I've been playing around with LPVs for dynamic global Illumination for a couple of months now, but I just can't get it to work in a satisfying way. I know it's still an experimental feature, but some people seem to be able to use it and achieve awesome lighting.
The results I get are completely unusable however, regardless of what I set in my post process volume. With the default settings the lighting is very blocky (see 2&3) and it's clearly visible where the LPV ends (see 1). When I increase the size it just bleeds through everything and illuminates way too much.
Is there anything I am missing? Or should I just give it up for now and wait for 2.8? Any help would be appreciated!
asked Apr 01 '15 at 10:40 AM in Rendering
To debug and adjust LPV you would want to use the option in the viewport for Show > Visualize > Light Propagation Volume.
It will look something like this with default settings:
The "blockiness" that you refer to is normal. LPV uses block volumes to calculate and inject light into the scene.
Also, the scene you linked to, is not necessarily a good example since it's using foliage vs block geometry where some of the tweaks would be more noticeable. At the moment I'd say keep on using where possible and have fun with it. Once the new code is integrated there may be a significant improvement or at least more options to tweak for better results. This should hinder from developing other parts of your project in the meantime. ;)
I hope this helps.
answered Apr 01 '15 at 09:32 PM
Tim Hobson ♦♦ STAFF
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