raze-gles/wadsrc/static/shaders/glsl/func_warp1.fp
2020-05-30 23:10:17 +02:00

19 lines
340 B
GLSL

vec2 GetTexCoord()
{
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;
return texCoord + offset;
}
vec4 ProcessTexel()
{
return getTexel(GetTexCoord());
}