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/*
* Copyright 2017 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "GrProcessorSet.h"
#include "GrAppliedClip.h"
#include "GrCaps.h"
#include "GrXferProcessor.h"
#include "SkBlendModePriv.h"
#include "effects/GrPorterDuffXferProcessor.h"
const GrProcessorSet& GrProcessorSet::EmptySet() {
static GrProcessorSet gEmpty(GrProcessorSet::Empty::kEmpty);
return gEmpty;
}
GrProcessorSet GrProcessorSet::MakeEmptySet() {
return GrProcessorSet(GrProcessorSet::Empty::kEmpty);
}
GrProcessorSet::GrProcessorSet(GrPaint&& paint) : fXP(paint.getXPFactory()) {
fFlags = 0;
if (paint.numColorFragmentProcessors() <= kMaxColorProcessors) {
fColorFragmentProcessorCnt = paint.numColorFragmentProcessors();
fFragmentProcessors.reset(paint.numTotalFragmentProcessors());
int i = 0;
for (auto& fp : paint.fColorFragmentProcessors) {
SkASSERT(fp.get());
fFragmentProcessors[i++] = std::move(fp);
}
for (auto& fp : paint.fCoverageFragmentProcessors) {
SkASSERT(fp.get());
fFragmentProcessors[i++] = std::move(fp);
}
} else {
SkDebugf("Insane number of color fragment processors in paint. Dropping all processors.");
fColorFragmentProcessorCnt = 0;
}
}
GrProcessorSet::GrProcessorSet(SkBlendMode mode)
: fXP(SkBlendMode_AsXPFactory(mode))
, fColorFragmentProcessorCnt(0)
, fFragmentProcessorOffset(0)
, fFlags(0) {}
GrProcessorSet::GrProcessorSet(std::unique_ptr<GrFragmentProcessor> colorFP)
: fFragmentProcessors(1)
, fXP((const GrXPFactory*)nullptr)
, fColorFragmentProcessorCnt(1)
, fFragmentProcessorOffset(0)
, fFlags(0) {
SkASSERT(colorFP);
fFragmentProcessors[0] = std::move(colorFP);
}
GrProcessorSet::GrProcessorSet(GrProcessorSet&& that)
: fXP(std::move(that.fXP))
, fColorFragmentProcessorCnt(that.fColorFragmentProcessorCnt)
, fFragmentProcessorOffset(0)
, fFlags(that.fFlags) {
fFragmentProcessors.reset(that.fFragmentProcessors.count() - that.fFragmentProcessorOffset);
for (int i = 0; i < fFragmentProcessors.count(); ++i) {
fFragmentProcessors[i] =
std::move(that.fFragmentProcessors[i + that.fFragmentProcessorOffset]);
}
that.fColorFragmentProcessorCnt = 0;
that.fFragmentProcessors.reset(0);
}
GrProcessorSet::~GrProcessorSet() {
if (this->isFinalized() && this->xferProcessor()) {
this->xferProcessor()->unref();
}
}
SkString dump_fragment_processor_tree(const GrFragmentProcessor* fp, int indentCnt) {
SkString result;
SkString indentString;
for (int i = 0; i < indentCnt; ++i) {
indentString.append(" ");
}
result.appendf("%s%s %s \n", indentString.c_str(), fp->name(), fp->dumpInfo().c_str());
if (fp->numChildProcessors()) {
for (int i = 0; i < fp->numChildProcessors(); ++i) {
result += dump_fragment_processor_tree(&fp->childProcessor(i), indentCnt + 1);
}
}
return result;
}
SkString GrProcessorSet::dumpProcessors() const {
SkString result;
if (this->numFragmentProcessors()) {
if (this->numColorFragmentProcessors()) {
result.append("Color Fragment Processors:\n");
for (int i = 0; i < this->numColorFragmentProcessors(); ++i) {
result += dump_fragment_processor_tree(this->colorFragmentProcessor(i), 1);
}
} else {
result.append("No color fragment processors.\n");
}
if (this->numCoverageFragmentProcessors()) {
result.append("Coverage Fragment Processors:\n");
for (int i = 0; i < this->numColorFragmentProcessors(); ++i) {
result += dump_fragment_processor_tree(this->coverageFragmentProcessor(i), 1);
}
} else {
result.append("No coverage fragment processors.\n");
}
} else {
result.append("No color or coverage fragment processors.\n");
}
if (this->isFinalized()) {
result.append("Xfer Processor: ");
if (this->xferProcessor()) {
result.appendf("%s\n", this->xferProcessor()->name());
} else {
result.append("SrcOver\n");
}
} else {
result.append("XP Factory dumping not implemented.\n");
}
return result;
}
bool GrProcessorSet::operator==(const GrProcessorSet& that) const {
SkASSERT(this->isFinalized());
SkASSERT(that.isFinalized());
int fpCount = this->numFragmentProcessors();
if (((fFlags ^ that.fFlags) & ~kFinalized_Flag) || fpCount != that.numFragmentProcessors() ||
fColorFragmentProcessorCnt != that.fColorFragmentProcessorCnt) {
return false;
}
for (int i = 0; i < fpCount; ++i) {
int a = i + fFragmentProcessorOffset;
int b = i + that.fFragmentProcessorOffset;
if (!fFragmentProcessors[a]->isEqual(*that.fFragmentProcessors[b])) {
return false;
}
}
// Most of the time both of these are null
if (!this->xferProcessor() && !that.xferProcessor()) {
return true;
}
