misc nx-X11/{programs/Xserver/composite,include/extensions}: update to Composite 0.4 - with changes where neccessary and rough edges.

1 files changed, 707 insertions, 34 deletions

diff --git a/nx-X11/programs/Xserver/composite/compext.c b/nx-X11/programs/Xserver/composite/compext.c
index f57235d46..d5f8fd6d4 100644
--- a/nx-X11/programs/Xserver/composite/compext.c
+++ b/nx-X11/programs/Xserver/composite/compext.c
@@ -27,18 +27,44 @@
 #endif
 
 #include "compint.h"
+#include "XI.h"
+#include "XIproto.h"
+#include "extinit.h"
+
+#ifndef SERVER_COMPOSITE_MAJOR_VERSION
+#define SERVER_COMPOSITE_MAJOR_VERSION 0
+#endif
+
+#ifndef SERVER_COMPOSITE_MINOR_VERSION
+#define SERVER_COMPOSITE_MINOR_VERSION 4
+#endif
 
 static CARD8	CompositeReqCode;
-int		CompositeClientPrivateIndex;
+
+#ifndef NXAGENT_SERVER
+static DevPrivateKeyRec CompositeClientPrivateKeyRec;
+
+#define CompositeClientPrivateKey (&CompositeClientPrivateKeyRec)
+#else /* !defined(NXAGENT_SERVER) */
+static int CompositeClientPrivIndex = -1;
+#endif /* !defined(NXAGENT_SERVER) */
+
 RESTYPE		CompositeClientWindowType;
 RESTYPE		CompositeClientSubwindowsType;
+RESTYPE CompositeClientOverlayType;
 
 typedef struct _CompositeClient {
     int	    major_version;
     int	    minor_version;
 } CompositeClientRec, *CompositeClientPtr;
 
-#define GetCompositeClient(pClient)    ((CompositeClientPtr) (pClient)->devPrivates[CompositeClientPrivateIndex].ptr)
+#ifndef NXAGENT_SERVER
+#define GetCompositeClient(pClient) ((CompositeClientPtr) \
+    dixLookupPrivate(&(pClient)->devPrivates, CompositeClientPrivateKey))
+#else /* !defined(NXAGENT_SERVER) */
+#define GetCompositeClient(pClient) ((CompositeClientPtr) \
+    (pClient)->devPrivates[CompositeClientPrivIndex].ptr)
+#endif /* !edefined(NXAGENT_SERVER) */
 
 static void
 CompositeClientCallback (CallbackListPtr	*list,
@@ -57,22 +83,31 @@ static void
 CompositeResetProc (ExtensionEntry *extEntry)
 {
 }
+
+static int
+FreeCompositeClientWindow(void *value, XID ccwid)
+{
+    WindowPtr pWin = value;
+
+    compFreeClientWindow(pWin, ccwid);
+    return Success;
+}
     
 static int
-FreeCompositeClientWindow (void * value, XID ccwid)
+FreeCompositeClientSubwindows(void *value, XID ccwid)
 {
     WindowPtr	pWin = value;
 
-    compFreeClientWindow (pWin, ccwid);
+    compFreeClientSubwindows(pWin, ccwid);
     return Success;
 }
 
 static int
-FreeCompositeClientSubwindows (void * value, XID ccwid)
+FreeCompositeClientOverlay(void *value, XID ccwid)
 {
-    WindowPtr	pWin = value;
+    CompOverlayClientPtr pOc = (CompOverlayClientPtr) value;
 
-    compFreeClientSubwindows (pWin, ccwid);
+    compFreeOverlayClient(pOc);
     return Success;
 }
 
@@ -80,24 +115,22 @@ static int
 ProcCompositeQueryVersion (ClientPtr client)
 {
     CompositeClientPtr pCompositeClient = GetCompositeClient (client);
-    xCompositeQueryVersionReply rep;
+    xCompositeQueryVersionReply rep = {
+        .type = X_Reply,
+        .sequenceNumber = client->sequence,
+        .length = 0
+    };
     register int n;
+
     REQUEST(xCompositeQueryVersionReq);
 
