17839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger/* 27839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger * Copyright 2013 Google Inc. 37839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger * 47839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger * Use of this source code is governed by a BSD-style license that can be 57839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger * found in the LICENSE file. 67839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger */ 77839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 87839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "SkDither.h" 97839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "SkPerlinNoiseShader.h" 107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "SkFlattenableBuffers.h" 117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "SkShader.h" 127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "SkUnPreMultiply.h" 137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "SkString.h" 147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#if SK_SUPPORT_GPU 167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "GrContext.h" 177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "gl/GrGLEffect.h" 187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "gl/GrGLEffectMatrix.h" 197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "GrTBackendEffectFactory.h" 207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "SkGr.h" 217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#endif 227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerstatic const int kBlockSize = 256; 247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerstatic const int kBlockMask = kBlockSize - 1; 257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerstatic const int kPerlinNoise = 4096; 267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerstatic const int kRandMaximum = SK_MaxS32; // 2**31 - 1 277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergernamespace { 297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger// noiseValue is the color component's value (or color) 317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger// limitValue is the maximum perlin noise array index value allowed 327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger// newValue is the current noise dimension (either width or height) 337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerinline int checkNoise(int noiseValue, int limitValue, int newValue) { 347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // If the noise value would bring us out of bounds of the current noise array while we are 357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // stiching noise tiles together, wrap the noise around the current dimension of the noise to 367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // stay within the array bounds in a continuous fashion (so that tiling lines are not visible) 377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (noiseValue >= limitValue) { 387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseValue -= newValue; 397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (noiseValue >= limitValue - 1) { 417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseValue -= newValue - 1; 427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return noiseValue; 447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerinline SkScalar smoothCurve(SkScalar t) { 477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static const SkScalar SK_Scalar3 = SkFloatToScalar(3.0f); 487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // returns t * t * (3 - 2 * t) 507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return SkScalarMul(SkScalarSquare(t), SK_Scalar3 - 2 * t); 517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} // end namespace 547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerstruct SkPerlinNoiseShader::StitchData { 567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger StitchData() 577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger : fWidth(0) 587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fWrapX(0) 597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fHeight(0) 607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fWrapY(0) 617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger {} 627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger bool operator==(const StitchData& other) const { 647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return fWidth == other.fWidth && 657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fWrapX == other.fWrapX && 667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fHeight == other.fHeight && 677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fWrapY == other.fWrapY; 687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int fWidth; // How much to subtract to wrap for stitching. 717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int fWrapX; // Minimum value to wrap. 727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int fHeight; 737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int fWrapY; 747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger}; 757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerstruct SkPerlinNoiseShader::PaintingData { 777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger PaintingData(const SkISize& tileSize) 787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger : fSeed(0) 797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fTileSize(tileSize) 807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fPermutationsBitmap(NULL) 817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fNoiseBitmap(NULL) 827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger {} 837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger ~PaintingData() 857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 867839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkDELETE(fPermutationsBitmap); 877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkDELETE(fNoiseBitmap); 887839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 907839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int fSeed; 917839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uint8_t fLatticeSelector[kBlockSize]; 927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uint16_t fNoise[4][kBlockSize][2]; 937839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPoint fGradient[4][kBlockSize]; 947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkISize fTileSize; 957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkVector fBaseFrequency; 967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger StitchData fStitchDataInit; 977839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerprivate: 997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkBitmap* fPermutationsBitmap; 1017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkBitmap* fNoiseBitmap; 1027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerpublic: 1047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger inline int random() { 1067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static const int gRandAmplitude = 16807; // 7**5; primitive root of m 1077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static const int gRandQ = 127773; // m / a 1087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static const int gRandR = 2836; // m % a 1097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int result = gRandAmplitude * (fSeed % gRandQ) - gRandR * (fSeed / gRandQ); 1117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (result <= 0) 1127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger result += kRandMaximum; 1137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fSeed = result; 1147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return result; 1157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger void init(SkScalar seed) 1187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 1197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static const SkScalar gInvBlockSizef = SkScalarInvert(SkIntToScalar(kBlockSize)); 1207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // The seed value clamp to the range [1, kRandMaximum - 1]. 1227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fSeed = SkScalarRoundToInt(seed); 1237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fSeed <= 0) { 1247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fSeed = -(fSeed % (kRandMaximum - 1)) + 1; 1257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fSeed > kRandMaximum - 1) { 1277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fSeed = kRandMaximum - 1; 1287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int channel = 0; channel < 4; ++channel) { 1307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int i = 0; i < kBlockSize; ++i) { 1317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fLatticeSelector[i] = i; 1327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoise[channel][i][0] = (random() % (2 * kBlockSize)); 1337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoise[channel][i][1] = (random() % (2 * kBlockSize)); 1347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int i = kBlockSize - 1; i > 0; --i) { 1377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int k = fLatticeSelector[i]; 1387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int j = random() % kBlockSize; 1397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkASSERT(j >= 0); 1407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkASSERT(j < kBlockSize); 1417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fLatticeSelector[i] = fLatticeSelector[j]; 1427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fLatticeSelector[j] = k; 1437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Perform the permutations now 1467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 1477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Copy noise data 1487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uint16_t noise[4][kBlockSize][2]; 1497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int i = 0; i < kBlockSize; ++i) { 1507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int channel = 0; channel < 4; ++channel) { 1517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int j = 0; j < 2; ++j) { 1527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noise[channel][i][j] = fNoise[channel][i][j]; 1537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Do permutations on noise data 1577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int i = 0; i < kBlockSize; ++i) { 1587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int channel = 0; channel < 4; ++channel) { 1597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int j = 0; j < 2; ++j) { 1607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoise[channel][i][j] = noise[channel][fLatticeSelector[i]][j]; 1617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Half of the largest possible value for 16 bit unsigned int 16758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger static const SkScalar gHalfMax16bits = SkFloatToScalar(32767.5f); 1687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Compute gradients from permutated noise data 1707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int channel = 0; channel < 4; ++channel) { 1717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int i = 0; i < kBlockSize; ++i) { 1727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fGradient[channel][i] = SkPoint::Make( 1737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMul(SkIntToScalar(fNoise[channel][i][0] - kBlockSize), 1747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger gInvBlockSizef), 1757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMul(SkIntToScalar(fNoise[channel][i][1] - kBlockSize), 1767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger gInvBlockSizef)); 1777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fGradient[channel][i].normalize(); 1787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Put the normalized gradient back into the noise data 1797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoise[channel][i][0] = SkScalarRoundToInt(SkScalarMul( 18058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger fGradient[channel][i].fX + SK_Scalar1, gHalfMax16bits)); 1817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoise[channel][i][1] = SkScalarRoundToInt(SkScalarMul( 18258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger fGradient[channel][i].fY + SK_Scalar1, gHalfMax16bits)); 1837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1867839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Invalidate bitmaps 1877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkDELETE(fPermutationsBitmap); 1887839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPermutationsBitmap = NULL; 1897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkDELETE(fNoiseBitmap); 1907839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoiseBitmap = NULL; 1917839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 1927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 1937839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger void stitch() { 1947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar tileWidth = SkIntToScalar(fTileSize.width()); 1957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar tileHeight = SkIntToScalar(fTileSize.height()); 1967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkASSERT(tileWidth > 0 && tileHeight > 0); 1977839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // When stitching tiled turbulence, the frequencies must be adjusted 1987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // so that the tile borders will be continuous. 1997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fBaseFrequency.fX) { 2007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar lowFrequencx = SkScalarDiv( 2017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMulFloor(tileWidth, fBaseFrequency.fX), tileWidth); 2027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar highFrequencx = SkScalarDiv( 2037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMulCeil(tileWidth, fBaseFrequency.fX), tileWidth); 2047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // BaseFrequency should be non-negative according to the standard. 