GrPipeline* GrPipeline::CreateAt(void* memory, const CreateArgs& args,
GrXPOverridesForBatch* overrides) {
const GrPipelineBuilder& builder = *args.fPipelineBuilder;
// Create XferProcessor from DS's XPFactory
const GrXPFactory* xpFactory = builder.getXPFactory();
SkAutoTUnref<GrXferProcessor> xferProcessor;
if (xpFactory) {
xferProcessor.reset(xpFactory->createXferProcessor(args.fOpts,
builder.hasMixedSamples(),
&args.fDstTexture,
*args.fCaps));
} else {
xferProcessor.reset(GrPorterDuffXPFactory::CreateSrcOverXferProcessor(
*args.fCaps,
args.fOpts,
builder.hasMixedSamples(),
&args.fDstTexture));
}
if (!xferProcessor) {
return nullptr;
}
GrColor overrideColor = GrColor_ILLEGAL;
if (args.fOpts.fColorPOI.firstEffectiveProcessorIndex() != 0) {
overrideColor = args.fOpts.fColorPOI.inputColorToFirstEffectiveProccesor();
}
GrXferProcessor::OptFlags optFlags = GrXferProcessor::kNone_OptFlags;
optFlags = xferProcessor->getOptimizations(args.fOpts,
builder.getStencil().doesWrite(),
&overrideColor,
*args.fCaps);
// When path rendering the stencil settings are not always set on the GrPipelineBuilder
// so we must check the draw type. In cases where we will skip drawing we simply return a
// null GrPipeline.
if (GrXferProcessor::kSkipDraw_OptFlag & optFlags) {
return nullptr;
}
// No need to have an override color if it isn't even going to be used.
if (SkToBool(GrXferProcessor::kIgnoreColor_OptFlag & optFlags)) {
overrideColor = GrColor_ILLEGAL;
}
GrPipeline* pipeline = new (memory) GrPipeline;
pipeline->fXferProcessor.reset(xferProcessor);
pipeline->fRenderTarget.reset(builder.fRenderTarget.get());
SkASSERT(pipeline->fRenderTarget);
pipeline->fScissorState = *args.fScissor;
pipeline->fStencilSettings = builder.getStencil();
pipeline->fDrawFace = builder.getDrawFace();
pipeline->fFlags = 0;
if (builder.isHWAntialias()) {
pipeline->fFlags |= kHWAA_Flag;
}
if (builder.snapVerticesToPixelCenters()) {
pipeline->fFlags |= kSnapVertices_Flag;
}
int firstColorProcessorIdx = args.fOpts.fColorPOI.firstEffectiveProcessorIndex();
// TODO: Once we can handle single or four channel input into coverage GrFragmentProcessors
// then we can use GrPipelineBuilder's coverageProcInfo (like color above) to set this initial
// information.
int firstCoverageProcessorIdx = 0;
pipeline->adjustProgramFromOptimizations(builder, optFlags, args.fOpts.fColorPOI,
args.fOpts.fCoveragePOI, &firstColorProcessorIdx,
&firstCoverageProcessorIdx);
bool usesLocalCoords = false;
// Copy GrFragmentProcessors from GrPipelineBuilder to Pipeline
pipeline->fNumColorProcessors = builder.numColorFragmentProcessors() - firstColorProcessorIdx;
int numTotalProcessors = pipeline->fNumColorProcessors +
builder.numCoverageFragmentProcessors() - firstCoverageProcessorIdx;
pipeline->fFragmentProcessors.reset(numTotalProcessors);
int currFPIdx = 0;
for (int i = firstColorProcessorIdx; i < builder.numColorFragmentProcessors();
++i, ++currFPIdx) {
const GrFragmentProcessor* fp = builder.getColorFragmentProcessor(i);
pipeline->fFragmentProcessors[currFPIdx].reset(fp);
usesLocalCoords = usesLocalCoords || fp->usesLocalCoords();
}
for (int i = firstCoverageProcessorIdx; i < builder.numCoverageFragmentProcessors();
++i, ++currFPIdx) {
const GrFragmentProcessor* fp = builder.getCoverageFragmentProcessor(i);
pipeline->fFragmentProcessors[currFPIdx].reset(fp);
usesLocalCoords = usesLocalCoords || fp->usesLocalCoords();
}
// Setup info we need to pass to GrPrimitiveProcessors that are used with this GrPipeline.
overrides->fFlags = 0;
if (!SkToBool(optFlags & GrXferProcessor::kIgnoreColor_OptFlag)) {
overrides->fFlags |= GrXPOverridesForBatch::kReadsColor_Flag;
}
if (GrColor_ILLEGAL != overrideColor) {
overrides->fFlags |= GrXPOverridesForBatch::kUseOverrideColor_Flag;
overrides->fOverrideColor = overrideColor;
}
if (!SkToBool(optFlags & GrXferProcessor::kIgnoreCoverage_OptFlag)) {
overrides->fFlags |= GrXPOverridesForBatch::kReadsCoverage_Flag;
}
if (usesLocalCoords) {
overrides->fFlags |= GrXPOverridesForBatch::kReadsLocalCoords_Flag;
}
if (SkToBool(optFlags & GrXferProcessor::kCanTweakAlphaForCoverage_OptFlag)) {
overrides->fFlags |= GrXPOverridesForBatch::kCanTweakAlphaForCoverage_Flag;
}
GrXPFactory::InvariantBlendedColor blendedColor;
if (xpFactory) {
xpFactory->getInvariantBlendedColor(args.fOpts.fColorPOI, &blendedColor);
} else {
GrPorterDuffXPFactory::SrcOverInvariantBlendedColor(args.fOpts.fColorPOI.color(),
args.fOpts.fColorPOI.validFlags(),
args.fOpts.fColorPOI.isOpaque(),
&blendedColor);
}
if (blendedColor.fWillBlendWithDst) {
overrides->fFlags |= GrXPOverridesForBatch::kWillColorBlendWithDst_Flag;
}
return pipeline;
}
