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1 /* | 1 /* |
2 * Copyright 2014 Google Inc. | 2 * Copyright 2014 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef GrPorterDuffXferProcessor_DEFINED | 8 #ifndef GrPorterDuffXferProcessor_DEFINED |
9 #define GrPorterDuffXferProcessor_DEFINED | 9 #define GrPorterDuffXferProcessor_DEFINED |
10 | 10 |
11 #include "GrTypes.h" | 11 #include "GrTypes.h" |
12 #include "GrXferProcessor.h" | 12 #include "GrXferProcessor.h" |
13 #include "SkXfermode.h" | 13 #include "SkXfermode.h" |
14 | 14 |
15 class GrDrawState; | 15 class GrDrawState; |
16 class GrInvariantOutput; | 16 class GrInvariantOutput; |
17 | 17 |
18 class GrPorterDuffXferProcessor : public GrXferProcessor { | 18 class GrPorterDuffXferProcessor : public GrXferProcessor { |
19 public: | 19 public: |
20 static GrXferProcessor* Create(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend, | 20 static GrXferProcessor* Create(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend, |
21 GrColor constant = 0) { | 21 GrColor constant = 0) { |
22 return SkNEW_ARGS(GrPorterDuffXferProcessor, (srcBlend, dstBlend, consta
nt)); | 22 return SkNEW_ARGS(GrPorterDuffXferProcessor, (srcBlend, dstBlend, consta
nt)); |
23 } | 23 } |
24 | 24 |
25 virtual ~GrPorterDuffXferProcessor(); | 25 virtual ~GrPorterDuffXferProcessor(); |
26 | 26 |
27 virtual const char* name() const { return "Porter Duff"; } | 27 virtual const char* name() const { return "Porter Duff"; } |
28 | 28 |
29 virtual void getGLProcessorKey(const GrGLCaps& caps, | 29 void getGLProcessorKey(const GrGLCaps& caps, GrProcessorKeyBuilder* b) const
SK_OVERRIDE; |
30 GrProcessorKeyBuilder* b) const SK_OVERRIDE; | |
31 | 30 |
32 virtual GrGLFragmentProcessor* createGLInstance() const SK_OVERRIDE; | 31 GrGLXferProcessor* createGLInstance() const SK_OVERRIDE; |
33 | 32 |
34 virtual GrXferProcessor::OptFlags getOptimizations(const GrProcOptInfo& colo
rPOI, | 33 virtual bool hasSecondaryOutput() const SK_OVERRIDE; |
35 const GrProcOptInfo& cove
ragePOI, | |
36 bool isCoverageDrawing, | |
37 bool colorWriteDisabled, | |
38 bool doesStencilWrite, | |
39 GrColor* color, | |
40 uint8_t* coverage) SK_OVE
RRIDE; | |
41 | 34 |
42 virtual void getBlendInfo(GrXferProcessor::BlendInfo* blendInfo) const SK_OV
ERRIDE { | 35 /////////////////////////////////////////////////////////////////////////// |
| 36 /// @name Stage Output Types |
| 37 //// |
| 38 |
| 39 enum PrimaryOutputType { |
| 40 // Modulate color and coverage, write result as the color output. |
| 41 kModulate_PrimaryOutputType, |
| 42 // Combines the coverage, dst, and color as coverage * color + (1 - cove
rage) * dst. This |
| 43 // can only be set if fDstReadKey is non-zero. |
| 44 kCombineWithDst_PrimaryOutputType, |
| 45 }; |
| 46 |
| 47 enum SecondaryOutputType { |
| 48 // There is no secondary output |
| 49 kNone_SecondaryOutputType, |
| 50 // Writes coverage as the secondary output. Only set if dual source blen
ding is supported |
| 51 // and primary output is kModulate. |
| 52 kCoverage_SecondaryOutputType, |
| 53 // Writes coverage * (1 - colorA) as the secondary output. Only set if d
ual source blending |
| 54 // is supported and primary output is kModulate. |
| 55 kCoverageISA_SecondaryOutputType, |
| 56 // Writes coverage * (1 - colorRGBA) as the secondary output. Only set i
f dual source |
| 57 // blending is supported and primary output is kModulate. |
| 58 kCoverageISC_SecondaryOutputType, |
| 59 |
| 60 kSecondaryOutputTypeCnt, |
| 61 }; |
| 62 |
| 63 PrimaryOutputType primaryOutputType() const { return fPrimaryOutputType; } |
| 64 SecondaryOutputType secondaryOutputType() const { return fSecondaryOutputTyp
e; } |
| 65 |
| 66 GrXferProcessor::OptFlags getOptimizations(const GrProcOptInfo& colorPOI, |
| 67 const GrProcOptInfo& coveragePOI, |
| 68 bool isCoverageDrawing, |
| 69 bool colorWriteDisabled, |
| 70 bool doesStencilWrite, |
| 71 GrColor* color, |
| 72 uint8_t* coverage, |
| 73 const GrDrawTargetCaps& caps) SK_
OVERRIDE; |
| 74 |
