blob: d62c3201dd66961428299738a24887e3b5b2daf8 (
plain)
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
|
/*
* 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 GrDisableColorXP_DEFINED
#define GrDisableColorXP_DEFINED
#include "GrTypes.h"
#include "GrXferProcessor.h"
class GrProcOptInfo;
/**
* This xfer processor disables color writing. Thus color and coverage and ignored and no blending
* occurs. This XP is usful for things like stenciling.
*/
class GrDisableColorXP : public GrXferProcessor {
public:
static GrXferProcessor* Create() {
return SkNEW(GrDisableColorXP);
}
~GrDisableColorXP() SK_OVERRIDE {};
const char* name() const SK_OVERRIDE { return "Disable Color"; }
void getGLProcessorKey(const GrGLCaps& caps, GrProcessorKeyBuilder* b) const SK_OVERRIDE;
GrGLXferProcessor* createGLInstance() const SK_OVERRIDE;
bool hasSecondaryOutput() const SK_OVERRIDE { return false; }
GrXferProcessor::OptFlags getOptimizations(const GrProcOptInfo& colorPOI,
const GrProcOptInfo& coveragePOI,
bool doesStencilWrite,
GrColor* color,
const GrDrawTargetCaps& caps) SK_OVERRIDE {
return GrXferProcessor::kIgnoreColor_OptFlag | GrXferProcessor::kIgnoreCoverage_OptFlag;
}
void getBlendInfo(GrXferProcessor::BlendInfo* blendInfo) const SK_OVERRIDE;
private:
GrDisableColorXP();
bool onIsEqual(const GrXferProcessor& xpBase) const SK_OVERRIDE {
return true;
}
typedef GrXferProcessor INHERITED;
};
///////////////////////////////////////////////////////////////////////////////
class GrDisableColorXPFactory : public GrXPFactory {
public:
static GrXPFactory* Create() {
return SkNEW(GrDisableColorXPFactory);
}
GrXferProcessor* createXferProcessor(const GrProcOptInfo& colorPOI,
const GrProcOptInfo& coveragePOI) const SK_OVERRIDE;
bool supportsRGBCoverage(GrColor knownColor, uint32_t knownColorFlags) const SK_OVERRIDE {
return true;
}
bool canApplyCoverage(const GrProcOptInfo& colorPOI,
const GrProcOptInfo& coveragePOI) const SK_OVERRIDE {
return true;
}
bool canTweakAlphaForCoverage() const SK_OVERRIDE { return true; }
void getInvariantOutput(const GrProcOptInfo& colorPOI, const GrProcOptInfo& coveragePOI,
GrXPFactory::InvariantOutput* output) const SK_OVERRIDE {
output->fBlendedColorFlags = 0;
output->fWillBlendWithDst = 0;
}
bool willReadDst() const SK_OVERRIDE { return false; }
private:
GrDisableColorXPFactory();
bool onIsEqual(const GrXPFactory& xpfBase) const SK_OVERRIDE {
return true;
}
GR_DECLARE_XP_FACTORY_TEST;
typedef GrXPFactory INHERITED;
};
#endif
|
