Merge remote-tracking branch 'origin/released'

* origin/released:
  libX11 mesa xserver xkeyboard-config git update 1 aug 2013

35 files changed, 348 insertions, 245 deletions

diff --git a/mesalib/src/gallium/auxiliary/util/u_format_s3tc.c b/mesalib/src/gallium/auxiliary/util/u_format_s3tc.c
index fd628157b..11b46020b 100644
--- a/mesalib/src/gallium/auxiliary/util/u_format_s3tc.c
+++ b/mesalib/src/gallium/auxiliary/util/u_format_s3tc.c
@@ -111,7 +111,6 @@ util_format_s3tc_init(void)
    util_dl_proc fetch_2d_texel_rgba_dxt3;
    util_dl_proc fetch_2d_texel_rgba_dxt5;
    util_dl_proc tx_compress_dxtn;
-   char *force_s3tc_enable;
 
    if (!first_time)
       return;
@@ -122,15 +121,8 @@ util_format_s3tc_init(void)
 
    library = util_dl_open(DXTN_LIBNAME);
    if (!library) {
-      if ((force_s3tc_enable = getenv("force_s3tc_enable")) &&
-          !strcmp(force_s3tc_enable, "true")) {
-         debug_printf("couldn't open " DXTN_LIBNAME ", enabling DXTn due to "
-            "force_s3tc_enable=true environment variable\n");
-         util_format_s3tc_enabled = TRUE;
-      } else {
-         debug_printf("couldn't open " DXTN_LIBNAME ", software DXTn "
-            "compression/decompression unavailable\n");
-      }
+      debug_printf("couldn't open " DXTN_LIBNAME ", software DXTn "
+                   "compression/decompression unavailable\n");
       return;
    }
 
diff --git a/mesalib/src/gallium/auxiliary/util/u_inlines.h b/mesalib/src/gallium/auxiliary/util/u_inlines.h
index 6e65ee6c9..7a82f05c3 100644
--- a/mesalib/src/gallium/auxiliary/util/u_inlines.h
+++ b/mesalib/src/gallium/auxiliary/util/u_inlines.h
@@ -227,6 +227,12 @@ pipe_surface_equal(struct pipe_surface *s1, struct pipe_surface *s2)
  * Convenience wrappers for screen buffer functions.
  */
 
+
+/**
+ * Create a new resource.
+ * \param bind  bitmask of PIPE_BIND_x flags
+ * \param usage  bitmask of PIPE_USAGE_x flags
+ */
 static INLINE struct pipe_resource *
 pipe_buffer_create( struct pipe_screen *screen,
 		    unsigned bind,
@@ -247,12 +253,20 @@ pipe_buffer_create( struct pipe_screen *screen,
    return screen->resource_create(screen, &buffer);
 }
 
+
+/**
+ * Map a range of a resource.
+ * \param offset  start of region, in bytes 
+ * \param length  size of region, in bytes 
+ * \param access  bitmask of PIPE_TRANSFER_x flags
+ * \param transfer  returns a transfer object
+ */
 static INLINE void *
 pipe_buffer_map_range(struct pipe_context *pipe,
 		      struct pipe_resource *buffer,
 		      unsigned offset,
 		      unsigned length,
-		      unsigned usage,
+		      unsigned access,
 		      struct pipe_transfer **transfer)
 {
    struct pipe_box box;
@@ -264,7 +278,7 @@ pipe_buffer_map_range(struct pipe_context *pipe,
 
    u_box_1d(offset, length, &box);
 
-   map = pipe->transfer_map(pipe, buffer, 0, usage, &box, transfer);
+   map = pipe->transfer_map(pipe, buffer, 0, access, &box, transfer);
    if (map == NULL) {
       return NULL;
    }
@@ -273,13 +287,18 @@ pipe_buffer_map_range(struct pipe_context *pipe,
 }
 
 
+/**
+ * Map whole resource.
+ * \param access  bitmask of PIPE_TRANSFER_x flags
+ * \param transfer  returns a transfer object
+ */
 static INLINE void *
 pipe_buffer_map(struct pipe_context *pipe,
                 struct pipe_resource *buffer,
-                unsigned usage,
+                unsigned access,
                 struct pipe_transfer **transfer)
 {
-   return pipe_buffer_map_range(pipe, buffer, 0, buffer->width0, usage, transfer);
+   return pipe_buffer_map_range(pipe, buffer, 0, buffer->width0, access, transfer);
 }
 
 
@@ -322,12 +341,12 @@ pipe_buffer_write(struct pipe_context *pipe,
                   const void *data)
 {
    struct pipe_box box;
-   unsigned usage = PIPE_TRANSFER_WRITE;
+   unsigned access = PIPE_TRANSFER_WRITE;
 
    if (offset == 0 && size == buf->width0) {
-      usage |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
+      access |= PIPE_TRANSFER_DISCARD_WHOLE_RESOURCE;
    } else {
-      usage |= PIPE_TRANSFER_DISCARD_RANGE;
+      access |= PIPE_TRANSFER_DISCARD_RANGE;
    }
 
    u_box_1d(offset, size, &box);
@@ -335,7 +354,7 @@ pipe_buffer_write(struct pipe_context *pipe,
    pipe->transfer_inline_write( pipe,
                                 buf,
                                 0,
-                                usage,
+                                access,
                                 &box,
                                 data,
                                 size,
@@ -368,12 +387,18 @@ pipe_buffer_write_nooverlap(struct pipe_context *pipe,
                                0, 0);
 }
 
+
+/**
+ * Create a new resource and immediately put data into it
+ * \param bind  bitmask of PIPE_BIND_x flags
+ * \param usage  bitmask of PIPE_USAGE_x flags
+ */
 static INLINE struct pipe_resource *
 pipe_buffer_create_with_data(struct pipe_context *pipe,
                              unsigned bind,
                              unsigned usage,
                              unsigned size,
-                             void *ptr)
+                             const void *ptr)
 {
    struct pipe_resource *res = pipe_buffer_create(pipe->screen,
                                                   bind, usage, size);
@@ -403,11 +428,16 @@ pipe_buffer_read(struct pipe_context *pipe,
    pipe_buffer_unmap(pipe, src_transfer);
 }
 
+
+/**
+ * Map a resource for reading/writing.
+ * \param access  bitmask of PIPE_TRANSFER_x flags
+ */
 static INLINE void *
 pipe_transfer_map(struct pipe_context *context,
                   struct pipe_resource *resource,
                   unsigned level, unsigned layer,
-                  enum pipe_transfer_usage usage,
+                  unsigned access,
                   unsigned x, unsigned y,
                   unsigned w, unsigned h,
                   struct pipe_transfer **transfer)
@@ -417,15 +447,20 @@ pipe_transfer_map(struct pipe_context *context,
    return context->transfer_map(context,
                                 resource,
                                 level,
-                                usage,
+                                access,
                                 &box, transfer);
 }
 
+
+/**
+ * Map a 3D (texture) resource for reading/writing.
+ * \param access  bitmask of PIPE_TRANSFER_x flags
+ */
 static INLINE void *
 pipe_transfer_map_3d(struct pipe_context *context,
                      struct pipe_resource *resource,
                      unsigned level,
-                     enum pipe_transfer_usage usage,
+                     unsigned access,
                      unsigned x, unsigned y, unsigned z,
                      unsigned w, unsigned h, unsigned d,
                      struct pipe_transfer **transfer)
@@ -435,7 +470,7 @@ pipe_transfer_map_3d(struct pipe_context *context,
    return context->transfer_map(context,
                                 resource,
                                 level,
-                                usage,
+                                access,
                                 &box, transfer);
 }
 
@@ -463,9 +498,13 @@ pipe_set_constant_buffer(struct pipe_context *pipe, uint shader, uint index,
 }
 
 
-static INLINE boolean util_get_offset( 
-   const struct pipe_rasterizer_state *templ,
-   unsigned fill_mode)
+/**
+ * Get the polygon offset enable/disable flag for the given polygon fill mode.
+ * \param fill_mode  one of PIPE_POLYGON_MODE_POINT/LINE/FILL
+ */
+static INLINE boolean
+util_get_offset(const struct pipe_rasterizer_state *templ,
+                unsigned fill_mode)
 {
    switch(fill_mode) {
    case PIPE_POLYGON_MODE_POINT:
diff --git a/mesalib/src/glsl/glsl_lexer.ll b/mesalib/src/glsl/glsl_lexer.ll
index 93752307d..e24df8096 100644
--- a/mesalib/src/glsl/glsl_lexer.ll
+++ b/mesalib/src/glsl/glsl_lexer.ll
@@ -149,7 +149,7 @@ literal_integer(char *text, int len, struct _mesa_glsl_parse_state *state,
 %option bison-bridge bison-locations reentrant noyywrap
 %option nounput noyy_top_state
 %option never-interactive
-%option prefix="_mesa_glsl_"
+%option prefix="_mesa_glsl_lexer_"
 %option extra-type="struct _mesa_glsl_parse_state *"
 
