1 files changed, 425 insertions, 425 deletions
diff --git a/xorg-server/fb/fboverlay.c b/xorg-server/fb/fboverlay.c
index 61eaaa3f9..00092bb05 100644
--- a/xorg-server/fb/fboverlay.c
+++ b/xorg-server/fb/fboverlay.c
@@ -1,425 +1,425 @@
-/*
- *
- * Copyright © 2000 SuSE, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software and its
- * documentation for any purpose is hereby granted without fee, provided that
- * the above copyright notice appear in all copies and that both that
- * copyright notice and this permission notice appear in supporting
- * documentation, and that the name of SuSE not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission.  SuSE makes no representations about the
- * suitability of this software for any purpose.  It is provided "as is"
- * without express or implied warranty.
- *
- * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
- * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
- * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
- * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 
- * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
- *
- * Author:  Keith Packard, SuSE, Inc.
- */
-
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include <stdlib.h>
-
-#include "fb.h"
-#include "fboverlay.h"
-#include "shmint.h"
-
-static DevPrivateKeyRec fbOverlayScreenPrivateKeyRec;
-#define fbOverlayScreenPrivateKey (&fbOverlayScreenPrivateKeyRec)
-
-DevPrivateKey fbOverlayGetScreenPrivateKey(void)
-{
-    return fbOverlayScreenPrivateKey;
-}
-
-/*
- * Replace this if you want something supporting
- * multiple overlays with the same depth
- */
-Bool
-fbOverlayCreateWindow(WindowPtr pWin)
-{
-    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
-    int			i;
-    PixmapPtr		pPixmap;
-    
-    if (pWin->drawable.class != InputOutput)
-	return TRUE;
-
-    if (pWin->drawable.bitsPerPixel == 32)
-	pWin->drawable.bitsPerPixel = fbGetScreenPrivate(pWin->drawable.pScreen)->win32bpp;
-
-    for (i = 0; i < pScrPriv->nlayers; i++)
-    {
-	pPixmap = pScrPriv->layer[i].u.run.pixmap;
-	if (pWin->drawable.depth == pPixmap->drawable.depth)
-	{
-	    dixSetPrivate(&pWin->devPrivates, fbGetWinPrivateKey(), pPixmap);
-	    /*
-	     * Make sure layer keys are written correctly by
-	     * having non-root layers set to full while the
-	     * root layer is set to empty.  This will cause
-	     * all of the layers to get painted when the root
-	     * is mapped
-	     */
-	    if (!pWin->parent)
-	    {
-		RegionEmpty(&pScrPriv->layer[i].u.run.region);
-	    }
-	    return TRUE;
-	}
-    }
-    return FALSE;
-}
-
-Bool
-fbOverlayCloseScreen (int iScreen, ScreenPtr pScreen)
-{
-    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
-    int			i;
-
-    for (i = 0; i < pScrPriv->nlayers; i++)
-    {
-	(*pScreen->DestroyPixmap)(pScrPriv->layer[i].u.run.pixmap);
-	RegionUninit(&pScrPriv->layer[i].u.run.region);
-    }
-    return TRUE;
-}
-
-/*
- * Return layer containing this window
- */
-int
-fbOverlayWindowLayer(WindowPtr pWin)
-{
-    FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
-    int                 i;
-
