/*
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* Copyright 2016 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 SkBlendModePriv_DEFINED
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#define SkBlendModePriv_DEFINED
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#include "SkBlendMode.h"
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#include "SkColor.h"
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#include "SkColorData.h"
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class SkRasterPipeline;
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bool SkBlendMode_SupportsCoverageAsAlpha(SkBlendMode);
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static inline bool SkBlendMode_CaresAboutRBOrder(SkBlendMode mode) {
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return (mode > SkBlendMode::kLastSeparableMode);
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}
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bool SkBlendMode_ShouldPreScaleCoverage(SkBlendMode, bool rgb_coverage);
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void SkBlendMode_AppendStages(SkBlendMode, SkRasterPipeline*);
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enum class SkBlendModeCoeff {
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kZero, /** 0 */
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kOne, /** 1 */
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kSC, /** src color */
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kISC, /** inverse src color (i.e. 1 - sc) */
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kDC, /** dst color */
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kIDC, /** inverse dst color (i.e. 1 - dc) */
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kSA, /** src alpha */
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kISA, /** inverse src alpha (i.e. 1 - sa) */
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kDA, /** dst alpha */
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kIDA, /** inverse dst alpha (i.e. 1 - da) */
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kCoeffCount
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};
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bool SkBlendMode_AsCoeff(SkBlendMode mode, SkBlendModeCoeff* src, SkBlendModeCoeff* dst);
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SkPMColor4f SkBlendMode_Apply(SkBlendMode, const SkPMColor4f& src, const SkPMColor4f& dst);
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#if SK_SUPPORT_GPU
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#include "GrXferProcessor.h"
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const GrXPFactory* SkBlendMode_AsXPFactory(SkBlendMode);
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#endif
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#endif
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