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| 1 /* | 1 /* |
| 2 * Copyright 2012 Google Inc. | 2 * Copyright 2012 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 #ifndef GrGLShaderBuilder_DEFINED | 8 #ifndef GrGLShaderBuilder_DEFINED |
| 9 #define GrGLShaderBuilder_DEFINED | 9 #define GrGLShaderBuilder_DEFINED |
| 10 | 10 |
| (...skipping 24 matching lines...) Expand all Loading... |
| 35 TextureSampler() | 35 TextureSampler() |
| 36 : fConfigComponentMask(0) { | 36 : fConfigComponentMask(0) { |
| 37 // we will memcpy the first 4 bytes from passed in swizzle. This ens
ures the string is | 37 // we will memcpy the first 4 bytes from passed in swizzle. This ens
ures the string is |
| 38 // terminated. | 38 // terminated. |
| 39 fSwizzle[4] = '\0'; | 39 fSwizzle[4] = '\0'; |
| 40 } | 40 } |
| 41 | 41 |
| 42 TextureSampler(const TextureSampler& other) { *this = other; } | 42 TextureSampler(const TextureSampler& other) { *this = other; } |
| 43 | 43 |
| 44 TextureSampler& operator= (const TextureSampler& other) { | 44 TextureSampler& operator= (const TextureSampler& other) { |
| 45 GrAssert(0 == fConfigComponentMask); | 45 SkASSERT(0 == fConfigComponentMask); |
| 46 GrAssert(!fSamplerUniform.isValid()); | 46 SkASSERT(!fSamplerUniform.isValid()); |
| 47 | 47 |
| 48 fConfigComponentMask = other.fConfigComponentMask; | 48 fConfigComponentMask = other.fConfigComponentMask; |
| 49 fSamplerUniform = other.fSamplerUniform; | 49 fSamplerUniform = other.fSamplerUniform; |
| 50 return *this; | 50 return *this; |
| 51 } | 51 } |
| 52 | 52 |
| 53 // bitfield of GrColorComponentFlags present in the texture's config. | 53 // bitfield of GrColorComponentFlags present in the texture's config. |
| 54 uint32_t configComponentMask() const { return fConfigComponentMask; } | 54 uint32_t configComponentMask() const { return fConfigComponentMask; } |
| 55 | 55 |
| 56 const char* swizzle() const { return fSwizzle; } | 56 const char* swizzle() const { return fSwizzle; } |
| 57 | 57 |
| 58 bool isInitialized() const { return 0 != fConfigComponentMask; } | 58 bool isInitialized() const { return 0 != fConfigComponentMask; } |
| 59 | 59 |
| 60 private: | 60 private: |
| 61 // The idx param is used to ensure multiple samplers within a single eff
ect have unique | 61 // The idx param is used to ensure multiple samplers within a single eff
ect have unique |
| 62 // uniform names. swizzle is a four char max string made up of chars 'r'
, 'g', 'b', and 'a'. | 62 // uniform names. swizzle is a four char max string made up of chars 'r'
, 'g', 'b', and 'a'. |
| 63 void init(GrGLShaderBuilder* builder, | 63 void init(GrGLShaderBuilder* builder, |
| 64 uint32_t configComponentMask, | 64 uint32_t configComponentMask, |
| 65 const char* swizzle, | 65 const char* swizzle, |
| 66 int idx) { | 66 int idx) { |
| 67 GrAssert(!this->isInitialized()); | 67 SkASSERT(!this->isInitialized()); |
| 68 GrAssert(0 != configComponentMask); | 68 SkASSERT(0 != configComponentMask); |
| 69 GrAssert(!fSamplerUniform.isValid()); | 69 SkASSERT(!fSamplerUniform.isValid()); |
| 70 | 70 |
| 71 GrAssert(NULL != builder); | 71 SkASSERT(NULL != builder); |
| 72 SkString name; | 72 SkString name; |
| 73 name.printf("Sampler%d", idx); | 73 name.printf("Sampler%d", idx); |
| 74 fSamplerUniform = builder->addUniform(GrGLShaderBuilder::kFragment_S
haderType, | 74 fSamplerUniform = builder->addUniform(GrGLShaderBuilder::kFragment_S
haderType, |
| 75 kSampler2D_GrSLType, | 75 kSampler2D_GrSLType, |
| 76 name.c_str()); | 76 name.c_str()); |
| 77 GrAssert(fSamplerUniform.isValid()); | 77 SkASSERT(fSamplerUniform.isValid()); |
| 78 | 78 |
| 79 fConfigComponentMask = configComponentMask; | 79 fConfigComponentMask = configComponentMask; |
| 80 memcpy(fSwizzle, swizzle, 4); | 80 memcpy(fSwizzle, swizzle, 4); |
| 81 } | 81 } |
| 82 | 82 |
| 83 void init(GrGLShaderBuilder* builder, const GrTextureAccess* access, int
