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| author | Simon Ser <contact@emersion.fr> | 2022-05-27 13:21:55 +0200 |
|---|---|---|
| committer | Simon Ser <contact@emersion.fr> | 2022-06-01 21:16:02 +0200 |
| commit | acc6d94db048118e7e910d7812431dfb27b2d769 (patch) | |
| tree | 3d4c0f20150501c0f741673257887330f0a55a04 /CONTRIBUTING.md | |
| parent | e383c1f1db37c6d2de8f070603a89230f876bc80 (diff) | |
backend/drm: make commits without a buffer blocking
The wlr_output API requires compositors to wait for wlr_output.frame
before submitting a new buffer. However, compositors can perform a
commit which doesn't involve a buffer anytime.
If the commit is a modeset, we set DRM_MODE_ATOMIC_ALLOW_MODESET and
block until the commit is done. If it isn't, we currently always
perform a non-blocking commit. This is an issue because a previous
page-flip might still be in flight kernel-side, returning EBUSY.
Fix this by using blocking commits when a buffer isn't submitted by
the compositor.
Closes: https://github.com/swaywm/sway/issues/6962
References: https://gitlab.freedesktop.org/wlroots/wlroots/-/issues/2239
Diffstat (limited to 'CONTRIBUTING.md')
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