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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 SkGradientShaderPriv_DEFINED | 8 #ifndef SkGradientShaderPriv_DEFINED |
9 #define SkGradientShaderPriv_DEFINED | 9 #define SkGradientShaderPriv_DEFINED |
10 | 10 |
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407 protected: | 407 protected: |
408 /** | 408 /** |
409 * Subclasses must call this. It will return a key for the part of the shade
r code controlled | 409 * Subclasses must call this. It will return a key for the part of the shade
r code controlled |
410 * by the base class. The subclasses must stick it in their key and then pas
s it to the below | 410 * by the base class. The subclasses must stick it in their key and then pas
s it to the below |
411 * emit* functions from their emitCode function. | 411 * emit* functions from their emitCode function. |
412 */ | 412 */ |
413 static uint32_t GenBaseGradientKey(const GrProcessor&); | 413 static uint32_t GenBaseGradientKey(const GrProcessor&); |
414 | 414 |
415 // Emits the uniform used as the y-coord to texture samples in derived class
es. Subclasses | 415 // Emits the uniform used as the y-coord to texture samples in derived class
es. Subclasses |
416 // should call this method from their emitCode(). | 416 // should call this method from their emitCode(). |
417 void emitUniforms(GrGLFPBuilder* builder, const GrGradientEffect&); | 417 void emitUniforms(GrGLSLFPBuilder* builder, const GrGradientEffect&); |
418 | 418 |
419 | 419 |
420 // emit code that gets a fragment's color from an expression for t; Has bran
ches for 3 separate | 420 // emit code that gets a fragment's color from an expression for t; Has bran
ches for 3 separate |
421 // control flows inside -- 2 color gradients, 3 color symmetric gradients (b
oth using | 421 // control flows inside -- 2 color gradients, 3 color symmetric gradients (b
oth using |
422 // native GLSL mix), and 4+ color gradients that use the traditional texture
lookup. | 422 // native GLSL mix), and 4+ color gradients that use the traditional texture
lookup. |
423 void emitColor(GrGLFPBuilder* builder, | 423 void emitColor(GrGLSLFPBuilder* builder, |
424 const GrGradientEffect&, | 424 const GrGradientEffect&, |
425 const char* gradientTValue, | 425 const char* gradientTValue, |
426 const char* outputColor, | 426 const char* outputColor, |
427 const char* inputColor, | 427 const char* inputColor, |
428 const TextureSamplerArray& samplers); | 428 const TextureSamplerArray& samplers); |
429 | 429 |
430 private: | 430 private: |
431 enum { | 431 enum { |
432 kPremulTypeKeyBitCnt = 1, | 432 kPremulTypeKeyBitCnt = 1, |
433 kPremulTypeMask = 1, | 433 kPremulTypeMask = 1, |
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449 GrGLSLProgramDataManager::UniformHandle fColorStartUni; | 449 GrGLSLProgramDataManager::UniformHandle fColorStartUni; |
450 GrGLSLProgramDataManager::UniformHandle fColorMidUni; | 450 GrGLSLProgramDataManager::UniformHandle fColorMidUni; |
451 GrGLSLProgramDataManager::UniformHandle fColorEndUni; | 451 GrGLSLProgramDataManager::UniformHandle fColorEndUni; |
452 | 452 |
453 typedef GrGLFragmentProcessor INHERITED; | 453 typedef GrGLFragmentProcessor INHERITED; |
454 }; | 454 }; |
455 | 455 |
456 #endif | 456 #endif |
457 | 457 |
458 #endif | 458 #endif |
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