     REQUEST_SIZE_MATCH(xCompositeQueryVersionReq);
-    rep.type = X_Reply;
-    rep.length = 0;
-    rep.sequenceNumber = client->sequence;
-    if (stuff->majorVersion < COMPOSITE_MAJOR) {
+    if (stuff->majorVersion < SERVER_COMPOSITE_MAJOR_VERSION) {
 	rep.majorVersion = stuff->majorVersion;
 	rep.minorVersion = stuff->minorVersion;
     } else {
-	rep.majorVersion = COMPOSITE_MAJOR;
-	if (stuff->majorVersion == COMPOSITE_MAJOR && 
-	    stuff->minorVersion < COMPOSITE_MINOR)
-	    rep.minorVersion = stuff->minorVersion;
-	else
-	    rep.minorVersion = COMPOSITE_MINOR;
+	rep.majorVersion = SERVER_COMPOSITE_MAJOR_VERSION;
+	rep.minorVersion = SERVER_COMPOSITE_MINOR_VERSION;
     }
     pCompositeClient->major_version = rep.majorVersion;
     pCompositeClient->minor_version = rep.minorVersion;
@@ -108,9 +141,23 @@ ProcCompositeQueryVersion (ClientPtr client)
 	swapl(&rep.minorVersion, n);
     }
     WriteToClient(client, sizeof(xCompositeQueryVersionReply), (char *)&rep);
-    return(client->noClientException);
+    return Success;
 }
 
+/* Unsupported by current architecture and porting is too much effort. */
+#if 0
+#define VERIFY_WINDOW(pWindow, wid, client, mode)			\
+    do {								\
+	int err;							\
+	err = dixLookupResourceByType((void **) &pWindow, wid,	\
+				      RT_WINDOW, client, mode);		\
+	if (err != Success) {						\
+	    client->errorValue = wid;					\
+	    return err;							\
+	}								\
+    } while (0)
+#endif /* 0 */
+
 static int
 ProcCompositeRedirectWindow (ClientPtr client)
 {
@@ -118,12 +165,18 @@ ProcCompositeRedirectWindow (ClientPtr client)
     REQUEST(xCompositeRedirectWindowReq);
 
     REQUEST_SIZE_MATCH(xCompositeRedirectWindowReq);
+    /* Unsupported by current architecture and porting is too much effort. */
+    /*
+    VERIFY_WINDOW(pWin, stuff->window, client,
+                  DixSetAttrAccess | DixManageAccess | DixBlendAccess);
+    */
     pWin = (WindowPtr) LookupIDByType (stuff->window, RT_WINDOW);
     if (!pWin)
     {
 	client->errorValue = stuff->window;
 	return BadWindow;
     }
+
     return compRedirectWindow (client, pWin, stuff->update);
 }
 
@@ -134,12 +187,18 @@ ProcCompositeRedirectSubwindows (ClientPtr client)
     REQUEST(xCompositeRedirectSubwindowsReq);
 
     REQUEST_SIZE_MATCH(xCompositeRedirectSubwindowsReq);
+    /* Unsupported by current architecture and porting is too much effort. */
+    /*
+    VERIFY_WINDOW(pWin, stuff->window, client,
+                  DixSetAttrAccess | DixManageAccess | DixBlendAccess);
+    */
     pWin = (WindowPtr) LookupIDByType (stuff->window, RT_WINDOW);
     if (!pWin)
     {
 	client->errorValue = stuff->window;
 	return BadWindow;
     }
+
     return compRedirectSubwindows (client, pWin, stuff->update);
 }
 
@@ -150,12 +209,18 @@ ProcCompositeUnredirectWindow (ClientPtr client)
     REQUEST(xCompositeUnredirectWindowReq);
 
     REQUEST_SIZE_MATCH(xCompositeUnredirectWindowReq);
+    /* Unsupported by current architecture and porting is too much effort. */
+    /*
+    VERIFY_WINDOW(pWin, stuff->window, client,
+                  DixSetAttrAccess | DixManageAccess | DixBlendAccess);
+    */
     pWin = (WindowPtr) LookupIDByType (stuff->window, RT_WINDOW);
     if (!pWin)
     {
 	client->errorValue = stuff->window;
 	return BadWindow;
     }
+
     return compUnredirectWindow (client, pWin, stuff->update);
 }
 
@@ -166,12 +231,18 @@ ProcCompositeUnredirectSubwindows (ClientPtr client)
     REQUEST(xCompositeUnredirectSubwindowsReq);
 
     REQUEST_SIZE_MATCH(xCompositeUnredirectSubwindowsReq);
+    /* Unsupported by current architecture and porting is too much effort. */
+    /*
+    VERIFY_WINDOW(pWin, stuff->window, client,
+                  DixSetAttrAccess | DixManageAccess | DixBlendAccess);
+    */
     pWin = (WindowPtr) LookupIDByType (stuff->window, RT_WINDOW);
     if (!pWin)
     {
 	client->errorValue = stuff->window;
 	return BadWindow;
     }
+
     return compUnredirectSubwindows (client, pWin, stuff->update);
 }
 