-    for (i = 0; i < pScrPriv->nlayers; i++)
-	if (dixLookupPrivate(&pWin->devPrivates, fbGetWinPrivateKey()) ==
-	    (pointer) pScrPriv->layer[i].u.run.pixmap)
-	    return i;
-    return 0;
-}
-
-Bool
-fbOverlayCreateScreenResources(ScreenPtr pScreen)
-{
-    int			i;
-    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
-    PixmapPtr		pPixmap;
-    pointer		pbits;
-    int			width;
-    int			depth;
-    BoxRec		box;
-    
-    if (!miCreateScreenResources(pScreen))
-	return FALSE;
-
-    box.x1 = 0;
-    box.y1 = 0;
-    box.x2 = pScreen->width;
-    box.y2 = pScreen->height;
-    for (i = 0; i < pScrPriv->nlayers; i++)
-    {
-	pbits = pScrPriv->layer[i].u.init.pbits;
-	width = pScrPriv->layer[i].u.init.width;
-	depth = pScrPriv->layer[i].u.init.depth;
-	pPixmap = (*pScreen->CreatePixmap)(pScreen, 0, 0, depth, 0);
-	if (!pPixmap)
-	    return FALSE;
-	if (!(*pScreen->ModifyPixmapHeader)(pPixmap, pScreen->width,
-					    pScreen->height, depth,
-					    BitsPerPixel(depth),
-					    PixmapBytePad(width, depth),
-					    pbits))
-	    return FALSE;
-	pScrPriv->layer[i].u.run.pixmap = pPixmap;
-	RegionInit(&pScrPriv->layer[i].u.run.region, &box, 0);
-    }
-    pScreen->devPrivate = pScrPriv->layer[0].u.run.pixmap;
-    return TRUE;
-}
-
-void
-fbOverlayPaintKey (DrawablePtr	pDrawable,
-		   RegionPtr	pRegion,
-		   CARD32	pixel,
-		   int		layer)
-{
-    fbFillRegionSolid (pDrawable, pRegion, 0, 
-		       fbReplicatePixel (pixel, pDrawable->bitsPerPixel));
-}
-
-/*
- * Track visible region for each layer
- */
-void
-fbOverlayUpdateLayerRegion (ScreenPtr	pScreen,
-			    int		layer,
-			    RegionPtr	prgn)
-{
-    FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pScreen);
-    int			i;
-    RegionRec		rgnNew;
-    
-    if (!prgn || !RegionNotEmpty(prgn))
-	return;
-    for (i = 0; i < pScrPriv->nlayers; i++)
-    {
-	if (i == layer)
-	{
-	    /* add new piece to this fb */
-	    RegionUnion(&pScrPriv->layer[i].u.run.region,
-			&pScrPriv->layer[i].u.run.region,
-			prgn);
-	}
-	else if (RegionNotEmpty(&pScrPriv->layer[i].u.run.region))
-	{
-	    /* paint new piece with chroma key */
-	    RegionNull(&rgnNew);
-	    RegionIntersect(&rgnNew, prgn,
-			    &pScrPriv->layer[i].u.run.region);
-	    (*pScrPriv->PaintKey) (&pScrPriv->layer[i].u.run.pixmap->drawable,
-				   &rgnNew,
-				   pScrPriv->layer[i].key,
-				   i);
-	    RegionUninit(&rgnNew);
-	    /* remove piece from other fbs */
-	    RegionSubtract(&pScrPriv->layer[i].u.run.region,
-			   &pScrPriv->layer[i].u.run.region,
-			   prgn);
-	}
-    }
-}
-
-/*
- * Copy only areas in each layer containing real bits
- */
-void
-fbOverlayCopyWindow(WindowPtr	pWin,
-		    DDXPointRec	ptOldOrg,
-		    RegionPtr	prgnSrc)
-{
-    ScreenPtr		pScreen = pWin->drawable.pScreen;
-    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
-    RegionRec		rgnDst;
-    int			dx, dy;
-    int			i;
-    RegionRec		layerRgn[FB_OVERLAY_MAX];
-    PixmapPtr		pPixmap;
-
-    dx = ptOldOrg.x - pWin->drawable.x;
-    dy = ptOldOrg.y - pWin->drawable.y;
-
-    /*
-     * Clip to existing bits
-     */
-    RegionTranslate(prgnSrc, -dx, -dy);
