vert.glsl

   1 uniform mat4 transform;
   2 attribute vec4 vertex;
   3 attribute vec4 color;
   4 varying vec4 vertColor;
   5 attribute float pointsize;
   6 void main() {
   7   gl_Position = transform * vertex;
   8   vertColor = color;
   9   gl_PointSize = 100.0;
  10 }
  11