Merge branch 'Ionic-feature/composite-update' into 3.6.x

nx-X11/include/extensions/composite.h

@@ -29,7 +29,7 @@
 
 #define COMPOSITE_NAME				"Composite"
 #define COMPOSITE_MAJOR				0
-#define COMPOSITE_MINOR				2
+#define COMPOSITE_MINOR				4
 
 #define CompositeRedirectAutomatic		0
 #define CompositeRedirectManual			1
@@ -41,7 +41,11 @@
 #define X_CompositeUnredirectSubwindows		4
 #define X_CompositeCreateRegionFromBorderClip	5
 #define X_CompositeNameWindowPixmap		6
+#define X_CompositeGetOverlayWindow             7
+#define X_CompositeReleaseOverlayWindow         8
 
-#define CompositeNumberRequests	    (X_CompositeNameWindowPixmap + 1)
+#define CompositeNumberRequests	    (X_CompositeReleaseOverlayWindow + 1)
+
+#define CompositeNumberEvents			0
 
 #endif /* _COMPOSITE_H_ */

nx-X11/include/extensions/compositeproto.h

@@ -30,6 +30,7 @@
 
 #define Window CARD32
 #define Region CARD32
+#define Pixmap CARD32
 
 /* 
  * requests and replies
@@ -129,7 +130,43 @@ typedef struct {
 
 #define sz_xCompositeNameWindowPixmapReq	    12
 
+/* Version 0.3 additions */
+
+typedef struct {
+    CARD8   reqType;
+    CARD8   compositeReqType;
+    CARD16  length B16;
+    Window  window B32;
+} xCompositeGetOverlayWindowReq;
+
+#define sz_xCompositeGetOverlayWindowReq sizeof(xCompositeGetOverlayWindowReq)
+
+typedef struct {
+    BYTE    type;   /* X_Reply */
+    BYTE    pad1;
+    CARD16  sequenceNumber B16;
+    CARD32  length B32;
+    Window  overlayWin B32;
+    CARD32  pad2 B32;
+    CARD32  pad3 B32;
+    CARD32  pad4 B32;
+    CARD32  pad5 B32;
+    CARD32  pad6 B32;
+} xCompositeGetOverlayWindowReply;
+
+#define sz_xCompositeGetOverlayWindowReply sizeof(xCompositeGetOverlayWindowReply)
+
+typedef struct {
+    CARD8   reqType;
+    CARD8   compositeReqType;
+    CARD16  length B16;
+    Window  window B32;
+} xCompositeReleaseOverlayWindowReq;
+
+#define sz_xCompositeReleaseOverlayWindowReq sizeof(xCompositeReleaseOverlayWindowReq)
+
 #undef Window
 #undef Region
+#undef Pixmap
 
 #endif /* _COMPOSITEPROTO_H_ */

nx-X11/programs/Xserver/composite/Imakefile

 #include <Server.tmpl>
 
-       SRCS =	compalloc.c compext.c compinit.c compwindow.c
+       SRCS =	compalloc.c compext.c compinit.c compoverlay.c compwindow.c
 
-       OBJS =	compalloc.o compext.o compinit.o compwindow.o
+       OBJS =	compalloc.o compext.o compinit.o compoverlay.o compwindow.o
 
    INCLUDES =   -I../include -I../mi -I../Xext -I../render -I../xfixes \
 		-I../damageext -I../miext/damage -I$(EXTINCSRC) \
@@ -11,6 +11,8 @@
 
    LINTLIBS = ../dix/llib-ldix.ln ../os/llib-los.ln
 
+   DEFINES = -DNXAGENT_SERVER
+
 NormalLibraryTarget(composite,$(OBJS))
 NormalLibraryObjectRule()
 LintLibraryTarget(composite,$(SRCS))

nx-X11/programs/Xserver/composite/compint.h

@@ -51,6 +51,7 @@
 #include "damageextint.h"
 #include "xfixes.h"
 #include <nx-X11/extensions/compositeproto.h>
+#include "compositeext.h"
 #include <assert.h>
 
 /*
@@ -58,6 +59,7 @@
  
     #define COMPOSITE_DEBUG
  */
+#define COMPOSITE_DEBUG
 
 typedef struct _CompClientWindow {
     struct _CompClientWindow	*next;
@@ -89,11 +91,19 @@ typedef struct _CompSubwindows {
 #define COMP_INCLUDE_RGB24_VISUAL 0
 #endif
 
