SkGradientShader.cpp revision 5f5a8d7599b8e248633ac122294b7a01401fedcb
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 70cc695fee81613dc92746c1c6bb27f45cfc6ce73emtkleinSkGradientShaderBase::SkGradientShaderBase(const Descriptor& desc, const SkMatrix& ptsToUnit) 71addf2edf3da20f053daa3897cfe2c52d7369a7b1reed : INHERITED(desc.fLocalMatrix) 72cc695fee81613dc92746c1c6bb27f45cfc6ce73emtklein , fPtsToUnit(ptsToUnit) 739c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org{ 74cc695fee81613dc92746c1c6bb27f45cfc6ce73emtklein fPtsToUnit.getType(); // Precache so reads are threadsafe. 75437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT(desc.fCount > 1); 76589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 776c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org fGradFlags = SkToU8(desc.fGradFlags); 78589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 79437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkASSERT((unsigned)desc.fTileMode < SkShader::kTileModeCount); 80589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gTileProcs)); 81437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileMode = desc.fTileMode; 82437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fTileProc = gTileProcs[desc.fTileMode]; 83589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 84589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* Note: we let the caller skip the first and/or last position. 85589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. pos[0] = 0.3, pos[1] = 0.7 86589708bf7c706348b763e8277004cb160b202bdbrileya@google.com In these cases, we insert dummy entries to ensure that the final data 87589708bf7c706348b763e8277004cb160b202bdbrileya@google.com will be bracketed by [0, 1]. 88589708bf7c706348b763e8277004cb160b202bdbrileya@google.com i.e. our_pos[0] = 0, our_pos[1] = 0.3, our_pos[2] = 0.7, our_pos[3] = 1 89589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 90589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Thus colorCount (the caller's value, and fColorCount (our value) may 91589708bf7c706348b763e8277004cb160b202bdbrileya@google.com differ by up to 2. In the above example: 92589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorCount = 2 93589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount = 4 94589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 95437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com fColorCount = desc.fCount; 96589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // check if we need to add in dummy start and/or end position/colors 97589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyFirst = false; 98589708bf7c706348b763e8277004cb160b202bdbrileya@google.com bool dummyLast = false; 99437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 100437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyFirst = desc.fPos[0] != 0; 101437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com dummyLast = desc.fPos[desc.fCount - 1] != SK_Scalar1; 102589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorCount += dummyFirst + dummyLast; 103589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 104589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 105589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > kColorStorageCount) { 106589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = sizeof(SkColor) + sizeof(Rec); 1079fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (desc.fPos) { 1089fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed size += sizeof(SkScalar); 1099fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 110589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = reinterpret_cast<SkColor*>( 111589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_malloc_throw(size * fColorCount)); 112589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 113589708bf7c706348b763e8277004cb160b202bdbrileya@google.com else { 114589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fOrigColors = fStorage; 115589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 116589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 117589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // Now copy over the colors, adding the dummies as needed 118589708bf7c706348b763e8277004cb160b202bdbrileya@google.com { 119589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor* origColors = fOrigColors; 120589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyFirst) { 121437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors++ = desc.fColors[0]; 122589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 123437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com memcpy(origColors, desc.fColors, desc.fCount * sizeof(SkColor)); 124589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (dummyLast) { 125437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com origColors += desc.fCount; 126437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com *origColors = desc.fColors[desc.fCount - 1]; 127589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 128589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 129589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 1309fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (desc.fPos && fColorCount) { 1319fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos = (SkScalar*)(fOrigColors + fColorCount); 1329fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fRecs = (Rec*)(fOrigPos + fColorCount); 1339fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } else { 1349fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos = NULL; 1359fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fRecs = (Rec*)(fOrigColors + fColorCount); 1369fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 1379fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 138589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 139589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Rec* recs = fRecs; 140589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = 0; 141589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // recs->fScale = 0; // unused; 142589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 143437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (desc.fPos) { 1449fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SkScalar* origPosPtr = fOrigPos; 1459fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed *origPosPtr++ = 0; 1469fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 147589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /* We need to convert the user's array of relative positions into 148589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fixed-point positions and scale factors. We need these results 149589708bf7c706348b763e8277004cb160b202bdbrileya@google.com to be strictly monotonic (no two values equal or out of order). 150589708bf7c706348b763e8277004cb160b202bdbrileya@google.com Hence this complex loop that just jams a zero for the scale 151589708bf7c706348b763e8277004cb160b202bdbrileya@google.com value if it sees a segment out of order, and it assures that 152589708bf7c706348b763e8277004cb160b202bdbrileya@google.com we start at 0 and end at 1.0 153589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 1549fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SkScalar prev = 0; 155589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int startIndex = dummyFirst ? 0 : 1; 156437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com int count = desc.fCount + dummyLast; 157589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = startIndex; i < count; i++) { 158589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force the last value to be 1.0 1599fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SkScalar curr; 160437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com if (i == desc.fCount) { // we're really at the dummyLast 1619fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed curr = 1; 162589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 1639fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed curr = SkScalarPin(desc.fPos[i], 0, 1); 164589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 1659fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed *origPosPtr++ = curr; 16655de40b38c8771b6853dfef783d6eaa4ea495f23mtklein 1679fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed recs->fPos = SkScalarToFixed(curr); 16855de40b38c8771b6853dfef783d6eaa4ea495f23mtklein SkFixed diff = SkScalarToFixed(curr - prev); 16955de40b38c8771b6853dfef783d6eaa4ea495f23mtklein if (diff > 0) { 17055de40b38c8771b6853dfef783d6eaa4ea495f23mtklein recs->fScale = (1 << 24) / diff; 171589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { 172589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = 0; // ignore this segment 173589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 174589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // get ready for the next value 175589708bf7c706348b763e8277004cb160b202bdbrileya@google.com prev = curr; 176589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 177589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 178589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else { // assume even distribution 1799fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos = NULL; 1809fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 181437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed dp = SK_Fixed1 / (desc.fCount - 1); 182589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed p = dp; 183437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkFixed scale = (desc.fCount - 1) << 8; // (1 << 24) / dp 18444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 1; i < desc.fCount - 1; i++) { 185589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fPos = p; 186589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs->fScale = scale; 187589708bf7c706348b763e8277004cb160b202bdbrileya@google.com recs += 1; 188589708bf7c706348b763e8277004cb160b202bdbrileya@google.com p += dp; 189589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 19044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recs->fPos = SK_Fixed1; 191811f20de4d20b80ef40ff954acd1e816388b30becommit-bot@chromium.org recs->fScale = scale; 192589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 1939fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } else if (desc.fPos) { 1949fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed SkASSERT(2 == fColorCount); 1959fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos[0] = SkScalarPin(desc.fPos[0], 0, 1); 1969fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos[1] = SkScalarPin(desc.fPos[1], fOrigPos[0], 1); 1979fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed if (0 == fOrigPos[0] && 1 == fOrigPos[1]) { 1989fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed fOrigPos = NULL; 1999fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed } 200589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 201589708bf7c706348b763e8277004cb160b202bdbrileya@google.com this->initCommon(); 202589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 203589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 204589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkGradientShaderBase::~SkGradientShaderBase() { 205589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fOrigColors != fStorage) { 206589708bf7c706348b763e8277004cb160b202bdbrileya@google.com sk_free(fOrigColors); 207589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 208589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 209589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 210589708bf7c706348b763e8277004cb160b202bdbrileya@google.comvoid SkGradientShaderBase::initCommon() { 211589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned colorAlpha = 0xFF; 212589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 0; i < fColorCount; i++) { 213589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colorAlpha &= SkColorGetA(fOrigColors[i]); 214589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 215589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fColorsAreOpaque = colorAlpha == 0xFF; 216589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 217589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 2188b0e8ac5f582de80356019406e2975079bf0829dcommit-bot@chromium.orgvoid SkGradientShaderBase::flatten(SkWriteBuffer& buffer) const { 2199fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed Descriptor desc; 2209fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fColors = fOrigColors; 2219fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fPos = fOrigPos; 2229fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fCount = fColorCount; 2239fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fTileMode = fTileMode; 2249fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fGradFlags = fGradFlags; 2259fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed 2269fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed const SkMatrix& m = this->getLocalMatrix(); 2279fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.fLocalMatrix = m.isIdentity() ? NULL : &m; 2289fa60daad4d5f54c0dbe3dbcc7608a8f6d721187reed desc.flatten(buffer); 229589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 230589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 231996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.orgSkGradientShaderBase::GpuColorType SkGradientShaderBase::getGpuColorType(SkColor colors[3]) const { 232996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (fColorCount <= 3) { 233996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org memcpy(colors, fOrigColors, fColorCount * sizeof(SkColor)); 234996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 235996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org 236996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkShader::kClamp_TileMode == fTileMode) { 237996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (2 == fColorCount) { 238996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kTwo_GpuColorType; 239996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (3 == fColorCount && 240996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org (SkScalarAbs( 241996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org SkFixedToScalar(fRecs[1].fPos) - SK_ScalarHalf) < SK_Scalar1 / 1000)) { 242996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kThree_GpuColorType; 243996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 244996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } 245996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org return kTexture_GpuColorType; 246996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org} 247996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org 24844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::FlipGradientColors(SkColor* colorDst, Rec* recDst, 24944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkColor* colorSrc, Rec* recSrc, 25044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int count) { 25144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorsTemp(count); 25244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < count; ++i) { 25344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int offset = count - i - 1; 25444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorsTemp[i] = colorSrc[offset]; 25544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 25644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (count > 2) { 25744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, Rec> recsTemp(count); 25844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < count; ++i) { 25944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org int offset = count - i - 1; 26044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recsTemp[i].fPos = SK_Fixed1 - recSrc[offset].fPos; 26144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recsTemp[i].fScale = recSrc[offset].fScale; 26244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 26344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(recDst, recsTemp.get(), count * sizeof(Rec)); 26444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 26544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(colorDst, colorsTemp.get(), count * sizeof(SkColor)); 26644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org} 26744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 268589708bf7c706348b763e8277004cb160b202bdbrileya@google.combool SkGradientShaderBase::isOpaque() const { 269589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return fColorsAreOpaque; 270589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 271589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 2728367b8cb7a6b2f163ee41365323cb219b7049b15reedstatic unsigned rounded_divide(unsigned numer, unsigned denom) { 2738367b8cb7a6b2f163ee41365323cb219b7049b15reed return (numer + (denom >> 1)) / denom; 2748367b8cb7a6b2f163ee41365323cb219b7049b15reed} 2758367b8cb7a6b2f163ee41365323cb219b7049b15reed 2768367b8cb7a6b2f163ee41365323cb219b7049b15reedbool SkGradientShaderBase::onAsLuminanceColor(SkColor* lum) const { 2778367b8cb7a6b2f163ee41365323cb219b7049b15reed // we just compute an average color. 2788367b8cb7a6b2f163ee41365323cb219b7049b15reed // possibly we could weight this based on the proportional width for each color 2798367b8cb7a6b2f163ee41365323cb219b7049b15reed // assuming they are not evenly distributed in the fPos array. 2808367b8cb7a6b2f163ee41365323cb219b7049b15reed int r = 0; 2818367b8cb7a6b2f163ee41365323cb219b7049b15reed int g = 0; 2828367b8cb7a6b2f163ee41365323cb219b7049b15reed int b = 0; 2838367b8cb7a6b2f163ee41365323cb219b7049b15reed const int n = fColorCount; 2848367b8cb7a6b2f163ee41365323cb219b7049b15reed for (int i = 0; i < n; ++i) { 2858367b8cb7a6b2f163ee41365323cb219b7049b15reed SkColor c = fOrigColors[i]; 2868367b8cb7a6b2f163ee41365323cb219b7049b15reed r += SkColorGetR(c); 2878367b8cb7a6b2f163ee41365323cb219b7049b15reed g += SkColorGetG(c); 2888367b8cb7a6b2f163ee41365323cb219b7049b15reed b += SkColorGetB(c); 2898367b8cb7a6b2f163ee41365323cb219b7049b15reed } 2908367b8cb7a6b2f163ee41365323cb219b7049b15reed *lum = SkColorSetRGB(rounded_divide(r, n), rounded_divide(g, n), rounded_divide(b, n)); 2918367b8cb7a6b2f163ee41365323cb219b7049b15reed return true; 2928367b8cb7a6b2f163ee41365323cb219b7049b15reed} 2938367b8cb7a6b2f163ee41365323cb219b7049b15reed 29487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderBaseContext::GradientShaderBaseContext( 295e901b6de3ef8dea842008a08fc81e92fb1478d61commit-bot@chromium.org const SkGradientShaderBase& shader, const ContextRec& rec) 296e901b6de3ef8dea842008a08fc81e92fb1478d61commit-bot@chromium.org : INHERITED(shader, rec) 29787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fCache(shader.refCache(getPaintAlpha())) 29887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org{ 2996e5671d8c9b2d9885e351b631b1dfbb4ed403789commit-bot@chromium.org const SkMatrix& inverse = this->getTotalInverse(); 300bc2f1dc85e458af7bdb87873e60207f9f7299e4acommit-bot@chromium.org 30187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fDstToIndex.setConcat(shader.fPtsToUnit, inverse); 30287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 303589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fDstToIndexProc = fDstToIndex.getMapXYProc(); 30487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fDstToIndexClass = (uint8_t)SkShader::Context::ComputeMatrixClass(fDstToIndex); 305589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 306589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // now convert our colors in to PMColors 307589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned paintAlpha = this->getPaintAlpha(); 308589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 309589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags = this->INHERITED::getFlags(); 31087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (shader.fColorsAreOpaque && paintAlpha == 0xFF) { 311589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kOpaqueAlpha_Flag; 312589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 313589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // we can do span16 as long as our individual colors are opaque, 314589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // regardless of the paint's alpha 31587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (shader.fColorsAreOpaque) { 316589708bf7c706348b763e8277004cb160b202bdbrileya@google.com fFlags |= kHasSpan16_Flag; 317589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 31887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 319589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 32087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderCache::GradientShaderCache( 32187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org U8CPU alpha, const SkGradientShaderBase& shader) 32287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org : fCacheAlpha(alpha) 32387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fShader(shader) 32487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fCache16Inited(false) 32587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org , fCache32Inited(false) 32687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org{ 32787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // Only initialize the cache in getCache16/32. 32887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache16 = NULL; 32987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache32 = NULL; 33087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache16Storage = NULL; 33187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache32PixelRef = NULL; 332589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 333589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 33487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderCache::~GradientShaderCache() { 33587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org sk_free(fCache16Storage); 33687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkSafeUnref(fCache32PixelRef); 337589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 338589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 339589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define Fixed_To_Dot8(x) (((x) + 0x80) >> 8) 340589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 341589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/** We take the original colors, not our premultiplied PMColors, since we can 342589708bf7c706348b763e8277004cb160b202bdbrileya@google.com build a 16bit table as long as the original colors are opaque, even if the 343589708bf7c706348b763e8277004cb160b202bdbrileya@google.com paint specifies a non-opaque alpha. 