dri: Add a flushSwapBuffers method to the image loader extension

This method may be used by dri drivers to make sure all outstanding
buffer swaps have been flushed to hardware.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Sinclair Yeh <syeh@vmware.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>
1 file changed