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 159c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.orgSkGradientShaderBase::SkGradientShaderBase(const Descriptor& desc, const SkMatrix* localMatrix) 169c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org : INHERITED(localMatrix) 179c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org{ 18437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT(desc.fCount > 1); 19589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 206c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org fGradFlags = SkToU8(desc.fGradFlags); 21589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 22437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT((unsigned)desc.fTileMode < SkShader::kTileModeCount); 23589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gTileProcs)); 24437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileMode = desc.fTileMode; 25437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileProc = gTileProcs[desc.fTileMode]; 26589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 27589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* Note: we let the caller skip the first and/or last position. 28589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. pos[0] = 0.3, pos[1] = 0.7 29589708bf7c706348b763e8277004cb160b202bdbrileya@google.com In these cases, we insert dummy entries to ensure that the final data 30589708bf7c706348b763e8277004cb160b202bdbrileya@google.com will be bracketed by [0, 1]. 31589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. our_pos[0] = 0, our_pos[1] = 0.3, our_pos[2] = 0.7, our_pos[3] = 1 32589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 33589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Thus colorCount (the caller's value, and fColorCount (our value) may 34589708bf7c706348b763e8277004cb160b202bdbrileya@google.com differ by up to 2. In the above example: 35589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorCount = 2 36589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount = 4 37589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 38437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fColorCount = desc.fCount; 39589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // check if we need to add in dummy start and/or end position/colors 40589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyFirst = false; 41589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyLast = false; 42437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 43437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyFirst = desc.fPos[0] != 0; 44437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyLast = desc.fPos[desc.fCount - 1] != SK_Scalar1; 45589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount += dummyFirst + dummyLast; 46589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 47589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 48589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > kColorStorageCount) { 49589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = sizeof(SkColor) + sizeof(Rec); 50589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = reinterpret_cast<SkColor*>( 51589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_malloc_throw(size * fColorCount)); 52589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 53589708bf7c706348b763e8277004cb160b202bdbrileya@google.com else { 54589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = fStorage; 55589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 56589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 57589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // Now copy over the colors, adding the dummies as needed 58589708bf7c706348b763e8277004cb160b202bdbrileya@google.com { 59589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor* origColors = fOrigColors; 60589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyFirst) { 61437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors++ = desc.fColors[0]; 62589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 63437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com memcpy(origColors, desc.fColors, desc.fCount * sizeof(SkColor)); 64589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyLast) { 65437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com origColors += desc.fCount; 66437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors = desc.fColors[desc.fCount - 1]; 67589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 68589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 69589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 70589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fRecs = (Rec*)(fOrigColors + fColorCount); 71589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 72589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 73589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = 0; 74589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // recs->fScale = 0; // unused; 75589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 76437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 77589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* We need to convert the user's array of relative positions into 78589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fixed-point positions and scale factors. We need these results 79589708bf7c706348b763e8277004cb160b202bdbrileya@google.com to be strictly monotonic (no two values equal or out of order). 80589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Hence this complex loop that just jams a zero for the scale 81589708bf7c706348b763e8277004cb160b202bdbrileya@google.com value if it sees a segment out of order, and it assures that 82589708bf7c706348b763e8277004cb160b202bdbrileya@google.com we start at 0 and end at 1.0 83589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 84589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed prev = 0; 85589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int startIndex = dummyFirst ? 0 : 1; 86437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com int count = desc.fCount + dummyLast; 87589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = startIndex; i < count; i++) { 88589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force the last value to be 1.0 89589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed curr; 90437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (i == desc.fCount) { // we're really at the dummyLast 91589708bf7c706348b763e8277004cb160b202bdbrileya@google.com curr = SK_Fixed1; 92589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 93437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com curr = SkScalarToFixed(desc.fPos[i]); 94589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 95589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // pin curr withing range 96589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (curr < 0) { 97589708bf7c706348b763e8277004cb160b202bdbrileya@google.com curr = 0; 98589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else if (curr > SK_Fixed1) { 99589708bf7c706348b763e8277004cb160b202bdbrileya@google.com curr = SK_Fixed1; 100589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 101589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = curr; 102589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (curr > prev) { 103589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = (1 << 24) / (curr - prev); 104589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 105589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = 0; // ignore this segment 106589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 107589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // get ready for the next value 108589708bf7c706348b763e8277004cb160b202bdbrileya@google.com prev = curr; 109589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 110589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 111589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { // assume even distribution 112437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed dp = SK_Fixed1 / (desc.fCount - 1); 113589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed p = dp; 114437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed scale = (desc.fCount - 1) << 8; // (1 << 24) / dp 11544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 1; i < desc.fCount - 1; i++) { 116589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = p; 117589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = scale; 118589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 119589708bf7c706348b763e8277004cb160b202bdbrileya@google.com p += dp; 120589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 12144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recs->fPos = SK_Fixed1; 122811f20de4d20b80ef40ff954acd1e816388b30becommit-bot@chromium.org recs->fScale = scale; 123589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 124589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 125589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->initCommon(); 126589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 127589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1283d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic uint32_t pack_mode_flags(SkShader::TileMode mode, uint32_t flags) { 1293d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkASSERT(0 == (flags >> 28)); 1303d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkASSERT(0 == ((uint32_t)mode >> 4)); 1313d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return (flags << 4) | mode; 1323d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 1333d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 1343d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic SkShader::TileMode unpack_mode(uint32_t packed) { 1353d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return (SkShader::TileMode)(packed & 0xF); 1363d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 1373d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 1383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic uint32_t unpack_flags(uint32_t packed) { 1393d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return packed >> 4; 1403d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 1413d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 1428b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgSkGradientShaderBase::SkGradientShaderBase(SkReadBuffer& buffer) : INHERITED(buffer) { 14383f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org if (buffer.isVersionLT(SkReadBuffer::kNoUnitMappers_Version)) { 14483f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org // skip the old SkUnitMapper slot 14583f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org buffer.skipFlattenable(); 14683f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org } 147589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 148c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com int colorCount = fColorCount = buffer.getArrayCount(); 149589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (colorCount > kColorStorageCount) { 150ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org size_t allocSize = (sizeof(SkColor) + sizeof(SkPMColor) + sizeof(Rec)) * colorCount; 151ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org if (buffer.validateAvailable(allocSize)) { 152ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org fOrigColors = reinterpret_cast<SkColor*>(sk_malloc_throw(allocSize)); 153ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org } else { 154ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org fOrigColors = NULL; 155ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org colorCount = fColorCount = 0; 156ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org } 157589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 158589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = fStorage; 159589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 160025128811219dc45fd99b6c4d1d14f833cf7a26ecommit-bot@chromium.org buffer.readColorArray(fOrigColors, colorCount); 161589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1623d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com { 1633d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t packed = buffer.readUInt(); 1643d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fGradFlags = SkToU8(unpack_flags(packed)); 1653d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fTileMode = unpack_mode(packed); 1663d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } 167589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fTileProc = gTileProcs[fTileMode]; 168589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fRecs = (Rec*)(fOrigColors + colorCount); 169589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (colorCount > 2) { 170589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 171589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs[0].fPos = 0; 172589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < colorCount; i++) { 173c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com recs[i].fPos = buffer.readInt(); 174c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com recs[i].fScale = buffer.readUInt(); 175589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 176589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 177589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer.readMatrix(&fPtsToUnit); 178589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->initCommon(); 179589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 180589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 181589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkGradientShaderBase::~SkGradientShaderBase() { 182589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fOrigColors != fStorage) { 183589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_free(fOrigColors); 184589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 185589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 186589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 187589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::initCommon() { 188589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned colorAlpha = 0xFF; 189589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 0; i < fColorCount; i++) { 190589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorAlpha &= SkColorGetA(fOrigColors[i]); 191589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 192589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorsAreOpaque = colorAlpha == 0xFF; 193589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 194589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1958b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgvoid SkGradientShaderBase::flatten(SkWriteBuffer& buffer) const { 196589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->INHERITED::flatten(buffer); 197c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.writeColorArray(fOrigColors, fColorCount); 1983d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com buffer.writeUInt(pack_mode_flags(fTileMode, fGradFlags)); 199589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 200589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 201589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < fColorCount; i++) { 202c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.writeInt(recs[i].fPos); 203c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.writeUInt(recs[i].fScale); 204589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 205589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 206589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer.writeMatrix(fPtsToUnit); 207589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 208589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 209996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.orgSkGradientShaderBase::GpuColorType SkGradientShaderBase::getGpuColorType(SkColor colors[3]) const { 210996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (fColorCount <= 3) { 211996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org memcpy(colors, fOrigColors, fColorCount * sizeof(SkColor)); 212996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 213996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org 214996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkShader::kClamp_TileMode == fTileMode) { 215996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (2 == fColorCount) { 216996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kTwo_GpuColorType; 217996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (3 == fColorCount && 218996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org (SkScalarAbs( 219996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org SkFixedToScalar(fRecs[1].fPos) - SK_ScalarHalf) < SK_Scalar1 / 1000)) { 220996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kThree_GpuColorType; 221996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 222996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 223996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kTexture_GpuColorType; 224996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org} 225996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org 22644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::FlipGradientColors(SkColor* colorDst, Rec* recDst, 22744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkColor* colorSrc, Rec* recSrc, 22844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int count) { 22944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorsTemp(count); 23044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < count; ++i) { 23144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int offset = count - i - 1; 23244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorsTemp[i] = colorSrc[offset]; 23344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 23444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (count > 2) { 23544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, Rec> recsTemp(count); 23644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < count; ++i) { 23744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int offset = count - i - 1; 23844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recsTemp[i].fPos = SK_Fixed1 - recSrc[offset].fPos; 23944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recsTemp[i].fScale = recSrc[offset].fScale; 24044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 24144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(recDst, recsTemp.get(), count * sizeof(Rec)); 24244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 24344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(colorDst, colorsTemp.get(), count * sizeof(SkColor)); 24444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org} 24544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 24644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::flipGradientColors() { 247d3b28e8847358460aeae745da44e474f6a7ab25dskia.committer@gmail.com FlipGradientColors(fOrigColors, fRecs, fOrigColors, fRecs, fColorCount); 24844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org} 24944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 250589708bf7c706348b763e8277004cb160b202bdbrileya@google.combool SkGradientShaderBase::isOpaque() const { 251589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return fColorsAreOpaque; 252589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 253589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 25487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderBaseContext::GradientShaderBaseContext( 255e901b6de3ef8dea842008a08fc81e92fb1478d61commit-bot@chromium.org const SkGradientShaderBase& shader, const ContextRec& rec) 256e901b6de3ef8dea842008a08fc81e92fb1478d61commit-bot@chromium.org : INHERITED(shader, rec) 25787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fCache(shader.refCache(getPaintAlpha())) 25887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org{ 2596e5671d8c9b2d9885e351b631b1dfbb4ed403789commit-bot@chromium.org const SkMatrix& inverse = this->getTotalInverse(); 260bc2f1dc85e458af7bdb87873e60207f9f7299e4acommit-bot@chromium.org 26187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fDstToIndex.setConcat(shader.fPtsToUnit, inverse); 26287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 263589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fDstToIndexProc = fDstToIndex.getMapXYProc(); 26487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fDstToIndexClass = (uint8_t)SkShader::Context::ComputeMatrixClass(fDstToIndex); 265589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 266589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // now convert our colors in to PMColors 267589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned paintAlpha = this->getPaintAlpha(); 268589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 269589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags = this->INHERITED::getFlags(); 27087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (shader.fColorsAreOpaque && paintAlpha == 0xFF) { 271589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kOpaqueAlpha_Flag; 272589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 273589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // we can do span16 as long as our individual colors are opaque, 274589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // regardless of the paint's alpha 27587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (shader.fColorsAreOpaque) { 276589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kHasSpan16_Flag; 277589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 27887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 279589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 28087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderCache::GradientShaderCache( 28187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org U8CPU alpha, const SkGradientShaderBase& shader) 28287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org : fCacheAlpha(alpha) 28387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fShader(shader) 28487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fCache16Inited(false) 28587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fCache32Inited(false) 28687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org{ 28787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // Only initialize the cache in getCache16/32. 