 %x PP PRAGMA
diff --git a/mesalib/src/glsl/glsl_parser.yy b/mesalib/src/glsl/glsl_parser.yy
index bf312366b..fcc5620cd 100644
--- a/mesalib/src/glsl/glsl_parser.yy
+++ b/mesalib/src/glsl/glsl_parser.yy
@@ -31,14 +31,18 @@
 #include "glsl_types.h"
 #include "main/context.h"
 
-#define YYLEX_PARAM state->scanner
-
 #undef yyerror
 
 static void yyerror(YYLTYPE *loc, _mesa_glsl_parse_state *st, const char *msg)
 {
    _mesa_glsl_error(loc, st, "%s", msg);
 }
+
+static int
+_mesa_glsl_lex(YYSTYPE *val, YYLTYPE *loc, _mesa_glsl_parse_state *state)
+{
+   return _mesa_glsl_lexer_lex(val, loc, state->scanner);
+}
 %}
 
 %expect 0
@@ -55,7 +59,7 @@ static void yyerror(YYLTYPE *loc, _mesa_glsl_parse_state *st, const char *msg)
    @$.source = 0;
 }
 
-%lex-param   {void *scanner}
+%lex-param   {struct _mesa_glsl_parse_state *state}
 %parse-param {struct _mesa_glsl_parse_state *state}
 
 %union {
diff --git a/mesalib/src/glsl/glsl_parser_extras.cpp b/mesalib/src/glsl/glsl_parser_extras.cpp
index e36ba584a..a5bc20c23 100644
--- a/mesalib/src/glsl/glsl_parser_extras.cpp
+++ b/mesalib/src/glsl/glsl_parser_extras.cpp
@@ -74,7 +74,8 @@ _mesa_glsl_parse_state::_mesa_glsl_parse_state(struct gl_context *_ctx,
    this->num_builtins_to_link = 0;
 
    /* Set default language version and extensions */
-   this->language_version = 110;
+   this->language_version = ctx->Const.ForceGLSLVersion ?
+                            ctx->Const.ForceGLSLVersion : 110;
    this->es_shader = false;
    this->ARB_texture_rectangle_enable = true;
 
@@ -430,15 +431,6 @@ struct _mesa_glsl_extension {
     */
    const char *name;
 
-   /** True if this extension is available to vertex shaders */
-   bool avail_in_VS;
-
-   /** True if this extension is available to geometry shaders */
-   bool avail_in_GS;
-
-   /** True if this extension is available to fragment shaders */
-   bool avail_in_FS;
-
    /** True if this extension is available to desktop GL shaders */
    bool avail_in_GL;
 
@@ -485,9 +477,9 @@ struct _mesa_glsl_extension {
    void set_flags(_mesa_glsl_parse_state *state, ext_behavior behavior) const;
 };
 
-#define EXT(NAME, VS, GS, FS, GL, ES, SUPPORTED_FLAG)                   \
-   { "GL_" #NAME, VS, GS, FS, GL, ES, &gl_extensions::SUPPORTED_FLAG,   \
-         &_mesa_glsl_parse_state::NAME##_enable,                        \
+#define EXT(NAME, GL, ES, SUPPORTED_FLAG)                   \
+   { "GL_" #NAME, GL, ES, &gl_extensions::SUPPORTED_FLAG,   \
+         &_mesa_glsl_parse_state::NAME##_enable,            \
          &_mesa_glsl_parse_state::NAME##_warn }
 
 /**
@@ -495,31 +487,31 @@ struct _mesa_glsl_extension {
  * and the conditions under which they are supported.
  */
 static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
-   /*                                  target availability  API availability */
-   /* name                             VS     GS     FS     GL     ES         supported flag */
-   EXT(ARB_conservative_depth,         false, false, true,  true,  false,     ARB_conservative_depth),
-   EXT(ARB_draw_buffers,               false, false, true,  true,  false,     dummy_true),
-   EXT(ARB_draw_instanced,             true,  false, false, true,  false,     ARB_draw_instanced),
-   EXT(ARB_explicit_attrib_location,   true,  false, true,  true,  false,     ARB_explicit_attrib_location),
-   EXT(ARB_fragment_coord_conventions, true,  false, true,  true,  false,     ARB_fragment_coord_conventions),
-   EXT(ARB_texture_rectangle,          true,  false, true,  true,  false,     dummy_true),
-   EXT(EXT_texture_array,              true,  false, true,  true,  false,     EXT_texture_array),
-   EXT(ARB_shader_texture_lod,         true,  false, true,  true,  false,     ARB_shader_texture_lod),
-   EXT(ARB_shader_stencil_export,      false, false, true,  true,  false,     ARB_shader_stencil_export),
-   EXT(AMD_conservative_depth,         false, false, true,  true,  false,     ARB_conservative_depth),
-   EXT(AMD_shader_stencil_export,      false, false, true,  true,  false,     ARB_shader_stencil_export),
-   EXT(OES_texture_3D,                 true,  false, true,  false, true,      EXT_texture3D),
-   EXT(OES_EGL_image_external,         true,  false, true,  false, true,      OES_EGL_image_external),
-   EXT(ARB_shader_bit_encoding,        true,  true,  true,  true,  false,     ARB_shader_bit_encoding),
-   EXT(ARB_uniform_buffer_object,      true,  false, true,  true,  false,     ARB_uniform_buffer_object),
-   EXT(OES_standard_derivatives,       false, false, true,  false,  true,     OES_standard_derivatives),
-   EXT(ARB_texture_cube_map_array,     true,  false, true,  true,  false,     ARB_texture_cube_map_array),
-   EXT(ARB_shading_language_packing,   true,  false, true,  true,  false,     ARB_shading_language_packing),
-   EXT(ARB_shading_language_420pack,   true,  true,  true,  true,  false,     ARB_shading_language_420pack),
-   EXT(ARB_texture_multisample,        true,  false, true,  true,  false,     ARB_texture_multisample),
-   EXT(ARB_texture_query_lod,          false, false, true,  true,  false,     ARB_texture_query_lod),
-   EXT(ARB_gpu_shader5,                true,  true,  true,  true,  false,     ARB_gpu_shader5),
-   EXT(AMD_vertex_shader_layer,        true,  false, false, true,  false,     AMD_vertex_shader_layer),
+   /*                                  API availability */
+   /* name                             GL     ES         supported flag */
+   EXT(ARB_conservative_depth,         true,  false,     ARB_conservative_depth),
+   EXT(ARB_draw_buffers,               true,  false,     dummy_true),
+   EXT(ARB_draw_instanced,             true,  false,     ARB_draw_instanced),
+   EXT(ARB_explicit_attrib_location,   true,  false,     ARB_explicit_attrib_location),
+   EXT(ARB_fragment_coord_conventions, true,  false,     ARB_fragment_coord_conventions),
+   EXT(ARB_texture_rectangle,          true,  false,     dummy_true),
+   EXT(EXT_texture_array,              true,  false,     EXT_texture_array),
+   EXT(ARB_shader_texture_lod,         true,  false,     ARB_shader_texture_lod),
+   EXT(ARB_shader_stencil_export,      true,  false,     ARB_shader_stencil_export),
+   EXT(AMD_conservative_depth,         true,  false,     ARB_conservative_depth),
+   EXT(AMD_shader_stencil_export,      true,  false,     ARB_shader_stencil_export),
+   EXT(OES_texture_3D,                 false, true,      EXT_texture3D),
+   EXT(OES_EGL_image_external,         false, true,      OES_EGL_image_external),
+   EXT(ARB_shader_bit_encoding,        true,  false,     ARB_shader_bit_encoding),
+   EXT(ARB_uniform_buffer_object,      true,  false,     ARB_uniform_buffer_object),
+   EXT(OES_standard_derivatives,       false,  true,     OES_standard_derivatives),
+   EXT(ARB_texture_cube_map_array,     true,  false,     ARB_texture_cube_map_array),
+   EXT(ARB_shading_language_packing,   true,  false,     ARB_shading_language_packing),
+   EXT(ARB_shading_language_420pack,   true,  false,     ARB_shading_language_420pack),
+   EXT(ARB_texture_multisample,        true,  false,     ARB_texture_multisample),
+   EXT(ARB_texture_query_lod,          true,  false,     ARB_texture_query_lod),
+   EXT(ARB_gpu_shader5,                true,  false,     ARB_gpu_shader5),
+   EXT(AMD_vertex_shader_layer,        true,  false,     AMD_vertex_shader_layer),
 };
 
