intravenous: sdr/vein.v.glsl annotate

intravenous

normalmap

author	John Tsiombikas <nuclear@member.fsf.org>
date	Sun, 22 Apr 2012 05:20:03 +0300
parents	94d4c60af435
children	2723dc026c4f

rev	line source
nuclear@3	1 attribute vec3 attr_tang;
nuclear@3	2
nuclear@3	3 varying vec3 vpos, vnorm;
nuclear@3	4 varying vec3 ldir, vdir;
nuclear@3	5
nuclear@3	6 void main()
nuclear@3	7 {
nuclear@3	8 gl_Position = ftransform();
nuclear@3	9 vpos = (gl_ModelViewMatrix * gl_Vertex).xyz;
nuclear@3	10 vec3 norm = gl_NormalMatrix * gl_Normal;
nuclear@3	11 vec3 tang = gl_NormalMatrix * attr_tang;
nuclear@3	12
nuclear@3	13 vec3 n = normalize(norm);
nuclear@3	14 vec3 t = normalize(tang);
nuclear@3	15 vec3 b = cross(n, t);
nuclear@3	16
nuclear@3	17 mat3 tbn_mat = mat3(
nuclear@3	18 t.x, b.x, n.x,
nuclear@3	19 t.y, b.y, n.y,
nuclear@3	20 t.z, b.z, n.z);
nuclear@3	21 ldir = tbn_mat * (gl_LightSource[0].position.xyz - vpos);
nuclear@3	22 vdir = tbn_mat * -vpos;
nuclear@3	23 vnorm = n;
nuclear@3	24
nuclear@4	25 gl_TexCoord[0] = gl_TextureMatrix[0] * gl_MultiTexCoord0;
nuclear@3	26 }