SkGradientShader.cpp revision 9fa60daad4d5f54c0dbe3dbcc7608a8f6d721187
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 159fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reedvoid SkGradientShaderBase::Descriptor::flatten(SkWriteBuffer& buffer) const { 169fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.writeColorArray(fColors, fCount); 179fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (fPos) { 189fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.writeBool(true); 199fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.writeScalarArray(fPos, fCount); 209fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } else { 219fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.writeBool(false); 229fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 239fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.write32(fTileMode); 249fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.write32(fGradFlags); 259fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (fLocalMatrix) { 269fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.writeBool(true); 279fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.writeMatrix(*fLocalMatrix); 289fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } else { 299fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.writeBool(false); 309fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 319fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed} 329fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 339fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reedbool SkGradientShaderBase::DescriptorScope::unflatten(SkReadBuffer& buffer) { 349fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fCount = buffer.getArrayCount(); 359fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (fCount > kStorageCount) { 369fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed size_t allocSize = (sizeof(SkColor) + sizeof(SkScalar)) * fCount; 379fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fDynamicStorage.reset(allocSize); 389fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fColors = (SkColor*)fDynamicStorage.get(); 399fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fPos = (SkScalar*)(fColors + fCount); 409fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } else { 419fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fColors = fColorStorage; 429fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fPos = fPosStorage; 439fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 449fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 459fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (!buffer.readColorArray(const_cast<SkColor*>(fColors), fCount)) { 469fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed return false; 479fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 489fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (buffer.readBool()) { 499fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (!buffer.readScalarArray(const_cast<SkScalar*>(fPos), fCount)) { 509fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed return false; 519fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 529fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } else { 539fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fPos = NULL; 549fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 559fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 569fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fTileMode = (SkShader::TileMode)buffer.read32(); 579fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fGradFlags = buffer.read32(); 589fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 599fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (buffer.readBool()) { 609fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fLocalMatrix = &fLocalMatrixStorage; 619fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed buffer.readMatrix(&fLocalMatrixStorage); 629fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } else { 639fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fLocalMatrix = NULL; 649fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 659fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed return buffer.isValid(); 669fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed} 679fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 689fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed//////////////////////////////////////////////////////////////////////////////////////////// 699fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 70addf2edf3da20f053daa3897cfe2c52d7369a7b1reedSkGradientShaderBase::SkGradientShaderBase(const Descriptor& desc) 71addf2edf3da20f053daa3897cfe2c52d7369a7b1reed : INHERITED(desc.fLocalMatrix) 729c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org{ 73437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT(desc.fCount > 1); 74589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 756c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org fGradFlags = SkToU8(desc.fGradFlags); 76589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 77437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT((unsigned)desc.fTileMode < SkShader::kTileModeCount); 78589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gTileProcs)); 79437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileMode = desc.fTileMode; 80437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileProc = gTileProcs[desc.fTileMode]; 81589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 82589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* Note: we let the caller skip the first and/or last position. 83589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. pos[0] = 0.3, pos[1] = 0.7 84589708bf7c706348b763e8277004cb160b202bdbrileya@google.com In these cases, we insert dummy entries to ensure that the final data 85589708bf7c706348b763e8277004cb160b202bdbrileya@google.com will be bracketed by [0, 1]. 86589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. our_pos[0] = 0, our_pos[1] = 0.3, our_pos[2] = 0.7, our_pos[3] = 1 87589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 88589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Thus colorCount (the caller's value, and fColorCount (our value) may 89589708bf7c706348b763e8277004cb160b202bdbrileya@google.com differ by up to 2. In the above example: 90589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorCount = 2 91589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount = 4 92589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 93437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fColorCount = desc.fCount; 94589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // check if we need to add in dummy start and/or end position/colors 95589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyFirst = false; 96589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyLast = false; 97437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 98437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyFirst = desc.fPos[0] != 0; 99437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyLast = desc.fPos[desc.fCount - 1] != SK_Scalar1; 100589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount += dummyFirst + dummyLast; 101589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 102589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 103589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > kColorStorageCount) { 104589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = sizeof(SkColor) + sizeof(Rec); 1059fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (desc.fPos) { 1069fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed size += sizeof(SkScalar); 1079fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 108589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = reinterpret_cast<SkColor*>( 109589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_malloc_throw(size * fColorCount)); 110589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 111589708bf7c706348b763e8277004cb160b202bdbrileya@google.com else { 112589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = fStorage; 113589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 114589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 115589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // Now copy over the colors, adding the dummies as needed 116589708bf7c706348b763e8277004cb160b202bdbrileya@google.com { 117589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor* origColors = fOrigColors; 118589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyFirst) { 119437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors++ = desc.fColors[0]; 120589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 121437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com memcpy(origColors, desc.fColors, desc.fCount * sizeof(SkColor)); 122589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyLast) { 123437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com origColors += desc.fCount; 124437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors = desc.fColors[desc.fCount - 1]; 125589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 126589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 127589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1289fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (desc.fPos && fColorCount) { 1299fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos = (SkScalar*)(fOrigColors + fColorCount); 1309fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fRecs = (Rec*)(fOrigPos + fColorCount); 1319fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } else { 1329fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos = NULL; 1339fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fRecs = (Rec*)(fOrigColors + fColorCount); 1349fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 1359fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 136589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 137589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 138589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = 0; 139589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // recs->fScale = 0; // unused; 140589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 141437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 1429fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SkScalar* origPosPtr = fOrigPos; 1439fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed *origPosPtr++ = 0; 1449fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 145589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* We need to convert the user's array of relative positions into 146589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fixed-point positions and scale factors. We need these results 147589708bf7c706348b763e8277004cb160b202bdbrileya@google.com to be strictly monotonic (no two values equal or out of order). 148589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Hence this complex loop that just jams a zero for the scale 149589708bf7c706348b763e8277004cb160b202bdbrileya@google.com value if it sees a segment out of order, and it assures that 150589708bf7c706348b763e8277004cb160b202bdbrileya@google.com we start at 0 and end at 1.0 151589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 1529fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SkScalar prev = 0; 153589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int startIndex = dummyFirst ? 