dungeon_crawler: prototype/sdr/deferred

dungeon_crawler

ha! fixed deferred

author	John Tsiombikas <nuclear@member.fsf.org>
date	Tue, 28 Aug 2012 03:18:47 +0300
parents	938a6a155c94
children	85734f319626

rev	line source
nuclear@29	1 uniform sampler2D mrt0, mrt1, mrt2, mrt3;
nuclear@30	2 uniform vec2 tex_scale, fb_size;
nuclear@30	3
nuclear@33	4 uniform vec3 light_color;
nuclear@33	5 uniform float light_radius;
nuclear@33	6
nuclear@30	7 varying vec3 ltpos;
nuclear@29	8
nuclear@29	9 void main()
nuclear@29	10 {
nuclear@30	11 vec2 tc = gl_FragCoord.xy * tex_scale / fb_size;
nuclear@29	12
nuclear@30	13 vec3 pos = texture2D(mrt0, tc).xyz;
nuclear@30	14 vec3 norm = texture2D(mrt1, tc).xyz;
nuclear@30	15
nuclear@30	16 vec4 texel3 = texture2D(mrt2, tc);
nuclear@30	17 vec3 dcol = texel3.xyz;
nuclear@30	18 float shin = texel3.w;
nuclear@30	19
nuclear@30	20 vec3 ldir = ltpos - pos;
nuclear@33	21 float light_dist = length(ldir);
nuclear@30	22 ldir = normalize(ldir);
nuclear@30	23
nuclear@30	24 float ndotl = dot(norm, ldir);
nuclear@30	25 vec3 color = dcol * ndotl;
nuclear@30	26
nuclear@33	27 float atten = 1.0 - light_dist / light_radius;
nuclear@33	28 atten = clamp(atten, 0.0, 1.0);
nuclear@29	29
nuclear@33	30 gl_FragColor = vec4(color * light_color * atten, 1.0);
nuclear@29	31 }