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xwayland: Poll dma-buf fds in xwl_present_pixmap

Closed Michel Dänzer requested to merge daenzer/xserver:xwl_present_dmabuf_ready into master

Wait for all of them to become readable before processing the PresentPixmap request. This corresponds to the GPU drawing to the buffer having completed.

This has various benefits, e.g. the target MSC calculation can be more accurate in some cases.

A potential downside is that it may impact the frame rate of very light clients such as vblank_mode=0 glxgears. Shouldn't affect real-world apps though.

Merge request reports

Merge request pipeline #879585 passed

Merge request pipeline passed for 1b7bd5be

Closed by Michel DänzerMichel Dänzer 1 year ago (Jan 22, 2024 4:51pm UTC)

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