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diff --git a/nx-X11/programs/Xserver/composite/compinit.c b/nx-X11/programs/Xserver/composite/compinit.c
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+/*
+ * $Id: compinit.c,v 1.9 2005/07/03 07:37:34 daniels Exp $
+ *
+ * Copyright © 2003 Keith Packard
+ *
+ * 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 Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission. Keith Packard makes no
+ * representations about the suitability of this software for any purpose. It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD 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.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "compint.h"
+
+int CompScreenPrivateIndex;
+int CompWindowPrivateIndex;
+int CompSubwindowsPrivateIndex;
+int CompGeneration;
+
+static Bool
+compCloseScreen (int index, ScreenPtr pScreen)
+{
+ CompScreenPtr cs = GetCompScreen (pScreen);
+ Bool ret;
+
+ pScreen->CloseScreen = cs->CloseScreen;
+ pScreen->BlockHandler = cs->BlockHandler;
+ pScreen->InstallColormap = cs->InstallColormap;
+ pScreen->ReparentWindow = cs->ReparentWindow;
+ pScreen->MoveWindow = cs->MoveWindow;
+ pScreen->ResizeWindow = cs->ResizeWindow;
+ pScreen->ChangeBorderWidth = cs->ChangeBorderWidth;
+
+ pScreen->ClipNotify = cs->ClipNotify;
+ pScreen->PaintWindowBackground = cs->PaintWindowBackground;
+ pScreen->UnrealizeWindow = cs->UnrealizeWindow;
+ pScreen->RealizeWindow = cs->RealizeWindow;
+ pScreen->DestroyWindow = cs->DestroyWindow;
+ pScreen->CreateWindow = cs->CreateWindow;
+ pScreen->CopyWindow = cs->CopyWindow;
+ pScreen->PositionWindow = cs->PositionWindow;
+ xfree (cs);
+ pScreen->devPrivates[CompScreenPrivateIndex].ptr = 0;
+ ret = (*pScreen->CloseScreen) (index, pScreen);
+ return ret;
+}
+
+static void
+compInstallColormap (ColormapPtr pColormap)
+{
+ VisualPtr pVisual = pColormap->pVisual;
+ ScreenPtr pScreen = pColormap->pScreen;
+ CompScreenPtr cs = GetCompScreen (pScreen);
+ int a;
+
+ for (a = 0; a < NUM_COMP_ALTERNATE_VISUALS; a++)
+ if (pVisual->vid == cs->alternateVisuals[a])
+ return;
+ pScreen->InstallColormap = cs->InstallColormap;
+ (*pScreen->InstallColormap) (pColormap);
+ cs->InstallColormap = pScreen->InstallColormap;
+ pScreen->InstallColormap = compInstallColormap;
+}
+
+static void
+compScreenUpdate (ScreenPtr pScreen)
+{
+ CompScreenPtr cs = GetCompScreen (pScreen);
+
+ compCheckTree (pScreen);
+ if (cs->damaged)
+ {
+ compWindowUpdate (WindowTable[pScreen->myNum]);
+ cs->damaged = FALSE;
+ }
+}
+
+static void
+compBlockHandler (int i,
+ pointer blockData,
+ pointer pTimeout,
+ pointer pReadmask)
+{
+ ScreenPtr pScreen = screenInfo.screens[i];
+ CompScreenPtr cs = GetCompScreen (pScreen);
+
+ pScreen->BlockHandler = cs->BlockHandler;
+ compScreenUpdate (pScreen);
+ (*pScreen->BlockHandler) (i, blockData, pTimeout, pReadmask);
+ cs->BlockHandler = pScreen->BlockHandler;
+ pScreen->BlockHandler = compBlockHandler;
+}
+
+/*
+ * Add alternate visuals -- always expose an ARGB32 and RGB24 visual
+ */
+
+static DepthPtr
+compFindVisuallessDepth (ScreenPtr pScreen, int d)
+{
+ int i;
+
+ for (i = 0; i < pScreen->numDepths; i++)
+ {
+ DepthPtr depth = &pScreen->allowedDepths[i];
+ if (depth->depth == d)
+ {
+ /*
+ * Make sure it doesn't have visuals already
+ */
+ if (depth->numVids)
+ return 0;
+ /*