2057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (SkScalarDiv(fBaseFrequency.fX, lowFrequencx) < 2067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarDiv(highFrequencx, fBaseFrequency.fX)) { 2077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fBaseFrequency.fX = lowFrequencx; 2087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } else { 2097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fBaseFrequency.fX = highFrequencx; 2107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 2117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 2127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fBaseFrequency.fY) { 2137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar lowFrequency = SkScalarDiv( 2147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMulFloor(tileHeight, fBaseFrequency.fY), tileHeight); 2157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar highFrequency = SkScalarDiv( 2167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMulCeil(tileHeight, fBaseFrequency.fY), tileHeight); 2177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (SkScalarDiv(fBaseFrequency.fY, lowFrequency) < 2187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarDiv(highFrequency, fBaseFrequency.fY)) { 2197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fBaseFrequency.fY = lowFrequency; 2207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } else { 2217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fBaseFrequency.fY = highFrequency; 2227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 2237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 2247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Set up TurbulenceInitial stitch values. 2257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fStitchDataInit.fWidth = 2267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMulRound(tileWidth, fBaseFrequency.fX); 2277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fStitchDataInit.fWrapX = kPerlinNoise + fStitchDataInit.fWidth; 2287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fStitchDataInit.fHeight = 2297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMulRound(tileHeight, fBaseFrequency.fY); 2307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fStitchDataInit.fWrapY = kPerlinNoise + fStitchDataInit.fHeight; 2317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 2327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 2337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkBitmap* getPermutationsBitmap() 2347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 2357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (!fPermutationsBitmap) { 2367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPermutationsBitmap = SkNEW(SkBitmap); 2377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPermutationsBitmap->setConfig(SkBitmap::kA8_Config, kBlockSize, 1); 2387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPermutationsBitmap->allocPixels(); 2397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uint8_t* bitmapPixels = fPermutationsBitmap->getAddr8(0, 0); 2407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger memcpy(bitmapPixels, fLatticeSelector, sizeof(uint8_t) * kBlockSize); 2417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 2427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return fPermutationsBitmap; 2437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 2447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 2457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkBitmap* getNoiseBitmap() 2467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 2477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (!fNoiseBitmap) { 2487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoiseBitmap = SkNEW(SkBitmap); 2497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoiseBitmap->setConfig(SkBitmap::kARGB_8888_Config, kBlockSize, 4); 2507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoiseBitmap->allocPixels(); 2517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uint32_t* bitmapPixels = fNoiseBitmap->getAddr32(0, 0); 2527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger memcpy(bitmapPixels, fNoise[0][0], sizeof(uint16_t) * kBlockSize * 4 * 2); 2537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 2547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return fNoiseBitmap; 2557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 2567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger}; 2577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 2587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerSkShader* SkPerlinNoiseShader::CreateFractalNoise(SkScalar baseFrequencyX, SkScalar baseFrequencyY, 2597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int numOctaves, SkScalar seed, 2607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkISize* tileSize) { 2617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return SkNEW_ARGS(SkPerlinNoiseShader, (kFractalNoise_Type, baseFrequencyX, baseFrequencyY, 2627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger numOctaves, seed, tileSize)); 2637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 2647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 2657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerSkShader* SkPerlinNoiseShader::CreateTubulence(SkScalar baseFrequencyX, SkScalar baseFrequencyY, 2667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int numOctaves, SkScalar seed, 2677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkISize* tileSize) { 2687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return SkNEW_ARGS(SkPerlinNoiseShader, (kTurbulence_Type, baseFrequencyX, baseFrequencyY, 2697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger numOctaves, seed, tileSize)); 2707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 2717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 2727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerSkPerlinNoiseShader::SkPerlinNoiseShader(SkPerlinNoiseShader::Type type, 2737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar baseFrequencyX, 2747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar baseFrequencyY, 2757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int numOctaves, 2767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar seed, 2777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkISize* tileSize) 2787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger : fType(type) 2797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fBaseFrequencyX(baseFrequencyX) 2807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fBaseFrequencyY(baseFrequencyY) 2817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fNumOctaves(numOctaves & 0xFF /*[0,255] octaves allowed*/) 2827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fSeed(seed) 2837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fStitchTiles((tileSize != NULL) && !tileSize->isEmpty()) 2847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fPaintingData(NULL) 2857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger{ 2867839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkASSERT(numOctaves >= 0 && numOctaves < 256); 2877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger setTileSize(fStitchTiles ? *tileSize : SkISize::Make(0,0)); 2887839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fMatrix.reset(); 2897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 2907839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 2917839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerSkPerlinNoiseShader::SkPerlinNoiseShader(SkFlattenableReadBuffer& buffer) : 2927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger INHERITED(buffer), fPaintingData(NULL) { 2937839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fType = (SkPerlinNoiseShader::Type) buffer.readInt(); 2947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fBaseFrequencyX = buffer.readScalar(); 2957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fBaseFrequencyY = buffer.readScalar(); 2967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNumOctaves = buffer.readInt(); 2977839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fSeed = buffer.readScalar(); 2987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fStitchTiles = buffer.readBool(); 2997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fTileSize.fWidth = buffer.readInt(); 3007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fTileSize.fHeight = buffer.readInt(); 3017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger setTileSize(fTileSize); 3027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fMatrix.reset(); 3037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 3047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 3057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerSkPerlinNoiseShader::~SkPerlinNoiseShader() { 3067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Safety, should have been done in endContext() 3077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkDELETE(fPaintingData); 3087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 3097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 3107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid SkPerlinNoiseShader::flatten(SkFlattenableWriteBuffer& buffer) const { 3117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger this->INHERITED::flatten(buffer); 3127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger buffer.writeInt((int) fType); 3137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger buffer.writeScalar(fBaseFrequencyX); 3147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger buffer.writeScalar(fBaseFrequencyY); 3157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger buffer.writeInt(fNumOctaves); 3167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger buffer.writeScalar(fSeed); 3177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger buffer.writeBool(fStitchTiles); 3187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger buffer.writeInt(fTileSize.fWidth); 3197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger buffer.writeInt(fTileSize.fHeight); 3207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 3217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 3227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid SkPerlinNoiseShader::initPaint(PaintingData& paintingData) 3237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger{ 3247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger paintingData.init(fSeed); 3257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 3267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Set frequencies to original values 3277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger paintingData.fBaseFrequency.set(fBaseFrequencyX, fBaseFrequencyY); 3287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Adjust frequecies based on size if stitching is enabled 3297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fStitchTiles) { 3307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger paintingData.stitch(); 3317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 3327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 3337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 3347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid SkPerlinNoiseShader::setTileSize(const SkISize& tileSize) { 3357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fTileSize = tileSize; 3367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 3377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (NULL == fPaintingData) { 3387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPaintingData = SkNEW_ARGS(PaintingData, (fTileSize)); 3397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger initPaint(*fPaintingData); 3407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } else { 3417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Set Size 3427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPaintingData->fTileSize = fTileSize; 3437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Set frequencies to original values 3447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPaintingData->fBaseFrequency.set(fBaseFrequencyX, fBaseFrequencyY); 3457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Adjust frequecies based on size if stitching is enabled 3467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fStitchTiles) { 3477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPaintingData->stitch(); 3487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 3497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 3507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 3517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 3527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerSkScalar SkPerlinNoiseShader::noise2D(int channel, const PaintingData& paintingData, 3537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const StitchData& stitchData, const SkPoint& noiseVector) 3547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger{ 3557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger struct Noise { 3567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int noisePositionIntegerValue; 3577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar noisePositionFractionValue; 3587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger Noise(SkScalar component) 3597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 3607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar position = component + kPerlinNoise; 3617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noisePositionIntegerValue = SkScalarFloorToInt(position); 3627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noisePositionFractionValue = position - SkIntToScalar(noisePositionIntegerValue); 3637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 3647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger }; 3657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger Noise noiseX(noiseVector.x()); 3667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger Noise noiseY(noiseVector.y()); 3677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar u, v; 3687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // If stitching, adjust lattice points accordingly. 