SkMatrixConvolutionImageFilter.cpp revision f271cc7183fe48ac64d2d9a454eb013c91b42d53
19e49fb63d355446b91d20ff78ad78b297e89a50dcaryclark@google.com/* 29e49fb63d355446b91d20ff78ad78b297e89a50dcaryclark@google.com * Copyright 2012 The Android Open Source Project 39e49fb63d355446b91d20ff78ad78b297e89a50dcaryclark@google.com * 49e49fb63d355446b91d20ff78ad78b297e89a50dcaryclark@google.com * Use of this source code is governed by a BSD-style license that can be 59e49fb63d355446b91d20ff78ad78b297e89a50dcaryclark@google.com * found in the LICENSE file. 69e49fb63d355446b91d20ff78ad78b297e89a50dcaryclark@google.com */ 7d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com 8d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com#include "SkMatrixConvolutionImageFilter.h" 9198e054b33051a6cd5f606ccbc8d539cefc5631fcaryclark@google.com#include "SkBitmap.h" 10d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com#include "SkColorPriv.h" 11d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com#include "SkFlattenableBuffers.h" 12d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com#include "SkRect.h" 1378e17130f396d8b2157116c2504e357192f87ed1caryclark@google.com#include "SkUnPreMultiply.h" 1459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 1559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com#if SK_SUPPORT_GPU 1659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com#include "gl/GrGLProgramStage.h" 1759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com#endif 1859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 1959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comSkMatrixConvolutionImageFilter::SkMatrixConvolutionImageFilter(const SkISize& kernelSize, const SkScalar* kernel, SkScalar gain, SkScalar bias, const SkIPoint& target, TileMode tileMode, bool convolveAlpha, SkImageFilter* input) 2059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com : INHERITED(input), 2159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fKernelSize(kernelSize), 2259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fGain(gain), 2359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fBias(bias), 2459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fTarget(target), 2559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fTileMode(tileMode), 2659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fConvolveAlpha(convolveAlpha) { 2759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com uint32_t size = fKernelSize.fWidth * fKernelSize.fHeight; 2859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fKernel = SkNEW_ARRAY(SkScalar, size); 2959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com memcpy(fKernel, kernel, size * sizeof(SkScalar)); 3059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkASSERT(kernelSize.fWidth >= 1 && kernelSize.fHeight >= 1); 3159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkASSERT(target.fX >= 0 && target.fX < kernelSize.fWidth); 3259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkASSERT(target.fY >= 0 && target.fY < kernelSize.fHeight); 3359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com} 3459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 3559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comSkMatrixConvolutionImageFilter::SkMatrixConvolutionImageFilter(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { 3659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fKernelSize.fWidth = buffer.readInt(); 3759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fKernelSize.fHeight = buffer.readInt(); 3859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com uint32_t size = fKernelSize.fWidth * fKernelSize.fHeight; 3959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fKernel = SkNEW_ARRAY(SkScalar, size); 4059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com uint32_t readSize = buffer.readScalarArray(fKernel); 4159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkASSERT(readSize == size); 4259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fGain = buffer.readScalar(); 4359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fBias = buffer.readScalar(); 4459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fTarget.fX = buffer.readScalar(); 4559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fTarget.fY = buffer.readScalar(); 4659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fTileMode = (TileMode) buffer.readInt(); 4759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fConvolveAlpha = buffer.readBool(); 4859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com} 4959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 5059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comvoid SkMatrixConvolutionImageFilter::flatten(SkFlattenableWriteBuffer& buffer) const { 5159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com this->INHERITED::flatten(buffer); 5259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com buffer.writeInt(fKernelSize.fWidth); 5359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com buffer.writeInt(fKernelSize.fHeight); 5459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com