SkGradientShader.cpp revision c0de5d6b5fe312ec39a544fcefdb7673082a07b8
1589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/* 2589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * Copyright 2006 The Android Open Source Project 3589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * 4589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * Use of this source code is governed by a BSD-style license that can be 5589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * found in the LICENSE file. 6589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 7589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 8589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkGradientShaderPriv.h" 9589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkLinearGradient.h" 10589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkRadialGradient.h" 11589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkTwoPointRadialGradient.h" 12589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkTwoPointConicalGradient.h" 13589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkSweepGradient.h" 14589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 15437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.comSkGradientShaderBase::SkGradientShaderBase(const Descriptor& desc) { 16437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT(desc.fCount > 1); 17589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 18589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCacheAlpha = 256; // init to a value that paint.getAlpha() can't return 19589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 20437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fMapper = desc.fMapper; 21437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkSafeRef(fMapper); 223d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fGradFlags = SkToU8(desc.fFlags); 23589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 24437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT((unsigned)desc.fTileMode < SkShader::kTileModeCount); 25589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gTileProcs)); 26437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileMode = desc.fTileMode; 27437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileProc = gTileProcs[desc.fTileMode]; 28589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 29589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache16 = fCache16Storage = NULL; 30589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32 = NULL; 31589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32PixelRef = NULL; 32589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 33589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* Note: we let the caller skip the first and/or last position. 34589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. pos[0] = 0.3, pos[1] = 0.7 35589708bf7c706348b763e8277004cb160b202bdbrileya@google.com In these cases, we insert dummy entries to ensure that the final data 36589708bf7c706348b763e8277004cb160b202bdbrileya@google.com will be bracketed by [0, 1]. 37589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. our_pos[0] = 0, our_pos[1] = 0.3, our_pos[2] = 0.7, our_pos[3] = 1 38589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 39589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Thus colorCount (the caller's value, and fColorCount (our value) may 40589708bf7c706348b763e8277004cb160b202bdbrileya@google.com differ by up to 2. In the above example: 41589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorCount = 2 42589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount = 4 43589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 44437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fColorCount = desc.fCount; 45589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // check if we need to add in dummy start and/or end position/colors 46589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyFirst = false; 47589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyLast = false; 48437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 49437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyFirst = desc.fPos[0] != 0; 50437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyLast = desc.fPos[desc.fCount - 1] != SK_Scalar1; 51589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount += dummyFirst + dummyLast; 52589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 53589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 54589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > kColorStorageCount) { 55589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = sizeof(SkColor) + sizeof(Rec); 56589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = reinterpret_cast<SkColor*>( 57589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_malloc_throw(size * fColorCount)); 58589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 59589708bf7c706348b763e8277004cb160b202bdbrileya@google.com else { 60589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = fStorage; 61589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 62589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 63589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // Now copy over the colors, adding the dummies as needed 64589708bf7c706348b763e8277004cb160b202bdbrileya@google.com { 65589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor* origColors = fOrigColors; 66589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyFirst) { 67437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors++ = desc.fColors[0]; 68589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 69437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com memcpy(origColors, desc.fColors, desc.fCount * sizeof(SkColor)); 70589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyLast) { 71437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com origColors += desc.fCount; 72437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors = desc.fColors[desc.fCount - 1]; 73589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 74589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 75589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 76589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fRecs = (Rec*)(fOrigColors + fColorCount); 77589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 78589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 79589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = 0; 80589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // recs->fScale = 0; // unused; 81589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 82437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 83589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* We need to convert the user's array of relative positions into 84589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fixed-point positions and scale factors. We need these results 85589708bf7c706348b763e8277004cb160b202bdbrileya@google.com to be strictly monotonic (no two values equal or out of order). 86589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Hence this complex loop that just jams a zero for the scale 87589708bf7c706348b763e8277004cb160b202bdbrileya@google.com value if it sees a segment out of order, and it assures that 88589708bf7c706348b763e8277004cb160b202bdbrileya@google.com we start at 0 and end at 1.0 89589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 90589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed prev = 0; 91589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int startIndex = dummyFirst ? 0 : 1; 92437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com int count = desc.fCount + dummyLast; 93589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = startIndex; i < count; i++) { 94589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force the last value to be 1.0 95589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed curr; 96437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (i == desc.fCount) { // we're really at the dummyLast 97589708bf7c706348b763e8277004cb160b202bdbrileya@google.com curr = SK_Fixed1; 98589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 99437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com curr = SkScalarToFixed(desc.fPos[i]); 100589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 101589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // pin curr withing range 102589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (curr < 0) { 103589708bf7c706348b763e8277004cb160b202bdbrileya@google.com curr = 0; 104589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else if (curr > SK_Fixed1) { 105589708bf7c706348b763e8277004cb160b202bdbrileya@google.com curr = SK_Fixed1; 106589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 107589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = curr; 108589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (curr > prev) { 109589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = (1 << 24) / (curr - prev); 110589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 111589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = 0; // ignore this segment 112589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 113589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // get ready for the next value 114589708bf7c706348b763e8277004cb160b202bdbrileya@google.com prev = curr; 115589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 116589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 117589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { // assume even distribution 118437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed dp = SK_Fixed1 / (desc.fCount - 1); 119589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed p = dp; 120437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed scale = (desc.fCount - 1) << 8; // (1 << 24) / dp 121437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com for (int i = 1; i < desc.fCount; i++) { 122589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = p; 123589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = scale; 124589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 125589708bf7c706348b763e8277004cb160b202bdbrileya@google.com p += dp; 126589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 127589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 128589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 129589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->initCommon(); 130589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 131589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1323d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic uint32_t pack_mode_flags(SkShader::TileMode mode, uint32_t flags) { 1333d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkASSERT(0 == (flags >> 28)); 1343d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkASSERT(0 == ((uint32_t)mode >> 4)); 1353d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return (flags << 4) | mode; 1363d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 1373d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 1383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic SkShader::TileMode unpack_mode(uint32_t packed) { 1393d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return (SkShader::TileMode)(packed & 0xF); 1403d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 1413d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 1423d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic uint32_t unpack_flags(uint32_t packed) { 