varying vec4 texcoord;
void main ()
{
  gl_Position.zw = (gl_Vertex.xy * 2.0);
  gl_Position.xy = gl_Vertex.xy;
  texcoord.x = gl_Vertex.z;
  texcoord.yz = gl_Vertex.zw;
  texcoord.w = gl_Vertex.x;
}


// stats: 1 alu 0 tex 0 flow
// inputs: 1
//  #0: gl_Vertex (high float) 4x1 [-1] loc 0