Initial revision

1 files changed, 1158 insertions, 0 deletions

diff --git a/hw/xwin/winshadgdi.c b/hw/xwin/winshadgdi.c
new file mode 100644
index 000000000..d2f72f20d
--- /dev/null
+++ b/hw/xwin/winshadgdi.c
@@ -0,0 +1,1158 @@
+/*
+ *Copyright (C) 1994-2000 The XFree86 Project, Inc. All Rights Reserved.
+ *
+ *Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ *"Software"), to deal in the Software without restriction, including
+ *without limitation the rights to use, copy, modify, merge, publish,
+ *distribute, sublicense, and/or sell copies of the Software, and to
+ *permit persons to whom the Software is furnished to do so, subject to
+ *the following conditions:
+ *
+ *The above copyright notice and this permission notice shall be
+ *included in all copies or substantial portions of the Software.
+ *
+ *THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ *EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ *MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+ *NONINFRINGEMENT. IN NO EVENT SHALL THE XFREE86 PROJECT BE LIABLE FOR
+ *ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF
+ *CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+ *WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ *Except as contained in this notice, the name of the XFree86 Project
+ *shall not be used in advertising or otherwise to promote the sale, use
+ *or other dealings in this Software without prior written authorization
+ *from the XFree86 Project.
+ *
+ * Authors:	Harold L Hunt II
+ */
+/* $XFree86: xc/programs/Xserver/hw/xwin/winshadgdi.c,v 1.22 2003/02/12 15:01:38 alanh Exp $ */
+
+#include "win.h"
+
+/*
+ * Local function prototypes
+ */
+
+BOOL CALLBACK
+winRedrawAllProcShadowGDI (HWND hwnd, LPARAM lParam);
+
+
+/*
+ * Internal function to get the DIB format that is compatible with the screen
+ */
+
+static
+Bool
+winQueryScreenDIBFormat (ScreenPtr pScreen, BITMAPINFOHEADER *pbmih)
+{
+  winScreenPriv(pScreen);
+  HBITMAP		hbmp;
+#if CYGDEBUG
+  LPDWORD		pdw = NULL;
+#endif
+  
+  /* Create a memory bitmap compatible with the screen */
+  hbmp = CreateCompatibleBitmap (pScreenPriv->hdcScreen, 1, 1);
+  if (hbmp == NULL)
+    {
+      ErrorF ("winQueryScreenDIBFormat - CreateCompatibleBitmap failed\n");
+      return FALSE;
+    }
+  
+  /* Initialize our bitmap info header */
+  ZeroMemory (pbmih, sizeof (BITMAPINFOHEADER) + 256 * sizeof (RGBQUAD));
+  pbmih->biSize = sizeof (BITMAPINFOHEADER);
+
+  /* Get the biBitCount */
+  if (!GetDIBits (pScreenPriv->hdcScreen,
+		  hbmp,
+		  0, 1,
+		  NULL,
+		  (BITMAPINFO*) pbmih,
+		  DIB_RGB_COLORS))
+    {
+      ErrorF ("winQueryScreenDIBFormat - First call to GetDIBits failed\n");
+      DeleteObject (hbmp);
+      return FALSE;
+    }
+
+#if CYGDEBUG
+  /* Get a pointer to bitfields */
+  pdw = (DWORD*) ((CARD8*)pbmih + sizeof (BITMAPINFOHEADER));
+
+  ErrorF ("winQueryScreenDIBFormat - First call masks: %08x %08x %08x\n",
+	  pdw[0], pdw[1], pdw[2]);
+#endif
+
+  /* Get optimal color table, or the optimal bitfields */
+  if (!GetDIBits (pScreenPriv->hdcScreen,
+		  hbmp,
+		  0, 1,
+		  NULL,
+		  (BITMAPINFO*)pbmih,
+		  DIB_RGB_COLORS))
+    {
+      ErrorF ("winQueryScreenDIBFormat - Second call to GetDIBits "
+	      "failed\n");
+      DeleteObject (hbmp);
+      return FALSE;
+    }
+
+  /* Free memory */
+  DeleteObject (hbmp);
+  
+  return TRUE;
+}
+
+
+/*
+ * Internal function to determine the GDI bits per rgb and bit masks
+ */
+
+static
+Bool
+winQueryRGBBitsAndMasks (ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  BITMAPINFOHEADER	*pbmih = NULL;
+  Bool			fReturn = TRUE;
+  LPDWORD		pdw = NULL;
+  DWORD			dwRedBits, dwGreenBits, dwBlueBits;
+
+  /* Color masks for 8 bpp are standardized */
+  if (GetDeviceCaps (pScreenPriv->hdcScreen, RASTERCAPS) & RC_PALETTE)
+    {
+      /* 
+       * RGB BPP for 8 bit palletes is always 8
+       * and the color masks are always 0.
