1 varying vec3 normal, vpos;

2

3 void main()

4 {

5 vec3 n = normalize(normal);

6 vec3 v = -normalize(vpos);

7

8 vec3 color = vec3(0.0, 0.0, 0.0);

9

10 for(int i=0; i<2; i++) {

11 vec3 l = normalize(gl_LightSource[i].position.xyz);

12 vec3 h = normalize(v + l);

13

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

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

16 float spec = pow(ndoth, gl_FrontMaterial.shininess);

17

18 vec3 dcol = gl_FrontMaterial.diffuse.xyz * gl_LightSource[i].diffuse.xyz;

19 vec3 scol = gl_FrontMaterial.specular.xyz * gl_LightSource[i].diffuse.xyz;

20

21 color += dcol * ndotl + scol * spec;

22 }

23

24 vec3 acol = gl_FrontMaterial.ambient.xyz * gl_LightModel.ambient.xyz;

25

26 gl_FragColor.xyz = acol + color;

27 gl_FragColor.w = 1.0;

28 }