0 : 1; 154437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com int count = desc.fCount + dummyLast; 155589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = startIndex; i < count; i++) { 156589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force the last value to be 1.0 1579fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SkScalar curr; 158437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (i == desc.fCount) { // we're really at the dummyLast 1599fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed curr = 1; 160589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 1619fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed curr = SkScalarPin(desc.fPos[i], 0, 1); 162589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 1639fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed *origPosPtr++ = curr; 1649fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 1659fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed recs->fPos = SkScalarToFixed(curr); 166589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (curr > prev) { 1679fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed recs->fScale = (1 << 24) / SkScalarToFixed(curr - prev); 168589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 169589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = 0; // ignore this segment 170589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 171589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // get ready for the next value 172589708bf7c706348b763e8277004cb160b202bdbrileya@google.com prev = curr; 173589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 174589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 175589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { // assume even distribution 1769fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos = NULL; 1779fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 178437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed dp = SK_Fixed1 / (desc.fCount - 1); 179589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed p = dp; 180437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed scale = (desc.fCount - 1) << 8; // (1 << 24) / dp 18144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 1; i < desc.fCount - 1; i++) { 182589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = p; 183589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = scale; 184589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 185589708bf7c706348b763e8277004cb160b202bdbrileya@google.com p += dp; 186589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 18744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recs->fPos = SK_Fixed1; 188811f20de4d20b80ef40ff954acd1e816388b30becommit-bot@chromium.org recs->fScale = scale; 189589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 1909fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } else if (desc.fPos) { 1919fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SkASSERT(2 == fColorCount); 1929fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos[0] = SkScalarPin(desc.fPos[0], 0, 1); 1939fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos[1] = SkScalarPin(desc.fPos[1], fOrigPos[0], 1); 1949fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (0 == fOrigPos[0] && 1 == fOrigPos[1]) { 1959fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos = NULL; 1969fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 197589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 198589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->initCommon(); 199589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 200589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 2019fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed#ifdef SK_SUPPORT_LEGACY_DEEPFLATTENING 2023d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic SkShader::TileMode unpack_mode(uint32_t packed) { 2033d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return (SkShader::TileMode)(packed & 0xF); 2043d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 2053d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 2063d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comstatic uint32_t unpack_flags(uint32_t packed) { 2073d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com return packed >> 4; 2083d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com} 2093d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 2108b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgSkGradientShaderBase::SkGradientShaderBase(SkReadBuffer& buffer) : INHERITED(buffer) { 21183f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org if (buffer.isVersionLT(SkReadBuffer::kNoUnitMappers_Version)) { 21283f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org // skip the old SkUnitMapper slot 21383f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org buffer.skipFlattenable(); 21483f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org } 215589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 216c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com int colorCount = fColorCount = buffer.getArrayCount(); 217589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (colorCount > kColorStorageCount) { 218ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org size_t allocSize = (sizeof(SkColor) + sizeof(SkPMColor) + sizeof(Rec)) * colorCount; 219ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org if (buffer.validateAvailable(allocSize)) { 220ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org fOrigColors = reinterpret_cast<SkColor*>(sk_malloc_throw(allocSize)); 221ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org } else { 222ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org fOrigColors = NULL; 223ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org colorCount = fColorCount = 0; 224ef74fa189b738e13295d6a96f86a6e10223505a8commit-bot@chromium.org } 225589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 226589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = fStorage; 227589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 228025128811219dc45fd99b6c4d1d14f833cf7a26ecommit-bot@chromium.org buffer.readColorArray(fOrigColors, colorCount); 229589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 2303d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com { 2313d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t packed = buffer.readUInt(); 2323d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fGradFlags = SkToU8(unpack_flags(packed)); 2333d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com fTileMode = unpack_mode(packed); 2343d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } 235589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fTileProc = gTileProcs[fTileMode]; 236589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fRecs = (Rec*)(fOrigColors + colorCount); 237589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (colorCount > 2) { 238589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 239589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs[0].fPos = 0; 240589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < colorCount; i++) { 241c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com recs[i].fPos = buffer.readInt(); 242c73dd5c6880739f26216f198c757028fd28df1a4djsollen@google.com recs[i].fScale = buffer.readUInt(); 243589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 244589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 245589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer.readMatrix(&fPtsToUnit); 246589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->initCommon(); 247589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 2489fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed#endif 249589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 250589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkGradientShaderBase::~SkGradientShaderBase() { 251589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fOrigColors != fStorage) { 252589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_free(fOrigColors); 253589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 254589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 255589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 256589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::initCommon() { 257589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned colorAlpha = 0xFF; 258589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 0; i < fColorCount; i++) { 259589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorAlpha &= SkColorGetA(fOrigColors[i]); 260589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 261589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorsAreOpaque = colorAlpha == 0xFF; 262589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 263589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 2648b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgvoid SkGradientShaderBase::flatten(SkWriteBuffer& buffer) const { 2659fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed Descriptor desc; 2669fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fColors = fOrigColors; 2679fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fPos = fOrigPos; 2689fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fCount = fColorCount; 2699fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fTileMode = fTileMode; 2709fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fGradFlags = fGradFlags; 2719fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 2729fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed const SkMatrix& m = this->getLocalMatrix(); 2739fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fLocalMatrix = m.isIdentity() ? NULL : &m; 2749fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.flatten(buffer); 275589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 276589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 277996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.orgSkGradientShaderBase::GpuColorType SkGradientShaderBase::getGpuColorType(SkColor colors[3]) const { 278996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (fColorCount <= 3) { 279996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org memcpy(colors, fOrigColors, fColorCount * sizeof(SkColor)); 280996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 281996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org 282996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkShader::kClamp_TileMode == fTileMode) { 283996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (2 == fColorCount) { 284996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kTwo_GpuColorType; 285996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (3 == fColorCount && 286996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org (SkScalarAbs( 287996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org SkFixedToScalar(fRecs[1].fPos) - SK_ScalarHalf) < SK_Scalar1 / 1000)) { 288996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kThree_GpuColorType; 289996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 290996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 291996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kTexture_GpuColorType; 292996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org} 293996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org 29444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::FlipGradientColors(SkColor* colorDst, Rec* recDst, 29544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkColor* colorSrc, Rec* recSrc, 29644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int count) { 29744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorsTemp(count); 29844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < count; ++i) { 29944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int offset = count - i - 1; 30044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorsTemp[i] = colorSrc[offset]; 30144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 30244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (count > 2) { 30344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, Rec> recsTemp(count); 30444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < count; ++i) { 30544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int offset = count - i - 1; 30644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recsTemp[i].fPos = SK_Fixed1 - recSrc[offset].fPos; 30744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recsTemp[i].fScale = recSrc[offset].fScale; 30844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 30944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(recDst, recsTemp.get(), count * sizeof(Rec)); 31044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 31144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(colorDst, colorsTemp.get(), count * sizeof(SkColor)); 31244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org} 31344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 31444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::flipGradientColors() { 315d3b28e8847358460aeae745da44e474f6a7ab25dskia.committer@gmail.com FlipGradientColors(fOrigColors, fRecs, fOrigColors, fRecs, fColorCount); 31644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org} 