gbm/dri: Check dri extension version before flush after unmap

The commit mentioned below required the __DRI2FlushExtension to have
version 4 or above, for GBM functionality. That broke GBM with some
classic dri drivers. Relax that requirement so that we only flush
after unmap if we have version 4 or above. Drivers that require the flush
for correct functionality should implement the desired version.

Fixes: ba8df228 ("gbm/dri: Flush after unmap")
Cc: <[email protected]>
Signed-off-by: Thomas Hellstrom <[email protected]>
Reviewed-by: Emil Velikov <[email protected]>
Tested-by: Dylan Baker <[email protected]>

0 files changed, 0 insertions, 0 deletions