buffer.writeScalarArray(fKernel, fKernelSize.fWidth * fKernelSize.fHeight); 5559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com buffer.writeScalar(fGain); 5659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com buffer.writeScalar(fBias); 5759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com buffer.writeScalar(fTarget.fX); 5859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com buffer.writeScalar(fTarget.fY); 5959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com buffer.writeInt((int) fTileMode); 6059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com buffer.writeBool(fConvolveAlpha); 6159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com} 6224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com 6324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.comSkMatrixConvolutionImageFilter::~SkMatrixConvolutionImageFilter() { 6459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com delete[] fKernel; 6559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com} 6659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 6759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comclass UncheckedPixelFetcher { 6859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.compublic: 69d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com static inline SkPMColor fetch(const SkBitmap& src, int x, int y) { 70d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com return *src.getAddr32(x, y); 71d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } 72d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com}; 7359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 74d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.comclass ClampPixelFetcher { 75d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.compublic: 76d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com static inline SkPMColor fetch(const SkBitmap& src, int x, int y) { 7724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com x = SkClampMax(x, src.width() - 1); 78d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com y = SkClampMax(y, src.height() - 1); 7959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com return *src.getAddr32(x, y); 8059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 8159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com}; 8259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 8359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comclass RepeatPixelFetcher { 8459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.compublic: 8559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com static inline SkPMColor fetch(const SkBitmap& src, int x, int y) { 8624bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com x %= src.width(); 87d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com y %= src.height(); 88d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com if (x < 0) { 89d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com x += src.width(); 90d6176b0dcacb124539e0cfd051e6d93a9782f020rmistry@google.com } 9159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com if (y < 0) { 9259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com y += src.height(); 93d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } 9459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com return *src.getAddr32(x, y); 95d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } 9659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com}; 97d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com 9859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comclass ClampToBlackPixelFetcher { 99d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.compublic: 10059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com static inline SkPMColor fetch(const SkBitmap& src, int x, int y) { 10124bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com if (x < 0 || x >= src.width() || y < 0 || y >= src.height()) { 102d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com return 0; 103d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } else { 104d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com return *src.getAddr32(x, y); 105d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } 106d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } 10778e17130f396d8b2157116c2504e357192f87ed1caryclark@google.com}; 10859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 10959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comtemplate<class PixelFetcher, bool convolveAlpha> 11059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comvoid SkMatrixConvolutionImageFilter::filterPixels(const SkBitmap& src, SkBitmap* result, const SkIRect& rect) { 11159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com for (int y = rect.fTop; y < rect.fBottom; ++y) { 11259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkPMColor* dptr = result->getAddr32(rect.fLeft, y); 11359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com for (int x = rect.fLeft; x < rect.fRight; ++x) { 11459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkScalar sumA = 0, sumR = 0, sumG = 