3697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fStitchTiles) { 3707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseX.noisePositionIntegerValue = 3717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger checkNoise(noiseX.noisePositionIntegerValue, stitchData.fWrapX, stitchData.fWidth); 3727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseY.noisePositionIntegerValue = 3737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger checkNoise(noiseY.noisePositionIntegerValue, stitchData.fWrapY, stitchData.fHeight); 3747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 3757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseX.noisePositionIntegerValue &= kBlockMask; 3767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseY.noisePositionIntegerValue &= kBlockMask; 3777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int latticeIndex = 3787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger paintingData.fLatticeSelector[noiseX.noisePositionIntegerValue] + 3797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseY.noisePositionIntegerValue; 3807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int nextLatticeIndex = 3817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger paintingData.fLatticeSelector[(noiseX.noisePositionIntegerValue + 1) & kBlockMask] + 3827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseY.noisePositionIntegerValue; 3837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar sx = smoothCurve(noiseX.noisePositionFractionValue); 3847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar sy = smoothCurve(noiseY.noisePositionFractionValue); 3857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // This is taken 1:1 from SVG spec: http://www.w3.org/TR/SVG11/filters.html#feTurbulenceElement 3867839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPoint fractionValue = SkPoint::Make(noiseX.noisePositionFractionValue, 3877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseY.noisePositionFractionValue); // Offset (0,0) 3887839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger u = paintingData.fGradient[channel][latticeIndex & kBlockMask].dot(fractionValue); 3897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fractionValue.fX -= SK_Scalar1; // Offset (-1,0) 3907839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger v = paintingData.fGradient[channel][nextLatticeIndex & kBlockMask].dot(fractionValue); 3917839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar a = SkScalarInterp(u, v, sx); 3927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fractionValue.fY -= SK_Scalar1; // Offset (-1,-1) 3937839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger v = paintingData.fGradient[channel][(nextLatticeIndex + 1) & kBlockMask].dot(fractionValue); 3947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fractionValue.fX = noiseX.noisePositionFractionValue; // Offset (0,-1) 3957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger u = paintingData.fGradient[channel][(latticeIndex + 1) & kBlockMask].dot(fractionValue); 3967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar b = SkScalarInterp(u, v, sx); 3977839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return SkScalarInterp(a, b, sy); 3987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 3997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerSkScalar SkPerlinNoiseShader::calculateTurbulenceValueForPoint( 4017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int channel, const PaintingData& paintingData, StitchData& stitchData, const SkPoint& point) 4027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger{ 4037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fStitchTiles) { 4047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Set up TurbulenceInitial stitch values. 4057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchData = paintingData.fStitchDataInit; 4067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 4077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar turbulenceFunctionResult = 0; 4087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPoint noiseVector(SkPoint::Make(SkScalarMul(point.x(), paintingData.fBaseFrequency.fX), 4097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMul(point.y(), paintingData.fBaseFrequency.fY))); 4107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar ratio = SK_Scalar1; 4117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int octave = 0; octave < fNumOctaves; ++octave) { 4127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar noise = noise2D(channel, paintingData, stitchData, noiseVector); 4137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger turbulenceFunctionResult += SkScalarDiv( 4147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger (fType == kFractalNoise_Type) ? noise : SkScalarAbs(noise), ratio); 4157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseVector.fX *= 2; 4167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseVector.fY *= 2; 4177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger ratio *= 2; 4187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fStitchTiles) { 4197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Update stitch values 4207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchData.fWidth *= 2; 4217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchData.fWrapX = stitchData.fWidth + kPerlinNoise; 4227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchData.fHeight *= 2; 4237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchData.fWrapY = stitchData.fHeight + kPerlinNoise; 4247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 4257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 4267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // The value of turbulenceFunctionResult comes from ((turbulenceFunctionResult) + 1) / 2 4287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // by fractalNoise and (turbulenceFunctionResult) by turbulence. 4297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fType == kFractalNoise_Type) { 4307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger turbulenceFunctionResult = 4317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarMul(turbulenceFunctionResult, SK_ScalarHalf) + SK_ScalarHalf; 4327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 4337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (channel == 3) { // Scale alpha by paint value 4357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger turbulenceFunctionResult = SkScalarMul(turbulenceFunctionResult, 4367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalarDiv(SkIntToScalar(getPaintAlpha()), SkIntToScalar(255))); 4377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 4387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Clamp result 4407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return SkScalarPin(turbulenceFunctionResult, 0, SK_Scalar1); 4417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 4427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerSkPMColor SkPerlinNoiseShader::shade(const SkPoint& point, StitchData& stitchData) { 4447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkMatrix matrix = fMatrix; 4457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkMatrix invMatrix; 4467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (!matrix.invert(&invMatrix)) { 4477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger invMatrix.reset(); 4487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } else { 4497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger invMatrix.postConcat(invMatrix); // Square the matrix 4507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 4517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // This (1,1) translation is due to WebKit's 1 based coordinates for the noise 4527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // (as opposed to 0 based, usually). The same adjustment is in the setData() function. 4537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger matrix.postTranslate(SK_Scalar1, SK_Scalar1); 4547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPoint newPoint; 4557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger matrix.mapPoints(&newPoint, &point, 1); 4567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger invMatrix.mapPoints(&newPoint, &newPoint, 1); 4577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger newPoint.fX = SkScalarRoundToScalar(newPoint.fX); 4587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger newPoint.fY = SkScalarRoundToScalar(newPoint.fY); 4597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger U8CPU rgba[4]; 4617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int channel = 3; channel >= 0; --channel) { 4627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger rgba[channel] = SkScalarFloorToInt(255 * 4637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger calculateTurbulenceValueForPoint(channel, *fPaintingData, stitchData, newPoint)); 4647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 4657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return SkPreMultiplyARGB(rgba[3], rgba[0], rgba[1], rgba[2]); 4667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 4677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerbool SkPerlinNoiseShader::setContext(const SkBitmap& device, const SkPaint& paint, 4697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkMatrix& matrix) { 4707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fMatrix = matrix; 4717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return INHERITED::setContext(device, paint, matrix); 4727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 4737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid SkPerlinNoiseShader::shadeSpan(int x, int y, SkPMColor result[], int count) { 4757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPoint point = SkPoint::Make(SkIntToScalar(x), SkIntToScalar(y)); 4767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger StitchData stitchData; 4777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int i = 0; i < count; ++i) { 4787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger result[i] = shade(point, stitchData); 4797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger point.fX += SK_Scalar1; 4807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 4817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 4827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid SkPerlinNoiseShader::shadeSpan16(int x, int y, uint16_t result[], int count) { 4847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPoint point = SkPoint::Make(SkIntToScalar(x), SkIntToScalar(y)); 4857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger StitchData stitchData; 4867839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger DITHER_565_SCAN(y); 4877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger for (int i = 0; i < count; ++i) { 4887839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger unsigned dither = DITHER_VALUE(x); 4897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger result[i] = SkDitherRGB32To565(shade(point, stitchData), dither); 4907839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger DITHER_INC_X(x); 4917839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger point.fX += SK_Scalar1; 4927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 4937839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 4947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger///////////////////////////////////////////////////////////////////// 4967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 49758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger#if SK_SUPPORT_GPU 4987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 4997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#include "GrTBackendEffectFactory.h" 5007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerclass GrGLNoise : public GrGLEffect { 5027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerpublic: 5037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLNoise(const GrBackendEffectFactory& factory, 5047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrDrawEffect& drawEffect); 5057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual ~GrGLNoise() {} 5067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static inline EffectKey GenKey(const GrDrawEffect&, const GrGLCaps&); 5087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE; 5107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerprotected: 5127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPerlinNoiseShader::Type fType; 5137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger bool fStitchTiles; 5147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int fNumOctaves; 5157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLUniformManager::UniformHandle fBaseFrequencyUni; 5167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLUniformManager::UniformHandle fAlphaUni; 5177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLUniformManager::UniformHandle fInvMatrixUni; 5187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLEffectMatrix fEffectMatrix; 5197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerprivate: 5217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger typedef GrGLEffect INHERITED; 5227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger}; 5237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerclass GrGLPerlinNoise : public GrGLNoise { 5257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerpublic: 5267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLPerlinNoise(const GrBackendEffectFactory& factory, 5277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrDrawEffect& drawEffect) 5287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger : GrGLNoise(factory, drawEffect) {} 5297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual ~GrGLPerlinNoise() {} 5307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual void emitCode(GrGLShaderBuilder*, 5327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrDrawEffect&, 5337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger EffectKey, 5347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* outputColor, 5357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* inputColor, 5367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const TextureSamplerArray&) SK_OVERRIDE; 5377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE; 5397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerprivate: 5417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLUniformManager::UniformHandle fStitchDataUni; 5427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger typedef GrGLNoise INHERITED; 5447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger}; 5457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerclass GrGLSimplexNoise : public GrGLNoise { 5477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Note : This is for reference only. GrGLPerlinNoise is used for processing. 