win32ss/reactx/dxg/dd.c

   1 /*
   2  * COPYRIGHT:        See COPYING in the top level directory
   3  * PROJECT:          ReactOS kernel
   4  * PURPOSE:          Native driver for dxg implementation
   5  * FILE:             win32ss/reactx/dxg/dd.c
   6  * PROGRAMER:        Sebastian Gasiorek (sebastian.gasiorek@reactos.org)
   7  */
   8
   9 #include <dxg_int.h>
  10
  11 DWORD
  12 NTAPI
  13 DxDdCanCreateSurface(
  14     HANDLE DdHandle,
  15     PDD_CANCREATESURFACEDATA SurfaceData)
  16 {
  17     PEDD_DIRECTDRAW_LOCAL peDdL;
  18     PEDD_DIRECTDRAW_GLOBAL peDdGl;
  19     DWORD RetVal = DDHAL_DRIVER_NOTHANDLED;
  20
  21     peDdL = (PEDD_DIRECTDRAW_LOCAL)DdHmgLock(DdHandle, ObjType_DDLOCAL_TYPE, FALSE);
  22     if (!peDdL)
  23         return RetVal;
  24
  25     peDdGl = peDdL->peDirectDrawGlobal2;
  26     gpEngFuncs.DxEngLockHdev(peDdGl->hDev);
  27
  28     // assign out DirectDrawGlobal to SurfaceData
  29     SurfaceData->lpDD = (PDD_DIRECTDRAW_GLOBAL)peDdGl;
  30
  31     if (peDdGl->ddCallbacks.dwFlags && DDHAL_CB32_CANCREATESURFACE)
  32     {
  33         RetVal = peDdGl->ddCallbacks.CanCreateSurface(SurfaceData);
  34     }
  35
  36     gpEngFuncs.DxEngUnlockHdev(peDdGl->hDev);
  37     InterlockedDecrement((VOID*)&peDdL->pobj.cExclusiveLock);
  38
  39     return RetVal;
  40 }