Setting backbuffer size

Can someone please explain the difference between setting the backbuffer size on either a renderer or a DX9Texture node connected to that renderer?

Thanks

well any of them will take one that is set manually

if you set the backbuffers size on a renderer it affects both the renderer and a connected dx9texture. if you set it on the dx9texture the renderer is not affected, only the dx9texture.

Thanks for the speedy replies.

Got it.