xserver git update 15/5/2010

1 files changed, 394 insertions, 394 deletions

diff --git a/xorg-server/composite/compinit.c b/xorg-server/composite/compinit.c
index e8b563de6..9a99ce633 100644
--- a/xorg-server/composite/compinit.c
+++ b/xorg-server/composite/compinit.c
@@ -1,394 +1,394 @@
-/*
- * Copyright © 2006 Sun Microsystems, 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 (including the next
- * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.
- *
- * 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"
-#include "compositeext.h"
-
-static int CompScreenPrivateKeyIndex;
-DevPrivateKey CompScreenPrivateKey = &CompScreenPrivateKeyIndex;
-static int CompWindowPrivateKeyIndex;
-DevPrivateKey CompWindowPrivateKey = &CompWindowPrivateKeyIndex;
-static int CompSubwindowsPrivateKeyIndex;
-DevPrivateKey CompSubwindowsPrivateKey = &CompSubwindowsPrivateKeyIndex;
-
-
-static Bool
-compCloseScreen (int index, ScreenPtr pScreen)
-{
-    CompScreenPtr   cs = GetCompScreen (pScreen);
-    Bool	    ret;
-
-    xfree (cs->alternateVisuals);
-
-    pScreen->CloseScreen = cs->CloseScreen;
-    pScreen->BlockHandler = cs->BlockHandler;
-    pScreen->InstallColormap = cs->InstallColormap;
-    pScreen->ChangeWindowAttributes = cs->ChangeWindowAttributes;
-    pScreen->ReparentWindow = cs->ReparentWindow;
-    pScreen->MoveWindow = cs->MoveWindow;
-    pScreen->ResizeWindow = cs->ResizeWindow;
-    pScreen->ChangeBorderWidth = cs->ChangeBorderWidth;
-    
-    pScreen->ClipNotify = cs->ClipNotify;
-    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);
-    dixSetPrivate(&pScreen->devPrivates, CompScreenPrivateKey, NULL);
-    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 < cs->numAlternateVisuals; a++)
-	if (pVisual->vid == cs->alternateVisuals[a])
-	    return;
-    pScreen->InstallColormap = cs->InstallColormap;
-    (*pScreen->InstallColormap) (pColormap);
-    cs->InstallColormap = pScreen->InstallColormap;
-    pScreen->InstallColormap = compInstallColormap;
-}
-
-/* Fake backing store via automatic redirection */
-static Bool
-compChangeWindowAttributes(WindowPtr pWin, unsigned long mask)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-    CompScreenPtr cs = GetCompScreen (pScreen);
-    Bool ret;
-
-    pScreen->ChangeWindowAttributes = cs->ChangeWindowAttributes;
-    ret = pScreen->ChangeWindowAttributes(pWin, mask);
-
-    if (ret && (mask & CWBackingStore) &&
-	    pScreen->backingStoreSupport != NotUseful) {
-	if (pWin->backingStore != NotUseful) {
-	    compRedirectWindow(serverClient, pWin, CompositeRedirectAutomatic);
-	    pWin->backStorage = (pointer) (intptr_t) 1;
-	} else {
-	    compUnredirectWindow(serverClient, pWin,
-				 CompositeRedirectAutomatic);
-	    pWin->backStorage = NULL;
-	}
-    }
-
-    pScreen->ChangeWindowAttributes = compChangeWindowAttributes;
-
-    return ret;
-}
-
-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;
-}
-
-/*
- * Add a list of visual IDs to the list of visuals to implicitly redirect.
- */
-static Bool
-compRegisterAlternateVisuals (CompScreenPtr cs, VisualID *vids, int nVisuals)
-{
-    VisualID *p;
-
-    p = xrealloc(cs->alternateVisuals,
-		 sizeof(VisualID) * (cs->numAlternateVisuals + nVisuals));
-    if(p == NULL)
-	return FALSE;
-
-    memcpy(&p[cs->numAlternateVisuals], vids, sizeof(VisualID) * nVisuals);
-
-    cs->alternateVisuals = p;
-    cs->numAlternateVisuals += nVisuals;
-
-    return TRUE;
-}
-
-Bool CompositeRegisterAlternateVisuals (ScreenPtr pScreen, VisualID *vids,
-					int nVisuals)
-{
