180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/* 280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * Copyright 2006 The Android Open Source Project 380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * Use of this source code is governed by a BSD-style license that can be 580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * found in the LICENSE file. 680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru */ 780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "SkGradientShaderPriv.h" 980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "SkLinearGradient.h" 1080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "SkRadialGradient.h" 1180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "SkTwoPointRadialGradient.h" 1280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "SkTwoPointConicalGradient.h" 1380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "SkSweepGradient.h" 1480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 15779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek SollenbergerSkGradientShaderBase::SkGradientShaderBase(const Descriptor& desc) { 16779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkASSERT(desc.fCount > 1); 1780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 1880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCacheAlpha = 256; // init to a value that paint.getAlpha() can't return 1980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 20779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger fMapper = desc.fMapper; 21779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkSafeRef(fMapper); 22779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger fGradFlags = SkToU8(desc.fFlags); 2380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 24779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkASSERT((unsigned)desc.fTileMode < SkShader::kTileModeCount); 2580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gTileProcs)); 26779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger fTileMode = desc.fTileMode; 27779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger fTileProc = gTileProcs[desc.fTileMode]; 2880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 2980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache16 = fCache16Storage = NULL; 3080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32 = NULL; 3180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32PixelRef = NULL; 3280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 3380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru /* Note: we let the caller skip the first and/or last position. 3480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru i.e. pos[0] = 0.3, pos[1] = 0.7 3580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru In these cases, we insert dummy entries to ensure that the final data 3680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru will be bracketed by [0, 1]. 3780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru i.e. our_pos[0] = 0, our_pos[1] = 0.3, our_pos[2] = 0.7, our_pos[3] = 1 3880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 3980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Thus colorCount (the caller's value, and fColorCount (our value) may 4080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru differ by up to 2. In the above example: 4180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru colorCount = 2 4280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fColorCount = 4 4380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru */ 44779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger fColorCount = desc.fCount; 4580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // check if we need to add in dummy start and/or end position/colors 4680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru bool dummyFirst = false; 4780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru bool dummyLast = false; 48779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger if (desc.fPos) { 49779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger dummyFirst = desc.fPos[0] != 0; 50779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger dummyLast = desc.fPos[desc.fCount - 1] != SK_Scalar1; 5180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fColorCount += dummyFirst + dummyLast; 5280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 5380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 5480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorCount > kColorStorageCount) { 5580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru size_t size = sizeof(SkColor) + sizeof(Rec); 5680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fOrigColors = reinterpret_cast<SkColor*>( 5780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru sk_malloc_throw(size * fColorCount)); 5880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 5980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru else { 6080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fOrigColors = fStorage; 6180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 6280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 6380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // Now copy over the colors, adding the dummies as needed 6480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru { 6580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkColor* origColors = fOrigColors; 6680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (dummyFirst) { 67779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger *origColors++ = desc.fColors[0]; 6880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 69779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger memcpy(origColors, desc.fColors, desc.fCount * sizeof(SkColor)); 7080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (dummyLast) { 71779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger origColors += desc.fCount; 72779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger *origColors = desc.fColors[desc.fCount - 1]; 7380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 7480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 7580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 7680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fRecs = (Rec*)(fOrigColors + fColorCount); 7780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorCount > 2) { 7880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Rec* recs = fRecs; 7980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs->fPos = 0; 8080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // recs->fScale = 0; // unused; 8180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs += 1; 82779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger if (desc.fPos) { 8380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru /* We need to convert the user's array of relative positions into 8480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fixed-point positions and scale factors. We need these results 8580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru to be strictly monotonic (no two values equal or out of order). 8680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Hence this complex loop that just jams a zero for the scale 8780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru value if it sees a segment out of order, and it assures that 8880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru we start at 0 and end at 1.0 8980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru */ 9080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkFixed prev = 0; 9180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int startIndex = dummyFirst ? 0 : 1; 92779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger int count = desc.fCount + dummyLast; 9380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru for (int i = startIndex; i < count; i++) { 9480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // force the last value to be 1.0 9580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkFixed curr; 96779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger if (i == desc.fCount) { // we're really at the dummyLast 9780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru curr = SK_Fixed1; 9880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } else { 99779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger curr = SkScalarToFixed(desc.fPos[i]); 10080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 10180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // pin curr withing range 10280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (curr < 0) { 10380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru curr = 0; 10480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } else if (curr > SK_Fixed1) { 10580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru curr = SK_Fixed1; 10680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 10780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs->fPos = curr; 10880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (curr > prev) { 10980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs->fScale = (1 << 24) / (curr - prev); 11080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } else { 11180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs->fScale = 0; // ignore this segment 11280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 11380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // get ready for the next value 11480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru prev = curr; 11580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs += 1; 11680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 11780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } else { // assume even distribution 118779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkFixed dp = SK_Fixed1 / (desc.fCount - 1); 11980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkFixed p = dp; 120779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkFixed scale = (desc.fCount - 1) << 8; // (1 << 24) / dp 121779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger for (int i = 1; i < desc.fCount; i++) { 12280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs->fPos = p; 12380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs->fScale = scale; 12480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs += 1; 12580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru p += dp; 12680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 12780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 12880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 12980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru this->initCommon(); 13080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 13180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 132779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenbergerstatic uint32_t pack_mode_flags(SkShader::TileMode mode, uint32_t flags) { 133779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkASSERT(0 == (flags >> 28)); 134779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkASSERT(0 == ((uint32_t)mode >> 4)); 135779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger return (flags << 4) | mode; 136779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger} 137779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 138779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenbergerstatic SkShader::TileMode unpack_mode(uint32_t packed) { 139779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger return (SkShader::TileMode)(packed & 0xF); 140779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger} 141779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 142779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenbergerstatic uint32_t unpack_flags(uint32_t packed) { 143779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger return packed >> 4; 144779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger} 145779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 146779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek SollenbergerSkGradientShaderBase::SkGradientShaderBase(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { 