+ // First level objects
+ this->display->roundtrip();
+ // Second level objects
+ this->display->roundtrip();
+ // Third level objects
+ this->display->roundtrip();
+
+ return 0;
+}
+
+// _ _ _ _ _ ____
+// (_)_ __ (_) |_ | | __ _ _ _ ___ _ _| |_ / /\ \
+// | | '_ \| | __| | |/ _` | | | |/ _ \| | | | __| | | |
+// | | | | | | |_ | | (_| | |_| | (_) | |_| | |_| | | |
+// |_|_| |_|_|\__|___|_|\__,_|\__, |\___/ \__,_|\__| | | |
+// |_____| |___/ \_\/_/
+char const *init_layout() {
+ if (!g_afb_instance->controller) {
+ return "ivi_controller global not available";
+ }
+
+ if (g_afb_instance->outputs.empty()) {
+ return "no output was set up!";
+ }
+
+ auto &c = g_afb_instance->controller;
+
+ auto &o = g_afb_instance->outputs.front();
+ auto &s = c->screens.begin()->second;
+ auto &layers = c->layers;
+
+ // XXX: Write output dimensions to ivi controller...
+ c->output_size = genivi::size{uint32_t(o->width), uint32_t(o->height)};
+
+ // Clear scene
+ layers.clear();
+
+ // Clear screen
+ s->clear();
+
+ // Setup our dummy scene...
+ c->layer_create(100, 0, 0); // bottom layer, anything else
+ c->layer_create(1000, 0, 0); // top layer, mandelbrot
+
+ auto &l100 = c->layers[100];
+ auto &l1k = c->layers[1000];
+
+ // Set layers fullscreen
+ l100->set_destination_rectangle(0, 0, o->width, o->height);
+ l1k->set_destination_rectangle(0, 0, o->width, o->height);
+ l100->set_visibility(1);
+ l1k->set_visibility(1);
+
+ // Add layers to screen
+ s->set_render_order({100, 1000});
+
+ c->commit_changes();
+
+ g_afb_instance->display->flush();
+
+ return nullptr;
+}
+
+int display_event_callback(sd_event_source *evs, int fd, uint32_t events,
+ void *data) {
+ if ((events & EPOLLHUP) != 0) {
+ logerror("The compositor hung up, dying now.");
+ delete g_afb_instance;
+ g_afb_instance = nullptr;
+ goto error;
+ }