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
|
[require]
GLSL >= 1.50
GL_ARB_tessellation_shader
[vertex shader]
#version 150
in vec4 vertex;
void main()
{
gl_Position = vertex;
}
[tessellation control shader]
#version 150
#extension GL_ARB_tessellation_shader: require
layout(vertices = 3) out;
void main()
{
gl_TessLevelInner[0] = 1.0;
gl_TessLevelInner[1] = 1.0;
gl_TessLevelOuter[0] = 1.0;
gl_TessLevelOuter[1] = 1.0;
gl_TessLevelOuter[2] = 1.0;
gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
}
[tessellation evaluation shader]
#version 150
#extension GL_ARB_tessellation_shader: require
layout(triangles) in;
void main()
{
int index = int(gl_TessCoord.y + (2 * gl_TessCoord.z));
gl_Position = gl_in[index].gl_Position;
}
[fragment shader]
#version 150
void main()
{
gl_FragColor = vec4(0.0, 1.0, 0.0, 1.0);
}
[vertex data]
vertex/float/2
-1.0 -1.0
1.0 -1.0
-1.0 1.0
-1.0 1.0
1.0 -1.0
1.0 1.0
[test]
clear color 0.1 0.1 0.1 0.1
clear
patch parameter vertices 3
draw arrays GL_PATCHES 0 6
probe all rgba 0.0 1.0 0.0 1.0
|