 #undef EXT
@@ -532,30 +524,6 @@ static const _mesa_glsl_extension _mesa_glsl_supported_extensions[] = {
 bool _mesa_glsl_extension::compatible_with_state(const _mesa_glsl_parse_state *
                                                  state) const
 {
-   /* Check that this extension matches the type of shader we are
-    * compiling to.
-    */
-   switch (state->target) {
-   case vertex_shader:
-      if (!this->avail_in_VS) {
-         return false;
-      }
-      break;
-   case geometry_shader:
-      if (!this->avail_in_GS) {
-         return false;
-      }
-      break;
-   case fragment_shader:
-      if (!this->avail_in_FS) {
-         return false;
-      }
-      break;
-   default:
-      assert (!"Unrecognized shader target");
-      return false;
-   }
-
    /* Check that this extension matches whether we are compiling
     * for desktop GL or GLES.
     */
diff --git a/mesalib/src/glsl/glsl_parser_extras.h b/mesalib/src/glsl/glsl_parser_extras.h
index bf665663e..45f5246f7 100644
--- a/mesalib/src/glsl/glsl_parser_extras.h
+++ b/mesalib/src/glsl/glsl_parser_extras.h
@@ -341,8 +341,8 @@ extern void _mesa_glsl_lexer_ctor(struct _mesa_glsl_parse_state *state,
 extern void _mesa_glsl_lexer_dtor(struct _mesa_glsl_parse_state *state);
 
 union YYSTYPE;
-extern int _mesa_glsl_lex(union YYSTYPE *yylval, YYLTYPE *yylloc, 
-			  void *scanner);
+extern int _mesa_glsl_lexer_lex(union YYSTYPE *yylval, YYLTYPE *yylloc,
+                                void *scanner);
 
 extern int _mesa_glsl_parse(struct _mesa_glsl_parse_state *);
 
diff --git a/mesalib/src/glsl/ir_function_detect_recursion.cpp b/mesalib/src/glsl/ir_function_detect_recursion.cpp
index 5df3ac518..280c4734a 100644
--- a/mesalib/src/glsl/ir_function_detect_recursion.cpp
+++ b/mesalib/src/glsl/ir_function_detect_recursion.cpp
@@ -319,7 +319,6 @@ emit_errors_linked(const void *key, void *data, void *closure)
 
    linker_error(prog, "function `%s' has static recursion.\n", proto);
    ralloc_free(proto);
-   prog->LinkStatus = false;
 }
 
 
diff --git a/mesalib/src/glsl/link_interface_blocks.cpp b/mesalib/src/glsl/link_interface_blocks.cpp
index b91860d03..928a88ee2 100644
--- a/mesalib/src/glsl/link_interface_blocks.cpp
+++ b/mesalib/src/glsl/link_interface_blocks.cpp
@@ -31,8 +31,9 @@
 #include "linker.h"
 #include "main/macros.h"
 
-bool
-validate_intrastage_interface_blocks(const gl_shader **shader_list,
+void
+validate_intrastage_interface_blocks(struct gl_shader_program *prog,
+                                     const gl_shader **shader_list,
                                      unsigned num_shaders)
 {
    glsl_symbol_table interfaces;
@@ -62,16 +63,17 @@ validate_intrastage_interface_blocks(const gl_shader **shader_list,
             interfaces.add_interface(iface_type->name, iface_type,
                                      (enum ir_variable_mode) var->mode);
          } else if (old_iface_type != iface_type) {
-            return false;
+            linker_error(prog, "definitions of interface block `%s' do not"
+                         " match\n", iface_type->name);
+            return;
          }
       }
    }
-
-   return true;
 }
 
-bool
-validate_interstage_interface_blocks(const gl_shader *producer,
+void
+validate_interstage_interface_blocks(struct gl_shader_program *prog,
+                                     const gl_shader *producer,
                                      const gl_shader *consumer)
 {
    glsl_symbol_table interfaces;
@@ -102,9 +104,10 @@ validate_interstage_interface_blocks(const gl_shader *producer,
       if (expected_type == NULL)
          continue;
 
-      if (var->interface_type != expected_type)
-         return false;
+      if (var->interface_type != expected_type) {
+         linker_error(prog, "definitions of interface block `%s' do not "
+                      "match\n", var->interface_type->name);
+         return;
+      }
    }
-
-   return true;
 }
diff --git a/mesalib/src/glsl/link_uniform_blocks.cpp b/mesalib/src/glsl/link_uniform_blocks.cpp
index c72d1d8f1..1083653c7 100644
--- a/mesalib/src/glsl/link_uniform_blocks.cpp
+++ b/mesalib/src/glsl/link_uniform_blocks.cpp
@@ -137,7 +137,7 @@ struct block {
    bool has_instance_name;
 };
 
-int
+unsigned
 link_uniform_blocks(void *mem_ctx,
                     struct gl_shader_program *prog,
                     struct gl_shader **shader_list,
diff --git a/mesalib/src/glsl/link_varyings.cpp b/mesalib/src/glsl/link_varyings.cpp
index 51cbdaa0e..2c7e4514e 100644
--- a/mesalib/src/glsl/link_varyings.cpp
+++ b/mesalib/src/glsl/link_varyings.cpp
@@ -43,7 +43,7 @@
 /**
  * Validate that outputs from one stage match inputs of another
  */
-bool
+void
 cross_validate_outputs_to_inputs(struct gl_shader_program *prog,
 				 gl_shader *producer, gl_shader *consumer)
 {
@@ -106,7 +106,7 @@ cross_validate_outputs_to_inputs(struct gl_shader_program *prog,
 			    producer_stage, output->name,
 			    output->type->name,
 			    consumer_stage, input->type->name);
-	       return false;
+	       return;
 	    }
 	 }
 
@@ -121,7 +121,7 @@ cross_validate_outputs_to_inputs(struct gl_shader_program *prog,
 			 (output->centroid) ? "has" : "lacks",
 			 consumer_stage,
 			 (input->centroid) ? "has" : "lacks");
-	    return false;
+	    return;
 	 }
 
 	 if (input->invariant != output->invariant) {
@@ -133,7 +133,7 @@ cross_validate_outputs_to_inputs(struct gl_shader_program *prog,
 			 (output->invariant) ? "has" : "lacks",
 			 consumer_stage,
 			 (input->invariant) ? "has" : "lacks");
-	    return false;
+	    return;
 	 }
 
 	 if (input->interpolation != output->interpolation) {
@@ -147,12 +147,10 @@ cross_validate_outputs_to_inputs(struct gl_shader_program *prog,
 			 output->interpolation_string(),
 			 consumer_stage,
 			 input->interpolation_string());
-	    return false;
+	    return;
 	 }
       }
    }
-
-   return true;
 }
 
 
diff --git a/mesalib/src/glsl/link_varyings.h b/mesalib/src/glsl/link_varyings.h
index 7f7be353b..cfc6e474f 100644
--- a/mesalib/src/glsl/link_varyings.h
+++ b/mesalib/src/glsl/link_varyings.h
@@ -214,7 +214,7 @@ private:
 };
 
 
-bool
+void
 cross_validate_outputs_to_inputs(struct gl_shader_program *prog,
 				 gl_shader *producer, gl_shader *consumer);
 
diff --git a/mesalib/src/glsl/linker.cpp b/mesalib/src/glsl/linker.cpp
index ac010cfbb..942f90615 100644
--- a/mesalib/src/glsl/linker.cpp
+++ b/mesalib/src/glsl/linker.cpp
@@ -340,12 +340,12 @@ count_attribute_slots(const glsl_type *t)
  *
  * \param shader  Vertex shader executable to be verified
  */
-bool
+void
 validate_vertex_shader_executable(struct gl_shader_program *prog,
 				  struct gl_shader *shader)
 {
    if (shader == NULL)
-      return true;
+      return;
 
    /* From the GLSL 1.10 spec, page 48:
     *
@@ -378,7 +378,7 @@ validate_vertex_shader_executable(struct gl_shader_program *prog,
       find.run(shader->ir);
       if (!find.variable_found()) {
 	 linker_error(prog, "vertex shader does not write to `gl_Position'\n");
-	 return false;
+	 return;
       }
    }
 
