| // 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_TRANSLATOR_CACHE_H_ |
| #define GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_CACHE_H_ |
| |
| #include <string.h> |
| |
| #include <map> |
| |
| #include "base/memory/ref_counted.h" |
| #include "base/memory/singleton.h" |
| #include "gpu/command_buffer/service/shader_translator.h" |
| |
| #if defined(ANGLE_DX11) |
| #include "third_party/angle_dx11/include/GLSLANG/ShaderLang.h" |
| #else |
| #include "third_party/angle/include/GLSLANG/ShaderLang.h" |
| #endif |
| |
| namespace gpu { |
| namespace gles2 { |
| |
| // This singleton and the cache that it implements is NOT thread safe. |
| // We're relying on the fact that the all GLES2DecoderImpl's are used |
| // on one thread. |
| // |
| // TODO(backer): Investigate using glReleaseShaderCompiler as an alternative to |
| // to this cache. |
| class ShaderTranslatorCache : public ShaderTranslator::DestructionObserver { |
| public: |
| static ShaderTranslatorCache* GetInstance(); |
| |
| // ShaderTranslator::DestructionObserver implementation |
| virtual void OnDestruct(ShaderTranslator* translator) OVERRIDE; |
| |
| scoped_refptr<ShaderTranslator> GetTranslator( |
| ShShaderType shader_type, |
| ShShaderSpec shader_spec, |
| const ShBuiltInResources* resources, |
| ShaderTranslatorInterface::GlslImplementationType |
| glsl_implementation_type, |
| ShaderTranslatorInterface::GlslBuiltInFunctionBehavior |
| glsl_built_in_function_behavior); |
| |
| private: |
| ShaderTranslatorCache(); |
| virtual ~ShaderTranslatorCache(); |
| |
| friend struct DefaultSingletonTraits<ShaderTranslatorCache>; |
| |
| // Parameters passed into ShaderTranslator::Init |
| struct ShaderTranslatorInitParams { |
| ShShaderType shader_type; |
| ShShaderSpec shader_spec; |
| ShBuiltInResources resources; |
| ShaderTranslatorInterface::GlslImplementationType |
| glsl_implementation_type; |
| ShaderTranslatorInterface::GlslBuiltInFunctionBehavior |
| glsl_built_in_function_behavior; |
| |
| ShaderTranslatorInitParams( |
| ShShaderType shader_type, |
| ShShaderSpec shader_spec, |
| const ShBuiltInResources& resources, |
| ShaderTranslatorInterface::GlslImplementationType |
| glsl_implementation_type, |
| ShaderTranslatorInterface::GlslBuiltInFunctionBehavior |
| glsl_built_in_function_behavior) |
| : shader_type(shader_type), |
| shader_spec(shader_spec), |
| resources(resources), |
| glsl_implementation_type(glsl_implementation_type), |
| glsl_built_in_function_behavior(glsl_built_in_function_behavior) { |
| } |
| |
| ShaderTranslatorInitParams(const ShaderTranslatorInitParams& params) { |
| memcpy(this, ¶ms, sizeof(*this)); |
| } |
| |
| bool operator== (const ShaderTranslatorInitParams& params) const { |
| return memcmp(¶ms, this, sizeof(*this)) == 0; |
| } |
| |
| bool operator< (const ShaderTranslatorInitParams& params) const { |
| return memcmp(¶ms, this, sizeof(*this)) < 0; |
| } |
| }; |
| |
| typedef std::map<ShaderTranslatorInitParams, ShaderTranslator* > Cache; |
| Cache cache_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ShaderTranslatorCache); |
| }; |
| |
| } // namespace gles2 |
| } // namespace gpu |
| |
| #endif // GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_CACHE_H_ |