fixed incorrect checking of the existence of GLX_EXT_swap_control and friends
[demo_prior] / sdr / vignette.p.glsl
1 uniform vec3 color;
2 uniform float offset, sharpness;
3
4 void main()
5 {
6         vec2 p = gl_TexCoord[0].st * 2.0 - 1.0;
7         float d = max(length(p) - offset, 0.0);
8         float vnt = pow(d, sharpness);
9
10         gl_FragColor = vec4(color, gl_Color.a * vnt);
11 }