metasurf
annotate examples/volume/sdr/frag.glsl @ 4:2c575855f707
added simple example
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Tue, 25 Oct 2011 23:21:32 +0300 |
| parents | |
| children |
| rev | line source |
|---|---|
| nuclear@3 | 1 varying vec3 vpos, ldir, norm; |
| nuclear@3 | 2 |
| nuclear@3 | 3 void main() |
| nuclear@3 | 4 { |
| nuclear@3 | 5 vec3 n = normalize(norm); |
| nuclear@3 | 6 vec3 l = normalize(ldir); |
| nuclear@3 | 7 vec3 v = -normalize(vpos); |
| nuclear@3 | 8 vec3 h = normalize(v + l); |
| nuclear@3 | 9 |
| nuclear@3 | 10 const vec3 kd = vec3(0.87, 0.82, 0.74); |
| nuclear@3 | 11 |
| nuclear@3 | 12 float diff = abs(dot(n, l)); |
| nuclear@3 | 13 float spec = pow(abs(dot(n, h)), 60.0); |
| nuclear@3 | 14 |
| nuclear@3 | 15 vec3 dcol = kd * diff; |
| nuclear@3 | 16 vec3 scol = vec3(0.8, 0.8, 0.8) * spec; |
| nuclear@3 | 17 |
| nuclear@3 | 18 gl_FragColor = vec4(dcol + scol, 1.0); |
| nuclear@3 | 19 } |