344589708bf7c706348b763e8277004cb160b202bdbrileya@google.com*/ 34587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::Build16bitCache( 34687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org uint16_t cache[], SkColor c0, SkColor c1, int count) { 347589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 348589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c0) == 0xFF); 349589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(SkColorGetA(c1) == 0xFF); 350589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 351589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed r = SkColorGetR(c0); 352589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed g = SkColorGetG(c0); 353589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed b = SkColorGetB(c0); 354589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 355589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dr = SkIntToFixed(SkColorGetR(c1) - r) / (count - 1); 356589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed dg = SkIntToFixed(SkColorGetG(c1) - g) / (count - 1); 357589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkFixed db = SkIntToFixed(SkColorGetB(c1) - b) / (count - 1); 358589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 359589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r = SkIntToFixed(r) + 0x8000; 360589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g = SkIntToFixed(g) + 0x8000; 361589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b = SkIntToFixed(b) + 0x8000; 362589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 363589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { 364589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned rr = r >> 16; 365589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned gg = g >> 16; 366589708bf7c706348b763e8277004cb160b202bdbrileya@google.com unsigned bb = b >> 16; 367589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[0] = SkPackRGB16(SkR32ToR16(rr), SkG32ToG16(gg), SkB32ToB16(bb)); 368589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache[kCache16Count] = SkDitherPack888ToRGB16(rr, gg, bb); 369589708bf7c706348b763e8277004cb160b202bdbrileya@google.com cache += 1; 370589708bf7c706348b763e8277004cb160b202bdbrileya@google.com r += dr; 371589708bf7c706348b763e8277004cb160b202bdbrileya@google.com g += dg; 372589708bf7c706348b763e8277004cb160b202bdbrileya@google.com b += db; 373589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (--count != 0); 374589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 375589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 3763d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com/* 3773d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * r,g,b used to be SkFixed, but on gcc (4.2.1 mac and 4.6.3 goobuntu) in 3783d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * release builds, we saw a compiler error where the 0xFF parameter in 3793d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * SkPackARGB32() was being totally ignored whenever it was called with 3803d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * a non-zero add (e.g. 0x8000). 3813d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3823d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We found two work-arounds: 3833d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 1. change r,g,b to unsigned (or just one of them) 3843d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 2. change SkPackARGB32 to + its (a << SK_A32_SHIFT) value instead 3853d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * of using | 3863d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3873d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * We chose #1 just because it was more localized. 3883d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * See http://code.google.com/p/skia/issues/detail?id=1113 3893d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * 3903d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com * The type SkUFixed encapsulate this need for unsigned, but logically Fixed. 3913d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com */ 3923d3a860d0ba878adb905512a45c500a67532b0a3reed@google.comtypedef uint32_t SkUFixed; 3933d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 39487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::Build32bitCache( 39587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkPMColor cache[], SkColor c0, SkColor c1, 39687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int count, U8CPU paintAlpha, uint32_t gradFlags) { 397589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(count > 1); 398589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 399589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // need to apply paintAlpha to our two endpoints 4003d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a0 = SkMulDiv255Round(SkColorGetA(c0), paintAlpha); 4013d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t a1 = SkMulDiv255Round(SkColorGetA(c1), paintAlpha); 402589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 403d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 4043d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const bool interpInPremul = SkToBool(gradFlags & 4053d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkGradientShader::kInterpolateColorsInPremul_Flag); 4063d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4073d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r0 = SkColorGetR(c0); 4083d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g0 = SkColorGetG(c0); 4093d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b0 = SkColorGetB(c0); 4103d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4113d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t r1 = SkColorGetR(c1); 4123d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t g1 = SkColorGetG(c1); 4133d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com uint32_t b1 = SkColorGetB(c1); 4143d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4153d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (interpInPremul) { 4163d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r0 = SkMulDiv255Round(r0, a0); 4173d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g0 = SkMulDiv255Round(g0, a0); 4183d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b0 = SkMulDiv255Round(b0, a0); 4193d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4203d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r1 = SkMulDiv255Round(r1, a1); 4213d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g1 = SkMulDiv255Round(g1, a1); 4223d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b1 = SkMulDiv255Round(b1, a1); 4233d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } 4243d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com 4253d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed da = SkIntToFixed(a1 - a0) / (count - 1); 4263d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dr = SkIntToFixed(r1 - r0) / (count - 1); 4273d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed dg = SkIntToFixed(g1 - g0) / (count - 1); 4283d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkFixed db = SkIntToFixed(b1 - b0) / (count - 1); 429589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 430d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* We pre-add 1/8 to avoid having to add this to our [0] value each time 431d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com in the loop. Without this, the bias for each would be 432d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 0x2000 0xA000 0xE000 0x6000 433d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com With this trick, we can add 0 for the first (no-op) and just adjust the 434d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com others. 435d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 4363d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed a = SkIntToFixed(a0) + 0x2000; 4373d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed r = SkIntToFixed(r0) + 0x2000; 4383d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed g = SkIntToFixed(g0) + 0x2000; 4393d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkUFixed b = SkIntToFixed(b0) + 0x2000; 440d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com 441d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com /* 442d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Our dither-cell (spatially) is 443d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 0 2 444d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * 3 1 445d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * Where 446d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [0] -> [-1/8 ... 1/8 ) values near 0 447d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [1] -> [ 1/8 ... 3/8 ) values near 1/4 448d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [2] -> [ 3/8 ... 5/8 ) values near 1/2 449d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com * [3] -> [ 5/8 ... 7/8 ) values near 3/4 450d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com */ 451589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 4523d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com if (0xFF == a0 && 0 == da) { 453d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 454d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPackARGB32(0xFF, (r + 0 ) >> 16, 455d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 456d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 457d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPackARGB32(0xFF, (r + 0x8000) >> 16, 458d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 459d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 460d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPackARGB32(0xFF, (r + 0xC000) >> 16, 461d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 462d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 463d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPackARGB32(0xFF, (r + 0x4000) >> 16, 464d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 465d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 466d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 467d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 468d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 469d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 470d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 4713d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else if (interpInPremul) { 4723d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com do { 4733d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*0] = SkPackARGB32((a + 0 ) >> 16, 4743d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0 ) >> 16, 4753d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0 ) >> 16, 4763d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0 ) >> 16); 4773d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*1] = SkPackARGB32((a + 0x8000) >> 16, 4783d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x8000) >> 16, 4793d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x8000) >> 16, 4803d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x8000) >> 16); 4813d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*2] = SkPackARGB32((a + 0xC000) >> 16, 4823d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0xC000) >> 16, 4833d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0xC000) >> 16, 4843d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0xC000) >> 16); 4853d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache[kCache32Count*3] = SkPackARGB32((a + 0x4000) >> 16, 4863d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (r + 0x4000) >> 16, 4873d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (g + 0x4000) >> 16, 4883d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com (b + 0x4000) >> 16); 4893d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com cache += 1; 4903d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com a += da; 4913d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com r += dr; 4923d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com g += dg; 4933d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com b += db; 4943d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } while (--count != 0); 4953d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com } else { // interpolate in unpreml space 496d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com do { 497d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*0] = SkPremultiplyARGBInline((a + 0 ) >> 16, 498d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0 ) >> 16, 499d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0 ) >> 16, 500d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0 ) >> 16); 501d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*1] = SkPremultiplyARGBInline((a + 0x8000) >> 16, 502d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x8000) >> 16, 503d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x8000) >> 16, 504d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x8000) >> 16); 