diff options
Diffstat (limited to 'xorg-server/composite/compinit.c')
| -rw-r--r-- | xorg-server/composite/compinit.c | 788 |
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;
+}
|