-    CompScreenPtr cs = GetCompScreen (pScreen);
-    return compRegisterAlternateVisuals(cs, vids, nVisuals);
-}
-
-typedef struct _alternateVisual {
-    int		depth;
-    CARD32	format;
-} CompAlternateVisual;
-
-static CompAlternateVisual  altVisuals[] = {
-#if COMP_INCLUDE_RGB24_VISUAL
-    {	24,	PICT_r8g8b8 },
-#endif
-    {	32,	PICT_a8r8g8b8 },
-};
-
-static const int NUM_COMP_ALTERNATE_VISUALS = sizeof(altVisuals) /
-					      sizeof(CompAlternateVisual);
-
-static Bool
-compAddAlternateVisual(ScreenPtr pScreen, CompScreenPtr cs,
-		       CompAlternateVisual *alt)
-{
-    VisualPtr	    visual;
-    DepthPtr	    depth;
-    PictFormatPtr   pPictFormat;
-    unsigned long   alphaMask;
-
-    /*
-     * The ARGB32 visual is always available.  Other alternate depth visuals
-     * are only provided if their depth is less than the root window depth.
-     * There's no deep reason for this.
-     */
-    if (alt->depth >= pScreen->rootDepth && alt->depth != 32)
-	return FALSE;
-
-    depth = compFindVisuallessDepth (pScreen, alt->depth);
-    if (!depth)
-	/* alt->depth doesn't exist or already has alternate visuals. */
-	return TRUE;
-
-    pPictFormat = PictureMatchFormat (pScreen, alt->depth, alt->format);
-    if (!pPictFormat)
-	return FALSE;
-
-    if (ResizeVisualArray(pScreen, 1, depth) == FALSE) {
-        return FALSE;
-    }
-
-    visual = pScreen->visuals + (pScreen->numVisuals - 1); /* the new one */
-
-    /* Initialize the visual */
-    visual->bitsPerRGBValue = 8;
-    if (PICT_FORMAT_TYPE(alt->format) == PICT_TYPE_COLOR) {
-	visual->class = PseudoColor;
-	visual->nplanes = PICT_FORMAT_BPP(alt->format);
-	visual->ColormapEntries = 1 << visual->nplanes;
-    } else {
-	DirectFormatRec *direct = &pPictFormat->direct;
-	visual->class = TrueColor;
-	visual->redMask   = ((unsigned long)direct->redMask) << direct->red;
-	visual->greenMask = ((unsigned long)direct->greenMask) << direct->green;
-	visual->blueMask  = ((unsigned long)direct->blueMask) << direct->blue;
-	alphaMask = ((unsigned long)direct->alphaMask) << direct->alpha;
-	visual->offsetRed   = direct->red;
-	visual->offsetGreen = direct->green;
-	visual->offsetBlue  = 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 */
-    compRegisterAlternateVisuals(cs, &visual->vid, 1);
-
-    return TRUE;
-}
-
-static Bool
-compAddAlternateVisuals (ScreenPtr pScreen, CompScreenPtr cs)
-{
-    int alt, ret = 0;
-
-    for (alt = 0; alt < NUM_COMP_ALTERNATE_VISUALS; alt++)
-	ret |= compAddAlternateVisual(pScreen, cs, altVisuals + alt);
-
-    return !!ret;
-}
-
-Bool
-compScreenInit (ScreenPtr pScreen)
-{
-    CompScreenPtr   cs;
-
-    if (GetCompScreen (pScreen))
-	return TRUE;
-    cs = (CompScreenPtr) xalloc (sizeof (CompScreenRec));
-    if (!cs)
-	return FALSE;
-
-    cs->damaged = FALSE;
-    cs->overlayWid = FakeClientID(0);
-    cs->pOverlayWin = NULL;
-    cs->pOverlayClients = NULL;
-
-    cs->numAlternateVisuals = 0;
-    cs->alternateVisuals = NULL;
-
-    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->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->ChangeWindowAttributes = pScreen->ChangeWindowAttributes;
-    pScreen->ChangeWindowAttributes = compChangeWindowAttributes;
-
-    cs->BlockHandler = pScreen->BlockHandler;
-    pScreen->BlockHandler = compBlockHandler;
-
-    cs->CloseScreen = pScreen->CloseScreen;
-    pScreen->CloseScreen = compCloseScreen;
-
-    dixSetPrivate(&pScreen->devPrivates, CompScreenPrivateKey, cs);
-
-    RegisterRealChildHeadProc(CompositeRealChildHead);
-
-    return TRUE;
-}
+/*