505d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*2] = SkPremultiplyARGBInline((a + 0xC000) >> 16, 506d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0xC000) >> 16, 507d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0xC000) >> 16, 508d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0xC000) >> 16); 509d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache[kCache32Count*3] = SkPremultiplyARGBInline((a + 0x4000) >> 16, 510d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (r + 0x4000) >> 16, 511d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (g + 0x4000) >> 16, 512d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com (b + 0x4000) >> 16); 513d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com cache += 1; 514d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com a += da; 515d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com r += dr; 516d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com g += dg; 517d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com b += db; 518d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } while (--count != 0); 519d8e0d6a87d56ece202cc529ec9269da3dcd3d6a8reed@google.com } 520589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 521589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 522589708bf7c706348b763e8277004cb160b202bdbrileya@google.comstatic inline int SkFixedToFFFF(SkFixed x) { 523589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT((unsigned)x <= SK_Fixed1); 524589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return x - (x >> 16); 525589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 526589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 52787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgconst uint16_t* SkGradientShaderBase::GradientShaderCache::getCache16() { 52887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkOnce(&fCache16Inited, &fCache16Mutex, SkGradientShaderBase::GradientShaderCache::initCache16, 52987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org this); 53087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(fCache16); 53187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org return fCache16; 53287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 533589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 53487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::initCache16(GradientShaderCache* cache) { 53587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // double the count for dither entries 53687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org const int entryCount = kCache16Count * 2; 53787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org const size_t allocSize = sizeof(uint16_t) * entryCount; 53887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 53987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(NULL == cache->fCache16Storage); 54087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache16Storage = (uint16_t*)sk_malloc_throw(allocSize); 54187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache16 = cache->fCache16Storage; 54287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (cache->fShader.fColorCount == 2) { 54387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build16bitCache(cache->fCache16, cache->fShader.fOrigColors[0], 54487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[1], kCache16Count); 54587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } else { 54687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Rec* rec = cache->fShader.fRecs; 54787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int prevIndex = 0; 54887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org for (int i = 1; i < cache->fShader.fColorCount; i++) { 54987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache16Shift; 55087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(nextIndex < kCache16Count); 55187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 55287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (nextIndex > prevIndex) 55387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build16bitCache(cache->fCache16 + prevIndex, cache->fShader.fOrigColors[i-1], 55487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[i], nextIndex - prevIndex + 1); 55587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org prevIndex = nextIndex; 556589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 55787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } 558589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 559589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 56087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgconst SkPMColor* SkGradientShaderBase::GradientShaderCache::getCache32() { 56187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkOnce(&fCache32Inited, &fCache32Mutex, SkGradientShaderBase::GradientShaderCache::initCache32, 56287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org this); 56387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(fCache32); 56487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org return fCache32; 56587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 566589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 56787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgvoid SkGradientShaderBase::GradientShaderCache::initCache32(GradientShaderCache* cache) { 568e5ea500d4714a7d84de2bf913e81be3b65d2de68reed const int kNumberOfDitherRows = 4; 569e5ea500d4714a7d84de2bf913e81be3b65d2de68reed const SkImageInfo info = SkImageInfo::MakeN32Premul(kCache32Count, kNumberOfDitherRows); 57087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 57187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(NULL == cache->fCache32PixelRef); 57287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache32PixelRef = SkMallocPixelRef::NewAllocate(info, 0, NULL); 57387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCache32 = (SkPMColor*)cache->fCache32PixelRef->getAddr(); 57487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (cache->fShader.fColorCount == 2) { 57587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build32bitCache(cache->fCache32, cache->fShader.fOrigColors[0], 57687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[1], kCache32Count, cache->fCacheAlpha, 57787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fGradFlags); 57887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } else { 57987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Rec* rec = cache->fShader.fRecs; 58087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int prevIndex = 0; 58187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org for (int i = 1; i < cache->fShader.fColorCount; i++) { 58287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org int nextIndex = SkFixedToFFFF(rec[i].fPos) >> kCache32Shift; 58387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkASSERT(nextIndex < kCache32Count); 58487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 58587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (nextIndex > prevIndex) 58687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org Build32bitCache(cache->fCache32 + prevIndex, cache->fShader.fOrigColors[i-1], 58787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fShader.fOrigColors[i], nextIndex - prevIndex + 1, 58887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org cache->fCacheAlpha, cache->fShader.fGradFlags); 58987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org prevIndex = nextIndex; 59053783b026a00683c1fb504127c3398dabb61ea73commit-bot@chromium.org } 59187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } 59287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org} 59387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org 59487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org/* 59587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org * The gradient holds a cache for the most recent value of alpha. Successive 59687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org * callers with the same alpha value will share the same cache. 59787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org */ 59887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.orgSkGradientShaderBase::GradientShaderCache* SkGradientShaderBase::refCache(U8CPU alpha) const { 59987fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkAutoMutexAcquire ama(fCacheMutex); 60087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org if (!fCache || fCache->getAlpha() != alpha) { 60187fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache.reset(SkNEW_ARGS(GradientShaderCache, (alpha, *this))); 60287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org } 60387fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // Increment the ref counter inside the mutex to ensure the returned pointer is still valid. 60487fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // Otherwise, the pointer may have been overwritten on a different thread before the object's 60587fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org // ref count was incremented. 60687fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org fCache.get()->ref(); 60787fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org return fCache; 608589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 609589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 610d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungemanSK_DECLARE_STATIC_MUTEX(gGradientCacheMutex); 611589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/* 612589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * Because our caller might rebuild the same (logically the same) gradient 613589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * over and over, we'd like to return exactly the same "bitmap" if possible, 614589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * allowing the client to utilize a cache of our bitmap (e.g. with a GPU). 615589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * To do that, we maintain a private cache of built-bitmaps, based on our 616589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * colors and positions. Note: we don't try to flatten the fMapper, so if one 617589708bf7c706348b763e8277004cb160b202bdbrileya@google.com * is present, we skip the cache for now. 618589708bf7c706348b763e8277004cb160b202bdbrileya@google.com */ 6191c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.comvoid SkGradientShaderBase::getGradientTableBitmap(SkBitmap* bitmap) const { 620589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // our caller assumes no external alpha, so we ensure that our cache is 621589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // built with 0xFF 62287fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org SkAutoTUnref<GradientShaderCache> cache(this->refCache(0xFF)); 623589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 6243d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com // build our key: [numColors + colors[] + {positions[]} + flags ] 6253d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int count = 1 + fColorCount + 1; 626589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 627589708bf7c706348b763e8277004cb160b202bdbrileya@google.com count += fColorCount - 1; // fRecs[].fPos 628589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 629589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 630589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkAutoSTMalloc<16, int32_t> storage(count); 631589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int32_t* buffer = storage.get(); 632589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 633589708bf7c706348b763e8277004cb160b202bdbrileya@google.com *buffer++ = fColorCount; 634589708bf7c706348b763e8277004cb160b202bdbrileya@google.com memcpy(buffer, fOrigColors, fColorCount * sizeof(SkColor)); 635589708bf7c706348b763e8277004cb160b202bdbrileya@google.com buffer += fColorCount; 636589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount > 2) { 637589708bf7c706348b763e8277004cb160b202bdbrileya@google.com for (int i = 1; i < fColorCount; i++) { 638589708bf7c706348b763e8277004cb160b202bdbrileya@google.com *buffer++ = fRecs[i].fPos; 639589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 640589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 6413d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com *buffer++ = fGradFlags; 642589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkASSERT(buffer - storage.get() == count); 643589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 644589708bf7c706348b763e8277004cb160b202bdbrileya@google.com /////////////////////////////////// 645589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 646a6cac4ce3896669e1b5935def0a84b4456ec9777reed static SkGradientBitmapCache* gCache; 647589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // each cache cost 1K of RAM, since each bitmap will be 1x256 at 32bpp 648589708bf7c706348b763e8277004cb160b202bdbrileya@google.com static const int MAX_NUM_CACHED_GRADIENT_BITMAPS = 32; 649d6aeb6dc8fe21066f1a2c4813a4256a3acd3edf5bungeman SkAutoMutexAcquire ama(gGradientCacheMutex); 650589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 651589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (NULL == gCache) { 652a6cac4ce3896669e1b5935def0a84b4456ec9777reed gCache = SkNEW_ARGS(SkGradientBitmapCache, (MAX_NUM_CACHED_GRADIENT_BITMAPS)); 653589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 654589708bf7c706348b763e8277004cb160b202bdbrileya@google.com size_t size = count * sizeof(int32_t); 655589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 656589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (!gCache->find(storage.get(), size, bitmap)) { 657589708bf7c706348b763e8277004cb160b202bdbrileya@google.com // force our cahce32pixelref to be built 65887fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org (void)cache->getCache32(); 659a3264e53ee3f3c5d6a2c813df7e44b5b96d207f2commit-bot@chromium.org bitmap->setInfo(SkImageInfo::MakeN32Premul(kCache32Count, 1)); 66087fcd950198a16211b3988610beebb5ca5bcf323commit-bot@chromium.org bitmap->setPixelRef(cache->getCache32PixelRef()); 661589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 662589708bf7c706348b763e8277004cb160b202bdbrileya@google.com gCache->add(storage.get(), size, *bitmap); 663589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 664589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 665589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 66644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.orgvoid SkGradientShaderBase::commonAsAGradient(GradientInfo* info, bool flipGrad) const { 667589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info) { 668589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorCount >= fColorCount) { 66944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkColor* colorLoc; 67044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org Rec* recLoc; 67144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (flipGrad && (info->fColors || info->fColorOffsets)) { 67244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorStorage(fColorCount); 67344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, Rec> recStorage(fColorCount); 67444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorLoc = colorStorage.get(); 67544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recLoc = recStorage.get(); 67644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org FlipGradientColors(colorLoc, recLoc, fOrigColors, fRecs, fColorCount); 67744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 67844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorLoc = fOrigColors; 67944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org recLoc = fRecs; 68044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 681589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColors) { 68244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org memcpy(info->fColors, colorLoc, fColorCount * sizeof(SkColor)); 683589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 684589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (info->fColorOffsets) { 685589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (fColorCount == 2) { 686589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[0] = 0; 687589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorOffsets[1] = SK_Scalar1; 688589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } else if (fColorCount > 2) { 68976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 69044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org info->fColorOffsets[i] = SkFixedToScalar(recLoc[i].fPos); 69176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 692589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 693589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 694589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 695589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fColorCount = fColorCount; 696589708bf7c706348b763e8277004cb160b202bdbrileya@google.com info->fTileMode = fTileMode; 6973d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com info->fGradientFlags = fGradFlags; 698589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 699589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 700589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 7010f10f7bf1fb43ca6346dc220a076773b1f19a367commit-bot@chromium.org#ifndef SK_IGNORE_TO_STRING 70276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.comvoid SkGradientShaderBase::toString(SkString* str) const { 70376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 70476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendf("%d colors: ", fColorCount); 70576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 70676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 707f3f5bad7ded35265c0b5d042cc4174386b197a33robertphillips str->appendHex(fOrigColors[i], 8); 70876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 70976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 71076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 71176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 71276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 71376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (fColorCount > 2) { 71476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" points: ("); 71576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com for (int i = 0; i < fColorCount; ++i) { 71676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->appendScalar(SkFixedToScalar(fRecs[i].fPos)); 71776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com if (i < fColorCount-1) { 71876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(", "); 71976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 72076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 72176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(")"); 72276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com } 72376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 72476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com static const char* gTileModeName[SkShader::kTileModeCount] = { 72576f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com "clamp", "repeat", "mirror" 72676f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com }; 72776f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 72876f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(" "); 72976f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com str->append(gTileModeName[fTileMode]); 73076f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 73176f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com this->INHERITED::toString(str); 73276f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com} 73376f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com#endif 73476f9e938df0b5826fd4c80b854ceafaf385cfbe1robertphillips@google.com 735589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 736589708bf7c706348b763e8277004cb160b202bdbrileya@google.com/////////////////////////////////////////////////////////////////////////////// 737589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 7381b74730c6bc1de0b638c4c6e18e71f520bb18249reed// Return true if these parameters are valid/legal/safe to construct a gradient 7391b74730c6bc1de0b638c4c6e18e71f520bb18249reed// 7401b74730c6bc1de0b638c4c6e18e71f520bb18249reedstatic bool valid_grad(const SkColor colors[], const SkScalar pos[], int count, unsigned tileMode) { 7411b74730c6bc1de0b638c4c6e18e71f520bb18249reed return NULL != colors && count >= 1 && tileMode < (unsigned)SkShader::kTileModeCount; 7421b74730c6bc1de0b638c4c6e18e71f520bb18249reed} 7431b74730c6bc1de0b638c4c6e18e71f520bb18249reed 744589708bf7c706348b763e8277004cb160b202bdbrileya@google.com// assumes colors is SkColor* and pos is SkScalar* 745589708bf7c706348b763e8277004cb160b202bdbrileya@google.com#define EXPAND_1_COLOR(count) \ 746589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkColor tmp[2]; \ 747589708bf7c706348b763e8277004cb160b202bdbrileya@google.com do { \ 748589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (1 == count) { \ 749589708bf7c706348b763e8277004cb160b202bdbrileya@google.com tmp[0] = tmp[1] = colors[0]; \ 750589708bf7c706348b763e8277004cb160b202bdbrileya@google.com colors = tmp; \ 751589708bf7c706348b763e8277004cb160b202bdbrileya@google.com pos = NULL; \ 752589708bf7c706348b763e8277004cb160b202bdbrileya@google.com count = 2; \ 753589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } \ 754589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } while (0) 755589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 756437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.comstatic void desc_init(SkGradientShaderBase::Descriptor* desc, 757addf2edf3da20f053daa3897cfe2c52d7369a7b1reed const SkColor colors[], const SkScalar pos[], int colorCount, 758addf2edf3da20f053daa3897cfe2c52d7369a7b1reed SkShader::TileMode mode, uint32_t flags, const SkMatrix* localMatrix) { 7596c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fColors = colors; 7606c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fPos = pos; 7616c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fCount = colorCount; 7626c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fTileMode = mode; 7636c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org desc->fGradFlags = flags; 764addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc->fLocalMatrix = localMatrix; 765437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com} 766437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com 767589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateLinear(const SkPoint pts[2], 768589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 769589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 770589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7719c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 7729c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 7731b74730c6bc1de0b638c4c6e18e71f520bb18249reed if (!pts) { 7741b74730c6bc1de0b638c4c6e18e71f520bb18249reed return NULL; 7751b74730c6bc1de0b638c4c6e18e71f520bb18249reed } 7761b74730c6bc1de0b638c4c6e18e71f520bb18249reed if (!valid_grad(colors, pos, colorCount, mode)) { 777589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 778589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 779589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 780589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 781437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 782addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, mode, flags, localMatrix); 783addf2edf3da20f053daa3897cfe2c52d7369a7b1reed return SkNEW_ARGS(SkLinearGradient, (pts, desc)); 784589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 785589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 786589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateRadial(const SkPoint& center, SkScalar