1433d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return packed >> 4; 1443d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 1453d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 1463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comSkGradientShaderBase::SkGradientShaderBase(SkFlattenableReadBuffer& buffer) : INHERITED(buffer) { 147589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCacheAlpha = 256; 148589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 149c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com fMapper = buffer.readFlattenableT<SkUnitMapper>(); 150589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 151589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache16 = fCache16Storage = NULL; 152589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32 = NULL; 153589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32PixelRef = NULL; 154589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 155c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com int colorCount = fColorCount = buffer.getArrayCount(); 156589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (colorCount > kColorStorageCount) { 157589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = sizeof(SkColor) + sizeof(SkPMColor) + sizeof(Rec); 158589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = (SkColor*)sk_malloc_throw(size * colorCount); 159589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 160589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = fStorage; 161589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 162c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.readColorArray(fOrigColors); 163589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1643d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com { 1653d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t packed = buffer.readUInt(); 1663d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fGradFlags = SkToU8(unpack_flags(packed)); 1673d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fTileMode = unpack_mode(packed); 1683d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } 169589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fTileProc = gTileProcs[fTileMode]; 170589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fRecs = (Rec*)(fOrigColors + colorCount); 171589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (colorCount > 2) { 172589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 173589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs[0].fPos = 0; 174589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < colorCount; i++) { 175c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com recs[i].fPos = buffer.readInt(); 176c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com recs[i].fScale = buffer.readUInt(); 177589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 178589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 179589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer.readMatrix(&fPtsToUnit); 180589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->initCommon(); 181589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 182589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 183589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkGradientShaderBase::~SkGradientShaderBase() { 184589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fCache16Storage) { 185589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_free(fCache16Storage); 186589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 187589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkSafeUnref(fCache32PixelRef); 188589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fOrigColors != fStorage) { 189589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_free(fOrigColors); 190589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 191589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkSafeUnref(fMapper); 192589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 193589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 194589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::initCommon() { 195589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags = 0; 196589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned colorAlpha = 0xFF; 197589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 0; i < fColorCount; i++) { 198589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorAlpha &= SkColorGetA(fOrigColors[i]); 199589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 200589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorsAreOpaque = colorAlpha == 0xFF; 201589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 202589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 203589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::flatten(SkFlattenableWriteBuffer& buffer) const { 204589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->INHERITED::flatten(buffer); 205589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer.writeFlattenable(fMapper); 206c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.writeColorArray(fOrigColors, fColorCount); 2073d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com buffer.writeUInt(pack_mode_flags(fTileMode, fGradFlags)); 208589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 209589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 210589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < fColorCount; i++) { 211c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.writeInt(recs[i].fPos); 212c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.writeUInt(recs[i].fScale); 213589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 214589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 215589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer.writeMatrix(fPtsToUnit); 216589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 217589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 218589708bf7c706348b763e8277004cb160b202bdbrileya@google.combool SkGradientShaderBase::isOpaque() const { 219589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return fColorsAreOpaque; 220589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 221589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 222589708bf7c706348b763e8277004cb160b202bdbrileya@google.combool SkGradientShaderBase::setContext(const SkBitmap& device, 223589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkPaint& paint, 224589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkMatrix& matrix) { 225589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (!this->INHERITED::setContext(device, paint, matrix)) { 226589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return false; 227589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 228589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 229589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkMatrix& inverse = this->getTotalInverse(); 230589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 231589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (!fDstToIndex.setConcat(fPtsToUnit, inverse)) { 232a641f3f18e5319773989812a888f3fad49e4f2adreed@google.com // need to keep our set/end context calls balanced. 233a641f3f18e5319773989812a888f3fad49e4f2adreed@google.com this->INHERITED::endContext(); 234589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return false; 235589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 236589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 237589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fDstToIndexProc = fDstToIndex.getMapXYProc(); 238589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fDstToIndexClass = (uint8_t)SkShader::ComputeMatrixClass(fDstToIndex); 239589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 240589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // now convert our colors in to PMColors 241589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned paintAlpha = this->getPaintAlpha(); 242589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 243589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags = this->INHERITED::getFlags(); 244589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorsAreOpaque && paintAlpha == 0xFF) { 245589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kOpaqueAlpha_Flag; 246589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 247589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // we can do span16 as long as our individual colors are opaque, 248589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // regardless of the paint's alpha 249589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorsAreOpaque) { 250589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kHasSpan16_Flag; 251589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 252589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 253589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->setCacheAlpha(paintAlpha); 254589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return true; 255589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 256589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 257589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::setCacheAlpha(U8CPU alpha) const { 258589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // if the new alpha differs from the previous time we were called, inval our cache 259589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // this will trigger the cache to be rebuilt. 260589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // we don't care about the first time, since the cache ptrs will already be NULL 261589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fCacheAlpha != alpha) { 262589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache16 = NULL; // inval the cache 263589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32 = NULL; // inval the cache 264589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCacheAlpha = alpha; // record the new alpha 265589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // inform our subclasses 266589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fCache32PixelRef) { 267589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32PixelRef->notifyPixelsChanged(); 268589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 269589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 270589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 271589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 272589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define Fixed_To_Dot8(x) (((x) + 0x80) >> 8) 273589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 274589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/** We take the original colors, not our premultiplied PMColors, since we can 275589708bf7c706348b763e8277004cb160b202bdbrileya@google.com build a 16bit table as long as the original colors are opaque, even if the 276589708bf7c706348b763e8277004cb160b202bdbrileya@google.com paint specifies a non-opaque alpha. 