-#if COMP_INCLUDE_RGB24_VISUAL
-#define NUM_COMP_ALTERNATE_VISUALS  2
-#else
-#define NUM_COMP_ALTERNATE_VISUALS  1
-#endif
+typedef struct _CompOverlayClientRec *CompOverlayClientPtr;
+
+typedef struct _CompOverlayClientRec {
+    CompOverlayClientPtr pNext;
+    ClientPtr pClient;
+    ScreenPtr pScreen;
+    XID resource;
+} CompOverlayClientRec;
+
+typedef struct _CompImplicitRedirectException {
+    XID parentVisual;
+    XID winVisual;
+} CompImplicitRedirectException;
 
 typedef struct _CompScreen {
     PositionWindowProcPtr	PositionWindow;
@@ -102,13 +112,21 @@ typedef struct _CompScreen {
     DestroyWindowProcPtr	DestroyWindow;
     RealizeWindowProcPtr	RealizeWindow;
     UnrealizeWindowProcPtr	UnrealizeWindow;
-    PaintWindowProcPtr		PaintWindowBackground;
     ClipNotifyProcPtr		ClipNotify;
     /*
      * Called from ConfigureWindow, these
      * three track changes to the offscreen storage
      * geometry
      */
+
+    /*
+     * Unsupported by our old Xserver infrastructure, replaced with direct calls to
+     * compReallocPixmap().
+     */
+    /*
+    ConfigNotifyProcPtr ConfigNotify;
+    */
+
     MoveWindowProcPtr		MoveWindow;
     ResizeWindowProcPtr		ResizeWindow;
     ChangeBorderWidthProcPtr	ChangeBorderWidth;
@@ -122,30 +140,79 @@ typedef struct _CompScreen {
      */
     InstallColormapProcPtr	InstallColormap;
 
+    /*
+     * Fake backing store via automatic redirection
+     */
+    ChangeWindowAttributesProcPtr ChangeWindowAttributes;
+
     ScreenBlockHandlerProcPtr	BlockHandler;
     CloseScreenProcPtr		CloseScreen;
-    Bool			damaged;
-    XID				alternateVisuals[NUM_COMP_ALTERNATE_VISUALS];
+    Bool		        damaged;
+    int numAlternateVisuals;
+    VisualID *alternateVisuals;
+    int numImplicitRedirectExceptions;
+    CompImplicitRedirectException *implicitRedirectExceptions;
+
+    WindowPtr pOverlayWin;
+    Window overlayWid;
+    CompOverlayClientPtr pOverlayClients;
+
+    GetImageProcPtr GetImage;
+    GetSpansProcPtr GetSpans;
+    SourceValidateProcPtr SourceValidate;
 } CompScreenRec, *CompScreenPtr;
 
-extern int  CompScreenPrivateIndex;
-extern int  CompWindowPrivateIndex;
-extern int  CompSubwindowsPrivateIndex;
+#ifndef NXAGENT_SERVER
+extern DevPrivateKeyRec CompScreenPrivateKeyRec;
 
-#define GetCompScreen(s) ((CompScreenPtr) ((s)->devPrivates[CompScreenPrivateIndex].ptr))
-#define GetCompWindow(w) ((CompWindowPtr) ((w)->devPrivates[CompWindowPrivateIndex].ptr))
-#define GetCompSubwindows(w) ((CompSubwindowsPtr) ((w)->devPrivates[CompSubwindowsPrivateIndex].ptr))
+#define CompScreenPrivateKey (&CompScreenPrivateKeyRec)
+
+extern DevPrivateKeyRec CompWindowPrivateKeyRec;
+
+#define CompWindowPrivateKey (&CompWindowPrivateKeyRec)
+
+extern DevPrivateKeyRec CompSubwindowsPrivateKeyRec;
+
+#define CompSubwindowsPrivateKey (&CompSubwindowsPrivateKeyRec)
+
+#define GetCompScreen(s) ((CompScreenPtr) \
+    dixLookupPrivate(&(s)->devPrivates, CompScreenPrivateKey))
+#define GetCompWindow(w) ((CompWindowPtr) \
+    dixLookupPrivate(&(w)->devPrivates, CompWindowPrivateKey))
+#define GetCompSubwindows(w) ((CompSubwindowsPtr) \
+    dixLookupPrivate(&(w)->devPrivates, CompSubwindowsPrivateKey))
+#else /* !defined(NXAGENT_SERVER) */
+extern int CompScreenPrivIndex;
+extern int CompWindowPrivIndex;
+extern int CompSubwindowsPrivIndex;
+
+#define GetCompScreen(s) ((CompScreenPtr) (s)->devPrivates[CompScreenPrivIndex].ptr)
+#define GetCompWindow(w) ((CompWindowPtr) (w)->devPrivates[CompWindowPrivIndex].ptr)
+#define GetCompSubwindows(w) ((CompSubwindowsPtr) (w)->devPrivates[CompSubwindowsPrivIndex].ptr)
+#endif /* !defined(NXAGENT_SERVER) */
 