radius, 787589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 788589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], int colorCount, 789589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 7909c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 7919c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 7921b74730c6bc1de0b638c4c6e18e71f520bb18249reed if (radius <= 0) { 7931b74730c6bc1de0b638c4c6e18e71f520bb18249reed return NULL; 7941b74730c6bc1de0b638c4c6e18e71f520bb18249reed } 7951b74730c6bc1de0b638c4c6e18e71f520bb18249reed if (!valid_grad(colors, pos, colorCount, mode)) { 796589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 797589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 798589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 799589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 800437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 801addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, mode, flags, localMatrix); 802addf2edf3da20f053daa3897cfe2c52d7369a7b1reed return SkNEW_ARGS(SkRadialGradient, (center, radius, desc)); 803589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 804589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 805589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointRadial(const SkPoint& start, 806589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar startRadius, 807589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkPoint& end, 808589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkScalar endRadius, 809589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 810589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 811589708bf7c706348b763e8277004cb160b202bdbrileya@google.com int colorCount, 812589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SkShader::TileMode mode, 8139c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 8149c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 8151b74730c6bc1de0b638c4c6e18e71f520bb18249reed if (startRadius < 0 || endRadius < 0) { 8161b74730c6bc1de0b638c4c6e18e71f520bb18249reed return NULL; 8171b74730c6bc1de0b638c4c6e18e71f520bb18249reed } 8181b74730c6bc1de0b638c4c6e18e71f520bb18249reed if (!valid_grad(colors, pos, colorCount, mode)) { 819589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 820589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 821589708bf7c706348b763e8277004cb160b202bdbrileya@google.com EXPAND_1_COLOR(colorCount); 822fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.com 823437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 824addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, mode, flags, localMatrix); 825589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return SkNEW_ARGS(SkTwoPointRadialGradient, 826addf2edf3da20f053daa3897cfe2c52d7369a7b1reed (start, startRadius, end, endRadius, desc)); 827589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 828589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 829589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateTwoPointConical(const SkPoint& start, 8303d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar startRadius, 8313d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkPoint& end, 8323d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkScalar endRadius, 8333d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkColor colors[], 8343d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com const SkScalar pos[], 8353d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com int colorCount, 8363d3a860d0ba878adb905512a45c500a67532b0a3reed@google.com SkShader::TileMode mode, 8379c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 8389c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 8391b74730c6bc1de0b638c4c6e18e71f520bb18249reed if (startRadius < 0 || endRadius < 0) { 8401b74730c6bc1de0b638c4c6e18e71f520bb18249reed return NULL; 8411b74730c6bc1de0b638c4c6e18e71f520bb18249reed } 8421b74730c6bc1de0b638c4c6e18e71f520bb18249reed if (!valid_grad(colors, pos, colorCount, mode)) { 843589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 844589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 845589708bf7c706348b763e8277004cb160b202bdbrileya@google.com if (start == end && startRadius == endRadius) { 846e1085e0381a4abfe440e664c1a0669f3676a8092reed return SkShader::CreateEmptyShader(); 847589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 84844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 8491ee7c6a18a511cde879941324f173ad4c8c123f8rileya@google.com EXPAND_1_COLOR(colorCount); 850589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 85144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org bool flipGradient = startRadius > endRadius; 85244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 853437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 85444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 85544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (!flipGradient) { 856addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, mode, flags, localMatrix); 85744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org return SkNEW_ARGS(SkTwoPointConicalGradient, 858addf2edf3da20f053daa3897cfe2c52d7369a7b1reed (start, startRadius, end, endRadius, flipGradient, desc)); 85944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 86044d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkColor> colorsNew(colorCount); 86144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org SkAutoSTArray<8, SkScalar> posNew(colorCount); 86244d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < colorCount; ++i) { 86344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org colorsNew[i] = colors[colorCount - i - 1]; 86444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 86544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 86644d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org if (pos) { 86744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org for (int i = 0; i < colorCount; ++i) { 86844d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org posNew[i] = 1 - pos[colorCount - i - 1]; 86944d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 870addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colorsNew.get(), posNew.get(), colorCount, mode, flags, localMatrix); 87144d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } else { 872addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colorsNew.get(), NULL, colorCount, mode, flags, localMatrix); 87344d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 87444d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org 87544d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org return SkNEW_ARGS(SkTwoPointConicalGradient, 876addf2edf3da20f053daa3897cfe2c52d7369a7b1reed (end, endRadius, start, startRadius, flipGradient, desc)); 87744d83c1e81b0555efa94f78e2a53b862208cdd06commit-bot@chromium.org } 878589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 879589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 880589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSkShader* SkGradientShader::CreateSweep(SkScalar cx, SkScalar cy, 881589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkColor colors[], 882589708bf7c706348b763e8277004cb160b202bdbrileya@google.com const SkScalar pos[], 88383f23d87f1d67e6e73873e1ef7cda621c43703a0commit-bot@chromium.org int colorCount, 8849c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org uint32_t flags, 8859c9005a347e9996f357bd79591bd34f74f8bbc66commit-bot@chromium.org const SkMatrix* localMatrix) { 8861b74730c6bc1de0b638c4c6e18e71f520bb18249reed if (!valid_grad(colors, pos, colorCount, SkShader::kClamp_TileMode)) { 887589708bf7c706348b763e8277004cb160b202bdbrileya@google.com return NULL; 888589708bf7c706348b763e8277004cb160b202bdbrileya@google.com } 889437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com EXPAND_1_COLOR(colorCount); 890589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 891437d6eb4e0d91710fdeb7ecedb694f658458ae00reed@google.com SkGradientShaderBase::Descriptor desc; 892addf2edf3da20f053daa3897cfe2c52d7369a7b1reed desc_init(&desc, colors, pos, colorCount, SkShader::kClamp_TileMode, flags, localMatrix); 893addf2edf3da20f053daa3897cfe2c52d7369a7b1reed return SkNEW_ARGS(SkSweepGradient, (cx, cy, desc)); 894589708bf7c706348b763e8277004cb160b202bdbrileya@google.com} 895589708bf7c706348b763e8277004cb160b202bdbrileya@google.com 896589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_START(SkGradientShader) 897589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkLinearGradient) 898589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkRadialGradient) 899589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkSweepGradient) 900589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointRadialGradient) 901589708bf7c706348b763e8277004cb160b202bdbrileya@google.com SK_DEFINE_FLATTENABLE_REGISTRAR_ENTRY(SkTwoPointConicalGradient) 902589708bf7c706348b763e8277004cb160b202bdbrileya@google.comSK_DEFINE_FLATTENABLE_REGISTRAR_GROUP_END 903d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 904d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com/////////////////////////////////////////////////////////////////////////////// 905d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 906cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#if SK_SUPPORT_GPU 907cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 908b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com#include "effects/GrTextureStripAtlas.h" 909605dd0fbce9dbb2a0d3313e13e161f2bd54870d7egdaniel#include "GrInvariantOutput.h" 91030ba436f04e61d4505fb854d5fc56079636e0788joshualitt#include "gl/builders/GrGLProgramBuilder.h" 911cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#include "SkGr.h" 912cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com 913eb2a6761654307e8aeeeaabdd63c6bf9ab0411e9joshualittGrGLGradientEffect::GrGLGradientEffect() 914eb2a6761654307e8aeeeaabdd63c6bf9ab0411e9joshualitt : fCachedYCoord(SK_ScalarMax) { 915d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 916d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 9170707c29413a5a3cc1c2d14b8c65b3692af5c7411bsalomon@google.comGrGLGradientEffect::~GrGLGradientEffect() { } 918d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 91960030bc2e1d9de455eb4ab2351ae0be494c97b4ejoshualittvoid GrGLGradientEffect::emitUniforms(GrGLFPBuilder* builder, const GrGradientEffect& ge) { 92082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 92160030bc2e1d9de455eb4ab2351ae0be494c97b4ejoshualitt if (SkGradientShaderBase::kTwo_GpuColorType == ge.getColorType()) { // 2 Color case 92230ba436f04e61d4505fb854d5fc56079636e0788joshualitt fColorStartUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, 923422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon kVec4f_GrSLType, kDefault_GrSLPrecision, 924422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon "GradientStartColor"); 92530ba436f04e61d4505fb854d5fc56079636e0788joshualitt fColorEndUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, 926422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon kVec4f_GrSLType, kDefault_GrSLPrecision, 927422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon "GradientEndColor"); 9289a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 92960030bc2e1d9de455eb4ab2351ae0be494c97b4ejoshualitt } else if (SkGradientShaderBase::kThree_GpuColorType == ge.getColorType()) { // 3 Color Case 93030ba436f04e61d4505fb854d5fc56079636e0788joshualitt fColorStartUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, 931422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon kVec4f_GrSLType, kDefault_GrSLPrecision, 932422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon "GradientStartColor"); 93330ba436f04e61d4505fb854d5fc56079636e0788joshualitt fColorMidUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, 934422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon kVec4f_GrSLType, kDefault_GrSLPrecision, 