28887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache16 = NULL; 28987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache32 = NULL; 29087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache16Storage = NULL; 29187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache32PixelRef = NULL; 292589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 293589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 29487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderCache::~GradientShaderCache() { 29587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org sk_free(fCache16Storage); 29687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkSafeUnref(fCache32PixelRef); 297589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 298589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 299589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define Fixed_To_Dot8(x) (((x) + 0x80) >> 8) 300589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 301589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/** We take the original colors, not our premultiplied PMColors, since we can 302589708bf7c706348b763e8277004cb160b202bdbrileya@google.com build a 16bit table as long as the original colors are opaque, even if the 303589708bf7c706348b763e8277004cb160b202bdbrileya@google.com paint specifies a non-opaque alpha. 304589708bf7c706348b763e8277004cb160b202bdbrileya@google.com*/ 30587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::Build16bitCache( 30687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org uint16_t cache[], SkColor c0, SkColor c1, int count) { 307589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 308589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c0) == 0xFF); 309589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c1) == 0xFF); 310589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 311589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed r = SkColorGetR(c0); 312589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed g = SkColorGetG(c0); 313589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed b = SkColorGetB(c0); 314589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 315589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dr = SkIntToFixed(SkColorGetR(c1) - r) / (count - 1); 316589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dg = SkIntToFixed(SkColorGetG(c1) - g) / (count - 1); 317589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed db = SkIntToFixed(SkColorGetB(c1) - b) / (count - 1); 318589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 319589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r = SkIntToFixed(r) + 0x8000; 320589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g = SkIntToFixed(g) + 0x8000; 321589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b = SkIntToFixed(b) + 0x8000; 322589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 323589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { 324589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned rr = r >> 16; 325589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned gg = g >> 16; 326589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned bb = b >> 16; 327589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[0] = SkPackRGB16(SkR32ToR16(rr), SkG32ToG16(gg), SkB32ToB16(bb)); 328589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[kCache16Count] = SkDitherPack888ToRGB16(rr, gg, bb); 329589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache += 1; 330589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r += dr; 331589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g += dg; 332589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b += db; 333589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (--count != 0); 334589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 335589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 3363d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com/* 3373d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * r,g,b used to be SkFixed, but on gcc (4.2.1 mac and 4.6.3 goobuntu) in 3383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * release builds, we saw a compiler error where the 0xFF parameter in 3393d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * SkPackARGB32() was being totally ignored whenever it was called with 3403d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * a non-zero add (e.g. 0x8000). 3413d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3423d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We found two work-arounds: 3433d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 1. change r,g,b to unsigned (or just one of them) 3443d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 2. change SkPackARGB32 to + its (a << SK_A32_SHIFT) value instead 3453d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * of using | 3463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3473d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We chose #1 just because it was more localized. 3483d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * See http://code.google.com/p/skia/issues/detail?id=1113 3493d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3503d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * The type SkUFixed encapsulate this need for unsigned, but logically Fixed. 3513d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com */ 3523d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comtypedef uint32_t SkUFixed; 3533d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 35487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::Build32bitCache( 35587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkPMColor cache[], SkColor c0, SkColor c1, 35687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int count, U8CPU paintAlpha, uint32_t gradFlags) { 357589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 358589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 359589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // need to apply paintAlpha to our two endpoints 3603d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a0 = SkMulDiv255Round(SkColorGetA(c0), paintAlpha); 3613d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a1 = SkMulDiv255Round(SkColorGetA(c1), paintAlpha); 362589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 363d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 3643d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const bool interpInPremul = SkToBool(gradFlags & 3653d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkGradientShader::kInterpolateColorsInPremul_Flag); 3663d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3673d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r0 = SkColorGetR(c0); 3683d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g0 = SkColorGetG(c0); 3693d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b0 = SkColorGetB(c0); 3703d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3713d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r1 = SkColorGetR(c1); 3723d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g1 = SkColorGetG(c1); 3733d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b1 = SkColorGetB(c1); 3743d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3753d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (interpInPremul) { 3763d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r0 = SkMulDiv255Round(r0, a0); 3773d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g0 = SkMulDiv255Round(g0, a0); 3783d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b0 = SkMulDiv255Round(b0, a0); 3793d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3803d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r1 = SkMulDiv255Round(r1, a1); 3813d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g1 = SkMulDiv255Round(g1, a1); 3823d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b1 = SkMulDiv255Round(b1, a1); 3833d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } 3843d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3853d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed da = SkIntToFixed(a1 - a0) / (count - 1); 3863d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dr = SkIntToFixed(r1 - r0) / (count - 1); 3873d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dg = SkIntToFixed(g1 - g0) / (count - 1); 3883d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed db = SkIntToFixed(b1 - b0) / (count - 1); 389589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 390d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* We pre-add 1/8 to avoid having to add this to our [0] value each time 391d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com in the loop. Without this, the bias for each would be 392d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 0x2000 0xA000 0xE000 0x6000 393d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com With this trick, we can add 0 for the first (no-op) and just adjust the 394d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com others. 395d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 3963d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed a = SkIntToFixed(a0) + 0x2000; 3973d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed r = SkIntToFixed(r0) + 0x2000; 3983d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed g = SkIntToFixed(g0) + 0x2000; 3993d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed b = SkIntToFixed(b0) + 0x2000; 400d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 401d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* 402d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Our dither-cell (spatially) is 403d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 0 2 404d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 3 1 405d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Where 406d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [0] -> [-1/8 ... 1/8 ) values near 0 407d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [1] -> [ 1/8 ... 3/8 ) values near 1/4 408d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [2] -> [ 3/8 ... 5/8 ) values near 1/2 409d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [3] -> [ 5/8 ... 