Realtime GI bakes in 2019.3, but doesn't render

Unity Engine
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1

I’m upgrading my project from 2019.1 to 2019.3, and yes, I know about the Enlighten deprecation/removal as of 2020.1. However, it should still be working under 2019.3 using HDRP 7.

What I’m finding is that the realtime lighting bakes just fine, but I’m not seeing it displayed at all in scenes anymore after updating from 2019.1 to 2019.3. These are scenes where realtime GI has always been working.

After baking, I can see the lightmaps exist:

5830915--618448--upload_2020-5-11_0-11-17.png
5830915--618448--upload_2020-5-11_0-11-17.png397×619 57.7 KB

However, I don’t see any contribution to the renderers themselves.

Here’s my lighting tab:

5830915--618451--upload_2020-5-11_0-12-14.png
5830915--618451--upload_2020-5-11_0-12-14.png547×976 61.6 KB

Is there something extra I need to adjust in order to see the lighting now? I’ve already done the usual stuff, like rebaking, clearing the GI cache, and restarting Unity. Thanks.

2

I think I’ve resolved this. It seems that between HDRP 5 and HDRP 7, some changes were made to the indirect contribution of lights. Under HDRP 5, I’d needed to set all lights to have an Indirect Multiplier fairly low, to avoid blowing out the scene lighting. It seems all I needed to do was restore the multiplier to around 1 to get correct lighting again. I don’t know what changed between versions, and it’s always possible I was just consistently doing something wrong under HDRP 5 with respect to lighting.

Anyway, the lesson is, under HDRP 7, it seems that indirect lighting multipliers at/near 1 work just fine.