@@ -184,13 +255,16 @@ ProcCompositeCreateRegionFromBorderClip (ClientPtr client)
     REQUEST(xCompositeCreateRegionFromBorderClipReq);
 
     REQUEST_SIZE_MATCH(xCompositeCreateRegionFromBorderClipReq);
+    /* Unsupported by current architecture and porting is too much effort. */
+    /*
+    VERIFY_WINDOW(pWin, stuff->window, client, DixGetAttrAccess);
+    */
     pWin = (WindowPtr) LookupIDByType (stuff->window, RT_WINDOW);
     if (!pWin)
     {
 	client->errorValue = stuff->window;
 	return BadWindow;
     }
-    
     LEGAL_NEW_RESOURCE (stuff->region, client);
     
     cw = GetCompWindow (pWin);
@@ -206,7 +280,7 @@ ProcCompositeCreateRegionFromBorderClip (ClientPtr client)
     if (!AddResource (stuff->region, RegionResType, (void *) pRegion))
 	return BadAlloc;
 
-    return(client->noClientException);
+    return Success;
 }
 
 static int
@@ -215,35 +289,170 @@ ProcCompositeNameWindowPixmap (ClientPtr client)
     WindowPtr	    pWin;
     CompWindowPtr   cw;
     PixmapPtr	    pPixmap;
+    ScreenPtr pScreen;
+    int rc;
+
     REQUEST(xCompositeNameWindowPixmapReq);
 
     REQUEST_SIZE_MATCH(xCompositeNameWindowPixmapReq);
+    /* Unsupported by current architecture and porting is too much effort. */
+    /*
+    VERIFY_WINDOW(pWin, stuff->window, client, DixGetAttrAccess);
+    */
     pWin = (WindowPtr) LookupIDByType (stuff->window, RT_WINDOW);
     if (!pWin)
     {
 	client->errorValue = stuff->window;
 	return BadWindow;
     }
-    
+
+    pScreen = pWin->drawable.pScreen;
+
+    if (!pWin->viewable)
+        return BadMatch;
+
     LEGAL_NEW_RESOURCE (stuff->pixmap, client);
     
     cw = GetCompWindow (pWin);
     if (!cw)
 	return BadMatch;
 
-    pPixmap = (*pWin->drawable.pScreen->GetWindowPixmap) (pWin);
+    pPixmap = (*pScreen->GetWindowPixmap) (pWin);
     if (!pPixmap)
 	return BadMatch;
 
+    /* security creation/labeling check */
+    /*
+    rc = XaceHook(XACE_RESOURCE_ACCESS, client, stuff->pixmap, RT_PIXMAP,
+                  pPixmap, RT_WINDOW, pWin, DixCreateAccess);
+    */
+    rc = Success;
+    if (rc != Success)
+        return rc;
+
     ++pPixmap->refcnt;
     
     if (!AddResource (stuff->pixmap, RT_PIXMAP, (void *) pPixmap))
 	return BadAlloc;
 