935422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon "GradientMidColor"); 93630ba436f04e61d4505fb854d5fc56079636e0788joshualitt fColorEndUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, 937422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon kVec4f_GrSLType, kDefault_GrSLPrecision, 938422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon "GradientEndColor"); 93982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 94082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { // if not a fast case 94130ba436f04e61d4505fb854d5fc56079636e0788joshualitt fFSYUni = builder->addUniform(GrGLProgramBuilder::kFragment_Visibility, 942422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon kFloat_GrSLType, kDefault_GrSLPrecision, 943422f56f6e51c2f6a6ab425573b4d790f0157f883bsalomon "GradientYCoordFS"); 94482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 94582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 94682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 9477510b224e52b9518a8ddf7418db0e9c258f79539kkinnunenstatic inline void set_color_uni(const GrGLProgramDataManager& pdman, 9487510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen const GrGLProgramDataManager::UniformHandle uni, 94982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color) { 9507510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen pdman.set4f(uni, 9517510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetR(*color) / 255.f, 9527510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetG(*color) / 255.f, 9537510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetB(*color) / 255.f, 9547510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetA(*color) / 255.f); 95582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com} 95682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 9577510b224e52b9518a8ddf7418db0e9c258f79539kkinnunenstatic inline void set_mul_color_uni(const GrGLProgramDataManager& pdman, 9587510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen const GrGLProgramDataManager::UniformHandle uni, 95982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const SkColor* color){ 96082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float a = SkColorGetA(*color) / 255.f; 96182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com float aDiv255 = a / 255.f; 9627510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen pdman.set4f(uni, 9637510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetR(*color) * aDiv255, 9647510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetG(*color) * aDiv255, 9657510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen SkColorGetB(*color) * aDiv255, 9667510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen a); 967b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 968b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 9697510b224e52b9518a8ddf7418db0e9c258f79539kkinnunenvoid GrGLGradientEffect::setData(const GrGLProgramDataManager& pdman, 970b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt const GrProcessor& processor) { 97182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 972b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt const GrGradientEffect& e = processor.cast<GrGradientEffect>(); 973d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 97482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 975996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == e.getColorType()){ 97682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 97782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 9787510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorStartUni, e.getColors(0)); 9797510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorEndUni, e.getColors(1)); 98082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 9817510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorStartUni, e.getColors(0)); 9827510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorEndUni, e.getColors(1)); 98382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 98482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 985996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == e.getColorType()){ 98682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 98782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 9887510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorStartUni, e.getColors(0)); 9897510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorMidUni, e.getColors(1)); 9907510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_mul_color_uni(pdman, fColorEndUni, e.getColors(2)); 99182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 9927510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorStartUni, e.getColors(0)); 9937510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorMidUni, e.getColors(1)); 9947510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen set_color_uni(pdman, fColorEndUni, e.getColors(2)); 99582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 99682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 9979a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 99882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkScalar yCoord = e.getYCoord(); 99982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (yCoord != fCachedYCoord) { 10007510b224e52b9518a8ddf7418db0e9c258f79539kkinnunen pdman.set1f(fFSYUni, yCoord); 100182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fCachedYCoord = yCoord; 100282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1003b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 1004b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com} 1005b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com 100682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 1007b0a8a377f832c59cee939ad721e1f87d378b7142joshualittuint32_t GrGLGradientEffect::GenBaseGradientKey(const GrProcessor& processor) { 1008b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt const GrGradientEffect& e = processor.cast<GrGradientEffect>(); 10099a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 101063e99f7a03b2ac90ae7a00232674fd39c0bdcc68bsalomon uint32_t key = 0; 101182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 1012996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == e.getColorType()) { 101382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kTwoColorKey; 1014267ce482b54f46097584e0f9350ec74aa6a2cd44joshualitt } else if (SkGradientShaderBase::kThree_GpuColorType == e.getColorType()) { 101582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kThreeColorKey; 101682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 101782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 101882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (GrGradientEffect::kBeforeInterp_PremulType == e.getPremulType()) { 101982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com key |= kPremulBeforeInterpKey; 102082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 102182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 102282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return key; 1023d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com} 1024d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com 10251598899975ecc85b003a59740b588d1ddbcedb09joshualittvoid GrGLGradientEffect::emitColor(GrGLFPBuilder* builder, 102660030bc2e1d9de455eb4ab2351ae0be494c97b4ejoshualitt const GrGradientEffect& ge, 102782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* gradientTValue, 102882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* outputColor, 102982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com const char* inputColor, 10303390b9ac9ad69a6e772c2b957d75d19611239025commit-bot@chromium.org const TextureSamplerArray& samplers) { 10311598899975ecc85b003a59740b588d1ddbcedb09joshualitt GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder(); 103260030bc2e1d9de455eb4ab2351ae0be494c97b4ejoshualitt if (SkGradientShaderBase::kTwo_GpuColorType == ge.getColorType()){ 103330ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\tvec4 colorTemp = mix(%s, %s, clamp(%s, 0.0, 1.0));\n", 103482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorStartUni).c_str(), 103582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str(), 103682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 103782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // Note that we could skip this step if both colors are known to be opaque. Two 103882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // considerations: 103982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The gradient SkShader reporting opaque is more restrictive than necessary in the two pt 104082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // case. Make sure the key reflects this optimization (and note that it can use the same 104182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // shader as thekBeforeIterp case). This same optimization applies to the 3 color case below. 104260030bc2e1d9de455eb4ab2351ae0be494c97b4ejoshualitt if (GrGradientEffect::kAfterInterp_PremulType == ge.getPremulType()) { 104330ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 104482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 104582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 104630ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\t%s = %s;\n", outputColor, 1047a34995e18b1f0a7d8c9f23451718bb30ff0105b0commit-bot@chromium.org (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 104860030bc2e1d9de455eb4ab2351ae0be494c97b4ejoshualitt } else if (SkGradientShaderBase::kThree_GpuColorType == ge.getColorType()) { 104930ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\tfloat oneMinus2t = 1.0 - (2.0 * (%s));\n", 105082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue); 105130ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\tvec4 colorTemp = clamp(oneMinus2t, 0.0, 1.0) * %s;\n", 10520694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorStartUni).c_str()); 10530694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org if (kTegra3_GrGLRenderer == builder->ctxInfo().renderer()) { 10540694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // The Tegra3 compiler will sometimes never return if we have 10550694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org // min(abs(oneMinus2t), 1.0), or do the abs first in a separate expression. 105630ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppend("\tfloat minAbs = abs(oneMinus2t);\n"); 105730ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppend("\tminAbs = minAbs > 1.0 ? 