7/8 ) values near 3/4 410d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 411589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 4123d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (0xFF == a0 && 0 == da) { 413d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 414d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPackARGB32(0xFF, (r + 0 ) >> 16, 415d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 416d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 417d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPackARGB32(0xFF, (r + 0x8000) >> 16, 418d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 419d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 420d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPackARGB32(0xFF, (r + 0xC000) >> 16, 421d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 422d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 423d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPackARGB32(0xFF, (r + 0x4000) >> 16, 424d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 425d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 426d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 427d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 428d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 429d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 430d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 4313d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else if (interpInPremul) { 4323d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com do { 4333d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*0] = SkPackARGB32((a + 0 ) >> 16, 4343d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0 ) >> 16, 4353d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0 ) >> 16, 4363d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0 ) >> 16); 4373d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*1] = SkPackARGB32((a + 0x8000) >> 16, 4383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x8000) >> 16, 4393d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x8000) >> 16, 4403d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x8000) >> 16); 4413d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*2] = SkPackARGB32((a + 0xC000) >> 16, 4423d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0xC000) >> 16, 4433d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0xC000) >> 16, 4443d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0xC000) >> 16); 4453d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*3] = SkPackARGB32((a + 0x4000) >> 16, 4463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x4000) >> 16, 4473d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x4000) >> 16, 4483d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x4000) >> 16); 4493d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache += 1; 4503d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com a += da; 4513d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r += dr; 4523d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g += dg; 4533d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b += db; 4543d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } while (--count != 0); 4553d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else { // interpolate in unpreml space 456d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 457d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPremultiplyARGBInline((a + 0 ) >> 16, 458d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0 ) >> 16, 459d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 460d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 461d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPremultiplyARGBInline((a + 0x8000) >> 16, 462d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x8000) >> 16, 463d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 464d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 465d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPremultiplyARGBInline((a + 0xC000) >> 16, 466d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0xC000) >> 16, 467d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 468d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 469d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPremultiplyARGBInline((a + 0x4000) >> 16, 470d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x4000) >> 16, 471d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 472d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 473d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 474d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com a += da; 475d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 476d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 477d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 478d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 479d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } 480589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 481589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 482589708bf7c706348b763e8277004cb160b202bdbrileya@google.comstatic inline int SkFixedToFFFF(SkFixed x) { 483589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT((unsigned)x <= SK_Fixed1); 484589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return x - (x >> 16); 485589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 486589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 48787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgconst uint16_t* SkGradientShaderBase::GradientShaderCache::getCache16() { 48887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkOnce(&fCache16Inited, &fCache16Mutex, SkGradientShaderBase::GradientShaderCache::initCache16, 48987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org this); 49087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(fCache16); 49187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org return fCache16; 49287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 493589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 49487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::initCache16(GradientShaderCache* cache) { 49587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // double the count for dither entries 49687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org const int entryCount = kCache16Count * 2; 49787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org const size_t allocSize = sizeof(uint16_t) * entryCount; 49887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 49987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(NULL == cache->fCache16Storage); 50087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache16Storage = (uint16_t*)sk_malloc_throw(allocSize); 50187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache16 = cache->fCache16Storage; 50287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (cache->fShader.fColorCount == 2) { 50387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build16bitCache(cache->fCache16, cache->fShader.fOrigColors[0], 50487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[1], kCache16Count); 50587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } else { 50687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Rec* rec = cache->fShader.fRecs; 50787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int prevIndex = 0; 50887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org for (int i = 1; i < cache->fShader.fColorCount; i++) { 50987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache16Shift; 51087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(nextIndex < kCache16Count); 51187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 51287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (nextIndex > prevIndex) 51387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build16bitCache(cache->fCache16 + prevIndex, cache->fShader.fOrigColors[i-1], 51487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[i], nextIndex - prevIndex + 1); 51587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org prevIndex = nextIndex; 516589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 51787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } 518589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 519589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 52087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgconst SkPMColor* SkGradientShaderBase::GradientShaderCache::getCache32() { 52187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkOnce(&fCache32Inited, &fCache32Mutex, SkGradientShaderBase::GradientShaderCache::initCache32, 52287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org this); 52387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(fCache32); 52487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org return fCache32; 52587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 526589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 52787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::initCache32(GradientShaderCache* cache) { 52887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkImageInfo info; 52987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org info.fWidth = kCache32Count; 53087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org info.fHeight = 4; // for our 4 dither rows 53187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org info.fAlphaType = kPremul_SkAlphaType; 53287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org info.fColorType = kN32_SkColorType; 53387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 53487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(NULL == cache->fCache32PixelRef); 53587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache32PixelRef = SkMallocPixelRef::NewAllocate(info, 0, NULL); 53687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache32 = (SkPMColor*)cache->fCache32PixelRef->getAddr(); 53787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (cache->fShader.fColorCount == 2) { 53887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build32bitCache(cache->fCache32, cache->fShader.fOrigColors[0], 53987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[1], kCache32Count, cache->fCacheAlpha, 54087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fGradFlags); 54187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } else { 54287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Rec* rec = cache->fShader.fRecs; 54387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int prevIndex = 0; 54487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org for (int i = 1; i < cache->fShader.fColorCount; i++) { 54587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache32Shift; 54687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(nextIndex < kCache32Count); 54787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 54887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (nextIndex > prevIndex) 54987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build32bitCache(cache->fCache32 + prevIndex, cache->fShader.fOrigColors[i-1], 55087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[i], nextIndex - prevIndex + 1, 55187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCacheAlpha, cache->fShader.fGradFlags); 55287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org prevIndex = nextIndex; 55353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 55487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } 55587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 55687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 55787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org/* 55887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org * The gradient holds a cache for the most recent value of alpha. Successive 55987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org * callers with the same alpha value will share the same cache. 