Proton VS MotherVR

Or Valve's Proton[0], a tool for playing Windows games on Linux.

https://github.com/ValveSoftware/Proton

Did you mount it with the correct flags?

there is a hack to try and use your existing windows game install from an NTFS drive, but i don't recommend it as steam will try to save file names that are not allowed on NTFS...plus ext4 is faster.

From a quick search, here's what I found. It looks like you're encountering some common issues that can occur with games running on Linux through Proton, especially with the recent updates to games like Satisfactory that might affect compatibility. The log entries you're seeing related to D3DCompile2 failing to compile shader and the issues with Ternary operator and LinearToSrgbBranching not being defined, suggest that there's a problem with shader compilation. This can often be related to the version of Proton or the graphics drivers you are using. Some users have reported that the game does launch with the -vulkan option but with graphical glitches and lower performance, which indicates that the Vulkan renderer is working but possibly not optimally on your setup. From the discussions in the community, users have suggested ensuring that the latest drivers for your graphics card are installed and, if using an Intel GPU, that the Mesa drivers are up to date since Intel XeSS references were found in the logs. If you're using NVIDIA graphics, make sure you have the latest drivers and possibly set the PROTON_ENABLE_NVAPI=1 %command% to enable DLSS if you're under Vulkan. If you're using an Optimus laptop with both Intel and NVIDIA GPUs, make sure your Optimus setup is correctly configured. Some users have found success by specifying DXVK_FILTER_DEVICE_NAMES=GeForce to force the game to use the NVIDIA GPU. It's also worth noting that if you're encountering issues with DirectX 11, you might want to try forcing the game to use DirectX 10 if possible or look into DXVK configurations that could resolve compatibility issues. Lastly, if none of these solutions work, you could try running a trace with apitrace to gather more detailed logs that might point to the specific issue. If you're still stuck, it would be a good idea to report the issue to the Proton GitHub page or seek further assistance in the game's community forums where others might have encountered and solved similar issues. For more information and to find others who might have resolved similar issues, check out the community discussions on GitHub​​, Steam Community​​, and the DXVK GitHub page​​.

This has been reported to the proton team here : https://github.com/ValveSoftware/Proton/issues/7317

Modders picked it up and released it: https://github.com/Nibre/MotherVR

There is a VR mod that exists for it, MotherVR. It's fantastic and plays as well as many native VR releases. Warning though; You will actually shit yourself.

Alien Isolation with the MotherVR mod might surprise you with how great it looks in VR, despite how old it is. It's an extremely tense game and its reputation as such is completely earned. It goes on sale for super cheap frequently and has even been given away once or twice on Epic Games store. It's not perfect but still absolutely worth checking out, esp. if you get it on sale.

Played through this game for the first time this year. In VR! If you enjoy giving yourself PTSD, I highly recommend it. https://github.com/Nibre/MotherVR/releases

This game requires the MotherVR mod to play in VR. You can download the mod here and follow instructions for installing.

The MotherVR mod for Alien Isolation doesn't work as-is on Windows 11 without some odd library or symlink workaround: https://github.com/Nibre/MotherVR/issues/229

This game requires the MotherVR mod to have VR support.