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venus: emulate a second graphics queue on Android

Yiwei Zhang requested to merge zzyiwei/mesa:vn-second-queue into main

What does this MR do and why?

venus: emulate a second graphics queue on Android

Starting from Android 14 (Android U), framework HWUI has required a
second graphics queue to avoid racing between webview and skiavk. For
non-Android, we leave the second queue emulation behind a debug option.

Signed-off-by: Yiwei Zhang <zzyiwei@chromium.org>

Test:

  • recent Android HWUI skiavk backend runs normally with venus
  • dEQP-VK.synchronization*multi_queue*

/cc @ryanneph @justonli

Edited by Yiwei Zhang

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