@@ -402,7 +402,7 @@ validate_vertex_shader_executable(struct gl_shader_program *prog,
       if (clip_vertex.variable_found() && clip_distance.variable_found()) {
          linker_error(prog, "vertex shader writes to both `gl_ClipVertex' "
                       "and `gl_ClipDistance'\n");
-         return false;
+         return;
       }
       prog->Vert.UsesClipDistance = clip_distance.variable_found();
       ir_variable *clip_distance_var =
@@ -410,8 +410,6 @@ validate_vertex_shader_executable(struct gl_shader_program *prog,
       if (clip_distance_var)
          prog->Vert.ClipDistanceArraySize = clip_distance_var->type->length;
    }
-
-   return true;
 }
 
 
@@ -420,12 +418,12 @@ validate_vertex_shader_executable(struct gl_shader_program *prog,
  *
  * \param shader  Fragment shader executable to be verified
  */
-bool
+void
 validate_fragment_shader_executable(struct gl_shader_program *prog,
 				    struct gl_shader *shader)
 {
    if (shader == NULL)
-      return true;
+      return;
 
    find_assignment_visitor frag_color("gl_FragColor");
    find_assignment_visitor frag_data("gl_FragData");
@@ -436,10 +434,7 @@ validate_fragment_shader_executable(struct gl_shader_program *prog,
    if (frag_color.variable_found() && frag_data.variable_found()) {
       linker_error(prog,  "fragment shader writes to both "
 		   "`gl_FragColor' and `gl_FragData'\n");
-      return false;
    }
-
-   return true;
 }
 
 
@@ -469,7 +464,7 @@ mode_string(const ir_variable *var)
 /**
  * Perform validation of global variables used across multiple shaders
  */
-bool
+void
 cross_validate_globals(struct gl_shader_program *prog,
 		       struct gl_shader **shader_list,
 		       unsigned num_shaders,
@@ -524,7 +519,7 @@ cross_validate_globals(struct gl_shader_program *prog,
 			       mode_string(var),
 			       var->name, var->type->name,
 			       existing->type->name);
-		  return false;
+		  return;
 	       }
 	    }
 
@@ -534,7 +529,7 @@ cross_validate_globals(struct gl_shader_program *prog,
 		     linker_error(prog, "explicit locations for %s "
 				  "`%s' have differing values\n",
 				  mode_string(var), var->name);
-		     return false;
+		     return;
 	       }
 
 	       existing->location = var->location;
@@ -553,7 +548,7 @@ cross_validate_globals(struct gl_shader_program *prog,
                   linker_error(prog, "explicit bindings for %s "
                                "`%s' have differing values\n",
                                mode_string(var), var->name);
-                  return false;
+                  return;
                }
 
                existing->binding = var->binding;
@@ -614,7 +609,7 @@ cross_validate_globals(struct gl_shader_program *prog,
 		     linker_error(prog, "initializers for %s "
 				  "`%s' have differing values\n",
 				  mode_string(var), var->name);
-		     return false;
+		     return;
 		  }
 	       } else {
 		  /* If the first-seen instance of a particular uniform did not
@@ -643,7 +638,7 @@ cross_validate_globals(struct gl_shader_program *prog,
 			       "shared global variable `%s' has multiple "
 			       "non-constant initializers.\n",
 			       var->name);
-		  return false;
+		  return;
 	       }
 
 	       /* Some instance had an initializer, so keep track of that.  In
@@ -658,31 +653,29 @@ cross_validate_globals(struct gl_shader_program *prog,
 	       linker_error(prog, "declarations for %s `%s' have "
 			    "mismatching invariant qualifiers\n",
 			    mode_string(var), var->name);
-	       return false;
+	       return;
 	    }
             if (existing->centroid != var->centroid) {
                linker_error(prog, "declarations for %s `%s' have "
 			    "mismatching centroid qualifiers\n",
 			    mode_string(var), var->name);
-               return false;
+               return;
             }
 	 } else
 	    variables.add_variable(var);
       }
    }
-
-   return true;
 }
 
 
 /**
  * Perform validation of uniforms used across multiple shader stages
  */
-bool
+void
 cross_validate_uniforms(struct gl_shader_program *prog)
 {
-   return cross_validate_globals(prog, prog->_LinkedShaders,
-				 MESA_SHADER_TYPES, true);
+   cross_validate_globals(prog, prog->_LinkedShaders,
+                          MESA_SHADER_TYPES, true);
 }
 
 /**
@@ -955,21 +948,21 @@ link_intrastage_shaders(void *mem_ctx,
 
    /* Check that global variables defined in multiple shaders are consistent.
     */
-   if (!cross_validate_globals(prog, shader_list, num_shaders, false))
+   cross_validate_globals(prog, shader_list, num_shaders, false);
+   if (!prog->LinkStatus)
       return NULL;
 
    /* Check that interface blocks defined in multiple shaders are consistent.
     */
-   if (!validate_intrastage_interface_blocks((const gl_shader **)shader_list,
-                                             num_shaders))
+   validate_intrastage_interface_blocks(prog, (const gl_shader **)shader_list,
+                                        num_shaders);
+   if (!prog->LinkStatus)
       return NULL;
 
-   /* Check that uniform blocks between shaders for a stage agree. */
-   const int num_uniform_blocks =
+   /* Link up uniform blocks defined within this stage. */
+   const unsigned num_uniform_blocks =
       link_uniform_blocks(mem_ctx, prog, shader_list, num_shaders,
                           &uniform_blocks);
-   if (num_uniform_blocks < 0)
-      return NULL;
 
    /* Check that there is only a single definition of each function signature
     * across all shaders.
@@ -1529,7 +1522,7 @@ store_fragdepth_layout(struct gl_shader_program *prog)
 /**
  * Validate the resources used by a program versus the implementation limits
  */
-static bool
+static void
 check_resources(struct gl_context *ctx, struct gl_shader_program *prog)
 {
    static const char *const shader_names[MESA_SHADER_TYPES] = {
@@ -1626,8 +1619,6 @@ check_resources(struct gl_context *ctx, struct gl_shader_program *prog)
 	 }
       }
    }
-
-   return prog->LinkStatus;
 }
 
 void
@@ -1638,7 +1629,7 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
 
    void *mem_ctx = ralloc_context(NULL); // temporary linker context
 
-   prog->LinkStatus = false;
+   prog->LinkStatus = true; /* All error paths will set this to false */
    prog->Validated = false;
    prog->_Used = false;
 
@@ -1724,10 +1715,11 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
 	 link_intrastage_shaders(mem_ctx, ctx, prog, vert_shader_list,
 				 num_vert_shaders);
 
-      if (sh == NULL)
+      if (!prog->LinkStatus)
 	 goto done;
 
-      if (!validate_vertex_shader_executable(prog, sh))
+      validate_vertex_shader_executable(prog, sh);
+      if (!prog->LinkStatus)
 	 goto done;
 
       _mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_VERTEX],
@@ -1739,10 +1731,11 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
 	 link_intrastage_shaders(mem_ctx, ctx, prog, frag_shader_list,
 				 num_frag_shaders);
 
-      if (sh == NULL)
+      if (!prog->LinkStatus)
 	 goto done;
 
-      if (!validate_fragment_shader_executable(prog, sh))
+      validate_fragment_shader_executable(prog, sh);
+      if (!prog->LinkStatus)
 	 goto done;
 
       _mesa_reference_shader(ctx, &prog->_LinkedShaders[MESA_SHADER_FRAGMENT],
@@ -1753,36 +1746,36 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
     * performed, then locations are assigned for uniforms, attributes, and
     * varyings.
     */
-   if (cross_validate_uniforms(prog)) {
-      unsigned prev;
+   cross_validate_uniforms(prog);
+   if (!prog->LinkStatus)
+      goto done;
 
-      for (prev = 0; prev < MESA_SHADER_TYPES; prev++) {
-	 if (prog->_LinkedShaders[prev] != NULL)
-	    break;
-      }
+   unsigned prev;
 
-      /* Validate the inputs of each stage with the output of the preceding
-       * stage.
-       */
-      for (unsigned i = prev + 1; i < MESA_SHADER_TYPES; i++) {
-	 if (prog->_LinkedShaders[i] == NULL)
-	    continue;
+   for (prev = 0; prev < MESA_SHADER_TYPES; prev++) {
+      if (prog->_LinkedShaders[prev] != NULL)
+         break;
+   }
 
-         if (!validate_interstage_interface_blocks(prog->_LinkedShaders[prev],
-                                                   prog->_LinkedShaders[i])) {
-            linker_error(prog, "interface block mismatch between shader stages\n");
-            goto done;
-         }
+   /* Validate the inputs of each stage with the output of the preceding
+    * stage.
+    */
+   for (unsigned i = prev + 1; i < MESA_SHADER_TYPES; i++) {
+      if (prog->_LinkedShaders[i] == NULL)
+         continue;
 