-extern RESTYPE		CompositeClientWindowType;
 extern RESTYPE		CompositeClientSubwindowsType;
+extern RESTYPE CompositeClientOverlayType;
+
+/* Shim for less ifdefs within the actual code. */
+#ifndef NXAGENT_SERVER
+#define FAKE_DIX_SET_PRIVATE_IMPL(obj, privateKey, ptr_val) do { dixSetPrivate(&(obj)->devPrivates, privateKey, ptr_val); } while (0)
+
+#define FAKE_DIX_SET_SCREEN_PRIVATE(pScreen, ptr_val) FAKE_DIX_SET_PRIVATE_IMPL(pScreen, CompScreenPrivateKey, ptr_val)
+#define FAKE_DIX_SET_WINDOW_PRIVATE(pWin, ptr_val) FAKE_DIX_SET_PRIVATE_IMPL(pWin, CompWindowPrivateKey, ptr_val)
+#define FAKE_DIX_SET_SUBWINDOWS_PRIVATE(pWin, ptr_val) FAKE_DIX_SET_PRIVATE_IMPL(pWin, CompSubwindowsPrivateKey, ptr_val)
+#else /* !defined(NXAGENT_SERVER) */
+#define FAKE_DIX_SET_PRIVATE_IMPL(obj, privIndex, ptr_val) do { (obj)->devPrivates[privIndex].ptr = (void *) (ptr_val); } while (0)
+
+#define FAKE_DIX_SET_SCREEN_PRIVATE(pScreen, ptr_val) FAKE_DIX_SET_PRIVATE_IMPL(pScreen, CompScreenPrivIndex, ptr_val)
+#define FAKE_DIX_SET_WINDOW_PRIVATE(pWin, ptr_val) FAKE_DIX_SET_PRIVATE_IMPL(pWin, CompWindowPrivIndex, ptr_val)
+#define FAKE_DIX_SET_SUBWINDOWS_PRIVATE(pWin, ptr_val) FAKE_DIX_SET_PRIVATE_IMPL(pWin, CompSubwindowsPrivIndex, ptr_val)
+#endif /* !defined(NXAGENT_SERVER) */
 
 /*
  * compalloc.c
  */
 
-void
-compReportDamage (DamagePtr pDamage, RegionPtr pRegion, void *closure);
-
 Bool
 compRedirectWindow (ClientPtr pClient, WindowPtr pWin, int update);
 
@@ -174,25 +241,40 @@ Bool
 compAllocPixmap (WindowPtr pWin);
 
 void
-compFreePixmap (WindowPtr pWin);
+ compSetParentPixmap(WindowPtr pWin);
+
+void
+ compRestoreWindow(WindowPtr pWin, PixmapPtr pPixmap);
 
 Bool
 compReallocPixmap (WindowPtr pWin, int x, int y,
 		   unsigned int w, unsigned int h, int bw);
 
 /*
- * compext.c
+ * compinit.c
  */
 
-void
-CompositeExtensionInit (void);
+Bool
+ compScreenInit(ScreenPtr pScreen);
 
 /*
- * compinit.c
+ * compoverlay.c
  */
 
+void
+ compFreeOverlayClient(CompOverlayClientPtr pOcToDel);
+
+CompOverlayClientPtr
+compFindOverlayClient(ScreenPtr pScreen, ClientPtr pClient);
+
+CompOverlayClientPtr
+compCreateOverlayClient(ScreenPtr pScreen, ClientPtr pClient);
+
 Bool
-compScreenInit (ScreenPtr pScreen);
+ compCreateOverlayWindow(ScreenPtr pScreen);
+
+void
+ compDestroyOverlayWindow(ScreenPtr pScreen);
 
