SkGradientShader.cpp revision d3b28e8847358460aeae745da44e474f6a7ab25d
1589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/* 2589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * Copyright 2006 The Android Open Source Project 3589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * 4589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * Use of this source code is governed by a BSD-style license that can be 5589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * found in the LICENSE file. 6589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 7589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 8589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkGradientShaderPriv.h" 9589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkLinearGradient.h" 10589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkRadialGradient.h" 11589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkTwoPointRadialGradient.h" 12589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkTwoPointConicalGradient.h" 13589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkSweepGradient.h" 14589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 15437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.comSkGradientShaderBase::SkGradientShaderBase(const Descriptor& desc) { 16437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT(desc.fCount > 1); 17589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCacheAlpha = 256; // init to a value that paint.getAlpha() can't return 1953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org 20437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fMapper = desc.fMapper; 21437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkSafeRef(fMapper); 223d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fGradFlags = SkToU8(desc.fFlags); 23589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 24437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT((unsigned)desc.fTileMode < SkShader::kTileModeCount); 25589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gTileProcs)); 26437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileMode = desc.fTileMode; 27437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileProc = gTileProcs[desc.fTileMode]; 28589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 2953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache16 = fCache16Storage = NULL; 3053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32 = NULL; 3153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32PixelRef = NULL; 3253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org 33589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* Note: we let the caller skip the first and/or last position. 34589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. pos[0] = 0.3, pos[1] = 0.7 35589708bf7c706348b763e8277004cb160b202bdbrileya@google.com In these cases, we insert dummy entries to ensure that the final data 36589708bf7c706348b763e8277004cb160b202bdbrileya@google.com will be bracketed by [0, 1]. 37589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. our_pos[0] = 0, our_pos[1] = 0.3, our_pos[2] = 0.7, our_pos[3] = 1 38589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 39589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Thus colorCount (the caller's value, and fColorCount (our value) may 40589708bf7c706348b763e8277004cb160b202bdbrileya@google.com differ by up to 2. In the above example: 41589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorCount = 2 42589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount = 4 43589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 44437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fColorCount = desc.fCount; 45589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // check if we need to add in dummy start and/or end position/colors 46589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyFirst = false; 47589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyLast = false; 48437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 49437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyFirst = desc.fPos[0] != 0; 50437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyLast = desc.fPos[desc.fCount - 1] != SK_Scalar1; 51589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount += dummyFirst + dummyLast; 52589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 53589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 54589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > kColorStorageCount) { 55589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = sizeof(SkColor) + sizeof(Rec); 56589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = reinterpret_cast<SkColor*>( 57589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_malloc_throw(size * fColorCount)); 58589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 59589708bf7c706348b763e8277004cb160b202bdbrileya@google.com else { 60589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = fStorage; 61589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 62589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 63589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // Now copy over the colors, adding the dummies as needed 64589708bf7c706348b763e8277004cb160b202bdbrileya@google.com { 65589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor* origColors = fOrigColors; 66589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyFirst) { 67437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors++ = desc.fColors[0]; 68589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 69437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com memcpy(origColors, desc.fColors, desc.fCount * sizeof(SkColor)); 70589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyLast) { 71437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com origColors += desc.fCount; 72437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors = desc.fColors[desc.fCount - 1]; 73589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 74589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 75589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 76589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fRecs = (Rec*)(fOrigColors + fColorCount); 77589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 78589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 79589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = 0; 80589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // recs->fScale = 0; // unused; 81589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 82437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 83589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* We need to convert the user's array of relative positions into 84589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fixed-point positions and scale factors. We need these results 85589708bf7c706348b763e8277004cb160b202bdbrileya@google.com to be strictly monotonic (no two values equal or out of order). 86589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Hence this complex loop that just jams a zero for the scale 87589708bf7c706348b763e8277004cb160b202bdbrileya@google.com value if it sees a segment out of order, and it assures that 88589708bf7c706348b763e8277004cb160b202bdbrileya@google.com we start at 0 and end at 1.0 89589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 90589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed prev = 0; 91589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int startIndex = dummyFirst ? 0 : 1; 92437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com int count = desc.fCount + dummyLast; 93589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = startIndex; i < count; i++) { 94589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force the last value to be 1.0 95589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed curr; 96437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (i == desc.fCount) { // we're really at the dummyLast 97589708bf7c706348b763e8277004cb160b202bdbrileya@google.com curr = SK_Fixed1; 98589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 99437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com curr = SkScalarToFixed(desc.fPos[i]); 100589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 101589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // pin curr withing range 102589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (curr < 0) { 103589708bf7c706348b763e8277004cb160b202bdbrileya@google.com curr = 0; 104589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else if (curr > SK_Fixed1) { 105589708bf7c706348b763e8277004cb160b202bdbrileya@google.com curr = SK_Fixed1; 106589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 107589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = curr; 108589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (curr > prev) { 109589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = (1 << 24) / (curr - prev); 110589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 111589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = 0; // ignore this segment 112589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 113589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // get ready for the next value 114589708bf7c706348b763e8277004cb160b202bdbrileya@google.com prev = curr; 115589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 116589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 117589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { // assume even distribution 118437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed dp = SK_Fixed1 / (desc.fCount - 1); 119589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed p = dp; 120437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed scale = (desc.fCount - 1) << 8; // (1 << 24) / dp 12144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 1; i < desc.fCount - 1; i++) { 122589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = p; 123589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = scale; 124589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 125589708bf7c706348b763e8277004cb160b202bdbrileya@google.com p += dp; 126589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 12744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recs->fPos = SK_Fixed1; 128811f20de4d20b80ef40ff954acd1e816388b30becommit-bot@chromium.org recs->fScale = scale; 129589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 130589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 131589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->initCommon(); 132589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 133589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1343d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic uint32_t pack_mode_flags(SkShader::TileMode mode, uint32_t flags) { 1353d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkASSERT(0 == (flags >> 28)); 1363d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkASSERT(0 == ((uint32_t)mode >> 4)); 1373d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return (flags << 4) | mode; 1383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 1393d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 1403d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic SkShader::TileMode unpack_mode(uint32_t packed) { 1413d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return (SkShader::TileMode)(packed & 0xF); 1423d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 1433d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 1443d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic uint32_t unpack_flags(uint32_t packed) { 1453d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return packed >> 4; 1463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 1473d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 1488b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgSkGradientShaderBase::SkGradientShaderBase(SkReadBuffer& buffer) : INHERITED(buffer) { 14953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCacheAlpha = 256; 15053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org 151353482251e61971a8cf3a60bbb6910f482be634freed@google.com fMapper = buffer.readUnitMapper(); 