0, sumB = 0; 11559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com for (int cy = 0; cy < fKernelSize.fHeight; cy++) { 11659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com for (int cx = 0; cx < fKernelSize.fWidth; cx++) { 11759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkPMColor s = PixelFetcher::fetch(src, x + cx - fTarget.fX, y + cy - fTarget.fY); 11859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkScalar k = fKernel[cy * fKernelSize.fWidth + cx]; 11959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com if (convolveAlpha) { 12059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com sumA += SkScalarMul(SkIntToScalar(SkGetPackedA32(s)), k); 12159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 12259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com sumR += SkScalarMul(SkIntToScalar(SkGetPackedR32(s)), k); 12359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com sumG += SkScalarMul(SkIntToScalar(SkGetPackedG32(s)), k); 12459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com sumB += SkScalarMul(SkIntToScalar(SkGetPackedB32(s)), k); 12559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 12659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 12759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com int a = convolveAlpha 12859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com ? SkClampMax(SkScalarFloorToInt(SkScalarMul(sumA, fGain) + fBias), 255) 12959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com : 255; 13059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com int r = SkClampMax(SkScalarFloorToInt(SkScalarMul(sumR, fGain) + fBias), a); 13159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com int g = SkClampMax(SkScalarFloorToInt(SkScalarMul(sumG, fGain) + fBias), a); 13259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com int b = SkClampMax(SkScalarFloorToInt(SkScalarMul(sumB, fGain) + fBias), a); 13359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com if (!convolveAlpha) { 13459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com a = SkGetPackedA32(PixelFetcher::fetch(src, x, y)); 13559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com *dptr++ = SkPreMultiplyARGB(a, r, g, b); 13659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } else { 13759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com *dptr++ = SkPackARGB32(a, r, g, b); 13859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 13959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 14059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 14159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com} 14259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 14359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comtemplate<class PixelFetcher> 14459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comvoid SkMatrixConvolutionImageFilter::filterPixels(const SkBitmap& src, SkBitmap* result, const SkIRect& rect) { 14559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com if (fConvolveAlpha) { 14659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com filterPixels<PixelFetcher, true>(src, result, rect); 14759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } else { 14859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com filterPixels<PixelFetcher, false>(src, result, rect); 14959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 15059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com} 15159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 15259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comvoid SkMatrixConvolutionImageFilter::filterInteriorPixels(const SkBitmap& src, SkBitmap* result, const SkIRect& rect) { 15324bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com filterPixels<UncheckedPixelFetcher>(src, result, rect); 15424bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com} 15559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 15659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comvoid SkMatrixConvolutionImageFilter::filterBorderPixels(const SkBitmap& src, SkBitmap* result, const SkIRect& rect) { 15759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com switch (fTileMode) { 15859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com case kClamp_TileMode: 15959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com filterPixels<ClampPixelFetcher>(src, result, rect); 160d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com break; 161d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com case kRepeat_TileMode: 162d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com filterPixels<RepeatPixelFetcher>(src, result, rect); 16359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com break; 164d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com case kClampToBlack_TileMode: 165d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com filterPixels<ClampToBlackPixelFetcher>(src, result, rect); 166d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com break; 16724bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com } 16859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com} 