dungeon_crawler: prototype/sdr/deferred.p.glsl annotate

dungeon_crawler

added samurai's texel center fix for the color grading palette lookup

author	John Tsiombikas <nuclear@member.fsf.org>
date	Tue, 23 Oct 2012 14:57:08 +0300
parents	48cfd351a9be
children

rev	line source
nuclear@35	1 uniform sampler2D mrt0, mrt1, mrt2;
nuclear@18	2 uniform vec2 tex_scale;
nuclear@18	3
nuclear@17	4 void main()
nuclear@17	5 {
nuclear@19	6 vec2 tc = gl_TexCoord[0].st;
nuclear@19	7
nuclear@19	8 vec4 texel;
nuclear@35	9 if(tc.x < 0.33333333) {
nuclear@35	10 texel = texture2D(mrt0, tc * vec2(3.0, 1.0) * tex_scale);
nuclear@35	11 } else if(tc.x < 0.66666666) {
nuclear@35	12 texel = texture2D(mrt1, (tc - vec2(0.33333333, 0.0)) * vec2(3.0, 1.0) * tex_scale);
nuclear@19	13 } else {
nuclear@35	14 texel = texture2D(mrt2, (tc - vec2(0.66666666, 0.0)) * vec2(3.0, 1.0) * tex_scale);
nuclear@19	15 }
nuclear@19	16
nuclear@19	17 gl_FragColor = texel;
nuclear@17	18 }