Bug 106732 - DRM backend does not buffer support modifiers for composition bypass
Summary: DRM backend does not buffer support modifiers for composition bypass
Status: RESOLVED MOVED
Alias: None
Product: Wayland
Classification: Unclassified
Component: weston (show other bugs)
Version: unspecified
Hardware: Other All
: medium normal
Assignee: Wayland bug list
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Reported: 2018-05-30 14:23 UTC by Eero Tamminen
Modified: 2018-06-08 23:56 UTC (History)
0 users

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Description Eero Tamminen 2018-05-30 14:23:40 UTC
Recent Weston (git) versions composite fullscreen applications.  The gfx stack that I'm using, supports modifiers and atomic mode setting in case that matter.

This didn't happen with last year Weston version (with a gfx stack that didn't yet have support for modifiers or atomic modesetting), so this is a (performance & power usage) regression.

This is on Intel HW (Broxton, Skylake...).
Comment 1 Daniel Stone 2018-05-30 14:33:37 UTC
This is expected; Mesa now uses the dmabuf interface for its buffers (including exotic modifiers), which is supported by the GL renderer, but not by the DRM backend. So we just punt on trying to display it directly.

This is fixed by the backend of the modifier/overlay support series I have and have been trying to rework. It will almost certainly land for the next release, given it largely has positive review.
Comment 2 GitLab Migration User 2018-06-08 23:56:29 UTC
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been closed from further activity.

You can subscribe and participate further through the new bug through this link to our GitLab instance: https://gitlab.freedesktop.org/wayland/weston/issues/113.


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