31744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 318589708bf7c706348b763e8277004cb160b202bdbrileya@google.combool SkGradientShaderBase::isOpaque() const { 319589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return fColorsAreOpaque; 320589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 321589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 32287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderBaseContext::GradientShaderBaseContext( 323e901b6de3ef8dea842008a08fc81e92fb1478d61commit-bot@chromium.org const SkGradientShaderBase& shader, const ContextRec& rec) 324e901b6de3ef8dea842008a08fc81e92fb1478d61commit-bot@chromium.org : INHERITED(shader, rec) 32587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fCache(shader.refCache(getPaintAlpha())) 32687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org{ 3276e5671d8c9b2d9885e351b631b1dfbb4ed403789commit-bot@chromium.org const SkMatrix& inverse = this->getTotalInverse(); 328bc2f1dc85e458af7bdb87873e60207f9f7299e4acommit-bot@chromium.org 32987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fDstToIndex.setConcat(shader.fPtsToUnit, inverse); 33087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 331589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fDstToIndexProc = fDstToIndex.getMapXYProc(); 33287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fDstToIndexClass = (uint8_t)SkShader::Context::ComputeMatrixClass(fDstToIndex); 333589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 334589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // now convert our colors in to PMColors 335589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned paintAlpha = this->getPaintAlpha(); 336589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 337589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags = this->INHERITED::getFlags(); 33887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (shader.fColorsAreOpaque && paintAlpha == 0xFF) { 339589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kOpaqueAlpha_Flag; 340589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 341589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // we can do span16 as long as our individual colors are opaque, 342589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // regardless of the paint's alpha 34387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (shader.fColorsAreOpaque) { 344589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kHasSpan16_Flag; 345589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 34687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 347589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 34887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderCache::GradientShaderCache( 34987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org U8CPU alpha, const SkGradientShaderBase& shader) 35087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org : fCacheAlpha(alpha) 35187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fShader(shader) 35287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fCache16Inited(false) 35387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fCache32Inited(false) 35487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org{ 35587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // Only initialize the cache in getCache16/32. 35687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache16 = NULL; 35787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache32 = NULL; 35887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache16Storage = NULL; 35987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache32PixelRef = NULL; 360589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 361589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 36287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderCache::~GradientShaderCache() { 36387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org sk_free(fCache16Storage); 36487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkSafeUnref(fCache32PixelRef); 365589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 366589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 367589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define Fixed_To_Dot8(x) (((x) + 0x80) >> 8) 368589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 369589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/** We take the original colors, not our premultiplied PMColors, since we can 370589708bf7c706348b763e8277004cb160b202bdbrileya@google.com build a 16bit table as long as the original colors are opaque, even if the 371589708bf7c706348b763e8277004cb160b202bdbrileya@google.com paint specifies a non-opaque alpha. 372589708bf7c706348b763e8277004cb160b202bdbrileya@google.com*/ 37387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::Build16bitCache( 37487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org uint16_t cache[], SkColor c0, SkColor c1, int count) { 375589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 376589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c0) == 0xFF); 377589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c1) == 0xFF); 378589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 379589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed r = SkColorGetR(c0); 380589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed g = SkColorGetG(c0); 381589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed b = SkColorGetB(c0); 382589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 383589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dr = SkIntToFixed(SkColorGetR(c1) - r) / (count - 1); 384589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dg = SkIntToFixed(SkColorGetG(c1) - g) / (count - 1); 385589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed db = SkIntToFixed(SkColorGetB(c1) - b) / (count - 1); 386589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 387589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r = SkIntToFixed(r) + 0x8000; 388589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g = SkIntToFixed(g) + 0x8000; 389589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b = SkIntToFixed(b) + 0x8000; 390589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 391589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { 392589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned rr = r >> 16; 393589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned gg = g >> 16; 394589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned bb = b >> 16; 395589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[0] = SkPackRGB16(SkR32ToR16(rr), SkG32ToG16(gg), SkB32ToB16(bb)); 396589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[kCache16Count] = SkDitherPack888ToRGB16(rr, gg, bb); 397589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache += 1; 398589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r += dr; 399589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g += dg; 400589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b += db; 401589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (--count != 0); 402589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 403589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 4043d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com/* 4053d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * r,g,b used to be SkFixed, but on gcc (4.2.1 mac and 4.6.3 goobuntu) in 4063d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * release builds, we saw a compiler error where the 0xFF parameter in 4073d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * SkPackARGB32() was being totally ignored whenever it was called with 4083d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * a non-zero add (e.g. 0x8000). 4093d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 4103d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We found two work-arounds: 4113d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 1. change r,g,b to unsigned (or just one of them) 4123d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 2. change SkPackARGB32 to + its (a << SK_A32_SHIFT) value instead 4133d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * of using | 4143d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 4153d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We chose #1 just because it was more localized. 4163d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * See http://code.google.com/p/skia/issues/detail?id=1113 4173d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 4183d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * The type SkUFixed encapsulate this need for unsigned, but logically Fixed. 4193d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com */ 4203d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comtypedef uint32_t SkUFixed; 4213d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 42287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::Build32bitCache( 42387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkPMColor cache[], SkColor c0, SkColor c1, 42487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int count, U8CPU paintAlpha, uint32_t gradFlags) { 425589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 426589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 427589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // need to apply paintAlpha to our two endpoints 4283d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a0 = SkMulDiv255Round(SkColorGetA(c0), paintAlpha); 4293d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a1 = SkMulDiv255Round(SkColorGetA(c1), paintAlpha); 430589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 431d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 4323d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const bool interpInPremul = SkToBool(gradFlags & 4333d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkGradientShader::kInterpolateColorsInPremul_Flag); 4343d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4353d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r0 = SkColorGetR(c0); 4363d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g0 = SkColorGetG(c0); 4373d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b0 = SkColorGetB(c0); 4383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4393d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r1 = SkColorGetR(c1); 4403d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g1 = SkColorGetG(c1); 4413d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b1 = SkColorGetB(c1); 4423d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4433d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (interpInPremul) { 4443d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r0 = SkMulDiv255Round(r0, a0); 4453d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g0 = SkMulDiv255Round(g0, a0); 4463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b0 = SkMulDiv255Round(b0, a0); 4473d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4483d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r1 = SkMulDiv255Round(r1, a1); 4493d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g1 = SkMulDiv255Round(g1, a1); 4503d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b1 = SkMulDiv255Round(b1, a1); 4513d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } 4523d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4533d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed da = SkIntToFixed(a1 - a0) / (count - 1); 4543d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dr = SkIntToFixed(r1 - r0) / (count - 1); 4553d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dg = SkIntToFixed(g1 - g0) / (count - 1); 4563d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed db = SkIntToFixed(b1 - b0) / (count - 1); 457589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 458d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* We pre-add 1/8 to avoid having to add this to our [0] value each time 459d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com in the loop. Without this, the bias for each would be 460d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 0x2000 0xA000 0xE000 0x6000 461d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com With this trick, we can add 0 for the first (no-op) and just adjust the 462d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com others. 