-    return(client->noClientException);
+    /* Unsupported by current architecture. */
+    /*
+    if (pScreen->NameWindowPixmap) {
+        rc = pScreen->NameWindowPixmap(pWin, pPixmap, stuff->pixmap);
+        if (rc != Success) {
+            FreeResource(stuff->pixmap, RT_NONE);
+            return rc;
+        }
+    }
+    */
+
+    return Success;
+}
+
+static int
+ProcCompositeGetOverlayWindow(ClientPtr client)
+{
+    REQUEST(xCompositeGetOverlayWindowReq);
+    xCompositeGetOverlayWindowReply rep;
+    WindowPtr pWin;
+    ScreenPtr pScreen;
+    CompScreenPtr cs;
+    CompOverlayClientPtr pOc;
+    int rc;
+    int n = 0;
+
+    REQUEST_SIZE_MATCH(xCompositeGetOverlayWindowReq);
+    /* Unsupported by current architecture and porting is too much effort. */
+    /*
+    VERIFY_WINDOW(pWin, stuff->window, client, DixGetAttrAccess);
+    */
+    pWin = (WindowPtr) LookupIDByType (stuff->window, RT_WINDOW);
+    if (!pWin)
+    {
+	client->errorValue = stuff->window;
+	return BadWindow;
+    }
+    pScreen = pWin->drawable.pScreen;
+
+    /*
+     * Create an OverlayClient structure to mark this client's
+     * interest in the overlay window
+     */
+    pOc = compCreateOverlayClient(pScreen, client);
+    if (pOc == NULL)
+        return BadAlloc;
+
+    /*
+     * Make sure the overlay window exists
+     */
+    cs = GetCompScreen(pScreen);
+    if (cs->pOverlayWin == NULL)
+        if (!compCreateOverlayWindow(pScreen)) {
+            FreeResource(pOc->resource, RT_NONE);
+            return BadAlloc;
+        }
+
+    /*
+    rc = XaceHook(XACE_RESOURCE_ACCESS, client, cs->pOverlayWin->drawable.id,
+                  RT_WINDOW, cs->pOverlayWin, RT_NONE, NULL, DixGetAttrAccess);
+    */
+    rc = Success;
+    if (rc != Success) {
+        FreeResource(pOc->resource, RT_NONE);
+        return rc;
+    }
+
+    rep = (xCompositeGetOverlayWindowReply) {
+        .type = X_Reply,
+        .sequenceNumber = client->sequence,
+        .length = 0,
+        .overlayWin = cs->pOverlayWin->drawable.id
+    };
+
+    if (client->swapped) {
+        swaps(&rep.sequenceNumber, n);
+        swapl(&rep.length, n);
+        swapl(&rep.overlayWin, n);
+    }
+    WriteToClient(client, sz_xCompositeGetOverlayWindowReply, (char *)&rep);
+
+    return Success;
 }
 
-int (*ProcCompositeVector[CompositeNumberRequests])(ClientPtr) = {
+static int
+ProcCompositeReleaseOverlayWindow(ClientPtr client)
+{
+    REQUEST(xCompositeReleaseOverlayWindowReq);
+    WindowPtr pWin;
+    CompOverlayClientPtr pOc;
+
+    REQUEST_SIZE_MATCH(xCompositeReleaseOverlayWindowReq);
+    /* Unsupported by current architecture and porting is too much effort. */
+    /*
+    VERIFY_WINDOW(pWin, stuff->window, client, DixGetAttrAccess);
+    */
+    pWin = (WindowPtr) LookupIDByType (stuff->window, RT_WINDOW);
+    if (!pWin)
+    {
+	client->errorValue = stuff->window;
+	return BadWindow;
+    }
+
+    /*
+     * Has client queried a reference to the overlay window
+     * on this screen? If not, generate an error.
+     */
+    pOc = compFindOverlayClient(pWin->drawable.pScreen, client);
+    if (pOc == NULL)
+        return BadMatch;
+
+    /* The delete function will free the client structure */
+    FreeResource(pOc->resource, RT_NONE);
+
+    return Success;
+}
+
+static int (*ProcCompositeVector[CompositeNumberRequests])(ClientPtr) = {
     ProcCompositeQueryVersion,
     ProcCompositeRedirectWindow,
     ProcCompositeRedirectSubwindows,
@@ -251,6 +460,7 @@ int (*ProcCompositeVector[CompositeNumberRequests])(ClientPtr) = {
     ProcCompositeUnredirectSubwindows,
     ProcCompositeCreateRegionFromBorderClip,
     ProcCompositeNameWindowPixmap,
+    ProcCompositeGetOverlayWindow, ProcCompositeReleaseOverlayWindow,
 };
 
 static int
@@ -351,7 +561,31 @@ SProcCompositeNameWindowPixmap (ClientPtr client)
     return (*ProcCompositeVector[stuff->compositeReqType]) (client);
 }
 
-int (*SProcCompositeVector[CompositeNumberRequests])(ClientPtr) = {
+static int
+SProcCompositeGetOverlayWindow(ClientPtr client)
+{
+    int n = 0;
+    REQUEST(xCompositeGetOverlayWindowReq);
+
+    swaps(&stuff->length, n);
+    REQUEST_SIZE_MATCH(xCompositeGetOverlayWindowReq);
+    swapl(&stuff->window, n);
+    return (*ProcCompositeVector[stuff->compositeReqType]) (client);
+}
+
+static int
+SProcCompositeReleaseOverlayWindow(ClientPtr client)
+{
+    int n = 0;
+    REQUEST(xCompositeReleaseOverlayWindowReq);
+
+    swaps(&stuff->length, n);
+    REQUEST_SIZE_MATCH(xCompositeReleaseOverlayWindowReq);
+    swapl(&stuff->window, n);
+    return (*ProcCompositeVector[stuff->compositeReqType]) (client);
+}
+
+static int (*SProcCompositeVector[CompositeNumberRequests])(ClientPtr) = {
     SProcCompositeQueryVersion,
     SProcCompositeRedirectWindow,
     SProcCompositeRedirectSubwindows,
@@ -359,6 +593,7 @@ int (*SProcCompositeVector[CompositeNumberRequests])(ClientPtr) = {
     SProcCompositeUnredirectSubwindows,
     SProcCompositeCreateRegionFromBorderClip,
     SProcCompositeNameWindowPixmap,
+    SProcCompositeGetOverlayWindow, SProcCompositeReleaseOverlayWindow,
 };
 
