used DescriptorBinding in Global Binding

example/Vulkan/second_triangle.cpp

@@ -60,7 +60,7 @@ private:
         if(!material_instance)
             return(false);
 
-        db->BindGlobalDescriptor(material_instance);
+        db->BindGlobal(material_instance);
             
 //        pipeline=db->CreatePipeline(material_instance,sc_render_target,OS_TEXT("res/pipeline/solid2d"));
         pipeline=CreatePipeline(material_instance,InlinePipeline::Solid2D,Prim::Triangles);     //等同上一行，为Framework重载，默认使用swapchain的render target

example/common/VulkanAppFramework.h

@@ -142,7 +142,7 @@ public:
 
             ubo_vp_info=db->CreateUBO(sizeof(ViewportInfo),&vp_info);
 
-            db->SetGlobal(GlobalDescriptor::ViewportInfo.name,ubo_vp_info);
+            db->AddGlobalUBO(GlobalDescriptor::ViewportInfo.name,ubo_vp_info);
         }
 
         return(true);