Changeset 82679 in vbox for trunk/src/VBox/Additions/WINNT/Graphics/Video

Timestamp:

Jan 8, 2020 7:37:51 PM (5 years ago)

Author:

vboxsync

Message:

WDDM: HardwareAccess for create/delete surface.

File:

• trunk/src/VBox/Additions/WINNT/Graphics/Video/disp/wddm/gallium/GaDrvEnvWddm.cpp (modified) (2 diffs)

trunk/src/VBox/Additions/WINNT/Graphics/Video/disp/wddm/gallium/GaDrvEnvWddm.cpp

@@ -220 +220 @@
     ddiEscape.hDevice               = 0; // pThis->mWddmCallbacks.hDevice;
     ddiEscape.Flags.Value           = 0;
+    ddiEscape.Flags.HardwareAccess  = 1; // Required, otherwise graphics corruption can happen. No idea why.
+                                         // Eventually we probably have to create allocations for surfaces,
+                                         // as a WDDM driver should do. Then the Escape hack will be removed.
     ddiEscape.pPrivateDriverData    = pData;
     ddiEscape.PrivateDriverDataSize = cbAlloc;
@@ -253 +256 @@
     ddiEscape.hDevice               = 0; // pThis->mWddmCallbacks.hDevice;
     ddiEscape.Flags.Value           = 0;
-    ddiEscape.Flags.HardwareAccess  = 1; /// @todo Remove when the miniport has the ref counting for the host objects
+    ddiEscape.Flags.HardwareAccess  = 1; // Required, otherwise graphics corruption can happen. No idea why.
+                                         // Eventually we probably have to create allocations for surfaces,
+                                         // as a WDDM driver should do. Then the Escape hack will be removed.
     ddiEscape.pPrivateDriverData    = &data;
     ddiEscape.PrivateDriverDataSize = sizeof(data);