152589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 15353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache16 = fCache16Storage = NULL; 15453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32 = NULL; 15553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32PixelRef = NULL; 15653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org 157c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com int colorCount = fColorCount = buffer.getArrayCount(); 158589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (colorCount > kColorStorageCount) { 159ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org size_t allocSize = (sizeof(SkColor) + sizeof(SkPMColor) + sizeof(Rec)) * colorCount; 160ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org if (buffer.validateAvailable(allocSize)) { 161ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org fOrigColors = reinterpret_cast<SkColor*>(sk_malloc_throw(allocSize)); 162ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org } else { 163ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org fOrigColors = NULL; 164ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org colorCount = fColorCount = 0; 165ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org } 166589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 167589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = fStorage; 168589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 169025128811219dc45fd99b6c4d1d14f833cf7a26ecommit-bot@chromium.org buffer.readColorArray(fOrigColors, colorCount); 170589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1713d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com { 1723d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t packed = buffer.readUInt(); 1733d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fGradFlags = SkToU8(unpack_flags(packed)); 1743d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fTileMode = unpack_mode(packed); 1753d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } 176589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fTileProc = gTileProcs[fTileMode]; 177589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fRecs = (Rec*)(fOrigColors + colorCount); 178589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (colorCount > 2) { 179589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 180589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs[0].fPos = 0; 181589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < colorCount; i++) { 182c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com recs[i].fPos = buffer.readInt(); 183c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com recs[i].fScale = buffer.readUInt(); 184589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 185589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 186589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer.readMatrix(&fPtsToUnit); 187589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->initCommon(); 188589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 189589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 190589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkGradientShaderBase::~SkGradientShaderBase() { 19153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fCache16Storage) { 19253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org sk_free(fCache16Storage); 19353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 19453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org SkSafeUnref(fCache32PixelRef); 195589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fOrigColors != fStorage) { 196589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_free(fOrigColors); 197589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 198589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkSafeUnref(fMapper); 199589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 200589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 201589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::initCommon() { 20253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fFlags = 0; 203589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned colorAlpha = 0xFF; 204589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 0; i < fColorCount; i++) { 205589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorAlpha &= SkColorGetA(fOrigColors[i]); 206589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 207589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorsAreOpaque = colorAlpha == 0xFF; 208589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 209589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 2108b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgvoid SkGradientShaderBase::flatten(SkWriteBuffer& buffer) const { 211589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->INHERITED::flatten(buffer); 212589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer.writeFlattenable(fMapper); 213c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.writeColorArray(fOrigColors, fColorCount); 2143d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com buffer.writeUInt(pack_mode_flags(fTileMode, fGradFlags)); 215589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 216589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 217589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < fColorCount; i++) { 218c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.writeInt(recs[i].fPos); 219c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com buffer.writeUInt(recs[i].fScale); 220589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 221589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 222589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer.writeMatrix(fPtsToUnit); 223589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 224589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 225996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.orgSkGradientShaderBase::GpuColorType SkGradientShaderBase::getGpuColorType(SkColor colors[3]) const { 226996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (fColorCount <= 3) { 227996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org memcpy(colors, fOrigColors, fColorCount * sizeof(SkColor)); 228996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 229996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org 230996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkShader::kClamp_TileMode == fTileMode) { 231996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (2 == fColorCount) { 232996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kTwo_GpuColorType; 233996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (3 == fColorCount && 234996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org (SkScalarAbs( 235996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org SkFixedToScalar(fRecs[1].fPos) - SK_ScalarHalf) < SK_Scalar1 / 1000)) { 236996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kThree_GpuColorType; 237996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 238996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 239996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kTexture_GpuColorType; 240996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org} 241996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org 24244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::FlipGradientColors(SkColor* colorDst, Rec* recDst, 24344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkColor* colorSrc, Rec* recSrc, 24444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int count) { 24544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorsTemp(count); 24644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < count; ++i) { 24744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int offset = count - i - 1; 24844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorsTemp[i] = colorSrc[offset]; 24944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 25044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (count > 2) { 25144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, Rec> recsTemp(count); 25244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < count; ++i) { 25344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int offset = count - i - 1; 25444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recsTemp[i].fPos = SK_Fixed1 - recSrc[offset].fPos; 25544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recsTemp[i].fScale = recSrc[offset].fScale; 25644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 25744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(recDst, recsTemp.get(), count * sizeof(Rec)); 25844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 25944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(colorDst, colorsTemp.get(), count * sizeof(SkColor)); 26044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org} 26144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 26244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::flipGradientColors() { 263d3b28e8847358460aeae745da44e474f6a7ab25dskia.committer@gmail.com FlipGradientColors(fOrigColors, fRecs, fOrigColors, fRecs, fColorCount); 26444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org} 26544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 266589708bf7c706348b763e8277004cb160b202bdbrileya@google.combool SkGradientShaderBase::isOpaque() const { 267589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return fColorsAreOpaque; 268589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 269589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 27053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.orgbool SkGradientShaderBase::setContext(const SkBitmap& device, 27153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org const SkPaint& paint, 27253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org const SkMatrix& matrix) { 27353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (!this->INHERITED::setContext(device, paint, matrix)) { 27453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org return false; 27553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 276589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 27753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org const SkMatrix& inverse = this->getTotalInverse(); 278001f4ed2fb62ecdc98ce2884d925de11b7516d23commit-bot@chromium.org 27953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fDstToIndex.setConcat(fPtsToUnit, inverse); 280589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fDstToIndexProc = fDstToIndex.getMapXYProc(); 28153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fDstToIndexClass = (uint8_t)SkShader::ComputeMatrixClass(fDstToIndex); 282589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 283589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // now convert our colors in to PMColors 284589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned paintAlpha = this->getPaintAlpha(); 285589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 286589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags = this->INHERITED::getFlags(); 28753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fColorsAreOpaque && paintAlpha == 0xFF) { 288589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kOpaqueAlpha_Flag; 289589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 290589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // we can do span16 as long as our individual colors are opaque, 291589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // regardless of the paint's alpha 29253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fColorsAreOpaque) { 293589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kHasSpan16_Flag; 294589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 295589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 29653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org this->setCacheAlpha(paintAlpha); 29753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org return true; 298589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 299589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 30053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.orgvoid SkGradientShaderBase::setCacheAlpha(U8CPU alpha) const { 30153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org // if the new alpha differs from the previous time we were called, inval our cache 30253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org // this will trigger the cache to be rebuilt. 