save full SceneNode in RenderNode,added length sort.

inc/hgl/graph/MaterialRenderList.h

@@ -7,6 +7,7 @@
 VK_NAMESPACE_BEGIN
 class RenderAssignBuffer;
 class SceneNode;
+struct CameraInfo;
 
 /**
 * 同一材质的对象渲染列表
@@ -18,6 +19,8 @@ class MaterialRenderList
 
     Material *material;
 
+    CameraInfo *camera_info;
+
     RenderNodeList rn_list;
 
 private:
@@ -76,6 +79,11 @@ public:
 
     void Add(SceneNode *);
 
+    void SetCameraInfo(CameraInfo *ci)
+    {
+        camera_info=ci;
+    }
+
     void Clear()
     {
         rn_list.Clear();

inc/hgl/graph/MaterialRenderMap.h

@@ -9,10 +9,13 @@ public:
     MaterialRenderMap()=default;
     virtual ~MaterialRenderMap()=default;
 
-    void Begin()
+    void Begin(CameraInfo *ci)
     {
         for(auto *it:data_list)
+        {
+            it->value->SetCameraInfo(ci);
             it->value->Clear();
+        }
     }
 
     void End()

inc/hgl/graph/RenderList.h

@@ -20,6 +20,8 @@ namespace hgl
 
             GPUDevice *         device;
 
+            CameraInfo *        camera_info;                    ///<相机信息
+
             uint                renderable_count;               ///<可渲染对象数量
             MaterialRenderMap   mrl_map;                        ///<按材质分类的渲染列表
 
@@ -32,11 +34,12 @@ namespace hgl
             RenderList(GPUDevice *);
             virtual ~RenderList()=default;
             
-            virtual bool Expend(SceneNode *);                   ///<展开场景树到渲染列表
+            virtual void SetCamera(CameraInfo *ci){camera_info=ci;}                 ///<设置相机信息
+            virtual bool Expend(SceneNode *);                                       ///<展开场景树到渲染列表
 
-            virtual bool Render(RenderCmdBuffer *);             ///<渲染所有对象
+            virtual bool Render(RenderCmdBuffer *);                                 ///<渲染所有对象
 
-            virtual void Clear();                               ///<彻底清理
+            virtual void Clear();                                                   ///<彻底清理
         };//class RenderList
     }//namespace graph
 }//namespace hgl

inc/hgl/graph/RenderNode.h

@@ -9,12 +9,14 @@ namespace hgl
     {
         class Renderable;
         class MaterialInstance;
+        class SceneNode;
 
         struct RenderNode
         {
-            Matrix4f local_to_world;
+            SceneNode *scene_node;
 
-            Renderable *ri;
+            Vector3f world_position;
+            float to_camera_distance;
         };
 
         using RenderNodeList=List<RenderNode>;