reactos/drivers/directx/dxg/eng.c

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/*
* COPYRIGHT: See COPYING in the top level directory
* PROJECT: ReactOS kernel
* PURPOSE: Native driver for dxg implementation
* FILE: drivers/directx/dxg/main.c
* PROGRAMER: Magnus olsen (magnus@greatlord.com)
* REVISION HISTORY:
* 30/12-2007 Magnus Olsen
*/
#include <dxg_int.h>
PDD_SURFACE_LOCAL
STDCALL
DxDdLockDirectDrawSurface(HANDLE hDdSurface)
{
PEDD_SURFACE pEDDSurface = NULL;
PDD_SURFACE_LOCAL pSurfacelcl = NULL;
pEDDSurface = DdHmgLock(hDdSurface, ObjType_DDSURFACE_TYPE, FALSE);
if (pEDDSurface != NULL)
{
pSurfacelcl = &pEDDSurface->ddsSurfaceLocal;
}
return pSurfacelcl;
}
BOOL
STDCALL
DxDdUnlockDirectDrawSurface(PDD_SURFACE_LOCAL pSurface)
{
BOOL retVal = FALSE;
PEDD_SURFACE pEDDSurface = NULL;
if (pSurface)
{
pEDDSurface = (PEDD_SURFACE)( ((PBYTE)pSurface) - sizeof(DD_BASEOBJECT));
// InterlockedDecrement(&pEDDSurface->pobj.cExclusiveLock);
retVal = TRUE;
}
return retVal;
}