blob: bd3528fa94a74acba53130f1508c703c1842b92e (
plain)
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
|
/*
Copyright (c) 2019 The Khronos Group Inc.
Use of this source code is governed by an MIT-style license that can be
found in the LICENSE.txt file.
*/
attribute vec4 gtf_Color;
attribute vec4 gtf_Vertex;
uniform mat4 gtf_ModelViewProjectionMatrix;
varying vec4 color;
bvec2 _not(in bvec2 a)
{
bvec2 result;
if(a[0]) result[0] = false;
else result[0] = true;
if(a[1]) result[1] = false;
else result[1] = true;
return result;
}
void main (void)
{
vec2 c = floor(1.5 * gtf_Color.rg); // 1/3 true, 2/3 false
color = vec4(vec2(_not(bvec2(c))), 0.0, 1.0);
gl_Position = gtf_ModelViewProjectionMatrix * gtf_Vertex;
}
|