 static int
@@ -372,27 +607,104 @@ SProcCompositeDispatch (ClientPtr client)
 	return BadRequest;
 }
 
+/* Both unused and incompatible due to architecture, disabled. */
+#if 0
+/** @see GetDefaultBytes */
+static void
+GetCompositeClientWindowBytes(void *value, XID id, ResourceSizePtr size)
+{
+    WindowPtr window = value;
+
+    /* Currently only pixmap bytes are reported to clients. */
+    size->resourceSize = 0;
+
+    /* Calculate pixmap reference sizes. */
+    size->pixmapRefSize = 0;
+    if (window->redirectDraw != RedirectDrawNone)
+    {
+        SizeType pixmapSizeFunc = GetResourceTypeSizeFunc(RT_PIXMAP);
+        ResourceSizeRec pixmapSize = { 0, 0 };
+        ScreenPtr screen = window->drawable.pScreen;
+        PixmapPtr pixmap = screen->GetWindowPixmap(window);
+        pixmapSizeFunc(pixmap, pixmap->drawable.id, &pixmapSize);
+        size->pixmapRefSize += pixmapSize.pixmapRefSize;
+    }
+}
+#endif /* 0 */
+
 void
 CompositeExtensionInit (void)
 {
     ExtensionEntry  *extEntry;
     int		    s;
 
+    /* Assume initialization is going to fail */
+    noCompositeExtension = TRUE;
+
+    fprintf(stderr, "COMPOSITE: trying to initialize extension.\n");
+
+    for (s = 0; s < screenInfo.numScreens; s++) {
+        ScreenPtr pScreen = screenInfo.screens[s];
+        VisualPtr vis;
+
+        /* Composite on 8bpp pseudocolor root windows appears to fail, so
+         * just disable it on anything pseudocolor for safety.
+         */
+        for (vis = pScreen->visuals; vis->vid != pScreen->rootVisual; vis++);
+        if ((vis->class | DynamicClass) == PseudoColor)
+            return;
+
+        /* Ensure that Render is initialized, which is required for automatic
+         * compositing.
+         */
+        if (GetPictureScreenIfSet(pScreen) == NULL)
+            return;
+    }
+#ifdef PANORAMIX
+    /* Xinerama's rewriting of window drawing before Composite gets to it
+     * breaks Composite.
+     */
+    if (!noPanoramiXExtension)
+	return;
+#endif
+
     CompositeClientWindowType = CreateNewResourceType (FreeCompositeClientWindow);
     if (!CompositeClientWindowType)
 	return;
 
+    /* SetResourceTypeSizeFunc(CompositeClientWindowType,
+                            GetCompositeClientWindowBytes);
+     */
+
     CompositeClientSubwindowsType = CreateNewResourceType (FreeCompositeClientSubwindows);
     if (!CompositeClientSubwindowsType)
 	return;
 
-    CompositeClientPrivateIndex = AllocateClientPrivateIndex ();
-    if (!AllocateClientPrivate (CompositeClientPrivateIndex, 
+    CompositeClientOverlayType = CreateNewResourceType
+        (FreeCompositeClientOverlay);
+    if (!CompositeClientOverlayType)
+        return;
+
+#ifndef NXAGENT_SERVER
+    if (!dixRegisterPrivateKey(&CompositeClientPrivateKeyRec, PRIVATE_CLIENT,
 				sizeof (CompositeClientRec)))
 	return;
+#else /* !defined(NXAGENT_SERVER) */
+    if ((CompositeClientPrivIndex = AllocateClientPrivateIndex()) < 0)
+        return;
+    if (!AllocateClientPrivate(CompositeClientPrivIndex, sizeof (CompositeClientRec)))
+        return;
+#endif /* !defined(NXAGENT_SERVER) */
+
     if (!AddCallback (&ClientStateCallback, CompositeClientCallback, 0))
 	return;
 
