Index: /trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/VBoxMPMisc.cpp
===================================================================
--- /trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/VBoxMPMisc.cpp	(revision 82411)
+++ /trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/VBoxMPMisc.cpp	(revision 82412)
@@ -1507,2 +1507,19 @@
 }
 
+char const *vboxWddmAllocTypeString(PVBOXWDDM_ALLOCATION pAlloc)
+{
+    switch (pAlloc->enmType)
+    {
+        case VBOXWDDM_ALLOC_TYPE_UNEFINED:                 return "UNEFINED"; 
+        case VBOXWDDM_ALLOC_TYPE_STD_SHAREDPRIMARYSURFACE: return "SHAREDPRIMARYSURFACE";
+        case VBOXWDDM_ALLOC_TYPE_STD_SHADOWSURFACE:        return "SHADOWSURFACE";
+        case VBOXWDDM_ALLOC_TYPE_STD_STAGINGSURFACE:       return "STAGINGSURFACE";
+        case VBOXWDDM_ALLOC_TYPE_STD_GDISURFACE:           return "GDISURFACE"; 
+        case VBOXWDDM_ALLOC_TYPE_UMD_RC_GENERIC:           return "UMD_RC_GENERIC"; 
+        case VBOXWDDM_ALLOC_TYPE_UMD_HGSMI_BUFFER:         return "UMD_HGSMI_BUFFER"; 
+        default: break;
+    }
+    AssertFailed();
+    return "UNKNOWN";
+ 
+}
Index: /trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/VBoxMPMisc.h
===================================================================
--- /trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/VBoxMPMisc.h	(revision 82411)
+++ /trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/VBoxMPMisc.h	(revision 82412)
@@ -163,3 +163,5 @@
 void vboxWddmDmSetupDefaultVramLocation(PVBOXMP_DEVEXT pDevExt, D3DDDI_VIDEO_PRESENT_SOURCE_ID ModifiedVidPnSourceId, struct VBOXWDDM_SOURCE *paSources);
 
+char const *vboxWddmAllocTypeString(PVBOXWDDM_ALLOCATION pAlloc);
+
 #endif /* !GA_INCLUDED_SRC_WINNT_Graphics_Video_mp_wddm_VBoxMPMisc_h */