1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
|
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "effects/GrPorterDuffXferProcessor.h"
#include "GrDrawState.h"
#include "GrInvariantOutput.h"
#include "GrProcessor.h"
#include "GrTypes.h"
#include "GrXferProcessor.h"
#include "gl/GrGLProcessor.h"
#include "gl/builders/GrGLFragmentShaderBuilder.h"
#include "gl/builders/GrGLProgramBuilder.h"
class GrGLPorterDuffXferProcessor : public GrGLXferProcessor {
public:
GrGLPorterDuffXferProcessor(const GrProcessor&) {}
virtual ~GrGLPorterDuffXferProcessor() {}
virtual void emitCode(GrGLFPBuilder* builder,
const GrFragmentProcessor& fp,
const char* outputColor,
const char* inputColor,
const TransformedCoordsArray& coords,
const TextureSamplerArray& samplers) SK_OVERRIDE {
GrGLFPFragmentBuilder* fsBuilder = builder->getFragmentShaderBuilder();
fsBuilder->codeAppendf("%s = %s;", outputColor, inputColor);
}
virtual void setData(const GrGLProgramDataManager&, const GrProcessor&) SK_OVERRIDE {};
static void GenKey(const GrProcessor&, const GrGLCaps& caps, GrProcessorKeyBuilder* b) {};
private:
typedef GrGLXferProcessor INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
GrPorterDuffXferProcessor::GrPorterDuffXferProcessor(GrBlendCoeff srcBlend, GrBlendCoeff dstBlend)
: fSrcBlend(srcBlend), fDstBlend(dstBlend) {
this->initClassID<GrPorterDuffXferProcessor>();
}
GrPorterDuffXferProcessor::~GrPorterDuffXferProcessor() {
}
void GrPorterDuffXferProcessor::getGLProcessorKey(const GrGLCaps& caps,
GrProcessorKeyBuilder* b) const {
GrGLPorterDuffXferProcessor::GenKey(*this, caps, b);
}
GrGLFragmentProcessor* GrPorterDuffXferProcessor::createGLInstance() const {
return SkNEW_ARGS(GrGLPorterDuffXferProcessor, (*this));
}
void GrPorterDuffXferProcessor::onComputeInvariantOutput(GrInvariantOutput* inout) const {
inout->setToUnknown(GrInvariantOutput::kWillNot_ReadInput);
}
///////////////////////////////////////////////////////////////////////////////
GrPorterDuffXPFactory::GrPorterDuffXPFactory(GrBlendCoeff src, GrBlendCoeff dst)
: fSrc(src), fDst(dst) {
this->initClassID<GrPorterDuffXPFactory>();
}
GrXPFactory* GrPorterDuffXPFactory::Create(SkXfermode::Mode mode) {
switch (mode) {
case SkXfermode::kClear_Mode: {
static GrPorterDuffXPFactory gClearPDXPF(kZero_GrBlendCoeff, kZero_GrBlendCoeff);
return SkRef(&gClearPDXPF);
break;
}
case SkXfermode::kSrc_Mode: {
static GrPorterDuffXPFactory gSrcPDXPF(kOne_GrBlendCoeff, kZero_GrBlendCoeff);
return SkRef(&gSrcPDXPF);
break;
}
case SkXfermode::kDst_Mode: {
static GrPorterDuffXPFactory gDstPDXPF(kZero_GrBlendCoeff, kOne_GrBlendCoeff);
return SkRef(&gDstPDXPF);
break;
}
case SkXfermode::kSrcOver_Mode: {
static GrPorterDuffXPFactory gSrcOverPDXPF(kOne_GrBlendCoeff, kISA_GrBlendCoeff);
return SkRef(&gSrcOverPDXPF);
break;
}
case SkXfermode::kDstOver_Mode: {
static GrPorterDuffXPFactory gDstOverPDXPF(kIDA_GrBlendCoeff, kOne_GrBlendCoeff);
return SkRef(&gDstOverPDXPF);
break;
}
case SkXfermode::kSrcIn_Mode: {
static GrPorterDuffXPFactory gSrcInPDXPF(kDA_GrBlendCoeff, kZero_GrBlendCoeff);
return SkRef(&gSrcInPDXPF);
break;
}
case SkXfermode::kDstIn_Mode: {
static GrPorterDuffXPFactory gDstInPDXPF(kZero_GrBlendCoeff, kSA_GrBlendCoeff);
return SkRef(&gDstInPDXPF);
break;
}
case SkXfermode::kSrcOut_Mode: {
static GrPorterDuffXPFactory gSrcOutPDXPF(kIDA_GrBlendCoeff, kZero_GrBlendCoeff);
return SkRef(&gSrcOutPDXPF);
break;
}
case SkXfermode::kDstOut_Mode: {
static GrPorterDuffXPFactory gDstOutPDXPF(kZero_GrBlendCoeff, kISA_GrBlendCoeff);
return SkRef(&gDstOutPDXPF);
break;
}
case SkXfermode::kSrcATop_Mode: {
static GrPorterDuffXPFactory gSrcATopPDXPF(kDA_GrBlendCoeff, kISA_GrBlendCoeff);
return SkRef(&gSrcATopPDXPF);
break;
}
case SkXfermode::kDstATop_Mode: {
static GrPorterDuffXPFactory gDstATopPDXPF(kIDA_GrBlendCoeff, kSA_GrBlendCoeff);
return SkRef(&gDstATopPDXPF);
break;
}
case SkXfermode::kXor_Mode: {
static GrPorterDuffXPFactory gXorPDXPF(kIDA_GrBlendCoeff, kISA_GrBlendCoeff);
return SkRef(&gXorPDXPF);
break;
}
case SkXfermode::kPlus_Mode: {
static GrPorterDuffXPFactory gPlusPDXPF(kOne_GrBlendCoeff, kOne_GrBlendCoeff);
return SkRef(&gPlusPDXPF);
break;
}
case SkXfermode::kModulate_Mode: {
static GrPorterDuffXPFactory gModulatePDXPF(kZero_GrBlendCoeff, kSC_GrBlendCoeff);
return SkRef(&gModulatePDXPF);
break;
}
case SkXfermode::kScreen_Mode: {
static GrPorterDuffXPFactory gScreenPDXPF(kOne_GrBlendCoeff, kISC_GrBlendCoeff);
return SkRef(&gScreenPDXPF);
break;
}
default:
return NULL;
}
}
const GrXferProcessor* GrPorterDuffXPFactory::createXferProcessor() const {
return GrPorterDuffXferProcessor::Create(fSrc, fDst);
}
bool GrPorterDuffXPFactory::supportsRGBCoverage(GrColor /*knownColor*/,
uint32_t knownColorFlags) const {
if (kOne_GrBlendCoeff == fSrc && kISA_GrBlendCoeff == fDst &&
kRGBA_GrColorComponentFlags == knownColorFlags) {
return true;
}
return false;
}
|
