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

dungeon_crawler

passing shininess and specular in mrt

author	John Tsiombikas <nuclear@member.fsf.org>
date	Tue, 28 Aug 2012 03:34:56 +0300
parents	0357994effe2
children	d0e93b4d9ec9

rev	line source
nuclear@20	1 /* MRT assignments
nuclear@20	2 * 0 - RGB: position
nuclear@20	3 * 1 - RGB: normal
nuclear@20	4 * 3 - RGB: diffuse color, A: shininess str.
nuclear@20	5 * 4 - unused
nuclear@20	6 */
nuclear@20	7
nuclear@20	8 uniform sampler2D tex_dif, tex_norm;
nuclear@20	9
nuclear@20	10 varying vec3 pos, norm;
nuclear@16	11
nuclear@16	12 void main()
nuclear@16	13 {
nuclear@20	14 vec3 n = normalize(norm);
nuclear@20	15
nuclear@16	16 vec4 texel = texture2D(tex_dif, gl_TexCoord[0].st);
nuclear@20	17 vec3 diffuse = (gl_FrontMaterial.diffuse * texel).xyz;
nuclear@20	18 vec3 spec = gl_FrontMaterial.specular.xyz;
nuclear@20	19 float sstr = (spec.x + spec.y + spec.z) / 3.0;
nuclear@20	20
nuclear@34	21 gl_FragData[0] = vec4(pos, gl_FrontMaterial.shininess);
nuclear@20	22 gl_FragData[1] = vec4(norm, 0.0);
nuclear@20	23 gl_FragData[2] = vec4(diffuse, sstr);
nuclear@33	24 //gl_FragData[3] = vec4(0.0, 0.0, 0.0, 0.0);
nuclear@16	25 }