463d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 4643d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed a = SkIntToFixed(a0) + 0x2000; 4653d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed r = SkIntToFixed(r0) + 0x2000; 4663d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed g = SkIntToFixed(g0) + 0x2000; 4673d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed b = SkIntToFixed(b0) + 0x2000; 468d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 469d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* 470d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Our dither-cell (spatially) is 471d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 0 2 472d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 3 1 473d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Where 474d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [0] -> [-1/8 ... 1/8 ) values near 0 475d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [1] -> [ 1/8 ... 3/8 ) values near 1/4 476d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [2] -> [ 3/8 ... 5/8 ) values near 1/2 477d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [3] -> [ 5/8 ... 7/8 ) values near 3/4 478d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 479589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 4803d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (0xFF == a0 && 0 == da) { 481d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 482d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPackARGB32(0xFF, (r + 0 ) >> 16, 483d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 484d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 485d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPackARGB32(0xFF, (r + 0x8000) >> 16, 486d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 487d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 488d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPackARGB32(0xFF, (r + 0xC000) >> 16, 489d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 490d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 491d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPackARGB32(0xFF, (r + 0x4000) >> 16, 492d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 493d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 494d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 495d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 496d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 497d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 498d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 4993d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else if (interpInPremul) { 5003d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com do { 5013d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*0] = SkPackARGB32((a + 0 ) >> 16, 5023d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0 ) >> 16, 5033d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0 ) >> 16, 5043d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0 ) >> 16); 5053d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*1] = SkPackARGB32((a + 0x8000) >> 16, 5063d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x8000) >> 16, 5073d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x8000) >> 16, 5083d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x8000) >> 16); 5093d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*2] = SkPackARGB32((a + 0xC000) >> 16, 5103d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0xC000) >> 16, 5113d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0xC000) >> 16, 5123d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0xC000) >> 16); 5133d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*3] = SkPackARGB32((a + 0x4000) >> 16, 5143d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x4000) >> 16, 5153d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x4000) >> 16, 5163d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x4000) >> 16); 5173d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache += 1; 5183d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com a += da; 5193d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r += dr; 5203d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g += dg; 5213d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b += db; 5223d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } while (--count != 0); 5233d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else { // interpolate in unpreml space 524d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 525d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPremultiplyARGBInline((a + 0 ) >> 16, 526d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0 ) >> 16, 527d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 528d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 529d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPremultiplyARGBInline((a + 0x8000) >> 16, 530d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x8000) >> 16, 531d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 532d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 533d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPremultiplyARGBInline((a + 0xC000) >> 16, 534d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0xC000) >> 16, 535d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 536d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 537d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPremultiplyARGBInline((a + 0x4000) >> 16, 538d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x4000) >> 16, 539d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 540d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 541d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 542d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com a += da; 543d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 544d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 545d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 546d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 547d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } 548589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 549589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 550589708bf7c706348b763e8277004cb160b202bdbrileya@google.comstatic inline int SkFixedToFFFF(SkFixed x) { 551589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT((unsigned)x <= SK_Fixed1); 552589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return x - (x >> 16); 553589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 554589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 55587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgconst uint16_t* SkGradientShaderBase::GradientShaderCache::getCache16() { 55687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkOnce(&fCache16Inited, &fCache16Mutex, SkGradientShaderBase::GradientShaderCache::initCache16, 55787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org this); 55887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(fCache16); 55987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org return fCache16; 56087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 561589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 56287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::initCache16(GradientShaderCache* cache) { 56387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // double the count for dither entries 56487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org const int entryCount = kCache16Count * 2; 56587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org const size_t allocSize = sizeof(uint16_t) * entryCount; 56687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 56787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(NULL == cache->fCache16Storage); 56887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache16Storage = (uint16_t*)sk_malloc_throw(allocSize); 56987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache16 = cache->fCache16Storage; 57087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (cache->fShader.fColorCount == 2) { 57187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build16bitCache(cache->fCache16, cache->fShader.fOrigColors[0], 57287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[1], kCache16Count); 57387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } else { 57487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Rec* rec = cache->fShader.fRecs; 57587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int prevIndex = 0; 57687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org for (int i = 1; i < cache->fShader.fColorCount; i++) { 57787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache16Shift; 57887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(nextIndex < kCache16Count); 57987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 58087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (nextIndex > prevIndex) 58187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build16bitCache(cache->fCache16 + prevIndex, cache->fShader.fOrigColors[i-1], 58287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[i], nextIndex - prevIndex + 1); 58387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org prevIndex = nextIndex; 584589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 58587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } 586589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 587589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 58887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgconst SkPMColor* SkGradientShaderBase::GradientShaderCache::getCache32() { 58987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkOnce(&fCache32Inited, &fCache32Mutex, SkGradientShaderBase::GradientShaderCache::initCache32, 59087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org this); 59187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(fCache32); 59287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org return fCache32; 59387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 594589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 59587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::initCache32(GradientShaderCache* cache) { 59687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkImageInfo info; 59787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org info.fWidth = kCache32Count; 59887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org info.fHeight = 4; // for our 4 dither rows 59987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org info.fAlphaType = kPremul_SkAlphaType; 60087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org info.fColorType = kN32_SkColorType; 60187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 60287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(NULL == cache->fCache32PixelRef); 60387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache32PixelRef = SkMallocPixelRef::NewAllocate(info, 0, NULL); 60487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache32 = (SkPMColor*)cache->fCache32PixelRef->getAddr(); 60587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (cache->fShader.fColorCount == 2) { 60687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build32bitCache(cache->fCache32, cache->fShader.fOrigColors[0], 60787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[1], kCache32Count, cache->fCacheAlpha, 60887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fGradFlags); 60987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } else { 61087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Rec* rec = cache->fShader.fRecs; 61187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int prevIndex = 0; 61287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org for (int i = 1; i < cache->fShader.fColorCount; i++) { 61387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache32Shift; 61487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(nextIndex < kCache32Count); 61587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 61687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (nextIndex > prevIndex) 61787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build32bitCache(cache->fCache32 + prevIndex, cache->fShader.fOrigColors[i-1], 61887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[i], nextIndex - prevIndex + 1, 61987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCacheAlpha, cache->fShader.fGradFlags); 62087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org prevIndex = nextIndex; 62153783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 62287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } 62387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 62487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 62587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org/* 62687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org * The gradient holds a cache for the most recent value of alpha. Successive 62787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org * callers with the same alpha value will share the same cache. 