14780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCacheAlpha = 256; 14880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 1490a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fMapper = buffer.readUnitMapper(); 15080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 15180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache16 = fCache16Storage = NULL; 15280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32 = NULL; 15380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32PixelRef = NULL; 15480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 15580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int colorCount = fColorCount = buffer.getArrayCount(); 15680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (colorCount > kColorStorageCount) { 15780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru size_t size = sizeof(SkColor) + sizeof(SkPMColor) + sizeof(Rec); 15880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fOrigColors = (SkColor*)sk_malloc_throw(size * colorCount); 15980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } else { 16080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fOrigColors = fStorage; 16180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 1620a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger buffer.readColorArray(fOrigColors, colorCount); 16380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 164779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger { 165779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t packed = buffer.readUInt(); 166779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger fGradFlags = SkToU8(unpack_flags(packed)); 167779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger fTileMode = unpack_mode(packed); 168779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger } 16980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fTileProc = gTileProcs[fTileMode]; 17080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fRecs = (Rec*)(fOrigColors + colorCount); 17180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (colorCount > 2) { 17280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Rec* recs = fRecs; 17380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs[0].fPos = 0; 17480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru for (int i = 1; i < colorCount; i++) { 17580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs[i].fPos = buffer.readInt(); 17680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru recs[i].fScale = buffer.readUInt(); 17780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 17880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 17980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru buffer.readMatrix(&fPtsToUnit); 18080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru this->initCommon(); 18180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 18280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 18380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruSkGradientShaderBase::~SkGradientShaderBase() { 18480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fCache16Storage) { 18580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru sk_free(fCache16Storage); 18680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 18780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkSafeUnref(fCache32PixelRef); 18880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fOrigColors != fStorage) { 18980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru sk_free(fOrigColors); 19080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 19180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkSafeUnref(fMapper); 19280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 19380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 19480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queruvoid SkGradientShaderBase::initCommon() { 19580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fFlags = 0; 19680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru unsigned colorAlpha = 0xFF; 19780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru for (int i = 0; i < fColorCount; i++) { 19880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru colorAlpha &= SkColorGetA(fOrigColors[i]); 19980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 20080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fColorsAreOpaque = colorAlpha == 0xFF; 20180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 20280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 20380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queruvoid SkGradientShaderBase::flatten(SkFlattenableWriteBuffer& buffer) const { 20480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru this->INHERITED::flatten(buffer); 20580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru buffer.writeFlattenable(fMapper); 20680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru buffer.writeColorArray(fOrigColors, fColorCount); 207779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger buffer.writeUInt(pack_mode_flags(fTileMode, fGradFlags)); 20880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorCount > 2) { 20980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Rec* recs = fRecs; 21080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru for (int i = 1; i < fColorCount; i++) { 21180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru buffer.writeInt(recs[i].fPos); 21280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru buffer.writeUInt(recs[i].fScale); 21380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 21480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 21580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru buffer.writeMatrix(fPtsToUnit); 21680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 21780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 21880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Querubool SkGradientShaderBase::isOpaque() const { 21980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return fColorsAreOpaque; 22080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 22180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 22280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Querubool SkGradientShaderBase::setContext(const SkBitmap& device, 22380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkPaint& paint, 22480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkMatrix& matrix) { 22580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (!this->INHERITED::setContext(device, paint, matrix)) { 22680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return false; 22780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 22880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 22980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkMatrix& inverse = this->getTotalInverse(); 23080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 23180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (!fDstToIndex.setConcat(fPtsToUnit, inverse)) { 232363e546ed626b6dbbc42f5db87b3594bc0b5944bDerek Sollenberger // need to keep our set/end context calls balanced. 233363e546ed626b6dbbc42f5db87b3594bc0b5944bDerek Sollenberger this->INHERITED::endContext(); 23480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return false; 23580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 23680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 23780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fDstToIndexProc = fDstToIndex.getMapXYProc(); 23880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fDstToIndexClass = (uint8_t)SkShader::ComputeMatrixClass(fDstToIndex); 23980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 24080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // now convert our colors in to PMColors 24180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru unsigned paintAlpha = this->getPaintAlpha(); 24280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 24380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fFlags = this->INHERITED::getFlags(); 24480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorsAreOpaque && paintAlpha == 0xFF) { 24580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fFlags |= kOpaqueAlpha_Flag; 24680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 24780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // we can do span16 as long as our individual colors are opaque, 24880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // regardless of the paint's alpha 24980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorsAreOpaque) { 25080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fFlags |= kHasSpan16_Flag; 25180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 25280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 25380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru this->setCacheAlpha(paintAlpha); 25480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return true; 25580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 25680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 25780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queruvoid SkGradientShaderBase::setCacheAlpha(U8CPU alpha) const { 25880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // if the new alpha differs from the previous time we were called, inval our cache 25980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // this will trigger the cache to be rebuilt. 26080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // we don't care about the first time, since the cache ptrs will already be NULL 26180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fCacheAlpha != alpha) { 26280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache16 = NULL; // inval the cache 26380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32 = NULL; // inval the cache 26480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCacheAlpha = alpha; // record the new alpha 26580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // inform our subclasses 26680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fCache32PixelRef) { 26780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32PixelRef->notifyPixelsChanged(); 26880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 26980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 27080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 27180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 27280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#define Fixed_To_Dot8(x) (((x) + 0x80) >> 8) 27380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 27480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/** We take the original colors, not our premultiplied PMColors, since we can 27580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru build a 16bit table as long as the original colors are opaque, even if the 27680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru paint specifies a non-opaque alpha. 