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...).
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.
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