xserver git update 9/5/2010

1 files changed, 1821 insertions, 1821 deletions

diff --git a/xorg-server/render/picture.c b/xorg-server/render/picture.c
index 18bfea29b..6005683c0 100644
--- a/xorg-server/render/picture.c
+++ b/xorg-server/render/picture.c
@@ -1,1821 +1,1821 @@
-/*
- *
- * Copyright © 2000 SuSE, Inc.
- *
- * 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 SuSE not be used in advertising or
- * publicity pertaining to distribution of the software without specific,
- * written prior permission.  SuSE makes no representations about the
- * suitability of this software for any purpose.  It is provided "as is"
- * without express or implied warranty.
- *
- * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE
- * 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.
- *
- * Author:  Keith Packard, SuSE, Inc.
- */
-
-#ifdef HAVE_DIX_CONFIG_H
-#include <dix-config.h>
-#endif
-
-#include "misc.h"
-#include "scrnintstr.h"
-#include "os.h"
-#include "regionstr.h"
-#include "validate.h"
-#include "windowstr.h"
-#include "input.h"
-#include "resource.h"
-#include "colormapst.h"
-#include "cursorstr.h"
-#include "dixstruct.h"
-#include "gcstruct.h"
-#include "servermd.h"
-#include "picturestr.h"
-#include "xace.h"
-
-static int PictureScreenPrivateKeyIndex;
-DevPrivateKey PictureScreenPrivateKey = &PictureScreenPrivateKeyIndex;
-static int PictureWindowPrivateKeyIndex;
-DevPrivateKey	PictureWindowPrivateKey = &PictureWindowPrivateKeyIndex;
-static int	PictureGeneration;
-RESTYPE		PictureType;
-RESTYPE		PictFormatType;
-RESTYPE		GlyphSetType;
-int		PictureCmapPolicy = PictureCmapPolicyDefault;
-
-Bool
-PictureDestroyWindow (WindowPtr pWindow)
-{
-    ScreenPtr		pScreen = pWindow->drawable.pScreen;
-    PicturePtr		pPicture;
-    PictureScreenPtr    ps = GetPictureScreen(pScreen);
-    Bool		ret;
-
-    while ((pPicture = GetPictureWindow(pWindow)))
-    {
-	SetPictureWindow(pWindow, pPicture->pNext);
-	if (pPicture->id)
-	    FreeResource (pPicture->id, PictureType);
-	FreePicture ((pointer) pPicture, pPicture->id);
-    }
-    pScreen->DestroyWindow = ps->DestroyWindow;
-    ret = (*pScreen->DestroyWindow) (pWindow);
-    ps->DestroyWindow = pScreen->DestroyWindow;
-    pScreen->DestroyWindow = PictureDestroyWindow;
-    return ret;
-}
-
-Bool
-PictureCloseScreen (int index, ScreenPtr pScreen)
-{
-    PictureScreenPtr    ps = GetPictureScreen(pScreen);
-    Bool                ret;
-    int			n;
-
-    pScreen->CloseScreen = ps->CloseScreen;
-    ret = (*pScreen->CloseScreen) (index, pScreen);
-    PictureResetFilters (pScreen);
-    for (n = 0; n < ps->nformats; n++)
-	if (ps->formats[n].type == PictTypeIndexed)
-	    (*ps->CloseIndexed) (pScreen, &ps->formats[n]);
-    GlyphUninit (pScreen);
-    SetPictureScreen(pScreen, 0);
-    xfree (ps->formats);
-    xfree (ps);
-    return ret;
-}
-
-void
-PictureStoreColors (ColormapPtr pColormap, int ndef, xColorItem *pdef)
-{
-    ScreenPtr		pScreen = pColormap->pScreen;
-    PictureScreenPtr    ps = GetPictureScreen(pScreen);
-
-    pScreen->StoreColors = ps->StoreColors;
-    (*pScreen->StoreColors) (pColormap, ndef, pdef);
-    ps->StoreColors = pScreen->StoreColors;
-    pScreen->StoreColors = PictureStoreColors;
-
-    if (pColormap->class == PseudoColor || pColormap->class == GrayScale)
-    {
-	PictFormatPtr	format = ps->formats;
-	int		nformats = ps->nformats;
-
-	while (nformats--)
-	{
-	    if (format->type == PictTypeIndexed &&
-		format->index.pColormap == pColormap)
-	    {
-		(*ps->UpdateIndexed) (pScreen, format, ndef, pdef);
-		break;
-	    }
-	    format++;
-	}
-    }
-}
-
-static int
-visualDepth (ScreenPtr pScreen, VisualPtr pVisual)
-{
-    int		d, v;
-    DepthPtr	pDepth;
-
-    for (d = 0; d < pScreen->numDepths; d++)
-    {
-	pDepth = &pScreen->allowedDepths[d];
-	for (v = 0; v < pDepth->numVids; v++)
-	    if (pDepth->vids[v] == pVisual->vid)
-		return pDepth->depth;
-    }
-    return 0;
-}
-
-typedef struct _formatInit {
-    CARD32  format;
-    CARD8   depth;
-} FormatInitRec, *FormatInitPtr;
-
-static int
-addFormat (FormatInitRec    formats[256],
-	   int		    nformat,
-	   CARD32	    format,
-	   CARD8	    depth)
-{
-    int	n;
-
-    for (n = 0; n < nformat; n++)
-	if (formats[n].format == format && formats[n].depth == depth)
-	    return nformat;
-    formats[nformat].format = format;
-    formats[nformat].depth = depth;
-    return ++nformat;
-}
-
-#define Mask(n)	((n) == 32 ? 0xffffffff : ((1 << (n))-1))
-
-PictFormatPtr
-PictureCreateDefaultFormats (ScreenPtr pScreen, int *nformatp)
-{
-    int		    nformats, f;
-    PictFormatPtr   pFormats;
-    FormatInitRec   formats[1024];
-    CARD32	    format;
-    CARD8	    depth;
-    VisualPtr	    pVisual;
-    int		    v;
-    int		    bpp;
-    int		    type;
-    int		    r, g, b;
-    int		    d;
-    DepthPtr	    pDepth;
-
-    nformats = 0;
-    /* formats required by protocol */
-    formats[nformats].format = PICT_a1;
-    formats[nformats].depth = 1;
-    nformats++;
-    formats[nformats].format = PICT_FORMAT(BitsPerPixel(8),
-					   PICT_TYPE_A,
-					   8, 0, 0, 0);
-    formats[nformats].depth = 8;
-    nformats++;
-    formats[nformats].format = PICT_FORMAT(BitsPerPixel(4),
-					   PICT_TYPE_A,
-					   4, 0, 0, 0);
-    formats[nformats].depth = 4;
-    nformats++;
-    formats[nformats].format = PICT_a8r8g8b8;
-    formats[nformats].depth = 32;
-    nformats++;
-    formats[nformats].format = PICT_x8r8g8b8;
-    formats[nformats].depth = 32;
-    nformats++;
-    formats[nformats].format = PICT_b8g8r8a8;
-    formats[nformats].depth = 32;
-    nformats++;
-    formats[nformats].format = PICT_b8g8r8x8;
-    formats[nformats].depth = 32;
-    nformats++;
-
-    /* now look through the depths and visuals adding other formats */
-    for (v = 0; v < pScreen->numVisuals; v++)
-    {
-	pVisual = &pScreen->visuals[v];
-	depth = visualDepth (pScreen, pVisual);
-	if (!depth)
-	    continue;
-    	bpp = BitsPerPixel (depth);
-	switch (pVisual->class) {
-	case DirectColor:
-	case TrueColor:
-	    r = Ones (pVisual->redMask);
-	    g = Ones (pVisual->greenMask);
-	    b = Ones (pVisual->blueMask);
-	    type = PICT_TYPE_OTHER;
-	    /*
-	     * Current rendering code supports only three direct formats,
-	     * fields must be packed together at the bottom of the pixel
-	     */
-	    if (pVisual->offsetBlue == 0 &&
-		pVisual->offsetGreen == b &&
-		pVisual->offsetRed == b + g)
-	    {
-		type = PICT_TYPE_ARGB;
-	    }
-	    else if (pVisual->offsetRed == 0 &&
-		     pVisual->offsetGreen == r && 
-		     pVisual->offsetBlue == r + g)
-	    {
-		type = PICT_TYPE_ABGR;
-	    }
-	    else if (pVisual->offsetRed == pVisual->offsetGreen - r &&
-		     pVisual->offsetGreen == pVisual->offsetBlue - g && 
-		     pVisual->offsetBlue == bpp - b)
-	    {
-		type = PICT_TYPE_BGRA;
-	    }
-	    if (type != PICT_TYPE_OTHER)
-	    {
-		format = PICT_FORMAT(bpp, type, 0, r, g, b);
-		nformats = addFormat (formats, nformats, format, depth);
-	    }
-	    break;
-	case StaticColor:
-	case PseudoColor:
-	    format = PICT_VISFORMAT (bpp, PICT_TYPE_COLOR, v);
-	    nformats = addFormat (formats, nformats, format, depth);
-	    break;
-	case StaticGray:
-	case GrayScale:
-	    format = PICT_VISFORMAT (bpp, PICT_TYPE_GRAY, v);
-	    nformats = addFormat (formats, nformats, format, depth);
-	    break;
-	}
-    }
-    /*
-     * Walk supported depths and add useful Direct formats
-     */
-    for (d = 0; d < pScreen->numDepths; d++)
-    {
-	pDepth = &pScreen->allowedDepths[d];
-	bpp = BitsPerPixel (pDepth->depth);
-	format = 0;
-	switch (bpp) {
-	case 16:
-	    /* depth 12 formats */
-	    if (pDepth->depth >= 12)
-	    {
-		nformats = addFormat (formats, nformats,
-				      PICT_x4r4g4b4, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_x4b4g4r4, pDepth->depth);
-	    }
-	    /* depth 15 formats */
-	    if (pDepth->depth >= 15)
-	    {
-		nformats = addFormat (formats, nformats,
-				      PICT_x1r5g5b5, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_x1b5g5r5, pDepth->depth);
-	    }
-	    /* depth 16 formats */
-	    if (pDepth->depth >= 16) 
-	    {
-		nformats = addFormat (formats, nformats,
-				      PICT_a1r5g5b5, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_a1b5g5r5, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_r5g6b5, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_b5g6r5, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_a4r4g4b4, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_a4b4g4r4, pDepth->depth);
-	    }
-	    break;
-	case 24:
-	    if (pDepth->depth >= 24)
-	    {
-		nformats = addFormat (formats, nformats,
-				      PICT_r8g8b8, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_b8g8r8, pDepth->depth);
-	    }
-	    break;
-	case 32:
-	    if (pDepth->depth >= 24)
-	    {
-		nformats = addFormat (formats, nformats,
-				      PICT_x8r8g8b8, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_x8b8g8r8, pDepth->depth);
-	    }
-	    if (pDepth->depth >= 30)
-	    {
-		nformats = addFormat (formats, nformats,
-				      PICT_a2r10g10b10, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_x2r10g10b10, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_a2b10g10r10, pDepth->depth);
-		nformats = addFormat (formats, nformats,
-				      PICT_x2b10g10r10, pDepth->depth);
-	    }
-	    break;
-	}
-    }
-    
-
-    pFormats = xcalloc (nformats, sizeof (PictFormatRec));
-    if (!pFormats)
-	return 0;
-    for (f = 0; f < nformats; f++)
-    {
-        pFormats[f].id = FakeClientID (0);
-	pFormats[f].depth = formats[f].depth;
-	format = formats[f].format;
-	pFormats[f].format = format;
-	switch (PICT_FORMAT_TYPE(format)) {
-	case PICT_TYPE_ARGB:
-	    pFormats[f].type = PictTypeDirect;
-	    
-	    pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));
-	    if (pFormats[f].direct.alphaMask)
-		pFormats[f].direct.alpha = (PICT_FORMAT_R(format) +
-					    PICT_FORMAT_G(format) +
-					    PICT_FORMAT_B(format));
-	    
-	    pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));
-	    pFormats[f].direct.red = (PICT_FORMAT_G(format) + 
-				      PICT_FORMAT_B(format));
-	    
-	    pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));
-	    pFormats[f].direct.green = PICT_FORMAT_B(format);
-	    
-	    pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));
-	    pFormats[f].direct.blue = 0;
-	    break;
-
-	case PICT_TYPE_ABGR:
-	    pFormats[f].type = PictTypeDirect;
-	    
-	    pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));
-	    if (pFormats[f].direct.alphaMask)
-		pFormats[f].direct.alpha = (PICT_FORMAT_B(format) +
-					    PICT_FORMAT_G(format) +
-					    PICT_FORMAT_R(format));
-	    
-	    pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));
-	    pFormats[f].direct.blue = (PICT_FORMAT_G(format) + 
-				       PICT_FORMAT_R(format));
-	    
-	    pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));
-	    pFormats[f].direct.green = PICT_FORMAT_R(format);
-	    
-	    pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));
-	    pFormats[f].direct.red = 0;
-	    break;
-
-	case PICT_TYPE_BGRA:
-	    pFormats[f].type = PictTypeDirect;
-	    
-	    pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));
-	    pFormats[f].direct.blue = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format));
