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| 1 /* |
| 2 * Copyright 2015 Google Inc. |
| 3 * |
| 4 * Use of this source code is governed by a BSD-style license that can be |
| 5 * found in the LICENSE file. |
| 6 */ |
| 7 |
| 8 #ifndef GrCustomXfermodePriv_DEFINED |
| 9 #define GrCustomXfermodePriv_DEFINED |
| 10 |
| 11 #include "GrCaps.h" |
| 12 #include "GrCoordTransform.h" |
| 13 #include "GrFragmentProcessor.h" |
| 14 #include "GrTextureAccess.h" |
| 15 #include "GrXferProcessor.h" |
| 16 #include "SkXfermode.h" |
| 17 |
| 18 class GrGLCaps; |
| 19 class GrGLFragmentProcessor; |
| 20 class GrInvariantOutput; |
| 21 class GrProcessorKeyBuilder; |
| 22 class GrTexture; |
| 23 |
| 24 /////////////////////////////////////////////////////////////////////////////// |
| 25 // Fragment Processor |
| 26 /////////////////////////////////////////////////////////////////////////////// |
| 27 |
| 28 class GrCustomXferFP : public GrFragmentProcessor { |
| 29 public: |
| 30 GrCustomXferFP(GrProcessorDataManager*, SkXfermode::Mode mode, GrTexture* ba
ckground, GrRenderTarget* dst); |
| 31 |
| 32 const char* name() const override { return "Custom Xfermode"; } |
| 33 |
| 34 SkXfermode::Mode mode() const { return fMode; } |
| 35 const GrTextureAccess& backgroundAccess() const { return fBackgroundAccess;
} |
| 36 |
| 37 private: |
| 38 GrGLFragmentProcessor* onCreateGLInstance() const override; |
| 39 |
| 40 void onGetGLProcessorKey(const GrGLSLCaps& caps, GrProcessorKeyBuilder* b) c
onst override; |
| 41 |
| 42 bool onIsEqual(const GrFragmentProcessor& other) const override; |
| 43 |
| 44 void onComputeInvariantOutput(GrInvariantOutput* inout) const override; |
| 45 |
| 46 GR_DECLARE_FRAGMENT_PROCESSOR_TEST; |
| 47 |
| 48 SkXfermode::Mode fMode; |
| 49 GrCoordTransform fBackgroundTransform; |
| 50 GrTextureAccess fBackgroundAccess; |
| 51 |
| 52 typedef GrFragmentProcessor INHERITED; |
| 53 }; |
| 54 |
| 55 /////////////////////////////////////////////////////////////////////////////// |
| 56 // Xfer Processor |
| 57 /////////////////////////////////////////////////////////////////////////////// |
| 58 |
| 59 class GrCustomXPFactory : public GrXPFactory { |
| 60 public: |
| 61 GrCustomXPFactory(SkXfermode::Mode mode); |
| 62 |
| 63 bool supportsRGBCoverage(GrColor knownColor, uint32_t knownColorFlags) const
override { |
| 64 return true; |
| 65 } |
| 66 |
| 67 void getInvariantBlendedColor(const GrProcOptInfo& colorPOI, |
| 68 GrXPFactory::InvariantBlendedColor*) const ove
rride; |
| 69 |
| 70 private: |
| 71 GrXferProcessor* onCreateXferProcessor(const GrCaps& caps, |
| 72 const GrProcOptInfo& colorPOI, |
| 73 const GrProcOptInfo& coveragePOI, |
| 74 bool hasMixedSamples, |
| 75 const DstTexture*, GrRenderTarget* ds
t) const override; |
| 76 |
| 77 bool willReadDstColor(const GrCaps& caps, |
| 78 const GrProcOptInfo& colorPOI, |
| 79 const GrProcOptInfo& coveragePOI, |
| 80 bool hasMixedSamples) const override; |
| 81 |
| 82 bool onIsEqual(const GrXPFactory& xpfBase) const override { |
| 83 const GrCustomXPFactory& xpf = xpfBase.cast<GrCustomXPFactory>(); |
| 84 return fMode == xpf.fMode; |
| 85 } |
| 86 |
| 87 GR_DECLARE_XP_FACTORY_TEST; |
| 88 |
| 89 SkXfermode::Mode fMode; |
| 90 GrBlendEquation fHWBlendEquation; |
| 91 |
| 92 typedef GrXPFactory INHERITED; |
| 93 }; |
| 94 #endif |
| 95 |
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