62887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org */ 62987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderCache* SkGradientShaderBase::refCache(U8CPU alpha) const { 63087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkAutoMutexAcquire ama(fCacheMutex); 63187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (!fCache || fCache->getAlpha() != alpha) { 63287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache.reset(SkNEW_ARGS(GradientShaderCache, (alpha, *this))); 63387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } 63487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // Increment the ref counter inside the mutex to ensure the returned pointer is still valid. 63587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // Otherwise, the pointer may have been overwritten on a different thread before the object's 63687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // ref count was incremented. 63787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache.get()->ref(); 63887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org return fCache; 639589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 640589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 641d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungemanSK_DECLARE_STATIC_MUTEX(gGradientCacheMutex); 642589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/* 643589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * Because our caller might rebuild the same (logically the same) gradient 644589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * over and over, we'd like to return exactly the same "bitmap" if possible, 645589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * allowing the client to utilize a cache of our bitmap (e.g. with a GPU). 646589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * To do that, we maintain a private cache of built-bitmaps, based on our 647589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * colors and positions. Note: we don't try to flatten the fMapper, so if one 648589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * is present, we skip the cache for now. 649589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 6501c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.comvoid SkGradientShaderBase::getGradientTableBitmap(SkBitmap* bitmap) const { 651589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // our caller assumes no external alpha, so we ensure that our cache is 652589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // built with 0xFF 65387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkAutoTUnref<GradientShaderCache> cache(this->refCache(0xFF)); 654589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 6553d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com // build our key: [numColors + colors[] + {positions[]} + flags ] 6563d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int count = 1 + fColorCount + 1; 657589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 658589708bf7c706348b763e8277004cb160b202bdbrileya@google.com count += fColorCount - 1; // fRecs[].fPos 659589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 660589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 661589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkAutoSTMalloc<16, int32_t> storage(count); 662589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int32_t* buffer = storage.get(); 663589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 664589708bf7c706348b763e8277004cb160b202bdbrileya@google.com *buffer++ = fColorCount; 665589708bf7c706348b763e8277004cb160b202bdbrileya@google.com memcpy(buffer, fOrigColors, fColorCount * sizeof(SkColor)); 666589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer += fColorCount; 667589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 668589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < fColorCount; i++) { 669589708bf7c706348b763e8277004cb160b202bdbrileya@google.com *buffer++ = fRecs[i].fPos; 670589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 671589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 6723d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com *buffer++ = fGradFlags; 673589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(buffer - storage.get() == count); 674589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 675589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /////////////////////////////////// 676589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 677589708bf7c706348b763e8277004cb160b202bdbrileya@google.com static SkBitmapCache* gCache; 678589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // each cache cost 1K of RAM, since each bitmap will be 1x256 at 32bpp 679589708bf7c706348b763e8277004cb160b202bdbrileya@google.com static const int MAX_NUM_CACHED_GRADIENT_BITMAPS = 32; 680d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungeman SkAutoMutexAcquire ama(gGradientCacheMutex); 681589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 682589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (NULL == gCache) { 683589708bf7c706348b763e8277004cb160b202bdbrileya@google.com gCache = SkNEW_ARGS(SkBitmapCache, (MAX_NUM_CACHED_GRADIENT_BITMAPS)); 684589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 685589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = count * sizeof(int32_t); 686589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 687589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (!gCache->find(storage.get(), size, bitmap)) { 688589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force our cahce32pixelref to be built 68987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org (void)cache->getCache32(); 690a3264e53ee3f3c5d6a2c813df7e44b5b96d207f2commit-bot@chromium.org bitmap->setInfo(SkImageInfo::MakeN32Premul(kCache32Count, 1)); 69187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org bitmap->setPixelRef(cache->getCache32PixelRef()); 692589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 693589708bf7c706348b763e8277004cb160b202bdbrileya@google.com gCache->add(storage.get(), size, *bitmap); 694589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 695589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 696589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 69744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::commonAsAGradient(GradientInfo* info, bool flipGrad) const { 698589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info) { 699589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorCount >= fColorCount) { 70044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkColor* colorLoc; 70144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org Rec* recLoc; 70244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (flipGrad && (info->fColors || info->fColorOffsets)) { 70344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorStorage(fColorCount); 70444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, Rec> recStorage(fColorCount); 70544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorLoc = colorStorage.get(); 70644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recLoc = recStorage.get(); 70744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org FlipGradientColors(colorLoc, recLoc, fOrigColors, fRecs, fColorCount); 70844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 70944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorLoc = fOrigColors; 71044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recLoc = fRecs; 71144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 712589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColors) { 71344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(info->fColors, colorLoc, fColorCount * sizeof(SkColor)); 714589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 715589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorOffsets) { 716589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount == 2) { 717589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[0] = 0; 718589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[1] = SK_Scalar1; 719589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else if (fColorCount > 2) { 72076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 72144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org info->fColorOffsets[i] = SkFixedToScalar(recLoc[i].fPos); 72276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 723589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 724589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 725589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 726589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorCount = fColorCount; 727589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fTileMode = fTileMode; 7283d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com info->fGradientFlags = fGradFlags; 729589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 730589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 731589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 7320f10f7bf1fb43ca6346dc220a076773b1f19a367commit-bot@chromium.org#ifndef SK_IGNORE_TO_STRING 73376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.comvoid SkGradientShaderBase::toString(SkString* str) const { 73476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 73576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendf("%d colors: ", fColorCount); 73676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 73776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 73876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendHex(fOrigColors[i]); 73976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 74076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 74176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 74276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 74376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 74476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (fColorCount > 2) { 74576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" points: ("); 74676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 74776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendScalar(SkFixedToScalar(fRecs[i].fPos)); 74876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 74976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 75076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 75176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 75276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(")"); 75376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 75476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 75576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com static const char* gTileModeName[SkShader::kTileModeCount] = { 75676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com "clamp", "repeat", "mirror" 75776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com }; 75876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 75976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" "); 76076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(gTileModeName[fTileMode]); 76176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 76276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com this->INHERITED::toString(str); 76376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com} 76476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com#endif 76576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 766589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 767589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 