16959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 17059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com// FIXME: This should be refactored to SkSingleInputImageFilter for 17159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com// use by other filters. For now, we assume the input is always 17259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com// premultiplied and unpremultiply it 17359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comstatic SkBitmap unpremultiplyBitmap(const SkBitmap& src) 17459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com{ 17524bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkAutoLockPixels alp(src); 176d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com if (!src.getPixels()) { 177d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com return SkBitmap(); 178d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } 179d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com SkBitmap result; 180d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com result.setConfig(src.config(), src.width(), src.height()); 181d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com result.allocPixels(); 182d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com if (!result.getPixels()) { 183d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com return SkBitmap(); 184d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } 185d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com for (int y = 0; y < src.height(); ++y) { 186d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com const uint32_t* srcRow = src.getAddr32(0, y); 187d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com uint32_t* dstRow = result.getAddr32(0, y); 188d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com for (int x = 0; x < src.width(); ++x) { 189d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com dstRow[x] = SkUnPreMultiply::PMColorToColor(srcRow[x]); 190d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } 19159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 19259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com return result; 193d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com} 19459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 195d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.combool SkMatrixConvolutionImageFilter::onFilterImage(Proxy* proxy, 19659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com const SkBitmap& source, 197d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com const SkMatrix& matrix, 19859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkBitmap* result, 19924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkIPoint* loc) { 200d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com SkBitmap src = this->getInputResult(proxy, source, matrix, loc); 201d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com if (src.config() != SkBitmap::kARGB_8888_Config) { 202d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com return false; 203d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com } 20478e17130f396d8b2157116c2504e357192f87ed1caryclark@google.com 20559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com if (!fConvolveAlpha && !src.isOpaque()) { 20659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com src = unpremultiplyBitmap(src); 20759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 20859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 20959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkAutoLockPixels alp(src); 21059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com if (!src.getPixels()) { 21159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com return false; 21259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com } 21359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 21459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com result->setConfig(src.config(), src.width(), src.height()); 21559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com result->allocPixels(); 21659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 21759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkIRect interior = SkIRect::MakeXYWH(fTarget.fX, fTarget.fY, 21859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com src.width() - fKernelSize.fWidth + 1, 21959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com src.height() - fKernelSize.fHeight + 1); 22059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkIRect top = SkIRect::MakeWH(src.width(), fTarget.fY); 22159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkIRect bottom = SkIRect::MakeLTRB(0, interior.bottom(), 22259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com src.width(), src.height()); 22359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkIRect left = SkIRect::MakeXYWH(0, interior.top(), 22459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com fTarget.fX, interior.height()); 22559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkIRect right = SkIRect::MakeLTRB(interior.right(), interior.top(), 22659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com