table *vt, slang_ir_storage *store)
+{
+   struct table *t = vt->Top;
+   GLuint i;
+   GLuint r = store->Index;
+   assert(store->Size > 0);
+   assert(r >= 0);
+   assert(r + store->Size <= vt->MaxRegisters * 4);
+   if (dbg) printf("Free temp sz %d at %d.%s (level %d) store %p\n",
+                   store->Size, r,
+                   _mesa_swizzle_string(store->Swizzle, 0, 0),
+                   t->Level, (void *) store);
+   if (store->Size == 1) {
+      const GLuint comp = GET_SWZ(store->Swizzle, 0);
+      /* we can actually fail some of these assertions because of the
+       * troublesome IR_SWIZZLE handling.
+       */
+#if 0
+      assert(store->Swizzle == MAKE_SWIZZLE4(comp, comp, comp, comp));
+      assert(comp < 4);
+      assert(t->ValSize[r * 4 + comp] == 1);
+#endif
+      assert(t->Temps[r * 4 + comp] == TEMP);
+      t->Temps[r * 4 + comp] = FREE;
+   }
+   else {
+      /*assert(store->Swizzle == SWIZZLE_NOOP);*/
+      assert(t->ValSize[r*4] == store->Size);
+      for (i = 0; i < (GLuint) store->Size; i++) {
+         assert(t->Temps[r * 4 + i] == TEMP);
+         t->Temps[r * 4 + i] = FREE;
+      }
+   }
+}
+
+
+GLboolean
+_slang_is_temp(const slang_var_table *vt, const slang_ir_storage *store)
+{
+   struct table *t = vt->Top;
+   GLuint comp;
+   assert(store->Index >= 0);
+   assert(store->Index < (int) vt->MaxRegisters);
+   if (store->Swizzle == SWIZZLE_NOOP)
+      comp = 0;
+   else
+      comp = GET_SWZ(store->Swizzle, 0);
+
+   if (t->Temps[store->Index * 4 + comp] == TEMP)
+      return GL_TRUE;
+   else
+      return GL_FALSE;
+}
diff --git a/mesalib/src/mesa/shader/slang/slang_vartable.h b/mesalib/src/mesa/shader/slang/slang_vartable.h
new file mode 100644
index 000000000..94bcd63f4
--- /dev/null
+++ b/mesalib/src/mesa/shader/slang/slang_vartable.h
@@ -0,0 +1,42 @@
+
+#ifndef SLANG_VARTABLE_H
+#define SLANG_VARTABLE_H
+
+struct slang_ir_storage_;
+
+typedef struct slang_var_table_ slang_var_table;
+
+struct slang_variable_;
+
+extern slang_var_table *
+_slang_new_var_table(GLuint maxRegisters);
+
+extern void
+_slang_delete_var_table(slang_var_table *vt);
+
+extern void
+_slang_push_var_table(slang_var_table *parent);
+
+extern void
+_slang_pop_var_table(slang_var_table *t);
+
+extern void
+_slang_add_variable(slang_var_table *t, struct slang_variable_ *v);
+
+extern struct slang_variable_ *
+_slang_find_variable(const slang_var_table *t, slang_atom name);
+
+extern GLboolean
+_slang_alloc_var(slang_var_table *t, struct slang_ir_storage_ *store);
+
+extern GLboolean
+_slang_alloc_temp(slang_var_table *t, struct slang_ir_storage_ *store);
+
+extern void
+_slang_free_temp(slang_var_table *t, struct slang_ir_storage_ *store);
+
+extern GLboolean
+_slang_is_temp(const slang_var_table *t, const struct slang_ir_storage_ *store);
+
+
+#endif /* SLANG_VARTABLE_H */