--- trunk/reactos/subsys/win32k/objects/dc.c 2005-10-17 21:40:38 UTC (rev 18530)
+++ trunk/reactos/subsys/win32k/objects/dc.c 2005-10-17 21:40:37 UTC (rev 18531)
@@ -661,6 +661,61 @@
return (PrimarySurface.PreparedDriver ? TRUE : IntPrepareDriver());
}
+static BOOL FASTCALL
+PrepareVideoPrt()
+{
+ PIRP Irp;
+ NTSTATUS Status;
+ IO_STATUS_BLOCK Iosb;
+ BOOL Prepare = TRUE;
+ ULONG Length = sizeof(BOOL);
+ PIO_STACK_LOCATION StackPtr;
+ LARGE_INTEGER StartOffset;
+ PFILE_OBJECT FileObject = PrimarySurface.VideoFileObject;
+ PDEVICE_OBJECT DeviceObject = FileObject->DeviceObject;
+
+ DPRINT("PrepareVideoPrt() called\n");
+
+ KeClearEvent(&PrimarySurface.VideoFileObject->Event);
+
+ ObReferenceObjectByPointer(FileObject, 0, IoFileObjectType, KernelMode);
+
+ StartOffset.QuadPart = 0;
+ Irp = IoBuildSynchronousFsdRequest(IRP_MJ_WRITE,
+ DeviceObject,
+ (PVOID) &Prepare,
+ Length,
+ &StartOffset,
+ NULL,
+ &Iosb);
+ if (NULL == Irp)
+ {
+ return FALSE;
+ }
+
+ /* Set up IRP Data */
+ Irp->Tail.Overlay.OriginalFileObject = FileObject;
+ Irp->RequestorMode = KernelMode;
+ Irp->Overlay.AsynchronousParameters.UserApcRoutine = NULL;
+ Irp->Overlay.AsynchronousParameters.UserApcContext = NULL;
+ Irp->Flags |= IRP_WRITE_OPERATION;
+
+ /* Setup Stack Data */
+ StackPtr = IoGetNextIrpStackLocation(Irp);
+ StackPtr->FileObject = PrimarySurface.VideoFileObject;
+ StackPtr->Parameters.Write.Key = 0;
+
+ Status = IoCallDriver(DeviceObject, Irp);
+
+ if (STATUS_PENDING == Status)
+ {
+ KeWaitForSingleObject(&FileObject->Event, Executive, KernelMode, TRUE, 0);
+ Status = Iosb.Status;
+ }
+
+ return NT_SUCCESS(Status);
+}
+
BOOL FASTCALL
IntCreatePrimarySurface()
{
@@ -674,6 +729,11 @@
return FALSE;
}
+ if (! PrepareVideoPrt())
+ {
+ return FALSE;
+ }
+
DPRINT("calling EnableSurface\n");
/* Enable the drawing surface */
PrimarySurface.Handle =