 /*
  * compwindow.c
@@ -205,6 +287,9 @@ compCheckTree (ScreenPtr pScreen);
 #define compCheckTree(s)
 #endif
 
+PictFormatPtr
+compWindowFormat (WindowPtr pWin);
+
 void
 compSetPixmap (WindowPtr pWin, PixmapPtr pPixmap);
 
@@ -220,8 +305,6 @@ compRealizeWindow (WindowPtr pWin);
 Bool
 compUnrealizeWindow (WindowPtr pWin);
 
-void
-compPaintWindowBackground (WindowPtr pWin, RegionPtr pRegion, int what);
 
 void
 compClipNotify (WindowPtr pWin, int dx, int dy);
@@ -255,6 +338,25 @@ void
 compCopyWindow (WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc);
 
 void
-compWindowUpdate (WindowPtr pWin);
+ compPaintChildrenToWindow(ScreenPtr pScreen, WindowPtr pWin);
+
+WindowPtr
+ CompositeRealChildHead(WindowPtr pWin);
+
+int
+ DeleteWindowNoInputDevices(void *value, XID wid);
+
+/*
+ * Unsupported by our old Xserver infrastructure, replaced with direct calls to
+ * compReallocPixmap().
+ */
+/*
+int
+compConfigNotify(WindowPtr pWin, int x, int y, int w, int h,
+                 int bw, WindowPtr pSib);
+*/
+
+void PanoramiXCompositeInit(void);
+void PanoramiXCompositeReset(void);
 
 #endif /* _COMPINT_H_ */

nx-X11/programs/Xserver/composite/compositeext.h

+/*
+ * Copyright © 2009 NVIDIA Corporation
+ *
+ * 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.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#ifndef _COMPOSITEEXT_H_
+#define _COMPOSITEEXT_H_
+
+#include "misc.h"
+#include "scrnintstr.h"
+
+extern _X_EXPORT Bool CompositeRegisterAlternateVisuals(ScreenPtr pScreen,
+                                                        VisualID * vids,
+                                                        int nVisuals);
+
+extern _X_EXPORT Bool CompositeRegisterImplicitRedirectionException(ScreenPtr pScreen,
+                                                                    VisualID parentVisual,
+                                                                    VisualID winVisual);
+
+extern _X_EXPORT RESTYPE CompositeClientWindowType;
+
+#endif                          /* _COMPOSITEEXT_H_ */

