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 the drm platform did not verify whether creating and mapping a DrmBuffer for a cursor works. This could result in a crash in the worst case. This change verfies whether mapping the two cursor buffers works, if not software cursor is enabled. The code is adjusted to ensure that none of the cursor buffers is accessed in case software cursor are enabled. Please note that right now the drm platform's rendering does not support software cursors. Thus currently this change results in no cursor at all. This will be addressed by following patches. BUG: 364740 FIXED-IN: 5.7 TEST PLAN Verfied that it properly falls back to software cursor, but could not verify that the crash is actually fixed. REPOSITORY rKWIN KWin BRANCH drm-software-cursor-5.7 REVISION DETAIL https://phabricator.kde.org/D2026 AFFECTED FILES plugins/platforms/drm/drm_backend.cpp EMAIL PREFERENCES https://phabricator.kde.org/settings/panel/emailpreferences/ To: graesslin, #kwin, #plasma_on_wayland Cc: plasma-devel, kwin, hardening, jensreuterberg, sebas
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