blob: 22fa63589f659d55b7965ddaf159c67c2539c2f2 [file] [log] [blame]
/*
* 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 "effects/GrPorterDuffXferProcessor.h"
const GrProcessorSet& GrProcessorSet::EmptySet() {
static const GrProcessorSet gEmpty(GrProcessorSet::Empty::kEmpty);
return gEmpty;
}
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) {
fFragmentProcessors[i++] = fp.release();
}
for (auto& fp : paint.fCoverageFragmentProcessors) {
fFragmentProcessors[i++] = fp.release();
}
if (paint.usesDistanceVectorField()) {
fFlags |= kUseDistanceVectorField_Flag;
}
} else {
SkDebugf("Insane number of color fragment processors in paint. Dropping all processors.");
fColorFragmentProcessorCnt = 0;
}
}
GrProcessorSet::~GrProcessorSet() {
for (int i = fFragmentProcessorOffset; i < fFragmentProcessors.count(); ++i) {
if (this->isFinalized()) {
fFragmentProcessors[i]->completedExecution();
} else {
fFragmentProcessors[i]->unref();
}
}
if (this->isFinalized() && this->xferProcessor()) {
this->xferProcessor()->unref();
}
}
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, GrColor* overrideInputColor) {
SkASSERT(!this->isFinalized());
SkASSERT(!fFragmentProcessorOffset);
GrProcessorSet::Analysis analysis;
const GrFragmentProcessor* clipFP = clip ? clip->clipCoverageFragmentProcessor() : nullptr;
GrColorFragmentProcessorAnalysis colorAnalysis(colorInput);
analysis.fCompatibleWithCoverageAsAlpha = GrProcessorAnalysisCoverage::kLCD != coverageInput;
const GrFragmentProcessor* const* fps = fFragmentProcessors.get() + fFragmentProcessorOffset;
colorAnalysis.analyzeProcessors(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;
// Other than tests that exercise atypical behavior we expect all coverage FPs to be
// compatible with the coverage-as-alpha optimization.
GrCapsDebugf(&caps, "Coverage FP is not compatible with coverage as alpha.\n");
}
coverageUsesLocalCoords |= fps[i]->usesLocalCoords();
}
if (clipFP) {
analysis.fCompatibleWithCoverageAsAlpha &= clipFP->compatibleWithCoverageAsAlpha();
coverageUsesLocalCoords |= clipFP->usesLocalCoords();
hasCoverageFP = true;
}
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);
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]->unref();
fFragmentProcessors[i] = nullptr;
}
for (int i = colorFPsToEliminate; i < fFragmentProcessors.count(); ++i) {
fFragmentProcessors[i]->addPendingExecution();
fFragmentProcessors[i]->unref();
}
fFragmentProcessorOffset = colorFPsToEliminate;
fColorFragmentProcessorCnt -= colorFPsToEliminate;
auto xp = GrXPFactory::MakeXferProcessor(this->xpFactory(), colorAnalysis.outputColor(),
outputCoverage, isMixedSamples, caps);
fXP.fProcessor = xp.release();
fFlags |= kFinalized_Flag;
analysis.fIsInitialized = true;
return analysis;
}