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LeandroLP23andClaude Opus 5.5 8c61e533fb docs(agc): record presentation under the GPU mutex on AMD's Windows driver
AMD's Windows driver exposes one graphics queue on a Radeon 860M, so
vkQueuePresentKHR runs on the main queue under GuestMemory::GpuMutex
there, as on RADV. Two Yamagi Quake II traces of 1200 presents each
showed Vulkan.QueuePresent at about 0.3 ms (max 3.5 ms) and no
GpuMutex.wait slice from another thread overlapping it. The entry now
closes once RADV, lavapipe and Intel's Windows driver, the named drivers
still unmeasured, show the same.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
2026-10-26 15:51:30 +01:00
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