Bug 106732

Summary:	DRM backend does not buffer support modifiers for composition bypass
Product:	Wayland	Reporter:	Eero Tamminen <eero.t.tamminen>
Component:	weston	Assignee:	Wayland bug list <wayland-bugs>
Status:	RESOLVED MOVED	QA Contact:
Severity:	normal
Priority:	medium
Version:	unspecified
Hardware:	Other
OS:	All
Whiteboard:
i915 platform:		i915 features:

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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