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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #ifndef GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_CACHE_H_ | 5 #ifndef GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_CACHE_H_ |
6 #define GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_CACHE_H_ | 6 #define GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_CACHE_H_ |
7 | 7 |
8 #include <string.h> | 8 #include <string.h> |
9 | 9 |
10 #include <map> | 10 #include <map> |
11 | 11 |
12 #include "base/memory/ref_counted.h" | 12 #include "base/memory/ref_counted.h" |
13 #include "base/memory/singleton.h" | |
14 #include "gpu/command_buffer/service/shader_translator.h" | 13 #include "gpu/command_buffer/service/shader_translator.h" |
15 #include "third_party/angle/include/GLSLANG/ShaderLang.h" | 14 #include "third_party/angle/include/GLSLANG/ShaderLang.h" |
16 | 15 |
17 namespace gpu { | 16 namespace gpu { |
18 namespace gles2 { | 17 namespace gles2 { |
19 | 18 |
20 // This singleton and the cache that it implements is NOT thread safe. | 19 // This class is not thread safe and can only be created and destroyed |
21 // We're relying on the fact that the all GLES2DecoderImpl's are used | 20 // on a single thread. But it is safe to use two independent instances on two |
22 // on one thread. | 21 // threads without synchronization. |
23 // | 22 // |
24 // TODO(backer): Investigate using glReleaseShaderCompiler as an alternative to | 23 // TODO(backer): Investigate using glReleaseShaderCompiler as an alternative to |
25 // to this cache. | 24 // to this cache. |
26 class ShaderTranslatorCache : public ShaderTranslator::DestructionObserver { | 25 class GPU_EXPORT ShaderTranslatorCache |
| 26 : public base::RefCounted<ShaderTranslatorCache>, |
| 27 public NON_EXPORTED_BASE(ShaderTranslator::DestructionObserver) { |
27 public: | 28 public: |
28 static ShaderTranslatorCache* GetInstance(); | 29 ShaderTranslatorCache(); |
29 | 30 |
30 // ShaderTranslator::DestructionObserver implementation | 31 // ShaderTranslator::DestructionObserver implementation |
31 virtual void OnDestruct(ShaderTranslator* translator) OVERRIDE; | 32 virtual void OnDestruct(ShaderTranslator* translator) OVERRIDE; |
32 | 33 |
33 scoped_refptr<ShaderTranslator> GetTranslator( | 34 scoped_refptr<ShaderTranslator> GetTranslator( |
34 ShShaderType shader_type, | 35 ShShaderType shader_type, |
35 ShShaderSpec shader_spec, | 36 ShShaderSpec shader_spec, |
36 const ShBuiltInResources* resources, | 37 const ShBuiltInResources* resources, |
37 ShaderTranslatorInterface::GlslImplementationType | 38 ShaderTranslatorInterface::GlslImplementationType |
38 glsl_implementation_type, | 39 glsl_implementation_type, |
39 ShCompileOptions driver_bug_workarounds); | 40 ShCompileOptions driver_bug_workarounds); |
40 | 41 |
41 private: | 42 private: |
42 ShaderTranslatorCache(); | 43 friend class base::RefCounted<ShaderTranslatorCache>; |
43 virtual ~ShaderTranslatorCache(); | 44 virtual ~ShaderTranslatorCache(); |
44 | 45 |
45 friend struct DefaultSingletonTraits<ShaderTranslatorCache>; | |
46 | |
47 // Parameters passed into ShaderTranslator::Init | 46 // Parameters passed into ShaderTranslator::Init |
48 struct ShaderTranslatorInitParams { | 47 struct ShaderTranslatorInitParams { |
49 ShShaderType shader_type; | 48 ShShaderType shader_type; |
50 ShShaderSpec shader_spec; | 49 ShShaderSpec shader_spec; |
51 ShBuiltInResources resources; | 50 ShBuiltInResources resources; |
52 ShaderTranslatorInterface::GlslImplementationType | 51 ShaderTranslatorInterface::GlslImplementationType |
53 glsl_implementation_type; | 52 glsl_implementation_type; |
54 ShCompileOptions driver_bug_workarounds; | 53 ShCompileOptions driver_bug_workarounds; |
55 | 54 |
56 ShaderTranslatorInitParams( | 55 ShaderTranslatorInitParams( |
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83 typedef std::map<ShaderTranslatorInitParams, ShaderTranslator* > Cache; | 82 typedef std::map<ShaderTranslatorInitParams, ShaderTranslator* > Cache; |
84 Cache cache_; | 83 Cache cache_; |
85 | 84 |
86 DISALLOW_COPY_AND_ASSIGN(ShaderTranslatorCache); | 85 DISALLOW_COPY_AND_ASSIGN(ShaderTranslatorCache); |
87 }; | 86 }; |
88 | 87 |
89 } // namespace gles2 | 88 } // namespace gles2 |
90 } // namespace gpu | 89 } // namespace gpu |
91 | 90 |
92 #endif // GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_CACHE_H_ | 91 #endif // GPU_COMMAND_BUFFER_SERVICE_SHADER_TRANSLATOR_CACHE_H_ |
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