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1 /* | 1 /* |
2 * Copyright 2016 Google Inc. | 2 * Copyright 2016 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 #ifndef SKSL_LAYOUT | 8 #ifndef SKSL_LAYOUT |
9 #define SKSL_LAYOUT | 9 #define SKSL_LAYOUT |
10 | 10 |
11 namespace SkSL { | 11 namespace SkSL { |
12 | 12 |
13 /** | 13 /** |
14 * Represents a layout block appearing before a variable declaration, as in: | 14 * Represents a layout block appearing before a variable declaration, as in: |
15 * | 15 * |
16 * layout (location = 0) int x; | 16 * layout (location = 0) int x; |
17 */ | 17 */ |
18 struct Layout { | 18 struct Layout { |
19 Layout(const ASTLayout& layout) | 19 Layout(const ASTLayout& layout) |
20 : fLocation(layout.fLocation) | 20 : fLocation(layout.fLocation) |
21 , fBinding(layout.fBinding) | 21 , fBinding(layout.fBinding) |
22 , fIndex(layout.fIndex) | 22 , fIndex(layout.fIndex) |
23 , fSet(layout.fSet) | 23 , fSet(layout.fSet) |
24 , fBuiltin(layout.fBuiltin) {} | 24 , fBuiltin(layout.fBuiltin) |
| 25 , fOriginUpperLeft(layout.fOriginUpperLeft) {} |
25 | 26 |
26 Layout(int location, int binding, int index, int set, int builtin) | 27 Layout(int location, int binding, int index, int set, int builtin, bool orig
inUpperLeft) |
27 : fLocation(location) | 28 : fLocation(location) |
28 , fBinding(binding) | 29 , fBinding(binding) |
29 , fIndex(index) | 30 , fIndex(index) |
30 , fSet(set) | 31 , fSet(set) |
31 , fBuiltin(builtin) {} | 32 , fBuiltin(builtin) |
| 33 , fOriginUpperLeft(originUpperLeft) {} |
32 | 34 |
33 std::string description() const { | 35 std::string description() const { |
34 std::string result; | 36 std::string result; |
35 std::string separator; | 37 std::string separator; |
36 if (fLocation >= 0) { | 38 if (fLocation >= 0) { |
37 result += separator + "location = " + to_string(fLocation); | 39 result += separator + "location = " + to_string(fLocation); |
38 separator = ", "; | 40 separator = ", "; |
39 } | 41 } |
40 if (fBinding >= 0) { | 42 if (fBinding >= 0) { |
41 result += separator + "binding = " + to_string(fBinding); | 43 result += separator + "binding = " + to_string(fBinding); |
42 separator = ", "; | 44 separator = ", "; |
43 } | 45 } |
44 if (fIndex >= 0) { | 46 if (fIndex >= 0) { |
45 result += separator + "index = " + to_string(fIndex); | 47 result += separator + "index = " + to_string(fIndex); |
46 separator = ", "; | 48 separator = ", "; |
47 } | 49 } |
48 if (fSet >= 0) { | 50 if (fSet >= 0) { |
49 result += separator + "set = " + to_string(fSet); | 51 result += separator + "set = " + to_string(fSet); |
50 separator = ", "; | 52 separator = ", "; |
51 } | 53 } |
52 if (fBuiltin >= 0) { | 54 if (fBuiltin >= 0) { |
53 result += separator + "builtin = " + to_string(fBuiltin); | 55 result += separator + "builtin = " + to_string(fBuiltin); |
54 separator = ", "; | 56 separator = ", "; |
55 } | 57 } |
| 58 if (fOriginUpperLeft) { |
| 59 result += separator + "origin_upper_left"; |
| 60 separator = ", "; |
| 61 } |
56 if (result.length() > 0) { | 62 if (result.length() > 0) { |
57 result = "layout (" + result + ")"; | 63 result = "layout (" + result + ")"; |
58 } | 64 } |
59 return result; | 65 return result; |
60 } | 66 } |
61 | 67 |
62 bool operator==(const Layout& other) const { | 68 bool operator==(const Layout& other) const { |
63 return fLocation == other.fLocation && | 69 return fLocation == other.fLocation && |
64 fBinding == other.fBinding && | 70 fBinding == other.fBinding && |
65 fIndex == other.fIndex && | 71 fIndex == other.fIndex && |
66 fSet == other.fSet && | 72 fSet == other.fSet && |
67 fBuiltin == other.fBuiltin; | 73 fBuiltin == other.fBuiltin; |
68 } | 74 } |
69 | 75 |
70 bool operator!=(const Layout& other) const { | 76 bool operator!=(const Layout& other) const { |
71 return !(*this == other); | 77 return !(*this == other); |
72 } | 78 } |
73 | 79 |
74 const int fLocation; | 80 // everything but builtin is in the GLSL spec; builtin comes from SPIR-V and
identifies which |
75 const int fBinding; | 81 // particular builtin value this object represents. |
76 const int fIndex; | 82 int fLocation; |
77 const int fSet; | 83 int fBinding; |
78 const int fBuiltin; | 84 int fIndex; |
| 85 int fSet; |
| 86 int fBuiltin; |
| 87 bool fOriginUpperLeft; |
79 }; | 88 }; |
80 | 89 |
81 } // namespace | 90 } // namespace |
82 | 91 |
83 #endif | 92 #endif |
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