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1 /* | 1 /* |
2 * Copyright 2013 Google Inc. | 2 * Copyright 2013 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 #include "SkDither.h" | 8 #include "SkDither.h" |
9 #include "SkPerlinNoiseShader.h" | 9 #include "SkPerlinNoiseShader.h" |
10 #include "SkColorFilter.h" | 10 #include "SkColorFilter.h" |
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505 | 505 |
506 ///////////////////////////////////////////////////////////////////// | 506 ///////////////////////////////////////////////////////////////////// |
507 | 507 |
508 #if SK_SUPPORT_GPU | 508 #if SK_SUPPORT_GPU |
509 | 509 |
510 #include "GrTBackendEffectFactory.h" | 510 #include "GrTBackendEffectFactory.h" |
511 | 511 |
512 class GrGLPerlinNoise : public GrGLEffect { | 512 class GrGLPerlinNoise : public GrGLEffect { |
513 public: | 513 public: |
514 GrGLPerlinNoise(const GrBackendEffectFactory& factory, | 514 GrGLPerlinNoise(const GrBackendEffectFactory& factory, |
515 const GrEffect& effect); | 515 const GrDrawEffect& drawEffect); |
516 virtual ~GrGLPerlinNoise() {} | 516 virtual ~GrGLPerlinNoise() {} |
517 | 517 |
518 virtual void emitCode(GrGLProgramBuilder*, | 518 virtual void emitCode(GrGLProgramBuilder*, |
519 const GrEffect&, | 519 const GrDrawEffect&, |
520 const GrEffectKey&, | 520 const GrEffectKey&, |
521 const char* outputColor, | 521 const char* outputColor, |
522 const char* inputColor, | 522 const char* inputColor, |
523 const TransformedCoordsArray&, | 523 const TransformedCoordsArray&, |
524 const TextureSamplerArray&) SK_OVERRIDE; | 524 const TextureSamplerArray&) SK_OVERRIDE; |
525 | 525 |
526 virtual void setData(const GrGLProgramDataManager&, const GrEffect&) SK_OVER
RIDE; | 526 virtual void setData(const GrGLProgramDataManager&, const GrDrawEffect&) SK_
OVERRIDE; |
527 | 527 |
528 static inline void GenKey(const GrEffect&, const GrGLCaps&, GrEffectKeyBuild
er* b); | 528 static inline void GenKey(const GrDrawEffect&, const GrGLCaps&, GrEffectKeyB
uilder* b); |
529 | 529 |
530 private: | 530 private: |
531 | 531 |
532 GrGLProgramDataManager::UniformHandle fStitchDataUni; | 532 GrGLProgramDataManager::UniformHandle fStitchDataUni; |
533 SkPerlinNoiseShader::Type fType; | 533 SkPerlinNoiseShader::Type fType; |
534 bool fStitchTiles; | 534 bool fStitchTiles; |
535 int fNumOctaves; | 535 int fNumOctaves; |
536 GrGLProgramDataManager::UniformHandle fBaseFrequencyUni; | 536 GrGLProgramDataManager::UniformHandle fBaseFrequencyUni; |
537 GrGLProgramDataManager::UniformHandle fAlphaUni; | 537 GrGLProgramDataManager::UniformHandle fAlphaUni; |
538 | 538 |
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567 bool stitchTiles() const { return fStitchTiles; } | 567 bool stitchTiles() const { return fStitchTiles; } |
568 const SkVector& baseFrequency() const { return fPaintingData->fBaseFrequency
; } | 568 const SkVector& baseFrequency() const { return fPaintingData->fBaseFrequency
; } |
569 int numOctaves() const { return fNumOctaves; } | 569 int numOctaves() const { return fNumOctaves; } |
570 const SkMatrix& matrix() const { return fCoordTransform.getMatrix(); } | 570 const SkMatrix& matrix() const { return fCoordTransform.getMatrix(); } |
571 uint8_t alpha() const { return fAlpha; } | 571 uint8_t alpha() const { return fAlpha; } |
572 | 572 |
573 typedef GrGLPerlinNoise GLEffect; | 573 typedef GrGLPerlinNoise GLEffect; |
574 | 574 |
575 private: | 575 private: |
576 virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { | 576 virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { |
577 const GrPerlinNoiseEffect& s = sBase.cast<GrPerlinNoiseEffect>(); | 577 const GrPerlinNoiseEffect& s = CastEffect<GrPerlinNoiseEffect>(sBase); |