56087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org */ 56187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderCache* SkGradientShaderBase::refCache(U8CPU alpha) const { 56287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkAutoMutexAcquire ama(fCacheMutex); 56387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (!fCache || fCache->getAlpha() != alpha) { 56487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache.reset(SkNEW_ARGS(GradientShaderCache, (alpha, *this))); 56587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } 56687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // Increment the ref counter inside the mutex to ensure the returned pointer is still valid. 56787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // Otherwise, the pointer may have been overwritten on a different thread before the object's 56887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // ref count was incremented. 56987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache.get()->ref(); 57087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org return fCache; 571589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 572589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 573589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/* 574589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * Because our caller might rebuild the same (logically the same) gradient 575589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * over and over, we'd like to return exactly the same "bitmap" if possible, 576589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * allowing the client to utilize a cache of our bitmap (e.g. with a GPU). 577589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * To do that, we maintain a private cache of built-bitmaps, based on our 578589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * colors and positions. Note: we don't try to flatten the fMapper, so if one 579589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * is present, we skip the cache for now. 580589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 5811c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.comvoid SkGradientShaderBase::getGradientTableBitmap(SkBitmap* bitmap) const { 582589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // our caller assumes no external alpha, so we ensure that our cache is 583589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // built with 0xFF 58487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkAutoTUnref<GradientShaderCache> cache(this->refCache(0xFF)); 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 62187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org (void)cache->getCache32(); 622a3264e53ee3f3c5d6a2c813df7e44b5b96d207f2commit-bot@chromium.org bitmap->setInfo(SkImageInfo::MakeN32Premul(kCache32Count, 1)); 62387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org bitmap->setPixelRef(cache->getCache32PixelRef()); 624589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 625589708bf7c706348b763e8277004cb160b202bdbrileya@google.com gCache->add(storage.get(), size, *bitmap); 626589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 627589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 628589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 62944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::commonAsAGradient(GradientInfo* info, bool flipGrad) const { 630589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info) { 631589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorCount >= fColorCount) { 63244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkColor* colorLoc; 63344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org Rec* recLoc; 63444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (flipGrad && (info->fColors || info->fColorOffsets)) { 63544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorStorage(fColorCount); 63644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, Rec> recStorage(fColorCount); 63744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorLoc = colorStorage.get(); 63844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recLoc = recStorage.get(); 63944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org FlipGradientColors(colorLoc, recLoc, fOrigColors, fRecs, fColorCount); 64044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 64144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorLoc = fOrigColors; 64244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recLoc = fRecs; 64344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 644589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColors) { 64544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(info->fColors, colorLoc, fColorCount * sizeof(SkColor)); 646589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 647589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorOffsets) { 648589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount == 2) { 649589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[0] = 0; 650589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[1] = SK_Scalar1; 651589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else if (fColorCount > 2) { 65276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 65344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org info->fColorOffsets[i] = SkFixedToScalar(recLoc[i].fPos); 65476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 655589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 656589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 657589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 658589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorCount = fColorCount; 659589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fTileMode = fTileMode; 6603d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com info->fGradientFlags = fGradFlags; 661589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 662589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 663589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 6640f10f7bf1fb43ca6346dc220a076773b1f19a367commit-bot@chromium.org#ifndef SK_IGNORE_TO_STRING 66576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.comvoid SkGradientShaderBase::toString(SkString* str) const { 66676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 66776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendf("%d colors: ", fColorCount); 66876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 66976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 67076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendHex(fOrigColors[i]); 67176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 67276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 67376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 67476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 67576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 67676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (fColorCount > 2) { 67776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" points: ("); 67876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 67976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendScalar(SkFixedToScalar(fRecs[i].fPos)); 68076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 68176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 68276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 68376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 68476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(")"); 68576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 68676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 68776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com static const char* gTileModeName[SkShader::kTileModeCount] = { 68876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com "clamp", "repeat", "mirror" 68976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com }; 69076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 69176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" "); 69276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(gTileModeName[fTileMode]); 69376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 69476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com this->INHERITED::toString(str); 69576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com} 69676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com#endif 69776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 698589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 699589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 700589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 701589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkEmptyShader.h" 702589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 703589708bf7c706348b763e8277004cb160b202bdbrileya@google.com// assumes colors is SkColor* and pos is SkScalar* 704589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define EXPAND_1_COLOR(count) \ 705589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor tmp[2]; \ 706589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { \ 707589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (1 == count) { \ 708589708bf7c706348b763e8277004cb160b202bdbrileya@google.com tmp[0] = tmp[1] = colors[0]; \ 709589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colors = tmp; \ 710589708bf7c706348b763e8277004cb160b202bdbrileya@google.com pos = NULL; \ 711589708bf7c706348b763e8277004cb160b202bdbrileya@google.com count = 2; \ 712589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } \ 713589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (0) 714589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 715437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.comstatic void desc_init(SkGradientShaderBase::Descriptor* desc, 716437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com const SkColor colors[], 717437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com const SkScalar pos[], int colorCount, 71883f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org SkShader::TileMode mode, uint32_t flags) { 7196c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fColors = colors; 7206c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fPos = pos; 7216c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fCount = colorCount; 7226c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fTileMode = mode; 7236c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fGradFlags = flags; 724437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com} 725437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com 726589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateLinear(const SkPoint pts[2], 727589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 728589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 729589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7309c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 7319c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 732589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (NULL == pts || NULL == colors || colorCount < 1) { 733589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 734589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 735589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 736589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 737437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 73883f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org desc_init(&desc, colors, pos, colorCount, mode, flags); 