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
|
/*
* Copyright 2016 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SKSL_LAYOUT
#define SKSL_LAYOUT
namespace SkSL {
/**
* Represents a layout block appearing before a variable declaration, as in:
*
* layout (location = 0) int x;
*/
struct Layout {
Layout(const ASTLayout& layout)
: fLocation(layout.fLocation)
, fBinding(layout.fBinding)
, fIndex(layout.fIndex)
, fSet(layout.fSet)
, fBuiltin(layout.fBuiltin)
, fInputAttachmentIndex(layout.fInputAttachmentIndex)
, fOriginUpperLeft(layout.fOriginUpperLeft)
, fOverrideCoverage(layout.fOverrideCoverage)
, fBlendSupportAllEquations(layout.fBlendSupportAllEquations)
, fFormat(layout.fFormat)
, fPushConstant(layout.fPushConstant) {}
Layout(int location, int binding, int index, int set, int builtin, int inputAttachmentIndex,
bool originUpperLeft, bool overrideCoverage, bool blendSupportAllEquations,
ASTLayout::Format format, bool pushconstant)
: fLocation(location)
, fBinding(binding)
, fIndex(index)
, fSet(set)
, fBuiltin(builtin)
, fInputAttachmentIndex(inputAttachmentIndex)
, fOriginUpperLeft(originUpperLeft)
, fOverrideCoverage(overrideCoverage)
, fBlendSupportAllEquations(blendSupportAllEquations)
, fFormat(format)
, fPushConstant(pushconstant) {}
Layout()
: fLocation(-1)
, fBinding(-1)
, fIndex(-1)
, fSet(-1)
, fBuiltin(-1)
, fInputAttachmentIndex(-1)
, fOriginUpperLeft(false)
, fOverrideCoverage(false)
, fBlendSupportAllEquations(false)
, fFormat(ASTLayout::Format::kUnspecified)
, fPushConstant(false) {}
SkString description() const {
SkString result;
SkString separator;
if (fLocation >= 0) {
result += separator + "location = " + to_string(fLocation);
separator = ", ";
}
if (fBinding >= 0) {
result += separator + "binding = " + to_string(fBinding);
separator = ", ";
}
if (fIndex >= 0) {
result += separator + "index = " + to_string(fIndex);
separator = ", ";
}
if (fSet >= 0) {
result += separator + "set = " + to_string(fSet);
separator = ", ";
}
if (fBuiltin >= 0) {
result += separator + "builtin = " + to_string(fBuiltin);
separator = ", ";
}
if (fInputAttachmentIndex >= 0) {
result += separator + "input_attachment_index = " + to_string(fBuiltin);
separator = ", ";
}
if (fOriginUpperLeft) {
result += separator + "origin_upper_left";
separator = ", ";
}
if (fOverrideCoverage) {
result += separator + "override_coverage";
separator = ", ";
}
if (fBlendSupportAllEquations) {
result += separator + "blend_support_all_equations";
separator = ", ";
}
if (ASTLayout::Format::kUnspecified != fFormat) {
result += separator + ASTLayout::FormatToStr(fFormat);
separator = ", ";
}
if (fPushConstant) {
result += separator + "push_constant";
separator = ", ";
}
if (result.size() > 0) {
result = "layout (" + result + ")";
}
return result;
}
bool operator==(const Layout& other) const {
return fLocation == other.fLocation &&
fBinding == other.fBinding &&
fIndex == other.fIndex &&
fSet == other.fSet &&
fBuiltin == other.fBuiltin &&
fInputAttachmentIndex == other.fInputAttachmentIndex &&
fOriginUpperLeft == other.fOriginUpperLeft &&
fOverrideCoverage == other.fOverrideCoverage &&
fBlendSupportAllEquations == other.fBlendSupportAllEquations &&
fFormat == other.fFormat;
}
bool operator!=(const Layout& other) const {
return !(*this == other);
}
int fLocation;
int fBinding;
int fIndex;
int fSet;
// builtin comes from SPIR-V and identifies which particular builtin value this object
// represents.
int fBuiltin;
// input_attachment_index comes from Vulkan/SPIR-V to connect a shader variable to the a
// corresponding attachment on the subpass in which the shader is being used.
int fInputAttachmentIndex;
bool fOriginUpperLeft;
bool fOverrideCoverage;
bool fBlendSupportAllEquations;
ASTLayout::Format fFormat;
bool fPushConstant;
};
} // namespace
#endif
|
