volmetrics
annotate data/shaders/vol.v.glsl @ 25:4b6c952a83bd
works
todo:
1- ta quads na nai to res tou volume * 2
2- conservative quad
3- to aspect ratio tou preview
| author | Eleni Maria Stea <elene.mst@gmail.com> |
|---|---|
| date | Sun, 27 Apr 2014 18:13:44 +0300 |
| parents | |
| children |
| rev | line source |
|---|---|
| elene@25 | 1 #version 120 |
| elene@25 | 2 |
| elene@25 | 3 varying vec3 pt; |
| elene@25 | 4 |
| elene@25 | 5 void main() |
| elene@25 | 6 { |
| elene@25 | 7 mat4 mvbb = gl_ModelViewMatrix; |
| elene@25 | 8 |
| elene@25 | 9 mvbb[0][0] = mvbb[1][1] = mvbb[2][2] = 1.0; |
| elene@25 | 10 mvbb[0][1] = mvbb[0][2] = mvbb[1][2] = 0.0; |
| elene@25 | 11 mvbb[1][0] = mvbb[2][0] = mvbb[2][1] = 0.0; |
| elene@25 | 12 |
| elene@25 | 13 gl_Position = gl_ProjectionMatrix * mvbb * gl_Vertex; |
| elene@25 | 14 |
| elene@25 | 15 pt = (transpose(gl_NormalMatrix) * gl_Vertex.xyz) * 0.5 + 0.5; |
| elene@25 | 16 } |