src.width(), interior.bottom()); 22759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com filterBorderPixels(src, result, top); 22859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com filterBorderPixels(src, result, left); 22959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com filterInteriorPixels(src, result, interior); 23059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com filterBorderPixels(src, result, right); 23159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com filterBorderPixels(src, result, bottom); 23259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com return true; 23359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com} 23459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 23559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com#if SK_SUPPORT_GPU 23659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 23759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com/////////////////////////////////////////////////////////////////////////////// 23859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 23959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comclass GrGLMatrixConvolutionEffect; 24059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 24159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comclass GrMatrixConvolutionEffect : public GrSingleTextureEffect { 24259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.compublic: 24359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com typedef SkMatrixConvolutionImageFilter::TileMode TileMode; 24459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com GrMatrixConvolutionEffect(GrTexture*, 24559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com const SkISize& kernelSize, 24659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com const SkScalar* kernel, 24759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkScalar gain, 24824bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com SkScalar bias, 24924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com const SkIPoint& target, 25059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com TileMode tileMode, 25159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com bool convolveAlpha); 25259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com virtual ~GrMatrixConvolutionEffect(); 25359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 25459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com static const char* Name() { return "MatrixConvolution"; } 255d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com const SkISize& kernelSize() const { return fKernelSize; } 256d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com const float* target() const { return fTarget; } 257d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com const float* kernel() const { return fKernel; } 25859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com float gain() const { return fGain; } 259d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com float bias() const { return fBias; } 260d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com TileMode tileMode() const { return fTileMode; } 261d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com bool convolveAlpha() const { return fConvolveAlpha; } 26224bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com 26359823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com typedef GrGLMatrixConvolutionEffect GLProgramStage; 26459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 26559823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com virtual const GrProgramStageFactory& getFactory() const SK_OVERRIDE; 26659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com virtual bool isEqual(const GrEffect&) const SK_OVERRIDE; 26759823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 26859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comprivate: 26959823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com SkISize fKernelSize; 27024bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com float *fKernel; 271d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com float fGain; 272d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com float fBias; 273d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com float fTarget[2]; 274d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com TileMode fTileMode; 275d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com bool fConvolveAlpha; 276d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com 277d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com GR_DECLARE_EFFECT_TEST; 278d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com 279d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com typedef GrSingleTextureEffect INHERITED; 28059823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com}; 28159823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com 28259823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.comclass GrGLMatrixConvolutionEffect : public GrGLLegacyProgramStage { 283d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.compublic: 