mirror of
https://git.code.sf.net/p/quake/quakeforge
synced 2024-11-30 08:00:51 +00:00
29 lines
466 B
GLSL
29 lines
466 B
GLSL
//precision mediump float;
|
|
uniform sampler2D palette;
|
|
uniform vec4 fog;
|
|
|
|
varying float color;
|
|
|
|
float
|
|
sqr (float x)
|
|
{
|
|
return x * x;
|
|
}
|
|
|
|
vec4
|
|
fogBlend (vec4 color)
|
|
{
|
|
float f;
|
|
vec4 fog_color = vec4 (fog.rgb, 1.0);
|
|
|
|
f = exp (-sqr (fog.a * gl_FragCoord.z / gl_FragCoord.w));
|
|
return vec4 (mix (fog_color.rgb, color.rgb, f), color.a);
|
|
}
|
|
|
|
void
|
|
main (void)
|
|
{
|
|
if (color == 1.0)
|
|
discard;
|
|
gl_FragColor = fogBlend (texture2D (palette, vec2 (color, 0.0)));
|
|
}
|