1.0 : minAbs;\n"); 105830ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\tcolorTemp += (1.0 - minAbs) * %s;\n", 10590694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 10600694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } else { 106130ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\tcolorTemp += (1.0 - min(abs(oneMinus2t), 1.0)) * %s;\n", 10620694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org builder->getUniformVariable(fColorMidUni).c_str()); 10630694ea7f6a16e946972b9c625f434e80eb42bb5fcommit-bot@chromium.org } 106430ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\tcolorTemp += clamp(-oneMinus2t, 0.0, 1.0) * %s;\n", 106582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fColorEndUni).c_str()); 106660030bc2e1d9de455eb4ab2351ae0be494c97b4ejoshualitt if (GrGradientEffect::kAfterInterp_PremulType == ge.getPremulType()) { 106730ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppend("\tcolorTemp.rgb *= colorTemp.a;\n"); 106882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 106934bcb9f80336fe0dc56ad5f67aeb0859bf84d92ebsalomon@google.com 107030ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\t%s = %s;\n", outputColor, 1071a34995e18b1f0a7d8c9f23451718bb30ff0105b0commit-bot@chromium.org (GrGLSLExpr4(inputColor) * GrGLSLExpr4("colorTemp")).c_str()); 107282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 107330ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\tvec2 coord = vec2(%s, %s);\n", 107482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com gradientTValue, 107582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com builder->getUniformVariable(fFSYUni).c_str()); 107630ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppendf("\t%s = ", outputColor); 107730ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->appendTextureLookupAndModulate(inputColor, 107882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com samplers[0], 107982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com "coord"); 108030ba436f04e61d4505fb854d5fc56079636e0788joshualitt fsBuilder->codeAppend(";\n"); 108182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1082d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1083d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1084d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com///////////////////////////////////////////////////////////////////// 1085d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1086fbfcd5602128ec010c82cb733c9cdc0a3254f9f3rmistry@google.comGrGradientEffect::GrGradientEffect(GrContext* ctx, 10871c6d64b78b24083ee9fd7411dac8a4a7e2d03a3crileya@google.com const SkGradientShaderBase& shader, 1088d8b5faca043100d7a1e4594b4d10e462532af390bsalomon@google.com const SkMatrix& matrix, 108950db75c871b203081a32190ab173f13c785a147fbsalomon@google.com SkShader::TileMode tileMode) { 1090d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1091371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com fIsOpaque = shader.isOpaque(); 1092371e105da5d9fdfff3b4242b37ff6fc09214c8c8bsalomon@google.com 1093996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org fColorType = shader.getGpuColorType(&fColors[0]); 109482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 109582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // The two and three color specializations do not currently support tiling. 1096996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == fColorType || 1097996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org SkGradientShaderBase::kThree_GpuColorType == fColorType) { 1098996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org fRow = -1; 10998a777a5e6ad081f54ec169dcf714343c38517161skia.committer@gmail.com 11006c5aea2f10033d527b7785dd0d7b7d5ca65bccdacommit-bot@chromium.org if (SkGradientShader::kInterpolateColorsInPremul_Flag & shader.getGradFlags()) { 110182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 110282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 110382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kAfterInterp_PremulType; 110482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 110577af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com fCoordTransform.reset(kCoordSet, matrix); 1106b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } else { 110782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // doesn't matter how this is set, just be consistent because it is part of the effect key. 110882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fPremulType = kBeforeInterp_PremulType; 110982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com SkBitmap bitmap; 111082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com shader.getGradientTableBitmap(&bitmap); 11119a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 111282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureStripAtlas::Desc desc; 111382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fWidth = bitmap.width(); 111482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fHeight = 32; 111582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fRowHeight = bitmap.height(); 111682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com desc.fContext = ctx; 11173adcc3403377c0b9a7afde6db8e0432325413a10commit-bot@chromium.org desc.fConfig = SkImageInfo2GrPixelConfig(bitmap.info()); 111882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fAtlas = GrTextureStripAtlas::GetAtlas(desc); 111949f085dddff10473b6ebf832a974288300224e60bsalomon SkASSERT(fAtlas); 112082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 112182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com // We always filter the gradient table. Each table is one row of a texture, always y-clamp. 112282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com GrTextureParams params; 112382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setFilterMode(GrTextureParams::kBilerp_FilterMode); 112482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com params.setTileModeX(tileMode); 112582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 112682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fRow = fAtlas->lockRow(bitmap); 112782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (-1 != fRow) { 1128c6327a8f7e7e282c0b3a95049c75db7a8f92c693bsalomon fYCoord = fAtlas->getYOffset(fRow) + SK_ScalarHalf * fAtlas->getNormalizedTexelHeight(); 11299f876a37d8b80ef04ccbc7755cf4572aecc33981bsalomon fCoordTransform.reset(kCoordSet, matrix, fAtlas->getTexture(), params.filterMode()); 113082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(fAtlas->getTexture(), params); 113182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } else { 1132bcf0a52d4f4221b158e68a06ba0c4cc4db011060bsalomon SkAutoTUnref<GrTexture> texture(GrRefCachedBitmapTexture(ctx, bitmap, ¶ms)); 11335f5a8d7599b8e248633ac122294b7a01401fedcbjoshualitt if (!texture) { 11345f5a8d7599b8e248633ac122294b7a01401fedcbjoshualitt return; 11355f5a8d7599b8e248633ac122294b7a01401fedcbjoshualitt } 11369f876a37d8b80ef04ccbc7755cf4572aecc33981bsalomon fCoordTransform.reset(kCoordSet, matrix, texture, params.filterMode()); 113782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fTextureAccess.reset(texture, params); 113882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com fYCoord = SK_ScalarHalf; 113982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 114082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com this->addTextureAccess(&fTextureAccess); 1141b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 114277af6805e5faea1e2a5c0220098aec9082f3a6e5bsalomon@google.com this->addCoordTransform(&fCoordTransform); 1143d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1144d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 1145d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.comGrGradientEffect::~GrGradientEffect() { 1146b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com if (this->useAtlas()) { 1147b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com fAtlas->unlockRow(fRow); 1148b3e50f23c57d058820701219e66b6bfb8e0681a4rileya@google.com } 1149d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com} 1150d7cc651b8da11d52ae90e910b948f5e2d15daaf9rileya@google.com 11510e08fc17e4718f7ce4e38f793695896473e96948bsalomonbool GrGradientEffect::onIsEqual(const GrFragmentProcessor& processor) const { 1152b0a8a377f832c59cee939ad721e1f87d378b7142joshualitt const GrGradientEffect& s = processor.cast<GrGradientEffect>(); 115382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 115482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (this->fColorType == s.getColorType()){ 115582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 1156996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org if (SkGradientShaderBase::kTwo_GpuColorType == fColorType) { 115782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 115882d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1)) { 115982d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 116082d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1161996402bddb4d886c38dee17341e5833500901933commit-bot@chromium.org } else if (SkGradientShaderBase::kThree_GpuColorType == fColorType) { 116282d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com if (*this->getColors(0) != *s.getColors(0) || 116382d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(1) != *s.getColors(1) || 116482d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com *this->getColors(2) != *s.getColors(2)) { 116582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 116682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 1167c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } else { 1168c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com if (fYCoord != s.getYCoord()) { 1169c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com return false; 1170c0de5d6b5fe312ec39a544fcefdb7673082a07b8robertphillips@google.com } 117182d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 11729a070f24f1450091dfe25cacec8bd375ec7a0e50skia.committer@gmail.com 1173420d7e9a79358908850c74192b4949375563449absalomon SkASSERT(this->useAtlas() == s.useAtlas()); 1174420d7e9a79358908850c74192b4949375563449absalomon return true; 117582d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com } 117682d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com 117782d1223aece4703bc9f3a3612cbabaa8c2f2809bbsalomon@google.com return false; 117868b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 117968b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 1180605dd0fbce9dbb2a0d3313e13e161f2bd54870d7egdanielvoid GrGradientEffect::onComputeInvariantOutput(GrInvariantOutput* inout) const { 1181ccb2e384a036f29d989d3c1468f879324e81a678egdaniel if (fIsOpaque) { 118256995b5cc00c9c83bd5fcf86bca9a67e939a96cbjoshualitt inout->mulByUnknownOpaqueFourComponents(); 118368b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } else { 118456995b5cc00c9c83bd5fcf86bca9a67e939a96cbjoshualitt inout->mulByUnknownFourComponents(); 118568b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com } 118668b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com} 118768b58c95384dd6c2fd389a5b4bbf8fc468819454bsalomon@google.com 1188e0e7cfe44bb9d66d76120a79e5275c294bacaa22commit-bot@chromium.orgint GrGradientEffect::RandomGradientParams(SkRandom* random, 1189d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkColor colors[], 1190d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkScalar** stops, 1191d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com SkShader::TileMode* tm) { 1192d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com int outColors = random->nextRangeU(1, kMaxRandomGradientColors); 1193d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1194d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com // if one color, omit stops, otherwise randomly decide whether or not to 1195d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com if (outColors == 1 || (outColors >= 2 && random->nextBool())) { 1196d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *stops = NULL; 1197d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1198d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 119981712883419f76e25d2ffec38a9438284a45a48dbsalomon@google.com SkScalar stop = 0.f; 1200d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com for (int i = 0; i < outColors; ++i) { 1201d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com colors[i] = random->nextU(); 120249f085dddff10473b6ebf832a974288300224e60bsalomon if (*stops) { 1203d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com (*stops)[i] = stop; 1204d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com stop = i < outColors - 1 ? stop + random->nextUScalar1() * (1.f - stop) : 1.f; 1205d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1206d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com } 1207d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com *tm = static_cast<SkShader::TileMode>(random->nextULessThan(SkShader::kTileModeCount)); 1208d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1209d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com return outColors; 1210d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com} 1211d472620458e2383e6dd949f4e1aaf61160717ffebsalomon@google.com 1212cf8fb1f6f03fc77f9927564f9ef9abeeeec508d2bsalomon@google.com#endif 1213