volmetrics

view data/shaders/vol.v.glsl @ 25:4b6c952a83bd

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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
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1 #version 120
2
3 varying vec3 pt;
4
5 void main()
6 {
7 mat4 mvbb = gl_ModelViewMatrix;
8
9 mvbb[0][0] = mvbb[1][1] = mvbb[2][2] = 1.0;
10 mvbb[0][1] = mvbb[0][2] = mvbb[1][2] = 0.0;
11 mvbb[1][0] = mvbb[2][0] = mvbb[2][1] = 0.0;
12
13 gl_Position = gl_ProjectionMatrix * mvbb * gl_Vertex;
14
15 pt = (transpose(gl_NormalMatrix) * gl_Vertex.xyz) * 0.5 + 0.5;
16 }