-    RegionNull(&rgnDst);
-    RegionIntersect(&rgnDst, &pWin->borderClip, prgnSrc);
-    RegionTranslate(&rgnDst, dx, dy);
-    /*
-     * Compute the portion of each fb affected by this copy
-     */
-    for (i = 0; i < pScrPriv->nlayers; i++)
-    {
-	RegionNull(&layerRgn[i]);
-	RegionIntersect(&layerRgn[i], &rgnDst,
-			 &pScrPriv->layer[i].u.run.region);
-	if (RegionNotEmpty(&layerRgn[i]))
-	{
-	    RegionTranslate(&layerRgn[i], -dx, -dy);
-	    pPixmap = pScrPriv->layer[i].u.run.pixmap;
-	    miCopyRegion (&pPixmap->drawable, &pPixmap->drawable,
-			  0,
-			  &layerRgn[i], dx, dy, pScrPriv->CopyWindow, 0,
-			  (void *)(long) i);
-	}
-    }
-    /*
-     * Update regions
-     */
-    for (i = 0; i < pScrPriv->nlayers; i++)
-    {
-	if (RegionNotEmpty(&layerRgn[i]))
-	    fbOverlayUpdateLayerRegion (pScreen, i, &layerRgn[i]);
-
-	RegionUninit(&layerRgn[i]);
-    }
-    RegionUninit(&rgnDst);
-}   
-
-void
-fbOverlayWindowExposures (WindowPtr	pWin,
-			  RegionPtr	prgn,
-			  RegionPtr	other_exposed)
-{
-    fbOverlayUpdateLayerRegion (pWin->drawable.pScreen,
-				fbOverlayWindowLayer (pWin),
-				prgn);
-    miWindowExposures(pWin, prgn, other_exposed);
-}
-
-Bool
-fbOverlaySetupScreen(ScreenPtr	pScreen,
-		     pointer	pbits1,
-		     pointer	pbits2,
-		     int	xsize,
-		     int	ysize,
-		     int	dpix,
-		     int	dpiy,
-		     int	width1,
-		     int	width2,
-		     int	bpp1,
-		     int	bpp2)
-{
-    return fbSetupScreen (pScreen,
-			  pbits1,
-			  xsize,
-			  ysize,
-			  dpix,
-			  dpiy,
-			  width1,
-			  bpp1);
-}
-
-static Bool
-fb24_32OverlayCreateScreenResources(ScreenPtr pScreen)
-{
-    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
-    int pitch;
-    Bool retval;
-    int i;
-
-    if((retval = fbOverlayCreateScreenResources(pScreen))) {
-	for (i = 0; i < pScrPriv->nlayers; i++)
-	{
-	    /* fix the screen pixmap */
-	    PixmapPtr pPix = (PixmapPtr) pScrPriv->layer[i].u.run.pixmap;
-	    if (pPix->drawable.bitsPerPixel == 32) {
-		pPix->drawable.bitsPerPixel = 24;
-		pitch = BitmapBytePad(pPix->drawable.width * 24);
-		pPix->devKind = pitch;
-	    }
-	}
-    }
-
-    return retval;
-}
-
-Bool
-fbOverlayFinishScreenInit(ScreenPtr	pScreen,
-			  pointer	pbits1,
-			  pointer	pbits2,
-			  int		xsize,
-			  int		ysize,
-			  int		dpix,
-			  int		dpiy,
-			  int		width1,
-			  int		width2,
-			  int		bpp1,
-			  int		bpp2,
-			  int		depth1,
-			  int		depth2)
-{
-    VisualPtr	visuals;
-    DepthPtr	depths;
-    int		nvisuals;
-    int		ndepths;
-    int		bpp = 0, imagebpp = 32;
-    VisualID	defaultVisual;
-    FbOverlayScrPrivPtr	pScrPriv;
-
-    if (!dixRegisterPrivateKey(&fbOverlayScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
-	return FALSE;
-
-    pScrPriv = malloc(sizeof (FbOverlayScrPrivRec));
-    if (!pScrPriv)
-	return FALSE;
- 
-    if (bpp1 == 32 || bpp2 == 32)
-	bpp = 32;
-    else if (bpp1 == 24 || bpp2 == 24)
-	bpp = 24;
-
-    if (bpp == 24)
-    {
-	int	f;
-	
-	imagebpp = 32;
-	/*
-	 * Check to see if we're advertising a 24bpp image format,
-	 * in which case windows will use it in preference to a 32 bit
-	 * format.