nx-X11/programs/Xserver/composite/compoverlay.c

+/*
+ * Copyright (c) 2006, Oracle and/or its affiliates. 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"
+#ifndef NXAGENT_SERVER
+#include "xace.h"
+#endif
+
+#ifdef PANORAMIX
+#include "panoramiXsrv.h"
+#endif
+
+/*
+ * Delete the given overlay client list element from its screen list.
+ */
+void
+compFreeOverlayClient(CompOverlayClientPtr pOcToDel)
+{
+    ScreenPtr pScreen = pOcToDel->pScreen;
+    CompScreenPtr cs = GetCompScreen(pScreen);
+    CompOverlayClientPtr *pPrev, pOc;
+
+    for (pPrev = &cs->pOverlayClients; (pOc = *pPrev); pPrev = &pOc->pNext) {
+        if (pOc == pOcToDel) {
+            *pPrev = pOc->pNext;
+            free(pOc);
+            break;
+        }
+    }
+
+    /* Destroy overlay window when there are no more clients using it */
+    if (cs->pOverlayClients == NULL)
+        compDestroyOverlayWindow(pScreen);
+}
+
+/*
+ * Return the client's first overlay client rec from the given screen
+ */
+CompOverlayClientPtr
+compFindOverlayClient(ScreenPtr pScreen, ClientPtr pClient)
+{
+    CompScreenPtr cs = GetCompScreen(pScreen);
+    CompOverlayClientPtr pOc;
+
+    for (pOc = cs->pOverlayClients; pOc != NULL; pOc = pOc->pNext)
+        if (pOc->pClient == pClient)
+            return pOc;
+
+    return NULL;
+}
+
+/*
+ * Create an overlay client object for the given client
+ */
+CompOverlayClientPtr
+compCreateOverlayClient(ScreenPtr pScreen, ClientPtr pClient)
+{
+    CompScreenPtr cs = GetCompScreen(pScreen);
+    CompOverlayClientPtr pOc;
+
+    pOc = (CompOverlayClientPtr) malloc(sizeof(CompOverlayClientRec));
+    if (pOc == NULL)
+        return NULL;
+
+    pOc->pClient = pClient;
+    pOc->pScreen = pScreen;
+    pOc->resource = FakeClientID(pClient->index);
+    pOc->pNext = cs->pOverlayClients;
+    cs->pOverlayClients = pOc;
+
+    /*
+     * Create a resource for this element so it can be deleted
+     * when the client goes away.
+     */
+    if (!AddResource(pOc->resource, CompositeClientOverlayType, (void *) pOc))
+        return NULL;
+
+    return pOc;
+}
+
+/*
+ * Create the overlay window and map it
+ */
+Bool
+compCreateOverlayWindow(ScreenPtr pScreen)
+{
+    CompScreenPtr cs = GetCompScreen(pScreen);
+    WindowPtr pRoot = WindowTable[pScreen->myNum];
+    WindowPtr pWin;
+    XID attrs[] = { None, TRUE };       /* backPixmap, overrideRedirect */
+    int result;
+    int w = pScreen->width;
+    int h = pScreen->height;
+    int x = 0, y = 0;
+
+  /* Unsupported by current architecture, disabled. */
+#if 0
+#ifdef PANORAMIX
+    if (!noPanoramiXExtension) {
+        x = -pScreen->x;
+        y = -pScreen->y;
+        w = PanoramiXPixWidth;
+        h = PanoramiXPixHeight;
+    }
+#endif
+#endif
+
+    pWin = cs->pOverlayWin =
+        CreateWindow(cs->overlayWid, pRoot, x, y, w, h, 0,
+                     InputOutput, CWBackPixmap | CWOverrideRedirect, &attrs[0],
+                     pRoot->drawable.depth,
+                     serverClient, pScreen->rootVisual, &result);
+    if (pWin == NULL)
+        return FALSE;
+
+    if (!AddResource(pWin->drawable.id, RT_WINDOW, (void *) pWin))
+        return FALSE;
+
+    MapWindow(pWin, serverClient);
+
+    return TRUE;
+}
+
+/*
+ * Destroy the overlay window
+ */
+void
+compDestroyOverlayWindow(ScreenPtr pScreen)
+{
+    CompScreenPtr cs = GetCompScreen(pScreen);
+
+    cs->pOverlayWin = NullWindow;
+    FreeResource(cs->overlayWid, RT_NONE);
+}

nx-X11/programs/Xserver/dix/colormap.c

@@ -2791,3 +2791,80 @@ IsMapInstalled(Colormap map, WindowPtr pWin)
     DEALLOCATE_LOCAL(pmaps);
     return (found);
 }
+
+struct colormap_lookup_data {
+    ScreenPtr pScreen;
+    VisualPtr visuals;
+};
+
+static void
+_colormap_find_resource(void *value, XID id, void *cdata)
+{
+    struct colormap_lookup_data *cmap_data = cdata;
+    VisualPtr visuals = cmap_data->visuals;
+    ScreenPtr pScreen = cmap_data->pScreen;
+    ColormapPtr cmap = value;
+    int j;
+
+    if (pScreen != cmap->pScreen)
+        return;
+
+    j = cmap->pVisual - pScreen->visuals;
+    cmap->pVisual = &visuals[j];
+}
+
+/* something has realloced the visuals, instead of breaking
+   ABI fix it up here - glx and compsite did this wrong */
+Bool
+ResizeVisualArray(ScreenPtr pScreen, int new_visual_count, DepthPtr depth)
+{
+    struct colormap_lookup_data cdata;
+    int numVisuals;
+    VisualPtr visuals;
+    XID *vids, vid;
+    int first_new_vid, first_new_visual, i;
+
+    first_new_vid = depth->numVids;
+    first_new_visual = pScreen->numVisuals;
+
+#if 0 /* !defined(NXAGENT_SERVER) */
+    vids = reallocarray(depth->vids, depth->numVids + new_visual_count,
+                        sizeof(XID));
+#else
+    vids = xrealloc(depth->vids, sizeof(XID) *
+                    (depth->numVids + new_visual_count));
+#endif
+    if (!vids)
+        return FALSE;
+
+    /* its realloced now no going back if we fail the next one */
+    depth->vids = vids;
+
+    numVisuals = pScreen->numVisuals + new_visual_count;
+#if 0 /* !defined(NXAGENT_SERVER) */
+    visuals = reallocarray(pScreen->visuals, numVisuals, sizeof(VisualRec));
+#else
+    visuals = xrealloc(pScreen->visuals, sizeof(VisualRec) * numVisuals);
+#endif
+    if (!visuals) {
+        return FALSE;
+    }
+
+    cdata.visuals = visuals;
+    cdata.pScreen = pScreen;
+    FindClientResourcesByType(serverClient, RT_COLORMAP,
+                              _colormap_find_resource, &cdata);
+
+    pScreen->visuals = visuals;
+
+    for (i = 0; i < new_visual_count; i++) {
+        vid = FakeClientID(0);
+        pScreen->visuals[first_new_visual + i].vid = vid;
+        vids[first_new_vid + i] = vid;
+    }
+
+    depth->numVids += new_visual_count;
+    pScreen->numVisuals += new_visual_count;
+
+    return TRUE;
+}