5487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerpublic: 5497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLSimplexNoise(const GrBackendEffectFactory& factory, 5507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrDrawEffect& drawEffect) 5517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger : GrGLNoise(factory, drawEffect) {} 5527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual ~GrGLSimplexNoise() {} 5547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual void emitCode(GrGLShaderBuilder*, 5567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrDrawEffect&, 5577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger EffectKey, 5587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* outputColor, 5597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* inputColor, 5607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const TextureSamplerArray&) SK_OVERRIDE; 5617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual void setData(const GrGLUniformManager&, const GrDrawEffect&) SK_OVERRIDE; 5637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerprivate: 5657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLUniformManager::UniformHandle fSeedUni; 5667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger typedef GrGLNoise INHERITED; 5687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger}; 5697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger///////////////////////////////////////////////////////////////////// 5717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerclass GrNoiseEffect : public GrEffect { 5737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerpublic: 5747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual ~GrNoiseEffect() { } 5757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPerlinNoiseShader::Type type() const { return fType; } 5777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger bool stitchTiles() const { return fStitchTiles; } 5787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkVector& baseFrequency() const { return fBaseFrequency; } 5797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int numOctaves() const { return fNumOctaves; } 5807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkMatrix& matrix() const { return fMatrix; } 5817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uint8_t alpha() const { return fAlpha; } 5827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLEffectMatrix::CoordsType coordsType() const { return GrEffect::kLocal_CoordsType; } 5837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger void getConstantColorComponents(GrColor*, uint32_t* validFlags) const SK_OVERRIDE { 5857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger *validFlags = 0; // This is noise. Nothing is constant. 5867839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 5877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5887839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerprotected: 5897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { 5907839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrNoiseEffect& s = CastEffect<GrNoiseEffect>(sBase); 5917839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return fType == s.fType && 5927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fBaseFrequency == s.fBaseFrequency && 5937839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNumOctaves == s.fNumOctaves && 5947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fStitchTiles == s.fStitchTiles && 5957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fMatrix == s.fMatrix && 5967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fAlpha == s.fAlpha; 5977839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 5987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 5997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrNoiseEffect(SkPerlinNoiseShader::Type type, const SkVector& baseFrequency, int numOctaves, 6007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger bool stitchTiles, const SkMatrix& matrix, uint8_t alpha) 6017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger : fType(type) 6027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fBaseFrequency(baseFrequency) 6037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fNumOctaves(numOctaves) 6047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fStitchTiles(stitchTiles) 6057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fMatrix(matrix) 6067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fAlpha(alpha) { 6077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 6087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPerlinNoiseShader::Type fType; 6107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkVector fBaseFrequency; 6117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int fNumOctaves; 6127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger bool fStitchTiles; 6137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkMatrix fMatrix; 6147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uint8_t fAlpha; 6157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerprivate: 6177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger typedef GrEffect INHERITED; 6187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger}; 6197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerclass GrPerlinNoiseEffect : public GrNoiseEffect { 6217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerpublic: 6227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static GrEffectRef* Create(SkPerlinNoiseShader::Type type, const SkVector& baseFrequency, 6237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int numOctaves, bool stitchTiles, 6247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkPerlinNoiseShader::StitchData& stitchData, 6257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrTexture* permutationsTexture, GrTexture* noiseTexture, 6267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkMatrix& matrix, uint8_t alpha) { 6277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger AutoEffectUnref effect(SkNEW_ARGS(GrPerlinNoiseEffect, (type, baseFrequency, numOctaves, 6287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchTiles, stitchData, permutationsTexture, noiseTexture, matrix, alpha))); 6297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return CreateEffectRef(effect); 6307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 6317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual ~GrPerlinNoiseEffect() { } 6337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static const char* Name() { return "PerlinNoise"; } 6357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE { 6367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return GrTBackendEffectFactory<GrPerlinNoiseEffect>::getInstance(); 6377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 6387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkPerlinNoiseShader::StitchData& stitchData() const { return fStitchData; } 6397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger typedef GrGLPerlinNoise GLEffect; 6417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerprivate: 6437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { 6447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrPerlinNoiseEffect& s = CastEffect<GrPerlinNoiseEffect>(sBase); 6457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return INHERITED::onIsEqual(sBase) && 6467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPermutationsAccess.getTexture() == s.fPermutationsAccess.getTexture() && 6477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNoiseAccess.getTexture() == s.fNoiseAccess.getTexture() && 6487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fStitchData == s.fStitchData; 6497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 6507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrPerlinNoiseEffect(SkPerlinNoiseShader::Type type, const SkVector& baseFrequency, 6527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int numOctaves, bool stitchTiles, 6537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkPerlinNoiseShader::StitchData& stitchData, 6547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrTexture* permutationsTexture, GrTexture* noiseTexture, 6557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkMatrix& matrix, uint8_t alpha) 6567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger : GrNoiseEffect(type, baseFrequency, numOctaves, stitchTiles, matrix, alpha) 6577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fPermutationsAccess(permutationsTexture) 6587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fNoiseAccess(noiseTexture) 6597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fStitchData(stitchData) { 6607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger this->addTextureAccess(&fPermutationsAccess); 6617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger this->addTextureAccess(&fNoiseAccess); 6627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 6637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GR_DECLARE_EFFECT_TEST; 6657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrTextureAccess fPermutationsAccess; 6677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrTextureAccess fNoiseAccess; 6687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPerlinNoiseShader::StitchData fStitchData; 6697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger typedef GrNoiseEffect INHERITED; 6717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger}; 6727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerclass GrSimplexNoiseEffect : public GrNoiseEffect { 6747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Note : This is for reference only. GrPerlinNoiseEffect is used for processing. 6757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerpublic: 6767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static GrEffectRef* Create(SkPerlinNoiseShader::Type type, const SkVector& baseFrequency, 6777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int numOctaves, bool stitchTiles, const SkScalar seed, 6787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkMatrix& matrix, uint8_t alpha) { 6797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger AutoEffectUnref effect(SkNEW_ARGS(GrSimplexNoiseEffect, (type, baseFrequency, numOctaves, 6807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchTiles, seed, matrix, alpha))); 6817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return CreateEffectRef(effect); 6827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 6837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual ~GrSimplexNoiseEffect() { } 6857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6867839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger static const char* Name() { return "SimplexNoise"; } 6877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual const GrBackendEffectFactory& getFactory() const SK_OVERRIDE { 6887839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return GrTBackendEffectFactory<GrSimplexNoiseEffect>::getInstance(); 6897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 6907839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkScalar& seed() const { return fSeed; } 6917839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger typedef GrGLSimplexNoise GLEffect; 6937839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 6947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergerprivate: 6957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger virtual bool onIsEqual(const GrEffect& sBase) const SK_OVERRIDE { 6967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrSimplexNoiseEffect& s = CastEffect<GrSimplexNoiseEffect>(sBase); 6977839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return INHERITED::onIsEqual(sBase) && fSeed == s.fSeed; 6987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 6997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrSimplexNoiseEffect(SkPerlinNoiseShader::Type type, const SkVector& baseFrequency, 7017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int numOctaves, bool stitchTiles, const SkScalar seed, 7027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkMatrix& matrix, uint8_t alpha) 7037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger : GrNoiseEffect(type, baseFrequency, numOctaves, stitchTiles, matrix, alpha) 7047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fSeed(seed) { 7057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 7067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar fSeed; 7087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger typedef GrNoiseEffect INHERITED; 7107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger}; 7117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger///////////////////////////////////////////////////////////////////// 7137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerGR_DEFINE_EFFECT_TEST(GrPerlinNoiseEffect); 7147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerGrEffectRef* GrPerlinNoiseEffect::TestCreate(SkMWCRandom* random, 7167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrContext* context, 7177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrDrawTargetCaps&, 7187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrTexture**) { 7197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger int numOctaves = random->nextRangeU(2, 10); 7207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger bool stitchTiles = random->nextBool(); 7217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar seed = SkIntToScalar(random->nextU()); 7227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkISize tileSize = SkISize::Make(random->nextRangeU(4, 4096), random->nextRangeU(4, 4096)); 7237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar baseFrequencyX = random->nextRangeScalar(SkFloatToScalar(0.01f), 7247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkFloatToScalar(0.99f)); 7257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkScalar baseFrequencyY = random->nextRangeScalar(SkFloatToScalar(0.01f), 7267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkFloatToScalar(0.99f)); 7277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkShader* shader = random->nextBool() ? 