四个方向 分块渲染

render_2D/renderable/Renderable.cpp

@@ -54,6 +54,35 @@ void Renderable::render(const ::Scene_Render_Context& context) {
     }
 }
 
+void Renderable::build_task_graph(Renderable_Task_Graph& graph) {
+    build_paint_task_graph(graph);
+}
+
+void Renderable::build_paint_task_graph(Renderable_Task_Graph& graph) {
+    add_paint_task(graph, "paint", [this](detail::Painter& painter,
+                                          const Render_State_View& state) {
+        paint(painter, state);
+    });
+}
+
+Renderable_Task_Graph::Task Renderable::add_paint_task(
+    Renderable_Task_Graph& graph,
+    std::string name,
+    Paint_Task_Function function) {
+    return graph.emplace(
+        [this, function = std::move(function)](const Scene_Render_Context& context) {
+            if (!is_visible() || context.color_cache == nullptr)
+                return;
+            auto* cache = dynamic_cast<detail::Blend2D_Color_Cache*>(context.color_cache);
+            if (!cache)
+                return;
+            detail::Painter painter(*cache, viewport_size());
+            if (painter)
+                function(painter, render_state_view());
+        },
+        std::move(name));
+}
+
 void Renderable::changed() noexcept {
     invalidate_cache();
     plot_.notify_model_dirty();