dbf-udg
annotate sdr/phong.p.glsl @ 7:603656331514
phong blobs
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Mon, 18 Feb 2013 05:44:17 +0200 |
| parents | |
| children | f0a47f46ee45 |
| rev | line source |
|---|---|
| nuclear@7 | 1 varying vec3 normal, vpos; |
| nuclear@7 | 2 |
| nuclear@7 | 3 void main() |
| nuclear@7 | 4 { |
| nuclear@7 | 5 vec3 n = normalize(normal); |
| nuclear@7 | 6 vec3 v = -normalize(vpos); |
| nuclear@7 | 7 vec3 l = normalize(gl_LightSource[0].position.xyz); |
| nuclear@7 | 8 |
| nuclear@7 | 9 vec3 h = normalize(v + l); |
| nuclear@7 | 10 |
| nuclear@7 | 11 float ndotl = max(dot(n, l), 0.0); |
| nuclear@7 | 12 float ndoth = max(dot(n, h), 0.0); |
| nuclear@7 | 13 float spec = pow(ndoth, gl_FrontMaterial.shininess); |
| nuclear@7 | 14 |
| nuclear@7 | 15 vec3 acol = gl_FrontMaterial.ambient.xyz * gl_LightModel.ambient.xyz; |
| nuclear@7 | 16 vec3 dcol = gl_FrontMaterial.diffuse.xyz * gl_LightSource[0].diffuse.xyz; |
| nuclear@7 | 17 vec3 scol = gl_FrontMaterial.specular.xyz * gl_LightSource[0].specular.xyz; |
| nuclear@7 | 18 |
| nuclear@7 | 19 gl_FragColor.xyz = acol + dcol * ndotl + scol * spec; |
| nuclear@7 | 20 gl_FragColor.w = 1.0; |
| nuclear@7 | 21 } |