Very noisy renders

[B.Y.O.B.]

Unfortunately in Blender it is very expensive to update the rendered image during the final render.
I fear we can't change that. We can investigate again of course, but I doubt we can do anything about it.

So the value has this minimum to prevent users from spending a lot of CPU time on framebuffer updates. It is probably even too low.

[kintuX]

Added support for these filters (note that Mitchell is MITCHELL_SS behind the scenes).
I don't think anyone will ever want to use a box filter - is that correct?

... now that you've mentioned it...



TYVM