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| 1 /* | 1 /* |
| 2 * Copyright 2011 Google Inc. | 2 * Copyright 2011 Google Inc. |
| 3 * | 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
| 6 */ | 6 */ |
| 7 | 7 |
| 8 | 8 |
| 9 #ifndef GrGLProgram_DEFINED | 9 #ifndef GrGLProgram_DEFINED |
| 10 #define GrGLProgram_DEFINED | 10 #define GrGLProgram_DEFINED |
| 11 | 11 |
| 12 #include "builders/GrGLProgramBuilder.h" | 12 #include "builders/GrGLProgramBuilder.h" |
| 13 #include "GrDrawState.h" | 13 #include "GrDrawState.h" |
| 14 #include "GrGLContext.h" | 14 #include "GrGLContext.h" |
| 15 #include "GrGLProgramDesc.h" | 15 #include "GrGLProgramDesc.h" |
| 16 #include "GrGLSL.h" | 16 #include "GrGLSL.h" |
| 17 #include "GrGLTexture.h" | 17 #include "GrGLTexture.h" |
| 18 #include "GrGLProgramDataManager.h" | 18 #include "GrGLProgramDataManager.h" |
| 19 | 19 |
| 20 #include "SkString.h" | 20 #include "SkString.h" |
| 21 #include "SkXfermode.h" | 21 #include "SkXfermode.h" |
| 22 | 22 |
| 23 class GrGLEffect; | 23 class GrGLProcessor; |
| 24 class GrGLProgramEffects; | 24 class GrGLProgramEffects; |
| 25 class GrGLProgramBuilder; | 25 class GrGLProgramBuilder; |
| 26 | 26 |
| 27 /** | 27 /** |
| 28 * This class manages a GPU program and records per-program information. | 28 * This class manages a GPU program and records per-program information. |
| 29 * We can specify the attribute locations so that they are constant | 29 * We can specify the attribute locations so that they are constant |
| 30 * across our shaders. But the driver determines the uniform locations | 30 * across our shaders. But the driver determines the uniform locations |
| 31 * at link time. We don't need to remember the sampler uniform location | 31 * at link time. We don't need to remember the sampler uniform location |
| 32 * because we will bind a texture slot to it and never change it | 32 * because we will bind a texture slot to it and never change it |
| 33 * Uniforms are program-local so we can't rely on fHWState to hold the | 33 * Uniforms are program-local so we can't rely on fHWState to hold the |
| 34 * previous uniform state after a program change. | 34 * previous uniform state after a program change. |
| 35 */ | 35 */ |
| 36 class GrGLProgram : public SkRefCnt { | 36 class GrGLProgram : public SkRefCnt { |
| 37 public: | 37 public: |
| 38 SK_DECLARE_INST_COUNT(GrGLProgram) | 38 SK_DECLARE_INST_COUNT(GrGLProgram) |
| 39 | 39 |
| 40 typedef GrGLProgramBuilder::BuiltinUniformHandles BuiltinUniformHandles; | 40 typedef GrGLProgramBuilder::BuiltinUniformHandles BuiltinUniformHandles; |
| 41 | 41 |
| 42 static GrGLProgram* Create(GrGpuGL* gpu, | 42 static GrGLProgram* Create(GrGpuGL* gpu, |
| 43 const GrGLProgramDesc& desc, | 43 const GrGLProgramDesc& desc, |
| 44 const GrEffectStage* geometryProcessor, | 44 const GrGeometryStage* geometryProcessor, |
| 45 const GrEffectStage* colorStages[], | 45 const GrFragmentStage* colorStages[], |
| 46 const GrEffectStage* coverageStages[]); | 46 const GrFragmentStage* coverageStages[]); |
| 47 | 47 |
| 48 virtual ~GrGLProgram(); | 48 virtual ~GrGLProgram(); |
| 49 | 49 |
| 50 /** | 50 /** |
| 51 * Call to abandon GL objects owned by this program. | 51 * Call to abandon GL objects owned by this program. |
| 52 */ | 52 */ |
| 53 void abandon(); | 53 void abandon(); |
| 54 | 54 |
| 55 /** | 55 /** |
| 56 * The shader may modify the blend coefficients. Params are in/out. | 56 * The shader may modify the blend coefficients. Params are in/out. |
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| 145 destVec[2] = -2.f / fRenderTargetSize.fHeight; | 145 destVec[2] = -2.f / fRenderTargetSize.fHeight; |
| 146 destVec[3] = 1.f; | 146 destVec[3] = 1.f; |
| 147 } else { | 147 } else { |
| 148 destVec[2] = 2.f / fRenderTargetSize.fHeight; | 148 destVec[2] = 2.f / fRenderTargetSize.fHeight; |
| 149 destVec[3] = -1.f; | 149 destVec[3] = -1.f; |
| 150 } | 150 } |
| 151 } | 151 } |
| 152 }; | 152 }; |
| 153 | 153 |
| 154 /** | 154 /** |
| 155 * This function uploads uniforms and calls each GrGLEffect's setData. It is
called before a | 155 * This function uploads uniforms and calls each GrGLProcessor's setData. It
is called before a |
| 156 * draw occurs using the program after the program has already been bound. I
t also uses the | 156 * draw occurs using the program after the program has already been bound. I
t also uses the |
| 157 * GrGpuGL object to bind the textures required by the GrGLEffects. The colo
r and coverage | 157 * GrGpuGL object to bind the textures required by the GrGLProcessors. The c
olor and coverage |
| 158 * stages come from GrGLProgramDesc::Build(). | 158 * stages come from GrGLProgramDesc::Build(). |
| 159 */ | 159 */ |
| 160 void setData(const GrOptDrawState&, | 160 void setData(const GrOptDrawState&, |
| 161 GrGpu::DrawType, | 161 GrGpu::DrawType, |
| 162 const GrEffectStage* geometryProcessor, | 162 const GrGeometryStage* geometryProcessor, |
| 163 const GrEffectStage* colorStages[], | 163 const GrFragmentStage* colorStages[], |
| 164 const GrEffectStage* coverageStages[], | 164 const GrFragmentStage* coverageStages[], |
| 165 const GrDeviceCoordTexture* dstCopy, // can be NULL | 165 const GrDeviceCoordTexture* dstCopy, // can be NULL |
| 166 SharedGLState*); | 166 SharedGLState*); |
| 167 | 167 |
| 168 private: | 168 private: |
| 169 typedef GrGLProgramDataManager::UniformHandle UniformHandle; | 169 typedef GrGLProgramDataManager::UniformHandle UniformHandle; |
| 170 | 170 |
| 171 GrGLProgram(GrGpuGL*, | 171 GrGLProgram(GrGpuGL*, |
| 172 const GrGLProgramDesc&, | 172 const GrGLProgramDesc&, |
| 173 const GrGLProgramBuilder&); | 173 const GrGLProgramBuilder&); |
| 174 | 174 |
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| 202 | 202 |
| 203 GrGLProgramDesc fDesc; | 203 GrGLProgramDesc fDesc; |
| 204 GrGpuGL* fGpu; | 204 GrGpuGL* fGpu; |
| 205 | 205 |
| 206 GrGLProgramDataManager fProgramDataManager; | 206 GrGLProgramDataManager fProgramDataManager; |
| 207 | 207 |
| 208 typedef SkRefCnt INHERITED; | 208 typedef SkRefCnt INHERITED; |
| 209 }; | 209 }; |
| 210 | 210 |
| 211 #endif | 211 #endif |
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