Blocky soft shadow rendering near penumbra potentially with AMD Cards

[yaomon]

Hello, thanks for the wonderful lighting engine. I am having a slight issue.

There seems to be an issue rendering shadows that shows up on one computer but not another. One difference between the two that may affect this may be the difference in graphics cards, Vega 64 vs GTX1080, where the Vega 64 computer shows this issue and the GTX1080 computer does not. It also seems to favor glitchy rendering on the "left" side of the shadow.

Thanks again.

[JujuAdams]

Hiya, this is a known issue with AMD chips but I'm not exactly sure how to solve it right now (and not having an AMD GPU to test on makes things harder on top of that). I'll let you know if I make any breakthroughs.