27780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru*/ 27880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queruvoid SkGradientShaderBase::Build16bitCache(uint16_t cache[], SkColor c0, SkColor c1, 27980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int count) { 28080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkASSERT(count > 1); 28180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkASSERT(SkColorGetA(c0) == 0xFF); 28280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkASSERT(SkColorGetA(c1) == 0xFF); 28380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 28480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkFixed r = SkColorGetR(c0); 28580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkFixed g = SkColorGetG(c0); 28680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkFixed b = SkColorGetB(c0); 28780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 28880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkFixed dr = SkIntToFixed(SkColorGetR(c1) - r) / (count - 1); 28980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkFixed dg = SkIntToFixed(SkColorGetG(c1) - g) / (count - 1); 29080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkFixed db = SkIntToFixed(SkColorGetB(c1) - b) / (count - 1); 29180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 29280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru r = SkIntToFixed(r) + 0x8000; 29380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru g = SkIntToFixed(g) + 0x8000; 29480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru b = SkIntToFixed(b) + 0x8000; 29580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 29680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru do { 29780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru unsigned rr = r >> 16; 29880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru unsigned gg = g >> 16; 29980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru unsigned bb = b >> 16; 30080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru cache[0] = SkPackRGB16(SkR32ToR16(rr), SkG32ToG16(gg), SkB32ToB16(bb)); 30180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru cache[kCache16Count] = SkDitherPack888ToRGB16(rr, gg, bb); 30280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru cache += 1; 30380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru r += dr; 30480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru g += dg; 30580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru b += db; 30680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } while (--count != 0); 30780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 30880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 309779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger/* 310779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * r,g,b used to be SkFixed, but on gcc (4.2.1 mac and 4.6.3 goobuntu) in 311779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * release builds, we saw a compiler error where the 0xFF parameter in 312779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * SkPackARGB32() was being totally ignored whenever it was called with 313779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * a non-zero add (e.g. 0x8000). 314779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * 315779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * We found two work-arounds: 316779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * 1. change r,g,b to unsigned (or just one of them) 317779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * 2. change SkPackARGB32 to + its (a << SK_A32_SHIFT) value instead 318779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * of using | 319779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * 320779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * We chose #1 just because it was more localized. 321779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * See http://code.google.com/p/skia/issues/detail?id=1113 322779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * 323779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger * The type SkUFixed encapsulate this need for unsigned, but logically Fixed. 324779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger */ 325779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenbergertypedef uint32_t SkUFixed; 326779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 32780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queruvoid SkGradientShaderBase::Build32bitCache(SkPMColor cache[], SkColor c0, SkColor c1, 328779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger int count, U8CPU paintAlpha, uint32_t gradFlags) { 32980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkASSERT(count > 1); 33080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 33180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // need to apply paintAlpha to our two endpoints 332779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t a0 = SkMulDiv255Round(SkColorGetA(c0), paintAlpha); 333779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t a1 = SkMulDiv255Round(SkColorGetA(c1), paintAlpha); 33480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 335096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger 336779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger const bool interpInPremul = SkToBool(gradFlags & 337779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkGradientShader::kInterpolateColorsInPremul_Flag); 338779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 339779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t r0 = SkColorGetR(c0); 340779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t g0 = SkColorGetG(c0); 341779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t b0 = SkColorGetB(c0); 342779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 343779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t r1 = SkColorGetR(c1); 344779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t g1 = SkColorGetG(c1); 345779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t b1 = SkColorGetB(c1); 346779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 347779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger if (interpInPremul) { 348779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger r0 = SkMulDiv255Round(r0, a0); 349779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger g0 = SkMulDiv255Round(g0, a0); 350779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger b0 = SkMulDiv255Round(b0, a0); 351779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 352779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger r1 = SkMulDiv255Round(r1, a1); 353779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger g1 = SkMulDiv255Round(g1, a1); 354779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger b1 = SkMulDiv255Round(b1, a1); 355779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger } 356779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 357779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkFixed da = SkIntToFixed(a1 - a0) / (count - 1); 358779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkFixed dr = SkIntToFixed(r1 - r0) / (count - 1); 359779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkFixed dg = SkIntToFixed(g1 - g0) / (count - 1); 360779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkFixed db = SkIntToFixed(b1 - b0) / (count - 1); 36180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 362096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger /* We pre-add 1/8 to avoid having to add this to our [0] value each time 363096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger in the loop. Without this, the bias for each would be 364096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger 0x2000 0xA000 0xE000 0x6000 365096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger With this trick, we can add 0 for the first (no-op) and just adjust the 366096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger others. 367096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger */ 368779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkUFixed a = SkIntToFixed(a0) + 0x2000; 369779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkUFixed r = SkIntToFixed(r0) + 0x2000; 370779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkUFixed g = SkIntToFixed(g0) + 0x2000; 371779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkUFixed b = SkIntToFixed(b0) + 0x2000; 372096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger 373096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger /* 374096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * Our dither-cell (spatially) is 375096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * 0 2 376096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * 3 1 377096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * Where 378096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * [0] -> [-1/8 ... 1/8 ) values near 0 379096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * [1] -> [ 1/8 ... 3/8 ) values near 1/4 380096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * [2] -> [ 3/8 ... 5/8 ) values near 1/2 381096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * [3] -> [ 5/8 ... 7/8 ) values near 3/4 382096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger */ 38380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 384779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger if (0xFF == a0 && 0 == da) { 385096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger do { 386096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache[kCache32Count*0] = SkPackARGB32(0xFF, (r + 0 ) >> 16, 387096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (g + 0 ) >> 16, 388096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (b + 0 ) >> 16); 389096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache[kCache32Count*1] = SkPackARGB32(0xFF, (r + 0x8000) >> 16, 390096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (g + 0x8000) >> 16, 391096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (b + 0x8000) >> 16); 392096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache[kCache32Count*2] = SkPackARGB32(0xFF, (r + 0xC000) >> 16, 393096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (g + 0xC000) >> 16, 394096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (b + 0xC000) >> 16); 395096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache[kCache32Count*3] = SkPackARGB32(0xFF, (r + 0x4000) >> 16, 396096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (g + 0x4000) >> 16, 397096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (b + 0x4000) >> 16); 398096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache += 1; 399096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger r += dr; 400096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger g += dg; 401096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger b += db; 402096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger } while (--count != 0); 403779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger } else if (interpInPremul) { 404779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger do { 405779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger cache[kCache32Count*0] = SkPackARGB32((a + 0 ) >> 16, 406779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (r + 0 ) >> 16, 407779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (g + 0 ) >> 16, 408779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (b + 0 ) >> 16); 409779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger cache[kCache32Count*1] = SkPackARGB32((a + 0x8000) >> 16, 410779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (r + 0x8000) >> 16, 411779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (g + 0x8000) >> 16, 412779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (b + 0x8000) >> 16); 413779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger cache[kCache32Count*2] = SkPackARGB32((a + 0xC000) >> 16, 414779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (r + 0xC000) >> 16, 415779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (g + 0xC000) >> 16, 416779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (b + 0xC000) >> 16); 417779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger cache[kCache32Count*3] = SkPackARGB32((a + 0x4000) >> 16, 418779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (r + 0x4000) >> 16, 419779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (g + 0x4000) >> 16, 420779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (b + 0x4000) >> 16); 421779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger cache += 1; 422779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger a += da; 423779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger r += dr; 424779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger g += dg; 425779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger b += db; 426779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger } while (--count != 0); 427779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger } else { // interpolate in unpreml space 428096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger do { 429096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache[kCache32Count*0] = SkPremultiplyARGBInline((a + 0 ) >> 16, 430096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (r + 0 ) >> 16, 