+       */
+      pScreenPriv->dwBitsPerRGB = 8;
+      pScreenPriv->dwRedMask = 0x0L;
+      pScreenPriv->dwGreenMask = 0x0L;
+      pScreenPriv->dwBlueMask = 0x0L;
+      return TRUE;
+    }
+
+  /* Color masks for 24 bpp are standardized */
+  if (GetDeviceCaps (pScreenPriv->hdcScreen, PLANES)
+      * GetDeviceCaps (pScreenPriv->hdcScreen, BITSPIXEL) == 24)
+    {
+      ErrorF ("winQueryRGBBitsAndMasks - GetDeviceCaps (BITSPIXEL) "
+	      "returned 24 for the screen.  Using default 24bpp masks.\n");
+
+      /* 8 bits per primary color */
+      pScreenPriv->dwBitsPerRGB = 8;
+
+      /* Set screen privates masks */
+      pScreenPriv->dwRedMask = WIN_24BPP_MASK_RED;
+      pScreenPriv->dwGreenMask = WIN_24BPP_MASK_GREEN;
+      pScreenPriv->dwBlueMask = WIN_24BPP_MASK_BLUE;
+      
+      return TRUE;
+    }
+
+  /* Allocate a bitmap header and color table */
+  pbmih = (BITMAPINFOHEADER*) malloc (sizeof (BITMAPINFOHEADER)
+				      + 256  * sizeof (RGBQUAD));
+  if (pbmih == NULL)
+    {
+      ErrorF ("winQueryRGBBitsAndMasks - malloc failed\n");
+      return FALSE;
+    }
+
+  /* Get screen description */
+  if (winQueryScreenDIBFormat (pScreen, pbmih))
+    {
+      /* Get a pointer to bitfields */
+      pdw = (DWORD*) ((CARD8*)pbmih + sizeof (BITMAPINFOHEADER));
+      
+#if CYGDEBUG
+      ErrorF ("winQueryRGBBitsAndMasks - Masks: %08x %08x %08x\n",
+	      pdw[0], pdw[1], pdw[2]);
+#endif
+
+      /* Count the number of bits in each mask */
+      dwRedBits = winCountBits (pdw[0]);
+      dwGreenBits = winCountBits (pdw[1]);
+      dwBlueBits = winCountBits (pdw[2]);
+
+      /* Find maximum bits per red, green, blue */
+      if (dwRedBits > dwGreenBits && dwRedBits > dwBlueBits)
+	pScreenPriv->dwBitsPerRGB = dwRedBits;
+      else if (dwGreenBits > dwRedBits && dwGreenBits > dwBlueBits)
+	pScreenPriv->dwBitsPerRGB = dwGreenBits;
+      else
+	pScreenPriv->dwBitsPerRGB = dwBlueBits;
+
+      /* Set screen privates masks */
+      pScreenPriv->dwRedMask = pdw[0];
+      pScreenPriv->dwGreenMask = pdw[1];
+      pScreenPriv->dwBlueMask = pdw[2];
+    }
+  else
+    {
+      ErrorF ("winQueryRGBBitsAndMasks - winQueryScreenDIBFormat failed\n");
+      free (pbmih);
+      fReturn = FALSE;
+    }
+
+  /* Free memory */
+  free (pbmih);
+
+  return fReturn;
+}
+
+
+/*
+ * Redraw all ---?
+ */
+
+BOOL CALLBACK
+winRedrawAllProcShadowGDI (HWND hwnd, LPARAM lParam)
+{
+  char strClassName[100];
+
+  if (GetClassName (hwnd, strClassName, 100))
+    {
+      if(strcmp (WINDOW_CLASS_X, strClassName) == 0)
+	{
+	  InvalidateRect (hwnd, NULL, FALSE);
+	  UpdateWindow (hwnd);
+	}
+    }
+  return TRUE;
+}
+
+
+/*
+ * Allocate a DIB for the shadow framebuffer GDI server
+ */
+
+Bool
+winAllocateFBShadowGDI (ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+  BITMAPINFOHEADER	*pbmih = NULL;
+  DIBSECTION		dibsection;
+  Bool			fReturn = TRUE;
+
+  /* Get device contexts for the screen and shadow bitmap */
+  pScreenPriv->hdcScreen = GetDC (pScreenPriv->hwndScreen);
+  pScreenPriv->hdcShadow = CreateCompatibleDC (pScreenPriv->hdcScreen);
+
+  /* Allocate bitmap info header */
+  pbmih = (BITMAPINFOHEADER*) malloc (sizeof (BITMAPINFOHEADER)
+				      + 256 * sizeof (RGBQUAD));
+  if (pbmih == NULL)
+    {
+      ErrorF ("winAllocateFBShadowGDI - malloc () failed\n");
+      return FALSE;
+    }
+
+  /* Query the screen format */
+  fReturn = winQueryScreenDIBFormat (pScreen, pbmih);
+
+  /* Describe shadow bitmap to be created */
+  pbmih->biWidth = pScreenInfo->dwWidth;
+  pbmih->biHeight = -pScreenInfo->dwHeight;
+  
+  ErrorF ("winAllocateFBShadowGDI - Creating DIB with width: %d height: %d "
+	  "depth: %d\n",
+	  pbmih->biWidth, -pbmih->biHeight, pbmih->biBitCount);
+
+  /* Create a DI shadow bitmap with a bit pointer */
+  pScreenPriv->hbmpShadow = CreateDIBSection (pScreenPriv->hdcScreen,
+					      (BITMAPINFO *) pbmih,
+					      DIB_RGB_COLORS,
+					      (VOID**) &pScreenInfo->pfb,
+					      NULL,
+					      0);
+  if (pScreenPriv->hbmpShadow == NULL || pScreenInfo->pfb == NULL)
