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
|
/*
* 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 GrDefaultGeoProcFactory_DEFINED
#define GrDefaultGeoProcFactory_DEFINED
#include "GrColorSpaceXform.h"
#include "GrGeometryProcessor.h"
#include "GrShaderCaps.h"
/*
* A factory for creating default Geometry Processors which simply multiply position by the uniform
* view matrix and wire through color, coverage, UV coords if requested.
*/
namespace GrDefaultGeoProcFactory {
// Structs for adding vertex attributes
struct PositionAttr {
SkPoint fPosition;
};
struct PositionCoverageAttr {
SkPoint fPosition;
float fCoverage;
};
struct PositionColorAttr {
SkPoint fPosition;
SkColor fColor;
};
struct PositionColorCoverageAttr {
SkPoint fPosition;
SkColor fColor;
float fCoverage;
};
struct PositionLocalCoordAttr {
SkPoint fPosition;
SkPoint fLocalCoord;
};
struct PositionLocalCoordCoverageAttr {
SkPoint fPosition;
SkPoint fLocalCoord;
float fCoverage;
};
struct PositionColorLocalCoordAttr {
SkPoint fPosition;
GrColor fColor;
SkPoint fLocalCoord;
};
struct PositionColorLocalCoordCoverageAttr {
SkPoint fPosition;
GrColor fColor;
SkPoint fLocalCoord;
float fCoverage;
};
struct Color {
enum Type {
kPremulGrColorUniform_Type,
kPremulGrColorAttribute_Type,
kUnpremulSkColorAttribute_Type,
};
explicit Color(GrColor color)
: fType(kPremulGrColorUniform_Type)
, fColor(color)
, fColorSpaceXform(nullptr) {}
Color(Type type)
: fType(type)
, fColor(GrColor_ILLEGAL)
, fColorSpaceXform(nullptr) {
SkASSERT(type != kPremulGrColorUniform_Type);
}
Type fType;
GrColor fColor;
// This only applies to SkColor. Any GrColors are assumed to have been color converted
// during paint conversion.
sk_sp<GrColorSpaceXform> fColorSpaceXform;
};
struct Coverage {
enum Type {
kSolid_Type,
kUniform_Type,
kAttribute_Type,
};
explicit Coverage(uint8_t coverage) : fType(kUniform_Type), fCoverage(coverage) {}
Coverage(Type type) : fType(type), fCoverage(0xff) {
SkASSERT(type != kUniform_Type);
}
Type fType;
uint8_t fCoverage;
};
struct LocalCoords {
enum Type {
kUnused_Type,
kUsePosition_Type,
kHasExplicit_Type,
kHasTransformed_Type,
};
LocalCoords(Type type) : fType(type), fMatrix(nullptr) {}
LocalCoords(Type type, const SkMatrix* matrix) : fType(type), fMatrix(matrix) {
SkASSERT(kUnused_Type != type);
}
bool hasLocalMatrix() const { return nullptr != fMatrix; }
Type fType;
const SkMatrix* fMatrix;
};
struct Bones {
Bones(const float bones[], int boneCount)
: fBones(bones)
, fBoneCount(boneCount) {}
const float* fBones;
int fBoneCount;
};
sk_sp<GrGeometryProcessor> Make(const GrShaderCaps*,
const Color&,
const Coverage&,
const LocalCoords&,
const SkMatrix& viewMatrix);
/*
* Use this factory to create a GrGeometryProcessor that expects a device space vertex position
* attribute. The view matrix must still be provided to compute correctly transformed
* coordinates for GrFragmentProcessors. It may fail if the view matrix is not invertible.
*/
sk_sp<GrGeometryProcessor> MakeForDeviceSpace(const GrShaderCaps*,
const Color&,
const Coverage&,
const LocalCoords&,
const SkMatrix& viewMatrix);
/*
* Use this factory to create a GrGeometryProcessor that supports skeletal animation through
* deformation of vertices using matrices that are passed in. This should only be called from
* GrDrawVerticesOp.
*/
sk_sp<GrGeometryProcessor> MakeWithBones(const GrShaderCaps*,
const Color&,
const Coverage&,
const LocalCoords&,
const Bones&,
const SkMatrix& viewMatrix);
};
#endif
|
