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Alex Villacís Lasso c3590cea72 renderer/native: Fallback to non-planar API if gbm_bo_get_handle_for_plane fails

Commit c0d9b08ef9 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

(cherry picked from commit f7af32a3ea)

2019-02-11 13:40:10 -05:00