c21b09eec9
Committed: https://skia.googlesource.com/skia/+/ecfdc251be71f3d634e76afdd6375bf55fc061aa Review URL: https://codereview.chromium.org/1316513002
46 lines
1.4 KiB
C++
46 lines
1.4 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#ifndef GrExtractAlphaFragmentProcessor_DEFINED
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#define GrExtractAlphaFragmentProcessor_DEFINED
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#include "GrFragmentProcessor.h"
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/** This processor extracts the incoming color's alpha, ignores r, g, and b, and feeds
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the replicated alpha to it's inner processor. */
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class GrExtractAlphaFragmentProcessor : public GrFragmentProcessor {
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public:
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static GrFragmentProcessor* Create(const GrFragmentProcessor* processor) {
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if (!processor) {
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return nullptr;
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}
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return SkNEW_ARGS(GrExtractAlphaFragmentProcessor, (processor));
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}
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~GrExtractAlphaFragmentProcessor() override {}
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const char* name() const override { return "Extract Alpha"; }
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private:
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GrExtractAlphaFragmentProcessor(const GrFragmentProcessor* processor) {
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this->initClassID<GrExtractAlphaFragmentProcessor>();
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this->registerChildProcessor(processor);
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}
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GrGLFragmentProcessor* onCreateGLInstance() const override;
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void onGetGLProcessorKey(const GrGLSLCaps&, GrProcessorKeyBuilder*) const override;
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bool onIsEqual(const GrFragmentProcessor&) const override;
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void onComputeInvariantOutput(GrInvariantOutput* inout) const override;
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typedef GrFragmentProcessor INHERITED;
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};
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#endif
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