vertexAttribPointer method
      
void
vertexAttribPointer()
      
     
    
    
Implementation
void vertexAttribPointer(int index, int size, int type, bool normalized, int stride, int offset, bool integer) {
  if (integer){
    gl.vertexAttribIPointer(index, size, type, stride, offset);
  } else {
    gl.vertexAttribPointer(index, size, type, normalized, stride, offset);
  }
}