Compatibility Report

• Prismata
• https://store.steampowered.com/app/490220/Prismata/

System Information

• GPU: NVIDIA Quadro K2100M
• Driver/LLVM version: Mesa 18.2.4 + LLVM 7.0.0-r1 + NVIDIA 410.73
• Kernel version: 4.14.78-gentoo
• https://gist.github.com/jaccarmac/2e7a00e026b9a4adf49efca1e308ca03#file-system-info-txt
• Proton version: 3.7-8

I confirm:

• [x] that I haven't found an existing compatibility report for this game.
• [x] that I have checked whether there are updates for my system available.

https://gist.github.com/jaccarmac/2e7a00e026b9a4adf49efca1e308ca03#file-steam-490220-log

Symptoms

• When launched in fullscreen, loading bar visibly reaches about 20% then the game becomes completely blank and blue. There is still sound and F11 successfully minimizes the blue window, but I am unable to interact with Prismata beyond that. Launching in windowed mode solves this problem.
• Hardware acceleration is disabled per a warning displayed on the front page after login. I suspect the problem lies with Flash and not my machine as hardware acceleration works for me for other Proton games.

Reproduction

1. Launch Prismata.
2. Hit F11 to force windowed mode.
3. Manually close Prismata.
4. Launch Prismata again.
5. Log in.