const GrXferProcessor& thisXP = this->xferProcessor()
? *this->xferProcessor()
: GrPorterDuffXPFactory::SimpleSrcOverXP();
const GrXferProcessor& thatXP = that.xferProcessor()
? *that.xferProcessor()
: GrPorterDuffXPFactory::SimpleSrcOverXP();
return thisXP.isEqual(thatXP);
}
GrProcessorSet::Analysis GrProcessorSet::finalize(const GrProcessorAnalysisColor& colorInput,
const GrProcessorAnalysisCoverage coverageInput,
const GrAppliedClip* clip, bool isMixedSamples,
const GrCaps& caps,
GrPixelConfigIsClamped dstIsClamped,
GrColor* overrideInputColor) {
SkASSERT(!this->isFinalized());
SkASSERT(!fFragmentProcessorOffset);
GrProcessorSet::Analysis analysis;
analysis.fCompatibleWithCoverageAsAlpha = GrProcessorAnalysisCoverage::kLCD != coverageInput;
const std::unique_ptr<const GrFragmentProcessor>* fps =
fFragmentProcessors.get() + fFragmentProcessorOffset;
GrColorFragmentProcessorAnalysis colorAnalysis(
colorInput, unique_ptr_address_as_pointer_address(fps), fColorFragmentProcessorCnt);
analysis.fCompatibleWithCoverageAsAlpha &=
colorAnalysis.allProcessorsCompatibleWithCoverageAsAlpha();
fps += fColorFragmentProcessorCnt;
int n = this->numCoverageFragmentProcessors();
bool hasCoverageFP = n > 0;
bool coverageUsesLocalCoords = false;
for (int i = 0; i < n; ++i) {
if (!fps[i]->compatibleWithCoverageAsAlpha()) {
analysis.fCompatibleWithCoverageAsAlpha = false;
}
coverageUsesLocalCoords |= fps[i]->usesLocalCoords();
}
if (clip) {
hasCoverageFP = hasCoverageFP || clip->numClipCoverageFragmentProcessors();
for (int i = 0; i < clip->numClipCoverageFragmentProcessors(); ++i) {
const GrFragmentProcessor* clipFP = clip->clipCoverageFragmentProcessor(i);
analysis.fCompatibleWithCoverageAsAlpha &= clipFP->compatibleWithCoverageAsAlpha();
coverageUsesLocalCoords |= clipFP->usesLocalCoords();
}
}
int colorFPsToEliminate = colorAnalysis.initialProcessorsToEliminate(overrideInputColor);
analysis.fInputColorType = static_cast<Analysis::PackedInputColorType>(
colorFPsToEliminate ? Analysis::kOverridden_InputColorType
: Analysis::kOriginal_InputColorType);
GrProcessorAnalysisCoverage outputCoverage;
if (GrProcessorAnalysisCoverage::kLCD == coverageInput) {
outputCoverage = GrProcessorAnalysisCoverage::kLCD;
} else if (hasCoverageFP || GrProcessorAnalysisCoverage::kSingleChannel == coverageInput) {
outputCoverage = GrProcessorAnalysisCoverage::kSingleChannel;
} else {
outputCoverage = GrProcessorAnalysisCoverage::kNone;
}
GrXPFactory::AnalysisProperties props = GrXPFactory::GetAnalysisProperties(
this->xpFactory(), colorAnalysis.outputColor(), outputCoverage, caps, dstIsClamped);
if (!this->numCoverageFragmentProcessors() &&
GrProcessorAnalysisCoverage::kNone == coverageInput) {
analysis.fCanCombineOverlappedStencilAndCover = SkToBool(
props & GrXPFactory::AnalysisProperties::kCanCombineOverlappedStencilAndCover);
} else {
// If we have non-clipping coverage processors we don't try to merge stencil steps as its
// unclear whether it will be correct. We don't expect this to happen in practice.
analysis.fCanCombineOverlappedStencilAndCover = false;
}
analysis.fRequiresDstTexture =
SkToBool(props & GrXPFactory::AnalysisProperties::kRequiresDstTexture);
analysis.fCompatibleWithCoverageAsAlpha &=
SkToBool(props & GrXPFactory::AnalysisProperties::kCompatibleWithAlphaAsCoverage);
analysis.fRequiresBarrierBetweenOverlappingDraws = SkToBool(
props & GrXPFactory::AnalysisProperties::kRequiresBarrierBetweenOverlappingDraws);
if (props & GrXPFactory::AnalysisProperties::kIgnoresInputColor) {
colorFPsToEliminate = this->numColorFragmentProcessors();
analysis.fInputColorType =
static_cast<Analysis::PackedInputColorType>(Analysis::kIgnored_InputColorType);
analysis.fUsesLocalCoords = coverageUsesLocalCoords;
} else {
analysis.fUsesLocalCoords = coverageUsesLocalCoords | colorAnalysis.usesLocalCoords();
}
for (int i = 0; i < colorFPsToEliminate; ++i) {
fFragmentProcessors[i].reset(nullptr);
}
for (int i = colorFPsToEliminate; i < fFragmentProcessors.count(); ++i) {
fFragmentProcessors[i]->markPendingExecution();
}
fFragmentProcessorOffset = colorFPsToEliminate;
fColorFragmentProcessorCnt -= colorFPsToEliminate;
auto xp = GrXPFactory::MakeXferProcessor(this->xpFactory(), colorAnalysis.outputColor(),
outputCoverage, isMixedSamples, caps, dstIsClamped);
fXP.fProcessor = xp.release();
fFlags |= kFinalized_Flag;
analysis.fIsInitialized = true;
return analysis;
}
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