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backend/multi: disallow multiple renderers at the same time
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parent
a1631dd9ee
commit
52bd8aa716
2 changed files with 16 additions and 6 deletions
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@ -130,20 +130,29 @@ static struct subbackend_state *multi_backend_get_subbackend(struct wlr_multi_ba
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return NULL;
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}
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void wlr_multi_backend_add(struct wlr_backend *_multi,
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bool wlr_multi_backend_add(struct wlr_backend *_multi,
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struct wlr_backend *backend) {
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assert(wlr_backend_is_multi(_multi));
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struct wlr_multi_backend *multi = (struct wlr_multi_backend *)_multi;
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if (multi_backend_get_subbackend(multi, backend)) {
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// already added
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return;
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return true;
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}
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struct subbackend_state *sub;
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if (!(sub = calloc(1, sizeof(struct subbackend_state)))) {
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struct wlr_renderer *multi_renderer =
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multi_backend_get_renderer(&multi->backend);
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struct wlr_renderer *backend_renderer = wlr_backend_get_renderer(backend);
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if (multi_renderer != NULL && backend_renderer != NULL) {
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wlr_log(L_ERROR, "Could not add backend: multiple renderers at the "
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"same time aren't supported");
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return false;
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}
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struct subbackend_state *sub = calloc(1, sizeof(struct subbackend_state));
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if (sub == NULL) {
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wlr_log(L_ERROR, "Could not add backend: allocation failed");
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return;
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return false;
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}
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wl_list_insert(&multi->backends, &sub->link);
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@ -160,6 +169,7 @@ void wlr_multi_backend_add(struct wlr_backend *_multi,
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sub->new_output.notify = new_output_reemit;
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wlr_signal_emit_safe(&multi->events.backend_add, backend);
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return true;
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}
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void wlr_multi_backend_remove(struct wlr_backend *_multi,
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@ -13,7 +13,7 @@ struct wlr_backend *wlr_multi_backend_create(struct wl_display *display);
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* Adds the given backend to the multi backend. This should be done before the
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* new backend is started.
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*/
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void wlr_multi_backend_add(struct wlr_backend *multi,
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bool wlr_multi_backend_add(struct wlr_backend *multi,
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struct wlr_backend *backend);
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void wlr_multi_backend_remove(struct wlr_backend *multi,
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