progs/glsl/CH11-toyball.vert

   1 //
   2 // Fragment shader for procedurally generated toy ball
   3 //
   4 // Author: Bill Licea-Kane
   5 //
   6 // Copyright (c) 2002-2003 ATI Research
   7 //
   8 // See ATI-License.txt for license information
   9 //
  10
  11 varying vec4 ECposition;   // surface position in eye coordinates
  12 varying vec4 ECballCenter; // ball center in eye coordinates
  13 uniform vec4 BallCenter;   // ball center in modelling coordinates
  14
  15 void main()
  16 {
  17 //orig:    ECposition   = gl_ModelViewMatrix * gl_Vertex;
  18
  19     ECposition = gl_TextureMatrix[0] * gl_Vertex;
  20     ECposition = gl_ModelViewMatrix * ECposition;
  21
  22     ECballCenter = gl_ModelViewMatrix * BallCenter;
  23     gl_Position  = ftransform();
  24 }