431096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (g + 0 ) >> 16, 432096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (b + 0 ) >> 16); 433096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache[kCache32Count*1] = SkPremultiplyARGBInline((a + 0x8000) >> 16, 434096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (r + 0x8000) >> 16, 435096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (g + 0x8000) >> 16, 436096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (b + 0x8000) >> 16); 437096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache[kCache32Count*2] = SkPremultiplyARGBInline((a + 0xC000) >> 16, 438096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (r + 0xC000) >> 16, 439096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (g + 0xC000) >> 16, 440096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (b + 0xC000) >> 16); 441096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache[kCache32Count*3] = SkPremultiplyARGBInline((a + 0x4000) >> 16, 442096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (r + 0x4000) >> 16, 443096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (g + 0x4000) >> 16, 444096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger (b + 0x4000) >> 16); 445096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger cache += 1; 446096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger a += da; 447096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger r += dr; 448096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger g += dg; 449096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger b += db; 450096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger } while (--count != 0); 451096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger } 45280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 45380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 45480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Querustatic inline int SkFixedToFFFF(SkFixed x) { 45580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkASSERT((unsigned)x <= SK_Fixed1); 45680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return x - (x >> 16); 45780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 45880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 45980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Querustatic inline U16CPU bitsTo16(unsigned x, const unsigned bits) { 46080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkASSERT(x < (1U << bits)); 46180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (6 == bits) { 46280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return (x << 10) | (x << 4) | (x >> 2); 46380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 46480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (8 == bits) { 46580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return (x << 8) | x; 46680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 46780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru sk_throw(); 46880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return 0; 46980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 47080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 47180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queruconst uint16_t* SkGradientShaderBase::getCache16() const { 47280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fCache16 == NULL) { 47380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // double the count for dither entries 47480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const int entryCount = kCache16Count * 2; 47580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const size_t allocSize = sizeof(uint16_t) * entryCount; 47680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 47780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fCache16Storage == NULL) { // set the storage and our working ptr 47880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache16Storage = (uint16_t*)sk_malloc_throw(allocSize); 47980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 48080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache16 = fCache16Storage; 48180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorCount == 2) { 48280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Build16bitCache(fCache16, fOrigColors[0], fOrigColors[1], 483d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger kCache16Count); 48480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } else { 48580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Rec* rec = fRecs; 48680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int prevIndex = 0; 48780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru for (int i = 1; i < fColorCount; i++) { 48880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache16Shift; 48980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkASSERT(nextIndex < kCache16Count); 49080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 49180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (nextIndex > prevIndex) 49280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Build16bitCache(fCache16 + prevIndex, fOrigColors[i-1], fOrigColors[i], nextIndex - prevIndex + 1); 49380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru prevIndex = nextIndex; 49480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 49580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 49680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 49780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fMapper) { 49880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache16Storage = (uint16_t*)sk_malloc_throw(allocSize); 49980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru uint16_t* linear = fCache16; // just computed linear data 50080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru uint16_t* mapped = fCache16Storage; // storage for mapped data 50180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkUnitMapper* map = fMapper; 502d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger for (int i = 0; i < kCache16Count; i++) { 50380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int index = map->mapUnit16(bitsTo16(i, kCache16Bits)) >> kCache16Shift; 50480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru mapped[i] = linear[index]; 50580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru mapped[i + kCache16Count] = linear[index + kCache16Count]; 50680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 50780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru sk_free(fCache16); 50880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache16 = fCache16Storage; 50980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 51080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 51180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return fCache16; 51280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 51380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 51480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queruconst SkPMColor* SkGradientShaderBase::getCache32() const { 51580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fCache32 == NULL) { 516910f694aefb0b671dd8522a9afe9b6be645701c1Derek Sollenberger SkImageInfo info; 517910f694aefb0b671dd8522a9afe9b6be645701c1Derek Sollenberger info.fWidth = kCache32Count; 518910f694aefb0b671dd8522a9afe9b6be645701c1Derek Sollenberger info.fHeight = 4; // for our 4 dither rows 519910f694aefb0b671dd8522a9afe9b6be645701c1Derek Sollenberger info.fAlphaType = kPremul_SkAlphaType; 520910f694aefb0b671dd8522a9afe9b6be645701c1Derek Sollenberger info.fColorType = kPMColor_SkColorType; 52180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 52280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (NULL == fCache32PixelRef) { 523910f694aefb0b671dd8522a9afe9b6be645701c1Derek Sollenberger fCache32PixelRef = SkMallocPixelRef::NewAllocate(info, 0, NULL); 52480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 52580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32 = (SkPMColor*)fCache32PixelRef->getAddr(); 52680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorCount == 2) { 52780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Build32bitCache(fCache32, fOrigColors[0], fOrigColors[1], 528779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger kCache32Count, fCacheAlpha, fGradFlags); 52980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } else { 53080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Rec* rec = fRecs; 53180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int prevIndex = 0; 53280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru for (int i = 1; i < fColorCount; i++) { 53380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache32Shift; 534d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger SkASSERT(nextIndex < kCache32Count); 53580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 53680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (nextIndex > prevIndex) 53780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru Build32bitCache(fCache32 + prevIndex, fOrigColors[i-1], 538779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger fOrigColors[i], nextIndex - prevIndex + 1, 539779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger fCacheAlpha, fGradFlags); 54080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru prevIndex = nextIndex; 54180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 54280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 54380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 54480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fMapper) { 545910f694aefb0b671dd8522a9afe9b6be645701c1Derek Sollenberger SkMallocPixelRef* newPR = SkMallocPixelRef::NewAllocate(info, 0, NULL); 54680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkPMColor* linear = fCache32; // just computed linear data 54780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkPMColor* mapped = (SkPMColor*)newPR->getAddr(); // storage for mapped data 54880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkUnitMapper* map = fMapper; 549d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger for (int i = 0; i < kCache32Count; i++) { 55080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int index = map->mapUnit16((i << 8) | i) >> 8; 551096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger mapped[i + kCache32Count*0] = linear[index + kCache32Count*0]; 552096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger mapped[i + kCache32Count*1] = linear[index + kCache32Count*1]; 553096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger mapped[i + kCache32Count*2] = linear[index + kCache32Count*2]; 554096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger mapped[i + kCache32Count*3] = linear[index + kCache32Count*3]; 55580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 55680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32PixelRef->unref(); 55780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32PixelRef = newPR; 55880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fCache32 = (SkPMColor*)newPR->getAddr(); 55980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 56080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 56180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return fCache32; 56280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 56380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 56480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/* 56580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * Because our caller might rebuild the same (logically the same) gradient 56680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * over and over, we'd like to return exactly the same "bitmap" if possible, 56780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * allowing the client to utilize a cache of our bitmap (e.g. with a GPU). 