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Report the MacBookPro16,1 GPU name for Riot on AMD and Intel hosts

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With DARLING_METAL_MAC_GPU_NAME=1, MTLDevice.name is the GPU the
MacBookPro16,1 that IOKit reports shipped with, from the host's vendor:
"AMD Radeon Pro 5500M" (vendor 0x1002) or "Intel UHD Graphics 630"
(0x8086). NVIDIA keeps its own name so the game never takes another
vendor's driver paths. recommendedMaxWorkingSetSize and every other value
stay the host's, which was the risky part of #61's identity.

The Riot launcher turns it on by default (0 or empty turns it off); other
Darling apps keep the host name. DARLING_METAL_GPU_NAME still wins.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
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lucannez64andClaude Opus 5.5 committed 2026-10-18 17:24:49 +02:00
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commit 59327fa9f0
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docs/TROUBLESHOOTING.md
+7
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@@ -387,6 +387,13 @@ Both can be overridden per launch:
DARLING_METAL_GPU_NAME='AMD Radeon Pro 5500M' DARLING_METAL_VRAM_MB=4096 ./scripts/run.sh
```
The Riot launcher sets `DARLING_METAL_MAC_GPU_NAME=1`: the name becomes the GPU that
the MacBookPro16,1 IOKit reports shipped with, from the host's vendor: `AMD Radeon Pro 5500M`
on AMD and `Intel UHD Graphics 630` on Intel. NVIDIA GPUs keep their own name, so the game
never takes AMD or Intel driver paths on an NVIDIA card. The working set is still the host's.
`DARLING_METAL_MAC_GPU_NAME=0 ./scripts/run.sh` reports the host name instead; other Darling
apps report it unless they set the variable. `DARLING_METAL_GPU_NAME` wins over both.
`registryID` is a fixed non-zero value, as on a real Mac.
### Host-side checks