277589708bf7c706348b763e8277004cb160b202bdbrileya@google.com*/ 278589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::Build16bitCache(uint16_t cache[], SkColor c0, SkColor c1, 279589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int count) { 280589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 281589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c0) == 0xFF); 282589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c1) == 0xFF); 283589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 284589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed r = SkColorGetR(c0); 285589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed g = SkColorGetG(c0); 286589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed b = SkColorGetB(c0); 287589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 288589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dr = SkIntToFixed(SkColorGetR(c1) - r) / (count - 1); 289589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dg = SkIntToFixed(SkColorGetG(c1) - g) / (count - 1); 290589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed db = SkIntToFixed(SkColorGetB(c1) - b) / (count - 1); 291589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 292589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r = SkIntToFixed(r) + 0x8000; 293589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g = SkIntToFixed(g) + 0x8000; 294589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b = SkIntToFixed(b) + 0x8000; 295589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 296589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { 297589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned rr = r >> 16; 298589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned gg = g >> 16; 299589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned bb = b >> 16; 300589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[0] = SkPackRGB16(SkR32ToR16(rr), SkG32ToG16(gg), SkB32ToB16(bb)); 301589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[kCache16Count] = SkDitherPack888ToRGB16(rr, gg, bb); 302589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache += 1; 303589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r += dr; 304589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g += dg; 305589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b += db; 306589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (--count != 0); 307589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 308589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 3093d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com/* 3103d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * r,g,b used to be SkFixed, but on gcc (4.2.1 mac and 4.6.3 goobuntu) in 3113d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * release builds, we saw a compiler error where the 0xFF parameter in 3123d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * SkPackARGB32() was being totally ignored whenever it was called with 3133d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * a non-zero add (e.g. 0x8000). 3143d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3153d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We found two work-arounds: 3163d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 1. change r,g,b to unsigned (or just one of them) 3173d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 2. change SkPackARGB32 to + its (a << SK_A32_SHIFT) value instead 3183d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * of using | 3193d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3203d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We chose #1 just because it was more localized. 3213d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * See http://code.google.com/p/skia/issues/detail?id=1113 3223d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3233d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * The type SkUFixed encapsulate this need for unsigned, but logically Fixed. 3243d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com */ 3253d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comtypedef uint32_t SkUFixed; 3263d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 327589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::Build32bitCache(SkPMColor cache[], SkColor c0, SkColor c1, 3283d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int count, U8CPU paintAlpha, uint32_t gradFlags) { 329589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 330589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 331589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // need to apply paintAlpha to our two endpoints 3323d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a0 = SkMulDiv255Round(SkColorGetA(c0), paintAlpha); 3333d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a1 = SkMulDiv255Round(SkColorGetA(c1), paintAlpha); 334589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 335d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 3363d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const bool interpInPremul = SkToBool(gradFlags & 3373d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkGradientShader::kInterpolateColorsInPremul_Flag); 3383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3393d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r0 = SkColorGetR(c0); 3403d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g0 = SkColorGetG(c0); 3413d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b0 = SkColorGetB(c0); 3423d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3433d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r1 = SkColorGetR(c1); 3443d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g1 = SkColorGetG(c1); 3453d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b1 = SkColorGetB(c1); 3463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3473d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (interpInPremul) { 3483d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r0 = SkMulDiv255Round(r0, a0); 3493d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g0 = SkMulDiv255Round(g0, a0); 3503d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b0 = SkMulDiv255Round(b0, a0); 3513d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3523d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r1 = SkMulDiv255Round(r1, a1); 3533d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g1 = SkMulDiv255Round(g1, a1); 3543d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b1 = SkMulDiv255Round(b1, a1); 3553d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } 3563d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3573d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed da = SkIntToFixed(a1 - a0) / (count - 1); 3583d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dr = SkIntToFixed(r1 - r0) / (count - 1); 3593d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dg = SkIntToFixed(g1 - g0) / (count - 1); 3603d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed db = SkIntToFixed(b1 - b0) / (count - 1); 361589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 362d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* We pre-add 1/8 to avoid having to add this to our [0] value each time 363d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com in the loop. Without this, the bias for each would be 364d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 0x2000 0xA000 0xE000 0x6000 365d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com With this trick, we can add 0 for the first (no-op) and just adjust the 366d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com others. 367d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 3683d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed a = SkIntToFixed(a0) + 0x2000; 3693d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed r = SkIntToFixed(r0) + 0x2000; 3703d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed g = SkIntToFixed(g0) + 0x2000; 3713d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed b = SkIntToFixed(b0) + 0x2000; 372d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 373d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* 374d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Our dither-cell (spatially) is 375d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 0 2 376d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 3 1 377d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Where 378d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [0] -> [-1/8 ... 1/8 ) values near 0 379d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [1] -> [ 1/8 ... 3/8 ) values near 1/4 380d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [2] -> [ 3/8 ... 5/8 ) values near 1/2 381d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [3] -> [ 5/8 ... 7/8 ) values near 3/4 382d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 383589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 3843d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (0xFF == a0 && 0 == da) { 385d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 386d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPackARGB32(0xFF, (r + 0 ) >> 16, 387d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 388d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 389d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPackARGB32(0xFF, (r + 0x8000) >> 16, 390d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 391d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 392d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPackARGB32(0xFF, (r + 0xC000) >> 16, 393d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 394d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 395d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPackARGB32(0xFF, (r + 0x4000) >> 16, 396d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 397d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 398d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 399d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 400d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 401d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 402d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 4033d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else if (interpInPremul) { 4043d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com do { 4053d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*0] = SkPackARGB32((a + 0 ) >> 16, 4063d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0 ) >> 16, 4073d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0 ) >> 16, 4083d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0 ) >> 16); 4093d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*1] = SkPackARGB32((a + 0x8000) >> 16, 4103d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x8000) >> 16, 4113d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x8000) >> 16, 4123d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x8000) >> 16); 4133d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*2] = SkPackARGB32((a + 0xC000) >> 16, 4143d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0xC000) >> 16, 4153d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0xC000) >> 16, 4163d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0xC000) >> 16); 4173d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*3] = SkPackARGB32((a + 0x4000) >> 16, 4183d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x4000) >> 16, 4193d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x4000) >> 16, 4203d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x4000) >> 16); 4213d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache += 1; 4223d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com a += da; 4233d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r += dr; 4243d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g += dg; 4253d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b += db; 4263d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } while (--count != 0); 4273d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else { // interpolate in unpreml