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
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef GrGLSL_DEFINED
#define GrGLSL_DEFINED
#include "GrTypesPriv.h"
#include "SkString.h"
class GrShaderCaps;
// Limited set of GLSL versions we build shaders for. Caller should round
// down the GLSL version to one of these enums.
enum GrGLSLGeneration {
/**
* Desktop GLSL 1.10 and ES2 shading language (based on desktop GLSL 1.20)
*/
k110_GrGLSLGeneration,
/**
* Desktop GLSL 1.30
*/
k130_GrGLSLGeneration,
/**
* Desktop GLSL 1.40
*/
k140_GrGLSLGeneration,
/**
* Desktop GLSL 1.50
*/
k150_GrGLSLGeneration,
/**
* Desktop GLSL 3.30, and ES GLSL 3.00
*/
k330_GrGLSLGeneration,
/**
* Desktop GLSL 4.00
*/
k400_GrGLSLGeneration,
/**
* Desktop GLSL 4.20
*/
k420_GrGLSLGeneration,
/**
* ES GLSL 3.10 only TODO Make GLSLCap objects to make this more granular
*/
k310es_GrGLSLGeneration,
/**
* ES GLSL 3.20
*/
k320es_GrGLSLGeneration,
};
bool GrGLSLSupportsNamedFragmentShaderOutputs(GrGLSLGeneration);
/**
* Adds a line of GLSL code to declare the default precision for float types.
*/
void GrGLSLAppendDefaultFloatPrecisionDeclaration(GrSLPrecision,
const GrShaderCaps&,
SkString* out);
/**
* Converts a GrSLPrecision to its corresponding GLSL precision qualifier.
*/
static inline const char* GrGLSLPrecisionString(GrSLPrecision p) {
switch (p) {
case kLow_GrSLPrecision:
return "lowp";
case kMedium_GrSLPrecision:
return "mediump";
case kHigh_GrSLPrecision:
return "highp";
case kDefault_GrSLPrecision:
return "";
default:
SK_ABORT("Unexpected precision type.");
return "";
}
}
/**
* Converts a GrSLType to a string containing the name of the equivalent GLSL type.
*/
static inline const char* GrGLSLTypeString(GrSLType t) {
switch (t) {
case kVoid_GrSLType:
return "void";
case kHighFloat_GrSLType:
return "highfloat";
case kHighFloat2_GrSLType:
return "highfloat2";
case kHighFloat3_GrSLType:
return "highfloat3";
case kHighFloat4_GrSLType:
return "highfloat4";
case kHalf_GrSLType:
return "half";
case kHalf2_GrSLType:
return "half2";
case kHalf3_GrSLType:
return "half3";
case kHalf4_GrSLType:
return "half4";
case kHighFloat2x2_GrSLType:
return "highfloat2x2";
case kHighFloat3x3_GrSLType:
return "highfloat3x3";
case kHighFloat4x4_GrSLType:
return "highfloat4x4";
case kHalf2x2_GrSLType:
return "half2x2";
case kHalf3x3_GrSLType:
return "half3x3";
case kHalf4x4_GrSLType:
return "half4x4";
case kTexture2DSampler_GrSLType:
return "sampler2D";
case kITexture2DSampler_GrSLType:
return "isampler2D";
case kTextureExternalSampler_GrSLType:
return "samplerExternalOES";
case kTexture2DRectSampler_GrSLType:
return "sampler2DRect";
case kBufferSampler_GrSLType:
return "samplerBuffer";
case kBool_GrSLType:
return "bool";
case kShort_GrSLType:
return "short";
case kUShort_GrSLType:
return "ushort";
case kInt_GrSLType:
return "int";
case kInt2_GrSLType:
return "int2";
case kInt3_GrSLType:
return "int3";
case kInt4_GrSLType:
return "int4";
case kUint_GrSLType:
return "uint";
case kTexture2D_GrSLType:
return "texture2D";
case kSampler_GrSLType:
return "sampler";
case kImageStorage2D_GrSLType:
return "image2D";
case kIImageStorage2D_GrSLType:
return "iimage2D";
}
SK_ABORT("Unknown shader var type.");
return ""; // suppress warning
}
#endif
|