-
-	    pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));
-	    pFormats[f].direct.green = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format) -
-					PICT_FORMAT_G(format));
-
-	    pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));
-	    pFormats[f].direct.red = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format) -
-				      PICT_FORMAT_G(format) - PICT_FORMAT_R(format));
-
-	    pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));
-	    pFormats[f].direct.alpha = 0;
-	    break;
-
-	case PICT_TYPE_A:
-	    pFormats[f].type = PictTypeDirect;
-
-	    pFormats[f].direct.alpha = 0;
-	    pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));
-
-	    /* remaining fields already set to zero */
-	    break;
-	    
-	case PICT_TYPE_COLOR:
-	case PICT_TYPE_GRAY:
-	    pFormats[f].type = PictTypeIndexed;
-	    pFormats[f].index.vid = pScreen->visuals[PICT_FORMAT_VIS(format)].vid;
-	    break;
-	}
-    }
-    *nformatp = nformats;
-    return pFormats;
-}
-
-static VisualPtr
-PictureFindVisual (ScreenPtr pScreen, VisualID visual)
-{
-    int         i;
-    VisualPtr   pVisual;
-    for (i = 0, pVisual = pScreen->visuals;
-         i < pScreen->numVisuals;
-         i++, pVisual++)
-    {
-        if (pVisual->vid == visual)
-            return pVisual;
-    }
-    return 0;
-}
-
-Bool
-PictureInitIndexedFormat(ScreenPtr pScreen, PictFormatPtr format)
-{
-    PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
-
-    if (format->type != PictTypeIndexed || format->index.pColormap)
-	return TRUE;
-
-    if (format->index.vid == pScreen->rootVisual) {
-	dixLookupResourceByType((pointer *)&format->index.pColormap,
-				pScreen->defColormap, RT_COLORMAP,
-				serverClient, DixGetAttrAccess);
-    } else {
-	VisualPtr pVisual = PictureFindVisual(pScreen, format->index.vid);
-	if (CreateColormap(FakeClientID (0), pScreen, pVisual,
-		    &format->index.pColormap, AllocNone, 0)
-		!= Success)
-	    return FALSE;
-    }
-    if (!ps->InitIndexed(pScreen, format))
-	return FALSE;
-    return TRUE;
-}
-
-static Bool
-PictureInitIndexedFormats (ScreenPtr pScreen)
-{
-    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);
-    PictFormatPtr	format;
-    int			nformat;
-
-    if (!ps)
-	return FALSE;
-    format = ps->formats;
-    nformat = ps->nformats;
-    while (nformat--)
-	if (!PictureInitIndexedFormat(pScreen, format++))
-	    return FALSE;
-    return TRUE;
-}
-
-Bool
-PictureFinishInit (void)
-{
-    int	    s;
-
-    for (s = 0; s < screenInfo.numScreens; s++)
-    {
-	if (!PictureInitIndexedFormats (screenInfo.screens[s]))
-	    return FALSE;
-	(void) AnimCurInit (screenInfo.screens[s]);
-    }
-
-    return TRUE;
-}
-
-Bool
-PictureSetSubpixelOrder (ScreenPtr pScreen, int subpixel)
-{
-    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);
-
-    if (!ps)
-	return FALSE;
-    ps->subpixel = subpixel;
-    return TRUE;
-    
-}
-
-int
-PictureGetSubpixelOrder (ScreenPtr pScreen)
-{
-    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);
-
-    if (!ps)
-	return SubPixelUnknown;
-    return ps->subpixel;
-}
-    
-PictFormatPtr
-PictureMatchVisual (ScreenPtr pScreen, int depth, VisualPtr pVisual)
-{
-    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);
-    PictFormatPtr	format;
-    int			nformat;
-    int			type;
-
-    if (!ps)
-	return 0;
-    format = ps->formats;
-    nformat = ps->nformats;
-    switch (pVisual->class) {
-    case StaticGray:
-    case GrayScale:
-    case StaticColor:
-    case PseudoColor:
-	type = PictTypeIndexed;
-	break;
-    case TrueColor:
-    case DirectColor:
-	type = PictTypeDirect;
-	break;
-    default:
-	return 0;
-    }
-    while (nformat--)
-    {
-	if (format->depth == depth && format->type == type)
-	{
-	    if (type == PictTypeIndexed)
-	    {
-		if (format->index.vid == pVisual->vid)
-		    return format;
-	    }
-	    else
-	    {
-		if (format->direct.redMask << format->direct.red == 
-		    pVisual->redMask &&
-		    format->direct.greenMask << format->direct.green == 
-		    pVisual->greenMask &&
-		    format->direct.blueMask << format->direct.blue == 
-		    pVisual->blueMask)
-		{
-		    return format;
-		}
-	    }
-	}
-	format++;
-    }
-    return 0;
-}
-
-PictFormatPtr
-PictureMatchFormat (ScreenPtr pScreen, int depth, CARD32 f)
-{
-    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);
-    PictFormatPtr	format;
-    int			nformat;
-
-    if (!ps)
-	return 0;
-    format = ps->formats;
-    nformat = ps->nformats;
-    while (nformat--)
-    {
-	if (format->depth == depth && format->format == (f & 0xffffff))
-	    return format;
-	format++;
-    }
-    return 0;
-}
-
-int
-PictureParseCmapPolicy (const char *name)
-{
-    if ( strcmp (name, "default" ) == 0)
-	return PictureCmapPolicyDefault;
-    else if ( strcmp (name, "mono" ) == 0)
-	return PictureCmapPolicyMono;
-    else if ( strcmp (name, "gray" ) == 0)
-	return PictureCmapPolicyGray;
-    else if ( strcmp (name, "color" ) == 0)
-	return PictureCmapPolicyColor;
-    else if ( strcmp (name, "all" ) == 0)
-	return PictureCmapPolicyAll;
-    else
-	return PictureCmapPolicyInvalid;
-}
-
-Bool
-PictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
-{
-    PictureScreenPtr	ps;
-    int			n;
-    CARD32		type, a, r, g, b;
-    
-    if (PictureGeneration != serverGeneration)
-    {
-	PictureType = CreateNewResourceType (FreePicture, "PICTURE");
-	if (!PictureType)
-	    return FALSE;
-	PictFormatType = CreateNewResourceType (FreePictFormat, "PICTFORMAT");
-	if (!PictFormatType)
-	    return FALSE;
-	GlyphSetType = CreateNewResourceType (FreeGlyphSet, "GLYPHSET");
-	if (!GlyphSetType)
-	    return FALSE;
-	PictureGeneration = serverGeneration;
-    }
-    if (!formats)
-    {
-	formats = PictureCreateDefaultFormats (pScreen, &nformats);
-	if (!formats)
-	    return FALSE;
-    }
-    for (n = 0; n < nformats; n++)
-    {
-	if (!AddResource (formats[n].id, PictFormatType, (pointer) (formats+n)))
-	{
-	    xfree (formats);
-	    return FALSE;
-	}
-	if (formats[n].type == PictTypeIndexed)
-	{
-            VisualPtr   pVisual = PictureFindVisual (pScreen, formats[n].index.vid);
-	    if ((pVisual->class | DynamicClass) == PseudoColor)
-		type = PICT_TYPE_COLOR;
-	    else
-		type = PICT_TYPE_GRAY;
-	    a = r = g = b = 0;
-	}
-	else
-	{
-	    if ((formats[n].direct.redMask|
-		 formats[n].direct.blueMask|
-		 formats[n].direct.greenMask) == 0)
-		type = PICT_TYPE_A;
-	    else if (formats[n].direct.red > formats[n].direct.blue)
-		type = PICT_TYPE_ARGB;
-	    else if (formats[n].direct.red == 0)
-		type = PICT_TYPE_ABGR;
-	    else
-		type = PICT_TYPE_BGRA;
-	    a = Ones (formats[n].direct.alphaMask);
-	    r = Ones (formats[n].direct.redMask);
-	    g = Ones (formats[n].direct.greenMask);
-	    b = Ones (formats[n].direct.blueMask);
-	}
-	formats[n].format = PICT_FORMAT(0,type,a,r,g,b);
-    }
-    ps = (PictureScreenPtr) xalloc (sizeof (PictureScreenRec));
-    if (!ps)
-    {
-	xfree (formats);
-	return FALSE;
-    }
-    SetPictureScreen(pScreen, ps);
-
-    ps->formats = formats;
-    ps->fallback = formats;
-    ps->nformats = nformats;
-    
-    ps->filters = 0;
-    ps->nfilters = 0;
-    ps->filterAliases = 0;
-    ps->nfilterAliases = 0;
-
-    ps->subpixel = SubPixelUnknown;
-
-    ps->CloseScreen = pScreen->CloseScreen;
-    ps->DestroyWindow = pScreen->DestroyWindow;
-    ps->StoreColors = pScreen->StoreColors;
-    pScreen->DestroyWindow = PictureDestroyWindow;
-    pScreen->CloseScreen = PictureCloseScreen;
-    pScreen->StoreColors = PictureStoreColors;
-
-    if (!PictureSetDefaultFilters (pScreen))
-    {
-	PictureResetFilters (pScreen);
-	SetPictureScreen(pScreen, 0);
-	xfree (formats);
-	xfree (ps);
-	return FALSE;
-    }
-
-    return TRUE;
-}
-
-void
-SetPictureToDefaults (PicturePtr    pPicture)
-{
-    pPicture->refcnt = 1;
-    pPicture->repeat = 0;
-    pPicture->graphicsExposures = FALSE;
-    pPicture->subWindowMode = ClipByChildren;
-    pPicture->polyEdge = PolyEdgeSharp;
-    pPicture->polyMode = PolyModePrecise;
-    pPicture->freeCompClip = FALSE;
-    pPicture->clientClipType = CT_NONE;
-    pPicture->componentAlpha = FALSE;
-    pPicture->repeatType = RepeatNone;
-
-    pPicture->alphaMap = 0;
-    pPicture->alphaOrigin.x = 0;
-    pPicture->alphaOrigin.y = 0;
-
-    pPicture->clipOrigin.x = 0;
-    pPicture->clipOrigin.y = 0;
-    pPicture->clientClip = 0;
-
-    pPicture->transform = 0;
-
-    pPicture->dither = None;
-    pPicture->filter = PictureGetFilterId (FilterNearest, -1, TRUE);
-    pPicture->filter_params = 0;
-    pPicture->filter_nparams = 0;
-
-    pPicture->serialNumber = GC_CHANGE_SERIAL_BIT;
-    pPicture->stateChanges = (1 << (CPLastBit+1)) - 1;
-    pPicture->pSourcePict = 0;
-}
-
-PicturePtr
-CreatePicture (Picture		pid,
-	       DrawablePtr	pDrawable,
-	       PictFormatPtr	pFormat,
-	       Mask		vmask,
-	       XID		*vlist,
-	       ClientPtr	client,
-	       int		*error)
-{
-    PicturePtr		pPicture;
-    PictureScreenPtr	ps = GetPictureScreen(pDrawable->pScreen);
-
-    pPicture = (PicturePtr)xalloc(sizeof(PictureRec));
-    if (!pPicture)
-    {
-	*error = BadAlloc;
-	return 0;
-    }
-
-    pPicture->id = pid;
-    pPicture->pDrawable = pDrawable;
-    pPicture->pFormat = pFormat;
-    pPicture->format = pFormat->format | (pDrawable->bitsPerPixel << 24);
-    pPicture->devPrivates = NULL;
-
-    /* security creation/labeling check */
-    *error = XaceHook(XACE_RESOURCE_ACCESS, client, pid, PictureType, pPicture,
-		      RT_PIXMAP, pDrawable, DixCreateAccess|DixSetAttrAccess);
-    if (*error != Success)
-	goto out;
-
-    if (pDrawable->type == DRAWABLE_PIXMAP)
-    {
-	++((PixmapPtr)pDrawable)->refcnt;
-	pPicture->pNext = 0;
-    }
-    else
-    {
-	pPicture->pNext = GetPictureWindow(((WindowPtr) pDrawable));
-	SetPictureWindow(((WindowPtr) pDrawable), pPicture);
-    }
-
-    SetPictureToDefaults (pPicture);
-    
-    if (vmask)
-	*error = ChangePicture (pPicture, vmask, vlist, 0, client);
-    else
-	*error = Success;
-    if (*error == Success)
-	*error = (*ps->CreatePicture) (pPicture);
-out:
-    if (*error != Success)
-    {
-	FreePicture (pPicture, (XID) 0);
-	pPicture = 0;
-    }
-    return pPicture;
-}
-
-static CARD32 xRenderColorToCard32(xRenderColor c)
-{
-    return
-        (c.alpha >> 8 << 24) |
-        (c.red >> 8 << 16) |
-        (c.green & 0xff00) |
-        (c.blue >> 8);
-}
-
-static unsigned int premultiply(unsigned int x)
-{
-    unsigned int a = x >> 24;
-    unsigned int t = (x & 0xff00ff) * a + 0x800080;
-    t = (t + ((t >> 8) & 0xff00ff)) >> 8;
-    t &= 0xff00ff;
-
-    x = ((x >> 8) & 0xff) * a + 0x80;
-    x = (x + ((x >> 8) & 0xff));
-    x &= 0xff00;
-    x |= t | (a << 24);
-    return x;
-}
-
-static unsigned int INTERPOLATE_PIXEL_256(unsigned int x, unsigned int a,
-                                          unsigned int y, unsigned int b)
-{
-    CARD32 t = (x & 0xff00ff) * a + (y & 0xff00ff) * b;
-    t >>= 8;
-    t &= 0xff00ff;
-
-    x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b;
-    x &= 0xff00ff00;
-    x |= t;
-    return x;
-}
-
-CARD32
-PictureGradientColor (PictGradientStopPtr stop1,
-		      PictGradientStopPtr stop2,
-		      CARD32	          x)
-{
-     CARD32 current_color, next_color;