space 428d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 429d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPremultiplyARGBInline((a + 0 ) >> 16, 430d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0 ) >> 16, 431d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 432d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 433d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPremultiplyARGBInline((a + 0x8000) >> 16, 434d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x8000) >> 16, 435d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 436d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 437d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPremultiplyARGBInline((a + 0xC000) >> 16, 438d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0xC000) >> 16, 439d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 440d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 441d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPremultiplyARGBInline((a + 0x4000) >> 16, 442d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x4000) >> 16, 443d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 444d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 445d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 446d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com a += da; 447d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 448d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 449d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 450d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 451d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } 452589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 453589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 454589708bf7c706348b763e8277004cb160b202bdbrileya@google.comstatic inline int SkFixedToFFFF(SkFixed x) { 455589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT((unsigned)x <= SK_Fixed1); 456589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return x - (x >> 16); 457589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 458589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 459589708bf7c706348b763e8277004cb160b202bdbrileya@google.comstatic inline U16CPU bitsTo16(unsigned x, const unsigned bits) { 460589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(x < (1U << bits)); 461589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (6 == bits) { 462589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return (x << 10) | (x << 4) | (x >> 2); 463589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 464589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (8 == bits) { 465589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return (x << 8) | x; 466589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 467589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_throw(); 468589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return 0; 469589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 470589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 471589708bf7c706348b763e8277004cb160b202bdbrileya@google.comconst uint16_t* SkGradientShaderBase::getCache16() const { 472589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fCache16 == NULL) { 473589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // double the count for dither entries 474589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const int entryCount = kCache16Count * 2; 475589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const size_t allocSize = sizeof(uint16_t) * entryCount; 476589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 477589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fCache16Storage == NULL) { // set the storage and our working ptr 478589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache16Storage = (uint16_t*)sk_malloc_throw(allocSize); 479589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 480589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache16 = fCache16Storage; 481589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount == 2) { 482589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Build16bitCache(fCache16, fOrigColors[0], fOrigColors[1], 4833c2102c2d2cdad328a0d87329e1a973f12775836reed@google.com kCache16Count); 484589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 485589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* rec = fRecs; 486589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int prevIndex = 0; 487589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < fColorCount; i++) { 488589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache16Shift; 489589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(nextIndex < kCache16Count); 490589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 491589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (nextIndex > prevIndex) 492589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Build16bitCache(fCache16 + prevIndex, fOrigColors[i-1], fOrigColors[i], nextIndex - prevIndex + 1); 493589708bf7c706348b763e8277004cb160b202bdbrileya@google.com prevIndex = nextIndex; 494589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 495589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 496589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 497589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fMapper) { 498589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache16Storage = (uint16_t*)sk_malloc_throw(allocSize); 499589708bf7c706348b763e8277004cb160b202bdbrileya@google.com uint16_t* linear = fCache16; // just computed linear data 500589708bf7c706348b763e8277004cb160b202bdbrileya@google.com uint16_t* mapped = fCache16Storage; // storage for mapped data 501589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkUnitMapper* map = fMapper; 5023c2102c2d2cdad328a0d87329e1a973f12775836reed@google.com for (int i = 0; i < kCache16Count; i++) { 503589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int index = map->mapUnit16(bitsTo16(i, kCache16Bits)) >> kCache16Shift; 504589708bf7c706348b763e8277004cb160b202bdbrileya@google.com mapped[i] = linear[index]; 505589708bf7c706348b763e8277004cb160b202bdbrileya@google.com mapped[i + kCache16Count] = linear[index + kCache16Count]; 506589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 507589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_free(fCache16); 508589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache16 = fCache16Storage; 509589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 510589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 511589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return fCache16; 512589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 513589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 514589708bf7c706348b763e8277004cb160b202bdbrileya@google.comconst SkPMColor* SkGradientShaderBase::getCache32() const { 515589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fCache32 == NULL) { 516589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // double the count for dither entries 51760040292be58ac553298209fb2e0684a4cb17dccreed@google.com const int entryCount = kCache32Count * 4; 518589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const size_t allocSize = sizeof(SkPMColor) * entryCount; 519589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 520589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (NULL == fCache32PixelRef) { 521589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32PixelRef = SkNEW_ARGS(SkMallocPixelRef, 522589708bf7c706348b763e8277004cb160b202bdbrileya@google.com (NULL, allocSize, NULL)); 523589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 524589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32 = (SkPMColor*)fCache32PixelRef->getAddr(); 525589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount == 2) { 526589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Build32bitCache(fCache32, fOrigColors[0], fOrigColors[1], 5273d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com kCache32Count, fCacheAlpha, fGradFlags); 528589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 529589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* rec = fRecs; 530589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int prevIndex = 0; 531589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < fColorCount; i++) { 532589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache32Shift; 5333c2102c2d2cdad328a0d87329e1a973f12775836reed@google.com SkASSERT(nextIndex < kCache32Count); 534589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 535589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (nextIndex > prevIndex) 536589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Build32bitCache(fCache32 + prevIndex, fOrigColors[i-1], 5373d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fOrigColors[i], nextIndex - prevIndex + 1, 5383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fCacheAlpha, fGradFlags); 539589708bf7c706348b763e8277004cb160b202bdbrileya@google.com prevIndex = nextIndex; 540589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 541589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 542589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 543589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fMapper) { 544589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkMallocPixelRef* newPR = SkNEW_ARGS(SkMallocPixelRef, 545589708bf7c706348b763e8277004cb160b202bdbrileya@google.com (NULL, allocSize, NULL)); 546589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkPMColor* linear = fCache32; // just computed linear data 547589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkPMColor* mapped = (SkPMColor*)newPR->getAddr(); // storage for mapped data 548589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkUnitMapper* map = fMapper; 5493c2102c2d2cdad328a0d87329e1a973f12775836reed@google.com for (int i = 0; i < kCache32Count; i++) { 550589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int index = map->mapUnit16((i << 8) | i) >> 8; 551d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com mapped[i + kCache32Count*0] = linear[index + kCache32Count*0]; 552d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com mapped[i + kCache32Count*1] = linear[index + kCache32Count*1]; 55360040292be58ac553298209fb2e0684a4cb17dccreed@google.com mapped[i + kCache32Count*2] = linear[index + kCache32Count*2]; 55460040292be58ac553298209fb2e0684a4cb17dccreed@google.com mapped[i + kCache32Count*3] = linear[index + kCache32Count*3]; 555589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 556589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32PixelRef->unref(); 557589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32PixelRef = newPR; 558589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fCache32 = (SkPMColor*)newPR->getAddr(); 559589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 560589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 561589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return fCache32; 562589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 563589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 564589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/* 565589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * Because our caller might rebuild the same (logically the same) gradient 566589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * over and over, we'd like to return exactly the same "bitmap" if possible, 567589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * allowing the client to utilize a cache of our bitmap (e.g. with a GPU). 