30353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org // we don't care about the first time, since the cache ptrs will already be NULL 30453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fCacheAlpha != alpha) { 30553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache16 = NULL; // inval the cache 30653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32 = NULL; // inval the cache 30753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCacheAlpha = alpha; // record the new alpha 30853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org // inform our subclasses 30953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fCache32PixelRef) { 31053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32PixelRef->notifyPixelsChanged(); 31153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 31253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 313589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 314589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 315589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define Fixed_To_Dot8(x) (((x) + 0x80) >> 8) 316589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 317589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/** We take the original colors, not our premultiplied PMColors, since we can 318589708bf7c706348b763e8277004cb160b202bdbrileya@google.com build a 16bit table as long as the original colors are opaque, even if the 319589708bf7c706348b763e8277004cb160b202bdbrileya@google.com paint specifies a non-opaque alpha. 320589708bf7c706348b763e8277004cb160b202bdbrileya@google.com*/ 32153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.orgvoid SkGradientShaderBase::Build16bitCache(uint16_t cache[], SkColor c0, SkColor c1, 32253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org int count) { 323589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 324589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c0) == 0xFF); 325589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c1) == 0xFF); 326589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 327589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed r = SkColorGetR(c0); 328589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed g = SkColorGetG(c0); 329589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed b = SkColorGetB(c0); 330589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 331589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dr = SkIntToFixed(SkColorGetR(c1) - r) / (count - 1); 332589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dg = SkIntToFixed(SkColorGetG(c1) - g) / (count - 1); 333589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed db = SkIntToFixed(SkColorGetB(c1) - b) / (count - 1); 334589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 335589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r = SkIntToFixed(r) + 0x8000; 336589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g = SkIntToFixed(g) + 0x8000; 337589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b = SkIntToFixed(b) + 0x8000; 338589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 339589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { 340589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned rr = r >> 16; 341589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned gg = g >> 16; 342589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned bb = b >> 16; 343589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[0] = SkPackRGB16(SkR32ToR16(rr), SkG32ToG16(gg), SkB32ToB16(bb)); 344589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[kCache16Count] = SkDitherPack888ToRGB16(rr, gg, bb); 345589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache += 1; 346589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r += dr; 347589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g += dg; 348589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b += db; 349589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (--count != 0); 350589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 351589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 3523d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com/* 3533d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * r,g,b used to be SkFixed, but on gcc (4.2.1 mac and 4.6.3 goobuntu) in 3543d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * release builds, we saw a compiler error where the 0xFF parameter in 3553d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * SkPackARGB32() was being totally ignored whenever it was called with 3563d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * a non-zero add (e.g. 0x8000). 3573d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3583d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We found two work-arounds: 3593d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 1. change r,g,b to unsigned (or just one of them) 3603d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 2. change SkPackARGB32 to + its (a << SK_A32_SHIFT) value instead 3613d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * of using | 3623d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3633d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We chose #1 just because it was more localized. 3643d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * See http://code.google.com/p/skia/issues/detail?id=1113 3653d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3663d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * The type SkUFixed encapsulate this need for unsigned, but logically Fixed. 3673d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com */ 3683d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comtypedef uint32_t SkUFixed; 3693d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 37053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.orgvoid SkGradientShaderBase::Build32bitCache(SkPMColor cache[], SkColor c0, SkColor c1, 37153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org int count, U8CPU paintAlpha, uint32_t gradFlags) { 372589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 373589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 374589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // need to apply paintAlpha to our two endpoints 3753d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a0 = SkMulDiv255Round(SkColorGetA(c0), paintAlpha); 3763d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a1 = SkMulDiv255Round(SkColorGetA(c1), paintAlpha); 377589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 378d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 3793d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const bool interpInPremul = SkToBool(gradFlags & 3803d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkGradientShader::kInterpolateColorsInPremul_Flag); 3813d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3823d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r0 = SkColorGetR(c0); 3833d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g0 = SkColorGetG(c0); 3843d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b0 = SkColorGetB(c0); 3853d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3863d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r1 = SkColorGetR(c1); 3873d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g1 = SkColorGetG(c1); 3883d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b1 = SkColorGetB(c1); 3893d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3903d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (interpInPremul) { 3913d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r0 = SkMulDiv255Round(r0, a0); 3923d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g0 = SkMulDiv255Round(g0, a0); 3933d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b0 = SkMulDiv255Round(b0, a0); 3943d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 3953d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r1 = SkMulDiv255Round(r1, a1); 3963d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g1 = SkMulDiv255Round(g1, a1); 3973d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b1 = SkMulDiv255Round(b1, a1); 3983d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } 3993d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4003d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed da = SkIntToFixed(a1 - a0) / (count - 1); 4013d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dr = SkIntToFixed(r1 - r0) / (count - 1); 4023d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dg = SkIntToFixed(g1 - g0) / (count - 1); 4033d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed db = SkIntToFixed(b1 - b0) / (count - 1); 404589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 405d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* We pre-add 1/8 to avoid having to add this to our [0] value each time 406d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com in the loop. Without this, the bias for each would be 407d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 0x2000 0xA000 0xE000 0x6000 408d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com With this trick, we can add 0 for the first (no-op) and just adjust the 409d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com others. 410d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 4113d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed a = SkIntToFixed(a0) + 0x2000; 4123d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed r = SkIntToFixed(r0) + 0x2000; 4133d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed g = SkIntToFixed(g0) + 0x2000; 4143d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed b = SkIntToFixed(b0) + 0x2000; 415d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 416d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* 417d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Our dither-cell (spatially) is 418d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 0 2 419d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 3 1 420d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Where 421d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [0] -> [-1/8 ... 1/8 ) values near 0 422d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [1] -> [ 1/8 ... 3/8 ) values near 1/4 423d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [2] -> [ 3/8 ... 5/8 ) values near 1/2 424d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [3] -> [ 5/8 ... 