xwininfo fontconfig libX11 libXau libXdmcp libXext mesa libXinerama libxcb libxcb/xcb-proto libfontenc pixman xkbcomp mkfontscale xkeyboard-config git update 4 Jun 2013

xserver          commit c21344add2fc589df83b29be5831c36a372201bd
libxcb           commit 9ae84ad187e2ba440c40f44b8eb21c82c2fdbf12
libxcb/xcb-proto commit bdfedfa57a13ff805580cfacafc70f9cc55df363
xkeyboard-config commit dad9ade4e83d1ef5a517fcc4cc9ad3a79b47acce
libX11           commit 8496122eb00ce6cd5d2308ee54f64b68c378e455
libXdmcp         commit 0b443c1b769b9c9a3b45b4252afe07e18b709ff4
libXext          commit d8366afbb0d2e4fbb1e419b1187f490522270bea
libfontenc       commit 3acba630d8b57084f7e92c15732408711ed5137a
libXinerama      commit 6e1d1dc328ba8162bba2f4694e7f3c706a1491ff
libXau           commit 899790011304c4029e15abf410e49ce7cec17e0a
xkbcomp          commit ed582f4fccd4e23abcfba8b3b03649fea6414f44
pixman           commit 2acfac5f8e097ee2ae225d986f981b55d65dd152
mkfontscale      commit 19e2cb7c6a3ec2c5b1bc0d24866fa685eef0ee13
xwininfo         commit ba0d1b0da21d2dbdd81098ed5778f3792b472e13
fontconfig       commit cd9b1033a68816a7acfbba1718ba0aa5888f6ec7
mesa             commit 7bafd88c153e395274b632e7eae4bc9fc3aec1d2

