GrDrawOp::RequiresDstTexture GrAtlasTextOp::finalize(const GrCaps& caps,
const GrAppliedClip* clip) {
GrProcessorAnalysisCoverage coverage;
GrProcessorAnalysisColor color;
if (kColorBitmapMask_MaskType == fMaskType) {
color.setToUnknown();
} else {
color.setToConstant(this->color());
}
switch (fMaskType) {
case kGrayscaleCoverageMask_MaskType:
case kAliasedDistanceField_MaskType:
case kGrayscaleDistanceField_MaskType:
coverage = GrProcessorAnalysisCoverage::kSingleChannel;
break;
case kLCDCoverageMask_MaskType:
case kLCDDistanceField_MaskType:
case kLCDBGRDistanceField_MaskType:
coverage = GrProcessorAnalysisCoverage::kLCD;
break;
case kColorBitmapMask_MaskType:
coverage = GrProcessorAnalysisCoverage::kNone;
break;
}
auto analysis = fProcessors.finalize(color, coverage, clip, false, caps, &fGeoData[0].fColor);
fUsesLocalCoords = analysis.usesLocalCoords();
fCanCombineOnTouchOrOverlap =
!analysis.requiresDstTexture() &&
!(fProcessors.xferProcessor() && fProcessors.xferProcessor()->xferBarrierType(caps));
return analysis.requiresDstTexture() ? RequiresDstTexture::kYes : RequiresDstTexture::kNo;
}
GrDrawOp::RequiresDstTexture GrSimpleMeshDrawOpHelper::xpRequiresDstTexture(
const GrCaps& caps, const GrAppliedClip* clip, GrProcessorAnalysisCoverage geometryCoverage,
GrColor* geometryColor) {
GrProcessorAnalysisColor color = *geometryColor;
auto result = this->xpRequiresDstTexture(caps, clip, geometryCoverage, &color);
color.isConstant(geometryColor);
return result;
}
GrDrawOp::RequiresDstTexture GrDrawVerticesOp::finalize(const GrCaps& caps,
const GrAppliedClip* clip) {
GrProcessorAnalysisColor gpColor;
if (this->requiresPerVertexColors()) {
gpColor.setToUnknown();
} else {
gpColor.setToConstant(fMeshes.front().fColor);
}
auto result = fHelper.xpRequiresDstTexture(caps, clip, GrProcessorAnalysisCoverage::kNone,
&gpColor);
if (gpColor.isConstant(&fMeshes.front().fColor)) {
fMeshes.front().fIgnoreColors = true;
fFlags &= ~kRequiresPerVertexColors_Flag;
fColorArrayType = ColorArrayType::kPremulGrColor;
}
if (!fHelper.usesLocalCoords()) {
fMeshes[0].fIgnoreTexCoords = true;
fFlags &= ~kAnyMeshHasExplicitLocalCoords_Flag;
}
return result;
}
std::unique_ptr<GrFragmentProcessor> GrFragmentProcessor::RunInSeries(
std::unique_ptr<GrFragmentProcessor>* series, int cnt) {
class SeriesFragmentProcessor : public GrFragmentProcessor {
public:
static std::unique_ptr<GrFragmentProcessor> Make(
std::unique_ptr<GrFragmentProcessor>* children, int cnt) {
return std::unique_ptr<GrFragmentProcessor>(new SeriesFragmentProcessor(children, cnt));
}
const char* name() const override { return "Series"; }
std::unique_ptr<GrFragmentProcessor> clone() const override {
SkSTArray<4, std::unique_ptr<GrFragmentProcessor>> children(this->numChildProcessors());
for (int i = 0; i < this->numChildProcessors(); ++i) {
if (!children.push_back(this->childProcessor(i).clone())) {
return nullptr;
}
}
return Make(children.begin(), this->numChildProcessors());
}
private:
GrGLSLFragmentProcessor* onCreateGLSLInstance() const override {
class GLFP : public GrGLSLFragmentProcessor {
public:
void emitCode(EmitArgs& args) override {
// First guy's input might be nil.
SkString temp("out0");
this->emitChild(0, args.fInputColor, &temp, args);
SkString input = temp;
for (int i = 1; i < this->numChildProcessors() - 1; ++i) {
temp.printf("out%d", i);
this->emitChild(i, input.c_str(), &temp, args);
input = temp;
}
// Last guy writes to our output variable.
this->emitChild(this->numChildProcessors() - 1, input.c_str(), args);
}
};
return new GLFP;
}
SeriesFragmentProcessor(std::unique_ptr<GrFragmentProcessor>* children, int cnt)
: INHERITED(kSeriesFragmentProcessor_ClassID, OptFlags(children, cnt)) {
SkASSERT(cnt > 1);
for (int i = 0; i < cnt; ++i) {
this->registerChildProcessor(std::move(children[i]));
}
}
static OptimizationFlags OptFlags(std::unique_ptr<GrFragmentProcessor>* children, int cnt) {
OptimizationFlags flags = kAll_OptimizationFlags;
for (int i = 0; i < cnt && flags != kNone_OptimizationFlags; ++i) {
flags &= children[i]->optimizationFlags();
}
return flags;
}
void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override {}
bool onIsEqual(const GrFragmentProcessor&) const override { return true; }
GrColor4f constantOutputForConstantInput(GrColor4f color) const override {
int childCnt = this->numChildProcessors();
for (int i = 0; i < childCnt; ++i) {
color = ConstantOutputForConstantInput(this->childProcessor(i), color);
}
return color;
}
typedef GrFragmentProcessor INHERITED;
};
if (!cnt) {
return nullptr;
}
if (1 == cnt) {
return std::move(series[0]);
}
// Run the through the series, do the invariant output processing, and look for eliminations.
GrProcessorAnalysisColor inputColor;
inputColor.setToUnknown();
GrColorFragmentProcessorAnalysis info(inputColor, unique_ptr_address_as_pointer_address(series),
cnt);
SkTArray<std::unique_ptr<GrFragmentProcessor>> replacementSeries;
GrColor4f knownColor;
int leadingFPsToEliminate = info.initialProcessorsToEliminate(&knownColor);
if (leadingFPsToEliminate) {
std::unique_ptr<GrFragmentProcessor> colorFP(
GrConstColorProcessor::Make(knownColor, GrConstColorProcessor::InputMode::kIgnore));
if (leadingFPsToEliminate == cnt) {
return colorFP;
}
cnt = cnt - leadingFPsToEliminate + 1;
replacementSeries.reserve(cnt);
replacementSeries.emplace_back(std::move(colorFP));
for (int i = 0; i < cnt - 1; ++i) {
replacementSeries.emplace_back(std::move(series[leadingFPsToEliminate + i]));
}
series = replacementSeries.begin();
}
return SeriesFragmentProcessor::Make(series, cnt);
}