+ * looks fine
+ */
+ return depth;
+ }
+ }
+ /*
+ * If there isn't one, then it's gonna be hard to have
+ * an associated visual
+ */
+ return 0;
+}
+
+typedef struct _alternateVisual {
+ int depth;
+ CARD32 format;
+} CompAlternateVisual;
+
+static CompAlternateVisual altVisuals[NUM_COMP_ALTERNATE_VISUALS] = {
+#if COMP_INCLUDE_RGB24_VISUAL
+ { 24, PICT_r8g8b8 },
+#endif
+ { 32, PICT_a8r8g8b8 },
+};
+
+static Bool
+compAddAlternateVisuals (ScreenPtr pScreen, CompScreenPtr cs)
+{
+ VisualPtr visuals;
+ DepthPtr depths[NUM_COMP_ALTERNATE_VISUALS];
+ PictFormatPtr pPictFormats[NUM_COMP_ALTERNATE_VISUALS];
+ int i;
+ int numVisuals;
+ VisualID *vids[NUM_COMP_ALTERNATE_VISUALS];
+ XID *installedCmaps;
+ ColormapPtr installedCmap;
+ int numInstalledCmaps;
+ int numAlternate = 0;
+ int alt;
+
+ memset (cs->alternateVisuals, '\0', sizeof (cs->alternateVisuals));
+
+ for (alt = 0; alt < NUM_COMP_ALTERNATE_VISUALS; alt++)
+ {
+ DepthPtr depth;
+ PictFormatPtr pPictFormat;
+
+ depth = compFindVisuallessDepth (pScreen, altVisuals[alt].depth);
+ if (!depth)
+ continue;
+ /*
+ * Find the right picture format
+ */
+ pPictFormat = PictureMatchFormat (pScreen, altVisuals[alt].depth,
+ altVisuals[alt].format);
+ if (!pPictFormat)
+ continue;
+
+ /*
+ * Allocate vid list for this depth
+ */
+ vids[numAlternate] = xalloc (sizeof (VisualID));
+ if (!vids[numAlternate])
+ continue;
+ depths[numAlternate] = depth;
+ pPictFormats[numAlternate] = pPictFormat;
+ numAlternate++;
+ }
+
+ if (!numAlternate)
+ return TRUE;
+
+ /*
+ * Find the installed colormaps
+ */
+ installedCmaps = xalloc (pScreen->maxInstalledCmaps * sizeof (XID));
+ if (!installedCmaps)
+ {
+ for (alt = 0; alt < numAlternate; alt++)
+ xfree (vids[alt]);
+ return FALSE;
+ }
+ numInstalledCmaps = (*pScreen->ListInstalledColormaps) (pScreen,
+ installedCmaps);
+
+ /*
+ * realloc the visual array to fit the new one in place
+ */
+ numVisuals = pScreen->numVisuals;
+ visuals = xrealloc (pScreen->visuals,
+ (numVisuals + numAlternate) * sizeof (VisualRec));
+ if (!visuals)
+ {
+ for (alt = 0; alt < numAlternate; alt++)
+ xfree (vids[alt]);
+ xfree (installedCmaps);
+ return FALSE;
+ }
+
+ /*
+ * Fix up any existing installed colormaps -- we'll assume that
+ * the only ones created so far have been installed. If this
+ * isn't true, we'll have to walk the resource database looking
+ * for all colormaps.
+ */
+ for (i = 0; i < numInstalledCmaps; i++)
+ {
+ int j;
+
+ installedCmap = LookupIDByType (installedCmaps[i], RT_COLORMAP);
+ if (!installedCmap)
+ continue;
+ j = installedCmap->pVisual - pScreen->visuals;
+ installedCmap->pVisual = &visuals[j];
+ }
+
+ xfree (installedCmaps);
+
+ pScreen->visuals = visuals;
+ pScreen->numVisuals = numVisuals + numAlternate;
+
+ for (alt = 0; alt < numAlternate; alt++)
+ {
+ DepthPtr depth = depths[alt];
+ PictFormatPtr pPictFormat = pPictFormats[alt];
+ VisualPtr visual = &visuals[numVisuals + alt];
+ unsigned long alphaMask;
+
+ /*
+ * Initialize the visual
+ */
+ visual->class = TrueColor;
+ visual->bitsPerRGBValue = 8;
+
+ visual->vid = FakeClientID (0);
+ visual->redMask = (((unsigned long) pPictFormat->direct.redMask) <<
+ pPictFormat->direct.red);
+ visual->greenMask = (((unsigned long) pPictFormat->direct.greenMask) <<
+ pPictFormat->direct.green);
+ visual->blueMask = (((unsigned long) pPictFormat->direct.blueMask) <<