-	 */
-	for (f = 0; f < screenInfo.numPixmapFormats; f++)
-	{
-	    if (screenInfo.formats[f].bitsPerPixel == 24)
-	    {
-		imagebpp = 24;
-		break;
-	    }
-	}	    
-    }
-    if (imagebpp == 32)
-    {
-	fbGetScreenPrivate(pScreen)->win32bpp = bpp;
-	fbGetScreenPrivate(pScreen)->pix32bpp = bpp;
-    }
-    else
-    {
-	fbGetScreenPrivate(pScreen)->win32bpp = 32;
-	fbGetScreenPrivate(pScreen)->pix32bpp = 32;
-    }
-   
-    if (!fbInitVisuals (&visuals, &depths, &nvisuals, &ndepths, &depth1,
-			&defaultVisual, ((unsigned long)1<<(bpp1-1)) |
-			((unsigned long)1<<(bpp2-1)), 8))
-	return FALSE;
-    if (! miScreenInit(pScreen, 0, xsize, ysize, dpix, dpiy, 0,
-			depth1, ndepths, depths,
-			defaultVisual, nvisuals, visuals))
-	return FALSE;
-    /* MI thinks there's no frame buffer */
-#ifdef MITSHM
-    ShmRegisterFbFuncs(pScreen);
-#endif
-    pScreen->minInstalledCmaps = 1;
-    pScreen->maxInstalledCmaps = 2;
-    
-    pScrPriv->nlayers = 2;
-    pScrPriv->PaintKey = fbOverlayPaintKey;
-    pScrPriv->CopyWindow = fbCopyWindowProc;
-    pScrPriv->layer[0].u.init.pbits = pbits1;
-    pScrPriv->layer[0].u.init.width = width1;
-    pScrPriv->layer[0].u.init.depth = depth1;
-
-    pScrPriv->layer[1].u.init.pbits = pbits2;
-    pScrPriv->layer[1].u.init.width = width2;
-    pScrPriv->layer[1].u.init.depth = depth2;
-    dixSetPrivate(&pScreen->devPrivates, fbOverlayScreenPrivateKey, pScrPriv);
-    
-    /* overwrite miCloseScreen with our own */
-    pScreen->CloseScreen = fbOverlayCloseScreen;
-    pScreen->CreateScreenResources = fbOverlayCreateScreenResources;
-    pScreen->CreateWindow = fbOverlayCreateWindow;
-    pScreen->WindowExposures = fbOverlayWindowExposures;
-    pScreen->CopyWindow = fbOverlayCopyWindow;
-    if (bpp == 24 && imagebpp == 32)
-    {
-	pScreen->ModifyPixmapHeader = fb24_32ModifyPixmapHeader;
-  	pScreen->CreateScreenResources = fb24_32OverlayCreateScreenResources;
-    }
-
-    return TRUE;
-}
+/*
+ *
+ * Copyright © 2000 SuSE, Inc.
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of SuSE not be used in advertising or
+ * publicity pertaining to distribution of the software without specific,
+ * written prior permission.  SuSE makes no representations about the
+ * suitability of this software for any purpose.  It is provided "as is"
+ * without express or implied warranty.
+ *
+ * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
+ * BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
+ * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 
+ * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ *
+ * Author:  Keith Packard, SuSE, Inc.
+ */
+
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include <stdlib.h>
+
+#include "fb.h"
+#include "fboverlay.h"
+#include "shmint.h"
+
+static DevPrivateKeyRec fbOverlayScreenPrivateKeyRec;
+#define fbOverlayScreenPrivateKey (&fbOverlayScreenPrivateKeyRec)
+
+DevPrivateKey fbOverlayGetScreenPrivateKey(void)
+{
+    return fbOverlayScreenPrivateKey;
+}
+
+/*
+ * Replace this if you want something supporting
+ * multiple overlays with the same depth
+ */
+Bool
+fbOverlayCreateWindow(WindowPtr pWin)
+{
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
+    int			i;
