Severe graphical glitches in Valkyrie Initiative's renpy port

[DCNick3]

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Affected Build(s)

Master build, commit d1e0039bc

Description of Issue

Several games that are using Valkyrie Initiative's renpy port have severe graphical glitches & flickering. I have tested CEIBA (0100E8801D97E000), Wet Steps (0100B5001D0E6000) and The Sin (01009F201BB50000). CEIBA seems to be affected the most, as it is using a ton of animations. The Sin is mostly playable except minor glitches at transitions.

This seems to happen both on Vulkan and OpenGL backends and with the AMD integrated and NVIDIA discrete card I have (most of the testing done on integrated AMD though). Vulkan software rendering with lvmpipe gives the same results also.

CEIBA main menu:

CEIBA in-game:

Wet Steps in-game:

The Sin in-game (only transitions are glitched): the_sin_glitches.webm

Expected Behavior

No graphical glitches in the game

Reproduction Steps

1. Run any of the affected games
2. Start a new game
3. Look at the glitches

Log File

CEIBA log with OpenGL: yuzu_log.txt (this unimplemented assert is triggered) CEIBA log with Vulkan: yuzu_log.txt

System Configuration

CPU: AMD Ryzen 7 5800H GPU/Driver: AMD ATI Radeon Vega Series / Radeon Vega Mobile Series, open-source drivers GPU/Driver: AMD ATI Radeon Vega Series / Radeon Vega Mobile Series, open-source drivers RAM: 64 GiB OS: Arch Linux