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Should have committed this along with r18529

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svn path=/trunk/; revision=18531
This commit is contained in:
Gé van Geldorp 2005-10-17 21:40:37 +00:00
parent 3d7512b7cd
commit cf74899c6f
1 changed files with 60 additions and 0 deletions
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60
reactos/subsys/win32k/objects/dc.c
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@ -661,6 +661,61 @@ IntPrepareDriverIfNeeded()
return (PrimarySurface.PreparedDriver ? TRUE : IntPrepareDriver()); 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 BOOL FASTCALL
IntCreatePrimarySurface() IntCreatePrimarySurface()
{ {
@ -674,6 +729,11 @@ IntCreatePrimarySurface()
return FALSE; return FALSE;
} }
if (! PrepareVideoPrt())
{
return FALSE;
}
DPRINT("calling EnableSurface\n"); DPRINT("calling EnableSurface\n");
/* Enable the drawing surface */ /* Enable the drawing surface */
PrimarySurface.Handle = PrimarySurface.Handle =