568589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * To do that, we maintain a private cache of built-bitmaps, based on our 569589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * colors and positions. Note: we don't try to flatten the fMapper, so if one 570589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * is present, we skip the cache for now. 571589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 5721c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.comvoid SkGradientShaderBase::getGradientTableBitmap(SkBitmap* bitmap) const { 573589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // our caller assumes no external alpha, so we ensure that our cache is 574589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // built with 0xFF 575589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->setCacheAlpha(0xFF); 576589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 577589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // don't have a way to put the mapper into our cache-key yet 578589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fMapper) { 579589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force our cahce32pixelref to be built 580589708bf7c706348b763e8277004cb160b202bdbrileya@google.com (void)this->getCache32(); 5813c2102c2d2cdad328a0d87329e1a973f12775836reed@google.com bitmap->setConfig(SkBitmap::kARGB_8888_Config, kCache32Count, 1); 582589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bitmap->setPixelRef(fCache32PixelRef); 583589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return; 584589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 585589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 5863d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com // build our key: [numColors + colors[] + {positions[]} + flags ] 5873d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int count = 1 + fColorCount + 1; 588589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 589589708bf7c706348b763e8277004cb160b202bdbrileya@google.com count += fColorCount - 1; // fRecs[].fPos 590589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 591589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 592589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkAutoSTMalloc<16, int32_t> storage(count); 593589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int32_t* buffer = storage.get(); 594589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 595589708bf7c706348b763e8277004cb160b202bdbrileya@google.com *buffer++ = fColorCount; 596589708bf7c706348b763e8277004cb160b202bdbrileya@google.com memcpy(buffer, fOrigColors, fColorCount * sizeof(SkColor)); 597589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer += fColorCount; 598589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 599589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < fColorCount; i++) { 600589708bf7c706348b763e8277004cb160b202bdbrileya@google.com *buffer++ = fRecs[i].fPos; 601589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 602589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 6033d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com *buffer++ = fGradFlags; 604589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(buffer - storage.get() == count); 605589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 606589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /////////////////////////////////// 607589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 608589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DECLARE_STATIC_MUTEX(gMutex); 609589708bf7c706348b763e8277004cb160b202bdbrileya@google.com static SkBitmapCache* gCache; 610589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // each cache cost 1K of RAM, since each bitmap will be 1x256 at 32bpp 611589708bf7c706348b763e8277004cb160b202bdbrileya@google.com static const int MAX_NUM_CACHED_GRADIENT_BITMAPS = 32; 612589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkAutoMutexAcquire ama(gMutex); 613589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 614589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (NULL == gCache) { 615589708bf7c706348b763e8277004cb160b202bdbrileya@google.com gCache = SkNEW_ARGS(SkBitmapCache, (MAX_NUM_CACHED_GRADIENT_BITMAPS)); 616589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 617589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = count * sizeof(int32_t); 618589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 619589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (!gCache->find(storage.get(), size, bitmap)) { 620589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force our cahce32pixelref to be built 621589708bf7c706348b763e8277004cb160b202bdbrileya@google.com (void)this->getCache32(); 6223c2102c2d2cdad328a0d87329e1a973f12775836reed@google.com bitmap->setConfig(SkBitmap::kARGB_8888_Config, kCache32Count, 1); 623589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bitmap->setPixelRef(fCache32PixelRef); 624589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 625589708bf7c706348b763e8277004cb160b202bdbrileya@google.com gCache->add(storage.get(), size, *bitmap); 626589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 627589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 628589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 629589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::commonAsAGradient(GradientInfo* info) const { 630589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info) { 631589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorCount >= fColorCount) { 632589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColors) { 63376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com memcpy(info->fColors, fOrigColors, fColorCount * sizeof(SkColor)); 634589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 635589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorOffsets) { 636589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount == 2) { 637589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[0] = 0; 638589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[1] = SK_Scalar1; 639589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else if (fColorCount > 2) { 64076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 641589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[i] = SkFixedToScalar(fRecs[i].fPos); 64276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 643589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 644589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 645589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 646589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorCount = fColorCount; 647589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fTileMode = fTileMode; 6483d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com info->fGradientFlags = fGradFlags; 649589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 650589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 651589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 65276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com#ifdef SK_DEVELOPER 65376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.comvoid SkGradientShaderBase::toString(SkString* str) const { 65476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 65576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendf("%d colors: ", fColorCount); 65676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 65776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 65876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendHex(fOrigColors[i]); 65976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 66076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 66176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 66276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 66376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 66476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (fColorCount > 2) { 66576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" points: ("); 66676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 66776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendScalar(SkFixedToScalar(fRecs[i].fPos)); 66876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 66976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 67076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 67176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 67276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(")"); 67376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 67476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 67576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com static const char* gTileModeName[SkShader::kTileModeCount] = { 67676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com "clamp", "repeat", "mirror" 67776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com }; 67876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 67976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" "); 68076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(gTileModeName[fTileMode]); 68176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 68276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com // TODO: add "fMapper->toString(str);" when SkUnitMapper::toString is added 68376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 68476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com this->INHERITED::toString(str); 68576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com} 68676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com#endif 68776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 688589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 689589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 690589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 691589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkEmptyShader.h" 692589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 693589708bf7c706348b763e8277004cb160b202bdbrileya@google.com// assumes colors is SkColor* and pos is SkScalar* 694589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define EXPAND_1_COLOR(count) \ 695589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor tmp[2]; \ 696589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { \ 697589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (1 == count) { \ 698589708bf7c706348b763e8277004cb160b202bdbrileya@google.com tmp[0] = tmp[1] = colors[0]; \ 699589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colors = tmp; \ 700589708bf7c706348b763e8277004cb160b202bdbrileya@google.com pos = NULL; \ 701589708bf7c706348b763e8277004cb160b202bdbrileya@google.com count = 2; \ 702589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } \ 703589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (0) 704589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 705437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.comstatic void desc_init(SkGradientShaderBase::Descriptor* desc, 706437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com const SkColor colors[], 707437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com const SkScalar pos[], int colorCount, 708437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkShader::TileMode mode, 7093d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, uint32_t flags) { 710437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fColors = colors; 711437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fPos = pos; 712437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fCount = colorCount; 713437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fTileMode = mode; 714437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fMapper = mapper; 7153d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc->fFlags = flags; 716437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com} 717437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com 718589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateLinear(const SkPoint pts[2], 719589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 720589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 721589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7223d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, 7233d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 724589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (NULL == pts || NULL == colors || colorCount < 1) { 725589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 726589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 727589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 728589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 729437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 7303d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 731437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com return SkNEW_ARGS(SkLinearGradient, (pts, desc)); 732589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 733589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 734589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateRadial(const SkPoint& center, SkScalar radius, 735589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 736589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 737589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, 7393d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 740589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (radius <= 0 || NULL == colors || colorCount < 1) { 741589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 742589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 743589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 744589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 745437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 7463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 747437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com return SkNEW_ARGS(SkRadialGradient, (center, radius, desc)); 748589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 749589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 750589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointRadial(const SkPoint& start, 751589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar startRadius, 752589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkPoint& end, 753589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar endRadius, 754589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 755589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 756589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int colorCount, 757589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7583d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, 7593d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 760589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 761589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 762589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 763589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 764fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com 765437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 7663d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 767589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return SkNEW_ARGS(SkTwoPointRadialGradient, 768437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com (start, startRadius, end, endRadius, desc)); 769589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 770589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 771589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointConical(const SkPoint& start, 7723d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar startRadius, 7733d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkPoint& end, 7743d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar endRadius, 7753d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkColor colors[], 7763d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkScalar pos[], 7773d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int colorCount, 7783d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkShader::TileMode mode, 7793d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, 7803d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 781589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 782589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 783589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 784589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (start == end && startRadius == endRadius) { 785589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return SkNEW(SkEmptyShader); 786589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 7871ee7c6a18a511cde879941324f173ad4c8c123f8rileya@google.com EXPAND_1_COLOR(colorCount); 788589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 789437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 7903d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 791589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return SkNEW_ARGS(SkTwoPointConicalGradient, 792437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com (start, startRadius, end, endRadius, desc)); 793589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 794589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 795589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateSweep(SkScalar cx, SkScalar cy, 796589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 797589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 7983d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int colorCount, SkUnitMapper* mapper, 7993d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 800437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (NULL == colors || colorCount < 1) { 801589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 802589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 803437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com EXPAND_1_COLOR(colorCount); 804589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 805437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 8063d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc_init(&desc, colors, pos, colorCount, SkShader::kClamp_TileMode, mapper, flags); 807437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com return SkNEW_ARGS(SkSweepGradient, (cx, cy, desc)); 808589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 809589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 810589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkGradientShader) 811589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkLinearGradient) 812589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkRadialGradient) 813589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSweepGradient) 814589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointRadialGradient) 815589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointConicalGradient) 816589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END 817d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 818d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com/////////////////////////////////////////////////////////////////////////////// 819d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 820cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#if SK_SUPPORT_GPU 821cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 822b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com#include "effects/GrTextureStripAtlas.h" 823c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com#include "GrTBackendEffectFactory.h" 824cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#include "SkGr.h" 825cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 8260707c29413a5a3cc1c2d14b8c65b3692af5c7411bsalomon@google.comGrGLGradientEffect::GrGLGradientEffect(const GrBackendEffectFactory& factory) 827b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com : INHERITED(factory) 82877af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com , fCachedYCoord(SK_ScalarMax) { 829d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 830d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 8310707c29413a5a3cc1c2d14b8c65b3692af5c7411bsalomon@google.comGrGLGradientEffect::~GrGLGradientEffect() { } 832d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 83382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comvoid GrGLGradientEffect::emitUniforms(GrGLShaderBuilder* builder, EffectKey key) { 83482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 83582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kTwo_ColorType == ColorTypeFromKey(key)) { // 2 Color case 83682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 83782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientStartColor"); 83882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 83982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientEndColor"); 8409a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 84182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else if (GrGradientEffect::kThree_ColorType == ColorTypeFromKey(key)){ // 3 Color Case 84282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 84382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientStartColor"); 84482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorMidUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 84582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientMidColor"); 84682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 84782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientEndColor"); 84882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 84982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { // if not a fast case 85082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fFSYUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 85182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kFloat_GrSLType, "GradientYCoordFS"); 85282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 85382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 85482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 85582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comstatic inline void set_color_uni(const GrGLUniformManager& uman, 85682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const GrGLUniformManager::UniformHandle uni, 85782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color) { 85882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com uman.set4f(uni, 85982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetR(*color) / 255.f, 86082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetG(*color) / 255.f, 86182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetB(*color) / 255.f, 86282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetA(*color) / 255.f); 86382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 86482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 86582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comstatic inline void set_mul_color_uni(const GrGLUniformManager& uman, 86682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const GrGLUniformManager::UniformHandle uni, 