-     int	   dist, idist;
-
-     current_color = xRenderColorToCard32 (stop1->color);
-     next_color    = xRenderColorToCard32 (stop2->color);
-
-     dist  = (int) (256 * (x - stop1->x) / (stop2->x - stop1->x));
-     idist = 256 - dist;
-
-     return premultiply (INTERPOLATE_PIXEL_256 (current_color, idist,
-					       next_color, dist));
-}
-
-static void initGradient(SourcePictPtr pGradient, int stopCount,
-                         xFixed *stopPoints, xRenderColor *stopColors, int *error)
-{
-    int i;
-    xFixed dpos;
-
-    if (stopCount <= 0) {
-        *error = BadValue;
-        return;
-    }
-
-    dpos = -1;
-    for (i = 0; i < stopCount; ++i) {
-        if (stopPoints[i] < dpos || stopPoints[i] > (1<<16)) {
-            *error = BadValue;
-            return;
-        }
-        dpos = stopPoints[i];
-    }
-
-    pGradient->gradient.stops = xalloc(stopCount*sizeof(PictGradientStop));
-    if (!pGradient->gradient.stops) {
-        *error = BadAlloc;
-        return;
-    }
-
-    pGradient->gradient.nstops = stopCount;
-
-    for (i = 0; i < stopCount; ++i) {
-        pGradient->gradient.stops[i].x = stopPoints[i];
-        pGradient->gradient.stops[i].color = stopColors[i];
-    }
-
-    pGradient->gradient.class	       = SourcePictClassUnknown;
-    pGradient->gradient.stopRange      = 0xffff;
-    pGradient->gradient.colorTable     = NULL;
-    pGradient->gradient.colorTableSize = 0;
-}
-
-static PicturePtr createSourcePicture(void)
-{
-    PicturePtr pPicture;
-    pPicture = (PicturePtr) xalloc(sizeof(PictureRec));
-    pPicture->pDrawable = 0;
-    pPicture->pFormat = 0;
-    pPicture->pNext = 0;
-    pPicture->format = PICT_a8r8g8b8;
-    pPicture->devPrivates = 0;
-
-    SetPictureToDefaults(pPicture);
-    return pPicture;
-}
-
-PicturePtr
-CreateSolidPicture (Picture pid, xRenderColor *color, int *error)
-{
-    PicturePtr pPicture;
-    pPicture = createSourcePicture();
-    if (!pPicture) {
-        *error = BadAlloc;
-        return 0;
-    }
-
-    pPicture->id = pid;
-    pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictSolidFill));
-    if (!pPicture->pSourcePict) {
-        *error = BadAlloc;
-        xfree(pPicture);
-        return 0;
-    }
-    pPicture->pSourcePict->type = SourcePictTypeSolidFill;
-    pPicture->pSourcePict->solidFill.color = xRenderColorToCard32(*color);
-    return pPicture;
-}
-
-PicturePtr
-CreateLinearGradientPicture (Picture pid, xPointFixed *p1, xPointFixed *p2,
-                             int nStops, xFixed *stops, xRenderColor *colors, int *error)
-{
-    PicturePtr pPicture;
-
-    if (nStops < 2) {
-        *error = BadValue;
-        return 0;
-    }
-
-    pPicture = createSourcePicture();
-    if (!pPicture) {
-        *error = BadAlloc;
-        return 0;
-    }
-
-    pPicture->id = pid;
-    pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictLinearGradient));
-    if (!pPicture->pSourcePict) {
-        *error = BadAlloc;
-        xfree(pPicture);
-        return 0;
-    }
-
-    pPicture->pSourcePict->linear.type = SourcePictTypeLinear;
-    pPicture->pSourcePict->linear.p1 = *p1;
-    pPicture->pSourcePict->linear.p2 = *p2;
-
-    initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
-    if (*error) {
-        xfree(pPicture);
-        return 0;
-    }
-    return pPicture;
-}
-
-#define FixedToDouble(x) ((x)/65536.)
-
-PicturePtr
-CreateRadialGradientPicture (Picture pid, xPointFixed *inner, xPointFixed *outer,
-                             xFixed innerRadius, xFixed outerRadius,
-                             int nStops, xFixed *stops, xRenderColor *colors, int *error)
-{
-    PicturePtr pPicture;
-    PictRadialGradient *radial;
-
-    if (nStops < 2) {
-        *error = BadValue;
-        return 0;
-    }
-
-    pPicture = createSourcePicture();
-    if (!pPicture) {
-        *error = BadAlloc;
-        return 0;
-    }
-
-    pPicture->id = pid;
-    pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictRadialGradient));
-    if (!pPicture->pSourcePict) {
-        *error = BadAlloc;
-        xfree(pPicture);
-        return 0;
-    }
-    radial = &pPicture->pSourcePict->radial;
-
-    radial->type = SourcePictTypeRadial;
-    radial->c1.x = inner->x;
-    radial->c1.y = inner->y;
-    radial->c1.radius = innerRadius;
-    radial->c2.x = outer->x;
-    radial->c2.y = outer->y;
-    radial->c2.radius = outerRadius;
-    radial->cdx = (radial->c2.x - radial->c1.x) / 65536.;
-    radial->cdy = (radial->c2.y - radial->c1.y) / 65536.;
-    radial->dr = (radial->c2.radius - radial->c1.radius) / 65536.;
-    radial->A = (  radial->cdx * radial->cdx
-		   + radial->cdy * radial->cdy
-		   - radial->dr  * radial->dr);
-    
-    initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
-    if (*error) {
-        xfree(pPicture);
-        return 0;
-    }
-    return pPicture;
-}
-
-PicturePtr
-CreateConicalGradientPicture (Picture pid, xPointFixed *center, xFixed angle,
-                              int nStops, xFixed *stops, xRenderColor *colors, int *error)
-{
-    PicturePtr pPicture;
-
-    if (nStops < 2) {
-        *error = BadValue;
-        return 0;
-    }
-
-    pPicture = createSourcePicture();
-    if (!pPicture) {
-        *error = BadAlloc;
-        return 0;
-    }
-
-    pPicture->id = pid;
-    pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictConicalGradient));
-    if (!pPicture->pSourcePict) {
-        *error = BadAlloc;
-        xfree(pPicture);
-        return 0;
-    }
-
-    pPicture->pSourcePict->conical.type = SourcePictTypeConical;
-    pPicture->pSourcePict->conical.center = *center;
-    pPicture->pSourcePict->conical.angle = angle;
-
-    initGradient(pPicture->pSourcePict, nStops, stops, colors, error);
-    if (*error) {
-        xfree(pPicture);
-        return 0;
-    }
-    return pPicture;
-}
-
-#define NEXT_VAL(_type) (vlist ? (_type) *vlist++ : (_type) ulist++->val)
-
-#define NEXT_PTR(_type) ((_type) ulist++->ptr)
-
-int
-ChangePicture (PicturePtr	pPicture,
-	       Mask		vmask,
-	       XID		*vlist,
-	       DevUnion		*ulist,
-	       ClientPtr	client)
-{
-    ScreenPtr pScreen = pPicture->pDrawable ? pPicture->pDrawable->pScreen : 0;
-    PictureScreenPtr ps = pScreen ? GetPictureScreen(pScreen) : 0;
-    BITS32		index2;
-    int			error = 0;
-    BITS32		maskQ;
-    
-    pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
-    maskQ = vmask;
-    while (vmask && !error)
-    {
-	index2 = (BITS32) lowbit (vmask);
-	vmask &= ~index2;
-	pPicture->stateChanges |= index2;
-	switch (index2)
-	{
-	case CPRepeat:
-	    {
-		unsigned int	newr;
-		newr = NEXT_VAL(unsigned int);
-		if (newr <= RepeatReflect)
-		{
-		    pPicture->repeat = (newr != RepeatNone);
-		    pPicture->repeatType = newr;
-		}
-		else
-		{
-		    client->errorValue = newr;
-		    error = BadValue;
-		}
-	    }
-	    break;
-	case CPAlphaMap:
-	    {
-		PicturePtr  pAlpha;
-		
-		if (vlist)
-		{
-		    Picture	pid = NEXT_VAL(Picture);
-
-		    if (pid == None)
-			pAlpha = 0;
-		    else
-		    {
-			error = dixLookupResourceByType((pointer *)&pAlpha, pid,
-						  PictureType, client,
-						  DixReadAccess);
-			if (error != Success)
-			{
-			    client->errorValue = pid;
-			    error = (error == BadValue) ? BadPixmap : error;
-			    break;
-			}
-			if (pAlpha->pDrawable == NULL ||
-			    pAlpha->pDrawable->type != DRAWABLE_PIXMAP)
-			{
-			    client->errorValue = pid;
-			    error = BadMatch;
-			    break;
-			}
-		    }
-		}
-		else
-		    pAlpha = NEXT_PTR(PicturePtr);
-		if (!error)
-		{
-		    if (pAlpha && pAlpha->pDrawable->type == DRAWABLE_PIXMAP)
-			pAlpha->refcnt++;
-		    if (pPicture->alphaMap)
-			FreePicture ((pointer) pPicture->alphaMap, (XID) 0);
-		    pPicture->alphaMap = pAlpha;
-		}
-	    }
-	    break;
-	case CPAlphaXOrigin:
-	    pPicture->alphaOrigin.x = NEXT_VAL(INT16);
-	    break;
-	case CPAlphaYOrigin:
-	    pPicture->alphaOrigin.y = NEXT_VAL(INT16);
-	    break;
-	case CPClipXOrigin:
-	    pPicture->clipOrigin.x = NEXT_VAL(INT16);
-	    break;
-	case CPClipYOrigin:
-	    pPicture->clipOrigin.y = NEXT_VAL(INT16);
-	    break;
-	case CPClipMask:
-	    {
-		Pixmap	    pid;
-		PixmapPtr   pPixmap;
-		int	    clipType;
-                if (!pScreen)
-                    return BadDrawable;
-
-		if (vlist)
-		{
-		    pid = NEXT_VAL(Pixmap);
-		    if (pid == None)
-		    {
-			clipType = CT_NONE;
-			pPixmap = NullPixmap;
-		    }
-		    else
-		    {
-			clipType = CT_PIXMAP;
-			error = dixLookupResourceByType((pointer *)&pPixmap, pid,
-						  RT_PIXMAP, client,
-						  DixReadAccess);
-			if (error != Success)
-			{
-			    client->errorValue = pid;
-			    error = (error == BadValue) ? BadPixmap : error;
-			    break;
-			}
-		    }
-		}
-		else
-		{
-		    pPixmap = NEXT_PTR(PixmapPtr);
-		    if (pPixmap)
-			clipType = CT_PIXMAP;
-		    else
-			clipType = CT_NONE;
-		}
-
-		if (pPixmap)
-		{
-		    if ((pPixmap->drawable.depth != 1) ||
-			(pPixmap->drawable.pScreen != pScreen))
-		    {
-			error = BadMatch;
-			break;
-		    }
-		    else
-		    {
-			clipType = CT_PIXMAP;
-			pPixmap->refcnt++;
-		    }
-		}
-		error = (*ps->ChangePictureClip)(pPicture, clipType,
-						 (pointer)pPixmap, 0);
-		break;
-	    }
-	case CPGraphicsExposure:
-	    {
-		unsigned int	newe;
-		newe = NEXT_VAL(unsigned int);
-		if (newe <= xTrue)
-		    pPicture->graphicsExposures = newe;
-		else
-		{
-		    client->errorValue = newe;
-		    error = BadValue;
-		}
-	    }
-	    break;
-	case CPSubwindowMode:
-	    {
-		unsigned int	news;
-		news = NEXT_VAL(unsigned int);
-		if (news == ClipByChildren || news == IncludeInferiors)
-		    pPicture->subWindowMode = news;
-		else
-		{
-		    client->errorValue = news;
-		    error = BadValue;
-		}
-	    }
-	    break;
-	case CPPolyEdge:
-	    {
-		unsigned int	newe;
-		newe = NEXT_VAL(unsigned int);
-		if (newe == PolyEdgeSharp || newe == PolyEdgeSmooth)
-		    pPicture->polyEdge = newe;
-		else
-		{
-		    client->errorValue = newe;
-		    error = BadValue;
-		}
-	    }
-	    break;
-	case CPPolyMode:
-	    {
-		unsigned int	newm;
-		newm = NEXT_VAL(unsigned int);
-		if (newm == PolyModePrecise || newm == PolyModeImprecise)
-		    pPicture->polyMode = newm;
-		else
-		{
-		    client->errorValue = newm;
-		    error = BadValue;
-		}
-	    }
-	    break;
-	case CPDither:
-	    pPicture->dither = NEXT_VAL(Atom);
-	    break;
-	case CPComponentAlpha:
-	    {
-		unsigned int	newca;
-
-		newca = NEXT_VAL (unsigned int);
-		if (newca <= xTrue)
-		    pPicture->componentAlpha = newca;
-		else
-		{
-		    client->errorValue = newca;
-		    error = BadValue;
-		}
-	    }
-	    break;
-	default:
-	    client->errorValue = maskQ;
-	    error = BadValue;
-	    break;
-	}
-    }
-    if (ps)
-        (*ps->ChangePicture) (pPicture, maskQ);
-    return error;
-}
-
-int
-SetPictureClipRects (PicturePtr	pPicture,
-		     int	xOrigin,
-		     int	yOrigin,
-		     int	nRect,
-		     xRectangle	*rects)
-{
-    ScreenPtr		pScreen = pPicture->pDrawable->pScreen;
-    PictureScreenPtr	ps = GetPictureScreen(pScreen);
-    RegionPtr		clientClip;
-    int			result;
-
-    clientClip = RECTS_TO_REGION(pScreen,
-				 nRect, rects, CT_UNSORTED);
-    if (!clientClip)
-	return BadAlloc;
-    result =(*ps->ChangePictureClip) (pPicture, CT_REGION, 
