Importing xserver from X.Org 7.2RC2

1 files changed, 464 insertions, 0 deletions

diff --git a/xserver/composite/compinit.c b/xserver/composite/compinit.c
new file mode 100644
index 000000000..dce07d0ab
--- /dev/null
+++ b/xserver/composite/compinit.c
@@ -0,0 +1,464 @@
+/*
+ * $Id: compinit.c,v 1.1 2006/11/26 18:16:14 matthieu Exp $
+ *
+ * Copyright © 2006 Sun Microsystems
+ *
+ * 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 Sun Microsystems not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Sun Microsystems makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * SUN MICROSYSTEMS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL SUN MICROSYSTEMS 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.
+ *
+ * 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"
+
+int	CompScreenPrivateIndex;
+int	CompWindowPrivateIndex;
+int	CompSubwindowsPrivateIndex;
+int	CompGeneration;
+
+
+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->ReparentWindow = cs->ReparentWindow;
+    pScreen->MoveWindow = cs->MoveWindow;
+    pScreen->ResizeWindow = cs->ResizeWindow;
+    pScreen->ChangeBorderWidth = cs->ChangeBorderWidth;
+    
+    pScreen->ClipNotify = cs->ClipNotify;
+    pScreen->PaintWindowBackground = cs->PaintWindowBackground;
+    pScreen->UnrealizeWindow = cs->UnrealizeWindow;
+    pScreen->RealizeWindow = cs->RealizeWindow;
+    pScreen->DestroyWindow = cs->DestroyWindow;
+    pScreen->CreateWindow = cs->CreateWindow;
+    pScreen->CopyWindow = cs->CopyWindow;
+    pScreen->PositionWindow = cs->PositionWindow;
+
+    deleteCompOverlayClientsForScreen(pScreen);
+
+    /* 
+    ** Note: no need to call DeleteWindow; the server has
+    ** already destroyed it.
+    */
+    cs->pOverlayWin = NULL;
+
+    xfree (cs);
+    pScreen->devPrivates[CompScreenPrivateIndex].ptr = 0;
+    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;
+}
+
+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;
+}
+
+_X_EXPORT
+Bool CompositeRegisterAlternateVisuals (ScreenPtr pScreen, VisualID *vids,
+					int nVisuals)
+{
+    CompScreenPtr cs = GetCompScreen (pScreen);
+    return compRegisterAlternateVisuals(cs, vids, nVisuals);
+}
+
+#if COMP_INCLUDE_RGB24_VISUAL
+#define NUM_COMP_ALTERNATE_VISUALS 2
+#else
+#define NUM_COMP_ALTERNATE_VISUALS 1
+#endif
+
+typedef struct _alternateVisual {
+    int		depth;
+    CARD32	format;
+} CompAlternateVisual;
+
+static CompAlternateVisual  altVisuals[NUM_COMP_ALTERNATE_VISUALS] = {
+#if COMP_INCLUDE_RGB24_VISUAL
+    {	24,	PICT_r8g8b8 },
+#endif
+    {	32,	PICT_a8r8g8b8 },
+};
+
+static Bool
+compAddAlternateVisuals (ScreenPtr pScreen, CompScreenPtr cs)
+{
+    VisualPtr	    visuals;
+    DepthPtr	    depths[NUM_COMP_ALTERNATE_VISUALS];
+    PictFormatPtr   pPictFormats[NUM_COMP_ALTERNATE_VISUALS];
+    int		    i;
+    int		    numVisuals;
+    VisualID	    *vids[NUM_COMP_ALTERNATE_VISUALS];
+    XID		    *installedCmaps;
+    ColormapPtr	    installedCmap;
+    int		    numInstalledCmaps;
+    int		    numAlternate = 0;
+    int		    alt;
+    
+    for (alt = 0; alt < NUM_COMP_ALTERNATE_VISUALS; alt++)
+    {
+	DepthPtr	depth;
+	PictFormatPtr   pPictFormat;
+	
+	depth = compFindVisuallessDepth (pScreen, altVisuals[alt].depth);
+	if (!depth)
+	    continue;
+	/*
+	 * Find the right picture format
+	 */
+	pPictFormat = PictureMatchFormat (pScreen, altVisuals[alt].depth,
+					  altVisuals[alt].format);
+	if (!pPictFormat)
+	    continue;
+
+	/*
+	 * Allocate vid list for this depth
+	 */
+	vids[numAlternate] = xalloc (sizeof (VisualID));
+	if (!vids[numAlternate])
+	    continue;
+	depths[numAlternate] = depth;
+	pPictFormats[numAlternate] = pPictFormat;
+	numAlternate++;
+    }
+    
+    if (!numAlternate)
+	return TRUE;
+
+    /*
+     * Find the installed colormaps
+     */
+    installedCmaps = xalloc (pScreen->maxInstalledCmaps * sizeof (XID));
+    if (!installedCmaps)
+    {
+	for (alt = 0; alt < numAlternate; alt++)
+	    xfree (vids[alt]);
+	return FALSE;
+    }
+    numInstalledCmaps = (*pScreen->ListInstalledColormaps) (pScreen, 
+							    installedCmaps);
+    
+    /*
+     * realloc the visual array to fit the new one in place
+     */
+    numVisuals = pScreen->numVisuals;
+    visuals = xrealloc (pScreen->visuals,
+			(numVisuals + numAlternate) * sizeof (VisualRec));
+    if (!visuals)
+    {
+	for (alt = 0; alt < numAlternate; alt++)
+	    xfree (vids[alt]);
+	xfree (installedCmaps);
+	return FALSE;
+    }
+    
+    /*
+     * Fix up any existing installed colormaps -- we'll assume that
+     * the only ones created so far have been installed.  If this
+     * isn't true, we'll have to walk the resource database looking
+     * for all colormaps.
