1 varying vec3 vpos, norm, ldir;

2

3 void main()

4 {

5 vec3 v = -normalize(vpos);

6 vec3 n = normalize(norm);

7 vec3 l = normalize(ldir);

8 vec3 h = normalize(v + l);

9

10 float ndotl = max(dot(n, l), 0.0);

11 float ndoth = max(dot(n, h), 0.0);

12

13 vec3 diff = gl_FrontMaterial.diffuse.rgb * gl_LightSource[0].diffuse.rgb * ndotl;

14 vec3 spec = gl_FrontMaterial.specular.rgb * gl_LightSource[0].specular.rgb *

15 pow(ndoth, gl_FrontMaterial.shininess);

16

17 gl_FragColor.rgb = diff + spec;

18 gl_FragColor.a = 1.0;

19 }