56880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * To do that, we maintain a private cache of built-bitmaps, based on our 56980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * colors and positions. Note: we don't try to flatten the fMapper, so if one 57080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * is present, we skip the cache for now. 57180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru */ 57280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queruvoid SkGradientShaderBase::getGradientTableBitmap(SkBitmap* bitmap) const { 57380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // our caller assumes no external alpha, so we ensure that our cache is 57480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // built with 0xFF 57580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru this->setCacheAlpha(0xFF); 57680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 57780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // don't have a way to put the mapper into our cache-key yet 57880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fMapper) { 57980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // force our cahce32pixelref to be built 58080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru (void)this->getCache32(); 581d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger bitmap->setConfig(SkBitmap::kARGB_8888_Config, kCache32Count, 1); 58280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru bitmap->setPixelRef(fCache32PixelRef); 58380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return; 58480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 58580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 586779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger // build our key: [numColors + colors[] + {positions[]} + flags ] 587779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger int count = 1 + fColorCount + 1; 58880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorCount > 2) { 58980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru count += fColorCount - 1; // fRecs[].fPos 59080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 59180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 59280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkAutoSTMalloc<16, int32_t> storage(count); 59380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int32_t* buffer = storage.get(); 59480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 59580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru *buffer++ = fColorCount; 59680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru memcpy(buffer, fOrigColors, fColorCount * sizeof(SkColor)); 59780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru buffer += fColorCount; 59880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorCount > 2) { 59980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru for (int i = 1; i < fColorCount; i++) { 60080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru *buffer++ = fRecs[i].fPos; 60180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 60280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 603779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger *buffer++ = fGradFlags; 60480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkASSERT(buffer - storage.get() == count); 60580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 60680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru /////////////////////////////////// 60780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 60880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SK_DECLARE_STATIC_MUTEX(gMutex); 60980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru static SkBitmapCache* gCache; 61080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // each cache cost 1K of RAM, since each bitmap will be 1x256 at 32bpp 61180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru static const int MAX_NUM_CACHED_GRADIENT_BITMAPS = 32; 61280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkAutoMutexAcquire ama(gMutex); 61380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 61480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (NULL == gCache) { 61580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru gCache = SkNEW_ARGS(SkBitmapCache, (MAX_NUM_CACHED_GRADIENT_BITMAPS)); 61680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 61780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru size_t size = count * sizeof(int32_t); 61880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 61980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (!gCache->find(storage.get(), size, bitmap)) { 62080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // force our cahce32pixelref to be built 62180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru (void)this->getCache32(); 622d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger bitmap->setConfig(SkBitmap::kARGB_8888_Config, kCache32Count, 1); 62380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru bitmap->setPixelRef(fCache32PixelRef); 62480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 62580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru gCache->add(storage.get(), size, *bitmap); 62680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 62780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 62880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 62980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queruvoid SkGradientShaderBase::commonAsAGradient(GradientInfo* info) const { 63080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (info) { 63180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (info->fColorCount >= fColorCount) { 63280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (info->fColors) { 633d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger memcpy(info->fColors, fOrigColors, fColorCount * sizeof(SkColor)); 63480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 63580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (info->fColorOffsets) { 63680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (fColorCount == 2) { 63780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru info->fColorOffsets[0] = 0; 63880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru info->fColorOffsets[1] = SK_Scalar1; 63980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } else if (fColorCount > 2) { 640d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger for (int i = 0; i < fColorCount; ++i) { 64180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru info->fColorOffsets[i] = SkFixedToScalar(fRecs[i].fPos); 642d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger } 64380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 64480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 64580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 64680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru info->fColorCount = fColorCount; 64780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru info->fTileMode = fTileMode; 648779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger info->fGradientFlags = fGradFlags; 64980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 65080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 65180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 652d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger#ifdef SK_DEVELOPER 653d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenbergervoid SkGradientShaderBase::toString(SkString* str) const { 654d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 655d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger str->appendf("%d colors: ", fColorCount); 656d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 657d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger for (int i = 0; i < fColorCount; ++i) { 658d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger str->appendHex(fOrigColors[i]); 659d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger if (i < fColorCount-1) { 660d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger str->append(", "); 661d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger } 662d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger } 663d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 664d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger if (fColorCount > 2) { 665d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger str->append(" points: ("); 666d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger for (int i = 0; i < fColorCount; ++i) { 667d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger str->appendScalar(SkFixedToScalar(fRecs[i].fPos)); 668d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger if (i < fColorCount-1) { 669d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger str->append(", "); 670d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger } 671d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger } 672d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger str->append(")"); 673d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger } 674d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 675d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger static const char* gTileModeName[SkShader::kTileModeCount] = { 676d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger "clamp", "repeat", "mirror" 677d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger }; 678d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 679d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger str->append(" "); 680d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger str->append(gTileModeName[fTileMode]); 681d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 682d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger // TODO: add "fMapper->toString(str);" when SkUnitMapper::toString is added 683d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 684d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger this->INHERITED::toString(str); 685d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger} 686d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger#endif 687d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 68880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/////////////////////////////////////////////////////////////////////////////// 68980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/////////////////////////////////////////////////////////////////////////////// 69080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 69180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "SkEmptyShader.h" 69280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 69380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru// assumes colors is SkColor* and pos is SkScalar* 69480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#define EXPAND_1_COLOR(count) \ 69580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkColor tmp[2]; \ 69680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru do { \ 69780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (1 == count) { \ 69880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru tmp[0] = tmp[1] = colors[0]; \ 69980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru colors = tmp; \ 70080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru pos = NULL; \ 70180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru count = 2; \ 70280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } \ 70380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } while (0) 70480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 705779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenbergerstatic void desc_init(SkGradientShaderBase::Descriptor* desc, 706779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger const SkColor colors[], 707779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger const SkScalar pos[], int colorCount, 708779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkShader::TileMode mode, 709779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkUnitMapper* mapper, uint32_t flags) { 710779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc->fColors = colors; 711779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc->fPos = pos; 712779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc->fCount = colorCount; 713779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc->fTileMode = mode; 714779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc->fMapper = mapper; 715779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc->fFlags = flags; 716779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger} 