+     */
+    for (i = 0; i < numInstalledCmaps; i++)
+    {
+	int j;
+	
+	installedCmap = LookupIDByType (installedCmaps[i], RT_COLORMAP);
+	if (!installedCmap)
+	    continue;
+	j = installedCmap->pVisual - pScreen->visuals;
+	installedCmap->pVisual = &visuals[j];
+    }
+
+    xfree (installedCmaps);
+
+    pScreen->visuals = visuals;
+    pScreen->numVisuals = numVisuals + numAlternate;
+
+    for (alt = 0; alt < numAlternate; alt++)
+    {
+	DepthPtr	depth = depths[alt];
+	PictFormatPtr	pPictFormat = pPictFormats[alt];
+	VisualPtr	visual = &visuals[numVisuals + alt];
+	unsigned long	alphaMask;
+
+	/*
+	 * Initialize the visual
+	 */
+	visual->class = TrueColor;
+	visual->bitsPerRGBValue = 8;
+
+	visual->vid = FakeClientID (0);
+	visual->redMask   = (((unsigned long) pPictFormat->direct.redMask) << 
+			     pPictFormat->direct.red);
+	visual->greenMask = (((unsigned long) pPictFormat->direct.greenMask) << 
+			     pPictFormat->direct.green);
+	visual->blueMask  = (((unsigned long) pPictFormat->direct.blueMask) << 
+			     pPictFormat->direct.blue);
+	alphaMask =  (((unsigned long) pPictFormat->direct.alphaMask) << 
+		      pPictFormat->direct.alpha);
+	visual->offsetRed   = pPictFormat->direct.red;
+	visual->offsetGreen = pPictFormat->direct.green;
+	visual->offsetBlue  = pPictFormat->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);
+	
+	/*
+	 * Fix up the depth
+	 */
+	vids[alt][0] = visual->vid;
+	depth->numVids = 1;
+	depth->vids = vids[alt];
+    }
+    return TRUE;
+}
+
+Bool
+compScreenInit (ScreenPtr pScreen)
+{
+    CompScreenPtr   cs;
+
+    if (CompGeneration != serverGeneration)
+    {
+	CompScreenPrivateIndex = AllocateScreenPrivateIndex ();
+	if (CompScreenPrivateIndex == -1)
+	    return FALSE;
+	CompWindowPrivateIndex = AllocateWindowPrivateIndex ();
+	if (CompWindowPrivateIndex == -1)
+	    return FALSE;
+	CompSubwindowsPrivateIndex = AllocateWindowPrivateIndex ();
+	if (CompSubwindowsPrivateIndex == -1)
+	    return FALSE;
+	CompGeneration = serverGeneration;
+    }
+    if (!AllocateWindowPrivate (pScreen, CompWindowPrivateIndex, 0))
+	return FALSE;
+
+    if (!AllocateWindowPrivate (pScreen, CompSubwindowsPrivateIndex, 0))
+	return FALSE;
+
+    if (GetCompScreen (pScreen))
+	return TRUE;
+    cs = (CompScreenPtr) xalloc (sizeof (CompScreenRec));
+    if (!cs)
+	return FALSE;
+
+    cs->damaged = FALSE;
+    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->PaintWindowBackground = pScreen->PaintWindowBackground;
+    pScreen->PaintWindowBackground = compPaintWindowBackground;
+
+    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->BlockHandler = pScreen->BlockHandler;
+    pScreen->BlockHandler = compBlockHandler;
+
+    cs->CloseScreen = pScreen->CloseScreen;
+    pScreen->CloseScreen = compCloseScreen;
+
+    pScreen->devPrivates[CompScreenPrivateIndex].ptr = (pointer) cs;
+
+    RegisterRealChildHeadProc(CompositeRealChildHead);
+
+    return TRUE;
+}