nuclear@65: uniform sampler2D fbtex;
nuclear@72: uniform sampler3D paltex;
nuclear@65: 
nuclear@65: void main()
nuclear@65: {
nuclear@72: 	// lookup the render output color for this pixel
nuclear@77: 	vec4 fbcolor = texture2D(fbtex, gl_TexCoord[0].st);
nuclear@77: 	vec3 tc = (fbcolor.xyz * 15.0 + 0.5) / 16.0;
nuclear@72: 	// use that color as an index into the palette
nuclear@77: 	vec3 color = texture3D(paltex, tc).xyz;
nuclear@77: 	// gamma-correction
nuclear@78: 
nuclear@78: 	gl_FragColor = vec4(color, fbcolor.a);
nuclear@78: 	//gl_FragColor = vec4(pow(color, 1.0 / 2.2), fbcolor.a);
nuclear@78: 	//gl_FragColor = vec4(sqrt(color), fbcolor.a);
nuclear@65: }