7399c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org return SkNEW_ARGS(SkLinearGradient, (pts, desc, localMatrix)); 740589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 741589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 742589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateRadial(const SkPoint& center, SkScalar radius, 743589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 744589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 745589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7469c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 7479c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 748589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (radius <= 0 || NULL == colors || colorCount < 1) { 749589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 750589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 751589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 752589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 753437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 75483f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org desc_init(&desc, colors, pos, colorCount, mode, flags); 7559c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org return SkNEW_ARGS(SkRadialGradient, (center, radius, desc, localMatrix)); 756589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 757589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 758589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointRadial(const SkPoint& start, 759589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar startRadius, 760589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkPoint& end, 761589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar endRadius, 762589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 763589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 764589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int colorCount, 765589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7669c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 7679c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 768589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 769589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 770589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 771589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 772fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com 773437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 77483f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org desc_init(&desc, colors, pos, colorCount, mode, flags); 775589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return SkNEW_ARGS(SkTwoPointRadialGradient, 7769c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org (start, startRadius, end, endRadius, desc, localMatrix)); 777589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 778589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 779589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointConical(const SkPoint& start, 7803d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar startRadius, 7813d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkPoint& end, 7823d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar endRadius, 7833d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkColor colors[], 7843d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkScalar pos[], 7853d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int colorCount, 7863d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkShader::TileMode mode, 7879c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 7889c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 789589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 790589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 791589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 792589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (start == end && startRadius == endRadius) { 793589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return SkNEW(SkEmptyShader); 794589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 79544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 7961ee7c6a18a511cde879941324f173ad4c8c123f8rileya@google.com EXPAND_1_COLOR(colorCount); 797589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 79844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org bool flipGradient = startRadius > endRadius; 79944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 800437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 80144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 80244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (!flipGradient) { 80383f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org desc_init(&desc, colors, pos, colorCount, mode, flags); 80444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org return SkNEW_ARGS(SkTwoPointConicalGradient, 8059c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org (start, startRadius, end, endRadius, flipGradient, desc, localMatrix)); 80644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 80744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorsNew(colorCount); 80844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkScalar> posNew(colorCount); 80944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < colorCount; ++i) { 81044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorsNew[i] = colors[colorCount - i - 1]; 81144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 81244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 81344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (pos) { 81444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < colorCount; ++i) { 81544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org posNew[i] = 1 - pos[colorCount - i - 1]; 81644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 81783f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org desc_init(&desc, colorsNew.get(), posNew.get(), colorCount, mode, flags); 81844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 81983f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org desc_init(&desc, colorsNew.get(), NULL, colorCount, mode, flags); 82044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 82144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 82244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org return SkNEW_ARGS(SkTwoPointConicalGradient, 8239c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org (end, endRadius, start, startRadius, flipGradient, desc, localMatrix)); 82444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 825589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 826589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 827589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateSweep(SkScalar cx, SkScalar cy, 828589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 829589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 83083f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org int colorCount, 8319c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 8329c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 833437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (NULL == colors || colorCount < 1) { 834589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 835589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 836437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com EXPAND_1_COLOR(colorCount); 837589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 838437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 83983f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org desc_init(&desc, colors, pos, colorCount, SkShader::kClamp_TileMode, flags); 8409c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org return SkNEW_ARGS(SkSweepGradient, (cx, cy, desc, localMatrix)); 841589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 842589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 843589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkGradientShader) 844589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkLinearGradient) 845589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkRadialGradient) 846589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSweepGradient) 847589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointRadialGradient) 848589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointConicalGradient) 849589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END 850d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 851d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com/////////////////////////////////////////////////////////////////////////////// 852d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 853cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#if SK_SUPPORT_GPU 854cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 855b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com#include "effects/GrTextureStripAtlas.h" 856c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com#include "GrTBackendEffectFactory.h" 857cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#include "SkGr.h" 858cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 8590707c29413a5a3cc1c2d14b8c65b3692af5c7411bsalomon@google.comGrGLGradientEffect::GrGLGradientEffect(const GrBackendEffectFactory& factory) 860b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com : INHERITED(factory) 86177af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com , fCachedYCoord(SK_ScalarMax) { 862d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 863d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 8640707c29413a5a3cc1c2d14b8c65b3692af5c7411bsalomon@google.comGrGLGradientEffect::~GrGLGradientEffect() { } 865d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 86682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comvoid GrGLGradientEffect::emitUniforms(GrGLShaderBuilder* builder, EffectKey key) { 86782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 868996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == ColorTypeFromKey(key)) { // 2 Color case 86982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 87082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientStartColor"); 87182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 87282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientEndColor"); 8739a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 874996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == ColorTypeFromKey(key)){ // 3 Color Case 87582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 87682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientStartColor"); 87782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorMidUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 87882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientMidColor"); 87982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 88082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientEndColor"); 88182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 88282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { // if not a fast case 88382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fFSYUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 