7297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPerlinNoiseShader::CreateFractalNoise(baseFrequencyX, baseFrequencyY, numOctaves, seed, 7307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchTiles ? &tileSize : NULL) : 7317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPerlinNoiseShader::CreateTubulence(baseFrequencyX, baseFrequencyY, numOctaves, seed, 7327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchTiles ? &tileSize : NULL); 7337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkPaint paint; 7357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrEffectRef* effect = shader->asNewEffect(context, paint); 7367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkDELETE(shader); 7387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return effect; 7407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 7417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger///////////////////////////////////////////////////////////////////// 7437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid GrGLSimplexNoise::emitCode(GrGLShaderBuilder* builder, 7457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrDrawEffect&, 7467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger EffectKey key, 7477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* outputColor, 7487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* inputColor, 7497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const TextureSamplerArray&) { 7507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger sk_ignore_unused_variable(inputColor); 7517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* vCoords; 7537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fEffectMatrix.emitCodeMakeFSCoords2D(builder, key, &vCoords); 7547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fSeedUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 7567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger kFloat_GrSLType, "seed"); 7577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* seedUni = builder->getUniformCStr(fSeedUni); 7587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fInvMatrixUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 7597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger kMat33f_GrSLType, "invMatrix"); 7607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* invMatrixUni = builder->getUniformCStr(fInvMatrixUni); 7617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fBaseFrequencyUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 7627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger kVec2f_GrSLType, "baseFrequency"); 7637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* baseFrequencyUni = builder->getUniformCStr(fBaseFrequencyUni); 7647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fAlphaUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 7657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger kFloat_GrSLType, "alpha"); 7667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* alphaUni = builder->getUniformCStr(fAlphaUni); 7677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Add vec3 modulo 289 function 76958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger static const GrGLShaderVar gVec3Args[] = { 7707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLShaderVar("x", kVec3f_GrSLType) 7717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger }; 7727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkString mod289_3_funcName; 7747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, kVec3f_GrSLType, 77558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "mod289", SK_ARRAY_COUNT(gVec3Args), gVec3Args, 7767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "const vec2 C = vec2(1.0 / 289.0, 289.0);\n" 7777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "return x - floor(x * C.xxx) * C.yyy;", &mod289_3_funcName); 7787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Add vec4 modulo 289 function 78058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger static const GrGLShaderVar gVec4Args[] = { 7817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLShaderVar("x", kVec4f_GrSLType) 7827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger }; 7837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkString mod289_4_funcName; 7857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, kVec4f_GrSLType, 78658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "mod289", SK_ARRAY_COUNT(gVec4Args), gVec4Args, 7877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "const vec2 C = vec2(1.0 / 289.0, 289.0);\n" 7887839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "return x - floor(x * C.xxxx) * C.yyyy;", &mod289_4_funcName); 7897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7907839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Add vec4 permute function 79158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger SkString permuteCode; 79258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger permuteCode.appendf("const vec2 C = vec2(34.0, 1.0);\n" 79358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "return %s(((x * C.xxxx) + C.yyyy) * x);", mod289_4_funcName.c_str()); 79458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger SkString permuteFuncName; 7957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, kVec4f_GrSLType, 79658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "permute", SK_ARRAY_COUNT(gVec4Args), gVec4Args, 79758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger permuteCode.c_str(), &permuteFuncName); 7987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 7997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Add vec4 taylorInvSqrt function 80058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger SkString taylorInvSqrtFuncName; 8017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, kVec4f_GrSLType, 80258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "taylorInvSqrt", SK_ARRAY_COUNT(gVec4Args), gVec4Args, 8037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "const vec2 C = vec2(-0.85373472095314, 1.79284291400159);\n" 80458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "return x * C.xxxx + C.yyyy;", &taylorInvSqrtFuncName); 8057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Add vec3 noise function 80758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger static const GrGLShaderVar gNoiseVec3Args[] = { 8087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrGLShaderVar("v", kVec3f_GrSLType) 8097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger }; 8107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 81158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger SkString noiseCode; 81258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.append( 8137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "const vec2 C = vec2(1.0/6.0, 1.0/3.0);\n" 8147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "const vec4 D = vec4(0.0, 0.5, 1.0, 2.0);\n" 8157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // First corner 8177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 i = floor(v + dot(v, C.yyy));\n" 8187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 x0 = v - i + dot(i, C.xxx);\n" 8197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Other corners 8217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 g = step(x0.yzx, x0.xyz);\n" 8227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 l = 1.0 - g;\n" 8237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 i1 = min(g.xyz, l.zxy);\n" 8247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 i2 = max(g.xyz, l.zxy);\n" 8257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 x1 = x0 - i1 + C.xxx;\n" 8277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 x2 = x0 - i2 + C.yyy;\n" // 2.0*C.x = 1/3 = C.y 8287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 x3 = x0 - D.yyy;\n" // -1.0+3.0*C.x = -0.5 = -D.y 8297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger ); 8307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 83158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf( 8327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Permutations 8337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "i = %s(i);\n" 8347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 p = %s(%s(%s(\n" 8357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger " i.z + vec4(0.0, i1.z, i2.z, 1.0)) +\n" 8367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger " i.y + vec4(0.0, i1.y, i2.y, 1.0)) +\n" 8377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger " i.x + vec4(0.0, i1.x, i2.x, 1.0));\n", 83858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger mod289_3_funcName.c_str(), permuteFuncName.c_str(), permuteFuncName.c_str(), 83958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger permuteFuncName.c_str()); 8407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 84158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.append( 8427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Gradients: 7x7 points over a square, mapped onto an octahedron. 8437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // The ring size 17*17 = 289 is close to a multiple of 49 (49*6 = 294) 8447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "float n_ = 0.142857142857;\n" // 1.0/7.0 8457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 ns = n_ * D.wyz - D.xzx;\n" 8467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 j = p - 49.0 * floor(p * ns.z * ns.z);\n" // mod(p,7*7) 8487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 x_ = floor(j * ns.z);\n" 8507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 y_ = floor(j - 7.0 * x_);" // mod(j,N) 8517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 x = x_ *ns.x + ns.yyyy;\n" 8537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 y = y_ *ns.x + ns.yyyy;\n" 8547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 h = 1.0 - abs(x) - abs(y);\n" 8557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 b0 = vec4(x.xy, y.xy);\n" 8577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 b1 = vec4(x.zw, y.zw);\n" 8587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger ); 8597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 86058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.append( 8617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 s0 = floor(b0) * 2.0 + 1.0;\n" 8627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 s1 = floor(b1) * 2.0 + 1.0;\n" 8637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 sh = -step(h, vec4(0.0));\n" 8647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 a0 = b0.xzyw + s0.xzyw * sh.xxyy;\n" 8667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 a1 = b1.xzyw + s1.xzyw * sh.zzww;\n" 8677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 p0 = vec3(a0.xy, h.x);\n" 8697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 p1 = vec3(a0.zw, h.y);\n" 8707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 p2 = vec3(a1.xy, h.z);\n" 8717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec3 p3 = vec3(a1.zw, h.w);\n" 8727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger ); 8737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 87458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf( 8757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Normalise gradients 8767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 norm = %s(vec4(dot(p0,p0), dot(p1,p1), dot(p2, p2), dot(p3,p3)));\n" 8777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "p0 *= norm.x;\n" 8787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "p1 *= norm.y;\n" 8797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "p2 *= norm.z;\n" 8807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "p3 *= norm.w;\n" 8817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Mix final noise value 8837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "vec4 m = max(0.6 - vec4(dot(x0,x0), dot(x1,x1), dot(x2,x2), dot(x3,x3)), 0.0);\n" 8847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "m = m * m;\n" 8857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "return 42.0 * dot(m*m, vec4(dot(p0,x0), dot(p1,x1), dot(p2,x2), dot(p3,x3)));", 88658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger taylorInvSqrtFuncName.c_str()); 8877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 88858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger SkString noiseFuncName; 8897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, kFloat_GrSLType, 89058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "snoise", SK_ARRAY_COUNT(gNoiseVec3Args), gNoiseVec3Args, 