wined3d: Use FBOs for offscreen rendering by default.

dlls/wined3d/wined3d_main.c

@@ -41,7 +41,7 @@ wined3d_settings_t wined3d_settings =
     PS_HW,          /* Hardware by default */
     VBO_HW,         /* Hardware by default */
     TRUE,           /* Use of GLSL enabled by default */
-    ORM_BACKBUFFER, /* Use the backbuffer to do offscreen rendering */
+    ORM_FBO,        /* Use FBOs to do offscreen rendering */
     RTL_AUTO,       /* Automatically determine best locking method */
     PCI_VENDOR_NONE,/* PCI Vendor ID */
     PCI_DEVICE_NONE,/* PCI Device ID */