-				      (pointer) clientClip, 0);
-    if (result == Success)
-    {
-	pPicture->clipOrigin.x = xOrigin;
-	pPicture->clipOrigin.y = yOrigin;
-	pPicture->stateChanges |= CPClipXOrigin|CPClipYOrigin|CPClipMask;
-	pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
-    }
-    return result;
-}
-
-int
-SetPictureClipRegion (PicturePtr    pPicture,
-                      int           xOrigin,
-                      int           yOrigin,
-                      RegionPtr     pRegion)
-{
-    ScreenPtr           pScreen = pPicture->pDrawable->pScreen;
-    PictureScreenPtr    ps = GetPictureScreen(pScreen);
-    RegionPtr           clientClip;
-    int                 result;
-    int                 type;
-
-    if (pRegion)
-    {
-        type = CT_REGION;
-        clientClip = REGION_CREATE (pScreen,
-                                    REGION_EXTENTS(pScreen, pRegion),
-                                    REGION_NUM_RECTS(pRegion));
-        if (!clientClip)
-            return BadAlloc;
-        if (!REGION_COPY (pSCreen, clientClip, pRegion))
-        {
-            REGION_DESTROY (pScreen, clientClip);
-            return BadAlloc;
-        }
-    }
-    else
-    {
-        type = CT_NONE;
-        clientClip = 0;
-    }
-
-    result =(*ps->ChangePictureClip) (pPicture, type,
-                                      (pointer) clientClip, 0);
-    if (result == Success)
-    {
-        pPicture->clipOrigin.x = xOrigin;
-        pPicture->clipOrigin.y = yOrigin;
-        pPicture->stateChanges |= CPClipXOrigin|CPClipYOrigin|CPClipMask;
-        pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
-    }
-    return result;
-}
-
-static Bool
-transformIsIdentity(PictTransform *t)
-{
-    return ((t->matrix[0][0] == t->matrix[1][1]) &&
-            (t->matrix[0][0] == t->matrix[2][2]) &&
-            (t->matrix[0][0] != 0) &&
-            (t->matrix[0][1] == 0) &&
-            (t->matrix[0][2] == 0) &&
-            (t->matrix[1][0] == 0) &&
-            (t->matrix[1][2] == 0) &&
-            (t->matrix[2][0] == 0) &&
-            (t->matrix[2][1] == 0));
-}
-
-int
-SetPictureTransform (PicturePtr	    pPicture,
-		     PictTransform  *transform)
-{
-    if (transform && transformIsIdentity (transform))
-	transform = 0;
-    
-    if (transform)
-    {
-	if (!pPicture->transform)
-	{
-	    pPicture->transform = (PictTransform *) xalloc (sizeof (PictTransform));
-	    if (!pPicture->transform)
-		return BadAlloc;
-	}
-	*pPicture->transform = *transform;
-    }
-    else
-    {
-	if (pPicture->transform)
-	{
-	    xfree (pPicture->transform);
-	    pPicture->transform = 0;
-	}
-    }
-    pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;
-
-    if (pPicture->pDrawable != NULL) {
-	int result;
-	PictureScreenPtr ps = GetPictureScreen(pPicture->pDrawable->pScreen);
-
-	result = (*ps->ChangePictureTransform) (pPicture, transform);
-
-	return result;
-    }
-
-    return Success;
-}
-
-void
-CopyPicture (PicturePtr	pSrc,
-	     Mask	mask,
-	     PicturePtr	pDst)
-{
-    PictureScreenPtr ps = GetPictureScreen(pSrc->pDrawable->pScreen);
-    Mask origMask = mask;
-
-    pDst->serialNumber |= GC_CHANGE_SERIAL_BIT;
-    pDst->stateChanges |= mask;
-
-    while (mask) {
-	Mask bit = lowbit(mask);
-
-	switch (bit)
-	{
-	case CPRepeat:
-	    pDst->repeat = pSrc->repeat;
-	    pDst->repeatType = pSrc->repeatType;
-	    break;
-	case CPAlphaMap:
-	    if (pSrc->alphaMap && pSrc->alphaMap->pDrawable->type == DRAWABLE_PIXMAP)
-		pSrc->alphaMap->refcnt++;
-	    if (pDst->alphaMap)
-		FreePicture ((pointer) pDst->alphaMap, (XID) 0);
-	    pDst->alphaMap = pSrc->alphaMap;
-	    break;
-	case CPAlphaXOrigin:
-	    pDst->alphaOrigin.x = pSrc->alphaOrigin.x;
-	    break;
-	case CPAlphaYOrigin:
-	    pDst->alphaOrigin.y = pSrc->alphaOrigin.y;
-	    break;
-	case CPClipXOrigin:
-	    pDst->clipOrigin.x = pSrc->clipOrigin.x;
-	    break;
-	case CPClipYOrigin:
-	    pDst->clipOrigin.y = pSrc->clipOrigin.y;
-	    break;
-	case CPClipMask:
-	    switch (pSrc->clientClipType) {
-	    case CT_NONE:
-		(*ps->ChangePictureClip)(pDst, CT_NONE, NULL, 0);
-		break;
-	    case CT_REGION:
-		if (!pSrc->clientClip) {
-		    (*ps->ChangePictureClip)(pDst, CT_NONE, NULL, 0);
-		} else {
-		    RegionPtr clientClip;
-		    RegionPtr srcClientClip = (RegionPtr)pSrc->clientClip;
-
-		    clientClip = REGION_CREATE(pSrc->pDrawable->pScreen,
-			REGION_EXTENTS(pSrc->pDrawable->pScreen, srcClientClip),
-			REGION_NUM_RECTS(srcClientClip));
-		    (*ps->ChangePictureClip)(pDst, CT_REGION, clientClip, 0);
-		}
-		break;
-	    default:
-		/* XXX: CT_PIXMAP unimplemented */
-		break;
-	    }
-	    break;
-	case CPGraphicsExposure:
-	    pDst->graphicsExposures = pSrc->graphicsExposures;
-	    break;
-	case CPPolyEdge:
-	    pDst->polyEdge = pSrc->polyEdge;
-	    break;
-	case CPPolyMode:
-	    pDst->polyMode = pSrc->polyMode;
-	    break;
-	case CPDither:
-	    pDst->dither = pSrc->dither;
-	    break;
-	case CPComponentAlpha:
-	    pDst->componentAlpha = pSrc->componentAlpha;
-	    break;
-	}
-	mask &= ~bit;
-    }
-
-    (*ps->ChangePicture)(pDst, origMask);
-}
-
-static void
-ValidateOnePicture (PicturePtr pPicture)
-{
-    if (pPicture->pDrawable && pPicture->serialNumber != pPicture->pDrawable->serialNumber)
-    {
-	PictureScreenPtr    ps = GetPictureScreen(pPicture->pDrawable->pScreen);
-
-	(*ps->ValidatePicture) (pPicture, pPicture->stateChanges);
-	pPicture->stateChanges = 0;
-	pPicture->serialNumber = pPicture->pDrawable->serialNumber;
-    }
-}
-
-void
-ValidatePicture(PicturePtr pPicture)
-{
-    ValidateOnePicture (pPicture);
-    if (pPicture->alphaMap)
-	ValidateOnePicture (pPicture->alphaMap);
-}
-
-int
-FreePicture (pointer	value,
-	     XID	pid)
-{
-    PicturePtr	pPicture = (PicturePtr) value;
-
-    if (--pPicture->refcnt == 0)
-    {
-	if (pPicture->transform)
-	    xfree (pPicture->transform);
-
-	if (pPicture->pSourcePict)
-	{
-	    if (pPicture->pSourcePict->type != SourcePictTypeSolidFill)
-		xfree(pPicture->pSourcePict->linear.stops);
-
-	    xfree(pPicture->pSourcePict);
-	}
-
-	if (pPicture->pDrawable)
-	{
-            ScreenPtr	    pScreen = pPicture->pDrawable->pScreen;
-            PictureScreenPtr    ps = GetPictureScreen(pScreen);
-	
-            if (pPicture->alphaMap)
-                FreePicture ((pointer) pPicture->alphaMap, (XID) 0);
-            (*ps->DestroyPicture) (pPicture);
-            (*ps->DestroyPictureClip) (pPicture);
-            if (pPicture->pDrawable->type == DRAWABLE_WINDOW)
-            {
-                WindowPtr	pWindow = (WindowPtr) pPicture->pDrawable;
-                PicturePtr	*pPrev;
-
-                for (pPrev = (PicturePtr *)dixLookupPrivateAddr
-			 (&pWindow->devPrivates, PictureWindowPrivateKey);
-                     *pPrev;
-                     pPrev = &(*pPrev)->pNext)
-                {
-                    if (*pPrev == pPicture)
-                    {
-                        *pPrev = pPicture->pNext;
-                        break;
-                    }
-                }
-            }
-            else if (pPicture->pDrawable->type == DRAWABLE_PIXMAP)
-            {
-                (*pScreen->DestroyPixmap) ((PixmapPtr)pPicture->pDrawable);
-            }
-        }
-	dixFreePrivates(pPicture->devPrivates);
-	xfree (pPicture);
-    }
-    return Success;
-}
-
-int
-FreePictFormat (pointer	pPictFormat,
-		XID     pid)
-{
-    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,
-		   INT16 xSrc, INT16 ySrc, CARD16 width, CARD16 height)
-{
-    Bool no_src_alpha, no_dst_alpha;
-
-    /* Sampling off the edge of a RepeatNone picture introduces alpha
-     * even if the picture itself doesn't have alpha. We don't try to
-     * detect every case where we don't sample off the edge, just the
-     * simplest case where there is no transform on the source
-     * picture.
-     */
-    no_src_alpha = PICT_FORMAT_COLOR(pSrc->format) &&
-                   PICT_FORMAT_A(pSrc->format) == 0 &&
-                   (pSrc->repeatType != RepeatNone ||
-		    (!pSrc->transform &&
-		     xSrc >= 0 && ySrc >= 0 &&
-		     xSrc + width <= pSrc->pDrawable->width &&
-		     ySrc + height <= pSrc->pDrawable->height)) &&
-                   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,
-		  PicturePtr	pMask,
-		  PicturePtr	pDst,
-		  INT16		xSrc,
-		  INT16		ySrc,
-		  INT16		xMask,
-		  INT16		yMask,
-		  INT16		xDst,
-		  INT16		yDst,
-		  CARD16	width,
-		  CARD16	height)
-{
-    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);
-    
-    ValidatePicture (pSrc);
-    if (pMask)
-	ValidatePicture (pMask);
-    ValidatePicture (pDst);
-
-    op = ReduceCompositeOp (op, pSrc, pMask, pDst, xSrc, ySrc, width, height);
-    if (op == PictOpDst)
-	return;
-
-    (*ps->Composite) (op,
-		       pSrc,
-		       pMask,
-		       pDst,
-		       xSrc,
-		       ySrc,
-		       xMask,
-		       yMask,
-		       xDst,
-		       yDst,
-		       width,
-		       height);
-}
-
-void
-CompositeRects (CARD8		op,
-		PicturePtr	pDst,
-		xRenderColor	*color,
-		int		nRect,
-		xRectangle      *rects)
-{
-    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);
-    
-    ValidatePicture (pDst);
-    (*ps->CompositeRects) (op, pDst, color, nRect, rects);
-}
-
-void
-CompositeTrapezoids (CARD8	    op,
-		     PicturePtr	    pSrc,
-		     PicturePtr	    pDst,
-		     PictFormatPtr  maskFormat,
-		     INT16	    xSrc,
-		     INT16	    ySrc,
-		     int	    ntrap,
-		     xTrapezoid	    *traps)
-{
-    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);
-    
-    ValidatePicture (pSrc);
-    ValidatePicture (pDst);
-    (*ps->Trapezoids) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntrap, traps);
-}
-
-void
-CompositeTriangles (CARD8	    op,
-		    PicturePtr	    pSrc,
-		    PicturePtr	    pDst,
-		    PictFormatPtr   maskFormat,
-		    INT16	    xSrc,
-		    INT16	    ySrc,
-		    int		    ntriangles,
-		    xTriangle	    *triangles)
-{
-    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);
-    
-    ValidatePicture (pSrc);
-    ValidatePicture (pDst);
-    (*ps->Triangles) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntriangles, triangles);
-}
-
-void
-CompositeTriStrip (CARD8	    op,
-		   PicturePtr	    pSrc,
-		   PicturePtr	    pDst,
-		   PictFormatPtr    maskFormat,
-		   INT16	    xSrc,
-		   INT16	    ySrc,
-		   int		    npoints,
-		   xPointFixed	    *points)
-{
-    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);
-    
-    ValidatePicture (pSrc);
-    ValidatePicture (pDst);
-    (*ps->TriStrip) (op, pSrc, pDst, maskFormat, xSrc, ySrc, npoints, points);
-}
-
-void
-CompositeTriFan (CARD8		op,
-		 PicturePtr	pSrc,
-		 PicturePtr	pDst,
-		 PictFormatPtr	maskFormat,
-		 INT16		xSrc,
-		 INT16		ySrc,
-		 int		npoints,
-		 xPointFixed	*points)
-{
-    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);
-    
-    ValidatePicture (pSrc);
-    ValidatePicture (pDst);
-    (*ps->TriFan) (op, pSrc, pDst, maskFormat, xSrc, ySrc, npoints, points);
-}
-
-void
-AddTraps (PicturePtr	pPicture,
-	  INT16		xOff,
-	  INT16		yOff,
-	  int		ntrap,
-	  xTrap		*traps)
-{
-    PictureScreenPtr	ps = GetPictureScreen(pPicture->pDrawable->pScreen);
-    
-    ValidatePicture (pPicture);
-    (*ps->AddTraps) (pPicture, xOff, yOff, ntrap, traps);
-}
-
+/*

