_useMultisampledExtension( renderTarget ) {

		if ( renderTarget.multiview === true ) {

			return true;

		}

		return renderTarget.samples > 0 && this.extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true && renderTarget._autoAllocateDepthBuffer !== false;

	}
Returns `true` if the `WEBGL_multisampled_render_to_texture` extension
should be used when MSAA is enabled.

@private
@param {RenderTarget} renderTarget - The render target that should be multisampled.
@return {boolean} Whether to use the `WEBGL_multisampled_render_to_texture` extension for MSAA or not.