Changeset 77342 in vbox for trunk/src/VBox/Additions

Timestamp:

Feb 18, 2019 9:08:59 AM (6 years ago)

Author:

vboxsync

Message:

Additions/WDDM: Return TRUE in VBoxVidPnIsSupported() if hVidPn is NULL; the display adapter can always be configured to display nothing.

File:

• trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/VBoxMPVidPn.cpp (modified) (1 diff)

trunk/src/VBox/Additions/WINNT/Graphics/Video/mp/wddm/VBoxMPVidPn.cpp

@@ -1689 +1689 @@
 NTSTATUS VBoxVidPnIsSupported(PVBOXMP_DEVEXT pDevExt, D3DKMDT_HVIDPN hVidPn, BOOLEAN *pfSupported)
 {
+    /* According Microsoft Docs we must return pfSupported = TRUE here if hVidPn is NULL, as
+     * the display adapter can always be configured to display nothing. */
+    if (hVidPn == NULL)
+    {
+        *pfSupported = TRUE;
+        return STATUS_SUCCESS;
+    }
+
     *pfSupported = FALSE;