nx-X11/programs/Xserver/dix/window.c

@@ -535,9 +535,21 @@ ClippedRegionFromBox(register WindowPtr pWin, RegionPtr Rgn,
     RegionIntersect(Rgn, Rgn, &pWin->winSize);
 }
 
+static RealChildHeadProc realChildHeadProc = NULL;
+
+void
+RegisterRealChildHeadProc (RealChildHeadProc proc)
+{
+    realChildHeadProc = proc;
+}
+
 WindowPtr
 RealChildHead(register WindowPtr pWin)
 {
+    if (realChildHeadProc) {
+        return realChildHeadProc (pWin);
+    }
+
     if (!pWin->parent &&
 	(screenIsSaved == SCREEN_SAVER_ON) &&
 	(HasSaverWindow (pWin->drawable.pScreen->myNum)))

nx-X11/programs/Xserver/hw/nxagent/NXcompositeext.h

@@ -33,7 +33,7 @@
 
 #define COMPOSITE_NAME				"Composite"
 #define COMPOSITE_MAJOR				0
-#define COMPOSITE_MINOR				2
+#define COMPOSITE_MINOR				4
 
 #define CompositeRedirectAutomatic		0
 #define CompositeRedirectManual			1
@@ -45,7 +45,11 @@
 #define X_CompositeUnredirectSubwindows		4
 #define X_CompositeCreateRegionFromBorderClip	5
 #define X_CompositeNameWindowPixmap		6
+#define X_CompositeGetOverlayWindow             7
+#define X_CompositeReleaseOverlayWindow         8
 
-#define CompositeNumberRequests	    (X_CompositeNameWindowPixmap + 1)
+#define CompositeNumberRequests	    (X_CompositeReleaseOverlayWindow + 1)
+
+#define CompositeNumberEvents			0
 
 #endif /* _COMPOSITE_H_ */

nx-X11/programs/Xserver/hw/nxagent/NXpicture.c

@@ -1800,6 +1800,99 @@ FreePictFormat (void *	pPictFormat,
     return Success;
 }
 
