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1 | 1 |
2 /* | 2 /* |
3 * Copyright 2012 Google Inc. | 3 * Copyright 2012 Google Inc. |
4 * | 4 * |
5 * Use of this source code is governed by a BSD-style license that can be | 5 * Use of this source code is governed by a BSD-style license that can be |
6 * found in the LICENSE file. | 6 * found in the LICENSE file. |
7 */ | 7 */ |
8 | 8 |
9 #include "SkTwoPointRadialGradient.h" | 9 #include "SkTwoPointRadialGradient.h" |
10 | 10 |
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561 , fFSVaryingName(NULL) | 561 , fFSVaryingName(NULL) |
562 , fCachedCenter(SK_ScalarMax) | 562 , fCachedCenter(SK_ScalarMax) |
563 , fCachedRadius(-SK_ScalarMax) | 563 , fCachedRadius(-SK_ScalarMax) |
564 , fCachedPosRoot(0) { | 564 , fCachedPosRoot(0) { |
565 | 565 |
566 const GrRadial2Gradient& data = processor.cast<GrRadial2Gradient>(); | 566 const GrRadial2Gradient& data = processor.cast<GrRadial2Gradient>(); |
567 fIsDegenerate = data.isDegenerate(); | 567 fIsDegenerate = data.isDegenerate(); |
568 } | 568 } |
569 | 569 |
570 void GrGLRadial2Gradient::emitCode(GrGLFPBuilder* builder, | 570 void GrGLRadial2Gradient::emitCode(GrGLFPBuilder* builder, |
571 const GrFragmentProcessor&, | 571 const GrFragmentProcessor& fp, |
572 const GrProcessorKey& key, | 572 const GrProcessorKey& key, |
573 const char* outputColor, | 573 const char* outputColor, |
574 const char* inputColor, | 574 const char* inputColor, |
575 const TransformedCoordsArray& coords, | 575 const TransformedCoordsArray& coords, |
576 const TextureSamplerArray& samplers) { | 576 const TextureSamplerArray& samplers) { |
577 uint32_t baseKey = key.get32(0); | 577 const GrGradientEffect& ge = fp.cast<GrGradientEffect>(); |
578 this->emitUniforms(builder, baseKey); | 578 this->emitUniforms(builder, ge); |
579 fParamUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibilit
y, | 579 fParamUni = builder->addUniformArray(GrGLProgramBuilder::kFragment_Visibilit
y, |
580 kFloat_GrSLType, "Radial2FSParams", 6); | 580 kFloat_GrSLType, "Radial2FSParams", 6); |
581 | 581 |
582 SkString cName("c"); | 582 SkString cName("c"); |
583 SkString ac4Name("ac4"); | 583 SkString ac4Name("ac4"); |
584 SkString rootName("root"); | 584 SkString rootName("root"); |
585 SkString t; | 585 SkString t; |
586 SkString p0; | 586 SkString p0; |
587 SkString p1; | 587 SkString p1; |
588 SkString p2; | 588 SkString p2; |
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631 ac4Name.c_str()); | 631 ac4Name.c_str()); |
632 | 632 |
633 // t is: (-b + params[5] * sqrt(b^2-4ac)) * params[1] | 633 // t is: (-b + params[5] * sqrt(b^2-4ac)) * params[1] |
634 t.printf("(-%s + %s * %s) * %s", bVar.c_str(), p5.c_str(), | 634 t.printf("(-%s + %s * %s) * %s", bVar.c_str(), p5.c_str(), |
635 rootName.c_str(), p1.c_str()); | 635 rootName.c_str(), p1.c_str()); |
636 } else { | 636 } else { |
637 // t is: -c/b | 637 // t is: -c/b |
638 t.printf("-%s / %s", cName.c_str(), bVar.c_str()); | 638 t.printf("-%s / %s", cName.c_str(), bVar.c_str()); |
639 } | 639 } |
640 | 640 |
641 this->emitColor(builder, t.c_str(), baseKey, outputColor, inputColor, sample
rs); | 641 this->emitColor(builder, ge, t.c_str(), outputColor, inputColor, samplers); |
642 } | 642 } |
643 | 643 |
644 void GrGLRadial2Gradient::setData(const GrGLProgramDataManager& pdman, | 644 void GrGLRadial2Gradient::setData(const GrGLProgramDataManager& pdman, |
645 const GrProcessor& processor) { | 645 const GrProcessor& processor) { |
646 INHERITED::setData(pdman, processor); | 646 INHERITED::setData(pdman, processor); |
647 const GrRadial2Gradient& data = processor.cast<GrRadial2Gradient>(); | 647 const GrRadial2Gradient& data = processor.cast<GrRadial2Gradient>(); |
648 SkASSERT(data.isDegenerate() == fIsDegenerate); | 648 SkASSERT(data.isDegenerate() == fIsDegenerate); |
649 SkScalar centerX1 = data.center(); | 649 SkScalar centerX1 = data.center(); |
650 SkScalar radius0 = data.radius(); | 650 SkScalar radius0 = data.radius(); |
651 if (fCachedCenter != centerX1 || | 651 if (fCachedCenter != centerX1 || |
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720 | 720 |
721 #else | 721 #else |
722 | 722 |
723 bool SkTwoPointRadialGradient::asFragmentProcessor(GrContext*, const SkPaint&, c
onst SkMatrix*, | 723 bool SkTwoPointRadialGradient::asFragmentProcessor(GrContext*, const SkPaint&, c
onst SkMatrix*, |
724 GrColor*, GrFragmentProcessor
**) const { | 724 GrColor*, GrFragmentProcessor
**) const { |
725 SkDEBUGFAIL("Should not call in GPU-less build"); | 725 SkDEBUGFAIL("Should not call in GPU-less build"); |
726 return false; | 726 return false; |
727 } | 727 } |
728 | 728 |
729 #endif | 729 #endif |
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