1 varying vec3 normal, vpos;

2

3 void main()

4 {

5 vec3 n = normalize(normal);

6 vec3 v = -normalize(vpos);

7 vec3 l = normalize(gl_LightSource[0].position.xyz);

8

9 vec3 h = normalize(v + l);

10

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

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

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

14

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

16 vec3 dcol = gl_FrontMaterial.diffuse.xyz * gl_LightSource[0].diffuse.xyz;

17 vec3 scol = gl_FrontMaterial.specular.xyz * gl_LightSource[0].specular.xyz;

18

19 gl_FragColor.xyz = acol + dcol * ndotl + scol * spec;

20 gl_FragColor.w = 1.0;

21 }