+ * Copyright © 2006 Sun Microsystems, 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 (including the next

+ * paragraph) 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 AUTHORS OR COPYRIGHT HOLDERS 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.

+ *

+ * 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"

+#include "compositeext.h"

+

+static int CompScreenPrivateKeyIndex;

+DevPrivateKey CompScreenPrivateKey = &CompScreenPrivateKeyIndex;

+static int CompWindowPrivateKeyIndex;

+DevPrivateKey CompWindowPrivateKey = &CompWindowPrivateKeyIndex;

+static int CompSubwindowsPrivateKeyIndex;

+DevPrivateKey CompSubwindowsPrivateKey = &CompSubwindowsPrivateKeyIndex;

+

+

+static Bool

+compCloseScreen (int index, ScreenPtr pScreen)

+{

+    CompScreenPtr   cs = GetCompScreen (pScreen);

+    Bool	    ret;

+

+    free(cs->alternateVisuals);

+

+    pScreen->CloseScreen = cs->CloseScreen;

+    pScreen->BlockHandler = cs->BlockHandler;

+    pScreen->InstallColormap = cs->InstallColormap;

+    pScreen->ChangeWindowAttributes = cs->ChangeWindowAttributes;

+    pScreen->ReparentWindow = cs->ReparentWindow;

+    pScreen->MoveWindow = cs->MoveWindow;

+    pScreen->ResizeWindow = cs->ResizeWindow;

+    pScreen->ChangeBorderWidth = cs->ChangeBorderWidth;

+    

+    pScreen->ClipNotify = cs->ClipNotify;

+    pScreen->UnrealizeWindow = cs->UnrealizeWindow;

+    pScreen->RealizeWindow = cs->RealizeWindow;

+    pScreen->DestroyWindow = cs->DestroyWindow;

+    pScreen->CreateWindow = cs->CreateWindow;

+    pScreen->CopyWindow = cs->CopyWindow;

+    pScreen->PositionWindow = cs->PositionWindow;

+

+    free(cs);

+    dixSetPrivate(&pScreen->devPrivates, CompScreenPrivateKey, NULL);

+    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 < cs->numAlternateVisuals; a++)

+	if (pVisual->vid == cs->alternateVisuals[a])

+	    return;

+    pScreen->InstallColormap = cs->InstallColormap;

+    (*pScreen->InstallColormap) (pColormap);

+    cs->InstallColormap = pScreen->InstallColormap;

+    pScreen->InstallColormap = compInstallColormap;

+}

+

+/* Fake backing store via automatic redirection */

+static Bool

+compChangeWindowAttributes(WindowPtr pWin, unsigned long mask)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+    CompScreenPtr cs = GetCompScreen (pScreen);

+    Bool ret;

+

+    pScreen->ChangeWindowAttributes = cs->ChangeWindowAttributes;

+    ret = pScreen->ChangeWindowAttributes(pWin, mask);

+

+    if (ret && (mask & CWBackingStore) &&

+	    pScreen->backingStoreSupport != NotUseful) {

+	if (pWin->backingStore != NotUseful) {

+	    compRedirectWindow(serverClient, pWin, CompositeRedirectAutomatic);

+	    pWin->backStorage = (pointer) (intptr_t) 1;

+	} else {

+	    compUnredirectWindow(serverClient, pWin,

+				 CompositeRedirectAutomatic);

+	    pWin->backStorage = NULL;

+	}

+    }

+

+    pScreen->ChangeWindowAttributes = compChangeWindowAttributes;

+

+    return ret;

+}

+

+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;

+}

+

+/*

+ * Add a list of visual IDs to the list of visuals to implicitly redirect.

+ */

+static Bool

+compRegisterAlternateVisuals (CompScreenPtr cs, VisualID *vids, int nVisuals)

+{

+    VisualID *p;

+

+    p = realloc(cs->alternateVisuals,

+		 sizeof(VisualID) * (cs->numAlternateVisuals + nVisuals));

+    if(p == NULL)

+	return FALSE;

+

+    memcpy(&p[cs->numAlternateVisuals], vids, sizeof(VisualID) * nVisuals);

+

+    cs->alternateVisuals = p;

+    cs->numAlternateVisuals += nVisuals;

+

+    return TRUE;

+}

+

+Bool CompositeRegisterAlternateVisuals (ScreenPtr pScreen, VisualID *vids,

+					int nVisuals)

+{

+    CompScreenPtr cs = GetCompScreen (pScreen);

+    return compRegisterAlternateVisuals(cs, vids, nVisuals);

