 attribute vec4 position;
 attribute vec4 inputTextureCoordinate;
 varying vec2 textureCoordinate;

 attribute vec4 inputTextureCoordinate2;
 varying vec2 textureCoordinate2;

 attribute vec4 inputTextureCoordinate3;
 varying vec2 textureCoordinate3;

 void main(void) {
     gl_Position = position;
     textureCoordinate = inputTextureCoordinate.xy;
     textureCoordinate2 = inputTextureCoordinate2.xy;
     textureCoordinate3 = inputTextureCoordinate3.xy;
 }