+ pPictFormat->direct.blue);
+ alphaMask = (((unsigned long) pPictFormat->direct.alphaMask) <<
+ pPictFormat->direct.alpha);
+ visual->offsetRed = pPictFormat->direct.red;
+ visual->offsetGreen = pPictFormat->direct.green;
+ visual->offsetBlue = pPictFormat->direct.blue;
+ /*
+ * Include A bits in this (unlike GLX which includes only RGB)
+ * This lets DIX compute suitable masks for colormap allocations
+ */
+ visual->nplanes = Ones (visual->redMask |
+ visual->greenMask |
+ visual->blueMask |
+ alphaMask);
+ /*
+ * find widest component
+ */
+ visual->ColormapEntries = (1 << max (Ones (visual->redMask),
+ max (Ones (visual->greenMask),
+ Ones (visual->blueMask))));
+
+ /*
+ * remember the visual ID to detect auto-update windows
+ */
+ cs->alternateVisuals[alt] = visual->vid;
+
+ /*
+ * Fix up the depth
+ */
+ vids[alt][0] = visual->vid;
+ depth->numVids = 1;
+ depth->vids = vids[alt];
+ }
+ return TRUE;
+}
+
+Bool
+compScreenInit (ScreenPtr pScreen)
+{
+ CompScreenPtr cs;
+
+ if (CompGeneration != serverGeneration)
+ {
+ CompScreenPrivateIndex = AllocateScreenPrivateIndex ();
+ if (CompScreenPrivateIndex == -1)
+ return FALSE;
+ CompWindowPrivateIndex = AllocateWindowPrivateIndex ();
+ if (CompWindowPrivateIndex == -1)
+ return FALSE;
+ CompSubwindowsPrivateIndex = AllocateWindowPrivateIndex ();
+ if (CompSubwindowsPrivateIndex == -1)
+ return FALSE;
+ CompGeneration = serverGeneration;
+ }
+ if (!AllocateWindowPrivate (pScreen, CompWindowPrivateIndex, 0))
+ return FALSE;
+
+ if (!AllocateWindowPrivate (pScreen, CompSubwindowsPrivateIndex, 0))
+ return FALSE;
+
+ if (GetCompScreen (pScreen))
+ return TRUE;
+ cs = (CompScreenPtr) xalloc (sizeof (CompScreenRec));
+ if (!cs)
+ return FALSE;
+
+ cs->damaged = FALSE;
+
+ if (!compAddAlternateVisuals (pScreen, cs))
+ {
+ xfree (cs);
+ return FALSE;
+ }
+
+ cs->PositionWindow = pScreen->PositionWindow;
+ pScreen->PositionWindow = compPositionWindow;
+
+ cs->CopyWindow = pScreen->CopyWindow;
+ pScreen->CopyWindow = compCopyWindow;
+
+ cs->CreateWindow = pScreen->CreateWindow;
+ pScreen->CreateWindow = compCreateWindow;
+
+ cs->DestroyWindow = pScreen->DestroyWindow;
+ pScreen->DestroyWindow = compDestroyWindow;
+
+ cs->RealizeWindow = pScreen->RealizeWindow;
+ pScreen->RealizeWindow = compRealizeWindow;
+
+ cs->UnrealizeWindow = pScreen->UnrealizeWindow;
+ pScreen->UnrealizeWindow = compUnrealizeWindow;
+
+ cs->PaintWindowBackground = pScreen->PaintWindowBackground;
+ pScreen->PaintWindowBackground = compPaintWindowBackground;
+
+ cs->ClipNotify = pScreen->ClipNotify;
+ pScreen->ClipNotify = compClipNotify;
+
+ cs->MoveWindow = pScreen->MoveWindow;
+ pScreen->MoveWindow = compMoveWindow;
+
+ cs->ResizeWindow = pScreen->ResizeWindow;
+ pScreen->ResizeWindow = compResizeWindow;
+
+ cs->ChangeBorderWidth = pScreen->ChangeBorderWidth;
+ pScreen->ChangeBorderWidth = compChangeBorderWidth;
+
+ cs->ReparentWindow = pScreen->ReparentWindow;
+ pScreen->ReparentWindow = compReparentWindow;
+
+ cs->InstallColormap = pScreen->InstallColormap;
+ pScreen->InstallColormap = compInstallColormap;
+
+ cs->BlockHandler = pScreen->BlockHandler;
+ pScreen->BlockHandler = compBlockHandler;
+
+ cs->CloseScreen = pScreen->CloseScreen;
+ pScreen->CloseScreen = compCloseScreen;
+
+ pScreen->devPrivates[CompScreenPrivateIndex].ptr = (pointer) cs;
+ return TRUE;
+}