| 75 void getBlendInfo(GrXferProcessor::BlendInfo* blendInfo) const SK_OVERRIDE { |
43 blendInfo->fSrcBlend = fSrcBlend; | 76 blendInfo->fSrcBlend = fSrcBlend; |
44 blendInfo->fDstBlend = fDstBlend; | 77 blendInfo->fDstBlend = fDstBlend; |
45 blendInfo->fBlendConstant = fBlendConstant; | 78 blendInfo->fBlendConstant = fBlendConstant; |
46 } | 79 } |
47 | 80 |
48 private: | 81 private: |
49 GrPorterDuffXferProcessor(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend, GrCo
lor constant); | 82 GrPorterDuffXferProcessor(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend, GrCo
lor constant); |
50 | 83 |
51 virtual bool onIsEqual(const GrFragmentProcessor& fpBase) const SK_OVERRIDE
{ | 84 bool onIsEqual(const GrXferProcessor& xpBase) const SK_OVERRIDE { |
52 const GrPorterDuffXferProcessor& xp = fpBase.cast<GrPorterDuffXferProces
sor>(); | 85 const GrPorterDuffXferProcessor& xp = xpBase.cast<GrPorterDuffXferProces
sor>(); |
53 if (fSrcBlend != xp.fSrcBlend || | 86 if (fSrcBlend != xp.fSrcBlend || |
54 fDstBlend != xp.fDstBlend || | 87 fDstBlend != xp.fDstBlend || |
55 fBlendConstant != xp.fBlendConstant) { | 88 fBlendConstant != xp.fBlendConstant || |
| 89 fPrimaryOutputType != xp.fPrimaryOutputType || |
| 90 fSecondaryOutputType != xp.fSecondaryOutputType) { |
56 return false; | 91 return false; |
57 } | 92 } |
58 return true; | 93 return true; |
59 } | 94 } |
60 | 95 |
61 virtual void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVE
RRIDE; | 96 void onComputeInvariantOutput(GrInvariantOutput* inout) const SK_OVERRIDE; |
| 97 |
| 98 GrXferProcessor::OptFlags internalGetOptimizations(const GrProcOptInfo& colo
rPOI, |
| 99 const GrProcOptInfo& cove
ragePOI, |
| 100 bool isCoverageDrawing, |
| 101 bool colorWriteDisabled, |
| 102 bool doesStencilWrite, |
| 103 GrColor* color, |
| 104 uint8_t* coverage); |
| 105 |
| 106 void calcOutputTypes(GrXferProcessor::OptFlags blendOpts, const GrDrawTarget
Caps& caps, |
| 107 bool hasSolidCoverage, bool readDst); |
62 | 108 |
63 GrBlendCoeff fSrcBlend; | 109 GrBlendCoeff fSrcBlend; |
64 GrBlendCoeff fDstBlend; | 110 GrBlendCoeff fDstBlend; |
65 GrColor fBlendConstant; | 111 GrColor fBlendConstant; |
| 112 PrimaryOutputType fPrimaryOutputType; |
| 113 SecondaryOutputType fSecondaryOutputType; |
66 | 114 |
67 typedef GrXferProcessor INHERITED; | 115 typedef GrXferProcessor INHERITED; |
68 }; | 116 }; |
69 | 117 |
70 /////////////////////////////////////////////////////////////////////////////// | 118 /////////////////////////////////////////////////////////////////////////////// |
71 | 119 |
72 class GrPorterDuffXPFactory : public GrXPFactory { | 120 class GrPorterDuffXPFactory : public GrXPFactory { |
73 public: | 121 public: |
74 static GrXPFactory* Create(SkXfermode::Mode mode); | 122 static GrXPFactory* Create(SkXfermode::Mode mode); |
75 | 123 |
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100 uint32_t* solidColorKnownComponents) const SK_OV
ERRIDE; | 148 uint32_t* solidColorKnownComponents) const SK_OV
ERRIDE; |
101 | 149 |
102 private: | 150 private: |
103 GrPorterDuffXPFactory(GrBlendCoeff src, GrBlendCoeff dst); | 151 GrPorterDuffXPFactory(GrBlendCoeff src, GrBlendCoeff dst); |
104 | 152 |
105 bool onIsEqual(const GrXPFactory& xpfBase) const SK_OVERRIDE { | 153 bool onIsEqual(const GrXPFactory& xpfBase) const SK_OVERRIDE { |
106 const GrPorterDuffXPFactory& xpf = xpfBase.cast<GrPorterDuffXPFactory>()
; | 154 const GrPorterDuffXPFactory& xpf = xpfBase.cast<GrPorterDuffXPFactory>()
; |
107 return (fSrcCoeff == xpf.fSrcCoeff && fDstCoeff == xpf.fDstCoeff); | 155 return (fSrcCoeff == xpf.fSrcCoeff && fDstCoeff == xpf.fDstCoeff); |
108 } | 156 } |
109 | 157 |
| 158 GR_DECLARE_XP_FACTORY_TEST; |
| 159 |
110 GrBlendCoeff fSrcCoeff; | 160 GrBlendCoeff fSrcCoeff; |
111 GrBlendCoeff fDstCoeff; | 161 GrBlendCoeff fDstCoeff; |
112 | 162 |
113 typedef GrXPFactory INHERITED; | 163 typedef GrXPFactory INHERITED; |
114 }; | 164 }; |
115 | 165 |
116 #endif | 166 #endif |
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