glVertexAttribPointer(
		0,                  // index: the index of the attribute to be modified
		1,                  // size: the number of components per attribute
		GL_FLOAT,           // type: the data type of each component
		GL_FALSE,           // normalized: whether or not to normalize data points
		2,                  // stride: the byte offset between attributes
		(void *)0			// pointer: the offset of the first component of the first array attribute
	);