+    {
+      ErrorF ("winAllocateFBShadowGDI - CreateDIBSection failed\n");
+      return FALSE;
+    }
+  else
+    {
+#if CYGDEBUG
+      ErrorF ("winAllocateFBShadowGDI - Shadow buffer allocated\n");
+#endif
+    }
+
+  /* Get information about the bitmap that was allocated */
+  GetObject (pScreenPriv->hbmpShadow,
+	     sizeof (dibsection),
+	     &dibsection);
+
+#if CYGDEBUG || YES
+  /* Print information about bitmap allocated */
+  ErrorF ("winAllocateFBShadowGDI - Dibsection width: %d height: %d "
+	  "depth: %d size image: %d\n",
+	  dibsection.dsBmih.biWidth, dibsection.dsBmih.biHeight,
+	  dibsection.dsBmih.biBitCount,
+	  dibsection.dsBmih.biSizeImage);
+#endif
+
+  /* Select the shadow bitmap into the shadow DC */
+  SelectObject (pScreenPriv->hdcShadow,
+		pScreenPriv->hbmpShadow);
+
+#if CYGDEBUG
+  ErrorF ("winAllocateFBShadowGDI - Attempting a shadow blit\n");
+#endif
+
+  /* Do a test blit from the shadow to the screen, I think */
+  fReturn = BitBlt (pScreenPriv->hdcScreen,
+		    0, 0,
+		    pScreenInfo->dwWidth, pScreenInfo->dwHeight,
+		    pScreenPriv->hdcShadow,
+		    0, 0,
+		    SRCCOPY);
+  if (fReturn)
+    {
+#if CYGDEBUG
+      ErrorF ("winAllocateFBShadowGDI - Shadow blit success\n");
+#endif
+    }
+  else
+    {
+      ErrorF ("winAllocateFBShadowGDI - Shadow blit failure\n");
+      return FALSE;
+    }
+
+  /* Set screeninfo stride */
+  pScreenInfo->dwStride = ((dibsection.dsBmih.biSizeImage
+			    / dibsection.dsBmih.biHeight)
+			   * 8) / pScreenInfo->dwBPP;
+
+#if CYGDEBUG || YES
+  ErrorF ("winAllocateFBShadowGDI - Created shadow stride: %d\n",
+	  pScreenInfo->dwStride);
+#endif
+
+  /* See if the shadow bitmap will be larger than the DIB size limit */
+  if (pScreenInfo->dwWidth * pScreenInfo->dwHeight * pScreenInfo->dwBPP
+      >= WIN_DIB_MAXIMUM_SIZE)
+    {
+      ErrorF ("winAllocateFBShadowGDI - Requested DIB (bitmap) "
+	      "will be larger than %d MB.  The surface may fail to be "
+	      "allocated on Windows 95, 98, or Me, due to a %d MB limit in "
+	      "DIB size.  This limit does not apply to Windows NT/2000, and "
+	      "this message may be ignored on those platforms.\n",
+	      WIN_DIB_MAXIMUM_SIZE_MB, WIN_DIB_MAXIMUM_SIZE_MB);
+    }
+
+  /* Determine our color masks */
+  if (!winQueryRGBBitsAndMasks (pScreen))
+    {
+      ErrorF ("winAllocateFBShadowGDI - winQueryRGBBitsAndMasks failed\n");
+      return FALSE;
+    }
+
+  /* Redraw all windows */
+  if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
+
+  return fReturn;
+}
+
+
+/*
+ * Blit the damaged regions of the shadow fb to the screen
+ */
+
+void
+winShadowUpdateGDI (ScreenPtr pScreen, 
+		    shadowBufPtr pBuf)
+{
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+  RegionPtr		damage = &pBuf->damage;
+  DWORD			dwBox = REGION_NUM_RECTS (damage);
+  BoxPtr		pBox = REGION_RECTS (damage);
+  int			x, y, w, h;
+  HRGN			hrgnTemp = NULL, hrgnCombined = NULL;
+#if WIN_UPDATE_STATS
+  static DWORD		s_dwNonUnitRegions = 0;
+  static DWORD		s_dwTotalUpdates = 0;
+  static DWORD		s_dwTotalBoxes = 0;
+#endif
+
+  /*
+   * Return immediately if the app is not active
+   * and we are fullscreen, or if we have a bad display depth
+   */
+  if ((!pScreenPriv->fActive && pScreenInfo->fFullScreen)
+      || pScreenPriv->fBadDepth) return;
+
+#if WIN_UPDATE_STATS
+  ++s_dwTotalUpdates;
+  s_dwTotalBoxes += dwBox;
+
+  if (dwBox != 1)
+    {
+      ++s_dwNonUnitRegions;
+      ErrorF ("winShadowUpdatGDI - dwBox: %d\n", dwBox);
+    }
+  
+  if ((s_dwTotalUpdates % 100) == 0)
+    ErrorF ("winShadowUpdateGDI - %d%% non-unity regions, avg boxes: %d "
+	    "nu: %d tu: %d\n",
+	    (s_dwNonUnitRegions * 100) / s_dwTotalUpdates,
+	    s_dwTotalBoxes / s_dwTotalUpdates,
+	    s_dwNonUnitRegions, s_dwTotalUpdates);
+#endif /* WIN_UPDATE_STATS */
+
+  /*
+   * Handle small regions with multiple blits,
+   * handle large regions by creating a clipping region and 
+   * doing a single blit constrained to that clipping region.