717779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger 71880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruSkShader* SkGradientShader::CreateLinear(const SkPoint pts[2], 71980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkColor colors[], 72080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkScalar pos[], int colorCount, 72180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkShader::TileMode mode, 722779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkUnitMapper* mapper, 723779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t flags) { 72480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (NULL == pts || NULL == colors || colorCount < 1) { 72580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return NULL; 72680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 72780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru EXPAND_1_COLOR(colorCount); 72880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 729779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkGradientShaderBase::Descriptor desc; 730779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 731779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger return SkNEW_ARGS(SkLinearGradient, (pts, desc)); 73280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 73380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 73480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruSkShader* SkGradientShader::CreateRadial(const SkPoint& center, SkScalar radius, 73580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkColor colors[], 73680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkScalar pos[], int colorCount, 73780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkShader::TileMode mode, 738779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkUnitMapper* mapper, 739779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t flags) { 74080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (radius <= 0 || NULL == colors || colorCount < 1) { 74180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return NULL; 74280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 74380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru EXPAND_1_COLOR(colorCount); 74480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 745779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkGradientShaderBase::Descriptor desc; 746779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 747779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger return SkNEW_ARGS(SkRadialGradient, (center, radius, desc)); 74880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 74980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 75080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruSkShader* SkGradientShader::CreateTwoPointRadial(const SkPoint& start, 75180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkScalar startRadius, 75280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkPoint& end, 75380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkScalar endRadius, 75480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkColor colors[], 75580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkScalar pos[], 75680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int colorCount, 75780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkShader::TileMode mode, 758779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkUnitMapper* mapper, 759779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t flags) { 76080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 76180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return NULL; 76280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 76380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru EXPAND_1_COLOR(colorCount); 76480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 765779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkGradientShaderBase::Descriptor desc; 766779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 76780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return SkNEW_ARGS(SkTwoPointRadialGradient, 768779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (start, startRadius, end, endRadius, desc)); 76980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 77080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 77180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruSkShader* SkGradientShader::CreateTwoPointConical(const SkPoint& start, 772779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkScalar startRadius, 773779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger const SkPoint& end, 774779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkScalar endRadius, 775779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger const SkColor colors[], 776779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger const SkScalar pos[], 777779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger int colorCount, 778779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkShader::TileMode mode, 779779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkUnitMapper* mapper, 780779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t flags) { 78180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 78280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return NULL; 78380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 78480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (start == end && startRadius == endRadius) { 78580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return SkNEW(SkEmptyShader); 78680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 78780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru EXPAND_1_COLOR(colorCount); 78880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 789779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkGradientShaderBase::Descriptor desc; 790779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 79180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return SkNEW_ARGS(SkTwoPointConicalGradient, 792779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger (start, startRadius, end, endRadius, desc)); 79380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 79480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 79580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruSkShader* SkGradientShader::CreateSweep(SkScalar cx, SkScalar cy, 79680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkColor colors[], 79780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkScalar pos[], 798779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger int colorCount, SkUnitMapper* mapper, 799779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger uint32_t flags) { 800779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger if (NULL == colors || colorCount < 1) { 80180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return NULL; 80280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 803779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger EXPAND_1_COLOR(colorCount); 80480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 805779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger SkGradientShaderBase::Descriptor desc; 806779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger desc_init(&desc, colors, pos, colorCount, SkShader::kClamp_TileMode, mapper, flags); 807779bf8a99dc7f03e5c43b26d4b85d7920ce89aeeDerek Sollenberger return SkNEW_ARGS(SkSweepGradient, (cx, cy, desc)); 80880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 80980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 81080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkGradientShader) 81180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkLinearGradient) 81280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkRadialGradient) 81380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSweepGradient) 81480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointRadialGradient) 81580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointConicalGradient) 81680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END 81780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 81880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/////////////////////////////////////////////////////////////////////////////// 81980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 82080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if SK_SUPPORT_GPU 82180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 82280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "effects/GrTextureStripAtlas.h" 823e2022cc36e47b9f0d219eb5cd24be61772c28d3bDerek Sollenberger#include "GrTBackendEffectFactory.h" 82480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "SkGr.h" 82580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 826363e546ed626b6dbbc42f5db87b3594bc0b5944bDerek SollenbergerGrGLGradientEffect::GrGLGradientEffect(const GrBackendEffectFactory& factory) 82780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru : INHERITED(factory) 8280a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger , fCachedYCoord(SK_ScalarMax) { 829363e546ed626b6dbbc42f5db87b3594bc0b5944bDerek Sollenberger} 83080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 831363e546ed626b6dbbc42f5db87b3594bc0b5944bDerek SollenbergerGrGLGradientEffect::~GrGLGradientEffect() { } 83280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 8330a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenbergervoid GrGLGradientEffect::emitUniforms(GrGLShaderBuilder* builder, EffectKey key) { 8340a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 8350a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (GrGradientEffect::kTwo_ColorType == ColorTypeFromKey(key)) { // 2 Color case 8360a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 8370a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger kVec4f_GrSLType, "GradientStartColor"); 8380a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 8390a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger kVec4f_GrSLType, "GradientEndColor"); 8400a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 8410a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else if (GrGradientEffect::kThree_ColorType == ColorTypeFromKey(key)){ // 3 Color Case 8420a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 8430a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger kVec4f_GrSLType, "GradientStartColor"); 8440a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fColorMidUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 8450a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger kVec4f_GrSLType, "GradientMidColor"); 8460a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 8470a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger kVec4f_GrSLType, "GradientEndColor"); 8480a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 8490a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else { // if not a fast case 8500a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fFSYUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 8510a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger kFloat_GrSLType, "GradientYCoordFS"); 8520a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 8530a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger} 8540a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 8550a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenbergerstatic inline void set_color_uni(const GrGLUniformManager& uman, 8560a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger const GrGLUniformManager::UniformHandle uni, 8570a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger const SkColor* color) { 8580a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger uman.set4f(uni, 8590a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkColorGetR(*color) / 255.f, 8600a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkColorGetG(*color) / 255.f, 8610a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkColorGetB(*color) / 255.f, 8620a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkColorGetA(*color) / 255.f); 8630a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger} 8640a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 