proton: Populate NVIDIA_WINE_DLL_DIR when available #8087
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Plagman
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NVIDIA-software may check the environment variable `NVIDIA_WINE_DLL_DIR` for a path where DLLs provided by the NVIDIA Linux driver can be found. This needs to be set by `proton` script, as it is ran inside of the pressure-vessel environment, so the paths returned will be valid within the environment. Tested with an application that reads `NVIDIA_WINE_DLL_DIR` from the environment and tries to load a known DLL from it. As expected manually setting the environment variable to the on-disk location did not work, as the path is not accurate within the pressure-vessel environment. #8087
adamdmoss
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Sep 16, 2024
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For what my ex-nvidia-employee opinion is worth: LGTM. I infer from the lack of specifics (and not privileged knowledge) that this is to enable some future tech work, but if there is an existing title which needs this then pointing it out would be good for verification purposes.
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Noting from a side-discussion between myself @ivyl, pgofman, and zf. This environment variable isn't ideal because it creates wine/proton specific behavior. Since the way this would be read on Windows isn't currently supported in Wine, this environment variable will only be read as a fallback. That way, in the future if the primary path is supported, this logic could be removed. In the meantime there's some cleanup things to do here (like avoiding running through the C_DLL logic twice). |
NVIDIA-software may check the environment variable `NVIDIA_WINE_DLL_DIR` for a path where DLLs provided by the NVIDIA Linux driver can be found. This is done as a fallback for when the "DriverStore" cannot be detected via the D3DDDI functions for querying an adapter-specific registry key. Tested with an application that reads `NVIDIA_WINE_DLL_DIR` from the environment and tries to load a known DLL from it. As expected manually setting the environment variable to the on-disk location did not work, as the path is not accurate within the pressure-vessel environment.
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NVIDIA-software may check the environment variable `NVIDIA_WINE_DLL_DIR` for a path where DLLs provided by the NVIDIA Linux driver can be found. This needs to be set by `proton` script, as it is ran inside of the pressure-vessel environment, so the paths returned will be valid within the environment. Tested with an application that reads `NVIDIA_WINE_DLL_DIR` from the environment and tries to load a known DLL from it. As expected manually setting the environment variable to the on-disk location did not work, as the path is not accurate within the pressure-vessel environment. ValveSoftware#8087
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NVIDIA-software may check the environment variable
NVIDIA_WINE_DLL_DIRfor a path where DLLs provided by the NVIDIA Linux driver can be found. This needs to be set byprotonscript, as it is ran inside of the pressure-vessel environment, so the paths returned will be valid within the environment.Tested with an application that reads
NVIDIA_WINE_DLL_DIRfrom the environment and tries to load a known DLL from it. As expected manually setting the environment variable to the on-disk location did not work, as the path is not accurate within the pressure-vessel environment.