+   */
+  if (pScreenInfo->dwClipUpdatesNBoxes == 0
+      || dwBox < pScreenInfo->dwClipUpdatesNBoxes)
+    {
+      /* Loop through all boxes in the damaged region */
+      while (dwBox--)
+	{
+	  /*
+	   * Calculate x offset, y offset, width, and height for
+	   * current damage box
+	   */
+	  x = pBox->x1;
+	  y = pBox->y1;
+	  w = pBox->x2 - pBox->x1;
+	  h = pBox->y2 - pBox->y1;
+	  
+	  BitBlt (pScreenPriv->hdcScreen,
+		  x, y,
+		  w, h,
+		  pScreenPriv->hdcShadow,
+		  x, y,
+		  SRCCOPY);
+	  
+	  /* Get a pointer to the next box */
+	  ++pBox;
+	}
+    }
+  else
+    {
+      BoxPtr		pBoxExtents = REGION_EXTENTS (pScreen, damage);
+
+      /* Compute a GDI region from the damaged region */
+      hrgnCombined = CreateRectRgn (pBox->x1, pBox->y1, pBox->x2, pBox->y2);
+      dwBox--;
+      pBox++;
+      while (dwBox--)
+	{
+	  hrgnTemp = CreateRectRgn (pBox->x1, pBox->y1, pBox->x2, pBox->y2);
+	  CombineRgn (hrgnCombined, hrgnCombined, hrgnTemp, RGN_OR);
+	  DeleteObject (hrgnTemp);
+	  pBox++;
+	}
+      
+      /* Install the GDI region as a clipping region */
+      SelectClipRgn (pScreenPriv->hdcScreen, hrgnCombined);
+      DeleteObject (hrgnCombined);
+      hrgnCombined = NULL;
+      
+      /*
+       * Blit the shadow buffer to the screen,
+       * constrained to the clipping region.
+       */
+      BitBlt (pScreenPriv->hdcScreen,
+	      pBoxExtents->x1, pBoxExtents->y1,
+	      pBoxExtents->x2 - pBoxExtents->x1,
+	      pBoxExtents->y2 - pBoxExtents->y1,
+	      pScreenPriv->hdcShadow,
+	      pBoxExtents->x1, pBoxExtents->y1,
+	      SRCCOPY);
+
+      /* Reset the clip region */
+      SelectClipRgn (pScreenPriv->hdcScreen, NULL);
+    }
+
+  /* Redraw all windows */
+  if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
+}
+
+
+/* See Porting Layer Definition - p. 33 */
+/*
+ * We wrap whatever CloseScreen procedure was specified by fb;
+ * a pointer to said procedure is stored in our privates.
+ */
+
+Bool
+winCloseScreenShadowGDI (int nIndex, ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+  Bool			fReturn;
+
+#if CYGDEBUG
+  ErrorF ("winCloseScreenShadowGDI - Freeing screen resources\n");
+#endif
+
+  /* Flag that the screen is closed */
+  pScreenPriv->fClosed = TRUE;
+  pScreenPriv->fActive = FALSE;
+
+  /* Call the wrapped CloseScreen procedure */
+  pScreen->CloseScreen = pScreenPriv->CloseScreen;
+  fReturn = (*pScreen->CloseScreen) (nIndex, pScreen);
+
+  /* Delete the window property */
+  RemoveProp (pScreenPriv->hwndScreen, WIN_SCR_PROP);
+
+  /* Free the shadow DC; which allows the bitmap to be freed */
+  DeleteDC (pScreenPriv->hdcShadow);
+  
+  /* Free the shadow bitmap */
+  DeleteObject (pScreenPriv->hbmpShadow);
+
+  /* Free the screen DC */
+  ReleaseDC (pScreenPriv->hwndScreen, pScreenPriv->hdcScreen);
+
+  /* Kill our window */
+  if (pScreenPriv->hwndScreen)
+    {
+      DestroyWindow (pScreenPriv->hwndScreen);
+      pScreenPriv->hwndScreen = NULL;
+    }
+
+  /* Destroy the thread startup mutex */
+  pthread_mutex_destroy (&pScreenPriv->pmServerStarted);
+
+  /* Invalidate our screeninfo's pointer to the screen */
+  pScreenInfo->pScreen = NULL;
+
+  /* Invalidate the ScreenInfo's fb pointer */
+  pScreenInfo->pfb = NULL;
+
+  /* Free the screen privates for this screen */
+  free ((pointer) pScreenPriv);
+
+  return fReturn;
+}
+
+
+/*
+ * Tell mi what sort of visuals we need.
