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Laszlo Agocs 6dd09664b2 rhi: d3d: Fix up non-vsynced presentation
Doing Present(0, 0) is not necessarily sufficient to get rid of
blocking. It may very well start blocking after a few frames.

This does not apply to a non-flip-discard swapchain (when running
with QT_D3D_NO_FLIP=1), but for flip-discard we should also try using
DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING and DXGI_PRESENT_ALLOW_TEARING in
case a swap interval of 0 is wanted.

Pick-to: 6.3
Fixes: QTBUG-99949
Change-Id: I9cb13b139ba04e41b4f25b94bcd3d1e973496414
Reviewed-by: Andy Nichols <andy.nichols@qt.io>
2022-01-19 15:19:38 +01:00
.github/workflows Repair github action workflow 2021-11-10 18:57:33 +01:00
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src rhi: d3d: Fix up non-vsynced presentation 2022-01-19 15:19:38 +01:00
tests Win32: always allow the event loop to be woken up by posted events 2022-01-19 14:22:52 +01:00
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