Changeset 60289 in vbox

Timestamp:

Apr 1, 2016 1:40:42 PM (9 years ago)

Author:

vboxsync

Message:

bugref:8309: Additions/win/WDDM: Fix scan line reporting if VSync notifications are disabled, fixes hangs with PowerPoint if 3D is enabled with WDDM installed but no Aero design is used ()

File:

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

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

@@ -1970 +1970 @@
             VSyncTime.QuadPart = VSyncTime.QuadPart - DevVSyncTime.QuadPart;
             /* time is in 100ns, */
-            curScanLine = (uint32_t)((pTarget->Size.cy * VSyncTime.QuadPart) / DevVSyncTime.QuadPart);
+            curScanLine = (uint32_t)((pTarget->Size.cy * VSyncTime.QuadPart) / 166666LL); /* ASSUMES 60Hz*/
             if (pDevExt->bVSyncTimerEnabled)
             {