Move GrPorterDuffXferProcessor to include/gpu/effects.

src/gpu/effects/GrPorterDuffXferProcessor.h

-/*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#ifndef GrPorterDuffXferProcessor_DEFINED
-#define GrPorterDuffXferProcessor_DEFINED
-
-#include "GrTypes.h"
-#include "GrXferProcessor.h"
-#include "SkXfermode.h"
-
-class GrDrawState;
-class GrInvariantOutput;
-
-class GrPorterDuffXferProcessor : public GrXferProcessor {
-public:
-    static GrXferProcessor* Create(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend) {
-        return SkNEW_ARGS(GrPorterDuffXferProcessor, (srcBlend, dstBlend));
-    }
-
-    virtual ~GrPorterDuffXferProcessor();
-
-    virtual const char* name() const { return "Porter Duff"; }
-
-    virtual void getGLProcessorKey(const GrGLCaps& caps,
-                                   GrProcessorKeyBuilder* b) const SK_OVERRIDE;
-
-    virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE;
-
-private:
-    GrPorterDuffXferProcessor(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend);
-
-    virtual bool onIsEqual(const GrFragmentProcessor& fpBase) const SK_OVERRIDE {
-        const GrPorterDuffXferProcessor& xp = fpBase.cast<GrPorterDuffXferProcessor>();
-        if (fSrcBlend != xp.fSrcBlend || fDstBlend != xp.fDstBlend) {
-            return false;
-        }
-        return true;
-    }
-
-    virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE;
-
-    GrBlendCoeff fSrcBlend;
-    GrBlendCoeff fDstBlend;
-    
-    typedef GrXferProcessor INHERITED;
-};
-
-///////////////////////////////////////////////////////////////////////////////
-
-class GrPorterDuffXPFactory : public GrXPFactory {
-public:
-    static GrXPFactory* Create(SkXfermode::Mode mode); 
-
-    static GrXPFactory* Create(SkXfermode::Coeff src, SkXfermode::Coeff dst) {
-        return SkNEW_ARGS(GrPorterDuffXPFactory, ((GrBlendCoeff)(src), (GrBlendCoeff)(dst)));
-    }
-
-    static GrXPFactory* Create(GrBlendCoeff src, GrBlendCoeff dst) {
-        return SkNEW_ARGS(GrPorterDuffXPFactory, (src, dst));
-    }
-
-    const GrXferProcessor* createXferProcessor() const SK_OVERRIDE;
-
-    bool supportsRGBCoverage(GrColor knownColor, uint32_t knownColorFlags) const SK_OVERRIDE;
-
-private:
-    GrPorterDuffXPFactory(GrBlendCoeff src, GrBlendCoeff dst)
-        : fSrc(src), fDst(dst) {}
-
-    GrBlendCoeff fSrc;
-    GrBlendCoeff fDst;
-
-    typedef GrXPFactory INHERITED;
-};
-
-#endif