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
|
#!/usr/bin/env node
const path = require('path');
const fs = require('fs');
const inputPath = 'mapbox-gl-js/src/shaders';
const outputPath = 'src/mbgl/shaders';
require('./style-code');
const vertexPrelude = fs.readFileSync(path.join(inputPath, '_prelude.vertex.glsl'));
const fragmentPrelude = fs.readFileSync(path.join(inputPath, '_prelude.fragment.glsl'));
writeIfModified(path.join(outputPath, 'preludes.hpp'), `// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED.
#pragma once
namespace mbgl {
namespace shaders {
extern const char* vertexPrelude;
extern const char* fragmentPrelude;
} // namespace shaders
} // namespace mbgl
`);
writeIfModified(path.join(outputPath, 'preludes.cpp'), `// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED.
#include <mbgl/shaders/preludes.hpp>
namespace mbgl {
namespace shaders {
const char* vertexPrelude = R"MBGL_SHADER(
${vertexPrelude}
)MBGL_SHADER";
const char* fragmentPrelude = R"MBGL_SHADER(
${fragmentPrelude}
)MBGL_SHADER";
} // namespace shaders
} // namespace mbgl
`);
[
'circle',
'collision_box',
'debug',
'extrusion_texture',
'fill',
'fill_extrusion',
'fill_extrusion_pattern',
'fill_outline',
'fill_outline_pattern',
'fill_pattern',
'line',
'line_pattern',
'line_sdf',
'raster',
'symbol_icon',
'symbol_sdf'
].forEach(function (shaderName) {
const re = /#pragma mapbox: ([\w]+) ([\w]+) ([\w]+) ([\w]+)/g;
const fragmentPragmas = new Set();
let fragmentSource = fs.readFileSync(path.join(inputPath, shaderName + '.fragment.glsl'), 'utf8');
let vertexSource = fs.readFileSync(path.join(inputPath, shaderName + '.vertex.glsl'), 'utf8');
fragmentSource = fragmentSource.replace(re, (match, operation, precision, type, name) => {
fragmentPragmas.add(name);
return operation === "define" ? `
#ifndef HAS_UNIFORM_u_${name}
varying ${precision} ${type} ${name};
#else
uniform ${precision} ${type} u_${name};
#endif
` : `
#ifdef HAS_UNIFORM_u_${name}
${precision} ${type} ${name} = u_${name};
#endif
`;
});
vertexSource = vertexSource.replace(re, (match, operation, precision, type, name) => {
const a_type = type === "float" ? "vec2" : "vec4";
if (fragmentPragmas.has(name)) {
return operation === "define" ? `
#ifdef HAS_UNIFORM_u_${name}
uniform lowp float a_${name}_t;
attribute ${precision} ${a_type} a_${name};
varying ${precision} ${type} ${name};
#else
uniform ${precision} ${type} u_${name};
#endif
` : `
#ifndef HAS_UNIFORM_u_${name}
${name} = unpack_mix_${a_type}(a_${name}, a_${name}_t);
#else
${precision} ${type} ${name} = u_${name};
#endif
`;
} else {
return operation === "define" ? `
#ifdef HAS_UNIFORM_u_${name}
uniform lowp float a_${name}_t;
attribute ${precision} ${a_type} a_${name};
#else
uniform ${precision} ${type} u_${name};
#endif
` : `
#ifndef HAS_UNIFORM_u_${name}
${precision} ${type} ${name} = unpack_mix_${a_type}(a_${name}, a_${name}_t);
#else
${precision} ${type} ${name} = u_${name};
#endif
`;
}
});
writeIfModified(path.join(outputPath, `${shaderName}.hpp`), `// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED.
#pragma once
namespace mbgl {
namespace shaders {
class ${shaderName} {
public:
static const char* name;
static const char* vertexSource;
static const char* fragmentSource;
};
} // namespace shaders
} // namespace mbgl
`);
writeIfModified(path.join(outputPath, `${shaderName}.cpp`), `// NOTE: DO NOT CHANGE THIS FILE. IT IS AUTOMATICALLY GENERATED.
#include <mbgl/shaders/${shaderName}.hpp>
namespace mbgl {
namespace shaders {
const char* ${shaderName}::name = "${shaderName}";
const char* ${shaderName}::vertexSource = R"MBGL_SHADER(
${vertexSource}
)MBGL_SHADER";
const char* ${shaderName}::fragmentSource = R"MBGL_SHADER(
${fragmentSource}
)MBGL_SHADER";
} // namespace shaders
} // namespace mbgl
`);
});
|