+ * 
+ * Generally we only need one visual, as our screen can only
+ * handle one format at a time, I believe.  You may want
+ * to verify that last sentence.
+ */
+
+Bool
+winInitVisualsShadowGDI (ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+
+  /* Display debugging information */
+  ErrorF ("winInitVisualsShadowGDI - Masks %08x %08x %08x BPRGB %d d %d "
+	  "bpp %d\n",
+	  pScreenPriv->dwRedMask,
+	  pScreenPriv->dwGreenMask,
+	  pScreenPriv->dwBlueMask,
+	  pScreenPriv->dwBitsPerRGB,
+	  pScreenInfo->dwDepth,
+	  pScreenInfo->dwBPP);
+
+  /* Create a single visual according to the Windows screen depth */
+  switch (pScreenInfo->dwDepth)
+    {
+    case 24:
+    case 16:
+    case 15:
+#if defined(XFree86Server)
+      /* Setup the real visual */
+      if (!miSetVisualTypesAndMasks (pScreenInfo->dwDepth,
+				     TrueColorMask,
+				     pScreenPriv->dwBitsPerRGB,
+				     -1,
+				     pScreenPriv->dwRedMask,
+				     pScreenPriv->dwGreenMask,
+				     pScreenPriv->dwBlueMask))
+	{
+	  ErrorF ("winInitVisualsShadowGDI - miSetVisualTypesAndMasks "
+		  "failed\n");
+	  return FALSE;
+	}
+
+#if WIN_EMULATE_PSEUDO_SUPPORT
+      if (!pScreenInfo->fEmulatePseudo)
+	break;
+
+      /* Setup a pseudocolor visual */
+      if (!miSetVisualTypesAndMasks (8,
+				     PseudoColorMask,
+				     8,
+				     -1,
+				     0,
+				     0,
+				     0))
+	{
+	  ErrorF ("winInitVisualsShadowGDI - miSetVisualTypesAndMasks "
+		  "failed for PseudoColor\n");
+	  return FALSE;
+	}
+#endif
+#else /* XFree86Server */
+      /* Setup the real visual */
+      if (!fbSetVisualTypesAndMasks (pScreenInfo->dwDepth,
+				     TrueColorMask,
+				     pScreenPriv->dwBitsPerRGB,
+				     pScreenPriv->dwRedMask,
+				     pScreenPriv->dwGreenMask,
+				     pScreenPriv->dwBlueMask))
+	{
+	  ErrorF ("winInitVisualsShadowGDI - fbSetVisualTypesAndMasks "
+		  "failed for TrueColor\n");
+	  return FALSE;
+	}
+
+#if WIN_EMULATE_PSEUDO_SUPPORT
+      if (!pScreenInfo->fEmulatePseudo)
+	break;
+
+      /* Setup a pseudocolor visual */
+      if (!fbSetVisualTypesAndMasks (8,
+				     PseudoColorMask,
+				     8,
+				     0,
+				     0,
+				     0))
+	{
+	  ErrorF ("winInitVisualsShadowGDI - fbSetVisualTypesAndMasks "
+		  "failed for PseudoColor\n");
+	  return FALSE;
+	}
+#endif
+#endif /* XFree86Server */
+      break;
+
+    case 8:
+#if defined(XFree86Server)
+      if (!miSetVisualTypesAndMasks (pScreenInfo->dwDepth,
+				     PseudoColorMask,
+				     pScreenPriv->dwBitsPerRGB,
+				     PseudoColor,
+				     pScreenPriv->dwRedMask,
+				     pScreenPriv->dwGreenMask,
+				     pScreenPriv->dwBlueMask))
+	{
+	  ErrorF ("winInitVisualsShadowGDI - miSetVisualTypesAndMasks "
+		  "failed\n");
+	  return FALSE;
+	}
+#else /* XFree86Server */
+      if (!fbSetVisualTypesAndMasks (pScreenInfo->dwDepth,
+				     PseudoColorMask,
+				     pScreenPriv->dwBitsPerRGB,
+				     pScreenPriv->dwRedMask,
+				     pScreenPriv->dwGreenMask,
+				     pScreenPriv->dwBlueMask))
+	{
+	  ErrorF ("winInitVisualsShadowGDI - fbSetVisualTypesAndMasks "
+		  "failed\n");
+	  return FALSE;
+	}
+#endif
+      break;
+
+    default:
+      ErrorF ("winInitVisualsShadowGDI - Unknown screen depth\n");
+      return FALSE;
+    }
+
+#if CYGDEBUG
+  ErrorF ("winInitVisualsShadowGDI - Returning\n");
+#endif
+
+  return TRUE;
+}
+
+
+/*
+ * Adjust the proposed video mode
+ */
+
+Bool
+winAdjustVideoModeShadowGDI (ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+  HDC			hdc;
+  DWORD			dwBPP;
+  
+  hdc = GetDC (NULL);
+
+  /* We're in serious trouble if we can't get a DC */
+  if (hdc == NULL)
+    {
+      ErrorF ("winAdjustVideoModeShadowGDI - GetDC () failed\n");
+      return FALSE;
+    }
+
+  /* Query GDI for current display depth */
+  dwBPP = GetDeviceCaps (hdc, BITSPIXEL);
+
+  /* GDI cannot change the screen depth */
+  if (pScreenInfo->dwBPP == WIN_DEFAULT_BPP)
+    {
+      /* No -depth parameter passed, let the user know the depth being used */
+      ErrorF ("winAdjustVideoModeShadowGDI - Using Windows display "
+	      "depth of %d bits per pixel\n", dwBPP);
+
+      /* Use GDI's depth */
+      pScreenInfo->dwBPP = dwBPP;
+    }
+  else if (dwBPP != pScreenInfo->dwBPP)
+    {
