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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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927 | 927 |
928 SkMatrix matrix = viewM; | 928 SkMatrix matrix = viewM; |
929 matrix.preConcat(localMatrix); | 929 matrix.preConcat(localMatrix); |
930 | 930 |
931 if (0 == fNumOctaves) { | 931 if (0 == fNumOctaves) { |
932 if (kFractalNoise_Type == fType) { | 932 if (kFractalNoise_Type == fType) { |
933 // Extract the incoming alpha and emit rgba = (a/4, a/4, a/4, a/2) | 933 // Extract the incoming alpha and emit rgba = (a/4, a/4, a/4, a/2) |
934 SkAutoTUnref<const GrFragmentProcessor> inner( | 934 SkAutoTUnref<const GrFragmentProcessor> inner( |
935 GrConstColorProcessor::Create(0x80404040, | 935 GrConstColorProcessor::Create(0x80404040, |
936 GrConstColorProcessor::kModulateRG
BA_InputMode)); | 936 GrConstColorProcessor::kModulateRG
BA_InputMode)); |
937 return GrFragmentProcessor::MulOuputByInputAlpha(inner); | 937 return GrFragmentProcessor::MulOutputByInputAlpha(inner); |
938 } | 938 } |
939 // Emit zero. | 939 // Emit zero. |
940 return GrConstColorProcessor::Create(0x0, GrConstColorProcessor::kIgnore
_InputMode); | 940 return GrConstColorProcessor::Create(0x0, GrConstColorProcessor::kIgnore
_InputMode); |
941 } | 941 } |
942 | 942 |
943 // Either we don't stitch tiles, either we have a valid tile size | 943 // Either we don't stitch tiles, either we have a valid tile size |
944 SkASSERT(!fStitchTiles || !fTileSize.isEmpty()); | 944 SkASSERT(!fStitchTiles || !fTileSize.isEmpty()); |
945 | 945 |
946 SkPerlinNoiseShader::PaintingData* paintingData = | 946 SkPerlinNoiseShader::PaintingData* paintingData = |
947 new PaintingData(fTileSize, fSeed, fBaseFrequencyX, fBaseFrequencyY,
matrix); | 947 new PaintingData(fTileSize, fSeed, fBaseFrequencyX, fBaseFrequencyY,
matrix); |
948 SkAutoTUnref<GrTexture> permutationsTexture( | 948 SkAutoTUnref<GrTexture> permutationsTexture( |
949 GrRefCachedBitmapTexture(context, paintingData->getPermutationsBitmap(),
nullptr)); | 949 GrRefCachedBitmapTexture(context, paintingData->getPermutationsBitmap(),
nullptr)); |
950 SkAutoTUnref<GrTexture> noiseTexture( | 950 SkAutoTUnref<GrTexture> noiseTexture( |
951 GrRefCachedBitmapTexture(context, paintingData->getNoiseBitmap(), nullpt
r)); | 951 GrRefCachedBitmapTexture(context, paintingData->getNoiseBitmap(), nullpt
r)); |
952 | 952 |
953 SkMatrix m = viewM; | 953 SkMatrix m = viewM; |
954 m.setTranslateX(-localMatrix.getTranslateX() + SK_Scalar1); | 954 m.setTranslateX(-localMatrix.getTranslateX() + SK_Scalar1); |
955 m.setTranslateY(-localMatrix.getTranslateY() + SK_Scalar1); | 955 m.setTranslateY(-localMatrix.getTranslateY() + SK_Scalar1); |
956 if ((permutationsTexture) && (noiseTexture)) { | 956 if ((permutationsTexture) && (noiseTexture)) { |
957 SkAutoTUnref<GrFragmentProcessor> inner( | 957 SkAutoTUnref<GrFragmentProcessor> inner( |
958 GrPerlinNoiseEffect::Create(procDataManager, | 958 GrPerlinNoiseEffect::Create(procDataManager, |
959 fType, | 959 fType, |
960 fNumOctaves, | 960 fNumOctaves, |
961 fStitchTiles, | 961 fStitchTiles, |
962 paintingData, | 962 paintingData, |
963 permutationsTexture, noiseTexture, | 963 permutationsTexture, noiseTexture, |
964 m)); | 964 m)); |
965 return GrFragmentProcessor::MulOuputByInputAlpha(inner); | 965 return GrFragmentProcessor::MulOutputByInputAlpha(inner); |
966 } | 966 } |
967 delete paintingData; | 967 delete paintingData; |
968 return nullptr; | 968 return nullptr; |
969 } | 969 } |
970 | 970 |
971 #endif | 971 #endif |
972 | 972 |
973 #ifndef SK_IGNORE_TO_STRING | 973 #ifndef SK_IGNORE_TO_STRING |
974 void SkPerlinNoiseShader::toString(SkString* str) const { | 974 void SkPerlinNoiseShader::toString(SkString* str) const { |
975 str->append("SkPerlinNoiseShader: ("); | 975 str->append("SkPerlinNoiseShader: ("); |
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995 str->append(" seed: "); | 995 str->append(" seed: "); |
996 str->appendScalar(fSeed); | 996 str->appendScalar(fSeed); |
997 str->append(" stitch tiles: "); | 997 str->append(" stitch tiles: "); |
998 str->append(fStitchTiles ? "true " : "false "); | 998 str->append(fStitchTiles ? "true " : "false "); |
999 | 999 |
1000 this->INHERITED::toString(str); | 1000 this->INHERITED::toString(str); |
1001 | 1001 |
1002 str->append(")"); | 1002 str->append(")"); |
1003 } | 1003 } |
1004 #endif | 1004 #endif |
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