8650a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenbergerstatic inline void set_mul_color_uni(const GrGLUniformManager& uman, 8660a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger const GrGLUniformManager::UniformHandle uni, 8670a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger const SkColor* color){ 8680a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger float a = SkColorGetA(*color) / 255.f; 8690a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger float aDiv255 = a / 255.f; 8700a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger uman.set4f(uni, 8710a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkColorGetR(*color) * aDiv255, 8720a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkColorGetG(*color) * aDiv255, 8730a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkColorGetB(*color) * aDiv255, 8740a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger a); 87580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 87680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 877e2022cc36e47b9f0d219eb5cd24be61772c28d3bDerek Sollenbergervoid GrGLGradientEffect::setData(const GrGLUniformManager& uman, 878e2022cc36e47b9f0d219eb5cd24be61772c28d3bDerek Sollenberger const GrDrawEffect& drawEffect) { 8790a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 880e2022cc36e47b9f0d219eb5cd24be61772c28d3bDerek Sollenberger const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 881363e546ed626b6dbbc42f5db87b3594bc0b5944bDerek Sollenberger 8820a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 8830a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (GrGradientEffect::kTwo_ColorType == e.getColorType()){ 8840a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 8850a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 8860a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_mul_color_uni(uman, fColorStartUni, e.getColors(0)); 8870a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_mul_color_uni(uman, fColorEndUni, e.getColors(1)); 8880a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else { 8890a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_color_uni(uman, fColorStartUni, e.getColors(0)); 8900a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_color_uni(uman, fColorEndUni, e.getColors(1)); 8910a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 8920a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 8930a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else if (GrGradientEffect::kThree_ColorType == e.getColorType()){ 8940a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 8950a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 8960a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_mul_color_uni(uman, fColorStartUni, e.getColors(0)); 8970a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_mul_color_uni(uman, fColorMidUni, e.getColors(1)); 8980a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_mul_color_uni(uman, fColorEndUni, e.getColors(2)); 8990a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else { 9000a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_color_uni(uman, fColorStartUni, e.getColors(0)); 9010a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_color_uni(uman, fColorMidUni, e.getColors(1)); 9020a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger set_color_uni(uman, fColorEndUni, e.getColors(2)); 9030a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 9040a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else { 9050a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 9060a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkScalar yCoord = e.getYCoord(); 9070a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (yCoord != fCachedYCoord) { 9080a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger uman.set1f(fFSYUni, yCoord); 9090a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fCachedYCoord = yCoord; 9100a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 91180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 91280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 91380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 9140a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 9150a657bbc2c6fc9daf699942e023050536d5ec95fDerek SollenbergerGrGLEffect::EffectKey GrGLGradientEffect::GenBaseGradientKey(const GrDrawEffect& drawEffect) { 916e2022cc36e47b9f0d219eb5cd24be61772c28d3bDerek Sollenberger const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 9170a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 9180a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger EffectKey key = 0; 9190a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 9200a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (GrGradientEffect::kTwo_ColorType == e.getColorType()) { 9210a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger key |= kTwoColorKey; 9220a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else if (GrGradientEffect::kThree_ColorType == e.getColorType()){ 9230a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger key |= kThreeColorKey; 9240a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 9250a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 9260a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 9270a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger key |= kPremulBeforeInterpKey; 9280a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 9290a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 9300a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger return key; 9310a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger} 9320a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 9330a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenbergervoid GrGLGradientEffect::emitColor(GrGLShaderBuilder* builder, 9340a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger const char* gradientTValue, 9350a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger EffectKey key, 9360a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger const char* outputColor, 9370a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger const char* inputColor, 9380a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger const TextureSamplerArray& samplers) { 9390a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (GrGradientEffect::kTwo_ColorType == ColorTypeFromKey(key)){ 9400a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\tvec4 colorTemp = mix(%s, %s, clamp(%s, 0.0, 1.0));\n", 9410a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->getUniformVariable(fColorStartUni).c_str(), 9420a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->getUniformVariable(fColorEndUni).c_str(), 9430a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger gradientTValue); 9440a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // Note that we could skip this step if both colors are known to be opaque. Two 9450a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // considerations: 9460a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // The gradient SkShader reporting opaque is more restrictive than necessary in the two pt 9470a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // case. Make sure the key reflects this optimization (and note that it can use the same 9480a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // shader as thekBeforeIterp case). This same optimization applies to the 3 color case below. 9490a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(key)) { 9500a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 9510a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 9520a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 9530a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\t%s = %s;\n", outputColor, 9540a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 9550a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else if (GrGradientEffect::kThree_ColorType == ColorTypeFromKey(key)){ 9560a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\tfloat oneMinus2t = 1.0 - (2.0 * (%s));\n", 9570a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger gradientTValue); 9580a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\tvec4 colorTemp = clamp(oneMinus2t, 0.0, 1.0) * %s;\n", 9590a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->getUniformVariable(fColorStartUni).c_str()); 9600a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (kTegra3_GrGLRenderer == builder->ctxInfo().renderer()) { 9610a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // The Tegra3 compiler will sometimes never return if we have 9620a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // min(abs(oneMinus2t), 1.0), or do the abs first in a separate expression. 9630a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppend("\tfloat minAbs = abs(oneMinus2t);\n"); 9640a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppend("\tminAbs = minAbs > 1.0 ? 1.0 : minAbs;\n"); 9650a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\tcolorTemp += (1.0 - minAbs) * %s;\n", 9660a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->getUniformVariable(fColorMidUni).c_str()); 9670a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else { 9680a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\tcolorTemp += (1.0 - min(abs(oneMinus2t), 1.0)) * %s;\n", 9690a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->getUniformVariable(fColorMidUni).c_str()); 9700a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 9710a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\tcolorTemp += clamp(-oneMinus2t, 0.0, 1.0) * %s;\n", 9720a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->getUniformVariable(fColorEndUni).c_str()); 9730a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(key)) { 9740a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 9750a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 9760a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 9770a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\t%s = %s;\n", outputColor, 9780a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 9790a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else { 9800a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\tvec2 coord = vec2(%s, %s);\n", 9810a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger gradientTValue, 9820a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->getUniformVariable(fFSYUni).c_str()); 9830a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppendf("\t%s = ", outputColor); 9840a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsAppendTextureLookupAndModulate(inputColor, 9850a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger samplers[0], 9860a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger "coord"); 9870a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger builder->fsCodeAppend(";\n"); 9880a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 98980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 99080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 99180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru///////////////////////////////////////////////////////////////////// 99280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 99380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruGrGradientEffect::GrGradientEffect(GrContext* ctx, 99480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru const SkGradientShaderBase& shader, 995363e546ed626b6dbbc42f5db87b3594bc0b5944bDerek Sollenberger const SkMatrix& matrix, 996d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger SkShader::TileMode tileMode) { 99780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 998d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger fIsOpaque = shader.isOpaque(); 999d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 10000a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkShader::GradientInfo info; 10010a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkScalar pos[3] = {0}; 10020a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 10030a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger info.fColorCount = 3; 10040a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger info.fColors = &fColors[0]; 10050a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger info.fColorOffsets = &pos[0]; 10060a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger shader.asAGradient(&info); 10070a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 10080a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // The two and three color specializations do not currently support tiling. 