89158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.c_str(), &noiseFuncName); 8927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 8937839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* noiseVecIni = "noiseVecIni"; 8947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* factors = "factors"; 8957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* sum = "sum"; 8967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* xOffsets = "xOffsets"; 8977839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* yOffsets = "yOffsets"; 8987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* channel = "channel"; 8997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Fill with some prime numbers 9017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\tconst vec4 %s = vec4(13.0, 53.0, 101.0, 151.0);\n", xOffsets); 9027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\tconst vec4 %s = vec4(109.0, 167.0, 23.0, 67.0);\n", yOffsets); 9037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // There are rounding errors if the floor operation is not performed here 9057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf( 9067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "\t\tvec3 %s = vec3(floor((%s*vec3(%s, 1.0)).xy) * vec2(0.66) * %s, 0.0);\n", 9077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger noiseVecIni, invMatrixUni, vCoords, baseFrequencyUni); 9087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Perturb the texcoords with three components of noise 9107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t%s += 0.1 * vec3(%s(%s + vec3( 0.0, 0.0, %s))," 9117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "%s(%s + vec3( 43.0, 17.0, %s))," 9127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "%s(%s + vec3(-17.0, -43.0, %s)));\n", 91358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseVecIni, noiseFuncName.c_str(), noiseVecIni, seedUni, 91458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), noiseVecIni, seedUni, 91558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), noiseVecIni, seedUni); 9167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t%s = vec4(0.0);\n", outputColor); 9187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\tvec3 %s = vec3(1.0);\n", factors); 9207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\tfloat %s = 0.0;\n", sum); 9217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Loop over all octaves 9237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\tfor (int octave = 0; octave < %d; ++octave) {\n", fNumOctaves); 9247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Loop over the 4 channels 9267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t\tfor (int %s = 3; %s >= 0; --%s) {\n", channel, channel, channel); 9277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf( 9297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger "\t\t\t\t%s[channel] += %s.x * %s(%s * %s.yyy - vec3(%s[%s], %s[%s], %s * %s.z));\n", 93058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger outputColor, factors, noiseFuncName.c_str(), noiseVecIni, factors, xOffsets, channel, 9317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger yOffsets, channel, seedUni, factors); 9327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppend("\t\t\t}\n"); // end of the for loop on channels 9347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t\t%s += %s.x;\n", sum, factors); 9367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t\t%s *= vec3(0.5, 2.0, 0.75);\n", factors); 9377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppend("\t\t}\n"); // end of the for loop on octaves 9397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fType == SkPerlinNoiseShader::kFractalNoise_Type) { 9417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // The value of turbulenceFunctionResult comes from ((turbulenceFunctionResult) + 1) / 2 9427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // by fractalNoise and (turbulenceFunctionResult) by turbulence. 9437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t%s = %s * vec4(0.5 / %s) + vec4(0.5);\n", 9447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger outputColor, outputColor, sum); 9457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } else { 9467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t%s = abs(%s / vec4(%s));\n", 9477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger outputColor, outputColor, sum); 9487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 9497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t%s.a *= %s;\n", outputColor, alphaUni); 9517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Clamp values 9537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t%s = clamp(%s, 0.0, 1.0);\n", outputColor, outputColor); 9547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Pre-multiply the result 9567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger builder->fsCodeAppendf("\t\t%s = vec4(%s.rgb * %s.aaa, %s.a);\n", 9577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger outputColor, outputColor, outputColor, outputColor); 9587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 9597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid GrGLPerlinNoise::emitCode(GrGLShaderBuilder* builder, 9617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrDrawEffect&, 9627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger EffectKey key, 9637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* outputColor, 9647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* inputColor, 9657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const TextureSamplerArray& samplers) { 9667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger sk_ignore_unused_variable(inputColor); 9677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* vCoords; 9697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fEffectMatrix.emitCodeMakeFSCoords2D(builder, key, &vCoords); 9707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fInvMatrixUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 9727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger kMat33f_GrSLType, "invMatrix"); 9737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* invMatrixUni = builder->getUniformCStr(fInvMatrixUni); 9747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fBaseFrequencyUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 9757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger kVec2f_GrSLType, "baseFrequency"); 9767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* baseFrequencyUni = builder->getUniformCStr(fBaseFrequencyUni); 9777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fAlphaUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 9787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger kFloat_GrSLType, "alpha"); 9797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* alphaUni = builder->getUniformCStr(fAlphaUni); 9807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 9817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* stitchDataUni = NULL; 9827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fStitchTiles) { 9837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fStitchDataUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 98458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger kVec2f_GrSLType, "stitchData"); 9857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger stitchDataUni = builder->getUniformCStr(fStitchDataUni); 9867839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 9877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 98858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // There are 4 lines, so the center of each line is 1/8, 3/8, 5/8 and 7/8 98958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger const char* chanCoordR = "0.125"; 99058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger const char* chanCoordG = "0.375"; 99158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger const char* chanCoordB = "0.625"; 99258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger const char* chanCoordA = "0.875"; 99358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger const char* chanCoord = "chanCoord"; 9947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* stitchData = "stitchData"; 9957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* ratio = "ratio"; 9967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* noiseXY = "noiseXY"; 9977839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* noiseVec = "noiseVec"; 9987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* noiseSmooth = "noiseSmooth"; 9997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* fractVal = "fractVal"; 10007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* uv = "uv"; 10017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* ab = "ab"; 10027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* latticeIdx = "latticeIdx"; 10037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* lattice = "lattice"; 10047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* inc8bit = "0.00390625"; // 1.0 / 256.0 10057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // This is the math to convert the two 16bit integer packed into rgba 8 bit input into a 10067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // [-1,1] vector and perform a dot product between that vector and the provided vector. 10077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const char* dotLattice = "dot(((%s.ga + %s.rb * vec2(%s)) * vec2(2.0) - vec2(1.0)), %s);"; 10087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 100958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // Add noise function 101058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger static const GrGLShaderVar gPerlinNoiseArgs[] = { 101158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger GrGLShaderVar(chanCoord, kFloat_GrSLType), 101258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger GrGLShaderVar(noiseVec, kVec2f_GrSLType) 101358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger }; 10147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 101558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger static const GrGLShaderVar gPerlinNoiseStitchArgs[] = { 101658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger GrGLShaderVar(chanCoord, kFloat_GrSLType), 101758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger GrGLShaderVar(noiseVec, kVec2f_GrSLType), 101858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger GrGLShaderVar(stitchData, kVec2f_GrSLType) 101958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger }; 10207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 102158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger SkString noiseCode; 10227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 102358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\tvec4 %s = vec4(floor(%s), fract(%s));", noiseXY, noiseVec, noiseVec); 10247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 10257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // smooth curve : t * t * (3 - 2 * t) 102658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\tvec2 %s = %s.zw * %s.zw * (vec2(3.0) - vec2(2.0) * %s.zw);", 102758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseSmooth, noiseXY, noiseXY, noiseXY); 10287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 10297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Adjust frequencies if we're stitching tiles 10307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fStitchTiles) { 103158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\tif(%s.x >= %s.x) { %s.x -= %s.x; }", 103258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseXY, stitchData, noiseXY, stitchData); 103358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\tif(%s.x >= (%s.x - 1.0)) { %s.x -= (%s.x - 1.0); }", 103458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseXY, stitchData, noiseXY, stitchData); 103558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\tif(%s.y >= %s.y) { %s.y -= %s.y; }", 103658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseXY, stitchData, noiseXY, stitchData); 103758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\tif(%s.y >= (%s.y - 1.0)) { %s.y -= (%s.y - 1.0); }", 103858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseXY, stitchData, noiseXY, stitchData); 10397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 10407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 10417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Get texture coordinates and normalize 104258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\t%s.xy = fract(floor(mod(%s.xy, 256.0)) / vec2(256.0));\n", 104358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseXY, noiseXY); 10447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 10457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Get permutation for x 10467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 10477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkString xCoords(""); 10487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger xCoords.appendf("vec2(%s.x, 0.5)", noiseXY); 10497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 105058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\tvec2 %s;\n\t%s.x = ", latticeIdx, latticeIdx); 105158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->appendTextureLookup(&noiseCode, samplers[0], xCoords.c_str(), kVec2f_GrSLType); 105258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.append(".r;"); 10537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 10547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 10557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Get permutation for x + 1 10567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 10577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkString xCoords(""); 10587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger xCoords.appendf("vec2(fract(%s.x + %s), 0.5)", noiseXY, inc8bit); 10597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 106058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\t%s.y = ", latticeIdx); 106158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->appendTextureLookup(&noiseCode, samplers[0], xCoords.c_str(), kVec2f_GrSLType); 106258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.append(".r;"); 10637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 10647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 106558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger#if defined(SK_BUILD_FOR_ANDROID) 106658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // Android rounding for Tegra devices, like, for example: Xoom (Tegra 2), Nexus 7 (Tegra 3). 