+ *

+ * Copyright © 2000 SuSE, Inc.

+ *

+ * 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 SuSE not be used in advertising or

+ * publicity pertaining to distribution of the software without specific,

+ * written prior permission.  SuSE makes no representations about the

+ * suitability of this software for any purpose.  It is provided "as is"

+ * without express or implied warranty.

+ *

+ * SuSE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL

+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL SuSE

+ * 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.

+ *

+ * Author:  Keith Packard, SuSE, Inc.

+ */

+

+#ifdef HAVE_DIX_CONFIG_H

+#include <dix-config.h>

+#endif

+

+#include "misc.h"

+#include "scrnintstr.h"

+#include "os.h"

+#include "regionstr.h"

+#include "validate.h"

+#include "windowstr.h"

+#include "input.h"

+#include "resource.h"

+#include "colormapst.h"

+#include "cursorstr.h"

+#include "dixstruct.h"

+#include "gcstruct.h"

+#include "servermd.h"

+#include "picturestr.h"

+#include "xace.h"

+

+static int PictureScreenPrivateKeyIndex;

+DevPrivateKey PictureScreenPrivateKey = &PictureScreenPrivateKeyIndex;

+static int PictureWindowPrivateKeyIndex;

+DevPrivateKey	PictureWindowPrivateKey = &PictureWindowPrivateKeyIndex;

+static int	PictureGeneration;

+RESTYPE		PictureType;

+RESTYPE		PictFormatType;

+RESTYPE		GlyphSetType;

+int		PictureCmapPolicy = PictureCmapPolicyDefault;

+

+Bool

+PictureDestroyWindow (WindowPtr pWindow)

+{

+    ScreenPtr		pScreen = pWindow->drawable.pScreen;

+    PicturePtr		pPicture;

+    PictureScreenPtr    ps = GetPictureScreen(pScreen);

+    Bool		ret;

+

+    while ((pPicture = GetPictureWindow(pWindow)))

+    {

+	SetPictureWindow(pWindow, pPicture->pNext);

+	if (pPicture->id)

+	    FreeResource (pPicture->id, PictureType);

+	FreePicture ((pointer) pPicture, pPicture->id);

+    }

+    pScreen->DestroyWindow = ps->DestroyWindow;

+    ret = (*pScreen->DestroyWindow) (pWindow);

+    ps->DestroyWindow = pScreen->DestroyWindow;

+    pScreen->DestroyWindow = PictureDestroyWindow;

+    return ret;

+}

+

+Bool

+PictureCloseScreen (int index, ScreenPtr pScreen)

+{

+    PictureScreenPtr    ps = GetPictureScreen(pScreen);

+    Bool                ret;

+    int			n;

+

+    pScreen->CloseScreen = ps->CloseScreen;

+    ret = (*pScreen->CloseScreen) (index, pScreen);

+    PictureResetFilters (pScreen);

+    for (n = 0; n < ps->nformats; n++)

+	if (ps->formats[n].type == PictTypeIndexed)

+	    (*ps->CloseIndexed) (pScreen, &ps->formats[n]);

+    GlyphUninit (pScreen);

+    SetPictureScreen(pScreen, 0);

+    xfree (ps->formats);

+    xfree (ps);

+    return ret;

+}

+

+void

+PictureStoreColors (ColormapPtr pColormap, int ndef, xColorItem *pdef)

+{

+    ScreenPtr		pScreen = pColormap->pScreen;

+    PictureScreenPtr    ps = GetPictureScreen(pScreen);

+

+    pScreen->StoreColors = ps->StoreColors;

+    (*pScreen->StoreColors) (pColormap, ndef, pdef);

+    ps->StoreColors = pScreen->StoreColors;

+    pScreen->StoreColors = PictureStoreColors;

+

+    if (pColormap->class == PseudoColor || pColormap->class == GrayScale)

+    {

+	PictFormatPtr	format = ps->formats;

+	int		nformats = ps->nformats;

+

+	while (nformats--)

+	{

+	    if (format->type == PictTypeIndexed &&

+		format->index.pColormap == pColormap)

+	    {

+		(*ps->UpdateIndexed) (pScreen, format, ndef, pdef);

+		break;

+	    }

+	    format++;

+	}

+    }

+}

+

+static int

+visualDepth (ScreenPtr pScreen, VisualPtr pVisual)

+{

+    int		d, v;

+    DepthPtr	pDepth;

+

+    for (d = 0; d < pScreen->numDepths; d++)

+    {

+	pDepth = &pScreen->allowedDepths[d];

+	for (v = 0; v < pDepth->numVids; v++)

+	    if (pDepth->vids[v] == pVisual->vid)

+		return pDepth->depth;

+    }

+    return 0;

+}

+

+typedef struct _formatInit {

+    CARD32  format;

+    CARD8   depth;

+} FormatInitRec, *FormatInitPtr;

+

+static int

+addFormat (FormatInitRec    formats[256],

+	   int		    nformat,

+	   CARD32	    format,

+	   CARD8	    depth)

+{

+    int	n;

+

+    for (n = 0; n < nformat; n++)

+	if (formats[n].format == format && formats[n].depth == depth)

+	    return nformat;

+    formats[nformat].format = format;

+    formats[nformat].depth = depth;

+    return ++nformat;

+}

+

+#define Mask(n)	((n) == 32 ? 0xffffffff : ((1 << (n))-1))

+

+PictFormatPtr

+PictureCreateDefaultFormats (ScreenPtr pScreen, int *nformatp)

+{

+    int		    nformats, f;

+    PictFormatPtr   pFormats;

+    FormatInitRec   formats[1024];

+    CARD32	    format;

+    CARD8	    depth;

+    VisualPtr	    pVisual;

+    int		    v;

+    int		    bpp;

+    int		    type;

+    int		    r, g, b;

+    int		    d;

+    DepthPtr	    pDepth;

+

+    nformats = 0;

+    /* formats required by protocol */

+    formats[nformats].format = PICT_a1;

+    formats[nformats].depth = 1;

+    nformats++;

+    formats[nformats].format = PICT_FORMAT(BitsPerPixel(8),

+					   PICT_TYPE_A,

+					   8, 0, 0, 0);

+    formats[nformats].depth = 8;

+    nformats++;

+    formats[nformats].format = PICT_FORMAT(BitsPerPixel(4),

+					   PICT_TYPE_A,

+					   4, 0, 0, 0);

+    formats[nformats].depth = 4;

+    nformats++;

+    formats[nformats].format = PICT_a8r8g8b8;

+    formats[nformats].depth = 32;

+    nformats++;

+    formats[nformats].format = PICT_x8r8g8b8;

+    formats[nformats].depth = 32;

+    nformats++;

+    formats[nformats].format = PICT_b8g8r8a8;

+    formats[nformats].depth = 32;

+    nformats++;

+    formats[nformats].format = PICT_b8g8r8x8;

+    formats[nformats].depth = 32;

+    nformats++;

+

+    /* now look through the depths and visuals adding other formats */

+    for (v = 0; v < pScreen->numVisuals; v++)

+    {

+	pVisual = &pScreen->visuals[v];

+	depth = visualDepth (pScreen, pVisual);

+	if (!depth)

+	    continue;

+    	bpp = BitsPerPixel (depth);

+	switch (pVisual->class) {

+	case DirectColor:

+	case TrueColor:

+	    r = Ones (pVisual->redMask);

+	    g = Ones (pVisual->greenMask);

+	    b = Ones (pVisual->blueMask);

+	    type = PICT_TYPE_OTHER;

+	    /*

+	     * Current rendering code supports only three direct formats,

+	     * fields must be packed together at the bottom of the pixel

+	     */

+	    if (pVisual->offsetBlue == 0 &&

+		pVisual->offsetGreen == b &&

+		pVisual->offsetRed == b + g)

+	    {

+		type = PICT_TYPE_ARGB;

+	    }

+	    else if (pVisual->offsetRed == 0 &&

+		     pVisual->offsetGreen == r && 

+		     pVisual->offsetBlue == r + g)

+	    {

+		type = PICT_TYPE_ABGR;

+	    }

+	    else if (pVisual->offsetRed == pVisual->offsetGreen - r &&

+		     pVisual->offsetGreen == pVisual->offsetBlue - g && 

+		     pVisual->offsetBlue == bpp - b)

+	    {

+		type = PICT_TYPE_BGRA;

+	    }

+	    if (type != PICT_TYPE_OTHER)

+	    {

+		format = PICT_FORMAT(bpp, type, 0, r, g, b);

+		nformats = addFormat (formats, nformats, format, depth);

+	    }

+	    break;

+	case StaticColor:

+	case PseudoColor:

+	    format = PICT_VISFORMAT (bpp, PICT_TYPE_COLOR, v);

+	    nformats = addFormat (formats, nformats, format, depth);

+	    break;

+	case StaticGray:

+	case GrayScale:

+	    format = PICT_VISFORMAT (bpp, PICT_TYPE_GRAY, v);

+	    nformats = addFormat (formats, nformats, format, depth);

+	    break;

+	}

+    }

+    /*

+     * Walk supported depths and add useful Direct formats

+     */

+    for (d = 0; d < pScreen->numDepths; d++)

+    {

+	pDepth = &pScreen->allowedDepths[d];

+	bpp = BitsPerPixel (pDepth->depth);

+	format = 0;

+	switch (bpp) {

+	case 16:

+	    /* depth 12 formats */

+	    if (pDepth->depth >= 12)

+	    {

+		nformats = addFormat (formats, nformats,

+				      PICT_x4r4g4b4, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_x4b4g4r4, pDepth->depth);

+	    }

+	    /* depth 15 formats */

+	    if (pDepth->depth >= 15)

+	    {

+		nformats = addFormat (formats, nformats,

+				      PICT_x1r5g5b5, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_x1b5g5r5, pDepth->depth);

+	    }

+	    /* depth 16 formats */

+	    if (pDepth->depth >= 16) 

+	    {

+		nformats = addFormat (formats, nformats,

+				      PICT_a1r5g5b5, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_a1b5g5r5, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_r5g6b5, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_b5g6r5, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_a4r4g4b4, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_a4b4g4r4, pDepth->depth);

+	    }

+	    break;

+	case 24:

+	    if (pDepth->depth >= 24)

+	    {

+		nformats = addFormat (formats, nformats,

+				      PICT_r8g8b8, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_b8g8r8, pDepth->depth);

+	    }

+	    break;

+	case 32:

+	    if (pDepth->depth >= 24)

+	    {

+		nformats = addFormat (formats, nformats,

+				      PICT_x8r8g8b8, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_x8b8g8r8, pDepth->depth);

+	    }

+	    if (pDepth->depth >= 30)

+	    {

+		nformats = addFormat (formats, nformats,

+				      PICT_a2r10g10b10, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_x2r10g10b10, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_a2b10g10r10, pDepth->depth);

+		nformats = addFormat (formats, nformats,

+				      PICT_x2b10g10r10, pDepth->depth);

+	    }

+	    break;

+	}

+    }

+    

+

+    pFormats = xcalloc (nformats, sizeof (PictFormatRec));

+    if (!pFormats)

+	return 0;

+    for (f = 0; f < nformats; f++)

+    {

+        pFormats[f].id = FakeClientID (0);

+	pFormats[f].depth = formats[f].depth;

+	format = formats[f].format;

+	pFormats[f].format = format;

+	switch (PICT_FORMAT_TYPE(format)) {

+	case PICT_TYPE_ARGB:

+	    pFormats[f].type = PictTypeDirect;

+	    

+	    pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));

+	    if (pFormats[f].direct.alphaMask)

+		pFormats[f].direct.alpha = (PICT_FORMAT_R(format) +

+					    PICT_FORMAT_G(format) +

+					    PICT_FORMAT_B(format));

+	    

+	    pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));

+	    pFormats[f].direct.red = (PICT_FORMAT_G(format) + 

+				      PICT_FORMAT_B(format));

+	    

+	    pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));

+	    pFormats[f].direct.green = PICT_FORMAT_B(format);

+	    

+	    pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));

+	    pFormats[f].direct.blue = 0;

+	    break;

+

+	case PICT_TYPE_ABGR:

+	    pFormats[f].type = PictTypeDirect;

+	    

+	    pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));

+	    if (pFormats[f].direct.alphaMask)

+		pFormats[f].direct.alpha = (PICT_FORMAT_B(format) +

+					    PICT_FORMAT_G(format) +

+					    PICT_FORMAT_R(format));

+	    

+	    pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));

+	    pFormats[f].direct.blue = (PICT_FORMAT_G(format) + 

+				       PICT_FORMAT_R(format));

+	    

+	    pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));

+	    pFormats[f].direct.green = PICT_FORMAT_R(format);

+	    

+	    pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));

+	    pFormats[f].direct.red = 0;

+	    break;

+

+	case PICT_TYPE_BGRA:

+	    pFormats[f].type = PictTypeDirect;

+	    

+	    pFormats[f].direct.blueMask = Mask(PICT_FORMAT_B(format));

+	    pFormats[f].direct.blue = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format));

+

+	    pFormats[f].direct.greenMask = Mask(PICT_FORMAT_G(format));

+	    pFormats[f].direct.green = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format) -

+					PICT_FORMAT_G(format));

+

+	    pFormats[f].direct.redMask = Mask(PICT_FORMAT_R(format));

+	    pFormats[f].direct.red = (PICT_FORMAT_BPP(format) - PICT_FORMAT_B(format) -

+				      PICT_FORMAT_G(format) - PICT_FORMAT_R(format));

+

+	    pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));

+	    pFormats[f].direct.alpha = 0;

+	    break;

+

+	case PICT_TYPE_A:

+	    pFormats[f].type = PictTypeDirect;

+

+	    pFormats[f].direct.alpha = 0;

+	    pFormats[f].direct.alphaMask = Mask(PICT_FORMAT_A(format));

+

+	    /* remaining fields already set to zero */

+	    break;

+	    

+	case PICT_TYPE_COLOR:

+	case PICT_TYPE_GRAY:

+	    pFormats[f].type = PictTypeIndexed;

+	    pFormats[f].index.vid = pScreen->visuals[PICT_FORMAT_VIS(format)].vid;