+      /* Warn user if GDI depth is different than -depth parameter */
+      ErrorF ("winAdjustVideoModeShadowGDI - Command line bpp: %d, "\
+	      "using bpp: %d\n", pScreenInfo->dwBPP, dwBPP);
+
+      /* We'll use GDI's depth */
+      pScreenInfo->dwBPP = dwBPP;
+    }
+  
+  /* Release our DC */
+  ReleaseDC (NULL, hdc);
+  hdc = NULL;
+
+  return TRUE;
+}
+
+
+/*
+ * Blt exposed regions to the screen
+ */
+
+Bool
+winBltExposedRegionsShadowGDI (ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+  winPrivCmapPtr	pCmapPriv = NULL;
+  HDC			hdcUpdate;
+  PAINTSTRUCT		ps;
+
+  /* BeginPaint gives us an hdc that clips to the invalidated region */
+  hdcUpdate = BeginPaint (pScreenPriv->hwndScreen, &ps);
+
+  /* Realize the palette, if we have one */
+  if (pScreenPriv->pcmapInstalled != NULL)
+    {
+      pCmapPriv = winGetCmapPriv (pScreenPriv->pcmapInstalled);
+      
+      SelectPalette (hdcUpdate, pCmapPriv->hPalette, FALSE);
+      RealizePalette (hdcUpdate);
+    }
+
+  /* Our BitBlt will be clipped to the invalidated region */
+  BitBlt (hdcUpdate,
+	  0, 0,
+	  pScreenInfo->dwWidth, pScreenInfo->dwHeight,
+	  pScreenPriv->hdcShadow,
+	  0, 0,
+	  SRCCOPY);
+
+  /* EndPaint frees the DC */
+  EndPaint (pScreenPriv->hwndScreen, &ps);
+
+  /* Redraw all windows */
+  if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
+
+  return TRUE;
+}
+
+
+/*
+ * Do any engine-specific appliation-activation processing
+ */
+
+Bool
+winActivateAppShadowGDI (ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+
+#if CYGDEBUG
+  ErrorF ("winActivateAppShadowGDI\n");
+#endif
+
+  /*
+   * Are we active?
+   * Are we fullscreen?
+   */
+  if (pScreenPriv->fActive
+      && pScreenInfo->fFullScreen)
+    {
+      /*
+       * Activating, attempt to bring our window 
+       * to the top of the display
+       */
+      ShowWindow (pScreenPriv->hwndScreen, SW_RESTORE);
+    }
+  else if (!pScreenPriv->fActive
+	   && pScreenInfo->fFullScreen)
+    {
+      /*
+       * Deactivating, stuff our window onto the
+       * task bar.
+       */
+      ShowWindow (pScreenPriv->hwndScreen, SW_MINIMIZE);
+    }
+
+#if CYGDEBUG
+  ErrorF ("winActivateAppShadowGDI - Returning\n");
+#endif
+
+  return TRUE;
+}
+
+
+/*
+ * Reblit the shadow framebuffer to the screen.
+ */
+
+Bool
+winRedrawScreenShadowGDI (ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+
+  /* Redraw the whole window, to take account for the new colors */
+  BitBlt (pScreenPriv->hdcScreen,
+	  0, 0,
+	  pScreenInfo->dwWidth, pScreenInfo->dwHeight,
+	  pScreenPriv->hdcShadow,
+	  0, 0,
+	  SRCCOPY);
+
+  /* Redraw all windows */
+  if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
+  return TRUE;
+}
+
+
+/*
+ * Realize the currently installed colormap
+ */
+
+Bool
+winRealizeInstalledPaletteShadowGDI (ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  winPrivCmapPtr	pCmapPriv = NULL;
+
+#if CYGDEBUG
+  ErrorF ("winRealizeInstalledPaletteShadowGDI\n");
+#endif
+
+  /* Don't do anything if there is not a colormap */
+  if (pScreenPriv->pcmapInstalled == NULL)
+    {
+#if CYGDEBUG
+      ErrorF ("winRealizeInstalledPaletteShadowGDI - No colormap "
+	      "installed\n");
+#endif
+      return TRUE;
+    }
+
+  pCmapPriv = winGetCmapPriv (pScreenPriv->pcmapInstalled);
+  
+  /* Realize our palette for the screen */
+  if (RealizePalette (pScreenPriv->hdcScreen) == GDI_ERROR)
+    {
+      ErrorF ("winRealizeInstalledPaletteShadowGDI - RealizePalette () "
+	      "failed\n");
+      return FALSE;
+    }
+  
+  /* Set the DIB color table */
+  if (SetDIBColorTable (pScreenPriv->hdcShadow,
+			0,
+			WIN_NUM_PALETTE_ENTRIES,
+			pCmapPriv->rgbColors) == 0)
+    {
+      ErrorF ("winRealizeInstalledPaletteShadowGDI - SetDIBColorTable () "
+	      "failed\n");
+      return FALSE;
+    }
+  
+  return TRUE;
+}
+
+
+/*
+ * Install the specified colormap
+ */
+
+Bool
+winInstallColormapShadowGDI (ColormapPtr pColormap)
+{
+  ScreenPtr		pScreen = pColormap->pScreen;
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+  winCmapPriv(pColormap);
+
+  /*
+   * Tell Windows to install the new colormap
+   */
+  if (SelectPalette (pScreenPriv->hdcScreen,
+		     pCmapPriv->hPalette,
+		     FALSE) == NULL)
+    {
+      ErrorF ("winInstallColormapShadowGDI - SelectPalette () failed\n");
