Index: /trunk/Config.kmk
===================================================================
--- /trunk/Config.kmk	(revision 75451)
+++ /trunk/Config.kmk	(revision 75452)
@@ -506,4 +506,8 @@
 else ifdef VBOX_WITH_VDMA
   undef VBOX_WITH_VDMA
+endif
+# Gallium based WDDM driver
+if1of ($(KBUILD_TARGET), win)
+ VBOX_WITH_MESA3D = 1
 endif
 # Disable the Intel PXE ROM (uses Etherboot).