File xserver-bg-none-root.patch of Package xorg-x11-server

From a3e15680da24cb8259f6a83dee0c930dab024290 Mon Sep 17 00:00:00 2001
From: Kristian <krh@redhat.com>
Date: Fri, 15 Aug 2008 15:15:14 +1000
Subject: [PATCH] Add nr for background=none root

---
 dix/globals.c                |    1 +
 dix/window.c                 |   22 ++++++++++++----------
 hw/xfree86/common/xf86Init.c |   11 +++++++++++
 hw/xfree86/common/xf86str.h  |    5 ++++-
 include/opaque.h             |    1 +
 os/utils.c                   |    3 +++
 6 files changed, 32 insertions(+), 11 deletions(-)

Index: xorg-server-1.8.0/dix/globals.c
===================================================================
Index: xorg-server-1.8.0/dix/window.c
===================================================================
--- xorg-server-1.8.0.orig/dix/window.c
+++ xorg-server-1.8.0/dix/window.c
@@ -465,23 +465,24 @@ InitRootWindow(WindowPtr pWin)
     pWin->cursorIsNone = FALSE;
     pWin->optional->cursor = rootCursor;
     rootCursor->refcnt++;
-
+    pWin->backingStore = defaultBackingStore;
+    pWin->forcedBS = (defaultBackingStore != NotUseful);
 
     if (party_like_its_1989) {
         MakeRootTile(pWin);
         backFlag |= CWBackPixmap;
+        pScreen->ChangeWindowAttributes(pWin, backFlag);
+    } else if (bgNoneRoot) {
+	/* nothing, handled in xf86CreateRootWindow */
     } else {
 	if (whiteRoot)
             pWin->background.pixel = pScreen->whitePixel;
         else
             pWin->background.pixel = pScreen->blackPixel;
         backFlag |= CWBackPixel;
-    } 
 
-    pWin->backingStore = defaultBackingStore;
-    pWin->forcedBS = (defaultBackingStore != NotUseful);
-    /* We SHOULD check for an error value here XXX */
-    (*pScreen->ChangeWindowAttributes)(pWin, backFlag);
+        pScreen->ChangeWindowAttributes(pWin, backFlag);
+    }
 
     MapWindow(pWin, serverClient);
 }
Index: xorg-server-1.8.0/hw/xfree86/common/xf86Init.c
===================================================================
Index: xorg-server-1.8.0/hw/xfree86/common/xf86str.h
===================================================================
--- xorg-server-1.8.0.orig/hw/xfree86/common/xf86str.h
+++ xorg-server-1.8.0/hw/xfree86/common/xf86str.h
@@ -503,7 +503,7 @@ typedef struct _confdrirec {
 } confDRIRec, *confDRIPtr;
 
 /* These values should be adjusted when new fields are added to ScrnInfoRec */
-#define NUM_RESERVED_INTS		16
+#define NUM_RESERVED_INTS		15
 #define NUM_RESERVED_POINTERS		14
 #define NUM_RESERVED_FUNCS		11
 
@@ -775,6 +775,9 @@ typedef struct _ScrnInfoRec {
     ClockRangePtr	clockRanges;
     int			adjustFlags;
 
+    /* -nr support */
+    int			canDoBGNoneRoot;
+
     /*
      * These can be used when the minor ABI version is incremented.
      * The NUM_* parameters must be reduced appropriately to keep the
Index: xorg-server-1.8.0/include/opaque.h
===================================================================
--- xorg-server-1.8.0.orig/include/opaque.h
+++ xorg-server-1.8.0/include/opaque.h
@@ -71,6 +71,7 @@ extern _X_EXPORT Bool defeatAccessContro
 extern _X_EXPORT long maxBigRequestSize;
 extern _X_EXPORT Bool party_like_its_1989;
 extern _X_EXPORT Bool whiteRoot;
+extern _X_EXPORT Bool bgNoneRoot;
 
 extern _X_EXPORT Bool CoreDump;
 
Index: xorg-server-1.8.0/os/utils.c
===================================================================
--- xorg-server-1.8.0.orig/os/utils.c
+++ xorg-server-1.8.0/os/utils.c
@@ -511,6 +511,7 @@ void UseMsg(void)
 #endif
     ErrorF("-nolisten string       don't listen on protocol\n");
     ErrorF("-noreset               don't reset after last client exists\n");
+    ErrorF("-nr                    create root window with no background\n");
     ErrorF("-reset                 reset after last client exists\n");
     ErrorF("-p #                   screen-saver pattern duration (minutes)\n");
     ErrorF("-pn                    accept failure to listen on all ports\n");
@@ -852,6 +853,8 @@ ProcessCommandLine(int argc, char *argv[
 	    defaultBackingStore = WhenMapped;
         else if ( strcmp( argv[i], "-wr") == 0)
             whiteRoot = TRUE;
+        else if ( strcmp( argv[i], "-nr") == 0)
+            bgNoneRoot = TRUE;
         else if ( strcmp( argv[i], "-maxbigreqsize") == 0) {
              if(++i < argc) {
                  long reqSizeArg = atol(argv[i]);
--- xorg-server-1.9.0/dix/globals.c.orig	2010-06-06 19:53:51.000000000 +0200
+++ xorg-server-1.9.0/dix/globals.c	2010-08-23 15:27:52.000000000 +0200
@@ -122,6 +122,7 @@ FontPtr defaultFont;   /* not declared i
 CursorPtr rootCursor;
 Bool party_like_its_1989 = FALSE;
 Bool whiteRoot = FALSE;
+Bool bgNoneRoot = FALSE;
 
 TimeStamp currentTime;
 TimeStamp lastDeviceEventTime;
--- xorg-server-1.9.0/hw/xfree86/common/xf86Init.c.orig	2010-06-10 16:07:55.000000000 +0200
+++ xorg-server-1.9.0/hw/xfree86/common/xf86Init.c	2010-08-23 15:32:56.000000000 +0200
@@ -76,6 +76,7 @@
 #include "xf86Xinput.h"
 #include "xf86InPriv.h"
 #include "picturestr.h"
+#include "xace.h"
 
 #include "xf86Bus.h"
 #include "xf86VGAarbiter.h"
@@ -242,6 +243,7 @@ xf86CreateRootWindow(WindowPtr pWin)
   int ret = TRUE;
   int err = Success;
   ScreenPtr pScreen = pWin->drawable.pScreen;
+  ScrnInfoPtr pScrn = xf86Screens[pScreen->myNum];
   RootWinPropPtr pProp;
   CreateWindowProcPtr CreateWindow = (CreateWindowProcPtr)
       dixLookupPrivate(&pScreen->devPrivates, xf86CreateRootWindowKey);
@@ -293,6 +295,17 @@ xf86CreateRootWindow(WindowPtr pWin)
     }
   }
 
+  if (bgNoneRoot) {
+	if (pScrn->canDoBGNoneRoot) {
+	    pWin->backgroundState = XaceBackgroundNoneState(pWin);
+	    pWin->background.pixel = pScreen->whitePixel;
+	    pScreen->ChangeWindowAttributes(pWin, CWBackPixmap | CWBorderPixel | CWCursor | CWBackingStore);
+	} else {
+	    pWin->background.pixel = pScreen->blackPixel;
+	    pScreen->ChangeWindowAttributes(pWin, CWBackPixel | CWBorderPixel | CWCursor | CWBackingStore);
+	}
+  }
+
   DebugF("xf86CreateRootWindow() returns %d\n", ret);
   return ret;
 }