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

19 lines
341 B
GLSL

uniform sampler2D tex;
uniform float time;
void main()
{
vec2 change;
change.x = abs(sin(time * gl_Color.r));
change.y = abs(cos(time * gl_Color.g));
change = smoothstep(0.0, 1.0, change) * 0.5;
vec2 tc = gl_TexCoord[0].xy;
tc = smoothstep(0.5 - change, 0.5 + change, tc);
vec4 tcol = texture2D(tex, tc);
gl_FragColor = tcol;
}