public override void Execute( SceneManager sm, RenderSystem rs )
		{
			rs.ClearFrameBuffer( this.buffers, this.color, this.depth, (ushort)this.stencil );
		}
 public override void Execute(SceneManager sm, RenderSystem rs)
 {
     rs.ClearFrameBuffer(buffers, color, depth, stencil);
 }