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docs: Update PRIME.

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To reflect the switch to DXVK's DXGI.
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Arkadiusz Hiler 2021-06-22 20:13:18 +03:00 committed by Andrew Eikum
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@ -19,39 +19,46 @@ following resources useful:
* https://wiki.debian.org/NVIDIA%20Optimus
Here, the two most common PRIME scenarios are covered, but the content should
be enough to troubleshoot and make any other configuration work.
## DirectX 9, 10, 11 and 12 (DXVK and VKD3D-Proton)
The implementations of those graphics APIs are built on top of Vulkan and
**most of the games should work out of the box.** Discrete GPUs are
prioritized (i.e. enumerated first) and games should default to them.
If you have multiple discrete GPUs or the wrong GPU is selected as the
default one and the game doesn't have the means of selecting an adapter you
can limit what gets enumerated.
In Steam, set your game's Properties -> GENERAL -> LAUNCH OPTIONS to:
DXVK_FILTER_DEVICE_NAME="GTX 1650" %command%
This should work for GeForce GTX 1650. A different name may be required for
your particular graphics card (e.g. "VEGA10" for Vega 56/64). You can use
`vulkaninfo` program (usually packaged as `vulkan-tools`) to check the names
of your GPUs.
## AMD -> Integrated Intel (Mesa -> Mesa)
## DirectX 8 and OpenGL
Those APIs are implemented on top of OpenGL and require a bit more
configuration.
The two most common PRIME scenarios are covered, but the content should be
enough to troubleshoot and make any other configuration work.
### AMD -> Integrated Intel (Mesa -> Mesa)
In Steam, set your game's Properties -> GENERAL -> LAUNCH OPTIONS to:
DRI_PRIME=1 %command%
That's it. This should be enough to have everything working.
## Nvidia -> Integrated Intel (Nvidia's Proprietary Driver -> Mesa)
### Nvidia -> Integrated Intel (Nvidia's Proprietary Driver -> Mesa)
In Steam set your game's Properties -> GENERAL -> LAUNCH OPTIONS to:
__NV_PRIME_RENDER_OFFLOAD=1 __GLX_VENDOR_LIBRARY_NAME=nvidia %command%
For most games, Nvidia GPUs are reported as AMD GPUs to workaround issues with
NVAPI. This means that DXGI will report your GPU as RX480. Because of that
DXVK/VKD3D won't recognize the vendor/product ids and will pick a GPU on their
own, so you have to add other options to force the correct choice.
DXVK (used for DirectX 9-11 games) takes GPU name so you might have to
prepend the following to 'LAUNCH OPTIONS': `DXVK_FILTER_DEVICE_NAME="GeForce"`.
A different or more specific name may be required (e.g. "Quadro").
VKD3D-Proton (used for DirectX 12 games) takes GPU id as reported by the
`vulkaninfo` program (usually packaged as `vulkan-tools`). In this case you
have to prepend the following to 'LAUNCH OPTIONS': `VKD3D_VULKAN_DEVICE=0`.
Replace `0` with the appropriate GPU id.
# Troubleshooting