[Bug] Possible driver bug in Torna: The Golden Country

[extherian]

Description of the issue

During the game's ending scenes, particularly during the cutscene called "Scream" in the Events Theater, the sky suffers from flickering white flashes sporadically. What is supposed to happen here is that bolts of lighting are supposed to be showing, and this happens properly on a GTX 1050 Ti. However, when the scenes are played on an RTX 4060, the lighting bolts are replaced by white flashes that flicker on and off. There are also issues with what I believe to be z-fighting among the cloud layers.

Notably, this issue does not appear at all in the OpenGL backend, which is why I am so certain that it is a driver issue with the Vulkan implementation. It implies that Vulkan may be more prone to developing issues in the future caused by changes in driver behaviour compared to OpenGL. Unfortunately, without the old contributors, we currently have no way of troubleshooting this issue. If someone skilled joins this project many years from now, please examine this problem.

Reproduction steps

Play the scene "Scream" from the Events Theater, or by defeating the final boss. Observe the way the cloud layer sorting is bugged in the sky, as well as random white flashes where there are supposed to be lightning bolts, on Lovelace GPUs and beyond. Pascal cards still suffer from the cloud layer sorting issue but not the flashes of white flickering. Also tested with different firmware versions, such as 18.1.0 and 19.0.0, which made no difference.

Log file

Ryujinx_r.b4cac89_2024-10-18_18-01-22.log

OS

Windows 11

Ryujinx version (revision hash)

r.b4cac89

Game version

2.1.0

CPU

i5 7600

GPU

GTX 1050 Ti

RAM

16GB DDR4 2400

List of applied mods

None

Additional context?

No response