output: do nothing in output_set_image if backend has no renderer
This is useful when using the noop backend for example.
@@ -722,7 +722,11 @@ bool wlr_output_cursor_set_image(struct wlr_output_cursor *cursor,
int32_t hotspot_x, int32_t hotspot_y) {
struct wlr_renderer *renderer =
wlr_backend_get_renderer(cursor->output->backend);
- assert(renderer);
+ if (!renderer) {
+ // if the backend has no renderer, we can't draw a cursor, but this is
+ // actually okay, for ex. with the noop backend
+ return true;
+ }
output_cursor_reset(cursor);