-	 if (!cross_validate_outputs_to_inputs(prog,
-					       prog->_LinkedShaders[prev],
-					       prog->_LinkedShaders[i]))
-	    goto done;
+      validate_interstage_interface_blocks(prog, prog->_LinkedShaders[prev],
+                                           prog->_LinkedShaders[i]);
+      if (!prog->LinkStatus)
+         goto done;
 
-	 prev = i;
-      }
+      cross_validate_outputs_to_inputs(prog,
+                                       prog->_LinkedShaders[prev],
+                                       prog->_LinkedShaders[i]);
+      if (!prog->LinkStatus)
+         goto done;
 
-      prog->LinkStatus = true;
+      prev = i;
    }
 
 
@@ -1971,7 +1964,8 @@ link_shaders(struct gl_context *ctx, struct gl_shader_program *prog)
    link_assign_uniform_locations(prog);
    store_fragdepth_layout(prog);
 
-   if (!check_resources(ctx, prog))
+   check_resources(ctx, prog);
+   if (!prog->LinkStatus)
       goto done;
 
    /* OpenGL ES requires that a vertex shader and a fragment shader both be
diff --git a/mesalib/src/glsl/linker.h b/mesalib/src/glsl/linker.h
index 2fe2410c2..0ce747d6c 100644
--- a/mesalib/src/glsl/linker.h
+++ b/mesalib/src/glsl/linker.h
@@ -53,19 +53,21 @@ extern bool
 link_uniform_blocks_are_compatible(const gl_uniform_block *a,
 				   const gl_uniform_block *b);
 
-extern int
+extern unsigned
 link_uniform_blocks(void *mem_ctx,
                     struct gl_shader_program *prog,
                     struct gl_shader **shader_list,
                     unsigned num_shaders,
                     struct gl_uniform_block **blocks_ret);
 
-bool
-validate_intrastage_interface_blocks(const gl_shader **shader_list,
+void
+validate_intrastage_interface_blocks(struct gl_shader_program *prog,
+                                     const gl_shader **shader_list,
                                      unsigned num_shaders);
 
-bool
-validate_interstage_interface_blocks(const gl_shader *producer,
+void
+validate_interstage_interface_blocks(struct gl_shader_program *prog,
+                                     const gl_shader *producer,
                                      const gl_shader *consumer);
 
 /**
diff --git a/mesalib/src/mesa/drivers/dri/common/drirc b/mesalib/src/mesa/drivers/dri/common/drirc
index 556d1b599..ebc04cd9b 100644
--- a/mesalib/src/mesa/drivers/dri/common/drirc
+++ b/mesalib/src/mesa/drivers/dri/common/drirc
@@ -1,33 +1,75 @@
+<!--
+
+============================================
+Application bugs worked around in this file:
+============================================
+
+* Various Unigine products don't use the #version and #extension GLSL
+  directives, meaning they only get GLSL 1.10 and no extensions for their
+  shaders.
+  Enabling all extensions for Unigine fixes most issues, but the GLSL version
+  is still 1.10.
+
+* Unigine Heaven 3.0 with ARB_texture_multisample uses a "ivec4 * vec4"
+  expression, which fails to compile with GLSL 1.10.
+  Adding "#version 130" fixes this.
+
+* Unigine Heaven 3.0 with ARB_shader_bit_encoding uses the uint keyword, which
+  fails to compile with GLSL 1.10.
+  Adding "#version 130" fixes this.
+
+* Unigine Heaven 3.0 with ARB_shader_bit_encoding uses a "uint & int"
+  expression, which fails (and should fail) to compile with any GLSL version.
+  Disabling ARB_shader_bit_encoding fixes this.
+
+TODO: document the other workarounds.
+
+-->
+
 <driconf>
-    <device screen="0" driver="i965">
+    <!-- Please always enable app-specific workarounds for all drivers and
+         screens. -->
+    <device>
         <application name="Unigine Sanctuary" executable="Sanctuary">
             <option name="force_glsl_extensions_warn" value="true" />
             <option name="disable_blend_func_extended" value="true" />
 	</application>
+
         <application name="Unigine Tropics" executable="Tropics">
             <option name="force_glsl_extensions_warn" value="true" />
             <option name="disable_blend_func_extended" value="true" />
 	</application>
+
         <application name="Unigine Heaven (32-bit)" executable="heaven_x86">
             <option name="force_glsl_extensions_warn" value="true" />
             <option name="disable_blend_func_extended" value="true" />
+            <option name="force_glsl_version" value="130" />
+            <option name="disable_shader_bit_encoding" value="true" />
 	</application>
+
         <application name="Unigine Heaven (64-bit)" executable="heaven_x64">
             <option name="force_glsl_extensions_warn" value="true" />
             <option name="disable_blend_func_extended" value="true" />
+            <option name="force_glsl_version" value="130" />
+            <option name="disable_shader_bit_encoding" value="true" />
 	</application>
+
         <application name="Unigine OilRush (32-bit)" executable="OilRush_x86">
             <option name="disable_blend_func_extended" value="true" />
 	</application>
+
         <application name="Unigine OilRush (64-bit)" executable="OilRush_x64">
             <option name="disable_blend_func_extended" value="true" />
 	</application>
+
         <application name="Savage 2" executable="savage2.bin">
             <option name="disable_glsl_line_continuations" value="true" />
         </application>
+
         <application name="Topogun (32-bit)" executable="topogun32">
             <option name="always_have_depth_buffer" value="true" />
         </application>
+
         <application name="Topogun (64-bit)" executable="topogun64">
             <option name="always_have_depth_buffer" value="true" />
         </application>
diff --git a/mesalib/src/mesa/drivers/dri/common/xmlconfig.c b/mesalib/src/mesa/drivers/dri/common/xmlconfig.c
index 72483a42a..5c97c20fc 100644
--- a/mesalib/src/mesa/drivers/dri/common/xmlconfig.c
+++ b/mesalib/src/mesa/drivers/dri/common/xmlconfig.c
@@ -812,7 +812,9 @@ static void parseOptConfAttr (struct OptConfData *data, const XML_Char **attr) {
 	driOptionCache *cache = data->cache;
 	GLuint opt = findOption (cache, name);
 	if (cache->info[opt].name == NULL)
-	    XML_WARNING ("undefined option: %s.", name);
+            /* don't use XML_WARNING, drirc defines options for all drivers,
+             * but not all drivers support them */
+            return;
 	else if (getenv (cache->info[opt].name))
 	  /* don't use XML_WARNING, we want the user to see this! */
 	    fprintf (stderr, "ATTENTION: option value of option %s ignored.\n",
diff --git a/mesalib/src/mesa/drivers/dri/common/xmlpool/t_options.h b/mesalib/src/mesa/drivers/dri/common/xmlpool/t_options.h
index ca4772003..3bf804a17 100644
--- a/mesalib/src/mesa/drivers/dri/common/xmlpool/t_options.h
+++ b/mesalib/src/mesa/drivers/dri/common/xmlpool/t_options.h
@@ -95,6 +95,16 @@ DRI_CONF_OPT_BEGIN_B(disable_glsl_line_continuations, def) \
         DRI_CONF_DESC(en,gettext("Disable backslash-based line continuations in GLSL source")) \
 DRI_CONF_OPT_END
 
+#define DRI_CONF_DISABLE_SHADER_BIT_ENCODING(def) \
+DRI_CONF_OPT_BEGIN_B(disable_shader_bit_encoding, def) \
+        DRI_CONF_DESC(en,gettext("Disable GL_ARB_shader_bit_encoding")) \
+DRI_CONF_OPT_END
+
+#define DRI_CONF_FORCE_GLSL_VERSION(def) \
+DRI_CONF_OPT_BEGIN_V(force_glsl_version, int, def, "0:999") \
+        DRI_CONF_DESC(en,gettext("Force a default GLSL version for shaders that lack an explicit #version line")) \
+DRI_CONF_OPT_END
+
 
 
 /**
@@ -266,15 +276,6 @@ DRI_CONF_OPT_BEGIN_V(texture_units,int,def, # min ":" # max ) \
         DRI_CONF_DESC(en,gettext("Number of texture units used")) \
 DRI_CONF_OPT_END
 
