added comment at RenderList2D

inc/hgl/graph/RenderList2D.h

@@ -10,6 +10,18 @@ namespace hgl
 {
     namespace graph
     {
+        using RenderableList=List<Renderable *>;
+
+        struct RenderableList
+        {
+            Material *mtl;
+
+            RenderableList ri_list;
+
+            GPUArrayBuffer *.........array;
+
+        };
+
         /**
          * 渲染对象列表<br>
          * 已经展开的渲染对象列表，产生mvp用UBO/SSBO等数据，最终创建RenderCommandBuffer
@@ -32,7 +44,9 @@ namespace hgl
 
         private:
 
-            List<Renderable *> ri_list;
+            RenderableList ri_list;
+
+             *ri_list_by_mtl;         按材质区分的渲染列表
 
             VkDescriptorSet ds_list[DESCRIPTOR_SET_TYPE_COUNT];
             DescriptorSet *renderable_desc_sets;

inc/hgl/graph/VKMaterialInstance.h

@@ -34,4 +34,3 @@ public:
 };//class MaterialInstance
 VK_NAMESPACE_END
 #endif//HGL_GRAPH_VULKAN_MATERIAL_INSTANCE_INCLUDE
- 

inc/hgl/graph/VKPipeline.h

@@ -35,6 +35,8 @@ public:
 
     operator VkPipeline(){return pipeline;}
 
+    const PipelineData *GetData()const{return data;}
+
     const bool IsAlphaTest()const{return data->alpha_test>0;}
     const bool IsAlphaBlend()const{return data->alpha_blend;}
 };//class GraphicsPipeline