[Runtime Bug]: Recent commit causes light artifacting when using rayportals

[xoxor4d]

Describe the bug

Using runtime builds after commit: Ray tMax NaN Fix and having a rayportal pair in the scene results in:

2024-11-29.14-25-51.mp4

Unchecking either Temporal Reuse or Spatial Reuse "fixes" it. Setting ReSTIR GI Spatial Bias Correction to anything but Pairwise Raytrace does as well.

How do you reproduce the bug?

• Grab the Portal 2 Compatibility mod from: https://github.com/xoxor4d/p2-rtx
• Use any runtime build that includes the mentioned commit
• Use the in-game console: map sp_a4_tb_intro and place a portal pair in the first room like shown in the video

Version

latest

[anon-apple]

Does this bug actually occur in the unmodified Remix runtime? I just ask as you have changed various bits of the shaders in the runtime this Portal 2 compatibility mod, and those very well could be causing these issues (e.g. changing the number of supported ray portals, as this has implications for RTXDI and etc).

[xoxor4d]

@anon-apple Sorry I could have sworn I wrote that it happens on an unmodified runtime build. I've tried with a clean runtime build with no chances from my side. Once with the mentioned commit and once without it

[NV-LL]

Thanks for reaching out @xoxor4d! We've opened REMIX-3825 for internal tracking.