88482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kFloat_GrSLType, "GradientYCoordFS"); 88582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 88682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 88782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 88882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comstatic inline void set_color_uni(const GrGLUniformManager& uman, 88982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const GrGLUniformManager::UniformHandle uni, 89082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color) { 89182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com uman.set4f(uni, 89282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetR(*color) / 255.f, 89382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetG(*color) / 255.f, 89482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetB(*color) / 255.f, 89582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetA(*color) / 255.f); 89682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 89782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 89882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comstatic inline void set_mul_color_uni(const GrGLUniformManager& uman, 89982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const GrGLUniformManager::UniformHandle uni, 90082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color){ 90182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float a = SkColorGetA(*color) / 255.f; 90282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float aDiv255 = a / 255.f; 90382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com uman.set4f(uni, 90482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetR(*color) * aDiv255, 90582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetG(*color) * aDiv255, 90682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetB(*color) * aDiv255, 90782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com a); 908b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 909b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 910c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.comvoid GrGLGradientEffect::setData(const GrGLUniformManager& uman, 911c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrDrawEffect& drawEffect) { 91282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 913c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 914d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 91582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 916996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == e.getColorType()){ 91782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 91882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 91982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorStartUni, e.getColors(0)); 92082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorEndUni, e.getColors(1)); 92182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 92282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorStartUni, e.getColors(0)); 92382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorEndUni, e.getColors(1)); 92482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 92582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 926996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == e.getColorType()){ 92782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 92882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 92982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorStartUni, e.getColors(0)); 93082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorMidUni, e.getColors(1)); 93182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorEndUni, e.getColors(2)); 93282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 93382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorStartUni, e.getColors(0)); 93482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorMidUni, e.getColors(1)); 93582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorEndUni, e.getColors(2)); 93682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 93782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 9389a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 93982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkScalar yCoord = e.getYCoord(); 94082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (yCoord != fCachedYCoord) { 94182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com uman.set1f(fFSYUni, yCoord); 94282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fCachedYCoord = yCoord; 94382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 944b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 945b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 946b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 94782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 94882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comGrGLEffect::EffectKey GrGLGradientEffect::GenBaseGradientKey(const GrDrawEffect& drawEffect) { 949c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 9509a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 95177af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com EffectKey key = 0; 95282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 953996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == e.getColorType()) { 95482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kTwoColorKey; 955996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == e.getColorType()){ 95682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kThreeColorKey; 95782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 95882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 95982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 96082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kPremulBeforeInterpKey; 96182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 96282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 96382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return key; 964d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 965d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 96682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comvoid GrGLGradientEffect::emitColor(GrGLShaderBuilder* builder, 96782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* gradientTValue, 96882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com EffectKey key, 96982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* outputColor, 97082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* inputColor, 9713390b9ac9ad69a6e772c2b957d75d19611239025commit-bot@chromium.org const TextureSamplerArray& samplers) { 972996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == ColorTypeFromKey(key)){ 97382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tvec4 colorTemp = mix(%s, %s, clamp(%s, 0.0, 1.0));\n", 97482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorStartUni).c_str(), 97582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str(), 97682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 97782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // Note that we could skip this step if both colors are known to be opaque. Two 97882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // considerations: 97982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The gradient SkShader reporting opaque is more restrictive than necessary in the two pt 98082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // case. Make sure the key reflects this optimization (and note that it can use the same 98182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // shader as thekBeforeIterp case). This same optimization applies to the 3 color case below. 98282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(key)) { 98382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 98482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 98582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 986824c346b6e0e114063c1a8ad4ba7c3a669ee2cffcommit-bot@chromium.org builder->fsCodeAppendf("\t%s = %s;\n", outputColor, 987a34995e18b1f0a7d8c9f23451718bb30ff0105b0commit-bot@chromium.org (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 988996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == ColorTypeFromKey(key)){ 98982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tfloat oneMinus2t = 1.0 - (2.0 * (%s));\n", 99082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 9910694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tvec4 colorTemp = clamp(oneMinus2t, 0.0, 1.0) * %s;\n", 9920694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorStartUni).c_str()); 9930694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org if (kTegra3_GrGLRenderer == builder->ctxInfo().renderer()) { 9940694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // The Tegra3 compiler will sometimes never return if we have 9950694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // min(abs(oneMinus2t), 1.0), or do the abs first in a separate expression. 9960694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppend("\tfloat minAbs = abs(oneMinus2t);\n"); 9970694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppend("\tminAbs = minAbs > 1.0 ? 1.0 : minAbs;\n"); 9980694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += (1.0 - minAbs) * %s;\n", 9990694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 10000694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } else { 10010694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += (1.0 - min(abs(oneMinus2t), 1.0)) * %s;\n", 10020694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 10030694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } 10040694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += clamp(-oneMinus2t, 0.0, 1.0) * %s;\n", 100582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str()); 100682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(key)) { 100782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 100882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 100934bcb9f80336fe0dc56ad5f67aeb0859bf84d92ebsalomon@google.com 1010824c346b6e0e114063c1a8ad4ba7c3a669ee2cffcommit-bot@chromium.org builder->fsCodeAppendf("\t%s = %s;\n", outputColor, 1011a34995e18b1f0a7d8c9f23451718bb30ff0105b0commit-bot@chromium.org (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 101282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 101382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tvec2 coord = vec2(%s, %s);\n", 101482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue, 101582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fFSYUni).c_str()); 101682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\t%s = ", outputColor); 101782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsAppendTextureLookupAndModulate(inputColor, 101882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com samplers[0], 101982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com "coord"); 102082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend(";\n"); 102182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1022d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1023d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1024d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com///////////////////////////////////////////////////////////////////// 1025d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1026fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.comGrGradientEffect::GrGradientEffect(GrContext* ctx, 10271c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.com const SkGradientShaderBase& shader, 1028d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com const SkMatrix& matrix, 102950db75c871b203081a32190ab173f13c785a147fbsalomon@google.com SkShader::TileMode tileMode) { 1030d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1031371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com fIsOpaque = shader.isOpaque(); 1032371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com 1033996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org fColorType = shader.getGpuColorType(&fColors[0]); 103482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 103582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The two and three color specializations do not currently support tiling. 