+	    break;

+	}

+    }

+    *nformatp = nformats;

+    return pFormats;

+}

+

+static VisualPtr

+PictureFindVisual (ScreenPtr pScreen, VisualID visual)

+{

+    int         i;

+    VisualPtr   pVisual;

+    for (i = 0, pVisual = pScreen->visuals;

+         i < pScreen->numVisuals;

+         i++, pVisual++)

+    {

+        if (pVisual->vid == visual)

+            return pVisual;

+    }

+    return 0;

+}

+

+Bool

+PictureInitIndexedFormat(ScreenPtr pScreen, PictFormatPtr format)

+{

+    PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);

+

+    if (format->type != PictTypeIndexed || format->index.pColormap)

+	return TRUE;

+

+    if (format->index.vid == pScreen->rootVisual) {

+	dixLookupResourceByType((pointer *)&format->index.pColormap,

+				pScreen->defColormap, RT_COLORMAP,

+				serverClient, DixGetAttrAccess);

+    } else {

+	VisualPtr pVisual = PictureFindVisual(pScreen, format->index.vid);

+	if (CreateColormap(FakeClientID (0), pScreen, pVisual,

+		    &format->index.pColormap, AllocNone, 0)

+		!= Success)

+	    return FALSE;

+    }

+    if (!ps->InitIndexed(pScreen, format))

+	return FALSE;

+    return TRUE;

+}

+

+static Bool

+PictureInitIndexedFormats (ScreenPtr pScreen)

+{

+    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);

+    PictFormatPtr	format;

+    int			nformat;

+

+    if (!ps)

+	return FALSE;

+    format = ps->formats;

+    nformat = ps->nformats;

+    while (nformat--)

+	if (!PictureInitIndexedFormat(pScreen, format++))

+	    return FALSE;

+    return TRUE;

+}

+

+Bool

+PictureFinishInit (void)

+{

+    int	    s;

+

+    for (s = 0; s < screenInfo.numScreens; s++)

+    {

+	if (!PictureInitIndexedFormats (screenInfo.screens[s]))

+	    return FALSE;

+	(void) AnimCurInit (screenInfo.screens[s]);

+    }

+

+    return TRUE;

+}

+

+Bool

+PictureSetSubpixelOrder (ScreenPtr pScreen, int subpixel)

+{

+    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);

+

+    if (!ps)

+	return FALSE;

+    ps->subpixel = subpixel;

+    return TRUE;

+    

+}

+

+int

+PictureGetSubpixelOrder (ScreenPtr pScreen)

+{

+    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);

+

+    if (!ps)

+	return SubPixelUnknown;

+    return ps->subpixel;

+}

+    

+PictFormatPtr

+PictureMatchVisual (ScreenPtr pScreen, int depth, VisualPtr pVisual)

+{

+    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);

+    PictFormatPtr	format;

+    int			nformat;

+    int			type;

+

+    if (!ps)

+	return 0;

+    format = ps->formats;

+    nformat = ps->nformats;

+    switch (pVisual->class) {

+    case StaticGray:

+    case GrayScale:

+    case StaticColor:

+    case PseudoColor:

+	type = PictTypeIndexed;

+	break;

+    case TrueColor:

+    case DirectColor:

+	type = PictTypeDirect;

+	break;

+    default:

+	return 0;

+    }

+    while (nformat--)

+    {

+	if (format->depth == depth && format->type == type)

+	{

+	    if (type == PictTypeIndexed)

+	    {

+		if (format->index.vid == pVisual->vid)

+		    return format;

+	    }

+	    else

+	    {

+		if (format->direct.redMask << format->direct.red == 

+		    pVisual->redMask &&

+		    format->direct.greenMask << format->direct.green == 

+		    pVisual->greenMask &&

+		    format->direct.blueMask << format->direct.blue == 

+		    pVisual->blueMask)

+		{

+		    return format;

+		}

+	    }

+	}

+	format++;

+    }

+    return 0;

+}

+

+PictFormatPtr

+PictureMatchFormat (ScreenPtr pScreen, int depth, CARD32 f)

+{

+    PictureScreenPtr    ps = GetPictureScreenIfSet(pScreen);

+    PictFormatPtr	format;

+    int			nformat;

+

+    if (!ps)

+	return 0;

+    format = ps->formats;

+    nformat = ps->nformats;

+    while (nformat--)

+    {

+	if (format->depth == depth && format->format == (f & 0xffffff))

+	    return format;

+	format++;

+    }

+    return 0;

+}

+

+int

+PictureParseCmapPolicy (const char *name)

+{

+    if ( strcmp (name, "default" ) == 0)

+	return PictureCmapPolicyDefault;

+    else if ( strcmp (name, "mono" ) == 0)

+	return PictureCmapPolicyMono;

+    else if ( strcmp (name, "gray" ) == 0)

+	return PictureCmapPolicyGray;

+    else if ( strcmp (name, "color" ) == 0)

+	return PictureCmapPolicyColor;

+    else if ( strcmp (name, "all" ) == 0)

+	return PictureCmapPolicyAll;

+    else

+	return PictureCmapPolicyInvalid;

+}

+

+Bool

+PictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)

+{

+    PictureScreenPtr	ps;

+    int			n;

+    CARD32		type, a, r, g, b;

+    

+    if (PictureGeneration != serverGeneration)

+    {

+	PictureType = CreateNewResourceType (FreePicture, "PICTURE");

+	if (!PictureType)

+	    return FALSE;

+	PictFormatType = CreateNewResourceType (FreePictFormat, "PICTFORMAT");

+	if (!PictFormatType)

+	    return FALSE;

+	GlyphSetType = CreateNewResourceType (FreeGlyphSet, "GLYPHSET");

+	if (!GlyphSetType)

+	    return FALSE;

+	PictureGeneration = serverGeneration;

+    }

+    if (!formats)

+    {

+	formats = PictureCreateDefaultFormats (pScreen, &nformats);

+	if (!formats)

+	    return FALSE;

+    }

+    for (n = 0; n < nformats; n++)

+    {

+	if (!AddResource (formats[n].id, PictFormatType, (pointer) (formats+n)))

+	{

+	    xfree (formats);

+	    return FALSE;

+	}

+	if (formats[n].type == PictTypeIndexed)

+	{

+            VisualPtr   pVisual = PictureFindVisual (pScreen, formats[n].index.vid);

+	    if ((pVisual->class | DynamicClass) == PseudoColor)

+		type = PICT_TYPE_COLOR;

+	    else

+		type = PICT_TYPE_GRAY;

+	    a = r = g = b = 0;

+	}

+	else

+	{

+	    if ((formats[n].direct.redMask|

+		 formats[n].direct.blueMask|

+		 formats[n].direct.greenMask) == 0)

+		type = PICT_TYPE_A;

+	    else if (formats[n].direct.red > formats[n].direct.blue)

+		type = PICT_TYPE_ARGB;

+	    else if (formats[n].direct.red == 0)

+		type = PICT_TYPE_ABGR;

+	    else

+		type = PICT_TYPE_BGRA;

+	    a = Ones (formats[n].direct.alphaMask);

+	    r = Ones (formats[n].direct.redMask);

+	    g = Ones (formats[n].direct.greenMask);

+	    b = Ones (formats[n].direct.blueMask);

+	}

+	formats[n].format = PICT_FORMAT(0,type,a,r,g,b);

+    }

+    ps = (PictureScreenPtr) xalloc (sizeof (PictureScreenRec));

+    if (!ps)

+    {

+	xfree (formats);

+	return FALSE;

+    }

+    SetPictureScreen(pScreen, ps);

+

+    ps->formats = formats;

+    ps->fallback = formats;

+    ps->nformats = nformats;

+    

+    ps->filters = 0;

+    ps->nfilters = 0;

+    ps->filterAliases = 0;

+    ps->nfilterAliases = 0;

+

+    ps->subpixel = SubPixelUnknown;

+

+    ps->CloseScreen = pScreen->CloseScreen;

+    ps->DestroyWindow = pScreen->DestroyWindow;

+    ps->StoreColors = pScreen->StoreColors;

+    pScreen->DestroyWindow = PictureDestroyWindow;

+    pScreen->CloseScreen = PictureCloseScreen;

+    pScreen->StoreColors = PictureStoreColors;

+

+    if (!PictureSetDefaultFilters (pScreen))

+    {

+	PictureResetFilters (pScreen);

+	SetPictureScreen(pScreen, 0);

+	xfree (formats);

+	xfree (ps);

+	return FALSE;

+    }

+

+    return TRUE;

+}

+

+void

+SetPictureToDefaults (PicturePtr    pPicture)

+{

+    pPicture->refcnt = 1;

+    pPicture->repeat = 0;

+    pPicture->graphicsExposures = FALSE;

+    pPicture->subWindowMode = ClipByChildren;

+    pPicture->polyEdge = PolyEdgeSharp;

+    pPicture->polyMode = PolyModePrecise;

+    pPicture->freeCompClip = FALSE;

+    pPicture->clientClipType = CT_NONE;

+    pPicture->componentAlpha = FALSE;

+    pPicture->repeatType = RepeatNone;

+

+    pPicture->alphaMap = 0;

+    pPicture->alphaOrigin.x = 0;

+    pPicture->alphaOrigin.y = 0;

+

+    pPicture->clipOrigin.x = 0;

+    pPicture->clipOrigin.y = 0;

+    pPicture->clientClip = 0;

+

+    pPicture->transform = 0;

+

+    pPicture->dither = None;

+    pPicture->filter = PictureGetFilterId (FilterNearest, -1, TRUE);

+    pPicture->filter_params = 0;

+    pPicture->filter_nparams = 0;

+

+    pPicture->serialNumber = GC_CHANGE_SERIAL_BIT;

+    pPicture->stateChanges = (1 << (CPLastBit+1)) - 1;

+    pPicture->pSourcePict = 0;

+}

+

+PicturePtr

+CreatePicture (Picture		pid,

+	       DrawablePtr	pDrawable,

+	       PictFormatPtr	pFormat,

+	       Mask		vmask,

+	       XID		*vlist,

+	       ClientPtr	client,

+	       int		*error)

+{

+    PicturePtr		pPicture;

+    PictureScreenPtr	ps = GetPictureScreen(pDrawable->pScreen);

+

+    pPicture = (PicturePtr)xalloc(sizeof(PictureRec));

+    if (!pPicture)

+    {

+	*error = BadAlloc;

+	return 0;

+    }

+

+    pPicture->id = pid;

+    pPicture->pDrawable = pDrawable;

+    pPicture->pFormat = pFormat;

+    pPicture->format = pFormat->format | (pDrawable->bitsPerPixel << 24);

+    pPicture->devPrivates = NULL;

+

+    /* security creation/labeling check */

+    *error = XaceHook(XACE_RESOURCE_ACCESS, client, pid, PictureType, pPicture,

+		      RT_PIXMAP, pDrawable, DixCreateAccess|DixSetAttrAccess);

+    if (*error != Success)

+	goto out;

+

+    if (pDrawable->type == DRAWABLE_PIXMAP)

+    {

+	++((PixmapPtr)pDrawable)->refcnt;

+	pPicture->pNext = 0;

+    }

+    else

+    {

+	pPicture->pNext = GetPictureWindow(((WindowPtr) pDrawable));

+	SetPictureWindow(((WindowPtr) pDrawable), pPicture);

+    }

+

+    SetPictureToDefaults (pPicture);

+    

+    if (vmask)

+	*error = ChangePicture (pPicture, vmask, vlist, 0, client);

+    else

+	*error = Success;

+    if (*error == Success)

+	*error = (*ps->CreatePicture) (pPicture);

+out:

+    if (*error != Success)

+    {

+	FreePicture (pPicture, (XID) 0);

+	pPicture = 0;

+    }

+    return pPicture;

+}

+

+static CARD32 xRenderColorToCard32(xRenderColor c)

+{

+    return

+        (c.alpha >> 8 << 24) |

+        (c.red >> 8 << 16) |

+        (c.green & 0xff00) |

+        (c.blue >> 8);

+}

+

+static unsigned int premultiply(unsigned int x)

+{

+    unsigned int a = x >> 24;

+    unsigned int t = (x & 0xff00ff) * a + 0x800080;

+    t = (t + ((t >> 8) & 0xff00ff)) >> 8;

+    t &= 0xff00ff;

+

+    x = ((x >> 8) & 0xff) * a + 0x80;

+    x = (x + ((x >> 8) & 0xff));

+    x &= 0xff00;

+    x |= t | (a << 24);

+    return x;

+}

+

+static unsigned int INTERPOLATE_PIXEL_256(unsigned int x, unsigned int a,

+                                          unsigned int y, unsigned int b)

+{

+    CARD32 t = (x & 0xff00ff) * a + (y & 0xff00ff) * b;

+    t >>= 8;

+    t &= 0xff00ff;

+

+    x = ((x >> 8) & 0xff00ff) * a + ((y >> 8) & 0xff00ff) * b;

+    x &= 0xff00ff00;

+    x |= t;

+    return x;

+}

+

+CARD32

+PictureGradientColor (PictGradientStopPtr stop1,

+		      PictGradientStopPtr stop2,

+		      CARD32	          x)

+{

+     CARD32 current_color, next_color;

+     int	   dist, idist;

+

+     current_color = xRenderColorToCard32 (stop1->color);

+     next_color    = xRenderColorToCard32 (stop2->color);

+

+     dist  = (int) (256 * (x - stop1->x) / (stop2->x - stop1->x));

+     idist = 256 - dist;

+

+     return premultiply (INTERPOLATE_PIXEL_256 (current_color, idist,

+					       next_color, dist));

+}

+

+static void initGradient(SourcePictPtr pGradient, int stopCount,

+                         xFixed *stopPoints, xRenderColor *stopColors, int *error)

