1varying vec2 texCoord;
 2uniform sampler2D tex;
 3uniform vec2 texSize;
 4
 5const float scale[32] = float[](
 6	  0.0/255.0,   6.0/255.0,  12.0/255.0,  18.0/255.0,  24.0/255.0,  31.0/255.0,  37.0/255.0,  43.0/255.0,
 7	 49.0/255.0,  55.0/255.0,  61.0/255.0,  67.0/255.0,  73.0/255.0,  79.0/255.0,  86.0/255.0,  92.0/255.0,
 8	 98.0/255.0, 104.0/255.0, 111.0/255.0, 117.0/255.0, 123.0/255.0, 129.0/255.0, 135.0/255.0, 141.0/255.0,
 9	148.0/255.0, 154.0/255.0, 159.0/255.0, 166.0/255.0, 172.0/255.0, 178.0/255.0, 184.0/255.0, 191.0/255.0
10);
11
12void main() {
13	vec4 color = texture2D(tex, texCoord);
14	color.rgb = round(color.rgb * 31.0);
15	color = vec4(
16		scale[int(color.r)],
17		scale[int(color.g)],
18		scale[int(color.b)],
19		1.0
20	);
21	gl_FragColor = color;
22}