stk-code_catmod/data/shaders/caustics.frag
2013-11-30 21:33:06 +00:00

18 lines
384 B
GLSL

uniform sampler2D tex;
uniform sampler2D caustictex;
uniform vec2 dir;
uniform vec2 dir2;
void main()
{
vec2 tc = gl_TexCoord[0].xy;
vec3 col = texture2D(tex, tc).xyz;
float caustic = texture2D(caustictex, tc + dir).x;
float caustic2 = texture2D(caustictex, (tc.yx + dir2 * vec2(-0.6, 0.3)) * vec2(0.6)).x;
col += caustic * caustic2 * 10.0;
gl_FragColor = vec4(col, 1.0);
}