-#define DRI_CONF_ALLOW_LARGE_TEXTURES(def) \
-DRI_CONF_OPT_BEGIN_V(allow_large_textures,enum,def,"0:2") \
-	DRI_CONF_DESC_BEGIN(en,gettext("Support larger textures not guaranteed to fit into graphics memory")) \
-		DRI_CONF_ENUM(0,gettext("No")) \
-		DRI_CONF_ENUM(1,gettext("At least 1 texture must fit under worst-case assumptions")) \
-		DRI_CONF_ENUM(2,gettext("Announce hardware limits")) \
-	DRI_CONF_DESC_END \
-DRI_CONF_OPT_END
-
 #define DRI_CONF_TEXTURE_BLEND_QUALITY(def,range) \
 DRI_CONF_OPT_BEGIN_V(texture_blend_quality,float,def,range) \
 	DRI_CONF_DESC(en,gettext("Texture filtering quality vs. speed, AKA “brilinear” texture filtering")) \
diff --git a/mesalib/src/mesa/main/extensions.c b/mesalib/src/mesa/main/extensions.c
index 4e46cf095..1a040ee3b 100644
--- a/mesalib/src/mesa/main/extensions.c
+++ b/mesalib/src/mesa/main/extensions.c
@@ -275,6 +275,7 @@ static const struct extension extension_table[] = {
    { "GL_OES_stencil4",                            o(dummy_false),                     DISABLE,                2005 },
    { "GL_OES_stencil8",                            o(dummy_true),                                   ES1 | ES2, 2005 },
    { "GL_OES_stencil_wrap",                        o(dummy_true),                                   ES1,       2002 },
+   { "GL_OES_surfaceless_context",                 o(dummy_true),                                   ES1 | ES2, 2012 },
    { "GL_OES_texture_3D",                          o(EXT_texture3D),                                      ES2, 2005 },
    { "GL_OES_texture_cube_map",                    o(ARB_texture_cube_map),                         ES1,       2007 },
    { "GL_OES_texture_env_crossbar",                o(ARB_texture_env_crossbar),                     ES1,       2005 },
diff --git a/mesalib/src/mesa/main/fbobject.c b/mesalib/src/mesa/main/fbobject.c
index a29f1ab13..bf7e85c88 100644
--- a/mesalib/src/mesa/main/fbobject.c
+++ b/mesalib/src/mesa/main/fbobject.c
@@ -2141,8 +2141,12 @@ _mesa_CheckFramebufferStatus(GLenum target)
    }
 
    if (_mesa_is_winsys_fbo(buffer)) {
-      /* The window system / default framebuffer is always complete */
-      return GL_FRAMEBUFFER_COMPLETE_EXT;
+      /* EGL_KHR_surfaceless_context allows the winsys FBO to be incomplete. */
+      if (buffer != &IncompleteFramebuffer) {
+         return GL_FRAMEBUFFER_COMPLETE_EXT;
+      } else {
+         return GL_FRAMEBUFFER_UNDEFINED;
+      }
    }
 
    /* No need to flush here */
diff --git a/mesalib/src/mesa/main/mipmap.c b/mesalib/src/mesa/main/mipmap.c
index 583963232..180f89116 100644
--- a/mesalib/src/mesa/main/mipmap.c
+++ b/mesalib/src/mesa/main/mipmap.c
@@ -2024,7 +2024,7 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
    GLubyte *temp_src = NULL, *temp_dst = NULL;
    GLenum temp_datatype;
    GLenum temp_base_format;
-   GLubyte **temp_src_slices, **temp_dst_slices;
+   GLubyte **temp_src_slices = NULL, **temp_dst_slices = NULL;
 
    /* only two types of compressed textures at this time */
    assert(texObj->Target == GL_TEXTURE_2D ||
@@ -2063,11 +2063,8 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
    temp_dst_slices = malloc(srcImage->Depth * sizeof(GLubyte *));
 
    if (!temp_src || !temp_src_slices || !temp_dst_slices) {
-      free(temp_src);
-      free(temp_src_slices);
-      free(temp_dst_slices);
       _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
-      return;
+      goto end;
    }
 
    /* decompress base image to the temporary src buffer */
@@ -2119,7 +2116,7 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
 	 temp_dst = malloc(temp_dst_img_stride * dstDepth);
 	 if (!temp_dst) {
 	    _mesa_error(ctx, GL_OUT_OF_MEMORY, "generate mipmaps");
-	    break;
+            goto end;
 	 }
       }
 
@@ -2127,8 +2124,7 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
       dstImage = _mesa_get_tex_image(ctx, texObj, target, level + 1);
       if (!dstImage) {
          _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
-         free(temp_dst);
-         return;
+         goto end;
       }
 
       /* for 2D arrays, setup array[depth] of slice pointers */
@@ -2153,8 +2149,8 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
                                       dstWidth, dstHeight, dstDepth,
                                       border, srcImage->InternalFormat,
                                       srcImage->TexFormat)) {
-         free(temp_dst);
-         return;
+         /* all done */
+         goto end;
       }
 
       /* The image space was allocated above so use glTexSubImage now */
@@ -2173,6 +2169,7 @@ generate_mipmap_compressed(struct gl_context *ctx, GLenum target,
       }
    } /* loop over mipmap levels */
 
+end:
    free(temp_src);
    free(temp_dst);
    free(temp_src_slices);
diff --git a/mesalib/src/mesa/main/mtypes.h b/mesalib/src/mesa/main/mtypes.h
index aba7d845b..5bb680745 100644
--- a/mesalib/src/mesa/main/mtypes.h
+++ b/mesalib/src/mesa/main/mtypes.h
@@ -2402,6 +2402,7 @@ struct gl_shader_program
 #define GLSL_NOP_FRAG 0x40  /**< Force no-op fragment shaders */
 #define GLSL_USE_PROG 0x80  /**< Log glUseProgram calls */
 #define GLSL_REPORT_ERRORS 0x100  /**< Print compilation errors */
+#define GLSL_DUMP_ON_ERROR 0x200 /**< Dump shaders to stderr on compile error */
 
 
 /**
@@ -2873,6 +2874,12 @@ struct gl_constants
    GLboolean ForceGLSLExtensionsWarn;
 
    /**
+    * If non-zero, forces GLSL shaders without the #version directive to behave
+    * as if they began with "#version ForceGLSLVersion".
+    */
+   GLuint ForceGLSLVersion;
+
+   /**
     * Does the driver support real 32-bit integers?  (Otherwise, integers are
     * simulated via floats.)
     */
diff --git a/mesalib/src/mesa/main/shaderapi.c b/mesalib/src/mesa/main/shaderapi.c
index 4cc0357b1..c349b0cb5 100644
--- a/mesalib/src/mesa/main/shaderapi.c
+++ b/mesalib/src/mesa/main/shaderapi.c
@@ -71,7 +71,9 @@ get_shader_flags(void)
    const char *env = _mesa_getenv("MESA_GLSL");
 
    if (env) {
-      if (strstr(env, "dump"))
+      if (strstr(env, "dump_on_error"))
+         flags |= GLSL_DUMP_ON_ERROR;
+      else if (strstr(env, "dump"))
          flags |= GLSL_DUMP;
       if (strstr(env, "log"))
          flags |= GLSL_LOG;
@@ -783,10 +785,17 @@ compile_shader(struct gl_context *ctx, GLuint shaderObj)
 
    }
 
-   if (sh->CompileStatus == GL_FALSE && 
-       (ctx->Shader.Flags & GLSL_REPORT_ERRORS)) {
-      _mesa_debug(ctx, "Error compiling shader %u:\n%s\n",
-                  sh->Name, sh->InfoLog);
+   if (!sh->CompileStatus) {
+      if (ctx->Shader.Flags & GLSL_DUMP_ON_ERROR) {
+         fprintf(stderr, "GLSL source for %s shader %d:\n",
+                 _mesa_glsl_shader_target_name(sh->Type), sh->Name);
+         fprintf(stderr, "%s\n", sh->Source);
+      }
+
+      if (ctx->Shader.Flags & GLSL_REPORT_ERRORS) {
+         _mesa_debug(ctx, "Error compiling shader %u:\n%s\n",
+                     sh->Name, sh->InfoLog);
+      }
    }
 }
 