+    PixmapPtr		pPixmap;
+    
+    if (pWin->drawable.class != InputOutput)
+	return TRUE;
+
+    if (pWin->drawable.bitsPerPixel == 32)
+	pWin->drawable.bitsPerPixel = fbGetScreenPrivate(pWin->drawable.pScreen)->win32bpp;
+
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	pPixmap = pScrPriv->layer[i].u.run.pixmap;
+	if (pWin->drawable.depth == pPixmap->drawable.depth)
+	{
+	    dixSetPrivate(&pWin->devPrivates, fbGetWinPrivateKey(), pPixmap);
+	    /*
+	     * Make sure layer keys are written correctly by
+	     * having non-root layers set to full while the
+	     * root layer is set to empty.  This will cause
+	     * all of the layers to get painted when the root
+	     * is mapped
+	     */
+	    if (!pWin->parent)
+	    {
+		RegionEmpty(&pScrPriv->layer[i].u.run.region);
+	    }
+	    return TRUE;
+	}
+    }
+    return FALSE;
+}
+
+Bool
+fbOverlayCloseScreen (int iScreen, ScreenPtr pScreen)
+{
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
+    int			i;
+
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	(*pScreen->DestroyPixmap)(pScrPriv->layer[i].u.run.pixmap);
+	RegionUninit(&pScrPriv->layer[i].u.run.region);
+    }
+    return TRUE;
+}
+
+/*
+ * Return layer containing this window
+ */
+int
+fbOverlayWindowLayer(WindowPtr pWin)
+{
+    FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pWin->drawable.pScreen);
+    int                 i;
+
+    for (i = 0; i < pScrPriv->nlayers; i++)
+	if (dixLookupPrivate(&pWin->devPrivates, fbGetWinPrivateKey()) ==
+	    (pointer) pScrPriv->layer[i].u.run.pixmap)
+	    return i;
+    return 0;
+}
+
+Bool
+fbOverlayCreateScreenResources(ScreenPtr pScreen)
+{
+    int			i;
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
+    PixmapPtr		pPixmap;
+    pointer		pbits;
+    int			width;
+    int			depth;
+    BoxRec		box;
+    
+    if (!miCreateScreenResources(pScreen))
+	return FALSE;
+
+    box.x1 = 0;
+    box.y1 = 0;
+    box.x2 = pScreen->width;
+    box.y2 = pScreen->height;
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	pbits = pScrPriv->layer[i].u.init.pbits;
+	width = pScrPriv->layer[i].u.init.width;
+	depth = pScrPriv->layer[i].u.init.depth;
+	pPixmap = (*pScreen->CreatePixmap)(pScreen, 0, 0, depth, 0);
+	if (!pPixmap)
+	    return FALSE;
+	if (!(*pScreen->ModifyPixmapHeader)(pPixmap, pScreen->width,
+					    pScreen->height, depth,
+					    BitsPerPixel(depth),
+					    PixmapBytePad(width, depth),
+					    pbits))
+	    return FALSE;
+	pScrPriv->layer[i].u.run.pixmap = pPixmap;
+	RegionInit(&pScrPriv->layer[i].u.run.region, &box, 0);
+    }
+    pScreen->devPrivate = pScrPriv->layer[0].u.run.pixmap;
+    return TRUE;
+}
+
+void
+fbOverlayPaintKey (DrawablePtr	pDrawable,
+		   RegionPtr	pRegion,
+		   CARD32	pixel,
+		   int		layer)
+{
+    fbFillRegionSolid (pDrawable, pRegion, 0, 
+		       fbReplicatePixel (pixel, pDrawable->bitsPerPixel));
+}
+
+/*
+ * Track visible region for each layer
+ */
+void
+fbOverlayUpdateLayerRegion (ScreenPtr	pScreen,
+			    int		layer,
+			    RegionPtr	prgn)
+{
+    FbOverlayScrPrivPtr pScrPriv = fbOverlayGetScrPriv(pScreen);
+    int			i;
+    RegionRec		rgnNew;
+    
+    if (!prgn || !RegionNotEmpty(prgn))
+	return;
