Changeset 8383 in vbox for trunk/src/VBox/Additions/WINNT/Graphics/Miniport

Timestamp:

Apr 25, 2008 11:23:10 AM (17 years ago)

Author:

vboxsync

Message:

Additions/WINNT: made the graphics miniport driver set the graphics guest capability

File:

• trunk/src/VBox/Additions/WINNT/Graphics/Miniport/VBoxVideo.cpp (modified) (4 diffs)

trunk/src/VBox/Additions/WINNT/Graphics/Miniport/VBoxVideo.cpp

@@ -23 +23 @@
 
 #include <VBox/VBoxGuest.h>
+#include <VBox/VBoxDev.h>
 #include <VBox/VBoxVideo.h>
 
@@ -1830 +1831 @@
 
 /**
+ * VBoxVideoSetGraphicsCap
+ * 
+ * Tells the host whether or not we currently support graphics in the
+ * additions
+ */
+BOOLEAN FASTCALL VBoxVideoSetGraphicsCap(BOOLEAN isEnabled)
+{
+    VMMDevReqGuestCapabilities2 *req = NULL;
+    int rc;
+
+    rc = VbglGRAlloc ((VMMDevRequestHeader **)&req,
+                      sizeof (VMMDevReqGuestCapabilities2),
+                      VMMDevReq_SetGuestCapabilities);
+
+    if (!RT_SUCCESS(rc))
+        dprintf(("VBoxVideoSetGraphicsCap: failed to allocate a request, rc=%Rrc\n", rc));
+    else
+    {
+        req->u32OrMask = isEnabled ? VMMDEV_GUEST_SUPPORTS_GRAPHICS : 0;
+        req->u32NotMask = isEnabled ? 0 : VMMDEV_GUEST_SUPPORTS_GRAPHICS;
+  
+        rc = VbglGRPerform (&req->header);
+        if (!RT_SUCCESS(rc) || !RT_SUCCESS(req->header.rc))
+            dprintf(("VBoxVideoSetGraphicsCap: request failed, rc = %Rrc, VMMDev rc = %Rrc\n", rc, req->header.rc));
+        if (RT_SUCCESS(rc))
+            rc = req->header.rc;
+    }
+    if (req != NULL)
+        VbglGRFree (&req->header);
+    return RT_SUCCESS(rc);
+}
+
+/**
  * VBoxVideoSetCurrentMode
  *
@@ -1865 +1899 @@
     /** @todo read from the port to see if the mode switch was successful */
 
+    /* Tell the host that we now support graphics in the additions */
+    VBoxVideoSetGraphicsCap(TRUE);
     return TRUE;
 }
@@ -1897 +1933 @@
 #endif
 
-   return TRUE;
+    /* Tell the host that we no longer support graphics in the additions */
+    VBoxVideoSetGraphicsCap(FALSE);
+    return TRUE;
 }