578 return fType == s.fType && | 578 return fType == s.fType && |
579 fPaintingData->fBaseFrequency == s.fPaintingData->fBaseFrequency
&& | 579 fPaintingData->fBaseFrequency == s.fPaintingData->fBaseFrequency
&& |
580 fNumOctaves == s.fNumOctaves && | 580 fNumOctaves == s.fNumOctaves && |
581 fStitchTiles == s.fStitchTiles && | 581 fStitchTiles == s.fStitchTiles && |
582 fCoordTransform.getMatrix() == s.fCoordTransform.getMatrix() && | 582 fCoordTransform.getMatrix() == s.fCoordTransform.getMatrix() && |
583 fAlpha == s.fAlpha && | 583 fAlpha == s.fAlpha && |
584 fPermutationsAccess.getTexture() == s.fPermutationsAccess.getText
ure() && | 584 fPermutationsAccess.getTexture() == s.fPermutationsAccess.getText
ure() && |
585 fNoiseAccess.getTexture() == s.fNoiseAccess.getTexture() && | 585 fNoiseAccess.getTexture() == s.fNoiseAccess.getTexture() && |
586 fPaintingData->fStitchDataInit == s.fPaintingData->fStitchDataIni
t; | 586 fPaintingData->fStitchDataInit == s.fPaintingData->fStitchDataIni
t; |
587 } | 587 } |
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649 SkPaint paint; | 649 SkPaint paint; |
650 GrColor paintColor; | 650 GrColor paintColor; |
651 GrEffect* effect; | 651 GrEffect* effect; |
652 SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effec
t)); | 652 SkAssertResult(shader->asNewEffect(context, paint, NULL, &paintColor, &effec
t)); |
653 | 653 |
654 SkDELETE(shader); | 654 SkDELETE(shader); |
655 | 655 |
656 return effect; | 656 return effect; |
657 } | 657 } |
658 | 658 |
659 GrGLPerlinNoise::GrGLPerlinNoise(const GrBackendEffectFactory& factory, const Gr
Effect& effect) | 659 GrGLPerlinNoise::GrGLPerlinNoise(const GrBackendEffectFactory& factory, const Gr
DrawEffect& drawEffect) |
660 : INHERITED (factory) | 660 : INHERITED (factory) |
661 , fType(effect.cast<GrPerlinNoiseEffect>().type()) | 661 , fType(drawEffect.castEffect<GrPerlinNoiseEffect>().type()) |
662 , fStitchTiles(effect.cast<GrPerlinNoiseEffect>().stitchTiles()) | 662 , fStitchTiles(drawEffect.castEffect<GrPerlinNoiseEffect>().stitchTiles()) |
663 , fNumOctaves(effect.cast<GrPerlinNoiseEffect>().numOctaves()) { | 663 , fNumOctaves(drawEffect.castEffect<GrPerlinNoiseEffect>().numOctaves()) { |
664 } | 664 } |
665 | 665 |
666 void GrGLPerlinNoise::emitCode(GrGLProgramBuilder* builder, | 666 void GrGLPerlinNoise::emitCode(GrGLProgramBuilder* builder, |
667 const GrEffect&, | 667 const GrDrawEffect&, |
668 const GrEffectKey& key, | 668 const GrEffectKey& key, |
669 const char* outputColor, | 669 const char* outputColor, |
670 const char* inputColor, | 670 const char* inputColor, |
671 const TransformedCoordsArray& coords, | 671 const TransformedCoordsArray& coords, |
672 const TextureSamplerArray& samplers) { | 672 const TextureSamplerArray& samplers) { |
673 sk_ignore_unused_variable(inputColor); | 673 sk_ignore_unused_variable(inputColor); |
674 | 674 |
675 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); | 675 GrGLFragmentShaderBuilder* fsBuilder = builder->getFragmentShaderBuilder(); |
676 SkString vCoords = fsBuilder->ensureFSCoords2D(coords, 0); | 676 SkString vCoords = fsBuilder->ensureFSCoords2D(coords, 0); |
677 | 677 |
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912 fsBuilder->codeAppendf("\n\t\t%s.a *= %s;", outputColor, alphaUni); | 912 fsBuilder->codeAppendf("\n\t\t%s.a *= %s;", outputColor, alphaUni); |
913 | 913 |
914 // Clamp values | 914 // Clamp values |
915 fsBuilder->codeAppendf("\n\t\t%s = clamp(%s, 0.0, 1.0);", outputColor, outpu
tColor); | 915 fsBuilder->codeAppendf("\n\t\t%s = clamp(%s, 0.0, 1.0);", outputColor, outpu
tColor); |
916 | 916 |
917 // Pre-multiply the result | 917 // Pre-multiply the result |
