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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 "GrProcOptInfo.h"
GrProcessorSet::GrProcessorSet(GrPaint&& paint) {
fXPFactory = paint.fXPFactory;
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();
}
fFlags = 0;
if (paint.usesDistanceVectorField()) {
fFlags |= kUseDistanceVectorField_Flag;
}
if (paint.getDisableOutputConversionToSRGB()) {
fFlags |= kDisableOutputConversionToSRGB_Flag;
}
if (paint.getAllowSRGBInputs()) {
fFlags |= kAllowSRGBInputs_Flag;
}
}
//////////////////////////////////////////////////////////////////////////////
void GrProcessorSet::FragmentProcessorAnalysis::internalReset(const GrPipelineInput& colorInput,
const GrPipelineInput coverageInput,
const GrProcessorSet& processors,
bool usesPLSDstRead,
const GrFragmentProcessor* clipFP,
const GrCaps& caps) {
GrProcOptInfo colorInfo(colorInput);
fUsesPLSDstRead = usesPLSDstRead;
fCompatibleWithCoverageAsAlpha = !coverageInput.isLCDCoverage();
const GrFragmentProcessor* const* fps = processors.fFragmentProcessors.get();
colorInfo.analyzeProcessors(fps, processors.fColorFragmentProcessorCnt);
fCompatibleWithCoverageAsAlpha &= colorInfo.allProcessorsCompatibleWithCoverageAsAlpha();
fps += processors.fColorFragmentProcessorCnt;
int n = processors.numCoverageFragmentProcessors();
bool hasCoverageFP = n > 0;
for (int i = 0; i < n && fCompatibleWithCoverageAsAlpha; ++i) {
if (!fps[i]->compatibleWithCoverageAsAlpha()) {
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");
break;
}
}
if (clipFP) {
fCompatibleWithCoverageAsAlpha &= clipFP->compatibleWithCoverageAsAlpha();
hasCoverageFP = true;
}
fInitialColorProcessorsToEliminate =
colorInfo.initialProcessorsToEliminate(&fOverrideInputColor);
bool opaque = colorInfo.isOpaque();
if (colorInfo.hasKnownOutputColor(&fKnownOutputColor)) {
fColorType = opaque ? ColorType::kOpaqueConstant : ColorType::kConstant;
} else if (opaque) {
fColorType = ColorType::kOpaque;
} else {
fColorType = ColorType::kUnknown;
}
if (coverageInput.isLCDCoverage()) {
fCoverageType = CoverageType::kLCD;
} else {
fCoverageType = hasCoverageFP || !coverageInput.isSolidWhite()
? CoverageType::kSingleChannel
: CoverageType::kNone;
}
}
void GrProcessorSet::FragmentProcessorAnalysis::reset(const GrPipelineInput& colorInput,
const GrPipelineInput coverageInput,
const GrProcessorSet& processors,
bool usesPLSDstRead,
const GrAppliedClip& appliedClip,
const GrCaps& caps) {
this->internalReset(colorInput, coverageInput, processors, usesPLSDstRead,
appliedClip.clipCoverageFragmentProcessor(), caps);
}
GrProcessorSet::FragmentProcessorAnalysis::FragmentProcessorAnalysis(
const GrPipelineInput& colorInput, const GrPipelineInput coverageInput, const GrCaps& caps)
: FragmentProcessorAnalysis() {
this->internalReset(colorInput, coverageInput, GrProcessorSet(GrPaint()), false, nullptr, caps);
}
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