IR clipping for isolated preview with correct lighting

[lupaz]

In archviz scenes can get heavy to the point that IR becomes too slow unless you isolate objects.
The problem with that is that you're viewing the objects with the wrong lighting.

For example, if you're working on an exterior scene surrounded by mountains, and you isolate the object, the sun that was hidden behind the mountains now hits your objects. This forces you to change the exposure all the time (unless you also select the mountains with your objects, not practical though).

It would be nice to have a corona isolation mode which would be a "sphere" that acts as a region of interest for the calculations.
Actually two spheres, one inside the other. Anything in between the spheres would not be considered in the calculations, and only anything inside the smaller sphere would be shown as rendered pixels.

The input would be 2 dimensions for the radiuses.

Thanks.

[maru]

I don't think this would be ever possible. If you would like to calculate lighting/shadows from the surrounding objects, but make those objects invisible, the speed up would be probably marginal.
Also, you can use region rendering right now to get a similar result.

[lupaz]

What I meant is basically the same as Render Selected but without considering the not selected objects, except for those outside a radius.

Render region could be too slow if there's too much going on inside the region.

Like the image attached.

Anyway. Just an idea.
Thanks.