+    for (s = 0; s < screenInfo.numScreens; s++)
+	if (!compScreenInit (screenInfo.screens[s])) {
+            fprintf (stderr, "COMPOSITE: could not initialize via compScreenInit() for screen %d\n", s);
+	    return;
+        }
+
     extEntry = AddExtension (COMPOSITE_NAME, 0, 0,
 			     ProcCompositeDispatch, SProcCompositeDispatch,
 			     CompositeResetProc, StandardMinorOpcode);
@@ -400,10 +712,371 @@ CompositeExtensionInit (void)
 	return;
     CompositeReqCode = (CARD8) extEntry->base;
 
-    
-    for (s = 0; s < screenInfo.numScreens; s++)
-	if (!compScreenInit (screenInfo.screens[s]))
-	    return;
-    miRegisterRedirectBorderClipProc (compSetRedirectBorderClip,
-				      compGetRedirectBorderClip);
+    /* Initialization succeeded */
+    noCompositeExtension = FALSE;
+}
+
+/*
+ * This code requires features the current infrastructure does not provide
+ * and will thus be disabled.
+ */
+#if 0
+
+#ifdef PANORAMIX
+#include "panoramiXsrv.h"
+
+int (*PanoramiXSaveCompositeVector[CompositeNumberRequests]) (ClientPtr);
+
+static int
+PanoramiXCompositeRedirectWindow(ClientPtr client)
+{
+    PanoramiXRes *win;
+    int rc = 0, j;
+
+    REQUEST(xCompositeRedirectWindowReq);
+
+    REQUEST_SIZE_MATCH(xCompositeRedirectWindowReq);
+
+    if ((rc = dixLookupResourceByType((void **) &win, stuff->window, XRT_WINDOW,
+                                      client, DixUnknownAccess))) {
+        client->errorValue = stuff->window;
+        return rc;
+    }
+
+    FOR_NSCREENS_FORWARD(j) {
+        stuff->window = win->info[j].id;
+        rc = (*PanoramiXSaveCompositeVector[stuff->compositeReqType]) (client);
+        if (rc != Success)
+            break;
+    }
+
+    return rc;
+}
+
+static int
+PanoramiXCompositeRedirectSubwindows(ClientPtr client)
+{
+    PanoramiXRes *win;
+    int rc = 0, j;
+
+    REQUEST(xCompositeRedirectSubwindowsReq);
+
+    REQUEST_SIZE_MATCH(xCompositeRedirectSubwindowsReq);
+
+    if ((rc = dixLookupResourceByType((void **) &win, stuff->window, XRT_WINDOW,
+                                      client, DixUnknownAccess))) {
+        client->errorValue = stuff->window;
+        return rc;
+    }
+
+    FOR_NSCREENS_FORWARD(j) {
+        stuff->window = win->info[j].id;
+        rc = (*PanoramiXSaveCompositeVector[stuff->compositeReqType]) (client);
+        if (rc != Success)
+            break;
+    }
+
+    return rc;
+}
+
+static int
+PanoramiXCompositeUnredirectWindow(ClientPtr client)
+{
+    PanoramiXRes *win;
+    int rc = 0, j;
+
+    REQUEST(xCompositeUnredirectWindowReq);
+
+    REQUEST_SIZE_MATCH(xCompositeUnredirectWindowReq);
+
+    if ((rc = dixLookupResourceByType((void **) &win, stuff->window, XRT_WINDOW,
+                                      client, DixUnknownAccess))) {
+        client->errorValue = stuff->window;
+        return rc;
+    }
+
+    FOR_NSCREENS_FORWARD(j) {
+        stuff->window = win->info[j].id;
+        rc = (*PanoramiXSaveCompositeVector[stuff->compositeReqType]) (client);
+        if (rc != Success)
+            break;
+    }
+
+    return rc;
+}
+
+static int
+PanoramiXCompositeUnredirectSubwindows(ClientPtr client)
+{
+    PanoramiXRes *win;
+    int rc = 0, j;
+
+    REQUEST(xCompositeUnredirectSubwindowsReq);
+
+    REQUEST_SIZE_MATCH(xCompositeUnredirectSubwindowsReq);
+
+    if ((rc = dixLookupResourceByType((void **) &win, stuff->window, XRT_WINDOW,
+                                      client, DixUnknownAccess))) {
+        client->errorValue = stuff->window;
+        return rc;
+    }
+
+    FOR_NSCREENS_FORWARD(j) {
+        stuff->window = win->info[j].id;
+        rc = (*PanoramiXSaveCompositeVector[stuff->compositeReqType]) (client);