86782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color){ 86882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float a = SkColorGetA(*color) / 255.f; 86982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float aDiv255 = a / 255.f; 87082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com uman.set4f(uni, 87182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetR(*color) * aDiv255, 87282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetG(*color) * aDiv255, 87382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetB(*color) * aDiv255, 87482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com a); 875b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 876b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 877c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.comvoid GrGLGradientEffect::setData(const GrGLUniformManager& uman, 878c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrDrawEffect& drawEffect) { 87982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 880c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 881d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 88282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 88382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kTwo_ColorType == e.getColorType()){ 88482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 88582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 88682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorStartUni, e.getColors(0)); 88782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorEndUni, e.getColors(1)); 88882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 88982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorStartUni, e.getColors(0)); 89082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorEndUni, e.getColors(1)); 89182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 89282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 89382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else if (GrGradientEffect::kThree_ColorType == e.getColorType()){ 89482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 89582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 89682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorStartUni, e.getColors(0)); 89782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorMidUni, e.getColors(1)); 89882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorEndUni, e.getColors(2)); 89982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 90082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorStartUni, e.getColors(0)); 90182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorMidUni, e.getColors(1)); 90282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorEndUni, e.getColors(2)); 90382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 90482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 9059a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 90682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkScalar yCoord = e.getYCoord(); 90782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (yCoord != fCachedYCoord) { 90882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com uman.set1f(fFSYUni, yCoord); 90982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fCachedYCoord = yCoord; 91082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 911b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 912b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 913b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 91482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 91582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comGrGLEffect::EffectKey GrGLGradientEffect::GenBaseGradientKey(const GrDrawEffect& drawEffect) { 916c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 9179a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 91877af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com EffectKey key = 0; 91982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 92082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kTwo_ColorType == e.getColorType()) { 92182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kTwoColorKey; 92282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else if (GrGradientEffect::kThree_ColorType == e.getColorType()){ 92382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kThreeColorKey; 92482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 92582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 92682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 92782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kPremulBeforeInterpKey; 92882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 92982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 93082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return key; 931d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 932d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 93382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comvoid GrGLGradientEffect::emitColor(GrGLShaderBuilder* builder, 93482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* gradientTValue, 93582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com EffectKey key, 93682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* outputColor, 93782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* inputColor, 9383390b9ac9ad69a6e772c2b957d75d19611239025commit-bot@chromium.org const TextureSamplerArray& samplers) { 93982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kTwo_ColorType == ColorTypeFromKey(key)){ 94082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tvec4 colorTemp = mix(%s, %s, clamp(%s, 0.0, 1.0));\n", 94182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorStartUni).c_str(), 94282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str(), 94382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 94482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // Note that we could skip this step if both colors are known to be opaque. Two 94582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // considerations: 94682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The gradient SkShader reporting opaque is more restrictive than necessary in the two pt 94782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // case. Make sure the key reflects this optimization (and note that it can use the same 94882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // shader as thekBeforeIterp case). This same optimization applies to the 3 color case below. 94982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(key)) { 95082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 95182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 95282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 95382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkString output; 95482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\t%s = ", outputColor); 95582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrGLSLModulatef<4>(&output, inputColor, "colorTemp"); 95682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend(output.c_str()); 95782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend(";\n"); 95882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else if (GrGradientEffect::kThree_ColorType == ColorTypeFromKey(key)){ 95982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tfloat oneMinus2t = 1.0 - (2.0 * (%s));\n", 96082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 9610694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tvec4 colorTemp = clamp(oneMinus2t, 0.0, 1.0) * %s;\n", 9620694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorStartUni).c_str()); 9630694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org if (kTegra3_GrGLRenderer == builder->ctxInfo().renderer()) { 9640694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // The Tegra3 compiler will sometimes never return if we have 9650694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // min(abs(oneMinus2t), 1.0), or do the abs first in a separate expression. 9660694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppend("\tfloat minAbs = abs(oneMinus2t);\n"); 9670694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppend("\tminAbs = minAbs > 1.0 ? 1.0 : minAbs;\n"); 9680694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += (1.0 - minAbs) * %s;\n", 9690694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 9700694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } else { 9710694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += (1.0 - min(abs(oneMinus2t), 1.0)) * %s;\n", 9720694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 9730694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } 9740694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += clamp(-oneMinus2t, 0.0, 1.0) * %s;\n", 97582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str()); 97682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(key)) { 97782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 97882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 97934bcb9f80336fe0dc56ad5f67aeb0859bf84d92ebsalomon@google.com 98082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkString output; 98182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\t%s = ", outputColor); 98282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrGLSLModulatef<4>(&output, inputColor, "colorTemp"); 98382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend(output.c_str()); 98482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend(";\n"); 98582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 98682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tvec2 coord = vec2(%s, %s);\n", 98782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue, 98882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fFSYUni).c_str()); 98982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\t%s = ", outputColor); 99082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsAppendTextureLookupAndModulate(inputColor, 99182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com samplers[0], 99282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com "coord"); 99382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend(";\n"); 99482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 995d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 996d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 997d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com///////////////////////////////////////////////////////////////////// 998d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 999fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.comGrGradientEffect::GrGradientEffect(GrContext* ctx, 10001c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.com const SkGradientShaderBase& shader, 1001d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com const SkMatrix& matrix, 100250db75c871b203081a32190ab173f13c785a147fbsalomon@google.com SkShader::TileMode tileMode) { 1003d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1004371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com fIsOpaque = shader.isOpaque(); 1005371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com 100682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkShader::GradientInfo info; 100782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkScalar pos[3] = {0}; 100882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 100982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com info.fColorCount = 3; 101082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com info.fColors = &fColors[0]; 101182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com info.fColorOffsets = &pos[0]; 101282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com shader.asAGradient(&info); 101382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 101482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The two and three color specializations do not currently support tiling. 