Index: /trunk/src/VBox/Additions/common/crOpenGL/load.c
===================================================================
--- /trunk/src/VBox/Additions/common/crOpenGL/load.c	(revision 42535)
+++ /trunk/src/VBox/Additions/common/crOpenGL/load.c	(revision 42536)
@@ -1025,8 +1025,8 @@
     PeekMessage(&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE);
 # ifdef VBOX_WITH_WDDM
-    hVBoxD3D = GetModuleHandle("VBoxDispD3D");
+    hVBoxD3D = GetModuleHandle(VBOX_MODNAME_DISPD3D);
     if (hVBoxD3D)
     {
-        hVBoxD3D = LoadLibrary("VBoxDispD3D");
+        hVBoxD3D = LoadLibrary(VBOX_MODNAME_DISPD3D);
     }
 
@@ -1051,5 +1051,5 @@
                 else
                 {
-                    crDebug("running with VBoxDispD3D");
+                    crDebug("running with " VBOX_MODNAME_DISPD3D);
                     stub.trackWindowVisibleRgn = 0;
                     stub.bRunningUnderWDDM = true;
Index: /trunk/src/VBox/Additions/common/crOpenGL/pack/packspu_init.c
===================================================================
--- /trunk/src/VBox/Additions/common/crOpenGL/pack/packspu_init.c	(revision 42535)
+++ /trunk/src/VBox/Additions/common/crOpenGL/pack/packspu_init.c	(revision 42536)
@@ -48,5 +48,5 @@
 
 #if defined(WINDOWS) && defined(VBOX_WITH_WDDM)
-    pack_spu.bRunningUnderWDDM = !!GetModuleHandle("VBoxDispD3D");
+    pack_spu.bRunningUnderWDDM = !!GetModuleHandle(VBOX_MODNAME_DISPD3D);
 #endif
 
Index: /trunk/src/VBox/GuestHost/OpenGL/include/chromium.h
===================================================================
--- /trunk/src/VBox/GuestHost/OpenGL/include/chromium.h	(revision 42535)
+++ /trunk/src/VBox/GuestHost/OpenGL/include/chromium.h	(revision 42536)
@@ -80,4 +80,12 @@
 /* to shut up gcc warning for struct VBOXUHGSMI * parameters */
 struct VBOXUHGSMI;
+
+#if defined(IN_GUEST) && (WINDOWS) && defined(VBOX_WITH_WDDM)
+# ifdef VBOX_WDDM_WOW64
+#  define VBOX_MODNAME_DISPD3D "VBoxDispD3D-x86"
+# else
+#  define VBOX_MODNAME_DISPD3D "VBoxDispD3D"
+# endif
+#endif
 
 #ifndef APIENTRY