+{

+    int i;

+    xFixed dpos;

+

+    if (stopCount <= 0) {

+        *error = BadValue;

+        return;

+    }

+

+    dpos = -1;

+    for (i = 0; i < stopCount; ++i) {

+        if (stopPoints[i] < dpos || stopPoints[i] > (1<<16)) {

+            *error = BadValue;

+            return;

+        }

+        dpos = stopPoints[i];

+    }

+

+    pGradient->gradient.stops = xalloc(stopCount*sizeof(PictGradientStop));

+    if (!pGradient->gradient.stops) {

+        *error = BadAlloc;

+        return;

+    }

+

+    pGradient->gradient.nstops = stopCount;

+

+    for (i = 0; i < stopCount; ++i) {

+        pGradient->gradient.stops[i].x = stopPoints[i];

+        pGradient->gradient.stops[i].color = stopColors[i];

+    }

+

+    pGradient->gradient.class	       = SourcePictClassUnknown;

+    pGradient->gradient.stopRange      = 0xffff;

+    pGradient->gradient.colorTable     = NULL;

+    pGradient->gradient.colorTableSize = 0;

+}

+

+static PicturePtr createSourcePicture(void)

+{

+    PicturePtr pPicture;

+    pPicture = (PicturePtr) xalloc(sizeof(PictureRec));

+    pPicture->pDrawable = 0;

+    pPicture->pFormat = 0;

+    pPicture->pNext = 0;

+    pPicture->format = PICT_a8r8g8b8;

+    pPicture->devPrivates = 0;

+

+    SetPictureToDefaults(pPicture);

+    return pPicture;

+}

+

+PicturePtr

+CreateSolidPicture (Picture pid, xRenderColor *color, int *error)

+{

+    PicturePtr pPicture;

+    pPicture = createSourcePicture();

+    if (!pPicture) {

+        *error = BadAlloc;

+        return 0;

+    }

+

+    pPicture->id = pid;

+    pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictSolidFill));

+    if (!pPicture->pSourcePict) {

+        *error = BadAlloc;

+        xfree(pPicture);

+        return 0;

+    }

+    pPicture->pSourcePict->type = SourcePictTypeSolidFill;

+    pPicture->pSourcePict->solidFill.color = xRenderColorToCard32(*color);

+    return pPicture;

+}

+

+PicturePtr

+CreateLinearGradientPicture (Picture pid, xPointFixed *p1, xPointFixed *p2,

+                             int nStops, xFixed *stops, xRenderColor *colors, int *error)

+{

+    PicturePtr pPicture;

+

+    if (nStops < 2) {

+        *error = BadValue;

+        return 0;

+    }

+

+    pPicture = createSourcePicture();

+    if (!pPicture) {

+        *error = BadAlloc;

+        return 0;

+    }

+

+    pPicture->id = pid;

+    pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictLinearGradient));

+    if (!pPicture->pSourcePict) {

+        *error = BadAlloc;

+        xfree(pPicture);

+        return 0;

+    }

+

+    pPicture->pSourcePict->linear.type = SourcePictTypeLinear;

+    pPicture->pSourcePict->linear.p1 = *p1;

+    pPicture->pSourcePict->linear.p2 = *p2;

+

+    initGradient(pPicture->pSourcePict, nStops, stops, colors, error);

+    if (*error) {

+        xfree(pPicture);

+        return 0;

+    }

+    return pPicture;

+}

+

+#define FixedToDouble(x) ((x)/65536.)

+

+PicturePtr

+CreateRadialGradientPicture (Picture pid, xPointFixed *inner, xPointFixed *outer,

+                             xFixed innerRadius, xFixed outerRadius,

+                             int nStops, xFixed *stops, xRenderColor *colors, int *error)

+{

+    PicturePtr pPicture;

+    PictRadialGradient *radial;

+

+    if (nStops < 2) {

+        *error = BadValue;

+        return 0;

+    }

+

+    pPicture = createSourcePicture();

+    if (!pPicture) {

+        *error = BadAlloc;

+        return 0;

+    }

+

+    pPicture->id = pid;

+    pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictRadialGradient));

+    if (!pPicture->pSourcePict) {

+        *error = BadAlloc;

+        xfree(pPicture);

+        return 0;

+    }

+    radial = &pPicture->pSourcePict->radial;

+

+    radial->type = SourcePictTypeRadial;

+    radial->c1.x = inner->x;

+    radial->c1.y = inner->y;

+    radial->c1.radius = innerRadius;

+    radial->c2.x = outer->x;

+    radial->c2.y = outer->y;

+    radial->c2.radius = outerRadius;

+    radial->cdx = (radial->c2.x - radial->c1.x) / 65536.;

+    radial->cdy = (radial->c2.y - radial->c1.y) / 65536.;

+    radial->dr = (radial->c2.radius - radial->c1.radius) / 65536.;

+    radial->A = (  radial->cdx * radial->cdx

+		   + radial->cdy * radial->cdy

+		   - radial->dr  * radial->dr);

+    

+    initGradient(pPicture->pSourcePict, nStops, stops, colors, error);

+    if (*error) {

+        xfree(pPicture);

+        return 0;

+    }

+    return pPicture;

+}

+

+PicturePtr

+CreateConicalGradientPicture (Picture pid, xPointFixed *center, xFixed angle,

+                              int nStops, xFixed *stops, xRenderColor *colors, int *error)

+{

+    PicturePtr pPicture;

+

+    if (nStops < 2) {

+        *error = BadValue;

+        return 0;

+    }

+

+    pPicture = createSourcePicture();

+    if (!pPicture) {

+        *error = BadAlloc;

+        return 0;

+    }

+

+    pPicture->id = pid;

+    pPicture->pSourcePict = (SourcePictPtr) xalloc(sizeof(PictConicalGradient));

+    if (!pPicture->pSourcePict) {

+        *error = BadAlloc;

+        xfree(pPicture);

+        return 0;

+    }

+

+    pPicture->pSourcePict->conical.type = SourcePictTypeConical;

+    pPicture->pSourcePict->conical.center = *center;

+    pPicture->pSourcePict->conical.angle = angle;

+

+    initGradient(pPicture->pSourcePict, nStops, stops, colors, error);

+    if (*error) {

+        xfree(pPicture);

+        return 0;

+    }

+    return pPicture;

+}

+

+#define NEXT_VAL(_type) (vlist ? (_type) *vlist++ : (_type) ulist++->val)

+

+#define NEXT_PTR(_type) ((_type) ulist++->ptr)

+

+int

+ChangePicture (PicturePtr	pPicture,

+	       Mask		vmask,

+	       XID		*vlist,

+	       DevUnion		*ulist,

+	       ClientPtr	client)

+{

+    ScreenPtr pScreen = pPicture->pDrawable ? pPicture->pDrawable->pScreen : 0;

+    PictureScreenPtr ps = pScreen ? GetPictureScreen(pScreen) : 0;

+    BITS32		index2;

+    int			error = 0;

+    BITS32		maskQ;

+    

+    pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;

+    maskQ = vmask;

+    while (vmask && !error)

+    {

+	index2 = (BITS32) lowbit (vmask);

+	vmask &= ~index2;

+	pPicture->stateChanges |= index2;

+	switch (index2)

+	{

+	case CPRepeat:

+	    {

+		unsigned int	newr;

+		newr = NEXT_VAL(unsigned int);

+		if (newr <= RepeatReflect)

+		{

+		    pPicture->repeat = (newr != RepeatNone);

+		    pPicture->repeatType = newr;

+		}

+		else

+		{

+		    client->errorValue = newr;

+		    error = BadValue;

+		}

+	    }

+	    break;

+	case CPAlphaMap:

+	    {

+		PicturePtr  pAlpha;

+		

+		if (vlist)

+		{

+		    Picture	pid = NEXT_VAL(Picture);

+

+		    if (pid == None)

+			pAlpha = 0;

+		    else

+		    {

+			error = dixLookupResourceByType((pointer *)&pAlpha, pid,

+						  PictureType, client,

+						  DixReadAccess);

+			if (error != Success)

+			{

+			    client->errorValue = pid;

+			    error = (error == BadValue) ? RenderErrBase + BadPicture : error;

+			    break;

+			}

+			if (pAlpha->pDrawable == NULL ||

+			    pAlpha->pDrawable->type != DRAWABLE_PIXMAP)

+			{

+			    client->errorValue = pid;

+			    error = BadMatch;

+			    break;

+			}

+		    }

+		}

+		else

+		    pAlpha = NEXT_PTR(PicturePtr);

+		if (!error)

+		{

+		    if (pAlpha && pAlpha->pDrawable->type == DRAWABLE_PIXMAP)

+			pAlpha->refcnt++;

+		    if (pPicture->alphaMap)

+			FreePicture ((pointer) pPicture->alphaMap, (XID) 0);

+		    pPicture->alphaMap = pAlpha;

+		}

+	    }

+	    break;

+	case CPAlphaXOrigin:

+	    pPicture->alphaOrigin.x = NEXT_VAL(INT16);

+	    break;

+	case CPAlphaYOrigin:

+	    pPicture->alphaOrigin.y = NEXT_VAL(INT16);

+	    break;

+	case CPClipXOrigin:

+	    pPicture->clipOrigin.x = NEXT_VAL(INT16);

+	    break;

+	case CPClipYOrigin:

+	    pPicture->clipOrigin.y = NEXT_VAL(INT16);

+	    break;

+	case CPClipMask:

+	    {

+		Pixmap	    pid;

+		PixmapPtr   pPixmap;

+		int	    clipType;

+                if (!pScreen)

+                    return BadDrawable;

+

+		if (vlist)

+		{

+		    pid = NEXT_VAL(Pixmap);

+		    if (pid == None)

+		    {

+			clipType = CT_NONE;

+			pPixmap = NullPixmap;

+		    }

+		    else

+		    {

+			clipType = CT_PIXMAP;

+			error = dixLookupResourceByType((pointer *)&pPixmap, pid,

+						  RT_PIXMAP, client,

+						  DixReadAccess);

+			if (error != Success)

+			{

+			    client->errorValue = pid;

+			    error = (error == BadValue) ? BadPixmap : error;

+			    break;

+			}

+		    }

+		}

+		else

+		{

+		    pPixmap = NEXT_PTR(PixmapPtr);

+		    if (pPixmap)

+			clipType = CT_PIXMAP;

+		    else

+			clipType = CT_NONE;

+		}

+

+		if (pPixmap)

+		{

+		    if ((pPixmap->drawable.depth != 1) ||

+			(pPixmap->drawable.pScreen != pScreen))

+		    {

+			error = BadMatch;

+			break;

+		    }

+		    else

+		    {

+			clipType = CT_PIXMAP;

+			pPixmap->refcnt++;

+		    }

+		}

+		error = (*ps->ChangePictureClip)(pPicture, clipType,

+						 (pointer)pPixmap, 0);

+		break;

+	    }

+	case CPGraphicsExposure:

+	    {

+		unsigned int	newe;

+		newe = NEXT_VAL(unsigned int);

+		if (newe <= xTrue)

+		    pPicture->graphicsExposures = newe;

+		else

+		{

+		    client->errorValue = newe;

+		    error = BadValue;

+		}

+	    }

+	    break;

+	case CPSubwindowMode:

+	    {

+		unsigned int	news;

+		news = NEXT_VAL(unsigned int);

+		if (news == ClipByChildren || news == IncludeInferiors)

+		    pPicture->subWindowMode = news;

+		else

+		{

+		    client->errorValue = news;

+		    error = BadValue;

+		}

+	    }

+	    break;

+	case CPPolyEdge:

+	    {

+		unsigned int	newe;

+		newe = NEXT_VAL(unsigned int);

+		if (newe == PolyEdgeSharp || newe == PolyEdgeSmooth)

+		    pPicture->polyEdge = newe;

+		else

+		{

+		    client->errorValue = newe;

+		    error = BadValue;

+		}

+	    }

+	    break;

+	case CPPolyMode:

+	    {

+		unsigned int	newm;

+		newm = NEXT_VAL(unsigned int);

+		if (newm == PolyModePrecise || newm == PolyModeImprecise)

+		    pPicture->polyMode = newm;

+		else

+		{

+		    client->errorValue = newm;

+		    error = BadValue;

+		}

+	    }

+	    break;

+	case CPDither:

+	    pPicture->dither = NEXT_VAL(Atom);

+	    break;

+	case CPComponentAlpha:

+	    {

+		unsigned int	newca;

+

+		newca = NEXT_VAL (unsigned int);

+		if (newca <= xTrue)

+		    pPicture->componentAlpha = newca;

+		else

+		{

+		    client->errorValue = newca;

+		    error = BadValue;

+		}

+	    }

+	    break;

+	default:

+	    client->errorValue = maskQ;

+	    error = BadValue;

+	    break;

+	}

+    }

+    if (ps)

+        (*ps->ChangePicture) (pPicture, maskQ);

+    return error;

+}

+

+int

+SetPictureClipRects (PicturePtr	pPicture,

+		     int	xOrigin,

+		     int	yOrigin,

+		     int	nRect,

+		     xRectangle	*rects)

+{

+    ScreenPtr		pScreen = pPicture->pDrawable->pScreen;

+    PictureScreenPtr	ps = GetPictureScreen(pScreen);

+    RegionPtr		clientClip;

+    int			result;

+

+    clientClip = RECTS_TO_REGION(pScreen,

+				 nRect, rects, CT_UNSORTED);

+    if (!clientClip)

+	return BadAlloc;

+    result =(*ps->ChangePictureClip) (pPicture, CT_REGION, 

+				      (pointer) clientClip, 0);

+    if (result == Success)

+    {

+	pPicture->clipOrigin.x = xOrigin;

+	pPicture->clipOrigin.y = yOrigin;