106758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // The issue is that colors aren't accurate enough on Tegra devices. For example, if an 8 bit 106858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // value of 124 (or 0.486275 here) is entered, we can get a texture value of 123.513725 106958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // (or 0.484368 here). The following rounding operation prevents these precision issues from 107058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // affecting the result of the noise by making sure that we only have multiples of 1/255. 107158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // (Note that 1/255 is about 0.003921569, which is the value used here). 107258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\t%s = floor(%s * vec2(255.0) + vec2(0.5)) * vec2(0.003921569);", 107358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger latticeIdx, latticeIdx); 107458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger#endif 107558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger 10767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Get (x,y) coordinates with the permutated x 107758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\t%s = fract(%s + %s.yy);", latticeIdx, latticeIdx, noiseXY); 10787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 107958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\tvec2 %s = %s.zw;", fractVal, noiseXY); 10807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 108158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\n\tvec2 %s;", uv); 10827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Compute u, at offset (0,0) 10837839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 10847839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkString latticeCoords(""); 108558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger latticeCoords.appendf("vec2(%s.x, %s)", latticeIdx, chanCoord); 108658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\tvec4 %s = ", lattice); 108758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->appendTextureLookup(&noiseCode, samplers[1], latticeCoords.c_str(), 108858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger kVec2f_GrSLType); 108958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf(".bgra;\n\t%s.x = ", uv); 109058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf(dotLattice, lattice, lattice, inc8bit, fractVal); 10917839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 10927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 109358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\t%s.x -= 1.0;", fractVal); 10947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Compute v, at offset (-1,0) 10957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 10967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkString latticeCoords(""); 109758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger latticeCoords.appendf("vec2(%s.y, %s)", latticeIdx, chanCoord); 109858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.append("\n\tlattice = "); 109958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->appendTextureLookup(&noiseCode, samplers[1], latticeCoords.c_str(), 110058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger kVec2f_GrSLType); 110158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf(".bgra;\n\t%s.y = ", uv); 110258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf(dotLattice, lattice, lattice, inc8bit, fractVal); 11037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 11047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 11057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Compute 'a' as a linear interpolation of 'u' and 'v' 110658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\tvec2 %s;", ab); 110758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\t%s.x = mix(%s.x, %s.y, %s.x);", ab, uv, uv, noiseSmooth); 11087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 110958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\t%s.y -= 1.0;", fractVal); 11107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Compute v, at offset (-1,-1) 11117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 11127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkString latticeCoords(""); 111358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger latticeCoords.appendf("vec2(fract(%s.y + %s), %s)", latticeIdx, inc8bit, chanCoord); 111458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.append("\n\tlattice = "); 111558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->appendTextureLookup(&noiseCode, samplers[1], latticeCoords.c_str(), 111658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger kVec2f_GrSLType); 111758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf(".bgra;\n\t%s.y = ", uv); 111858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf(dotLattice, lattice, lattice, inc8bit, fractVal); 11197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 11207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 112158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\t%s.x += 1.0;", fractVal); 11227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Compute u, at offset (0,-1) 11237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger { 11247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkString latticeCoords(""); 112558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger latticeCoords.appendf("vec2(fract(%s.x + %s), %s)", latticeIdx, inc8bit, chanCoord); 112658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.append("\n\tlattice = "); 112758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->appendTextureLookup(&noiseCode, samplers[1], latticeCoords.c_str(), 112858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger kVec2f_GrSLType); 112958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf(".bgra;\n\t%s.x = ", uv); 113058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf(dotLattice, lattice, lattice, inc8bit, fractVal); 11317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 11327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 11337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Compute 'b' as a linear interpolation of 'u' and 'v' 113458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\t%s.y = mix(%s.x, %s.y, %s.x);", ab, uv, uv, noiseSmooth); 11357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Compute the noise as a linear interpolation of 'a' and 'b' 113658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseCode.appendf("\n\treturn mix(%s.x, %s.y, %s.y);\n", ab, ab, noiseSmooth); 113758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger 113858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger SkString noiseFuncName; 113958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger if (fStitchTiles) { 114058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, kFloat_GrSLType, 114158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "perlinnoise", SK_ARRAY_COUNT(gPerlinNoiseStitchArgs), 114258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger gPerlinNoiseStitchArgs, noiseCode.c_str(), &noiseFuncName); 114358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger } else { 114458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->emitFunction(GrGLShaderBuilder::kFragment_ShaderType, kFloat_GrSLType, 114558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "perlinnoise", SK_ARRAY_COUNT(gPerlinNoiseArgs), 114658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger gPerlinNoiseArgs, noiseCode.c_str(), &noiseFuncName); 114758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger } 11487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 114958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // There are rounding errors if the floor operation is not performed here 115058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\tvec2 %s = floor((%s * vec3(%s, 1.0)).xy) * %s;", 115158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseVec, invMatrixUni, vCoords, baseFrequencyUni); 11527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 115358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // Clear the color accumulator 115458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\t%s = vec4(0.0);", outputColor); 11557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 11567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fStitchTiles) { 115758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // Set up TurbulenceInitial stitch values. 115858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\tvec2 %s = %s;", stitchData, stitchDataUni); 11597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 11607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 116158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\tfloat %s = 1.0;", ratio); 116258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger 116358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger // Loop over all octaves 116458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\tfor (int octave = 0; octave < %d; ++octave) {", fNumOctaves); 116558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger 116658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\t\t%s += ", outputColor); 116758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger if (fType != SkPerlinNoiseShader::kFractalNoise_Type) { 116858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppend("abs("); 116958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger } 117058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger if (fStitchTiles) { 117158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf( 117258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "vec4(\n\t\t\t\t%s(%s, %s, %s),\n\t\t\t\t%s(%s, %s, %s)," 117358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "\n\t\t\t\t%s(%s, %s, %s),\n\t\t\t\t%s(%s, %s, %s))", 117458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), chanCoordR, noiseVec, stitchData, 117558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), chanCoordG, noiseVec, stitchData, 117658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), chanCoordB, noiseVec, stitchData, 117758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), chanCoordA, noiseVec, stitchData); 117858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger } else { 117958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf( 118058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "vec4(\n\t\t\t\t%s(%s, %s),\n\t\t\t\t%s(%s, %s)," 118158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger "\n\t\t\t\t%s(%s, %s),\n\t\t\t\t%s(%s, %s))", 118258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), chanCoordR, noiseVec, 118358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), chanCoordG, noiseVec, 118458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), chanCoordB, noiseVec, 118558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger noiseFuncName.c_str(), chanCoordA, noiseVec); 118658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger } 118758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger if (fType != SkPerlinNoiseShader::kFractalNoise_Type) { 118858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf(")"); // end of "abs(" 118958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger } 119058190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf(" * %s;", ratio); 119158190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger 119258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\t\t%s *= vec2(2.0);", noiseVec); 119358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\t\t%s *= 0.5;", ratio); 119458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger 119558190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger if (fStitchTiles) { 119658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\t\t%s *= vec2(2.0);", stitchData); 119758190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger } 119858190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppend("\n\t\t}"); // end of the for loop on octaves 11997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fType == SkPerlinNoiseShader::kFractalNoise_Type) { 12017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // The value of turbulenceFunctionResult comes from ((turbulenceFunctionResult) + 1) / 2 12027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // by fractalNoise and (turbulenceFunctionResult) by turbulence. 