gbm_bo_set_user_data
gbm_bo_get_user_data
gbm_bo_destroy
+gbm_format_get_name
gbm_surface_create
gbm_surface_create_with_modifiers
-gbm_surface_needs_lock_front_buffer
gbm_surface_lock_front_buffer
gbm_surface_release_buffer
gbm_surface_has_free_buffers