yea but artifacts… that’s why usually render targets.
Though it’s probably more performant since at a minimum you are looking at double the MS cost to render the scope scene well enough.
IDK. maybe can you specifically run a different anti alias onto the zoomed lense material?
There’s an anitaliased mask node that I never played with before that could become useful for this perhaps…
Takes the route of a render target though, so not sure.
Say you were to save out the lense material to a RT and re-use it in the antialiased texture for instance. ( Draw Material to Render Target)
The cost of that doesn’t involve rendering - but it does write to memory/disk so still not cheap.