28459823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com GrGLMatrixConvolutionEffect(const GrProgramStageFactory& factory, 285d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com const GrEffect& stage); 28659823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com virtual void setupVariables(GrGLShaderBuilder* builder) SK_OVERRIDE; 287d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com virtual void emitVS(GrGLShaderBuilder* state, 28859823f7f3ba43c7c6bc1fa8c600b093ecb4236aacaryclark@google.com const char* vertexCoords) SK_OVERRIDE {} 28924bec79d6f3d71ff97b50db72461a3892bd4f6b5caryclark@google.com virtual void emitFS(GrGLShaderBuilder* state, 290d88e0894d0156f4d427b812fec69bfba3eec7a8dcaryclark@google.com const char* outputColor, 291 const char* inputColor, 292 const TextureSamplerArray&) SK_OVERRIDE; 293 294 static inline StageKey GenKey(const GrEffect& s, const GrGLCaps& caps); 295 296 virtual void setData(const GrGLUniformManager&, const GrEffect&) SK_OVERRIDE; 297 298private: 299 typedef GrGLUniformManager::UniformHandle UniformHandle; 300 typedef SkMatrixConvolutionImageFilter::TileMode TileMode; 301 SkISize fKernelSize; 302 TileMode fTileMode; 303 bool fConvolveAlpha; 304 305 UniformHandle fKernelUni; 306 UniformHandle fImageIncrementUni; 307 UniformHandle fTargetUni; 308 UniformHandle fGainUni; 309 UniformHandle fBiasUni; 310 311 typedef GrGLLegacyProgramStage INHERITED; 312}; 313 314GrGLMatrixConvolutionEffect::GrGLMatrixConvolutionEffect(const GrProgramStageFactory& factory, 315 const GrEffect& stage) 316 : INHERITED(factory) 317 , fKernelUni(GrGLUniformManager::kInvalidUniformHandle) 318 , fImageIncrementUni(GrGLUniformManager::kInvalidUniformHandle) 319 , fTargetUni(GrGLUniformManager::kInvalidUniformHandle) 320 , fGainUni(GrGLUniformManager::kInvalidUniformHandle) 321 , fBiasUni(GrGLUniformManager::kInvalidUniformHandle) { 322 const GrMatrixConvolutionEffect& m = static_cast<const GrMatrixConvolutionEffect&>(stage); 323 fKernelSize = m.kernelSize(); 324 fTileMode = m.tileMode(); 325 fConvolveAlpha = m.convolveAlpha(); 326} 327 328void GrGLMatrixConvolutionEffect::setupVariables(GrGLShaderBuilder* builder) { 329 fImageIncrementUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 330 kVec2f_GrSLType, "ImageIncrement"); 331 fKernelUni = builder->addUniformArray(GrGLShaderBuilder::kFragment_ShaderType, 332 kFloat_GrSLType, "Kernel", fKernelSize.width() * fKernelSize.height()); 333 fTargetUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 334 kVec2f_GrSLType, "Target"); 335 fGainUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 336 kFloat_GrSLType, "Gain"); 337 fBiasUni = builder->addUniform(GrGLShaderBuilder::kFragment_ShaderType, 338 kFloat_GrSLType, "Bias"); 339} 340 341static void appendTextureLookup(GrGLShaderBuilder* builder, 342 const GrGLShaderBuilder::TextureSampler& sampler, 343 const char* coord, 344 SkMatrixConvolutionImageFilter::TileMode tileMode) { 345 SkString* code = &builder->fFSCode; 346 SkString clampedCoord; 347 switch (tileMode) { 348 case SkMatrixConvolutionImageFilter::kClamp_TileMode: 349 clampedCoord.printf("clamp(%s, 0.0, 1.0)", coord); 350 coord = clampedCoord.c_str(); 351 break; 352 case SkMatrixConvolutionImageFilter::kRepeat_TileMode: 353 clampedCoord.printf("fract(%s)", coord); 354 coord = clampedCoord.c_str(); 355 break; 356 case SkMatrixConvolutionImageFilter::kClampToBlack_TileMode: 357 code->appendf("clamp(%s, 0.0, 1.0) != %s ? vec4(0, 0, 0, 0) : ", coord, coord); 358 break; 359 } 360 builder->appendTextureLookup(code, sampler, coord); 361} 362 363void GrGLMatrixConvolutionEffect::emitFS(GrGLShaderBuilder* builder, 364 const char* outputColor, 365 const char* inputColor, 366 const TextureSamplerArray& samplers) { 367 SkString* code = &builder->fFSCode; 368 369 const char* target = builder->getUniformCStr(fTargetUni); 370 const char* imgInc = builder->getUniformCStr(fImageIncrementUni); 371 const char* kernel = builder->getUniformCStr(fKernelUni); 372 const char* gain = builder->getUniformCStr(fGainUni); 373 const char* bias = builder->getUniformCStr(fBiasUni); 374 int kWidth = fKernelSize.width(); 375 int kHeight = fKernelSize.height(); 376 377 code->appendf("\t\tvec4 sum = vec4(0, 0, 0, 0);\n"); 378 code->appendf("\t\tvec2 coord = %s - %s * %s;\n", 379 builder->defaultTexCoordsName(), target, imgInc); 380 code->appendf("\t\tfor (int y = 0; y < %d; y++) {\n", kHeight); 381 code->appendf("\t\t\tfor (int x = 0; x < %d; x++) {\n", kWidth); 382 code->appendf("\t\t\t\tfloat k = %s[y * %d + x];\n", kernel, kWidth); 383 code->appendf("\t\t\t\tvec2 coord2 = coord + vec2(x, y) * %s;\n", imgInc); 384 code->appendf("\t\t\t\tvec4 c = "); 385 appendTextureLookup(builder, samplers[0], "coord2", fTileMode); 386 code->appendf(";\n"); 387 if (!fConvolveAlpha) { 388 code->appendf("\t\t\t\tc.rgb /= c.a;\n"); 389 } 390 code->appendf("\t\t\t\tsum += c * k;\n"); 391 code->appendf("\t\t\t}\n"); 392 code->appendf("\t\t}\n"); 393 if (fConvolveAlpha) { 394 code->appendf("\t\t%s = sum * %s + %s;\n", outputColor, gain, bias); 395 code->appendf("\t\t%s.rgb = clamp(%s.rgb, 0.0, %s.a);\n", outputColor, outputColor, outputColor); 