7/8 ) values near 3/4 425d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 426589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 4273d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (0xFF == a0 && 0 == da) { 428d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 429d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPackARGB32(0xFF, (r + 0 ) >> 16, 430d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 431d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 432d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPackARGB32(0xFF, (r + 0x8000) >> 16, 433d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 434d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 435d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPackARGB32(0xFF, (r + 0xC000) >> 16, 436d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 437d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 438d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPackARGB32(0xFF, (r + 0x4000) >> 16, 439d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 440d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 441d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 442d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 443d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 444d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 445d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 4463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else if (interpInPremul) { 4473d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com do { 4483d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*0] = SkPackARGB32((a + 0 ) >> 16, 4493d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0 ) >> 16, 4503d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0 ) >> 16, 4513d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0 ) >> 16); 4523d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*1] = SkPackARGB32((a + 0x8000) >> 16, 4533d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x8000) >> 16, 4543d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x8000) >> 16, 4553d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x8000) >> 16); 4563d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*2] = SkPackARGB32((a + 0xC000) >> 16, 4573d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0xC000) >> 16, 4583d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0xC000) >> 16, 4593d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0xC000) >> 16); 4603d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*3] = SkPackARGB32((a + 0x4000) >> 16, 4613d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x4000) >> 16, 4623d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x4000) >> 16, 4633d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x4000) >> 16); 4643d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache += 1; 4653d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com a += da; 4663d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r += dr; 4673d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g += dg; 4683d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b += db; 4693d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } while (--count != 0); 4703d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else { // interpolate in unpreml space 471d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 472d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPremultiplyARGBInline((a + 0 ) >> 16, 473d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0 ) >> 16, 474d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 475d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 476d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPremultiplyARGBInline((a + 0x8000) >> 16, 477d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x8000) >> 16, 478d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 479d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 480d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPremultiplyARGBInline((a + 0xC000) >> 16, 481d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0xC000) >> 16, 482d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 483d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 484d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPremultiplyARGBInline((a + 0x4000) >> 16, 485d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x4000) >> 16, 486d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 487d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 488d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 489d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com a += da; 490d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 491d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 492d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 493d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 494d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } 495589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 496589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 497589708bf7c706348b763e8277004cb160b202bdbrileya@google.comstatic inline int SkFixedToFFFF(SkFixed x) { 498589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT((unsigned)x <= SK_Fixed1); 499589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return x - (x >> 16); 500589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 501589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 502589708bf7c706348b763e8277004cb160b202bdbrileya@google.comstatic inline U16CPU bitsTo16(unsigned x, const unsigned bits) { 503589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(x < (1U << bits)); 504589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (6 == bits) { 505589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return (x << 10) | (x << 4) | (x >> 2); 506589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 507589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (8 == bits) { 508589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return (x << 8) | x; 509589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 510589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_throw(); 511589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return 0; 512589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 513589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 51453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.orgconst uint16_t* SkGradientShaderBase::getCache16() const { 51553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fCache16 == NULL) { 51653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org // double the count for dither entries 51753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org const int entryCount = kCache16Count * 2; 51853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org const size_t allocSize = sizeof(uint16_t) * entryCount; 519589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 52053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fCache16Storage == NULL) { // set the storage and our working ptr 52153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache16Storage = (uint16_t*)sk_malloc_throw(allocSize); 52253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 52353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache16 = fCache16Storage; 52453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fColorCount == 2) { 52553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org Build16bitCache(fCache16, fOrigColors[0], fOrigColors[1], 52653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org kCache16Count); 52753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } else { 52853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org Rec* rec = fRecs; 52953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org int prevIndex = 0; 53053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org for (int i = 1; i < fColorCount; i++) { 53153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache16Shift; 53253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org SkASSERT(nextIndex < kCache16Count); 53353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org 53453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (nextIndex > prevIndex) 53553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org Build16bitCache(fCache16 + prevIndex, fOrigColors[i-1], fOrigColors[i], nextIndex - prevIndex + 1); 53653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org prevIndex = nextIndex; 53753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 538589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 539589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 54053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fMapper) { 54153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache16Storage = (uint16_t*)sk_malloc_throw(allocSize); 54253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org uint16_t* linear = fCache16; // just computed linear data 54353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org uint16_t* mapped = fCache16Storage; // storage for mapped data 54453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org SkUnitMapper* map = fMapper; 54553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org for (int i = 0; i < kCache16Count; i++) { 54653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org int index = map->mapUnit16(bitsTo16(i, kCache16Bits)) >> kCache16Shift; 54753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org mapped[i] = linear[index]; 54853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org mapped[i + kCache16Count] = linear[index + kCache16Count]; 54953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 55053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org sk_free(fCache16); 55153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache16 = fCache16Storage; 552589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 553589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 55453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org return fCache16; 555589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 556589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 55753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.orgconst SkPMColor* SkGradientShaderBase::getCache32() const { 55853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fCache32 == NULL) { 55953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org SkImageInfo info; 56053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org info.fWidth = kCache32Count; 56153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org info.fHeight = 4; // for our 4 dither rows 56253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org info.fAlphaType = kPremul_SkAlphaType; 56353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org info.fColorType = kN32_SkColorType; 564589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 56553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (NULL == fCache32PixelRef) { 56653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32PixelRef = SkMallocPixelRef::NewAllocate(info, 0, NULL); 567589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 56853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32 = (SkPMColor*)fCache32PixelRef->getAddr(); 56953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fColorCount == 2) { 57053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org Build32bitCache(fCache32, fOrigColors[0], fOrigColors[1], 57153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org kCache32Count, fCacheAlpha, fGradFlags); 57253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } else { 57353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org Rec* rec = fRecs; 57453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org int prevIndex = 0; 57553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org for (int i = 1; i < fColorCount; i++) { 57653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache32Shift; 57753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org SkASSERT(nextIndex < kCache32Count); 57853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org 57953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (nextIndex > prevIndex) 58053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org Build32bitCache(fCache32 + prevIndex, fOrigColors[i-1], 58153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fOrigColors[i], nextIndex - prevIndex + 1, 58253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCacheAlpha, fGradFlags); 58353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org prevIndex = nextIndex; 58453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 585589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 586001f4ed2fb62ecdc98ce2884d925de11b7516d23commit-bot@chromium.org 58753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org if (fMapper) { 58853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org SkMallocPixelRef* newPR = SkMallocPixelRef::NewAllocate(info, 0, NULL); 58953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org SkPMColor* linear = fCache32; // just computed linear data 59053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org SkPMColor* mapped = (SkPMColor*)newPR->getAddr(); // storage for mapped data 59153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org SkUnitMapper* map = fMapper; 59253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org for (int i = 0; i < kCache32Count; i++) { 59353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org int index = map->mapUnit16((i << 8) | i) >> 8; 59453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org mapped[i + kCache32Count*0] = linear[index + kCache32Count*0]; 59553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org mapped[i + kCache32Count*1] = linear[index + kCache32Count*1]; 59653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org mapped[i + kCache32Count*2] = linear[index + kCache32Count*2]; 59753783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org mapped[i + kCache32Count*3] = linear[index + kCache32Count*3]; 59853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 59953783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32PixelRef->unref(); 60053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32PixelRef = newPR; 60153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org fCache32 = (SkPMColor*)newPR->getAddr(); 60253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 603001f4ed2fb62ecdc98ce2884d925de11b7516d23commit-bot@chromium.org } 60453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org return fCache32; 605589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 606589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 607589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/* 608589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * Because our caller might rebuild the same (logically the same) gradient 609589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * over and over, we'd like to return exactly the same "bitmap" if possible, 610589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * allowing the client to utilize a cache of our bitmap (e.g. with a GPU). 