1 files changed, 238 insertions, 0 deletions

diff --git a/mesalib/src/glsl/lower_named_interface_blocks.cpp b/mesalib/src/glsl/lower_named_interface_blocks.cpp
new file mode 100644
index 000000000..eba667a8b
--- /dev/null
+++ b/mesalib/src/glsl/lower_named_interface_blocks.cpp
@@ -0,0 +1,238 @@
+/*
+ * Copyright (c) 2013 Intel Corporation
+ *
+ * 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 (including the next
+ * paragraph) 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
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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 lower_named_interface_blocks.cpp
+ *
+ * This lowering pass converts all interface blocks with instance names
+ * into interface blocks without an instance name.
+ *
+ * For example, the following shader:
+ *
+ *   out block {
+ *     float block_var;
+ *   } inst_name;
+ *
+ *   main()
+ *   {
+ *     inst_name.block_var = 0.0;
+ *   }
+ *
+ * Is rewritten to:
+ *
+ *   out block {
+ *     float block_var;
+ *   };
+ *
+ *   main()
+ *   {
+ *     block_var = 0.0;
+ *   }
+ *
+ * This takes place after the shader code has already been verified with
+ * the interface name in place.
+ *
+ * The linking phase will use the interface block name rather than the
+ * interface's instance name when linking interfaces.
+ *
+ * This modification to the ir allows our currently existing dead code
+ * elimination to work with interface blocks without changes.
+ */
+
+#include "glsl_symbol_table.h"
+#include "ir.h"
+#include "ir_optimization.h"
+#include "ir_rvalue_visitor.h"
+#include "program/hash_table.h"
+
+class flatten_named_interface_blocks_declarations : public ir_rvalue_visitor
+{
+public:
+   void * const mem_ctx;
+   hash_table *interface_namespace;
+
+   flatten_named_interface_blocks_declarations(void *mem_ctx)
+      : mem_ctx(mem_ctx)
+   {
+   }
+
+   void run(exec_list *instructions);
+
+   virtual ir_visitor_status visit_leave(ir_assignment *);
+   virtual void handle_rvalue(ir_rvalue **rvalue);
+};
+
+void
+flatten_named_interface_blocks_declarations::run(exec_list *instructions)
+{
+   interface_namespace = hash_table_ctor(0, hash_table_string_hash,
+                                         hash_table_string_compare);
+
+   /* First pass: adjust instance block variables with an instance name
+    * to not have an instance name.
+    *
+    * The interface block variables are stored in the interface_namespace
+    * hash table so they can be used in the second pass.
+    */
+   foreach_list_safe(node, instructions) {
+      ir_variable *var = ((ir_instruction *) node)->as_variable();
+      if (!var || !var->is_interface_instance())
+         continue;
+
+      /* It should be possible to handle uniforms during this pass,
+       * but, this will require changes to the other uniform block
+       * support code.
+       */
+      if (var->mode == ir_var_uniform)
+         continue;
+
+      const glsl_type * iface_t = var->type;
+      const glsl_type * array_t = NULL;
+      exec_node *insert_pos = var;
+
+      if (iface_t->is_array()) {
+         array_t = iface_t;
+         iface_t = array_t->fields.array;
+      }
+
+      assert (iface_t->is_interface());
+
+      for (unsigned i = 0; i < iface_t->length; i++) {
+         const char * field_name = iface_t->fields.structure[i].name;
+         char *iface_field_name =
+            ralloc_asprintf(mem_ctx, "%s.%s",
+                            iface_t->name, field_name);
+
+         ir_variable *found_var =
+            (ir_variable *) hash_table_find(interface_namespace,
+                                            iface_field_name);
+         if (!found_var) {
+            ir_variable *new_var;
+            if (array_t == NULL) {
+               char *var_name =
+                  ralloc_strdup(mem_ctx, iface_t->fields.structure[i].name);
+               new_var =
+                  new(mem_ctx) ir_variable(iface_t->fields.structure[i].type,
+                                           var_name,
+                                           (ir_variable_mode) var->mode);
+            } else {
+               const glsl_type *new_array_type =
+                  glsl_type::get_array_instance(
+                     iface_t->fields.structure[i].type,
+                     array_t->length);
+               char *var_name =
+                  ralloc_asprintf(mem_ctx, "%s[%d]",
+                                  iface_t->fields.structure[i].name,
+                                  array_t->length);
+               new_var =
+                  new(mem_ctx) ir_variable(new_array_type,
+                                           var_name,
+                                           (ir_variable_mode) var->mode);
+            }
+
+            new_var->interface_type = iface_t;
+            hash_table_insert(interface_namespace, new_var,
+                              iface_field_name);
+            insert_pos->insert_after(new_var);
+            insert_pos = new_var;
+         }
+      }
+      var->remove();
+   }
+
+   /* Second pass: visit all ir_dereference_record instances, and if they
+    * reference an interface block, then flatten the refererence out.
+    */
+   visit_list_elements(this, instructions);
+   hash_table_dtor(interface_namespace);
+   interface_namespace = NULL;
+}
+
+ir_visitor_status
+flatten_named_interface_blocks_declarations::visit_leave(ir_assignment *ir)
+{
+   ir_dereference_record *lhs_rec = ir->lhs->as_dereference_record();
+   if (lhs_rec) {
+      ir_rvalue *lhs_rec_tmp = lhs_rec;
+      handle_rvalue(&lhs_rec_tmp);
+      if (lhs_rec_tmp != lhs_rec) {
+         ir->set_lhs(lhs_rec_tmp);
+      }
+   }
+   return rvalue_visit(ir);
+}
+
+void
+flatten_named_interface_blocks_declarations::handle_rvalue(ir_rvalue **rvalue)
+{
+   if (*rvalue == NULL)
+      return;
+
+   ir_dereference_record *ir = (*rvalue)->as_dereference_record();
+   if (ir == NULL)
+      return;
+
+   ir_variable *var = ir->variable_referenced();
+
+   if (!var->is_interface_instance())
+      return;
+
+   /* It should be possible to handle uniforms during this pass,
+    * but, this will require changes to the other uniform block
+    * support code.
+    */
+   if (var->mode == ir_var_uniform)
+      return;
+
+   if (var->interface_type != NULL) {
+      char *iface_field_name =
+         ralloc_asprintf(mem_ctx, "%s.%s", var->interface_type->name,
+                         ir->field);
+      /* Find the variable in the set of flattened interface blocks */
+      ir_variable *found_var =
+         (ir_variable *) hash_table_find(interface_namespace,
+                                         iface_field_name);
+      assert(found_var);
+
+      ir_dereference_variable *deref_var =
+         new(mem_ctx) ir_dereference_variable(found_var);
+
+      ir_dereference_array *deref_array =
+         ir->record->as_dereference_array();
+      if (deref_array != NULL) {
+         *rvalue =
+            new(mem_ctx) ir_dereference_array(deref_var,
+                                              deref_array->array_index);
+      } else {
+         *rvalue = deref_var;
+      }
+   }
+}
+
+void
+lower_named_interface_blocks(void *mem_ctx, gl_shader *shader)
+{
+   flatten_named_interface_blocks_declarations v_decl(mem_ctx);
+   v_decl.run(shader->ir);
+}
+