Superposition Benchmark - Shadows broken on shaders "High" or lower.

[Iglu47]

Shadows break when shader quality is set to "High", "Medium" or "Low". On "Extreme" or higher - all fine. (so presets "1080p High", "1080p Medium", "720p Low" are enough to reproduce the problem)

screenshots of the problem

How it looks on dxvk: How it looks on d3d11 native:

Highly probably NVIDIA specific issue.

Software information

Unigine Superposition v1.1 (https://benchmark.unigine.com/superposition) Shaders quality "High" or lower (on "Extreme" or higher - all fine)

System information

• GPU: NVIDIA GeForce GTX 1080 Ti (Pascal)
• Driver: 530.41.03 (Linux) / 531.68 (Windows 10)
• Wine version: proton-8.0-2c / Windows 10 22H2
• DXVK version: 2.1

Apitrace file

• https://drive.google.com/file/d/1Mchxf-w_0AvOBiIEa3KyAHNjwbsgZu2T/view?usp=share_link

*internal monitoring was flickering already during apitrace capture

Proton log file

• steam-superposition.log

[Iglu47]

This is also can be reproduced with dxvk legacy, so I checked some versions of NVIDIA drivers and I got the following result:

• 530.41.03 - broken shadows
• 525.116.03 - broken shadows
• 515.105.01, 515.86.01, 515.57, 515.48.07 - broken shadows
• 510.108.03 - shadows looks fine
• 470.182.03 - shadows looks fine

Unfortunately, the problem occurs somewhere between the 510.x and 515.x branches (I can't seem to be more precise).

upd. I did more tests for a more accurate result - information has been updated

The initially described issue is not present on DXVK with NVIDIA 470.182.03 and 510.108.03 drivers.

screenshots

proton8 on 510.108.03: dxvk legacy on 470.182.03:

[Blisto91]

Noting that i reproduce on my RTX 4080 with 550.40.61 and dxvk master