dispose() {

		this._textureComp.dispose();
		this._textureOld.dispose();

		this.compFsMaterial.dispose();
		this.copyFsMaterial.dispose();

		this._compFsQuad.dispose();
		this._copyFsQuad.dispose();

	}
Frees the GPU-related resources allocated by this instance. Call this
method whenever the pass is no longer used in your app.