[Differential] [Request, 3 lines] D2583: DiscardWindowPixmap when Surface size changes

[graesslin (Martin Gräßlin)]

graesslin created this revision.
graesslin added reviewers: KWin, Plasma on Wayland.
Restricted Application added subscribers: kwin, plasma-devel.
Restricted Application added projects: Plasma on Wayland, KWin.

REVISION SUMMARY
  So far this connect was only in ShellClient, but it's needed for all
  Toplevels. Also when a XWayland window has it's surface size changed,
  the pixmap needs to be discarded. Otherwise KWin might hit an assert
  in AbstractEGLTexture due to the buffer having a different size than
  the texture had previously.

TEST PLAN
  Firefox, click download on bugreports.qt.io used to trigger
  this for me. With this change no longer able to reproduce.

REPOSITORY
  rKWIN KWin

BRANCH
  discard-window-pixmap-surface-size-changed

REVISION DETAIL
  https://phabricator.kde.org/D2583

AFFECTED FILES
  shell_client.cpp
  toplevel.cpp

EMAIL PREFERENCES
  https://phabricator.kde.org/settings/panel/emailpreferences/

To: graesslin, #kwin, #plasma_on_wayland
Cc: plasma-devel, kwin, lesliezhai, ali-mohamed, hardening, jensreuterberg, abetts, sebas
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