768589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 769589708bf7c706348b763e8277004cb160b202bdbrileya@google.com// assumes colors is SkColor* and pos is SkScalar* 770589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define EXPAND_1_COLOR(count) \ 771589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor tmp[2]; \ 772589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { \ 773589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (1 == count) { \ 774589708bf7c706348b763e8277004cb160b202bdbrileya@google.com tmp[0] = tmp[1] = colors[0]; \ 775589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colors = tmp; \ 776589708bf7c706348b763e8277004cb160b202bdbrileya@google.com pos = NULL; \ 777589708bf7c706348b763e8277004cb160b202bdbrileya@google.com count = 2; \ 778589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } \ 779589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (0) 780589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 781437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.comstatic void desc_init(SkGradientShaderBase::Descriptor* desc, 782addf2edf3da20f053daa3897cfe2c52d7369a7b1reed const SkColor colors[], const SkScalar pos[], int colorCount, 783addf2edf3da20f053daa3897cfe2c52d7369a7b1reed SkShader::TileMode mode, uint32_t flags, const SkMatrix* localMatrix) { 7846c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fColors = colors; 7856c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fPos = pos; 7866c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fCount = colorCount; 7876c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fTileMode = mode; 7886c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fGradFlags = flags; 789addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc->fLocalMatrix = localMatrix; 790437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com} 791437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com 792589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateLinear(const SkPoint pts[2], 793589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 794589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 795589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7969c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 7979c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 798589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (NULL == pts || NULL == colors || colorCount < 1) { 799589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 800589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 801589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 802589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 803437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 804addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, mode, flags, localMatrix); 805addf2edf3da20f053daa3897cfe2c52d7369a7b1reed return SkNEW_ARGS(SkLinearGradient, (pts, desc)); 806589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 807589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 808589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateRadial(const SkPoint& center, SkScalar radius, 809589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 810589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 811589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 8129c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 8139c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 814589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (radius <= 0 || NULL == colors || colorCount < 1) { 815589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 816589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 817589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 818589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 819437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 820addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, mode, flags, localMatrix); 821addf2edf3da20f053daa3897cfe2c52d7369a7b1reed return SkNEW_ARGS(SkRadialGradient, (center, radius, desc)); 822589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 823589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 824589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointRadial(const SkPoint& start, 825589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar startRadius, 826589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkPoint& end, 827589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar endRadius, 828589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 829589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 830589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int colorCount, 831589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 8329c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 8339c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 834589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 835589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 836589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 837589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 838fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com 839437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 840addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, mode, flags, localMatrix); 841589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return SkNEW_ARGS(SkTwoPointRadialGradient, 842addf2edf3da20f053daa3897cfe2c52d7369a7b1reed (start, startRadius, end, endRadius, desc)); 843589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 844589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 845589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointConical(const SkPoint& start, 8463d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar startRadius, 8473d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkPoint& end, 8483d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar endRadius, 8493d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkColor colors[], 8503d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkScalar pos[], 8513d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int colorCount, 8523d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkShader::TileMode mode, 8539c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 8549c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 855589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (startRadius < 0 || endRadius < 0 || NULL == colors || colorCount < 1) { 856589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 857589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 858589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (start == end && startRadius == endRadius) { 859e1085e0381a4abfe440e664c1a0669f3676a8092reed return SkShader::CreateEmptyShader(); 860589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 86144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 8621ee7c6a18a511cde879941324f173ad4c8c123f8rileya@google.com EXPAND_1_COLOR(colorCount); 863589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 86444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org bool flipGradient = startRadius > endRadius; 86544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 866437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 86744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 86844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (!flipGradient) { 869addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, mode, flags, localMatrix); 87044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org return SkNEW_ARGS(SkTwoPointConicalGradient, 871addf2edf3da20f053daa3897cfe2c52d7369a7b1reed (start, startRadius, end, endRadius, flipGradient, desc)); 87244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 87344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorsNew(colorCount); 87444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkScalar> posNew(colorCount); 87544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < colorCount; ++i) { 87644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorsNew[i] = colors[colorCount - i - 1]; 87744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 87844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 87944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (pos) { 88044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < colorCount; ++i) { 88144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org posNew[i] = 1 - pos[colorCount - i - 1]; 88244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 883addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colorsNew.get(), posNew.get(), colorCount, mode, flags, localMatrix); 88444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 885addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colorsNew.get(), NULL, colorCount, mode, flags, localMatrix); 88644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 88744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 88844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org return SkNEW_ARGS(SkTwoPointConicalGradient, 889addf2edf3da20f053daa3897cfe2c52d7369a7b1reed (end, endRadius, start, startRadius, flipGradient, desc)); 89044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 891589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 892589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 893589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateSweep(SkScalar cx, SkScalar cy, 894589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 895589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 89683f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org int colorCount, 8979c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 8989c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 899437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (NULL == colors || colorCount < 1) { 900589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 901589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 902437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com EXPAND_1_COLOR(colorCount); 903589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 904437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 905addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, SkShader::kClamp_TileMode, flags, localMatrix); 906addf2edf3da20f053daa3897cfe2c52d7369a7b1reed return SkNEW_ARGS(SkSweepGradient, (cx, cy, desc)); 907589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 908589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 909589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkGradientShader) 910589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkLinearGradient) 911589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkRadialGradient) 912589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSweepGradient) 913589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointRadialGradient) 914589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointConicalGradient) 915589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END 916d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 917d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com/////////////////////////////////////////////////////////////////////////////// 918d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 919cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#if SK_SUPPORT_GPU 920cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 921b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com#include "effects/GrTextureStripAtlas.h" 922c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com#include "GrTBackendEffectFactory.h" 923848faf00ec33d39ab3e31e9a11d805cae6ac6562bsalomon#include "gl/GrGLShaderBuilder.h" 924cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#include "SkGr.h" 925cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 9260707c29413a5a3cc1c2d14b8c65b3692af5c7411bsalomon@google.comGrGLGradientEffect::GrGLGradientEffect(const GrBackendEffectFactory& factory) 927b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com : INHERITED(factory) 92877af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com , fCachedYCoord(SK_ScalarMax) { 929d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 930d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 9310707c29413a5a3cc1c2d14b8c65b3692af5c7411bsalomon@google.comGrGLGradientEffect::~GrGLGradientEffect() { } 