将顶点输入流最终格式绑定放在MaterialInstance中，并改动相关类。

inc/hgl/graph/VKPipeline.h

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