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	if (i == layer)
+	{
+	    /* add new piece to this fb */
+	    RegionUnion(&pScrPriv->layer[i].u.run.region,
+			&pScrPriv->layer[i].u.run.region,
+			prgn);
+	}
+	else if (RegionNotEmpty(&pScrPriv->layer[i].u.run.region))
+	{
+	    /* paint new piece with chroma key */
+	    RegionNull(&rgnNew);
+	    RegionIntersect(&rgnNew, prgn,
+			    &pScrPriv->layer[i].u.run.region);
+	    (*pScrPriv->PaintKey) (&pScrPriv->layer[i].u.run.pixmap->drawable,
+				   &rgnNew,
+				   pScrPriv->layer[i].key,
+				   i);
+	    RegionUninit(&rgnNew);
+	    /* remove piece from other fbs */
+	    RegionSubtract(&pScrPriv->layer[i].u.run.region,
+			   &pScrPriv->layer[i].u.run.region,
+			   prgn);
+	}
+    }
+}
+
+/*
+ * Copy only areas in each layer containing real bits
+ */
+void
+fbOverlayCopyWindow(WindowPtr	pWin,
+		    DDXPointRec	ptOldOrg,
+		    RegionPtr	prgnSrc)
+{
+    ScreenPtr		pScreen = pWin->drawable.pScreen;
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
+    RegionRec		rgnDst;
+    int			dx, dy;
+    int			i;
+    RegionRec		layerRgn[FB_OVERLAY_MAX];
+    PixmapPtr		pPixmap;
+
+    dx = ptOldOrg.x - pWin->drawable.x;
+    dy = ptOldOrg.y - pWin->drawable.y;
+
+    /*
+     * Clip to existing bits
+     */
+    RegionTranslate(prgnSrc, -dx, -dy);
+    RegionNull(&rgnDst);
+    RegionIntersect(&rgnDst, &pWin->borderClip, prgnSrc);
+    RegionTranslate(&rgnDst, dx, dy);
+    /*
+     * Compute the portion of each fb affected by this copy
+     */
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	RegionNull(&layerRgn[i]);
+	RegionIntersect(&layerRgn[i], &rgnDst,
+			 &pScrPriv->layer[i].u.run.region);
+	if (RegionNotEmpty(&layerRgn[i]))
+	{
+	    RegionTranslate(&layerRgn[i], -dx, -dy);
+	    pPixmap = pScrPriv->layer[i].u.run.pixmap;
+	    miCopyRegion (&pPixmap->drawable, &pPixmap->drawable,
+			  0,
+			  &layerRgn[i], dx, dy, pScrPriv->CopyWindow, 0,
+			  (void *)(long) i);
+	}
+    }
+    /*
+     * Update regions
+     */
+    for (i = 0; i < pScrPriv->nlayers; i++)
+    {
+	if (RegionNotEmpty(&layerRgn[i]))
+	    fbOverlayUpdateLayerRegion (pScreen, i, &layerRgn[i]);
+
+	RegionUninit(&layerRgn[i]);
+    }
+    RegionUninit(&rgnDst);
+}   
+
+void
+fbOverlayWindowExposures (WindowPtr	pWin,
+			  RegionPtr	prgn,
+			  RegionPtr	other_exposed)
+{
+    fbOverlayUpdateLayerRegion (pWin->drawable.pScreen,
+				fbOverlayWindowLayer (pWin),
+				prgn);
+    miWindowExposures(pWin, prgn, other_exposed);
+}
+
+Bool
+fbOverlaySetupScreen(ScreenPtr	pScreen,
+		     pointer	pbits1,
+		     pointer	pbits2,
+		     int	xsize,
+		     int	ysize,
+		     int	dpix,
+		     int	dpiy,
+		     int	width1,
+		     int	width2,
+		     int	bpp1,
+		     int	bpp2)
+{
+    return fbSetupScreen (pScreen,
+			  pbits1,
+			  xsize,
+			  ysize,
+			  dpix,
+			  dpiy,
+			  width1,
+			  bpp1);
+}
+
+static Bool
+fb24_32OverlayCreateScreenResources(ScreenPtr pScreen)
+{
+    FbOverlayScrPrivPtr	pScrPriv = fbOverlayGetScrPriv(pScreen);
+    int pitch;
+    Bool retval;
+    int i;
+
+    if((retval = fbOverlayCreateScreenResources(pScreen))) {
+	for (i = 0; i < pScrPriv->nlayers; i++)
+	{
+	    /* fix the screen pixmap */