idx) { | 83 void init(GrGLShaderBuilder* builder, const GrTextureAccess* access, int
idx) { |
| 84 GrAssert(NULL != access); | 84 SkASSERT(NULL != access); |
| 85 this->init(builder, | 85 this->init(builder, |
| 86 GrPixelConfigComponentMask(access->getTexture()->config()
), | 86 GrPixelConfigComponentMask(access->getTexture()->config()
), |
| 87 access->getSwizzle(), | 87 access->getSwizzle(), |
| 88 idx); | 88 idx); |
| 89 } | 89 } |
| 90 | 90 |
| 91 uint32_t fConfigComponentMask; | 91 uint32_t fConfigComponentMask; |
| 92 char fSwizzle[5]; | 92 char fSwizzle[5]; |
| 93 GrGLUniformManager::UniformHandle fSamplerUniform; | 93 GrGLUniformManager::UniformHandle fSamplerUniform; |
| 94 | 94 |
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| 368 } | 368 } |
| 369 | 369 |
| 370 int stageIndex() const { | 370 int stageIndex() const { |
| 371 this->validate(); | 371 this->validate(); |
| 372 return fCurrentIndex; | 372 return fCurrentIndex; |
| 373 } | 373 } |
| 374 | 374 |
| 375 class AutoStageRestore : GrNoncopyable { | 375 class AutoStageRestore : GrNoncopyable { |
| 376 public: | 376 public: |
| 377 AutoStageRestore(CodeStage* codeStage, const GrEffectStage* newStage
) { | 377 AutoStageRestore(CodeStage* codeStage, const GrEffectStage* newStage
) { |
| 378 GrAssert(NULL != codeStage); | 378 SkASSERT(NULL != codeStage); |
| 379 fSavedIndex = codeStage->fCurrentIndex; | 379 fSavedIndex = codeStage->fCurrentIndex; |
| 380 fSavedEffectStage = codeStage->fEffectStage; | 380 fSavedEffectStage = codeStage->fEffectStage; |
| 381 | 381 |
| 382 if (NULL == newStage) { | 382 if (NULL == newStage) { |
| 383 codeStage->fCurrentIndex = -1; | 383 codeStage->fCurrentIndex = -1; |
| 384 } else { | 384 } else { |
| 385 codeStage->fCurrentIndex = codeStage->fNextIndex++; | 385 codeStage->fCurrentIndex = codeStage->fNextIndex++; |
| 386 } | 386 } |
| 387 codeStage->fEffectStage = newStage; | 387 codeStage->fEffectStage = newStage; |
| 388 | 388 |
| 389 fCodeStage = codeStage; | 389 fCodeStage = codeStage; |
| 390 } | 390 } |
| 391 ~AutoStageRestore() { | 391 ~AutoStageRestore() { |
| 392 fCodeStage->fCurrentIndex = fSavedIndex; | 392 fCodeStage->fCurrentIndex = fSavedIndex; |
| 393 fCodeStage->fEffectStage = fSavedEffectStage; | 393 fCodeStage->fEffectStage = fSavedEffectStage; |
| 394 } | 394 } |
| 395 private: | 395 private: |
| 396 CodeStage* fCodeStage; | 396 CodeStage* fCodeStage; |
| 397 int fSavedIndex; | 397 int fSavedIndex; |
| 398 const GrEffectStage* fSavedEffectStage; | 398 const GrEffectStage* fSavedEffectStage; |
| 399 }; | 399 }; |
| 400 private: | 400 private: |
| 401 void validate() const { GrAssert((NULL == fEffectStage) == (-1 == fCurre
ntIndex)); } | 401 void validate() const { SkASSERT((NULL == fEffectStage) == (-1 == fCurre
ntIndex)); } |
| 402 int fNextIndex; | 402 int fNextIndex; |
| 403 int fCurrentIndex; | 403 int fCurrentIndex; |
| 404 const GrEffectStage* fEffectStage; | 404 const GrEffectStage* fEffectStage; |
| 405 } fCodeStage; | 405 } fCodeStage; |
| 406 | 406 |
| 407 /** | 407 /** |
| 408 * Features that should only be enabled by GrGLShaderBuilder itself. | 408 * Features that should only be enabled by GrGLShaderBuilder itself. |
| 409 */ | 409 */ |
| 410 enum GLSLPrivateFeature { | 410 enum GLSLPrivateFeature { |
| 411 kFragCoordConventions_GLSLPrivateFeature = kLastGLSLFeature + 1, | 411 kFragCoordConventions_GLSLPrivateFeature = kLastGLSLFeature + 1, |
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| 459 bool fTopLeftFragPosRead; | 459 bool fTopLeftFragPosRead; |
| 460 | 460 |
| 461 SkSTArray<10, AttributePair, true> fEffectAttributes; | 461 SkSTArray<10, AttributePair, true> fEffectAttributes; |
| 462 | 462 |
| 463 GrGLShaderVar* fPositionVar; | 463 GrGLShaderVar* fPositionVar; |
| 464 GrGLShaderVar* fLocalCoordsVar; | 464 GrGLShaderVar* fLocalCoordsVar; |
| 465 | 465 |
| 466 }; | 466 }; |
| 467 | 467 |
| 468 #endif | 468 #endif |
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