+	pPicture->stateChanges |= CPClipXOrigin|CPClipYOrigin|CPClipMask;

+	pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;

+    }

+    return result;

+}

+

+int

+SetPictureClipRegion (PicturePtr    pPicture,

+                      int           xOrigin,

+                      int           yOrigin,

+                      RegionPtr     pRegion)

+{

+    ScreenPtr           pScreen = pPicture->pDrawable->pScreen;

+    PictureScreenPtr    ps = GetPictureScreen(pScreen);

+    RegionPtr           clientClip;

+    int                 result;

+    int                 type;

+

+    if (pRegion)

+    {

+        type = CT_REGION;

+        clientClip = REGION_CREATE (pScreen,

+                                    REGION_EXTENTS(pScreen, pRegion),

+                                    REGION_NUM_RECTS(pRegion));

+        if (!clientClip)

+            return BadAlloc;

+        if (!REGION_COPY (pSCreen, clientClip, pRegion))

+        {

+            REGION_DESTROY (pScreen, clientClip);

+            return BadAlloc;

+        }

+    }

+    else

+    {

+        type = CT_NONE;

+        clientClip = 0;

+    }

+

+    result =(*ps->ChangePictureClip) (pPicture, type,

+                                      (pointer) clientClip, 0);

+    if (result == Success)

+    {

+        pPicture->clipOrigin.x = xOrigin;

+        pPicture->clipOrigin.y = yOrigin;

+        pPicture->stateChanges |= CPClipXOrigin|CPClipYOrigin|CPClipMask;

+        pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;

+    }

+    return result;

+}

+

+static Bool

+transformIsIdentity(PictTransform *t)

+{

+    return ((t->matrix[0][0] == t->matrix[1][1]) &&

+            (t->matrix[0][0] == t->matrix[2][2]) &&

+            (t->matrix[0][0] != 0) &&

+            (t->matrix[0][1] == 0) &&

+            (t->matrix[0][2] == 0) &&

+            (t->matrix[1][0] == 0) &&

+            (t->matrix[1][2] == 0) &&

+            (t->matrix[2][0] == 0) &&

+            (t->matrix[2][1] == 0));

+}

+

+int

+SetPictureTransform (PicturePtr	    pPicture,

+		     PictTransform  *transform)

+{

+    if (transform && transformIsIdentity (transform))

+	transform = 0;

+    

+    if (transform)

+    {

+	if (!pPicture->transform)

+	{

+	    pPicture->transform = (PictTransform *) xalloc (sizeof (PictTransform));

+	    if (!pPicture->transform)

+		return BadAlloc;

+	}

+	*pPicture->transform = *transform;

+    }

+    else

+    {

+	if (pPicture->transform)

+	{

+	    xfree (pPicture->transform);

+	    pPicture->transform = 0;

+	}

+    }

+    pPicture->serialNumber |= GC_CHANGE_SERIAL_BIT;

+

+    if (pPicture->pDrawable != NULL) {

+	int result;

+	PictureScreenPtr ps = GetPictureScreen(pPicture->pDrawable->pScreen);

+

+	result = (*ps->ChangePictureTransform) (pPicture, transform);

+

+	return result;

+    }

+

+    return Success;

+}

+

+void

+CopyPicture (PicturePtr	pSrc,

+	     Mask	mask,

+	     PicturePtr	pDst)

+{

+    PictureScreenPtr ps = GetPictureScreen(pSrc->pDrawable->pScreen);

+    Mask origMask = mask;

+

+    pDst->serialNumber |= GC_CHANGE_SERIAL_BIT;

+    pDst->stateChanges |= mask;

+

+    while (mask) {

+	Mask bit = lowbit(mask);

+

+	switch (bit)

+	{

+	case CPRepeat:

+	    pDst->repeat = pSrc->repeat;

+	    pDst->repeatType = pSrc->repeatType;

+	    break;

+	case CPAlphaMap:

+	    if (pSrc->alphaMap && pSrc->alphaMap->pDrawable->type == DRAWABLE_PIXMAP)

+		pSrc->alphaMap->refcnt++;

+	    if (pDst->alphaMap)

+		FreePicture ((pointer) pDst->alphaMap, (XID) 0);

+	    pDst->alphaMap = pSrc->alphaMap;

+	    break;

+	case CPAlphaXOrigin:

+	    pDst->alphaOrigin.x = pSrc->alphaOrigin.x;

+	    break;

+	case CPAlphaYOrigin:

+	    pDst->alphaOrigin.y = pSrc->alphaOrigin.y;

+	    break;

+	case CPClipXOrigin:

+	    pDst->clipOrigin.x = pSrc->clipOrigin.x;

+	    break;

+	case CPClipYOrigin:

+	    pDst->clipOrigin.y = pSrc->clipOrigin.y;

+	    break;

+	case CPClipMask:

+	    switch (pSrc->clientClipType) {

+	    case CT_NONE:

+		(*ps->ChangePictureClip)(pDst, CT_NONE, NULL, 0);

+		break;

+	    case CT_REGION:

+		if (!pSrc->clientClip) {

+		    (*ps->ChangePictureClip)(pDst, CT_NONE, NULL, 0);

+		} else {

+		    RegionPtr clientClip;

+		    RegionPtr srcClientClip = (RegionPtr)pSrc->clientClip;

+

+		    clientClip = REGION_CREATE(pSrc->pDrawable->pScreen,

+			REGION_EXTENTS(pSrc->pDrawable->pScreen, srcClientClip),

+			REGION_NUM_RECTS(srcClientClip));

+		    (*ps->ChangePictureClip)(pDst, CT_REGION, clientClip, 0);

+		}

+		break;

+	    default:

+		/* XXX: CT_PIXMAP unimplemented */

+		break;

+	    }

+	    break;

+	case CPGraphicsExposure:

+	    pDst->graphicsExposures = pSrc->graphicsExposures;

+	    break;

+	case CPPolyEdge:

+	    pDst->polyEdge = pSrc->polyEdge;

+	    break;

+	case CPPolyMode:

+	    pDst->polyMode = pSrc->polyMode;

+	    break;

+	case CPDither:

+	    pDst->dither = pSrc->dither;

+	    break;

+	case CPComponentAlpha:

+	    pDst->componentAlpha = pSrc->componentAlpha;

+	    break;

+	}

+	mask &= ~bit;

+    }

+

+    (*ps->ChangePicture)(pDst, origMask);

+}

+

+static void

+ValidateOnePicture (PicturePtr pPicture)

+{

+    if (pPicture->pDrawable && pPicture->serialNumber != pPicture->pDrawable->serialNumber)

+    {

+	PictureScreenPtr    ps = GetPictureScreen(pPicture->pDrawable->pScreen);

+

+	(*ps->ValidatePicture) (pPicture, pPicture->stateChanges);

+	pPicture->stateChanges = 0;

+	pPicture->serialNumber = pPicture->pDrawable->serialNumber;

+    }

+}

+

+void

+ValidatePicture(PicturePtr pPicture)

+{

+    ValidateOnePicture (pPicture);

+    if (pPicture->alphaMap)

+	ValidateOnePicture (pPicture->alphaMap);

+}

+

+int

+FreePicture (pointer	value,

+	     XID	pid)

+{

+    PicturePtr	pPicture = (PicturePtr) value;

+

+    if (--pPicture->refcnt == 0)

+    {

+	if (pPicture->transform)

+	    xfree (pPicture->transform);

+

+	if (pPicture->pSourcePict)

+	{

+	    if (pPicture->pSourcePict->type != SourcePictTypeSolidFill)

+		xfree(pPicture->pSourcePict->linear.stops);

+

+	    xfree(pPicture->pSourcePict);

+	}

+

+	if (pPicture->pDrawable)

+	{

+            ScreenPtr	    pScreen = pPicture->pDrawable->pScreen;

+            PictureScreenPtr    ps = GetPictureScreen(pScreen);

+	

+            if (pPicture->alphaMap)

+                FreePicture ((pointer) pPicture->alphaMap, (XID) 0);

+            (*ps->DestroyPicture) (pPicture);

+            (*ps->DestroyPictureClip) (pPicture);

+            if (pPicture->pDrawable->type == DRAWABLE_WINDOW)

+            {

+                WindowPtr	pWindow = (WindowPtr) pPicture->pDrawable;

+                PicturePtr	*pPrev;

+

+                for (pPrev = (PicturePtr *)dixLookupPrivateAddr

+			 (&pWindow->devPrivates, PictureWindowPrivateKey);

+                     *pPrev;

+                     pPrev = &(*pPrev)->pNext)

+                {

+                    if (*pPrev == pPicture)

+                    {

+                        *pPrev = pPicture->pNext;

+                        break;

+                    }

+                }

+            }

+            else if (pPicture->pDrawable->type == DRAWABLE_PIXMAP)

+            {

+                (*pScreen->DestroyPixmap) ((PixmapPtr)pPicture->pDrawable);

+            }

+        }

+	dixFreePrivates(pPicture->devPrivates);

+	xfree (pPicture);

+    }

+    return Success;

+}

+

+int

+FreePictFormat (pointer	pPictFormat,

+		XID     pid)

+{

+    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,

+		   INT16 xSrc, INT16 ySrc, CARD16 width, CARD16 height)

+{

+    Bool no_src_alpha, no_dst_alpha;

+

+    /* Sampling off the edge of a RepeatNone picture introduces alpha

+     * even if the picture itself doesn't have alpha. We don't try to

+     * detect every case where we don't sample off the edge, just the

+     * simplest case where there is no transform on the source

+     * picture.

+     */

+    no_src_alpha = PICT_FORMAT_COLOR(pSrc->format) &&

+                   PICT_FORMAT_A(pSrc->format) == 0 &&

+                   (pSrc->repeatType != RepeatNone ||

+		    (!pSrc->transform &&

+		     xSrc >= 0 && ySrc >= 0 &&

+		     xSrc + width <= pSrc->pDrawable->width &&

+		     ySrc + height <= pSrc->pDrawable->height)) &&

+                   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,

+		  PicturePtr	pMask,

+		  PicturePtr	pDst,

+		  INT16		xSrc,

+		  INT16		ySrc,

+		  INT16		xMask,

+		  INT16		yMask,

+		  INT16		xDst,

+		  INT16		yDst,

+		  CARD16	width,

+		  CARD16	height)

+{

+    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);

+    

+    ValidatePicture (pSrc);

+    if (pMask)

+	ValidatePicture (pMask);

+    ValidatePicture (pDst);

+

+    op = ReduceCompositeOp (op, pSrc, pMask, pDst, xSrc, ySrc, width, height);

+    if (op == PictOpDst)

+	return;

+

+    (*ps->Composite) (op,

+		       pSrc,

+		       pMask,

+		       pDst,

+		       xSrc,

+		       ySrc,

+		       xMask,

+		       yMask,

+		       xDst,

+		       yDst,

+		       width,

+		       height);

+}

+

+void

+CompositeRects (CARD8		op,

+		PicturePtr	pDst,

+		xRenderColor	*color,

+		int		nRect,

+		xRectangle      *rects)

+{

+    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);

+    

+    ValidatePicture (pDst);

+    (*ps->CompositeRects) (op, pDst, color, nRect, rects);

+}

+

+void

+CompositeTrapezoids (CARD8	    op,

+		     PicturePtr	    pSrc,

+		     PicturePtr	    pDst,

+		     PictFormatPtr  maskFormat,

+		     INT16	    xSrc,

+		     INT16	    ySrc,

+		     int	    ntrap,

+		     xTrapezoid	    *traps)

+{

+    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);

+    

+    ValidatePicture (pSrc);

+    ValidatePicture (pDst);

+    (*ps->Trapezoids) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntrap, traps);

+}

+

+void

+CompositeTriangles (CARD8	    op,

+		    PicturePtr	    pSrc,

+		    PicturePtr	    pDst,

+		    PictFormatPtr   maskFormat,

+		    INT16	    xSrc,

+		    INT16	    ySrc,

+		    int		    ntriangles,

+		    xTriangle	    *triangles)

+{

+    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);

+    

+    ValidatePicture (pSrc);

+    ValidatePicture (pDst);

+    (*ps->Triangles) (op, pSrc, pDst, maskFormat, xSrc, ySrc, ntriangles, triangles);

+}

+

+void

+CompositeTriStrip (CARD8	    op,

+		   PicturePtr	    pSrc,

+		   PicturePtr	    pDst,

+		   PictFormatPtr    maskFormat,

+		   INT16	    xSrc,

+		   INT16	    ySrc,

+		   int		    npoints,

+		   xPointFixed	    *points)

+{

+    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);

+    

+    ValidatePicture (pSrc);

+    ValidatePicture (pDst);

+    (*ps->TriStrip) (op, pSrc, pDst, maskFormat, xSrc, ySrc, npoints, points);

+}

+

+void

+CompositeTriFan (CARD8		op,

+		 PicturePtr	pSrc,

+		 PicturePtr	pDst,

+		 PictFormatPtr	maskFormat,

+		 INT16		xSrc,

+		 INT16		ySrc,

+		 int		npoints,

+		 xPointFixed	*points)

+{

+    PictureScreenPtr	ps = GetPictureScreen(pDst->pDrawable->pScreen);

+    

+    ValidatePicture (pSrc);

+    ValidatePicture (pDst);

+    (*ps->TriFan) (op, pSrc, pDst, maskFormat, xSrc, ySrc, npoints, points);

+}

+

+void

+AddTraps (PicturePtr	pPicture,

+	  INT16		xOff,

+	  INT16		yOff,

+	  int		ntrap,

+	  xTrap		*traps)

+{

+    PictureScreenPtr	ps = GetPictureScreen(pPicture->pDrawable->pScreen);

+    

+    ValidatePicture (pPicture);

+    (*ps->AddTraps) (pPicture, xOff, yOff, ntrap, traps);

+}

+