tavli: sdr/phong-notex.p.glsl annotate

tavli

slot bounds, and ray testing

author	John Tsiombikas <nuclear@member.fsf.org>
date	Thu, 02 Jul 2015 00:01:39 +0300
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rev	line source
nuclear@15	1 /* vi: set ft=glsl */
nuclear@15	2 varying vec3 vdir, ldir, normal;
nuclear@15	3
nuclear@15	4 #define KD gl_FrontMaterial.diffuse.rgb
nuclear@15	5 #define KS gl_FrontMaterial.specular.rgb
nuclear@15	6 #define SPOW gl_FrontMaterial.shininess
nuclear@15	7
nuclear@15	8 void main()
nuclear@15	9 {
nuclear@15	10 vec3 n = normalize(normal);
nuclear@15	11 vec3 v = normalize(vdir);
nuclear@15	12 vec3 l = normalize(ldir);
nuclear@15	13 vec3 h = normalize(l + v);
nuclear@15	14
nuclear@15	15 float ndotl = max(dot(n, l), 0.0);
nuclear@15	16 float ndoth = max(dot(n, h), 0.0);
nuclear@15	17
nuclear@15	18 vec3 diffuse = KD * gl_LightSource[0].diffuse.rgb * ndotl;
nuclear@15	19 vec3 specular = KS * gl_LightSource[0].specular.rgb * pow(ndoth, SPOW);
nuclear@15	20
nuclear@15	21 vec3 ambient = gl_LightModel.ambient.rgb * KD;
nuclear@15	22 gl_FragColor.rgb = ambient + diffuse + specular;
nuclear@15	23 gl_FragColor.a = gl_FrontMaterial.diffuse.a;
nuclear@15	24 }