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
|
/* The ARB_shading_language_420pack suggests:
*
* Verify that the following three matrices are identical:
*
* mat2x2 a = mat2( vec2( 1.0, 0.0 ), vec2( 0.0, 1.0 ) );
* mat2x2 b = { vec2( 1.0, 0.0 ), vec2( 0.0, 1.0 ) };
* mat2x2 c = { { 1.0, 0.0 }, { 0.0, 1.0 } };
*/
[require]
GLSL >= 1.30
GL_ARB_shading_language_420pack
[vertex shader]
#extension GL_ARB_shading_language_420pack: enable
in vec4 vertex;
out vec4 color;
void main()
{
mat2x2 a = mat2( vec2( 1.0, 0.0 ), vec2( 0.0, 1.0 ) );
mat2x2 b = { vec2( 1.0, 0.0 ), vec2( 0.0, 1.0 ) };
mat2x2 c = { { 1.0, 0.0 }, { 0.0, 1.0 } };
color = vec4(0.0, 1.0, 0.0, 1.0);
if (a.length() != b.length() || a.length() != c.length()) {
color = vec4(0.0, 0.0, 1.0, 1.0);
} else {
for (int i = 0; i < a.length(); i++) {
if (a[i] != b[i] || a[i] != c[i]) {
color = vec4(1.0, 0.0, 0.0, 1.0);
}
}
}
gl_Position = vertex;
}
[fragment shader]
in vec4 color;
out vec4 frag_color;
void main() {
frag_color = color;
}
[test]
draw rect -1 -1 2 2
probe all rgba 0.0 1.0 0.0 1.0
|
