Check for shader version mismatch

gpu/command_buffer/service/shader_manager.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef GPU_COMMAND_BUFFER_SERVICE_SHADER_MANAGER_H_
 #define GPU_COMMAND_BUFFER_SERVICE_SHADER_MANAGER_H_
 
 #include <string>
 #include "base/basictypes.h"
 #include "base/containers/hash_tables.h"
@@ skipping 17 matching lines @@
     kANGLE,
     kGL,  // GL or GLES
   };
 
   enum ShaderState {
     kShaderStateWaiting,
     kShaderStateCompileRequested,
     kShaderStateCompiled, // Signifies compile happened, not valid compile.
   };
 
+  static const int kUndefinedShaderVersion = -1;
+
   void RequestCompile(scoped_refptr<ShaderTranslatorInterface> translator,
                       TranslatedShaderSourceType type);
 
   void DoCompile();
 
   ShaderState shader_state() const {
     return shader_state_;
   }
 
   GLuint service_id() const {
     return marked_for_deletion_ ? 0 : service_id_;
   }
 
   GLenum shader_type() const {
     return shader_type_;
   }
 
+  int shader_version() const {
+    return shader_version_;
+  }
+
   const std::string& source() const {
     return source_;
   }
 
   void set_source(const std::string& source) {
     source_ = source;
   }
 
   const std::string& translated_source() const {
     return translated_source_;
@@ skipping 96 matching lines @@
 
   // The shader has been marked for deletion.
   bool marked_for_deletion_;
 
   // The shader this Shader is tracking.
   GLuint service_id_;
 
   // Type of shader - GL_VERTEX_SHADER or GL_FRAGMENT_SHADER.
   GLenum shader_type_;
 
+  // Version of the shader. Can be kUndefinedShaderVersion or version returned
+  // by ANGLE.
+  int shader_version_;
+
   // Translated source type when shader was last requested to be compiled.
   TranslatedShaderSourceType source_type_;
 
   // Translator to use, set when shader was last requested to be compiled.
   scoped_refptr<ShaderTranslatorInterface> translator_;
 
   // True if compilation succeeded.
   bool valid_;
 
   // The shader source as passed to glShaderSource.
@@ skipping 64 matching lines @@
   void RemoveShader(Shader* shader);
 
   DISALLOW_COPY_AND_ASSIGN(ShaderManager);
 };
 
 }  // namespace gles2
 }  // namespace gpu
 
 #endif  // GPU_COMMAND_BUFFER_SERVICE_SHADER_MANAGER_H_