932d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 93363e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomonvoid GrGLGradientEffect::emitUniforms(GrGLShaderBuilder* builder, uint32_t baseKey) { 93482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 93563e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomon if (SkGradientShaderBase::kTwo_GpuColorType == ColorTypeFromKey(baseKey)) { // 2 Color case 93682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 93782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientStartColor"); 93882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 93982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientEndColor"); 9409a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 94163e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomon } else if (SkGradientShaderBase::kThree_GpuColorType == ColorTypeFromKey(baseKey)){ // 3 Color Case 94282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorStartUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 94382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientStartColor"); 94482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorMidUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 94582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientMidColor"); 94682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fColorEndUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 94782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kVec4f_GrSLType, "GradientEndColor"); 94882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 94982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { // if not a fast case 95082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fFSYUni = builder->addUniform(GrGLShaderBuilder::kFragment_Visibility, 95182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com kFloat_GrSLType, "GradientYCoordFS"); 95282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 95382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 95482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 9557510b224e52b9518a8ddf7418db0e9c258f79539kkinnunenstatic inline void set_color_uni(const GrGLProgramDataManager& pdman, 9567510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen const GrGLProgramDataManager::UniformHandle uni, 95782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color) { 9587510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen pdman.set4f(uni, 9597510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetR(*color) / 255.f, 9607510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetG(*color) / 255.f, 9617510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetB(*color) / 255.f, 9627510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetA(*color) / 255.f); 96382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 96482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 9657510b224e52b9518a8ddf7418db0e9c258f79539kkinnunenstatic inline void set_mul_color_uni(const GrGLProgramDataManager& pdman, 9667510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen const GrGLProgramDataManager::UniformHandle uni, 96782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color){ 96882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float a = SkColorGetA(*color) / 255.f; 96982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float aDiv255 = a / 255.f; 9707510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen pdman.set4f(uni, 9717510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetR(*color) * aDiv255, 9727510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetG(*color) * aDiv255, 9737510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetB(*color) * aDiv255, 9747510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen a); 975b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 976b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 9777510b224e52b9518a8ddf7418db0e9c258f79539kkinnunenvoid GrGLGradientEffect::setData(const GrGLProgramDataManager& pdman, 978c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrDrawEffect& drawEffect) { 97982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 980c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 981d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 98282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 983996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == e.getColorType()){ 98482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 98582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 9867510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorStartUni, e.getColors(0)); 9877510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorEndUni, e.getColors(1)); 98882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 9897510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorStartUni, e.getColors(0)); 9907510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorEndUni, e.getColors(1)); 99182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 99282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 993996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == e.getColorType()){ 99482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 99582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 9967510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorStartUni, e.getColors(0)); 9977510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorMidUni, e.getColors(1)); 9987510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorEndUni, e.getColors(2)); 99982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 10007510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorStartUni, e.getColors(0)); 10017510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorMidUni, e.getColors(1)); 10027510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorEndUni, e.getColors(2)); 100382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 100482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 10059a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 100682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkScalar yCoord = e.getYCoord(); 100782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (yCoord != fCachedYCoord) { 10087510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen pdman.set1f(fFSYUni, yCoord); 100982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fCachedYCoord = yCoord; 101082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1011b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 1012b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 1013b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 101482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 101563e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomonuint32_t GrGLGradientEffect::GenBaseGradientKey(const GrDrawEffect& drawEffect) { 1016c78188896e28a4ae49e406a7422b345ae177dafebsalomon@google.com const GrGradientEffect& e = drawEffect.castEffect<GrGradientEffect>(); 10179a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 101863e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomon uint32_t key = 0; 101982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 1020996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == e.getColorType()) { 102182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kTwoColorKey; 1022996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == e.getColorType()){ 102382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kThreeColorKey; 102482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 102582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 102682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 102782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kPremulBeforeInterpKey; 102882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 102982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 103082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return key; 1031d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 1032d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 103382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.comvoid GrGLGradientEffect::emitColor(GrGLShaderBuilder* builder, 103482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* gradientTValue, 103563e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomon uint32_t baseKey, 103682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* outputColor, 103782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* inputColor, 10383390b9ac9ad69a6e772c2b957d75d19611239025commit-bot@chromium.org const TextureSamplerArray& samplers) { 103963e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomon if (SkGradientShaderBase::kTwo_GpuColorType == ColorTypeFromKey(baseKey)){ 104082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tvec4 colorTemp = mix(%s, %s, clamp(%s, 0.0, 1.0));\n", 104182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorStartUni).c_str(), 104282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str(), 104382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 104482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // Note that we could skip this step if both colors are known to be opaque. Two 104582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // considerations: 104682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The gradient SkShader reporting opaque is more restrictive than necessary in the two pt 104782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // case. Make sure the key reflects this optimization (and note that it can use the same 104882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // shader as thekBeforeIterp case). This same optimization applies to the 3 color case below. 104963e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomon if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(baseKey)) { 105082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 105182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 105282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 1053824c346b6e0e114063c1a8ad4ba7c3a669ee2cffcommit-bot@chromium.org builder->fsCodeAppendf("\t%s = %s;\n", outputColor, 1054a34995e18b1f0a7d8c9f23451718bb30ff0105b0commit-bot@chromium.org (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 105563e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomon } else if (SkGradientShaderBase::kThree_GpuColorType == ColorTypeFromKey(baseKey)){ 105682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tfloat oneMinus2t = 1.0 - (2.0 * (%s));\n", 105782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 10580694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tvec4 colorTemp = clamp(oneMinus2t, 0.0, 1.0) * %s;\n", 10590694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorStartUni).c_str()); 10600694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org if (kTegra3_GrGLRenderer == builder->ctxInfo().renderer()) { 10610694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // The Tegra3 compiler will sometimes never return if we have 10620694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // min(abs(oneMinus2t), 1.0), or do the abs first in a separate expression. 10630694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppend("\tfloat minAbs = abs(oneMinus2t);\n"); 10640694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppend("\tminAbs = minAbs > 1.0 ? 