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documented : EngLockDirectDrawSurface

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small optimize of EngLockDirectDrawSurface, EngDxIoctl, 

svn path=/trunk/; revision=31469
This commit is contained in:
Magnus Olsen 2007-12-27 19:24:22 +00:00
parent 1f954bbfe6
commit 9781b2b0d9
1 changed files with 33 additions and 21 deletions
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54
reactos/subsystems/win32/win32k/ntddraw/eng.c
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@ -143,37 +143,49 @@ EngDxIoctl(ULONG ulIoctl,
ULONG ulBufferSize)
{
PGD_ENGDXIOCTL pfnEngDxIoctl = (PGD_ENGDXIOCTL)gpDxFuncs[DXG_INDEX_DxDdIoctl].pfn;
if (pfnEngDxIoctl == NULL)
{
DPRINT1("Warring no pfnEngDxIoctl");
return DDERR_UNSUPPORTED;
}
DWORD retVal = DDERR_UNSUPPORTED;
DPRINT1("Calling on dxg.sys pfnEngDxIoctl");
return pfnEngDxIoctl(ulIoctl, pBuffer, ulBufferSize);
if (pfnEngDxIoctl != NULL)
{
retVal = pfnEngDxIoctl(ulIoctl, pBuffer, ulBufferSize);
}
return retVal;
}
/************************************************************************/
/* EngLockDirectDrawSurface */
/************************************************************************/
/*++
* @name EngLockDirectDrawSurface
* @implemented
*
* The function EngUnlockDirectDrawSurface locking the dx surface
* @param HANDLE hSurface
* The handle of a surface
*
* @return
* This return vaild or NULL pointer to PDD_SURFACE_LOCAL object
*
* @remarks.
* None
*
*--*/
PDD_SURFACE_LOCAL
STDCALL
EngLockDirectDrawSurface(HANDLE hSurface)
{
PGD_ENGLOCKDIRECTDRAWSURFACE pfnEngLockDirectDrawSurface = NULL;
INT i;
DXG_GET_INDEX_FUNCTION(DXG_INDEX_DxDdLockDirectDrawSurface, pfnEngLockDirectDrawSurface);
if (pfnEngLockDirectDrawSurface == NULL)
{
DPRINT1("Warring no pfnEngLockDirectDrawSurface");
return DDHAL_DRIVER_NOTHANDLED;
}
PGD_ENGLOCKDIRECTDRAWSURFACE pfnEngLockDirectDrawSurface = (PGD_ENGLOCKDIRECTDRAWSURFACE)gpDxFuncs[DXG_INDEX_DxDdLockDirectDrawSurface].pfn;
PDD_SURFACE_LOCAL retVal = NULL;
DPRINT1("Calling on dxg.sys pfnEngLockDirectDrawSurface");
return pfnEngLockDirectDrawSurface(hSurface);
if (pfnEngLockDirectDrawSurface != NULL)
{
retVal = pfnEngLockDirectDrawSurface(hSurface);
}
return retVal;
}