+        if (rc != Success)
+            break;
+    }
+
+    return rc;
 }
+
+static int
+PanoramiXCompositeNameWindowPixmap(ClientPtr client)
+{
+    WindowPtr pWin;
+    CompWindowPtr cw;
+    PixmapPtr pPixmap;
+    int rc;
+    PanoramiXRes *win, *newPix;
+    int i;
+
+    REQUEST(xCompositeNameWindowPixmapReq);
+
+    REQUEST_SIZE_MATCH(xCompositeNameWindowPixmapReq);
+
+    if ((rc = dixLookupResourceByType((void **) &win, stuff->window, XRT_WINDOW,
+                                      client, DixUnknownAccess))) {
+        client->errorValue = stuff->window;
+        return rc;
+    }
+
+    LEGAL_NEW_RESOURCE(stuff->pixmap, client);
+
+    if (!(newPix = malloc(sizeof(PanoramiXRes))))
+        return BadAlloc;
+
+    newPix->type = XRT_PIXMAP;
+    newPix->u.pix.shared = FALSE;
+    panoramix_setup_ids(newPix, client, stuff->pixmap);
+
+    FOR_NSCREENS(i) {
+        rc = dixLookupResourceByType((void **) &pWin, win->info[i].id,
+                                     RT_WINDOW, client, DixGetAttrAccess);
+        if (rc != Success) {
+            client->errorValue = stuff->window;
+            free(newPix);
+            return rc;
+        }
+
+        if (!pWin->viewable) {
+            free(newPix);
+            return BadMatch;
+        }
+
+        cw = GetCompWindow(pWin);
+        if (!cw) {
+            free(newPix);
+            return BadMatch;
+        }
+
+        pPixmap = (*pWin->drawable.pScreen->GetWindowPixmap) (pWin);
+        if (!pPixmap) {
+            free(newPix);
+            return BadMatch;
+        }
+
+        if (!AddResource(newPix->info[i].id, RT_PIXMAP, (void *) pPixmap))
+            return BadAlloc;
+
+        ++pPixmap->refcnt;
+    }
+
+    if (!AddResource(stuff->pixmap, XRT_PIXMAP, (void *) newPix))
+        return BadAlloc;
+
+    return Success;
+}
+
+static int
+PanoramiXCompositeGetOverlayWindow(ClientPtr client)
+{
+    REQUEST(xCompositeGetOverlayWindowReq);
+    xCompositeGetOverlayWindowReply rep;
+    WindowPtr pWin;
+    ScreenPtr pScreen;
+    CompScreenPtr cs;
+    CompOverlayClientPtr pOc;
+    int rc;
+    PanoramiXRes *win, *overlayWin = NULL;
+    int i;
+    int n = 0;
+
+    REQUEST_SIZE_MATCH(xCompositeGetOverlayWindowReq);
+
+    if ((rc = dixLookupResourceByType((void **) &win, stuff->window, XRT_WINDOW,
+                                      client, DixUnknownAccess))) {
+        client->errorValue = stuff->window;
+        return rc;
+    }
+
+    cs = GetCompScreen(screenInfo.screens[0]);
+    if (!cs->pOverlayWin) {
+        if (!(overlayWin = malloc(sizeof(PanoramiXRes))))
+            return BadAlloc;
+
+        overlayWin->type = XRT_WINDOW;
+        overlayWin->u.win.root = FALSE;
+    }
+
+    FOR_NSCREENS_BACKWARD(i) {
+        rc = dixLookupResourceByType((void **) &pWin, win->info[i].id,
+                                     RT_WINDOW, client, DixGetAttrAccess);
+        if (rc != Success) {
+            client->errorValue = stuff->window;
+            free(overlayWin);
+            return rc;
+        }
+        pScreen = pWin->drawable.pScreen;
+
+        /*
+         * Create an OverlayClient structure to mark this client's
+         * interest in the overlay window
+         */
+        pOc = compCreateOverlayClient(pScreen, client);
+        if (pOc == NULL) {
+            free(overlayWin);
+            return BadAlloc;
+        }
+
+        /*
+         * Make sure the overlay window exists
+         */
+        cs = GetCompScreen(pScreen);
+        if (cs->pOverlayWin == NULL)
+            if (!compCreateOverlayWindow(pScreen)) {
+                FreeResource(pOc->resource, RT_NONE);