611589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * To do that, we maintain a private cache of built-bitmaps, based on our 612589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * colors and positions. Note: we don't try to flatten the fMapper, so if one 613589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * is present, we skip the cache for now. 614589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 6151c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.comvoid SkGradientShaderBase::getGradientTableBitmap(SkBitmap* bitmap) const { 616589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // our caller assumes no external alpha, so we ensure that our cache is 617589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // built with 0xFF 61853783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org this->setCacheAlpha(0xFF); 619589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 620589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // don't have a way to put the mapper into our cache-key yet 621589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fMapper) { 62253783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org // force our cahce32pixelref to be built 62353783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org (void)this->getCache32(); 624e24ad23ae67ffcb0dc545b7e426cf08d102e0868commit-bot@chromium.org bitmap->setConfig(SkImageInfo::MakeN32Premul(kCache32Count, 1)); 62553783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org bitmap->setPixelRef(fCache32PixelRef); 626589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return; 627589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 628589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 6293d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com // build our key: [numColors + colors[] + {positions[]} + flags ] 6303d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int count = 1 + fColorCount + 1; 631589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 632589708bf7c706348b763e8277004cb160b202bdbrileya@google.com count += fColorCount - 1; // fRecs[].fPos 633589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 634589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 635589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkAutoSTMalloc<16, int32_t> storage(count); 636589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int32_t* buffer = storage.get(); 637589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 638589708bf7c706348b763e8277004cb160b202bdbrileya@google.com *buffer++ = fColorCount; 639589708bf7c706348b763e8277004cb160b202bdbrileya@google.com memcpy(buffer, fOrigColors, fColorCount * sizeof(SkColor)); 640589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer += fColorCount; 641589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 642589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < fColorCount; i++) { 643589708bf7c706348b763e8277004cb160b202bdbrileya@google.com *buffer++ = fRecs[i].fPos; 644589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 645589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 6463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com *buffer++ = fGradFlags; 647589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(buffer - storage.get() == count); 648589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 649589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /////////////////////////////////// 650589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 651589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DECLARE_STATIC_MUTEX(gMutex); 652589708bf7c706348b763e8277004cb160b202bdbrileya@google.com static SkBitmapCache* gCache; 653589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // each cache cost 1K of RAM, since each bitmap will be 1x256 at 32bpp 654589708bf7c706348b763e8277004cb160b202bdbrileya@google.com static const int MAX_NUM_CACHED_GRADIENT_BITMAPS = 32; 655589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkAutoMutexAcquire ama(gMutex); 656589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 657589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (NULL == gCache) { 658589708bf7c706348b763e8277004cb160b202bdbrileya@google.com gCache = SkNEW_ARGS(SkBitmapCache, (MAX_NUM_CACHED_GRADIENT_BITMAPS)); 659589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 660589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = count * sizeof(int32_t); 661589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 662589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (!gCache->find(storage.get(), size, bitmap)) { 663589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force our cahce32pixelref to be built 66453783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org (void)this->getCache32(); 665e24ad23ae67ffcb0dc545b7e426cf08d102e0868commit-bot@chromium.org bitmap->setConfig(SkImageInfo::MakeN32Premul(kCache32Count, 1)); 66653783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org bitmap->setPixelRef(fCache32PixelRef); 667589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 668589708bf7c706348b763e8277004cb160b202bdbrileya@google.com gCache->add(storage.get(), size, *bitmap); 669589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 670589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 671589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 67244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::commonAsAGradient(GradientInfo* info, bool flipGrad) const { 673589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info) { 674589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorCount >= fColorCount) { 67544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkColor* colorLoc; 67644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org Rec* recLoc; 67744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (flipGrad && (info->fColors || info->fColorOffsets)) { 67844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorStorage(fColorCount); 67944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, Rec> recStorage(fColorCount); 68044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorLoc = colorStorage.get(); 68144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recLoc = recStorage.get(); 68244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org FlipGradientColors(colorLoc, recLoc, fOrigColors, fRecs, fColorCount); 68344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 68444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorLoc = fOrigColors; 68544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recLoc = fRecs; 68644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 687589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColors) { 68844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(info->fColors, colorLoc, fColorCount * sizeof(SkColor)); 689589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 690589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorOffsets) { 691589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount == 2) { 692589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[0] = 0; 693589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[1] = SK_Scalar1; 694589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else if (fColorCount > 2) { 69576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 69644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org info->fColorOffsets[i] = SkFixedToScalar(recLoc[i].fPos); 69776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 698589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 699589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 700589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 701589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorCount = fColorCount; 702589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fTileMode = fTileMode; 7033d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com info->fGradientFlags = fGradFlags; 704589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 705589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 706589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 7070f10f7bf1fb43ca6346dc220a076773b1f19a367commit-bot@chromium.org#ifndef SK_IGNORE_TO_STRING 70876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.comvoid SkGradientShaderBase::toString(SkString* str) const { 70976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 71076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendf("%d colors: ", fColorCount); 71176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 71276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 71376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendHex(fOrigColors[i]); 71476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 71576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 71676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 71776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 71876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 71976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (fColorCount > 2) { 72076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" points: ("); 72176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 72276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendScalar(SkFixedToScalar(fRecs[i].fPos)); 72376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 72476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 72576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 72676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 72776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(")"); 72876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 72976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 73076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com static const char* gTileModeName[SkShader::kTileModeCount] = { 73176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com "clamp", "repeat", "mirror" 73276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com }; 73376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 73476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" "); 73576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(gTileModeName[fTileMode]); 73676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 73776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com // TODO: add "fMapper->toString(str);" when SkUnitMapper::toString is added 73876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 73976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com this->INHERITED::toString(str); 74076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com} 74176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com#endif 74276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 743589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 744589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 