Sync with trunk revision r58045 to bring the corrections on configure.cmd and on...
[reactos.git] / win32ss / reactx / dxg / eng.c
1 /*
2 * COPYRIGHT: See COPYING in the top level directory
3 * PROJECT: ReactOS kernel
4 * PURPOSE: Native driver for dxg implementation
5 * FILE: drivers/directx/dxg/main.c
6 * PROGRAMER: Magnus olsen (magnus@greatlord.com)
7 * REVISION HISTORY:
8 * 30/12-2007 Magnus Olsen
9 */
10
11 #include <dxg_int.h>
12
13 PDD_SURFACE_LOCAL
14 NTAPI
15 DxDdLockDirectDrawSurface(HANDLE hDdSurface)
16 {
17 PEDD_SURFACE pEDDSurface = NULL;
18 PDD_SURFACE_LOCAL pSurfacelcl = NULL;
19
20 pEDDSurface = DdHmgLock(hDdSurface, ObjType_DDSURFACE_TYPE, FALSE);
21 if (pEDDSurface != NULL)
22 {
23 pSurfacelcl = &pEDDSurface->ddsSurfaceLocal;
24 }
25
26 return pSurfacelcl;
27 }
28
29 BOOL
30 NTAPI
31 DxDdUnlockDirectDrawSurface(PDD_SURFACE_LOCAL pSurface)
32 {
33 BOOL retVal = FALSE;
34 //PEDD_SURFACE pEDDSurface = NULL;
35
36 if (pSurface)
37 {
38 // pEDDSurface = (PEDD_SURFACE)( ((PBYTE)pSurface) - sizeof(DD_BASEOBJECT));
39 // InterlockedDecrement(&pEDDSurface->pobj.cExclusiveLock);
40 retVal = TRUE;
41 }
42
43 return retVal;
44 }