Details
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Type:
Task
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Status: Closed
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Priority:
P2: Important
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Resolution: Duplicate
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Affects Version/s: None
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Fix Version/s: Some future release
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Component/s: Qt RHI, Quick: SceneGraph
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Labels:None
Description
Physical device (Vulkan terminology) or adapter (D3D/DXGI terminology) selection where applicable: what do we want to support?
- Currently we do have env.vars. like QT_D3D_ADAPTER_INDEX and QT_VK_PHYSICAL_DEVICE_INDEX.
- Should there be something less backend specific and more general? We have to be careful with introducing full-blown adapter enumeration and management APIs, however. Think about what a simple, compact API would look like.
- Metal: do we care about choosing between MTLDevices, or just using the "system default" is enough? (do not have any hardware with multiple GPUs, cannot investigate)
- Do we need to monitor the device list on Metal? Only relevant on macOS with external GPUs (disconnect at runtime - apps relying on that GPU are quit/restarted by default by the OS, I think, perhaps that good enough?) Cannot test, no hardware available.