Added UpdateMaterialInstance method. but no any test.

inc/hgl/graph/MaterialRenderList.h

@@ -96,5 +96,6 @@ public:
     void Render(RenderCmdBuffer *);
 
     void UpdateLocalToWorld();          //刷新所有对象的LocalToWorld矩阵
+    void UpdateMaterialInstance(SceneNode *);
 };//class MaterialRenderList
 VK_NAMESPACE_END

inc/hgl/graph/RenderList.h

@@ -40,6 +40,7 @@ namespace hgl
             virtual bool Render(RenderCmdBuffer *);                                 ///<渲染所有对象
 
             virtual void UpdateLocalToWorld();                                      ///<更新所有对象的变换数据
+            virtual void UpdateMaterialInstance(SceneNode *);                       ///<有对象互换了材质实例
 
             virtual void Clear();                                                   ///<彻底清理
         };//class RenderList

inc/hgl/graph/RenderNode.h

@@ -13,6 +13,8 @@ namespace hgl
 
         struct RenderNode
         {
+            uint        index;                              ///<在MaterialRenderList中的索引
+
             SceneNode * scene_node;
 
             uint32      l2w_version;

inc/hgl/graph/VKRenderable.h

@@ -103,6 +103,20 @@ public:
 
     const   PrimitiveDataBuffer *GetDataBuffer      ()const{return primitive_data_buffer;}
     const   PrimitiveRenderData *GetRenderData      ()const{return primitive_render_data;}
+
+public:
+
+            bool                ChangeMaterialInstance(MaterialInstance *mi)
+            {
+                if(!mi)
+                    return(false);
+
+                if(mi->GetMaterial()!=mat_inst->GetMaterial())      //不能换母材质
+                    return(false);
+
+                mat_inst=mi;
+                return(true);
+            }
 };//class Renderable
 
 Renderable *CreateRenderable(Primitive *,MaterialInstance *,Pipeline *);

src/SceneGraph/MaterialRenderList.cpp

@@ -111,6 +111,8 @@ void MaterialRenderList::Add(SceneNode *sn)
 {
     RenderNode rn;
 
+    rn.index            =rn_list.GetCount();
+
     rn.scene_node       =sn;
 
     rn.l2w_version      =sn->GetLocalToWorldMatrixVersion();
@@ -187,6 +189,30 @@ void MaterialRenderList::UpdateLocalToWorld()
     }
 }
 
+void MaterialRenderList::UpdateMaterialInstance(SceneNode *sn)
+{
+    if(!sn)return;
+
+    if(!assign_buffer)
+        return;
+    
+    const int node_count=rn_list.GetCount();
+
+    if(node_count<=0)return;
+    RenderNode *rn=rn_list.GetData();
+
+    for(int i=0;i<node_count;i++)
+    {
+        if(rn->scene_node==sn)
+        {
+            assign_buffer->UpdateMaterialInstance(rn);
+            return;
+        }
+
+        ++rn;
+    }
+}
+
 void MaterialRenderList::RenderItem::Set(Renderable *ri)
 {
     pipeline=ri->GetPipeline();

src/SceneGraph/RenderAssignBuffer.cpp

@@ -105,6 +105,18 @@ void RenderAssignBuffer::UpdateLocalToWorld(const RenderNodePointerList &rnp_lis
     l2w_buffer->Unmap();
 }
 
+void RenderAssignBuffer::UpdateMaterialInstance(const RenderNode *rn)
+{
+    if(!rn)
+        return;
+
+    AssignData *adp=(AssignData *)(assign_vab->DeviceBuffer::Map(sizeof(AssignData)*rn->index,sizeof(AssignData)));
+
+    adp->mi=mi_set.Find(rn->scene_node->GetRenderable()->GetMaterialInstance());
+
+    assign_vab->Unmap();
+}
+
 void RenderAssignBuffer::StatMI(const RenderNodeList &rn_list)
 {
     mi_set.Clear();

src/SceneGraph/RenderAssignBuffer.h

@@ -93,5 +93,6 @@ public:
     void WriteNode(const RenderNodeList &);
 
     void UpdateLocalToWorld(const RenderNodePointerList &,const int first,const int last);
+    void UpdateMaterialInstance(const RenderNode *);
 };//struct RenderAssignBuffer
 VK_NAMESPACE_END

src/SceneGraph/RenderList.cpp

@@ -85,5 +85,22 @@ namespace hgl
 
             mrl_map.UpdateLocalToWorld();
         }
+
+        void RenderList::UpdateMaterialInstance(SceneNode *sn)
+        {
+            if(!sn)return;
+
+            Renderable *ri=sn->GetRenderable();
+
+            if(!ri)return;
+
+            Material *mtl=ri->GetMaterial();
+            MaterialRenderList *mrl;
+
+            if(!mrl_map.Get(mtl,mrl))        //找到对应的
+                return;
+
+            mrl->UpdateMaterialInstance(sn);
+        }
     }//namespace graph
 }//namespace hgl