+	    PixmapPtr pPix = (PixmapPtr) pScrPriv->layer[i].u.run.pixmap;
+	    if (pPix->drawable.bitsPerPixel == 32) {
+		pPix->drawable.bitsPerPixel = 24;
+		pitch = BitmapBytePad(pPix->drawable.width * 24);
+		pPix->devKind = pitch;
+	    }
+	}
+    }
+
+    return retval;
+}
+
+Bool
+fbOverlayFinishScreenInit(ScreenPtr	pScreen,
+			  pointer	pbits1,
+			  pointer	pbits2,
+			  int		xsize,
+			  int		ysize,
+			  int		dpix,
+			  int		dpiy,
+			  int		width1,
+			  int		width2,
+			  int		bpp1,
+			  int		bpp2,
+			  int		depth1,
+			  int		depth2)
+{
+    VisualPtr	visuals;
+    DepthPtr	depths;
+    int		nvisuals;
+    int		ndepths;
+    int		bpp = 0, imagebpp = 32;
+    VisualID	defaultVisual;
+    FbOverlayScrPrivPtr	pScrPriv;
+
+    if (!dixRegisterPrivateKey(&fbOverlayScreenPrivateKeyRec, PRIVATE_SCREEN, 0))
+	return FALSE;
+
+    pScrPriv = malloc(sizeof (FbOverlayScrPrivRec));
+    if (!pScrPriv)
+	return FALSE;
+ 
+    if (bpp1 == 32 || bpp2 == 32)
+	bpp = 32;
+    else if (bpp1 == 24 || bpp2 == 24)
+	bpp = 24;
+
+    if (bpp == 24)
+    {
+	int	f;
+	
+	imagebpp = 32;
+	/*
+	 * Check to see if we're advertising a 24bpp image format,
+	 * in which case windows will use it in preference to a 32 bit
+	 * format.
+	 */
+	for (f = 0; f < screenInfo.numPixmapFormats; f++)
+	{
+	    if (screenInfo.formats[f].bitsPerPixel == 24)
+	    {
+		imagebpp = 24;
+		break;
+	    }
+	}	    
+    }
+    if (imagebpp == 32)
+    {
+	fbGetScreenPrivate(pScreen)->win32bpp = bpp;
+	fbGetScreenPrivate(pScreen)->pix32bpp = bpp;
+    }
+    else
+    {
+	fbGetScreenPrivate(pScreen)->win32bpp = 32;
+	fbGetScreenPrivate(pScreen)->pix32bpp = 32;
+    }
+   
+    if (!fbInitVisuals (&visuals, &depths, &nvisuals, &ndepths, &depth1,
+			&defaultVisual, ((unsigned long)1<<(bpp1-1)) |
+			((unsigned long)1<<(bpp2-1)), 8))
+	return FALSE;
+    if (! miScreenInit(pScreen, 0, xsize, ysize, dpix, dpiy, 0,
+			depth1, ndepths, depths,
+			defaultVisual, nvisuals, visuals))
+	return FALSE;
+    /* MI thinks there's no frame buffer */
+#ifdef MITSHM
+    ShmRegisterFbFuncs(pScreen);
+#endif
+    pScreen->minInstalledCmaps = 1;
+    pScreen->maxInstalledCmaps = 2;
+    
+    pScrPriv->nlayers = 2;
+    pScrPriv->PaintKey = fbOverlayPaintKey;
+    pScrPriv->CopyWindow = fbCopyWindowProc;
+    pScrPriv->layer[0].u.init.pbits = pbits1;
+    pScrPriv->layer[0].u.init.width = width1;
+    pScrPriv->layer[0].u.init.depth = depth1;
+
+    pScrPriv->layer[1].u.init.pbits = pbits2;
+    pScrPriv->layer[1].u.init.width = width2;
+    pScrPriv->layer[1].u.init.depth = depth2;
+    dixSetPrivate(&pScreen->devPrivates, fbOverlayScreenPrivateKey, pScrPriv);
+    
+    /* overwrite miCloseScreen with our own */
+    pScreen->CloseScreen = fbOverlayCloseScreen;
+    pScreen->CreateScreenResources = fbOverlayCreateScreenResources;
+    pScreen->CreateWindow = fbOverlayCreateWindow;
+    pScreen->WindowExposures = fbOverlayWindowExposures;
+    pScreen->CopyWindow = fbOverlayCopyWindow;
+    if (bpp == 24 && imagebpp == 32)
+    {
+	pScreen->ModifyPixmapHeader = fb24_32ModifyPixmapHeader;
+  	pScreen->CreateScreenResources = fb24_32OverlayCreateScreenResources;
+    }
+
+    return TRUE;
+}