1.0 : minAbs;\n"); 10650694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += (1.0 - minAbs) * %s;\n", 10660694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 10670694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } else { 10680694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += (1.0 - min(abs(oneMinus2t), 1.0)) * %s;\n", 10690694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 10700694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } 10710694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->fsCodeAppendf("\tcolorTemp += clamp(-oneMinus2t, 0.0, 1.0) * %s;\n", 107282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str()); 107363e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomon if (GrGradientEffect::kAfterInterp_PremulType == PremulTypeFromKey(baseKey)) { 107482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 107582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 107634bcb9f80336fe0dc56ad5f67aeb0859bf84d92ebsalomon@google.com 1077824c346b6e0e114063c1a8ad4ba7c3a669ee2cffcommit-bot@chromium.org builder->fsCodeAppendf("\t%s = %s;\n", outputColor, 1078a34995e18b1f0a7d8c9f23451718bb30ff0105b0commit-bot@chromium.org (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 107982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 108082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\tvec2 coord = vec2(%s, %s);\n", 108182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue, 108282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fFSYUni).c_str()); 108382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppendf("\t%s = ", outputColor); 108482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsAppendTextureLookupAndModulate(inputColor, 108582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com samplers[0], 108682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com "coord"); 108782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->fsCodeAppend(";\n"); 108882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1089d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1090d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1091d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com///////////////////////////////////////////////////////////////////// 1092d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1093fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.comGrGradientEffect::GrGradientEffect(GrContext* ctx, 10941c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.com const SkGradientShaderBase& shader, 1095d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com const SkMatrix& matrix, 109650db75c871b203081a32190ab173f13c785a147fbsalomon@google.com SkShader::TileMode tileMode) { 1097d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1098371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com fIsOpaque = shader.isOpaque(); 1099371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com 1100996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org fColorType = shader.getGpuColorType(&fColors[0]); 110182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 110282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The two and three color specializations do not currently support tiling. 1103996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == fColorType || 1104996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org SkGradientShaderBase::kThree_GpuColorType == fColorType) { 1105996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org fRow = -1; 11068a777a5e6ad081f54ec169dcf714343c38517161skia.committer@gmail.com 11076c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org if (SkGradientShader::kInterpolateColorsInPremul_Flag & shader.getGradFlags()) { 110882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 110982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 111082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kAfterInterp_PremulType; 111182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 111277af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix); 1113b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } else { 111482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // doesn't matter how this is set, just be consistent because it is part of the effect key. 111582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 111682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkBitmap bitmap; 111782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com shader.getGradientTableBitmap(&bitmap); 11189a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 111982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureStripAtlas::Desc desc; 112082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fWidth = bitmap.width(); 112182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fHeight = 32; 112282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fRowHeight = bitmap.height(); 112382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fContext = ctx; 11243adcc3403377c0b9a7afde6db8e0432325413a10commit-bot@chromium.org desc.fConfig = SkImageInfo2GrPixelConfig(bitmap.info()); 112582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fAtlas = GrTextureStripAtlas::GetAtlas(desc); 112682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkASSERT(NULL != fAtlas); 112782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 112882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // We always filter the gradient table. Each table is one row of a texture, always y-clamp. 112982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureParams params; 113082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setFilterMode(GrTextureParams::kBilerp_FilterMode); 113182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setTileModeX(tileMode); 113282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 113382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fRow = fAtlas->lockRow(bitmap); 113482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (-1 != fRow) { 113582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fYCoord = fAtlas->getYOffset(fRow) + SK_ScalarHalf * 113682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fAtlas->getVerticalScaleFactor(); 113777af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix, fAtlas->getTexture()); 113882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(fAtlas->getTexture(), params); 113982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 114082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTexture* texture = GrLockAndRefCachedBitmapTexture(ctx, bitmap, ¶ms); 114177af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix, texture); 114282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(texture, params); 114382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fYCoord = SK_ScalarHalf; 114482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 114582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // Unlock immediately, this is not great, but we don't have a way of 114682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // knowing when else to unlock it currently, so it may get purged from 114782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // the cache, but it'll still be ref'd until it's no longer being used. 114882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrUnlockAndUnrefCachedBitmapTexture(texture); 114982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 115082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com this->addTextureAccess(&fTextureAccess); 1151b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 115277af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com this->addCoordTransform(&fCoordTransform); 1153d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1154d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1155d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.comGrGradientEffect::~GrGradientEffect() { 1156b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com if (this->useAtlas()) { 1157b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com fAtlas->unlockRow(fRow); 1158b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 1159d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1160d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 11618a252f79629b189a03de22cd8ff0312c5bccedd1bsalomon@google.combool GrGradientEffect::onIsEqual(const GrEffect& effect) const { 11626340a41108633ac1ce5941e5cd30538630c4c55bbsalomon@google.com const GrGradientEffect& s = CastEffect<GrGradientEffect>(effect); 116382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 116482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (this->fColorType == s.getColorType()){ 116582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 1166996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == fColorType) { 116782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 116882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1)) { 116982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 117082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1171996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == fColorType) { 117282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 117382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1) || 117482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(2) != *s.getColors(2)) { 117582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 117682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1177c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } else { 1178c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com if (fYCoord != s.getYCoord()) { 1179c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com return false; 1180c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } 118182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 11829a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 118382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return fTextureAccess.getTexture() == s.fTextureAccess.getTexture() && 118482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.getParams().getTileModeX() == 118568b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com s.fTextureAccess.getParams().getTileModeX() && 118682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com this->useAtlas() == s.useAtlas() && 118777af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.getMatrix().cheapEqualTo(s.fCoordTransform.getMatrix()); 118882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 118982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 119082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 119168b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 119268b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 119368b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.comvoid GrGradientEffect::getConstantColorComponents(GrColor* color, uint32_t* validFlags) const { 1194b8eb2e89edf914caf5479baeffcb670d3e93f496bsalomon@google.com if (fIsOpaque && (kA_GrColorComponentFlag & *validFlags) && 0xff == GrColorUnpackA(*color)) { 1195b8eb2e89edf914caf5479baeffcb670d3e93f496bsalomon@google.com *validFlags = kA_GrColorComponentFlag; 119668b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } else { 119768b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com *validFlags = 0; 119868b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } 119968b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 120068b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 1201e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.orgint GrGradientEffect::RandomGradientParams(SkRandom* random, 1202d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkColor colors[], 1203d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkScalar** stops, 1204d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkShader::TileMode* tm) { 1205d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com int outColors = random->nextRangeU(1, kMaxRandomGradientColors); 1206d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1207d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com // if one color, omit stops, otherwise randomly decide whether or not to 1208d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com if (outColors == 1 || (outColors >= 2 && random->nextBool())) { 1209d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *stops = NULL; 1210d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1211d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 121281712883419f76e25d2ffec38a9438284a45a48dbsalomon@google.com SkScalar stop = 0.f; 1213d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com for (int i = 0; i < outColors; ++i) { 1214d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com colors[i] = random->nextU(); 1215d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com if (NULL != *stops) { 1216d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com (*stops)[i] = stop; 1217d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f; 1218d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1219d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1220d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount)); 1221d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1222d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com return outColors; 1223d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com} 1224d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1225cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#endif 1226