745589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 746589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#include "SkEmptyShader.h" 747589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 748589708bf7c706348b763e8277004cb160b202bdbrileya@google.com// assumes colors is SkColor* and pos is SkScalar* 749589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define EXPAND_1_COLOR(count) \ 750589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor tmp[2]; \ 751589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { \ 752589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (1 == count) { \ 753589708bf7c706348b763e8277004cb160b202bdbrileya@google.com tmp[0] = tmp[1] = colors[0]; \ 754589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colors = tmp; \ 755589708bf7c706348b763e8277004cb160b202bdbrileya@google.com pos = NULL; \ 756589708bf7c706348b763e8277004cb160b202bdbrileya@google.com count = 2; \ 757589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } \ 758589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (0) 759589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 760437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.comstatic void desc_init(SkGradientShaderBase::Descriptor* desc, 761437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com const SkColor colors[], 762437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com const SkScalar pos[], int colorCount, 763437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkShader::TileMode mode, 7643d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, uint32_t flags) { 765437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fColors = colors; 766437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fPos = pos; 767437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fCount = colorCount; 768437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fTileMode = mode; 769437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com desc->fMapper = mapper; 7703d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc->fFlags = flags; 771437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com} 772437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com 773589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateLinear(const SkPoint pts[2], 774589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 775589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 776589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7773d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, 7783d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 779589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (NULL == pts || NULL == colors || colorCount < 1) { 780589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 781589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 782589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 783589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 784437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 7853d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 786437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com return SkNEW_ARGS(SkLinearGradient, (pts, desc)); 787589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 788589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 789589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateRadial(const SkPoint& center, SkScalar radius, 790589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 791589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 792589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7933d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, 7943d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 795589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (radius <= 0 || NULL == colors || colorCount < 1) { 796589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 797589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 798589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 799589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 800437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 8013d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 802437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com return SkNEW_ARGS(SkRadialGradient, (center, radius, desc)); 803589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 804589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 805589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointRadial(const SkPoint& start, 806589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar startRadius, 807589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkPoint& end, 808589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar endRadius, 809589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 810589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 811589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int colorCount, 812589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 8133d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, 8143d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 815589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 816589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 817589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 818589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 819fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com 820437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 8213d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 822589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return SkNEW_ARGS(SkTwoPointRadialGradient, 823437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com (start, startRadius, end, endRadius, desc)); 824589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 825589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 826589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointConical(const SkPoint& start, 8273d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar startRadius, 8283d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkPoint& end, 8293d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar endRadius, 8303d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkColor colors[], 8313d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkScalar pos[], 8323d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int colorCount, 8333d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkShader::TileMode mode, 8343d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUnitMapper* mapper, 8353d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 836589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 837589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 838589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 839589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (start == end && startRadius == endRadius) { 840589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return SkNEW(SkEmptyShader); 841589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 84244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 8431ee7c6a18a511cde879941324f173ad4c8c123f8rileya@google.com EXPAND_1_COLOR(colorCount); 844589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 84544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org bool flipGradient = startRadius > endRadius; 84644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 847437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 84844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 84944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (!flipGradient) { 85044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org desc_init(&desc, colors, pos, colorCount, mode, mapper, flags); 85144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org return SkNEW_ARGS(SkTwoPointConicalGradient, 85244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org (start, startRadius, end, endRadius, flipGradient, desc)); 85344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 85444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorsNew(colorCount); 85544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkScalar> posNew(colorCount); 85644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < colorCount; ++i) { 85744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorsNew[i] = colors[colorCount - i - 1]; 85844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 85944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 86044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (pos) { 86144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < colorCount; ++i) { 86244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org posNew[i] = 1 - pos[colorCount - i - 1]; 86344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 86444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org desc_init(&desc, colorsNew.get(), posNew.get(), colorCount, mode, mapper, flags); 86544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 86644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org desc_init(&desc, colorsNew.get(), NULL, colorCount, mode, mapper, flags); 86744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 86844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 86944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org return SkNEW_ARGS(SkTwoPointConicalGradient, 87044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org (end, endRadius, start, startRadius, flipGradient, desc)); 87144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 872589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 873589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 874589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateSweep(SkScalar cx, SkScalar cy, 875589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 876589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 8773d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int colorCount, SkUnitMapper* mapper, 8783d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t flags) { 879437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (NULL == colors || colorCount < 1) { 880589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 881589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 882437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com EXPAND_1_COLOR(colorCount); 883589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 884437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 8853d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com desc_init(&desc, colors, pos, colorCount, SkShader::kClamp_TileMode, mapper, flags); 886437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com return SkNEW_ARGS(SkSweepGradient, (cx, cy, desc)); 887589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 888589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 889589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkGradientShader) 890589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkLinearGradient) 891589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkRadialGradient) 892589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSweepGradient) 893589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointRadialGradient) 894589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointConicalGradient) 895589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END 896d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 897d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com/////////////////////////////////////////////////////////////////////////////// 898d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 899cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#if SK_SUPPORT_GPU 900cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 901b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com#include "effects/GrTextureStripAtlas.h" 902c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com#include "GrTBackendEffectFactory.h" 903cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#include "SkGr.h" 904cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 9050707c29413a5a3cc1c2d14b8c65b3692af5c7411bsalomon@google.comGrGLGradientEffect::GrGLGradientEffect(const GrBackendEffectFactory& factory) 906b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com : INHERITED(factory) 90777af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com , fCachedYCoord(SK_ScalarMax) { 908d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 909d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 9100707c29413a5a3cc1c2d14b8c65b3692af5c7411bsalomon@google.comGrGLGradientEffect::~GrGLGradientEffect() { } 911d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 91282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comvoid GrGLGradientEffect::emitUniforms(GrGLShaderBuilder* builder, EffectKey key) { 91382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 914996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == ColorTypeFromKey(key)) { // 2 Color case 91582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 91682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientStartColor"); 91782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 91882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientEndColor"); 9199a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 920996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == ColorTypeFromKey(key)){ // 3 Color Case 92182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 92282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientStartColor"); 92382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorMidUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 92482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientMidColor"); 92582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 92682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientEndColor"); 92782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 92882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { // if not a fast case 92982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fFSYUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 93082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kFloat_GrSLType, "GradientYCoordFS"); 93182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 93282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 93382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 93482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comstatic inline void set_color_uni(const GrGLUniformManager& uman, 93582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const GrGLUniformManager::UniformHandle uni, 93682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color) { 93782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com uman.set4f(uni, 93882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetR(*color) / 255.f, 93982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetG(*color) / 255.f, 94082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetB(*color) / 255.f, 94182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetA(*color) / 255.f); 94282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 94382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 94482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comstatic inline void set_mul_color_uni(const GrGLUniformManager& uman, 94582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const GrGLUniformManager::UniformHandle uni, 94682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color){ 94782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float a = SkColorGetA(*color) / 255.f; 94882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float aDiv255 = a / 255.f; 94982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com uman.set4f(uni, 95082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetR(*color) * aDiv255, 95182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetG(*color) * aDiv255, 95282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkColorGetB(*color) * aDiv255, 95382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com a); 954b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 955b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 956c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.comvoid GrGLGradientEffect::setData(const GrGLUniformManager& uman, 957c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrDrawEffect& drawEffect) { 95882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 959c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 960d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 96182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 962996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == e.getColorType()){ 96382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 96482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 96582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorStartUni, e.getColors(0)); 96682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorEndUni, e.getColors(1)); 96782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 96882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorStartUni, e.getColors(0)); 96982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorEndUni, e.getColors(1)); 97082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 97182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 972996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == e.getColorType()){ 97382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 97482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 97582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorStartUni, e.getColors(0)); 97682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorMidUni, e.getColors(1)); 97782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_mul_color_uni(uman, fColorEndUni, e.getColors(2)); 97882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 97982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorStartUni, e.getColors(0)); 98082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorMidUni, e.getColors(1)); 98182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com set_color_uni(uman, fColorEndUni, e.getColors(2)); 98282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 98382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 9849a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 98582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkScalar yCoord = e.getYCoord(); 98682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (yCoord != fCachedYCoord) { 98782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com uman.set1f(fFSYUni, yCoord); 98882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fCachedYCoord = yCoord; 98982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 990b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 991b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 992b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 99382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 99482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comGrGLEffect::EffectKey GrGLGradientEffect::GenBaseGradientKey(const GrDrawEffect& drawEffect) { 995c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 9969a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 99777af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com EffectKey key = 0; 99882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 999996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == e.getColorType()) { 100082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kTwoColorKey; 1001996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == e.getColorType()){ 100282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kThreeColorKey; 100382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 100482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 100582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 100682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kPremulBeforeInterpKey; 100782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 100882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 100982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return key; 1010d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 1011d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 101282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comvoid GrGLGradientEffect::emitColor(GrGLShaderBuilder* builder, 101382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* gradientTValue, 101482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com EffectKey key, 101582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* outputColor, 101682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* inputColor, 10173390b9ac9ad69a6e772c2b957d75d19611239025commit-bot@chromium.org const TextureSamplerArray& samplers) { 1018996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == ColorTypeFromKey(key)){ 101982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tvec4 colorTemp = mix(%s, %s, clamp(%s, 0.0, 1.0));\n", 102082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorStartUni).c_str(), 102182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str(), 102282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 102382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // Note that we could skip this step if both colors are known to be opaque. Two 102482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // considerations: 102582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The gradient SkShader reporting opaque is more restrictive than necessary in the two pt 102682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // case. Make sure the key reflects this optimization (and note that it can use the same 102782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // shader as thekBeforeIterp case). This same optimization applies to the 3 color case below. 102882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(key)) { 102982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 103082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 103182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 1032824c346b6e0e114063c1a8ad4ba7c3a669ee2cffcommit-bot@chromium.org builder->fsCodeAppendf("\t%s = %s;\n", outputColor, 1033a34995e18b1f0a7d8c9f23451718bb30ff0105b0commit-bot@chromium.org (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 1034996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == ColorTypeFromKey(key)){ 103582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tfloat oneMinus2t = 1.0 - (2.0 * (%s));\n", 103682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 10370694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tvec4 colorTemp = clamp(oneMinus2t, 0.0, 1.0) * %s;\n", 10380694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorStartUni).c_str()); 10390694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org if (kTegra3_GrGLRenderer == builder->ctxInfo().renderer()) { 10400694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // The Tegra3 compiler will sometimes never return if we have 10410694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // min(abs(oneMinus2t), 1.0), or do the abs first in a separate expression. 10420694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppend("\tfloat minAbs = abs(oneMinus2t);\n"); 10430694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppend("\tminAbs = minAbs > 1.0 ? 