Bad RHW value causes graphics errors on Intel GPUs

[Richard-L]

See the white flickers in "User Keys", und "Back", and the "TR" missing in the bottom right version print.

Recording.2024-09-09.220242.mp4

[Richard-L]

Actually I may have only noticed it in the controls menu. On a fresh start game start without any key conflicts, it also seems to do it just on the passport:

Recording.2024-09-09.221343.mp4

[Richard-L]

Okay, sorry to make a bit of a mess of this issue.... but this happens once the demo starts playing 😅

Recording.2024-09-09.221621_edit.mp4

Once it finishes the screen stays black. The main menu doesn't seem to reappear.

[walkawayy]

@Richard-L try this build and lmk if it fixes your issue

laptop_v1 TR2X-0.2-432-gfc79d77-dirty-Windows.zip

[Richard-L]

@walkawayy No difference with your build sadly.

[walkawayy]

I think this is caused by a bad reciprocal of homogenous w (RHW) value in Output_CalcRoomVertices.

[walkawayy]

Can you try this one? @Richard-L

intel_v2 TR2X-0.2-439-gb708ab6-dirty-Windows.zip

[Richard-L]

Can you try this one? @Richard-L

intel_v2 TR2X-0.2-439-gb708ab6-dirty-Windows.zip

With this one the flickering in the Main Menu remains, but the demo is black. I can hear the SFX of it running though.

[walkawayy]

Can you try this one? @Richard-L
intel_v2 TR2X-0.2-439-gb708ab6-dirty-Windows.zip

With this one the flickering in the Main Menu remains, but the demo is black. I can hear the SFX of it running though.

Can you start a new game and play The Great Wall and report what happens? And/or Lara's Home? I would be interested in normal gameplay not just demo. Also what level files are you using? Are they some super rare old files?

[Richard-L]

Curiosly it's reproducing the same error now, whearas the demo just seems to stay black.

Recording.2024-09-10.232655.mp4

[rr-]

@Richard-L can you try the dev snapshot from #1844 and let me know if it fixes this issue?

[Richard-L]

Didn't find any build in your link but found this #2010 (comment) and it works beautifully ❤️
More details on discord.

[rr-]

Since #1844 got merged, we can close this.