120358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\t%s = %s * vec4(0.5) + vec4(0.5);", outputColor, outputColor); 12047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 12057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 120658190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\t%s.a *= %s;", outputColor, alphaUni); 12077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Clamp values 120958190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\t%s = clamp(%s, 0.0, 1.0);", outputColor, outputColor); 12107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Pre-multiply the result 121258190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger builder->fsCodeAppendf("\n\t\t%s = vec4(%s.rgb * %s.aaa, %s.a);\n", 12137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger outputColor, outputColor, outputColor, outputColor); 12147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 12157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerGrGLNoise::GrGLNoise(const GrBackendEffectFactory& factory, const GrDrawEffect& drawEffect) 12177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger : INHERITED (factory) 12187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fType(drawEffect.castEffect<GrPerlinNoiseEffect>().type()) 12197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fStitchTiles(drawEffect.castEffect<GrPerlinNoiseEffect>().stitchTiles()) 12207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fNumOctaves(drawEffect.castEffect<GrPerlinNoiseEffect>().numOctaves()) 12217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger , fEffectMatrix(drawEffect.castEffect<GrPerlinNoiseEffect>().coordsType()) { 12227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 12237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerGrGLEffect::EffectKey GrGLNoise::GenKey(const GrDrawEffect& drawEffect, const GrGLCaps&) { 12257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrPerlinNoiseEffect& turbulence = drawEffect.castEffect<GrPerlinNoiseEffect>(); 12267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger EffectKey key = turbulence.numOctaves(); 12287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger key = key << 3; // Make room for next 3 bits 12307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger switch (turbulence.type()) { 12327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger case SkPerlinNoiseShader::kFractalNoise_Type: 12337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger key |= 0x1; 12347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger break; 12357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger case SkPerlinNoiseShader::kTurbulence_Type: 12367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger key |= 0x2; 12377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger break; 12387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger default: 12397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // leave key at 0 12407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger break; 12417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 12427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (turbulence.stitchTiles()) { 12447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger key |= 0x4; // Flip the 3rd bit if tile stitching is on 12457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 12467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger key = key << GrGLEffectMatrix::kKeyBits; 12487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkMatrix m = turbulence.matrix(); 12507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger m.postTranslate(SK_Scalar1, SK_Scalar1); 12517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return key | GrGLEffectMatrix::GenKey(m, drawEffect, 12527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger drawEffect.castEffect<GrPerlinNoiseEffect>().coordsType(), NULL); 12537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 12547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid GrGLNoise::setData(const GrGLUniformManager& uman, const GrDrawEffect& drawEffect) { 12567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrPerlinNoiseEffect& turbulence = drawEffect.castEffect<GrPerlinNoiseEffect>(); 12577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkVector& baseFrequency = turbulence.baseFrequency(); 12597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uman.set2f(fBaseFrequencyUni, baseFrequency.fX, baseFrequency.fY); 12607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uman.set1f(fAlphaUni, SkScalarDiv(SkIntToScalar(turbulence.alpha()), SkIntToScalar(255))); 12617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkMatrix m = turbulence.matrix(); 12637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkMatrix invM; 12647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (!m.invert(&invM)) { 12657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger invM.reset(); 12667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } else { 12677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger invM.postConcat(invM); // Square the matrix 12687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 12697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uman.setSkMatrix(fInvMatrixUni, invM); 12707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // This (1,1) translation is due to WebKit's 1 based coordinates for the noise 12727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // (as opposed to 0 based, usually). The same adjustment is in the shadeSpan() functions. 12737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger m.postTranslate(SK_Scalar1, SK_Scalar1); 12747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fEffectMatrix.setData(uman, m, drawEffect, NULL); 12757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 12767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid GrGLPerlinNoise::setData(const GrGLUniformManager& uman, const GrDrawEffect& drawEffect) { 12787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger INHERITED::setData(uman, drawEffect); 12797839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12807839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrPerlinNoiseEffect& turbulence = drawEffect.castEffect<GrPerlinNoiseEffect>(); 12817839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (turbulence.stitchTiles()) { 12827839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const SkPerlinNoiseShader::StitchData& stitchData = turbulence.stitchData(); 128358190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger uman.set2f(fStitchDataUni, SkIntToScalar(stitchData.fWidth), 128458190644c30e1c4aa8e527f3503c58f841e0fcf3Derek Sollenberger SkIntToScalar(stitchData.fHeight)); 12857839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 12867839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 12877839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12887839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid GrGLSimplexNoise::setData(const GrGLUniformManager& uman, const GrDrawEffect& drawEffect) { 12897839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger INHERITED::setData(uman, drawEffect); 12907839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12917839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger const GrSimplexNoiseEffect& turbulence = drawEffect.castEffect<GrSimplexNoiseEffect>(); 12927839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger uman.set1f(fSeedUni, turbulence.seed()); 12937839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 12947839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12957839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger///////////////////////////////////////////////////////////////////// 12967839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 12977839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerGrEffectRef* SkPerlinNoiseShader::asNewEffect(GrContext* context, const SkPaint& paint) const { 12987839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkASSERT(NULL != context); 12997839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13007839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Either we don't stitch tiles, either we have a valid tile size 13017839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkASSERT(!fStitchTiles || !fTileSize.isEmpty()); 13027839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13037839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#ifdef SK_USE_SIMPLEX_NOISE 13047839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Simplex noise is currently disabled but can be enabled by defining SK_USE_SIMPLEX_NOISE 13057839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger sk_ignore_unused_variable(context); 13067839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrEffectRef* effect = 13077839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrSimplexNoiseEffect::Create(fType, fPaintingData->fBaseFrequency, 13087839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNumOctaves, fStitchTiles, fSeed, 13097839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger this->getLocalMatrix(), paint.getAlpha()); 13107839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#else 13117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrTexture* permutationsTexture = GrLockAndRefCachedBitmapTexture( 13127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger context, *fPaintingData->getPermutationsBitmap(), NULL); 13137839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrTexture* noiseTexture = GrLockAndRefCachedBitmapTexture( 13147839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger context, *fPaintingData->getNoiseBitmap(), NULL); 13157839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13167839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrEffectRef* effect = (NULL != permutationsTexture) && (NULL != noiseTexture) ? 13177839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrPerlinNoiseEffect::Create(fType, fPaintingData->fBaseFrequency, 13187839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fNumOctaves, fStitchTiles, 13197839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger fPaintingData->fStitchDataInit, 13207839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger permutationsTexture, noiseTexture, 13217839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger this->getLocalMatrix(), paint.getAlpha()) : 13227839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger NULL; 13237839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13247839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // Unlock immediately, this is not great, but we don't have a way of 13257839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // knowing when else to unlock it currently. TODO: Remove this when 13267839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger // unref becomes the unlock replacement for all types of textures. 13277839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (NULL != permutationsTexture) { 13287839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrUnlockAndUnrefCachedBitmapTexture(permutationsTexture); 13297839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 13307839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (NULL != noiseTexture) { 13317839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger GrUnlockAndUnrefCachedBitmapTexture(noiseTexture); 13327839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 13337839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#endif 13347839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13357839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return effect; 13367839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 13377839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13387839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#else 13397839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13407839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek SollenbergerGrEffectRef* SkPerlinNoiseShader::asNewEffect(GrContext*, const SkPaint&) const { 13417839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger SkDEBUGFAIL("Should not call in GPU-less build"); 13427839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger return NULL; 13437839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 13447839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13457839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#endif 13467839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13477839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#ifdef SK_DEVELOPER 13487839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenbergervoid SkPerlinNoiseShader::toString(SkString* str) const { 13497839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append("SkPerlinNoiseShader: ("); 13507839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13517839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append("type: "); 13527839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger switch (fType) { 13537839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger case kFractalNoise_Type: 13547839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append("\"fractal noise\""); 13557839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger break; 13567839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger case kTurbulence_Type: 13577839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append("\"turbulence\""); 13587839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger break; 13597839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger default: 13607839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append("\"unknown\""); 13617839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger break; 13627839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger } 13637839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append(" base frequency: ("); 13647839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->appendScalar(fBaseFrequencyX); 13657839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append(", "); 13667839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->appendScalar(fBaseFrequencyY); 13677839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append(") number of octaves: "); 13687839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->appendS32(fNumOctaves); 13697839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append(" seed: "); 13707839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->appendScalar(fSeed); 13717839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append(" stitch tiles: "); 13727839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append(fStitchTiles ? "true " : "false "); 13737839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13747839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger this->INHERITED::toString(str); 13757839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger 13767839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger str->append(")"); 13777839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger} 13787839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger#endif 1379