mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-17 18:30:58 +00:00
928dd92276
I realized it's pretty silly using colormap + palette when I can just combine the two into one and have a 2D palette. This is in preparation for that.
30 lines
620 B
GLSL
30 lines
620 B
GLSL
uniform sampler2D palette;
|
|
uniform sampler2D solid;
|
|
uniform sampler2D trans;
|
|
uniform float realtime;
|
|
|
|
varying vec3 direction;
|
|
|
|
const float SCALE = 189.0 / 64.0;
|
|
|
|
void
|
|
main (void)
|
|
{
|
|
float len;
|
|
float pix;
|
|
vec2 flow = vec2 (1.0, 1.0);
|
|
vec2 st;
|
|
vec3 dir = direction;
|
|
|
|
dir.z *= 3.0;
|
|
len = dot (dir, dir);
|
|
len = SCALE * inversesqrt (len);
|
|
|
|
st = direction.xy * len + flow * realtime / 8.0;
|
|
pix = texture2D (trans, st).r;
|
|
if (pix == 0.0) {
|
|
st = direction.xy * len + flow * realtime / 16.0;
|
|
pix = texture2D (solid, st).r;
|
|
}
|
|
gl_FragColor = texture2D (palette, vec2 (pix, 0.0));
|
|
}
|