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| 1 // Copyright 2011 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #ifndef CC_OUTPUT_PROGRAM_BINDING_H_ | |
| 6 #define CC_OUTPUT_PROGRAM_BINDING_H_ | |
| 7 | |
| 8 #include <string> | |
| 9 | |
| 10 #include "base/logging.h" | |
| 11 #include "cc/output/context_provider.h" | |
| 12 #include "cc/output/shader.h" | |
| 13 | |
| 14 namespace gpu { | |
| 15 namespace gles2 { | |
| 16 class GLES2Interface; | |
| 17 } | |
| 18 } | |
| 19 | |
| 20 namespace cc { | |
| 21 | |
| 22 class ProgramBindingBase { | |
| 23 public: | |
| 24 ProgramBindingBase(); | |
| 25 ~ProgramBindingBase(); | |
| 26 | |
| 27 bool Init(gpu::gles2::GLES2Interface* context, | |
| 28 const std::string& vertex_shader, | |
| 29 const std::string& fragment_shader); | |
| 30 bool Link(gpu::gles2::GLES2Interface* context); | |
| 31 void Cleanup(gpu::gles2::GLES2Interface* context); | |
| 32 | |
| 33 unsigned program() const { return program_; } | |
| 34 bool initialized() const { return initialized_; } | |
| 35 | |
| 36 protected: | |
| 37 unsigned LoadShader(gpu::gles2::GLES2Interface* context, | |
| 38 unsigned type, | |
| 39 const std::string& shader_source); | |
| 40 unsigned CreateShaderProgram(gpu::gles2::GLES2Interface* context, | |
| 41 unsigned vertex_shader, | |
| 42 unsigned fragment_shader); | |
| 43 void CleanupShaders(gpu::gles2::GLES2Interface* context); | |
| 44 | |
| 45 unsigned program_; | |
| 46 unsigned vertex_shader_id_; | |
| 47 unsigned fragment_shader_id_; | |
| 48 bool initialized_; | |
| 49 | |
| 50 private: | |
| 51 DISALLOW_COPY_AND_ASSIGN(ProgramBindingBase); | |
| 52 }; | |
| 53 | |
| 54 template <class VertexShader, class FragmentShader> | |
| 55 class ProgramBinding : public ProgramBindingBase { | |
| 56 public: | |
| 57 ProgramBinding() {} | |
| 58 | |
| 59 void Initialize(ContextProvider* context_provider, | |
| 60 TexCoordPrecision precision, | |
| 61 SamplerType sampler) { | |
| 62 return Initialize( | |
| 63 context_provider, precision, sampler, BLEND_MODE_NONE, false); | |
| 64 } | |
| 65 | |
| 66 void Initialize(ContextProvider* context_provider, | |
| 67 TexCoordPrecision precision, | |
| 68 SamplerType sampler, | |
| 69 BlendMode blend_mode) { | |
| 70 return Initialize( | |
| 71 context_provider, precision, sampler, blend_mode, false); | |
| 72 } | |
| 73 | |
| 74 void Initialize(ContextProvider* context_provider, | |
| 75 TexCoordPrecision precision, | |
| 76 SamplerType sampler, | |
| 77 BlendMode blend_mode, | |
| 78 bool mask_for_background) { | |
| 79 DCHECK(context_provider); | |
| 80 DCHECK(!initialized_); | |
| 81 | |
| 82 if (context_provider->IsContextLost()) | |
| 83 return; | |
| 84 | |
| 85 fragment_shader_.set_blend_mode(blend_mode); | |
| 86 fragment_shader_.set_mask_for_background(mask_for_background); | |
| 87 | |
| 88 if (!ProgramBindingBase::Init( | |
| 89 context_provider->ContextGL(), | |
| 90 vertex_shader_.GetShaderString(), | |
| 91 fragment_shader_.GetShaderString(precision, sampler))) { | |
| 92 DCHECK(context_provider->IsContextLost()); | |
| 93 return; | |
| 94 } | |
| 95 | |
| 96 int base_uniform_index = 0; | |
| 97 vertex_shader_.Init(context_provider->ContextGL(), | |
| 98 program_, &base_uniform_index); | |
| 99 fragment_shader_.Init(context_provider->ContextGL(), | |
| 100 program_, &base_uniform_index); | |
| 101 | |
| 102 // Link after binding uniforms | |
| 103 if (!Link(context_provider->ContextGL())) { | |
| 104 DCHECK(context_provider->IsContextLost()); | |
| 105 return; | |
| 106 } | |
| 107 | |
| 108 initialized_ = true; | |
| 109 } | |
| 110 | |
| 111 const VertexShader& vertex_shader() const { return vertex_shader_; } | |
| 112 const FragmentShader& fragment_shader() const { return fragment_shader_; } | |
| 113 | |
| 114 private: | |
| 115 VertexShader vertex_shader_; | |
| 116 FragmentShader fragment_shader_; | |
| 117 | |
| 118 DISALLOW_COPY_AND_ASSIGN(ProgramBinding); | |
| 119 }; | |
| 120 | |
| 121 } // namespace cc | |
| 122 | |
| 123 #endif // CC_OUTPUT_PROGRAM_BINDING_H_ | |
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