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Wayland GNOME: Fix incorrect window size when in some circumstances when switching between windows with window decorations disabled

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Only call wl_surface_commit() after a resize when the correct size buffer is
attached to the surface. This is ensured by setting a flag on the window that prevents
all surface commits till it is cleared. The flag is cleared at next
eglSwapBuffers().

I dont actually understand if this guarantees that the
buffer size is always correct. For example, if the back buffer is
latched when wl_egl_resize_window() is called, the backbuffer will be
correct only after two swaps (I think). Or maybe the old back buffer is
discarded, I cant find any documentation about it.

All I can say is that doing it this way seems to fix the issue.

Thanks to @jadahl for his help with tracking down the root cause.

Fixes #4802
This commit is contained in:
Kovid Goyal
2022-10-31 21:59:01 +05:30
parent de122ed727
commit 2435a8ccfd
5 changed files with 52 additions and 34 deletions
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docs/changelog.rst
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@@ -48,6 +48,8 @@ Detailed list of changes
- Fix cursor position at x=0 changing to x=1 on resize (:iss:`5635`)
- Wayland GNOME: Fix incorrect window size when in some circumstances when switching between windows with window decorations disabled (:iss:`4802`)
0.26.4 [2022-10-17]
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