gzdoom/wadsrc/static/shaders/glsl/func_warp1.fp
2014-07-15 00:19:41 +02:00

17 lines
327 B
GLSL

uniform float timer;
vec4 ProcessTexel()
{
vec2 texCoord = vTexCoord.st;
const float pi = 3.14159265358979323846;
vec2 offset = vec2(0,0);
offset.y = sin(pi * 2.0 * (texCoord.x + timer * 0.125)) * 0.1;
offset.x = sin(pi * 2.0 * (texCoord.y + timer * 0.125)) * 0.1;
texCoord += offset;
return getTexel(texCoord);
}