f7af32a3ea
Commit c0d9b08ef9bf2be865aad9bf1bc74ba24c655d9f replaced the old GBM API calls with the multi-plane GBM API. However, the call to gbm_bo_get_handle_for_plane fails for some DRI drivers (in particular i915). Due to missing error checks, the subsequent call to drmModeAddFB[2] fails and the screen output locks up. This commit adds the missing error checks and falls back to the old GBM API (non-planar) if necessary. v5: test success of gbm_bo_get_handle_for_plane instead of errno This commit adopts solution proposed by Daniel van Vugt to check the return value of gbm_bo_get_handle_for_plane on plane 0 and fall back to old non-planar method if the call fails. This removes the errno check (for ENOSYS) that could abort if mesa ever sets a different value. Related to: https://gitlab.gnome.org/GNOME/mutter/issues/127
Mutter
Mutter is a Wayland display server and X11 window manager and compositor library.
When used as a Wayland display server, it runs on top of KMS and libinput. It implements the compositor side of the Wayland core protocol as well as various protocol extensions. It also has functionality related to running X11 applications using Xwayland.
When used on top of Xorg it acts as a X11 window manager and compositing manager.
It contains functionality related to, among other things, window management, window compositing, focus tracking, workspace management, keybindings and monitor configuration.
Internally it uses a fork of Cogl, a hardware acceleration abstraction library used to simplify usage of OpenGL pipelines, as well as a fork af Clutter, a scene graph and user interface toolkit.
Mutter is used by GNOME Shell, the GNOME core user interface. It can also be run standalone, using the command "mutter", but just running plain mutter is only intended for debugging purposes.
License
Mutter is distributed under the terms of the GNU General Public License, version 2 or later. See the COPYING file for detalis.