+/**
+ * ReduceCompositeOp is used to choose simpler ops for cases where alpha
+ * channels are always one and so math on the alpha channel per pixel becomes
+ * unnecessary.  It may also avoid destination reads sometimes if apps aren't
+ * being careful to avoid these cases.
+ */
+static CARD8
+ReduceCompositeOp (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst)
+{
+    Bool no_src_alpha, no_dst_alpha;
+
+    no_src_alpha = PICT_FORMAT_COLOR(pSrc->format) &&
+                   PICT_FORMAT_A(pSrc->format) == 0 &&
+                   pSrc->alphaMap == NULL &&
+                   pMask == NULL;
+    no_dst_alpha = PICT_FORMAT_COLOR(pDst->format) &&
+                   PICT_FORMAT_A(pDst->format) == 0 &&
+                   pDst->alphaMap == NULL;
+
+    /* TODO, maybe: Conjoint and Disjoint op reductions? */
+ 
+    /* Deal with simplifications where the source alpha is always 1. */
+    if (no_src_alpha)
+    {
+	switch (op) {
+	case PictOpOver:
+	    op = PictOpSrc;
+	    break;
+	case PictOpInReverse:
+	    op = PictOpDst;
+	    break;
+	case PictOpOutReverse:
+	    op = PictOpClear;
+	    break;
+	case PictOpAtop:
+	    op = PictOpIn;
+	    break;
+	case PictOpAtopReverse:
+	    op = PictOpOverReverse;
+	    break;
+	case PictOpXor:
+	    op = PictOpOut;
+	    break;
+	default:
+	    break;
+	}
+    }
+
+    /* Deal with simplifications when the destination alpha is always 1 */
+    if (no_dst_alpha)
+    {
+	switch (op) {
+	case PictOpOverReverse:
+	    op = PictOpDst;
+	    break;
+	case PictOpIn:
+	    op = PictOpSrc;
+	    break;
+	case PictOpOut:
+	    op = PictOpClear;
+	    break;
+	case PictOpAtop:
+	    op = PictOpOver;
+	    break;
+	case PictOpXor:
+	    op = PictOpOutReverse;
+	    break;
+	default:
+	    break;
+	}
+    }
+
+    /* Reduce some con/disjoint ops to the basic names. */
+    switch (op) {
+    case PictOpDisjointClear:
+    case PictOpConjointClear:
+	op = PictOpClear;
+	break;
+    case PictOpDisjointSrc:
+    case PictOpConjointSrc:
+	op = PictOpSrc;
+	break;
+    case PictOpDisjointDst:
+    case PictOpConjointDst:
+	op = PictOpDst;
+	break;
+    default:
+	break;
+    }
+
+    return op;
+}
+
 void
 CompositePicture (CARD8		op,
 		  PicturePtr	pSrc,
@@ -1820,6 +1913,11 @@ CompositePicture (CARD8		op,
     if (pMask)
 	ValidatePicture (pMask);
     ValidatePicture (pDst);
+
+    op = ReduceCompositeOp (op, pSrc, pMask, pDst);
+    if (op == PictOpDst)
+	return;
+
     (*ps->Composite) (op,
 		       pSrc,
 		       pMask,

nx-X11/programs/Xserver/hw/nxagent/NXwindow.c

@@ -717,6 +717,14 @@ ClippedRegionFromBox(register WindowPtr pWin, RegionPtr Rgn,
     RegionIntersect(Rgn, Rgn, &pWin->winSize);
 }
 
+static RealChildHeadProc realChildHeadProc = NULL;
+
+void
+RegisterRealChildHeadProc (RealChildHeadProc proc)
+{
+    realChildHeadProc = proc;
+}
+
 WindowPtr
 RealChildHead(register WindowPtr pWin)
 {

nx-X11/programs/Xserver/include/colormap.h

@@ -181,4 +181,8 @@ extern int IsMapInstalled(
     Colormap /*map*/,
     WindowPtr /*pWin*/);
 
+extern Bool ResizeVisualArray(ScreenPtr /* pScreen */ ,
+                              int /* new_vis_count */ ,
+                              DepthPtr /* depth */ );
+
 #endif /* CMAP_H */

nx-X11/programs/Xserver/include/window.h

@@ -102,6 +102,10 @@ extern void ClippedRegionFromBox(
     int /*w*/,
     int /*h*/);
 
+typedef WindowPtr (* RealChildHeadProc) (WindowPtr pWin);
+
+void RegisterRealChildHeadProc (RealChildHeadProc proc);
+
 extern WindowPtr RealChildHead(
     WindowPtr /*pWin*/);
 

nx-X11/programs/Xserver/include/windowstr.h

@@ -96,6 +96,33 @@ typedef struct _WindowOpt {
 #define BackgroundPixel	    2L
 #define BackgroundPixmap    3L
 