918 fsBuilder->codeAppendf("\n\t\t%s = vec4(%s.rgb * %s.aaa, %s.a);\n", | 918 fsBuilder->codeAppendf("\n\t\t%s = vec4(%s.rgb * %s.aaa, %s.a);\n", |
919 outputColor, outputColor, outputColor, outputColor); | 919 outputColor, outputColor, outputColor, outputColor); |
920 } | 920 } |
921 | 921 |
922 void GrGLPerlinNoise::GenKey(const GrEffect& effect, const GrGLCaps&, GrEffectKe
yBuilder* b) { | 922 void GrGLPerlinNoise::GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&, Gr
EffectKeyBuilder* b) { |
923 const GrPerlinNoiseEffect& turbulence = effect.cast<GrPerlinNoiseEffect>(); | 923 const GrPerlinNoiseEffect& turbulence = drawEffect.castEffect<GrPerlinNoiseE
ffect>(); |
924 | 924 |
925 uint32_t key = turbulence.numOctaves(); | 925 uint32_t key = turbulence.numOctaves(); |
926 | 926 |
927 key = key << 3; // Make room for next 3 bits | 927 key = key << 3; // Make room for next 3 bits |
928 | 928 |
929 switch (turbulence.type()) { | 929 switch (turbulence.type()) { |
930 case SkPerlinNoiseShader::kFractalNoise_Type: | 930 case SkPerlinNoiseShader::kFractalNoise_Type: |
931 key |= 0x1; | 931 key |= 0x1; |
932 break; | 932 break; |
933 case SkPerlinNoiseShader::kTurbulence_Type: | 933 case SkPerlinNoiseShader::kTurbulence_Type: |
934 key |= 0x2; | 934 key |= 0x2; |
935 break; | 935 break; |
936 default: | 936 default: |
937 // leave key at 0 | 937 // leave key at 0 |
938 break; | 938 break; |
939 } | 939 } |
940 | 940 |
941 if (turbulence.stitchTiles()) { | 941 if (turbulence.stitchTiles()) { |
942 key |= 0x4; // Flip the 3rd bit if tile stitching is on | 942 key |= 0x4; // Flip the 3rd bit if tile stitching is on |
943 } | 943 } |
944 | 944 |
945 b->add32(key); | 945 b->add32(key); |
946 } | 946 } |
947 | 947 |
948 void GrGLPerlinNoise::setData(const GrGLProgramDataManager& pdman, const GrEffec
t& effect) { | 948 void GrGLPerlinNoise::setData(const GrGLProgramDataManager& pdman, const GrDrawE
ffect& drawEffect) { |
949 INHERITED::setData(pdman, effect); | 949 INHERITED::setData(pdman, drawEffect); |
950 | 950 |
951 const GrPerlinNoiseEffect& turbulence = effect.cast<GrPerlinNoiseEffect>(); | 951 const GrPerlinNoiseEffect& turbulence = drawEffect.castEffect<GrPerlinNoiseE
ffect>(); |
952 | 952 |
953 const SkVector& baseFrequency = turbulence.baseFrequency(); | 953 const SkVector& baseFrequency = turbulence.baseFrequency(); |
954 pdman.set2f(fBaseFrequencyUni, baseFrequency.fX, baseFrequency.fY); | 954 pdman.set2f(fBaseFrequencyUni, baseFrequency.fX, baseFrequency.fY); |
955 pdman.set1f(fAlphaUni, SkScalarDiv(SkIntToScalar(turbulence.alpha()), SkIntT
oScalar(255))); | 955 pdman.set1f(fAlphaUni, SkScalarDiv(SkIntToScalar(turbulence.alpha()), SkIntT
oScalar(255))); |
956 | 956 |
957 if (turbulence.stitchTiles()) { | 957 if (turbulence.stitchTiles()) { |
958 const SkPerlinNoiseShader::StitchData& stitchData = turbulence.stitchDat
a(); | 958 const SkPerlinNoiseShader::StitchData& stitchData = turbulence.stitchDat
a(); |
959 pdman.set2f(fStitchDataUni, SkIntToScalar(stitchData.fWidth), | 959 pdman.set2f(fStitchDataUni, SkIntToScalar(stitchData.fWidth), |
960 SkIntToScalar(stitchData.fHeight)); | 960 SkIntToScalar(stitchData.fHeight)); |
961 } | 961 } |
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1062 str->append(" seed: "); | 1062 str->append(" seed: "); |
1063 str->appendScalar(fSeed); | 1063 str->appendScalar(fSeed); |
1064 str->append(" stitch tiles: "); | 1064 str->append(" stitch tiles: "); |
1065 str->append(fStitchTiles ? "true " : "false "); | 1065 str->append(fStitchTiles ? "true " : "false "); |
1066 | 1066 |
1067 this->INHERITED::toString(str); | 1067 this->INHERITED::toString(str); |
1068 | 1068 |
1069 str->append(")"); | 1069 str->append(")"); |
1070 } | 1070 } |
1071 #endif | 1071 #endif |
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