Method _rendering_update

scene/2d/tile_map_layer.cpp:212–464

////////////////////////// Rendering //////////////////////////////////////

/////////////////////////////// Rendering //////////////////////////////////////
void TileMapLayer::_rendering_update(bool p_force_cleanup) {
	RenderingServer *rs = RenderingServer::get_singleton();

	// Check if we should cleanup everything.
	bool forced_cleanup = p_force_cleanup || !enabled || tile_set.is_null() || !is_visible_in_tree();

	// ----------- Layer level processing -----------
	if (!forced_cleanup) {
		// Modulate the layer.
		Color layer_modulate = get_modulate();
#ifdef TOOLS_ENABLED
		if (highlight_mode == HIGHLIGHT_MODE_BELOW) {
			layer_modulate = layer_modulate.darkened(0.5);
		} else if (highlight_mode == HIGHLIGHT_MODE_ABOVE) {
			layer_modulate = layer_modulate.darkened(0.5);
			layer_modulate.a *= 0.3;
		}
#endif // TOOLS_ENABLED
		rs->canvas_item_set_modulate(get_canvas_item(), layer_modulate);
	}

	// ----------- Quadrants processing -----------

	// List all rendering quadrants to update, creating new ones if needed.
	SelfList<RenderingQuadrant>::List dirty_rendering_quadrant_list;

	// Check if anything changed that might change the quadrant shape.
	// If so, recreate everything.
	bool quadrant_shape_changed = dirty.flags[DIRTY_FLAGS_LAYER_Y_SORT_ENABLED] || dirty.flags[DIRTY_FLAGS_TILE_SET] ||
			(is_y_sort_enabled() && (dirty.flags[DIRTY_FLAGS_LAYER_Y_SORT_ORIGIN] || dirty.flags[DIRTY_FLAGS_LAYER_X_DRAW_ORDER_REVERSED] || dirty.flags[DIRTY_FLAGS_LAYER_LOCAL_TRANSFORM])) ||
			(!is_y_sort_enabled() && dirty.flags[DIRTY_FLAGS_LAYER_RENDERING_QUADRANT_SIZE]);

	// Free all quadrants.
	if (forced_cleanup || quadrant_shape_changed) {
		for (const KeyValue<Vector2i, Ref<RenderingQuadrant>> &kv : rendering_quadrant_map) {
			for (const RID &ci : kv.value->canvas_items) {
				if (ci.is_valid()) {
					rs->free(ci);
				}
			}
			kv.value->cells.clear();
		}
		rendering_quadrant_map.clear();
		_rendering_was_cleaned_up = true;
	}

	if (!forced_cleanup) {
		// List all quadrants to update, recreating them if needed.
		if (dirty.flags[DIRTY_FLAGS_TILE_SET] || dirty.flags[DIRTY_FLAGS_LAYER_IN_TREE] || _rendering_was_cleaned_up) {
			// Update all cells.
			for (KeyValue<Vector2i, CellData> &kv : tile_map_layer_data) {
				CellData &cell_data = kv.value;
				_rendering_quadrants_update_cell(cell_data, dirty_rendering_quadrant_list);
			}
		} else {
			// Update dirty cells.
			for (SelfList<CellData> *cell_data_list_element = dirty.cell_list.first(); cell_data_list_element; cell_data_list_element = cell_data_list_element->next()) {
				CellData &cell_data = *cell_data_list_element->self();