396 } else { 397 code->appendf("\t\tvec4 c = "); 398 appendTextureLookup(builder, samplers[0], builder->defaultTexCoordsName(), fTileMode); 399 code->appendf(";\n"); 400 code->appendf("\t\t%s.a = c.a;\n", outputColor); 401 code->appendf("\t\t%s.rgb = sum.rgb * %s + %s;\n", outputColor, gain, bias); 402 code->appendf("\t\t%s.rgb *= %s.a;\n", outputColor, outputColor); 403 } 404} 405 406namespace { 407 408int encodeXY(int x, int y) { 409 SkASSERT(x >= 1 && y >= 1 && x * y <= 32); 410 if (y < x) 411 return 0x40 | encodeXY(y, x); 412 else 413 return (0x40 >> x) | (y - x); 414} 415 416}; 417 418GrGLProgramStage::StageKey GrGLMatrixConvolutionEffect::GenKey(const GrEffect& s, 419 const GrGLCaps& caps) { 420 const GrMatrixConvolutionEffect& m = static_cast<const GrMatrixConvolutionEffect&>(s); 421 StageKey key = encodeXY(m.kernelSize().width(), m.kernelSize().height()); 422 key |= m.tileMode() << 7; 423 key |= m.convolveAlpha() ? 1 << 9 : 0; 424 return key; 425} 426 427void GrGLMatrixConvolutionEffect::setData(const GrGLUniformManager& uman, 428 const GrEffect& data) { 429 const GrMatrixConvolutionEffect& effect = 430 static_cast<const GrMatrixConvolutionEffect&>(data); 431 GrGLTexture& texture = 432 *static_cast<GrGLTexture*>(data.texture(0)); 433 // the code we generated was for a specific kernel size 434 GrAssert(effect.kernelSize() == fKernelSize); 435 GrAssert(effect.tileMode() == fTileMode); 436 float imageIncrement[2]; 437 imageIncrement[0] = 1.0f / texture.width(); 438 imageIncrement[1] = 1.0f / texture.height(); 439 uman.set2fv(fImageIncrementUni, 0, 1, imageIncrement); 440 uman.set2fv(fTargetUni, 0, 1, effect.target()); 441 uman.set1fv(fKernelUni, 0, fKernelSize.width() * fKernelSize.height(), effect.kernel()); 442 uman.set1f(fGainUni, effect.gain()); 443 uman.set1f(fBiasUni, effect.bias()); 444} 445 446GrMatrixConvolutionEffect::GrMatrixConvolutionEffect(GrTexture* texture, 447 const SkISize& kernelSize, 448 const SkScalar* kernel, 449 SkScalar gain, 450 SkScalar bias, 451 const SkIPoint& target, 452 TileMode tileMode, 453 bool convolveAlpha) 454 : INHERITED(texture), 455 fKernelSize(kernelSize), 456 fGain(SkScalarToFloat(gain)), 457 fBias(SkScalarToFloat(bias) / 255.0f), 458 fTileMode(tileMode), 459 fConvolveAlpha(convolveAlpha) { 460 fKernel = new float[kernelSize.width() * kernelSize.height()]; 461 for (int i = 0; i < kernelSize.width() * kernelSize.height(); i++) { 462 fKernel[i] = SkScalarToFloat(kernel[i]); 463 } 464 fTarget[0] = target.x(); 465 fTarget[1] = target.y(); 466} 467 468GrMatrixConvolutionEffect::~GrMatrixConvolutionEffect() { 469 delete[] fKernel; 470} 471 472const GrProgramStageFactory& GrMatrixConvolutionEffect::getFactory() const { 473 return GrTProgramStageFactory<GrMatrixConvolutionEffect>::getInstance(); 474} 475 476bool GrMatrixConvolutionEffect::isEqual(const GrEffect& sBase) const { 477 const GrMatrixConvolutionEffect& s = 478 static_cast<const GrMatrixConvolutionEffect&>(sBase); 479 return INHERITED::isEqual(sBase) && 480 fKernelSize == s.kernelSize() && 481 !memcmp(fKernel, s.kernel(), fKernelSize.width() * fKernelSize.height() * sizeof(float)) && 482 fGain == s.gain() && 483 fBias == s.bias() && 484 fTarget == s.target() && 485 fTileMode == s.tileMode() && 486 fConvolveAlpha == s.convolveAlpha(); 487} 488 489GR_DEFINE_EFFECT_TEST(GrMatrixConvolutionEffect); 490 491// A little bit less than the minimum # uniforms required by DX9SM2 (32). 492// Allows for a 5x5 kernel (or 25x1, for that matter). 493#define MAX_KERNEL_SIZE 25 494 495GrEffect* GrMatrixConvolutionEffect::TestCreate(SkRandom* random, 496 GrContext* context, 497 GrTexture* textures[]) { 498 int texIdx = random->nextBool() ? GrEffectUnitTest::kSkiaPMTextureIdx : 499 GrEffectUnitTest::kAlphaTextureIdx; 500 int width = random->nextRangeU(1, MAX_KERNEL_SIZE); 501 int height = random->nextRangeU(1, MAX_KERNEL_SIZE / width); 502 SkISize kernelSize = SkISize::Make(width, height); 503 SkScalar* kernel = new SkScalar[width * height]; 504 for (int i = 0; i < width * height; i++) { 505 kernel[i] = random->nextSScalar1(); 506 } 507 SkScalar gain = random->nextSScalar1(); 508 SkScalar bias = random->nextSScalar1(); 509 SkIPoint target = SkIPoint::Make(random->nextRangeU(0, kernelSize.width()), 510 random->nextRangeU(0, kernelSize.height())); 511 TileMode tileMode = static_cast<TileMode>(random->nextRangeU(0, 2)); 512 bool convolveAlpha = random->nextBool(); 513 return SkNEW_ARGS(GrMatrixConvolutionEffect, (textures[texIdx], 514 kernelSize, 515 kernel, 516 gain, 517 bias, 518 target, 519 tileMode, 520 convolveAlpha)); 521 522} 523 524bool SkMatrixConvolutionImageFilter::asNewCustomStage(GrEffect** stage, 525 GrTexture* texture) const { 526 bool ok = fKernelSize.width() * fKernelSize.height() <= MAX_KERNEL_SIZE; 527 if (ok && stage) { 528 *stage = SkNEW_ARGS(GrMatrixConvolutionEffect, (texture, 529 fKernelSize, 530 fKernel, 531 fGain, 532 fBias, 533 fTarget, 534 fTileMode, 535 fConvolveAlpha)); 536 } 537 return ok; 538} 539 540/////////////////////////////////////////////////////////////////////////////// 541 542#endif 543