+                free(overlayWin);
+                return BadAlloc;
+            }
+
+        /*
+        rc = XaceHook(XACE_RESOURCE_ACCESS, client,
+                      cs->pOverlayWin->drawable.id,
+                      RT_WINDOW, cs->pOverlayWin, RT_NONE, NULL,
+                      DixGetAttrAccess);
+        */
+        rc = Success;
+        if (rc != Success) {
+            FreeResource(pOc->resource, RT_NONE);
+            free(overlayWin);
+            return rc;
+        }
+    }
+
+    if (overlayWin) {
+        FOR_NSCREENS(i) {
+            cs = GetCompScreen(screenInfo.screens[i]);
+            overlayWin->info[i].id = cs->pOverlayWin->drawable.id;
+        }
+
+        AddResource(overlayWin->info[0].id, XRT_WINDOW, overlayWin);
+    }
+
+    cs = GetCompScreen(screenInfo.screens[0]);
+
+    rep = (xCompositeGetOverlayWindowReply) {
+        .type = X_Reply,
+        .sequenceNumber = client->sequence,
+        .length = 0,
+        .overlayWin = cs->pOverlayWin->drawable.id
+    };
+
+    if (client->swapped) {
+        swaps(&rep.sequenceNumber, n);
+        swapl(&rep.length, n);
+        swapl(&rep.overlayWin, n);
+    }
+    WriteToClient(client, sz_xCompositeGetOverlayWindowReply, &rep);
+
+    return Success;
+}
+
+static int
+PanoramiXCompositeReleaseOverlayWindow(ClientPtr client)
+{
+    REQUEST(xCompositeReleaseOverlayWindowReq);
+    WindowPtr pWin;
+    CompOverlayClientPtr pOc;
+    PanoramiXRes *win;
+    int i, rc;
+
+    REQUEST_SIZE_MATCH(xCompositeReleaseOverlayWindowReq);
+
+    if ((rc = dixLookupResourceByType((void **) &win, stuff->window, XRT_WINDOW,
+                                      client, DixUnknownAccess))) {
+        client->errorValue = stuff->window;
+        return rc;
+    }
+
+    FOR_NSCREENS_BACKWARD(i) {
+        if ((rc = dixLookupResourceByType((void **) &pWin, win->info[i].id,
+                                          XRT_WINDOW, client,
+                                          DixUnknownAccess))) {
+            client->errorValue = stuff->window;
+            return rc;
+        }
+
+        /*
+         * Has client queried a reference to the overlay window
+         * on this screen? If not, generate an error.
+         */
+        pOc = compFindOverlayClient(pWin->drawable.pScreen, client);
+        if (pOc == NULL)
+            return BadMatch;
+
+        /* The delete function will free the client structure */
+        FreeResource(pOc->resource, RT_NONE);
+    }
+
+    return Success;
+}
+
+void
+PanoramiXCompositeInit(void)
+{
+    int i;
+
+    for (i = 0; i < CompositeNumberRequests; i++)
+        PanoramiXSaveCompositeVector[i] = ProcCompositeVector[i];
+    /*
+     * Stuff in Xinerama aware request processing hooks
+     */
+    ProcCompositeVector[X_CompositeRedirectWindow] =
+        PanoramiXCompositeRedirectWindow;
+    ProcCompositeVector[X_CompositeRedirectSubwindows] =
+        PanoramiXCompositeRedirectSubwindows;
+    ProcCompositeVector[X_CompositeUnredirectWindow] =
+        PanoramiXCompositeUnredirectWindow;
+    ProcCompositeVector[X_CompositeUnredirectSubwindows] =
+        PanoramiXCompositeUnredirectSubwindows;
+    ProcCompositeVector[X_CompositeNameWindowPixmap] =
+        PanoramiXCompositeNameWindowPixmap;
+    ProcCompositeVector[X_CompositeGetOverlayWindow] =
+        PanoramiXCompositeGetOverlayWindow;
+    ProcCompositeVector[X_CompositeReleaseOverlayWindow] =
+        PanoramiXCompositeReleaseOverlayWindow;
+}
+
+void
+PanoramiXCompositeReset(void)
+{
+    int i;
+
+    for (i = 0; i < CompositeNumberRequests; i++)
+        ProcCompositeVector[i] = PanoramiXSaveCompositeVector[i];
+}
+
+#endif
+
+#endif /* 0 */