#wayland on 2024-12-18 — irc logs at oftc.irclog.whitequark.org

2024-07-16 04:52 ChanServ changed the topic of #wayland to: https://wayland.freedesktop.org | Discussion about the Wayland protocol and its implementations, plus libinput

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08:38 <wlb> weston Merge request !1664 opened by () libweston: fix crash when a client binds to a destroyed output https://gitlab.freedesktop.org/wayland/weston/-/merge_requests/1664

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14:21 <MrCooper> ofourdan: re https://gitlab.freedesktop.org/xorg/xserver/-/issues/1773, Xwayland doesn't strictly need to create a separate wl_buffer for each X cursor image, does it? E.g. it could create the wl_buffers on demand and maybe keep around a pool of them for re-use

14:22 <ofourdan> not sure how that would help with the issue at stake though?

14:22 <wlb> weston Issue #982 closed \o/ (Is there an easy way to support specific vendor formats in weston? https://gitlab.freedesktop.org/wayland/weston/-/issues/982)

14:23 <ofourdan> if the X11 client keeps creating new cursors

14:23 <MrCooper> it wouldn't exhaust the SHM pool

14:24 <MrCooper> and wouldn't create 10s of thousands of wl_buffers which are never attached to a surface

14:27 <wlb> weston Issue #981 closed \o/ (weston keyboard not working with firefox https://gitlab.freedesktop.org/wayland/weston/-/issues/981)

14:28 <MrCooper> by "create on demand" I mean create a wl_buffer, copy the cursor image contents to it, attach it to the cursor surface, then either destroy it again or keep it in a pool for future usage; not keeping around separate wl_buffers per cursor image

14:28 <ofourdan> MrCooper: the problem is more with shm pixmaps though, the cursor code iteslf doesn't use shm pools, it just happens to use specifically shm pixmaps which do

14:30 <MrCooper> the same issue could happen if a client leaks SHM pixmaps, sure, doesn't mean we can't do something about cursors

14:30 <ofourdan> that means changing the cursor code to not use the shm pixmaps, basically.

14:31 <MrCooper> I guess so

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14:49 <ofourdan> or maybe not…

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15:20 <ofourdan> there could be a very simple fix actually, using the shm pixmap the same, but just not keeping the pixmap around

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15:33 <ofourdan> there → https://gitlab.freedesktop.org/xorg/xserver/-/merge_requests/1754

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15:52 <ofourdan> it works

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15:52 <ofourdan> more than 5000 xcursors created by teh client and counting, only one shared memory pool

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17:00 <bl4ckb0ne> amending protocols (bump version) require the same number of ACK as introducing a new protocol right? only the minimum discussion period time is not required

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