1.0 : minAbs;\n"); 10440694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += (1.0 - minAbs) * %s;\n", 10450694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 10460694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } else { 10470694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += (1.0 - min(abs(oneMinus2t), 1.0)) * %s;\n", 10480694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 10490694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } 10500694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += clamp(-oneMinus2t, 0.0, 1.0) * %s;\n", 105182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str()); 105282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(key)) { 105382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 105482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 105534bcb9f80336fe0dc56ad5f67aeb0859bf84d92ebsalomon@google.com 1056824c346b6e0e114063c1a8ad4ba7c3a669ee2cffcommit-bot@chromium.org builder->fsCodeAppendf("\t%s = %s;\n", outputColor, 1057a34995e18b1f0a7d8c9f23451718bb30ff0105b0commit-bot@chromium.org (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 105882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 105982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tvec2 coord = vec2(%s, %s);\n", 106082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue, 106182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fFSYUni).c_str()); 106282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\t%s = ", outputColor); 106382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsAppendTextureLookupAndModulate(inputColor, 106482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com samplers[0], 106582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com "coord"); 106682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend(";\n"); 106782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1068d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1069d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1070d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com///////////////////////////////////////////////////////////////////// 1071d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1072fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.comGrGradientEffect::GrGradientEffect(GrContext* ctx, 10731c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.com const SkGradientShaderBase& shader, 1074d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com const SkMatrix& matrix, 107550db75c871b203081a32190ab173f13c785a147fbsalomon@google.com SkShader::TileMode tileMode) { 1076d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1077371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com fIsOpaque = shader.isOpaque(); 1078371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com 1079996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org fColorType = shader.getGpuColorType(&fColors[0]); 108082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 108182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The two and three color specializations do not currently support tiling. 1082996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == fColorType || 1083996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org SkGradientShaderBase::kThree_GpuColorType == fColorType) { 1084996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org fRow = -1; 10858a777a5e6ad081f54ec169dcf714343c38517161skia.committer@gmail.com 1086996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShader::kInterpolateColorsInPremul_Flag & shader.getFlags()) { 108782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 108882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 108982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kAfterInterp_PremulType; 109082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 109177af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix); 1092b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } else { 109382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // doesn't matter how this is set, just be consistent because it is part of the effect key. 109482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 109582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkBitmap bitmap; 109682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com shader.getGradientTableBitmap(&bitmap); 10979a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 109882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureStripAtlas::Desc desc; 109982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fWidth = bitmap.width(); 110082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fHeight = 32; 110182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fRowHeight = bitmap.height(); 110282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fContext = ctx; 1103e24ad23ae67ffcb0dc545b7e426cf08d102e0868commit-bot@chromium.org desc.fConfig = SkImageInfo2GrPixelConfig(bitmap.colorType(), bitmap.alphaType()); 110482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fAtlas = GrTextureStripAtlas::GetAtlas(desc); 110582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkASSERT(NULL != fAtlas); 110682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 110782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // We always filter the gradient table. Each table is one row of a texture, always y-clamp. 110882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureParams params; 110982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setFilterMode(GrTextureParams::kBilerp_FilterMode); 111082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setTileModeX(tileMode); 111182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 111282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fRow = fAtlas->lockRow(bitmap); 111382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (-1 != fRow) { 111482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fYCoord = fAtlas->getYOffset(fRow) + SK_ScalarHalf * 111582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fAtlas->getVerticalScaleFactor(); 111677af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix, fAtlas->getTexture()); 111782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(fAtlas->getTexture(), params); 111882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 111982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTexture* texture = GrLockAndRefCachedBitmapTexture(ctx, bitmap, ¶ms); 112077af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix, texture); 112182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(texture, params); 112282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fYCoord = SK_ScalarHalf; 112382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 112482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // Unlock immediately, this is not great, but we don't have a way of 112582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // knowing when else to unlock it currently, so it may get purged from 112682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // the cache, but it'll still be ref'd until it's no longer being used. 112782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrUnlockAndUnrefCachedBitmapTexture(texture); 112882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 112982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com this->addTextureAccess(&fTextureAccess); 1130b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 113177af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com this->addCoordTransform(&fCoordTransform); 1132d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1133d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1134d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.comGrGradientEffect::~GrGradientEffect() { 1135b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com if (this->useAtlas()) { 1136b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com fAtlas->unlockRow(fRow); 1137b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 1138d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1139d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 11408a252f79629b189a03de22cd8ff0312c5bccedd1bsalomon@google.combool GrGradientEffect::onIsEqual(const GrEffect& effect) const { 11416340a41108633ac1ce5941e5cd30538630c4c55bbsalomon@google.com const GrGradientEffect& s = CastEffect<GrGradientEffect>(effect); 114282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 114382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (this->fColorType == s.getColorType()){ 114482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 1145996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == fColorType) { 114682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 114782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1)) { 114882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 114982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1150996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == fColorType) { 115182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 115282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1) || 115382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(2) != *s.getColors(2)) { 115482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 115582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1156c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } else { 1157c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com if (fYCoord != s.getYCoord()) { 1158c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com return false; 1159c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } 116082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 11619a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 116282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return fTextureAccess.getTexture() == s.fTextureAccess.getTexture() && 116382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.getParams().getTileModeX() == 116468b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com s.fTextureAccess.getParams().getTileModeX() && 116582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com this->useAtlas() == s.useAtlas() && 116677af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.getMatrix().cheapEqualTo(s.fCoordTransform.getMatrix()); 116782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 116882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 116982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 117068b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 117168b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 117268b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.comvoid GrGradientEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const { 1173b8eb2e89edf914caf5479baeffcb670d3e93f496bsalomon@google.com if (fIsOpaque && (kA_GrColorComponentFlag & *validFlags) && 0xff == GrColorUnpackA(*color)) { 1174b8eb2e89edf914caf5479baeffcb670d3e93f496bsalomon@google.com *validFlags = kA_GrColorComponentFlag; 117568b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } else { 117668b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com *validFlags = 0; 117768b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } 117868b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 117968b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 1180e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.orgint GrGradientEffect::RandomGradientParams(SkRandom* random, 1181d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkColor colors[], 1182d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkScalar** stops, 1183d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkShader::TileMode* tm) { 1184d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com int outColors = random->nextRangeU(1, kMaxRandomGradientColors); 1185d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1186d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com // if one color, omit stops, otherwise randomly decide whether or not to 1187d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com if (outColors == 1 || (outColors >= 2 && random->nextBool())) { 1188d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *stops = NULL; 1189d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1190d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 119181712883419f76e25d2ffec38a9438284a45a48dbsalomon@google.com SkScalar stop = 0.f; 1192d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com for (int i = 0; i < outColors; ++i) { 1193d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com colors[i] = random->nextU(); 1194d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com if (NULL != *stops) { 1195d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com (*stops)[i] = stop; 1196d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f; 1197d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1198d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1199d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount)); 1200d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1201d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com return outColors; 1202d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com} 1203d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1204cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#endif 1205