+}

+

+typedef struct _alternateVisual {

+    int		depth;

+    CARD32	format;

+} CompAlternateVisual;

+

+static CompAlternateVisual  altVisuals[] = {

+#if COMP_INCLUDE_RGB24_VISUAL

+    {	24,	PICT_r8g8b8 },

+#endif

+    {	32,	PICT_a8r8g8b8 },

+};

+

+static const int NUM_COMP_ALTERNATE_VISUALS = sizeof(altVisuals) /

+					      sizeof(CompAlternateVisual);

+

+static Bool

+compAddAlternateVisual(ScreenPtr pScreen, CompScreenPtr cs,

+		       CompAlternateVisual *alt)

+{

+    VisualPtr	    visual;

+    DepthPtr	    depth;

+    PictFormatPtr   pPictFormat;

+    unsigned long   alphaMask;

+

+    /*

+     * The ARGB32 visual is always available.  Other alternate depth visuals

+     * are only provided if their depth is less than the root window depth.

+     * There's no deep reason for this.

+     */

+    if (alt->depth >= pScreen->rootDepth && alt->depth != 32)

+	return FALSE;

+

+    depth = compFindVisuallessDepth (pScreen, alt->depth);

+    if (!depth)

+	/* alt->depth doesn't exist or already has alternate visuals. */

+	return TRUE;

+

+    pPictFormat = PictureMatchFormat (pScreen, alt->depth, alt->format);

+    if (!pPictFormat)

+	return FALSE;

+

+    if (ResizeVisualArray(pScreen, 1, depth) == FALSE) {

+        return FALSE;

+    }

+

+    visual = pScreen->visuals + (pScreen->numVisuals - 1); /* the new one */

+

+    /* Initialize the visual */

+    visual->bitsPerRGBValue = 8;

+    if (PICT_FORMAT_TYPE(alt->format) == PICT_TYPE_COLOR) {

+	visual->class = PseudoColor;

+	visual->nplanes = PICT_FORMAT_BPP(alt->format);

+	visual->ColormapEntries = 1 << visual->nplanes;

+    } else {

+	DirectFormatRec *direct = &pPictFormat->direct;

+	visual->class = TrueColor;

+	visual->redMask   = ((unsigned long)direct->redMask) << direct->red;

+	visual->greenMask = ((unsigned long)direct->greenMask) << direct->green;

+	visual->blueMask  = ((unsigned long)direct->blueMask) << direct->blue;

+	alphaMask = ((unsigned long)direct->alphaMask) << direct->alpha;

+	visual->offsetRed   = direct->red;

+	visual->offsetGreen = direct->green;

+	visual->offsetBlue  = 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 */

+    compRegisterAlternateVisuals(cs, &visual->vid, 1);

+

+    return TRUE;

+}

+

+static Bool

+compAddAlternateVisuals (ScreenPtr pScreen, CompScreenPtr cs)

+{

+    int alt, ret = 0;

+

+    for (alt = 0; alt < NUM_COMP_ALTERNATE_VISUALS; alt++)

+	ret |= compAddAlternateVisual(pScreen, cs, altVisuals + alt);

+

+    return !!ret;

+}

+

+Bool

+compScreenInit (ScreenPtr pScreen)

+{

+    CompScreenPtr   cs;

+

+    if (GetCompScreen (pScreen))

+	return TRUE;

+    cs = (CompScreenPtr) malloc(sizeof (CompScreenRec));

+    if (!cs)

+	return FALSE;

+

+    cs->damaged = FALSE;

+    cs->overlayWid = FakeClientID(0);

+    cs->pOverlayWin = NULL;

+    cs->pOverlayClients = NULL;

+

+    cs->numAlternateVisuals = 0;

+    cs->alternateVisuals = NULL;

+

+    if (!compAddAlternateVisuals (pScreen, cs))

+    {

+	free(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->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->ChangeWindowAttributes = pScreen->ChangeWindowAttributes;

+    pScreen->ChangeWindowAttributes = compChangeWindowAttributes;

+

+    cs->BlockHandler = pScreen->BlockHandler;

+    pScreen->BlockHandler = compBlockHandler;

+

+    cs->CloseScreen = pScreen->CloseScreen;

+    pScreen->CloseScreen = compCloseScreen;

+

+    dixSetPrivate(&pScreen->devPrivates, CompScreenPrivateKey, cs);

+

+    RegisterRealChildHeadProc(CompositeRealChildHead);

+

+    return TRUE;

+}