| // 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/macros.h" |
| #include "base/memory/ref_counted.h" |
| #include "gpu/command_buffer/service/shader_translator.h" |
| #include "gpu/config/gpu_preferences.h" |
| #include "third_party/angle/include/GLSLANG/ShaderLang.h" |
| |
| namespace gpu { |
| |
| struct GpuPreferences; |
| |
| namespace gles2 { |
| |
| // This class is not thread safe and can only be created and destroyed |
| // on a single thread. But it is safe to use two independent instances on two |
| // threads without synchronization. |
| // |
| // TODO(backer): Investigate using glReleaseShaderCompiler as an alternative to |
| // to this cache. |
| class GPU_GLES2_EXPORT ShaderTranslatorCache |
| : public ShaderTranslator::DestructionObserver { |
| public: |
| explicit ShaderTranslatorCache(const GpuPreferences& gpu_preferences); |
| ~ShaderTranslatorCache() override; |
| |
| // ShaderTranslator::DestructionObserver implementation |
| void OnDestruct(ShaderTranslator* translator) override; |
| |
| scoped_refptr<ShaderTranslator> GetTranslator( |
| sh::GLenum shader_type, |
| ShShaderSpec shader_spec, |
| const ShBuiltInResources* resources, |
| ShShaderOutput shader_output_language, |
| ShCompileOptions driver_bug_workarounds); |
| |
| private: |
| friend class ShaderTranslatorCacheTest_InitParamComparable_Test; |
| |
| // Parameters passed into ShaderTranslator::Init |
| struct ShaderTranslatorInitParams { |
| sh::GLenum shader_type; |
| ShShaderSpec shader_spec; |
| ShBuiltInResources resources; |
| ShShaderOutput shader_output_language; |
| ShCompileOptions driver_bug_workarounds; |
| |
| ShaderTranslatorInitParams(sh::GLenum shader_type, |
| ShShaderSpec shader_spec, |
| const ShBuiltInResources& resources, |
| ShShaderOutput shader_output_language, |
| ShCompileOptions driver_bug_workarounds) { |
| memset(this, 0, sizeof(*this)); |
| this->shader_type = shader_type; |
| this->shader_spec = shader_spec; |
| this->resources = resources; |
| this->shader_output_language = shader_output_language; |
| this->driver_bug_workarounds = driver_bug_workarounds; |
| } |
| |
| 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; |
| } |
| |
| private: |
| ShaderTranslatorInitParams() = delete; |
| ShaderTranslatorInitParams& operator=(const ShaderTranslatorInitParams&) = |
| delete; |
| }; |
| |
| const GpuPreferences gpu_preferences_; |
| |
| 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_ |