diff --git a/mesalib/src/mesa/main/teximage.c b/mesalib/src/mesa/main/teximage.c
index 111849655..b719fc856 100644
--- a/mesalib/src/mesa/main/teximage.c
+++ b/mesalib/src/mesa/main/teximage.c
@@ -1097,24 +1097,34 @@ _mesa_get_tex_max_num_levels(GLenum target, GLsizei width, GLsizei height,
    switch (target) {
    case GL_TEXTURE_1D:
    case GL_TEXTURE_1D_ARRAY:
+   case GL_PROXY_TEXTURE_1D:
+   case GL_PROXY_TEXTURE_1D_ARRAY:
       size = width;
       break;
    case GL_TEXTURE_CUBE_MAP:
    case GL_TEXTURE_CUBE_MAP_ARRAY:
+   case GL_PROXY_TEXTURE_CUBE_MAP:
+   case GL_PROXY_TEXTURE_CUBE_MAP_ARRAY:
       ASSERT(width == height);
       size = width;
       break;
    case GL_TEXTURE_2D:
    case GL_TEXTURE_2D_ARRAY:
+   case GL_PROXY_TEXTURE_2D:
+   case GL_PROXY_TEXTURE_2D_ARRAY:
       size = MAX2(width, height);
       break;
    case GL_TEXTURE_3D:
+   case GL_PROXY_TEXTURE_3D:
       size = MAX3(width, height, depth);
       break;
    case GL_TEXTURE_RECTANGLE:
    case GL_TEXTURE_EXTERNAL_OES:
    case GL_TEXTURE_2D_MULTISAMPLE:
    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+   case GL_PROXY_TEXTURE_RECTANGLE:
+   case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
+   case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
       return 1;
    default:
       assert(0);
diff --git a/mesalib/src/mesa/main/texobj.c b/mesalib/src/mesa/main/texobj.c
index 2168bffb1..334dee77b 100644
--- a/mesalib/src/mesa/main/texobj.c
+++ b/mesalib/src/mesa/main/texobj.c
@@ -83,7 +83,7 @@ _mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target )
    struct gl_texture_object *obj;
    (void) ctx;
    obj = MALLOC_STRUCT(gl_texture_object);
-   _mesa_initialize_texture_object(obj, name, target);
+   _mesa_initialize_texture_object(ctx, obj, name, target);
    return obj;
 }
 
@@ -95,7 +95,8 @@ _mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target )
  * \param target  the texture target
  */
 void
-_mesa_initialize_texture_object( struct gl_texture_object *obj,
+_mesa_initialize_texture_object( struct gl_context *ctx,
+                                 struct gl_texture_object *obj,
                                  GLuint name, GLenum target )
 {
    ASSERT(target == 0 ||
@@ -146,7 +147,7 @@ _mesa_initialize_texture_object( struct gl_texture_object *obj,
    obj->Sampler.MaxAnisotropy = 1.0;
    obj->Sampler.CompareMode = GL_NONE;         /* ARB_shadow */
    obj->Sampler.CompareFunc = GL_LEQUAL;       /* ARB_shadow */
-   obj->DepthMode = GL_LUMINANCE;
+   obj->DepthMode = ctx->API == API_OPENGL_CORE ? GL_RED : GL_LUMINANCE;
    obj->Sampler.CubeMapSeamless = GL_FALSE;
    obj->Swizzle[0] = GL_RED;
    obj->Swizzle[1] = GL_GREEN;
@@ -154,8 +155,8 @@ _mesa_initialize_texture_object( struct gl_texture_object *obj,
    obj->Swizzle[3] = GL_ALPHA;
    obj->_Swizzle = SWIZZLE_NOOP;
    obj->Sampler.sRGBDecode = GL_DECODE_EXT;
-   obj->BufferObjectFormat = GL_LUMINANCE8;
-   obj->_BufferObjectFormat = MESA_FORMAT_L8;
+   obj->BufferObjectFormat = GL_R8;
+   obj->_BufferObjectFormat = MESA_FORMAT_R8;
 }
 
 
diff --git a/mesalib/src/mesa/main/texobj.h b/mesalib/src/mesa/main/texobj.h
index a99f45bfa..0df088ce4 100644
--- a/mesalib/src/mesa/main/texobj.h
+++ b/mesalib/src/mesa/main/texobj.h
@@ -50,7 +50,8 @@ extern struct gl_texture_object *
 _mesa_new_texture_object( struct gl_context *ctx, GLuint name, GLenum target );
 
 extern void
-_mesa_initialize_texture_object( struct gl_texture_object *obj,
+_mesa_initialize_texture_object( struct gl_context *ctx,
+                                 struct gl_texture_object *obj,
                                  GLuint name, GLenum target );
 
 extern void
diff --git a/mesalib/src/mesa/main/texparam.c b/mesalib/src/mesa/main/texparam.c
index 141cbe3ab..32109951c 100644
--- a/mesalib/src/mesa/main/texparam.c
+++ b/mesalib/src/mesa/main/texparam.c
@@ -1048,6 +1048,8 @@ legal_get_tex_level_parameter_target(struct gl_context *ctx, GLenum target)
       return ctx->API == API_OPENGL_CORE && ctx->Version >= 31;
    case GL_TEXTURE_2D_MULTISAMPLE:
    case GL_TEXTURE_2D_MULTISAMPLE_ARRAY:
+   case GL_PROXY_TEXTURE_2D_MULTISAMPLE:
+   case GL_PROXY_TEXTURE_2D_MULTISAMPLE_ARRAY:
       return ctx->Extensions.ARB_texture_multisample;
    default:
       return GL_FALSE;
diff --git a/mesalib/src/mesa/main/texstate.c b/mesalib/src/mesa/main/texstate.c
index 741985c46..afff01359 100644
--- a/mesalib/src/mesa/main/texstate.c
+++ b/mesalib/src/mesa/main/texstate.c
@@ -594,8 +594,8 @@ update_texture_state( struct gl_context *ctx )
 
       /* Look for the highest priority texture target that's enabled (or used
        * by the vert/frag shaders) and "complete".  That's the one we'll use
-       * for texturing.  If we're using vert/frag program we're guaranteed
-       * that bitcount(enabledBits) <= 1.
+       * for texturing.
+       *
        * Note that the TEXTURE_x_INDEX values are in high to low priority.
        */
       for (texIndex = 0; texIndex < NUM_TEXTURE_TARGETS; texIndex++) {
@@ -624,8 +624,6 @@ update_texture_state( struct gl_context *ctx )
             struct gl_texture_object *texObj;
             gl_texture_index texTarget;
 
-            assert(_mesa_bitcount(enabledTargets) == 1);
-
             texTarget = (gl_texture_index) (ffs(enabledTargets) - 1);
             texObj = _mesa_get_fallback_texture(ctx, texTarget);
             
diff --git a/mesalib/src/mesa/main/texstorage.c b/mesalib/src/mesa/main/texstorage.c
index 0a53726fe..7bd8652b5 100644
--- a/mesalib/src/mesa/main/texstorage.c
+++ b/mesalib/src/mesa/main/texstorage.c
@@ -335,14 +335,14 @@ tex_storage_error_check(struct gl_context *ctx, GLuint dims, GLenum target,
 
    /* non-default texture object check */
    texObj = _mesa_get_current_tex_object(ctx, target);
-   if (!texObj || (texObj->Name == 0)) {
+   if (!_mesa_is_proxy_texture(target) && (!texObj || (texObj->Name == 0))) {
       _mesa_error(ctx, GL_INVALID_OPERATION,
                   "glTexStorage%uD(texture object 0)", dims);
       return GL_TRUE;
    }
 
    /* Check if texObj->Immutable is set */
-   if (texObj->Immutable) {
+   if (!_mesa_is_proxy_texture(target) && texObj->Immutable) {
       _mesa_error(ctx, GL_INVALID_OPERATION, "glTexStorage%uD(immutable)",
                   dims);
       return GL_TRUE;
diff --git a/mesalib/src/mesa/program/ir_to_mesa.cpp b/mesalib/src/mesa/program/ir_to_mesa.cpp
index 4af1c8241..f0fc1b9b1 100644
--- a/mesalib/src/mesa/program/ir_to_mesa.cpp
+++ b/mesalib/src/mesa/program/ir_to_mesa.cpp
@@ -3108,7 +3108,6 @@ _mesa_glsl_link_shader(struct gl_context *ctx, struct gl_shader_program *prog)
    for (i = 0; i < prog->NumShaders; i++) {
       if (!prog->Shaders[i]->CompileStatus) {
 	 linker_error(prog, "linking with uncompiled shader");
-	 prog->LinkStatus = GL_FALSE;
       }
    }
 
diff --git a/mesalib/src/mesa/program/program_lexer.l b/mesalib/src/mesa/program/program_lexer.l
index 0947bb046..d5dbcf347 100644
--- a/mesalib/src/mesa/program/program_lexer.l
+++ b/mesalib/src/mesa/program/program_lexer.l
@@ -165,7 +165,7 @@ szf    [HR]?
 cc     C?
 sat    (_SAT)?
 