+/*
+ * The redirectDraw field can have one of three values:
+ *
+ *  RedirectDrawNone
+ *	A normal window; painted into the same pixmap as the parent
+ *	and clipping parent and siblings to its geometry. These
+ *	windows get a clip list equal to the intersection of their
+ *	geometry with the parent geometry, minus the geometry
+ *	of overlapping None and Clipped siblings.
+ *  RedirectDrawAutomatic
+ *	A redirected window which clips parent and sibling drawing.
+ *	Contents for these windows are manage inside the server.
+ *	These windows get an internal clip list equal to their
+ *	geometry.
+ *  RedirectDrawManual
+ *	A redirected window which does not clip parent and sibling
+ *	drawing; the window must be represented within the parent
+ *	geometry by the client performing the redirection management.
+ *	Contents for these windows are managed outside the server.
+ *	These windows get an internal clip list equal to their
+ *	geometry.
+ */
+
+#define RedirectDrawNone	0
+#define RedirectDrawAutomatic	1
+#define RedirectDrawManual	2
+
 typedef struct _Window {
     DrawableRec		drawable;
     WindowPtr		parent;		/* ancestor chain */
@@ -138,7 +165,7 @@ typedef struct _Window {
     unsigned		srcBuffer:1;	/* source buffer for rendering */
 #endif
 #ifdef COMPOSITE
-    unsigned		redirectDraw:1;	/* rendering is redirected from here */
+    unsigned		redirectDraw:2;	/* rendering is redirected from here */
 #endif
     DevUnion		*devPrivates;
 } WindowRec;

nx-X11/programs/Xserver/render/picture.c

@@ -1649,6 +1649,99 @@ FreePictFormat (void *	pPictFormat,
     return Success;
 }
 
+/**
+ * ReduceCompositeOp is used to choose simpler ops for cases where alpha
+ * channels are always one and so math on the alpha channel per pixel becomes
+ * unnecessary.  It may also avoid destination reads sometimes if apps aren't
+ * being careful to avoid these cases.
+ */
+static CARD8
+ReduceCompositeOp (CARD8 op, PicturePtr pSrc, PicturePtr pMask, PicturePtr pDst)
+{
+    Bool no_src_alpha, no_dst_alpha;
+
+    no_src_alpha = PICT_FORMAT_COLOR(pSrc->format) &&
+                   PICT_FORMAT_A(pSrc->format) == 0 &&
+                   pSrc->alphaMap == NULL &&
+                   pMask == NULL;
+    no_dst_alpha = PICT_FORMAT_COLOR(pDst->format) &&
+                   PICT_FORMAT_A(pDst->format) == 0 &&
+                   pDst->alphaMap == NULL;
+
+    /* TODO, maybe: Conjoint and Disjoint op reductions? */
+ 
+    /* Deal with simplifications where the source alpha is always 1. */
+    if (no_src_alpha)
+    {
+	switch (op) {
+	case PictOpOver:
+	    op = PictOpSrc;
+	    break;
+	case PictOpInReverse:
+	    op = PictOpDst;
+	    break;
+	case PictOpOutReverse:
+	    op = PictOpClear;
+	    break;
+	case PictOpAtop:
+	    op = PictOpIn;
+	    break;
+	case PictOpAtopReverse:
+	    op = PictOpOverReverse;
+	    break;
+	case PictOpXor:
+	    op = PictOpOut;
+	    break;
+	default:
+	    break;
+	}
+    }
+
+    /* Deal with simplifications when the destination alpha is always 1 */
+    if (no_dst_alpha)
+    {
+	switch (op) {
+	case PictOpOverReverse:
+	    op = PictOpDst;
+	    break;
+	case PictOpIn:
+	    op = PictOpSrc;
+	    break;
+	case PictOpOut:
+	    op = PictOpClear;
+	    break;
+	case PictOpAtop:
+	    op = PictOpOver;
+	    break;
+	case PictOpXor:
+	    op = PictOpOutReverse;
+	    break;
+	default:
+	    break;
+	}
+    }
+
+    /* Reduce some con/disjoint ops to the basic names. */
+    switch (op) {
+    case PictOpDisjointClear:
+    case PictOpConjointClear:
+	op = PictOpClear;
+	break;
+    case PictOpDisjointSrc:
+    case PictOpConjointSrc:
+	op = PictOpSrc;
+	break;
+    case PictOpDisjointDst:
+    case PictOpConjointDst:
+	op = PictOpDst;
+	break;
+    default:
+	break;
+    }
+
+    return op;
+}
+
 void
 CompositePicture (CARD8		op,
 		  PicturePtr	pSrc,
@@ -1669,6 +1762,11 @@ CompositePicture (CARD8		op,
     if (pMask)
 	ValidatePicture (pMask);
     ValidatePicture (pDst);
+
+    op = ReduceCompositeOp (op, pSrc, pMask, pDst);
+    if (op == PictOpDst)
+	return;
+
     (*ps->Composite) (op,
 		       pSrc,
 		       pMask,