101582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com bool foundSpecialCase = false; 101682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (SkShader::kClamp_TileMode == info.fTileMode) { 101782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (2 == info.fColorCount) { 101882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fRow = -1; // flag for no atlas 101982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorType = kTwo_ColorType; 102082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com foundSpecialCase = true; 102182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else if (3 == info.fColorCount && 102282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com (SkScalarAbs(pos[1] - SK_ScalarHalf) < SK_Scalar1 / 1000)) { // 3 color symmetric 102382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fRow = -1; // flag for no atlas 102482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorType = kThree_ColorType; 102582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com foundSpecialCase = true; 102682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 102782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 102882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (foundSpecialCase) { 102982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (SkGradientShader::kInterpolateColorsInPremul_Flag & info.fGradientFlags) { 103082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 103182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 103282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kAfterInterp_PremulType; 103382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 103477af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix); 1035b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } else { 103682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // doesn't matter how this is set, just be consistent because it is part of the effect key. 103782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 103882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkBitmap bitmap; 103982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com shader.getGradientTableBitmap(&bitmap); 104082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorType = kTexture_ColorType; 10419a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 104282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureStripAtlas::Desc desc; 104382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fWidth = bitmap.width(); 104482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fHeight = 32; 104582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fRowHeight = bitmap.height(); 104682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fContext = ctx; 104782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fConfig = SkBitmapConfig2GrPixelConfig(bitmap.config()); 104882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fAtlas = GrTextureStripAtlas::GetAtlas(desc); 104982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkASSERT(NULL != fAtlas); 105082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 105182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // We always filter the gradient table. Each table is one row of a texture, always y-clamp. 105282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureParams params; 105382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setFilterMode(GrTextureParams::kBilerp_FilterMode); 105482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setTileModeX(tileMode); 105582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 105682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fRow = fAtlas->lockRow(bitmap); 105782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (-1 != fRow) { 105882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fYCoord = fAtlas->getYOffset(fRow) + SK_ScalarHalf * 105982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fAtlas->getVerticalScaleFactor(); 106077af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix, fAtlas->getTexture()); 106182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(fAtlas->getTexture(), params); 106282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 106382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTexture* texture = GrLockAndRefCachedBitmapTexture(ctx, bitmap, ¶ms); 106477af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix, texture); 106582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(texture, params); 106682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fYCoord = SK_ScalarHalf; 106782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 106882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // Unlock immediately, this is not great, but we don't have a way of 106982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // knowing when else to unlock it currently, so it may get purged from 107082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // the cache, but it'll still be ref'd until it's no longer being used. 107182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrUnlockAndUnrefCachedBitmapTexture(texture); 107282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 107382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com this->addTextureAccess(&fTextureAccess); 1074b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 107577af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com this->addCoordTransform(&fCoordTransform); 1076d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1077d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1078d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.comGrGradientEffect::~GrGradientEffect() { 1079b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com if (this->useAtlas()) { 1080b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com fAtlas->unlockRow(fRow); 1081b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 1082d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1083d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 10848a252f79629b189a03de22cd8ff0312c5bccedd1bsalomon@google.combool GrGradientEffect::onIsEqual(const GrEffect& effect) const { 10856340a41108633ac1ce5941e5cd30538630c4c55bbsalomon@google.com const GrGradientEffect& s = CastEffect<GrGradientEffect>(effect); 108682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 108782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (this->fColorType == s.getColorType()){ 108882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 108982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (kTwo_ColorType == fColorType) { 109082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 109182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1)) { 109282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 109382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 109482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else if (kThree_ColorType == fColorType) { 109582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 109682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1) || 109782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(2) != *s.getColors(2)) { 109882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 109982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1100c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } else { 1101c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com if (fYCoord != s.getYCoord()) { 1102c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com return false; 1103c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } 110482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 11059a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 110682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return fTextureAccess.getTexture() == s.fTextureAccess.getTexture() && 110782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.getParams().getTileModeX() == 110868b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com s.fTextureAccess.getParams().getTileModeX() && 110982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com this->useAtlas() == s.useAtlas() && 111077af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.getMatrix().cheapEqualTo(s.fCoordTransform.getMatrix()); 111182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 111282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 111382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 111468b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 111568b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 111668b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.comvoid GrGradientEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const { 1117b8eb2e89edf914caf5479baeffcb670d3e93f496bsalomon@google.com if (fIsOpaque && (kA_GrColorComponentFlag & *validFlags) && 0xff == GrColorUnpackA(*color)) { 1118b8eb2e89edf914caf5479baeffcb670d3e93f496bsalomon@google.com *validFlags = kA_GrColorComponentFlag; 111968b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } else { 112068b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com *validFlags = 0; 112168b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } 112268b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 112368b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 1124e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.orgint GrGradientEffect::RandomGradientParams(SkRandom* random, 1125d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkColor colors[], 1126d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkScalar** stops, 1127d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkShader::TileMode* tm) { 1128d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com int outColors = random->nextRangeU(1, kMaxRandomGradientColors); 1129d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1130d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com // if one color, omit stops, otherwise randomly decide whether or not to 1131d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com if (outColors == 1 || (outColors >= 2 && random->nextBool())) { 1132d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *stops = NULL; 1133d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1134d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 113581712883419f76e25d2ffec38a9438284a45a48dbsalomon@google.com SkScalar stop = 0.f; 1136d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com for (int i = 0; i < outColors; ++i) { 1137d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com colors[i] = random->nextU(); 1138d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com if (NULL != *stops) { 1139d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com (*stops)[i] = stop; 1140d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f; 1141d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1142d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1143d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount)); 1144d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1145d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com return outColors; 1146d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com} 1147d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1148cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#endif 1149