-%option prefix="_mesa_program_"
+%option prefix="_mesa_program_lexer_"
 %option bison-bridge bison-locations reentrant noyywrap
 %%
 
diff --git a/mesalib/src/mesa/program/program_parse.y b/mesalib/src/mesa/program/program_parse.y
index e2da63347..a76db4e86 100644
--- a/mesalib/src/mesa/program/program_parse.y
+++ b/mesalib/src/mesa/program/program_parse.y
@@ -98,7 +98,7 @@ static struct asm_instruction *asm_instruction_copy_ctor(
 
 #define YYLLOC_DEFAULT(Current, Rhs, N)					\
    do {									\
-      if (YYID(N)) {							\
+      if (N) {							\
 	 (Current).first_line = YYRHSLOC(Rhs, 1).first_line;		\
 	 (Current).first_column = YYRHSLOC(Rhs, 1).first_column;	\
 	 (Current).position = YYRHSLOC(Rhs, 1).position;		\
@@ -112,16 +112,14 @@ static struct asm_instruction *asm_instruction_copy_ctor(
 	 (Current).position = YYRHSLOC(Rhs, 0).position			\
 	    + (Current).first_column;					\
       }									\
-   } while(YYID(0))
-
-#define YYLEX_PARAM state->scanner
+   } while(0)
 %}
 
 %pure-parser
 %locations
+%lex-param   { struct asm_parser_state *state }
 %parse-param { struct asm_parser_state *state }
 %error-verbose
-%lex-param { void *scanner }
 
 %union {
    struct asm_instruction *inst;
@@ -269,8 +267,16 @@ static struct asm_instruction *asm_instruction_copy_ctor(
 %type <negate> optionalSign
 
 %{
-extern int yylex(YYSTYPE *yylval_param, YYLTYPE *yylloc_param,
-    void *yyscanner);
+extern int
+_mesa_program_lexer_lex(YYSTYPE *yylval_param, YYLTYPE *yylloc_param,
+                        void *yyscanner);
+
+static int
+yylex(YYSTYPE *yylval_param, YYLTYPE *yylloc_param,
+      struct asm_parser_state *state)
+{
+   return _mesa_program_lexer_lex(yylval_param, yylloc_param, state->scanner);
+}
 %}
 
 %%
diff --git a/mesalib/src/mesa/state_tracker/st_cb_fbo.c b/mesalib/src/mesa/state_tracker/st_cb_fbo.c
index 826722be8..77aaccd04 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_fbo.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_fbo.c
@@ -37,6 +37,7 @@
 #include "main/context.h"
 #include "main/fbobject.h"
 #include "main/framebuffer.h"
+#include "main/glformats.h"
 #include "main/macros.h"
 #include "main/renderbuffer.h"
 
@@ -132,6 +133,13 @@ st_renderbuffer_alloc_storage(struct gl_context * ctx,
    pipe_surface_reference( &strb->surface, NULL );
    pipe_resource_reference( &strb->texture, NULL );
 
+   /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear
+    * formats.
+    */
+   if (!ctx->Extensions.EXT_framebuffer_sRGB) {
+      internalFormat = _mesa_get_linear_internalformat(internalFormat);
+   }
+
    /* Handle multisample renderbuffers first.
     *
     * From ARB_framebuffer_object:
diff --git a/mesalib/src/mesa/state_tracker/st_cb_texture.c b/mesalib/src/mesa/state_tracker/st_cb_texture.c
index c167744f4..faa9ee3f6 100644
--- a/mesalib/src/mesa/state_tracker/st_cb_texture.c
+++ b/mesalib/src/mesa/state_tracker/st_cb_texture.c
@@ -141,7 +141,7 @@ st_NewTextureObject(struct gl_context * ctx, GLuint name, GLenum target)
    struct st_texture_object *obj = ST_CALLOC_STRUCT(st_texture_object);
 
    DBG("%s\n", __FUNCTION__);
-   _mesa_initialize_texture_object(&obj->base, name, target);
+   _mesa_initialize_texture_object(ctx, &obj->base, name, target);
 
    return &obj->base;
 }
diff --git a/mesalib/src/mesa/state_tracker/st_extensions.c b/mesalib/src/mesa/state_tracker/st_extensions.c
index d01942967..0b7001bae 100644
--- a/mesalib/src/mesa/state_tracker/st_extensions.c
+++ b/mesalib/src/mesa/state_tracker/st_extensions.c
@@ -289,14 +289,6 @@ void st_init_limits(struct st_context *st)
 }
 
 
-static GLboolean st_get_s3tc_override(void)
-{
-   const char *override = _mesa_getenv("force_s3tc_enable");
-   if (override && !strcmp(override, "true"))
-      return GL_TRUE;
-   return GL_FALSE;
-}
-
 /**
  * Given a member \c x of struct gl_extensions, return offset of
  * \c x in bytes.
@@ -606,16 +598,24 @@ void st_init_extensions(struct st_context *st)
 
    _mesa_override_glsl_version(st->ctx);
 
+   if (st->options.force_glsl_version > 0 &&
+       st->options.force_glsl_version <= ctx->Const.GLSLVersion) {
+      ctx->Const.ForceGLSLVersion = st->options.force_glsl_version;
+   }
+
    if (ctx->Const.GLSLVersion >= 130) {
       ctx->Const.NativeIntegers = GL_TRUE;
       ctx->Const.MaxClipPlanes = 8;
 
       /* Extensions that either depend on GLSL 1.30 or are a subset thereof. */
       ctx->Extensions.ARB_conservative_depth = GL_TRUE;
-      ctx->Extensions.ARB_shader_bit_encoding = GL_TRUE;
       ctx->Extensions.ARB_shading_language_packing = GL_TRUE;
       ctx->Extensions.OES_depth_texture_cube_map = GL_TRUE;
       ctx->Extensions.ARB_shading_language_420pack = GL_TRUE;
+
+      if (!st->options.disable_shader_bit_encoding) {
+         ctx->Extensions.ARB_shader_bit_encoding = GL_TRUE;
+      }
    } else {
       /* Optional integer support for GLSL 1.2. */
       if (screen->get_shader_param(screen, PIPE_SHADER_VERTEX,
@@ -628,7 +628,7 @@ void st_init_extensions(struct st_context *st)
 
    /* Below are the cases which cannot be moved into tables easily. */
 
-   if (!ctx->Mesa_DXTn && !st_get_s3tc_override()) {
+   if (!ctx->Mesa_DXTn && !st->options.force_s3tc_enable) {
       ctx->Extensions.EXT_texture_compression_s3tc = GL_FALSE;
       ctx->Extensions.ANGLE_texture_compression_dxt = GL_FALSE;
    }
@@ -710,9 +710,11 @@ void st_init_extensions(struct st_context *st)
    }
    else if (ctx->Const.MaxSamples >= 2) {
       ctx->Extensions.EXT_framebuffer_multisample = GL_TRUE;
+      ctx->Extensions.EXT_framebuffer_multisample_blit_scaled = GL_TRUE;
    }
 
-   if (ctx->Const.MaxDualSourceDrawBuffers > 0)
+   if (ctx->Const.MaxDualSourceDrawBuffers > 0 &&
+       !st->options.disable_blend_func_extended)
       ctx->Extensions.ARB_blend_func_extended = GL_TRUE;
 
    st->has_time_elapsed =
diff --git a/mesalib/src/mesa/state_tracker/st_format.c b/mesalib/src/mesa/state_tracker/st_format.c
index 16d977fc9..64bfd1faa 100644
--- a/mesalib/src/mesa/state_tracker/st_format.c
+++ b/mesalib/src/mesa/state_tracker/st_format.c
@@ -1782,6 +1782,13 @@ st_QuerySamplesForFormat(struct gl_context *ctx, GLenum target,
    else
       bind = PIPE_BIND_RENDER_TARGET;
 
+   /* If an sRGB framebuffer is unsupported, sRGB formats behave like linear
+    * formats.
+    */
+   if (!ctx->Extensions.EXT_framebuffer_sRGB) {
+      internalFormat = _mesa_get_linear_internalformat(internalFormat);
+   }
+
    /* Set sample counts in descending order. */
    for (i = 16; i > 1; i--) {
       format = st_choose_format(st, internalFormat, GL_NONE, GL_NONE,
diff --git a/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 69c1b412b..3dfd5e5b3 100644
--- a/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/mesalib/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -1832,10 +1832,17 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
          emit(ir, TGSI_OPCODE_TRUNC, result_dst, op[0]);
       break;
    case ir_unop_bitcast_f2i:
+      result_src = op[0];
+      result_src.type = GLSL_TYPE_INT;
+      break;
    case ir_unop_bitcast_f2u:
+      result_src = op[0];
+      result_src.type = GLSL_TYPE_UINT;
+      break;
    case ir_unop_bitcast_i2f:
    case ir_unop_bitcast_u2f:
       result_src = op[0];
+      result_src.type = GLSL_TYPE_FLOAT;
       break;
    case ir_unop_f2b:
       emit(ir, TGSI_OPCODE_SNE, result_dst, op[0], st_src_reg_for_float(0.0));