+      return FALSE;
+    }
+      
+  /* Realize the palette */
+  if (GDI_ERROR == RealizePalette (pScreenPriv->hdcScreen))
+    {
+      ErrorF ("winInstallColormapShadowGDI - RealizePalette () failed\n");
+      return FALSE;
+    }
+
+  /* Set the DIB color table */
+  if (SetDIBColorTable (pScreenPriv->hdcShadow,
+			0,
+			WIN_NUM_PALETTE_ENTRIES,
+			pCmapPriv->rgbColors) == 0)
+    {
+      ErrorF ("winInstallColormapShadowGDI - SetDIBColorTable () failed\n");
+      return FALSE;
+    }
+
+  /* Redraw the whole window, to take account for the new colors */
+  BitBlt (pScreenPriv->hdcScreen,
+	  0, 0,
+	  pScreenInfo->dwWidth, pScreenInfo->dwHeight,
+	  pScreenPriv->hdcShadow,
+	  0, 0,
+	  SRCCOPY);
+
+  /* Save a pointer to the newly installed colormap */
+  pScreenPriv->pcmapInstalled = pColormap;
+
+  /* Redraw all windows */
+  if (pScreenInfo->fMultiWindow) EnumWindows(winRedrawAllProcShadowGDI, 0);
+
+  return TRUE;
+}
+
+
+/*
+ * Store the specified colors in the specified colormap
+ */
+
+Bool
+winStoreColorsShadowGDI (ColormapPtr pColormap,
+			 int ndef,
+			 xColorItem *pdefs)
+{
+  ScreenPtr		pScreen = pColormap->pScreen;
+  winScreenPriv(pScreen);
+  winCmapPriv(pColormap);
+  ColormapPtr curpmap = pScreenPriv->pcmapInstalled;
+  
+  /* Put the X colormap entries into the Windows logical palette */
+  if (SetPaletteEntries (pCmapPriv->hPalette,
+			 pdefs[0].pixel,
+			 ndef,
+			 pCmapPriv->peColors + pdefs[0].pixel) == 0)
+    {
+      ErrorF ("winStoreColorsShadowGDI - SetPaletteEntries () failed\n");
+      return FALSE;
+    }
+
+  /* Don't install the Windows palette if the colormap is not installed */
+  if (pColormap != curpmap)
+    {
+      return TRUE;
+    }
+
+  /* Try to install the newly modified colormap */
+  if (!winInstallColormapShadowGDI (pColormap))
+    {
+      ErrorF ("winInstallColormapShadowGDI - winInstallColormapShadowGDI "
+	      "failed\n");
+      return FALSE;
+    }
+
+#if 0
+  /* Tell Windows that the palette has changed */
+  RealizePalette (pScreenPriv->hdcScreen);
+  
+  /* Set the DIB color table */
+  if (SetDIBColorTable (pScreenPriv->hdcShadow,
+			pdefs[0].pixel,
+			ndef,
+			pCmapPriv->rgbColors + pdefs[0].pixel) == 0)
+    {
+      ErrorF ("winInstallColormapShadowGDI - SetDIBColorTable () failed\n");
+      return FALSE;
+    }
+
+  /* Save a pointer to the newly installed colormap */
+  pScreenPriv->pcmapInstalled = pColormap;
+#endif
+
+  return TRUE;
+}
+
+
+/*
+ * Colormap initialization procedure
+ */
+
+Bool
+winCreateColormapShadowGDI (ColormapPtr pColormap)
+{
+  LPLOGPALETTE		lpPaletteNew = NULL;
+  DWORD			dwEntriesMax;
+  VisualPtr		pVisual;
+  HPALETTE		hpalNew = NULL;
+  winCmapPriv(pColormap);
+
+  /* Get a pointer to the visual that the colormap belongs to */
+  pVisual = pColormap->pVisual;
+
+  /* Get the maximum number of palette entries for this visual */
+  dwEntriesMax = pVisual->ColormapEntries;
+
+  /* Allocate a Windows logical color palette with max entries */
+  lpPaletteNew = malloc (sizeof (LOGPALETTE)
+			 + (dwEntriesMax - 1) * sizeof (PALETTEENTRY));
+  if (lpPaletteNew == NULL)
+    {
+      ErrorF ("winCreateColormapShadowGDI - Couldn't allocate palette "
+	      "with %d entries\n",
+	      dwEntriesMax);
+      return FALSE;
+    }
+
+  /* Zero out the colormap */
+  ZeroMemory (lpPaletteNew, sizeof (LOGPALETTE)
+	      + (dwEntriesMax - 1) * sizeof (PALETTEENTRY));
+  
+  /* Set the logical palette structure */
+  lpPaletteNew->palVersion = 0x0300;
+  lpPaletteNew->palNumEntries = dwEntriesMax;
+
+  /* Tell Windows to create the palette */
+  hpalNew = CreatePalette (lpPaletteNew);
+  if (hpalNew == NULL)
+    {
+      ErrorF ("winCreateColormapShadowGDI - CreatePalette () failed\n");
+      free (lpPaletteNew);
+      return FALSE;
+    }
+
+  /* Save the Windows logical palette handle in the X colormaps' privates */
+  pCmapPriv->hPalette = hpalNew;
+
+  /* Free the palette initialization memory */
+  free (lpPaletteNew);
+
+  return TRUE;
+}
+
+
+/*
+ * Colormap destruction procedure
+ */
+
+Bool
+winDestroyColormapShadowGDI (ColormapPtr pColormap)
+{
+  winScreenPriv(pColormap->pScreen);
+  winCmapPriv(pColormap);
+
+  /*
+   * Is colormap to be destroyed the default?
