win32ss/gdi/ntgdi/wingl.c

   1 /*
   2  * PROJECT:         ReactOS win32 kernel mode subsystem
   3  * LICENSE:         GPL - See COPYING in the top level directory
   4  * FILE:            subsystems/win32/win32k/objects/wingl.c
   5  * PURPOSE:         WinGL API
   6  * PROGRAMMER:
   7  */
   8
   9 #include <win32k.h>
  10
  11 #define NDEBUG
  12 #include <debug.h>
  13
  14 static
  15 INT
  16 FASTCALL
  17 IntGetipfdDevMax(PDC pdc)
  18 {
  19   INT Ret = 0;
  20   PPDEVOBJ ppdev = pdc->ppdev;
  21
  22   if (ppdev->flFlags & PDEV_META_DEVICE)
  23   {
  24      return 0;
  25   }
  26
  27   if (ppdev->DriverFunctions.DescribePixelFormat)
  28   {
  29      Ret = ppdev->DriverFunctions.DescribePixelFormat(
  30                                                 ppdev->dhpdev,
  31                                                 1,
  32                                                 0,
  33                                                 NULL);
  34   }
  35
  36   if (Ret) pdc->ipfdDevMax = Ret;
  37
  38   return Ret;
  39 }
  40
  41  _Success_(return != 0)
  42 INT
  43 APIENTRY
  44 NtGdiDescribePixelFormat(
  45     _In_ HDC hdc,
  46     _In_ INT ipfd,
  47     _In_ UINT cjpfd,
  48     _When_(cjpfd != 0, _Out_) PPIXELFORMATDESCRIPTOR ppfd)
  49 {
  50   PDC pdc;
  51   PPDEVOBJ ppdev;
  52   INT Ret = 0;
  53   PIXELFORMATDESCRIPTOR pfdSafe;
  54
  55   if ((ppfd == NULL) && (cjpfd != 0)) return 0;
  56
  57   pdc = DC_LockDc(hdc);
  58   if (!pdc)
  59   {
  60      EngSetLastError(ERROR_INVALID_HANDLE);
  61      return 0;
  62   }
  63
  64   if (!pdc->ipfdDevMax) IntGetipfdDevMax(pdc);
  65
  66   if ((ipfd < 1) || (ipfd > pdc->ipfdDevMax))
  67   {
  68      EngSetLastError(ERROR_INVALID_PARAMETER);
  69      goto Exit;
  70   }
  71
  72   ppdev = pdc->ppdev;
  73
  74   if (ppdev->flFlags & PDEV_META_DEVICE)
  75   {
  76      UNIMPLEMENTED;
  77      goto Exit;
  78   }
  79
  80   if (ppdev->DriverFunctions.DescribePixelFormat)
  81   {
  82      Ret = ppdev->DriverFunctions.DescribePixelFormat(
  83                                                 ppdev->dhpdev,
  84                                                 ipfd,
  85                                                 sizeof(pfdSafe),
  86                                                 &pfdSafe);
  87   }
  88
  89   if (Ret && cjpfd)
  90   {
  91       _SEH2_TRY
  92       {
  93          cjpfd = min(cjpfd, sizeof(PIXELFORMATDESCRIPTOR));
  94          ProbeForWrite(ppfd, cjpfd, 1);
  95          RtlCopyMemory(ppfd, &pfdSafe, cjpfd);
  96       }
  97       _SEH2_EXCEPT(EXCEPTION_EXECUTE_HANDLER)
  98       {
  99          SetLastNtError(_SEH2_GetExceptionCode());
 100       }
 101       _SEH2_END;
 102   }
 103
 104 Exit:
 105   DC_UnlockDc(pdc);
 106   return Ret;
 107 }
 108
 109
 110 BOOL
 111 APIENTRY
 112 NtGdiSetPixelFormat(
 113     IN HDC hdc,
 114     IN INT ipfd)
 115 {
 116   PDC pdc;
 117   PPDEVOBJ ppdev;
 118   HWND hWnd;
 119   PWNDOBJ pWndObj;
 120   SURFOBJ *pso = NULL;
 121   BOOL Ret = FALSE;
 122
 123   pdc = DC_LockDc(hdc);
 124   if (!pdc)
 125   {
 126      EngSetLastError(ERROR_INVALID_HANDLE);
 127      return FALSE;
 128   }
 129
 130   if (!pdc->ipfdDevMax) IntGetipfdDevMax(pdc);
 131
 132   if ( ipfd < 1 ||
 133        ipfd > pdc->ipfdDevMax )
 134   {
 135      EngSetLastError(ERROR_INVALID_PARAMETER);
 136      goto Exit;
 137   }
 138
 139   UserEnterExclusive();
 140   hWnd = UserGethWnd(hdc, &pWndObj);
 141   UserLeave();
 142
 143   if (!hWnd)
 144   {
 145      EngSetLastError(ERROR_INVALID_WINDOW_STYLE);
 146      goto Exit;
 147   }
 148
 149   ppdev = pdc->ppdev;
 150
 151   /*
 152       WndObj is needed so exit on NULL pointer.
 153    */
 154   if (pWndObj) pso = pWndObj->psoOwner;
 155   else
 156   {
 157      EngSetLastError(ERROR_INVALID_PIXEL_FORMAT);
 158      goto Exit;
 159   }
 160
 161   if (ppdev->flFlags & PDEV_META_DEVICE)
 162   {
 163      UNIMPLEMENTED;
 164      goto Exit;
 165   }
 166
 167   if (ppdev->DriverFunctions.SetPixelFormat)
 168   {
 169      Ret = ppdev->DriverFunctions.SetPixelFormat(
 170                                                 pso,
 171                                                 ipfd,
 172                                                 hWnd);
 173   }
 174
 175 Exit:
 176   DC_UnlockDc(pdc);
 177   return Ret;
 178 }
 179
 180 BOOL
 181 APIENTRY
 182 NtGdiSwapBuffers(HDC  hDC)
 183 {
 184   UNIMPLEMENTED;
 185   return FALSE;
 186 }
 187
 188 /* EOF */