output: Set output mode during main commit

Removes duplication across all the backends to finally apply the mode
to the output.

backend/drm/drm.c

@@ -762,19 +762,6 @@ bool drm_connector_commit_state(struct wlr_drm_connector *conn,
 		conn->cursor_enabled = false;
 		conn->crtc = NULL;
 	}
-	if (pending.base->committed & WLR_OUTPUT_STATE_MODE) {
-		switch (pending.base->mode_type) {
-		case WLR_OUTPUT_STATE_MODE_FIXED:
-			wlr_output_update_mode(&conn->output, pending.base->mode);
-			break;
-		case WLR_OUTPUT_STATE_MODE_CUSTOM:
-			wlr_output_update_custom_mode(&conn->output,
-				pending.base->custom_mode.width,
-				pending.base->custom_mode.height,
-				pending.base->custom_mode.refresh);
-			break;
-		}
-	}
 	if (flags & DRM_MODE_PAGE_FLIP_EVENT) {
 		conn->pending_page_flip_crtc = conn->crtc->id;
 

backend/headless/output.c

@@ -27,7 +27,6 @@ static bool output_set_custom_mode(struct wlr_headless_output *output,
 
 	output->frame_delay = 1000000 / refresh;
 
-	wlr_output_update_custom_mode(&output->wlr_output, width, height, refresh);
 	return true;
 }
 

backend/wayland/output.c

@@ -566,11 +566,6 @@ static bool output_commit(struct wlr_output *wlr_output,
 
 	wl_display_flush(output->backend->remote_display);
 
-	if (state->committed & WLR_OUTPUT_STATE_MODE) {
-		wlr_output_update_custom_mode(wlr_output,
-			state->custom_mode.width, state->custom_mode.height, 0);
-	}
-
 	return true;
 }
 

backend/x11/output.c

@@ -74,8 +74,6 @@ static bool output_set_custom_mode(struct wlr_output *wlr_output,
 		return false;
 	}
 
-	wlr_output_update_custom_mode(&output->wlr_output, width, height, 0);
-
 	// Move the pointer to its new location
 	update_x11_pointer_position(output, output->x11->time);
 

types/output/output.c

@@ -814,6 +814,20 @@ bool wlr_output_commit_state(struct wlr_output *output,
 		wlr_swapchain_set_buffer_submitted(output->swapchain, pending.buffer);
 	}
 
+	if (pending.committed & WLR_OUTPUT_STATE_MODE) {
+		switch (pending.mode_type) {
+		case WLR_OUTPUT_STATE_MODE_FIXED:
+			wlr_output_update_mode(output, pending.mode);
+			break;
+		case WLR_OUTPUT_STATE_MODE_CUSTOM:
+			wlr_output_update_custom_mode(output,
+				pending.custom_mode.width,
+				pending.custom_mode.height,
+				pending.custom_mode.refresh);
+			break;
+		}
+	}
+
 	struct wlr_output_event_commit event = {
 		.output = output,
 		.committed = pending.committed,