1036996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == fColorType || 1037996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org SkGradientShaderBase::kThree_GpuColorType == fColorType) { 1038996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org fRow = -1; 10398a777a5e6ad081f54ec169dcf714343c38517161skia.committer@gmail.com 10406c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org if (SkGradientShader::kInterpolateColorsInPremul_Flag & shader.getGradFlags()) { 104182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 104282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 104382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kAfterInterp_PremulType; 104482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 104577af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix); 1046b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } else { 104782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // doesn't matter how this is set, just be consistent because it is part of the effect key. 104882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 104982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkBitmap bitmap; 105082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com shader.getGradientTableBitmap(&bitmap); 10519a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 105282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureStripAtlas::Desc desc; 105382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fWidth = bitmap.width(); 105482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fHeight = 32; 105582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fRowHeight = bitmap.height(); 105682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fContext = ctx; 10573adcc3403377c0b9a7afde6db8e0432325413a10commit-bot@chromium.org desc.fConfig = SkImageInfo2GrPixelConfig(bitmap.info()); 105882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fAtlas = GrTextureStripAtlas::GetAtlas(desc); 105982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkASSERT(NULL != fAtlas); 106082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 106182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // We always filter the gradient table. Each table is one row of a texture, always y-clamp. 106282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureParams params; 106382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setFilterMode(GrTextureParams::kBilerp_FilterMode); 106482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setTileModeX(tileMode); 106582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 106682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fRow = fAtlas->lockRow(bitmap); 106782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (-1 != fRow) { 106882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fYCoord = fAtlas->getYOffset(fRow) + SK_ScalarHalf * 106982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fAtlas->getVerticalScaleFactor(); 107077af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix, fAtlas->getTexture()); 107182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(fAtlas->getTexture(), params); 107282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 107382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTexture* texture = GrLockAndRefCachedBitmapTexture(ctx, bitmap, ¶ms); 107477af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix, texture); 107582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(texture, params); 107682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fYCoord = SK_ScalarHalf; 107782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 107882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // Unlock immediately, this is not great, but we don't have a way of 107982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // knowing when else to unlock it currently, so it may get purged from 108082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // the cache, but it'll still be ref'd until it's no longer being used. 108182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrUnlockAndUnrefCachedBitmapTexture(texture); 108282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 108382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com this->addTextureAccess(&fTextureAccess); 1084b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 108577af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com this->addCoordTransform(&fCoordTransform); 1086d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1087d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1088d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.comGrGradientEffect::~GrGradientEffect() { 1089b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com if (this->useAtlas()) { 1090b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com fAtlas->unlockRow(fRow); 1091b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 1092d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1093d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 10948a252f79629b189a03de22cd8ff0312c5bccedd1bsalomon@google.combool GrGradientEffect::onIsEqual(const GrEffect& effect) const { 10956340a41108633ac1ce5941e5cd30538630c4c55bbsalomon@google.com const GrGradientEffect& s = CastEffect<GrGradientEffect>(effect); 109682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 109782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (this->fColorType == s.getColorType()){ 109882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 1099996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == fColorType) { 110082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 110182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1)) { 110282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 110382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1104996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == fColorType) { 110582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 110682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1) || 110782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(2) != *s.getColors(2)) { 110882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 110982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1110c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } else { 1111c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com if (fYCoord != s.getYCoord()) { 1112c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com return false; 1113c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } 111482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 11159a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 111682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return fTextureAccess.getTexture() == s.fTextureAccess.getTexture() && 111782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.getParams().getTileModeX() == 111868b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com s.fTextureAccess.getParams().getTileModeX() && 111982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com this->useAtlas() == s.useAtlas() && 112077af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.getMatrix().cheapEqualTo(s.fCoordTransform.getMatrix()); 112182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 112282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 112382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 112468b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 112568b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 112668b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.comvoid GrGradientEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const { 1127b8eb2e89edf914caf5479baeffcb670d3e93f496bsalomon@google.com if (fIsOpaque && (kA_GrColorComponentFlag & *validFlags) && 0xff == GrColorUnpackA(*color)) { 1128b8eb2e89edf914caf5479baeffcb670d3e93f496bsalomon@google.com *validFlags = kA_GrColorComponentFlag; 112968b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } else { 113068b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com *validFlags = 0; 113168b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } 113268b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 113368b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 1134e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.orgint GrGradientEffect::RandomGradientParams(SkRandom* random, 1135d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkColor colors[], 1136d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkScalar** stops, 1137d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkShader::TileMode* tm) { 1138d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com int outColors = random->nextRangeU(1, kMaxRandomGradientColors); 1139d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1140d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com // if one color, omit stops, otherwise randomly decide whether or not to 1141d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com if (outColors == 1 || (outColors >= 2 && random->nextBool())) { 1142d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *stops = NULL; 1143d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1144d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 114581712883419f76e25d2ffec38a9438284a45a48dbsalomon@google.com SkScalar stop = 0.f; 1146d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com for (int i = 0; i < outColors; ++i) { 1147d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com colors[i] = random->nextU(); 1148d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com if (NULL != *stops) { 1149d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com (*stops)[i] = stop; 1150d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f; 1151d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1152d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1153d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount)); 1154d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1155d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com return outColors; 1156d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com} 1157d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1158cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#endif 1159