10090a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger bool foundSpecialCase = false; 10100a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (SkShader::kClamp_TileMode == info.fTileMode) { 10110a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (2 == info.fColorCount) { 10120a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fRow = -1; // flag for no atlas 10130a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fColorType = kTwo_ColorType; 10140a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger foundSpecialCase = true; 10150a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else if (3 == info.fColorCount && 10160a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger (SkScalarAbs(pos[1] - SK_ScalarHalf) < SK_Scalar1 / 1000)) { // 3 color symmetric 10170a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fRow = -1; // flag for no atlas 10180a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fColorType = kThree_ColorType; 10190a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger foundSpecialCase = true; 10200a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 10210a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 10220a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (foundSpecialCase) { 10230a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (SkGradientShader::kInterpolateColorsInPremul_Flag & info.fGradientFlags) { 10240a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fPremulType = kBeforeInterp_PremulType; 10250a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else { 10260a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fPremulType = kAfterInterp_PremulType; 10270a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 10280a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fCoordTransform.reset(kCoordSet, matrix); 102980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } else { 10300a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // doesn't matter how this is set, just be consistent because it is part of the effect key. 10310a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fPremulType = kBeforeInterp_PremulType; 10320a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkBitmap bitmap; 10330a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger shader.getGradientTableBitmap(&bitmap); 10340a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fColorType = kTexture_ColorType; 10350a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 10360a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger GrTextureStripAtlas::Desc desc; 10370a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger desc.fWidth = bitmap.width(); 10380a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger desc.fHeight = 32; 10390a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger desc.fRowHeight = bitmap.height(); 10400a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger desc.fContext = ctx; 10410a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger desc.fConfig = SkBitmapConfig2GrPixelConfig(bitmap.config()); 10420a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fAtlas = GrTextureStripAtlas::GetAtlas(desc); 10430a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger SkASSERT(NULL != fAtlas); 10440a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 10450a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // We always filter the gradient table. Each table is one row of a texture, always y-clamp. 10460a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger GrTextureParams params; 10470a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger params.setFilterMode(GrTextureParams::kBilerp_FilterMode); 10480a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger params.setTileModeX(tileMode); 10490a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 10500a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fRow = fAtlas->lockRow(bitmap); 10510a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (-1 != fRow) { 10520a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fYCoord = fAtlas->getYOffset(fRow) + SK_ScalarHalf * 10530a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fAtlas->getVerticalScaleFactor(); 10540a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fCoordTransform.reset(kCoordSet, matrix, fAtlas->getTexture()); 10550a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fTextureAccess.reset(fAtlas->getTexture(), params); 10560a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else { 10570a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger GrTexture* texture = GrLockAndRefCachedBitmapTexture(ctx, bitmap, ¶ms); 10580a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fCoordTransform.reset(kCoordSet, matrix, texture); 10590a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fTextureAccess.reset(texture, params); 10600a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fYCoord = SK_ScalarHalf; 10610a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 10620a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // Unlock immediately, this is not great, but we don't have a way of 10630a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // knowing when else to unlock it currently, so it may get purged from 10640a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger // the cache, but it'll still be ref'd until it's no longer being used. 10650a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger GrUnlockAndUnrefCachedBitmapTexture(texture); 10660a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 10670a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger this->addTextureAccess(&fTextureAccess); 106880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 10690a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger this->addCoordTransform(&fCoordTransform); 107080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 107180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 107280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste QueruGrGradientEffect::~GrGradientEffect() { 107380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (this->useAtlas()) { 107480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru fAtlas->unlockRow(fRow); 107580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 107680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 107780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 1078d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenbergerbool GrGradientEffect::onIsEqual(const GrEffect& effect) const { 1079d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger const GrGradientEffect& s = CastEffect<GrGradientEffect>(effect); 10800a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 10810a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (this->fColorType == s.getColorType()){ 10820a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 10830a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (kTwo_ColorType == fColorType) { 10840a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (*this->getColors(0) != *s.getColors(0) || 10850a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger *this->getColors(1) != *s.getColors(1)) { 10860a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger return false; 10870a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 10880a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else if (kThree_ColorType == fColorType) { 10890a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (*this->getColors(0) != *s.getColors(0) || 10900a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger *this->getColors(1) != *s.getColors(1) || 10910a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger *this->getColors(2) != *s.getColors(2)) { 10920a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger return false; 10930a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 10940a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } else { 10950a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger if (fYCoord != s.getYCoord()) { 10960a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger return false; 10970a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 10980a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 10990a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 11000a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger return fTextureAccess.getTexture() == s.fTextureAccess.getTexture() && 11010a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fTextureAccess.getParams().getTileModeX() == 1102d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger s.fTextureAccess.getParams().getTileModeX() && 11030a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger this->useAtlas() == s.useAtlas() && 11040a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger fCoordTransform.getMatrix().cheapEqualTo(s.fCoordTransform.getMatrix()); 11050a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger } 11060a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger 11070a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenberger return false; 1108d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger} 1109d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger 1110d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenbergervoid GrGradientEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const { 11117839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger if (fIsOpaque && (kA_GrColorComponentFlag & *validFlags) && 0xff == GrColorUnpackA(*color)) { 11127839ce1af63bf12fe7b3caa866970bbbb3afb13dDerek Sollenberger *validFlags = kA_GrColorComponentFlag; 1113d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger } else { 1114d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger *validFlags = 0; 1115d686ac77c2c485c4a3302eda9c1de597a6f8c568Derek Sollenberger } 111680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 111780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 11180a657bbc2c6fc9daf699942e023050536d5ec95fDerek Sollenbergerint GrGradientEffect::RandomGradientParams(SkRandom* random, 111980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkColor colors[], 112080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkScalar** stops, 112180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru SkShader::TileMode* tm) { 112280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru int outColors = random->nextRangeU(1, kMaxRandomGradientColors); 112380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 112480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru // if one color, omit stops, otherwise randomly decide whether or not to 112580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (outColors == 1 || (outColors >= 2 && random->nextBool())) { 112680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru *stops = NULL; 112780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 112880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 1129363e546ed626b6dbbc42f5db87b3594bc0b5944bDerek Sollenberger SkScalar stop = 0.f; 113080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru for (int i = 0; i < outColors; ++i) { 113180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru colors[i] = random->nextU(); 113280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru if (NULL != *stops) { 113380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru (*stops)[i] = stop; 113480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f; 113580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 113680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru } 113780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount)); 113880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 113980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru return outColors; 114080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru} 114180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 114280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 1143