beginCompute( computeGroup ) {

		const { state, gl } = this;

		state.bindFramebuffer( gl.FRAMEBUFFER, null );
		this.initTimestampQuery( computeGroup );

	}
This method is executed at the beginning of a compute call and
prepares the state for upcoming compute tasks.

@param {Node|Array<Node>} computeGroup - The compute node(s).