+   *
+   * Non-default colormaps should have had winUninstallColormap
+   * called on them before we get here.  The default colormap
+   * will not have had winUninstallColormap called on it.  Thus,
+   * we need to handle the default colormap in a special way.
+   */
+  if (pColormap->flags & IsDefault)
+    {
+#if CYGDEBUG
+      ErrorF ("winDestroyColormapShadowGDI - Destroying default "
+	      "colormap\n");
+#endif
+      
+      /*
+       * FIXME: Walk the list of all screens, popping the default
+       * palette out of each screen device context.
+       */
+      
+      /* Pop the palette out of the device context */
+      SelectPalette (pScreenPriv->hdcScreen,
+		     GetStockObject (DEFAULT_PALETTE),
+		     FALSE);
+
+      /* Clear our private installed colormap pointer */
+      pScreenPriv->pcmapInstalled = NULL;
+    }
+  
+  /* Try to delete the logical palette */
+  if (DeleteObject (pCmapPriv->hPalette) == 0)
+    {
+      ErrorF ("winDestroyColormap - DeleteObject () failed\n");
+      return FALSE;
+    }
+  
+  /* Invalidate the colormap privates */
+  pCmapPriv->hPalette = NULL;
+
+  return TRUE;
+}
+
+
+/*
+ * Set engine specific funtions
+ */
+
+Bool
+winSetEngineFunctionsShadowGDI (ScreenPtr pScreen)
+{
+  winScreenPriv(pScreen);
+  winScreenInfo		*pScreenInfo = pScreenPriv->pScreenInfo;
+  
+  /* Set our pointers */
+  pScreenPriv->pwinAllocateFB = winAllocateFBShadowGDI;
+  pScreenPriv->pwinShadowUpdate = winShadowUpdateGDI;
+  pScreenPriv->pwinCloseScreen = winCloseScreenShadowGDI;
+  pScreenPriv->pwinInitVisuals = winInitVisualsShadowGDI;
+  pScreenPriv->pwinAdjustVideoMode = winAdjustVideoModeShadowGDI;
+  if (pScreenInfo->fFullScreen)
+    pScreenPriv->pwinCreateBoundingWindow = winCreateBoundingWindowFullScreen;
+  else
+    pScreenPriv->pwinCreateBoundingWindow = winCreateBoundingWindowWindowed;
+  pScreenPriv->pwinFinishScreenInit = winFinishScreenInitFB;
+  pScreenPriv->pwinBltExposedRegions = winBltExposedRegionsShadowGDI;
+  pScreenPriv->pwinActivateApp = winActivateAppShadowGDI;
+  pScreenPriv->pwinRedrawScreen = winRedrawScreenShadowGDI;
+  pScreenPriv->pwinRealizeInstalledPalette = 
+    winRealizeInstalledPaletteShadowGDI;
+  pScreenPriv->pwinInstallColormap = winInstallColormapShadowGDI;
+  pScreenPriv->pwinStoreColors = winStoreColorsShadowGDI;
+  pScreenPriv->pwinCreateColormap = winCreateColormapShadowGDI;
+  pScreenPriv->pwinDestroyColormap = winDestroyColormapShadowGDI;
+  pScreenPriv->pwinHotKeyAltTab = (winHotKeyAltTabProcPtr) (void (*)())NoopDDA;
+  pScreenPriv->pwinCreatePrimarySurface
+    = (winCreatePrimarySurfaceProcPtr) (void (*)())NoopDDA;
+  pScreenPriv->pwinReleasePrimarySurface
+    = (winReleasePrimarySurfaceProcPtr) (void (*)())NoopDDA;
+
+  return TRUE;
+}