libxtrans libX11 libX11 libXext mesa xserver git update 22 sep 2011

1 files changed, 606 insertions, 610 deletions

diff --git a/xorg-server/render/mipict.c b/xorg-server/render/mipict.c
index 1623b335f..9a44c2729 100644
--- a/xorg-server/render/mipict.c
+++ b/xorg-server/render/mipict.c
@@ -1,610 +1,606 @@
-/*

- *

- * Copyright © 1999 Keith Packard

- *

- * Permission to use, copy, modify, distribute, and sell this software and its

- * documentation for any purpose is hereby granted without fee, provided that

- * the above copyright notice appear in all copies and that both that

- * copyright notice and this permission notice appear in supporting

- * documentation, and that the name of Keith Packard not be used in

- * advertising or publicity pertaining to distribution of the software without

- * specific, written prior permission.  Keith Packard makes no

- * representations about the suitability of this software for any purpose.  It

- * is provided "as is" without express or implied warranty.

- *

- * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

- * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR

- * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,

- * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER

- * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR

- * PERFORMANCE OF THIS SOFTWARE.

- */

-

-#ifdef HAVE_DIX_CONFIG_H

-#include <dix-config.h>

-#endif

-

-#include "scrnintstr.h"

-#include "gcstruct.h"

-#include "pixmapstr.h"

-#include "windowstr.h"

-#include "mi.h"

-#include "picturestr.h"

-#include "mipict.h"

-

-#ifndef __GNUC__

-#define __inline

-#endif

-

-int

-miCreatePicture (PicturePtr pPicture)

-{

-    return Success;

-}

-

-void

-miDestroyPicture (PicturePtr pPicture)

-{

-    if (pPicture->freeCompClip)

-	RegionDestroy(pPicture->pCompositeClip);

-}

-

-void

-miDestroyPictureClip (PicturePtr pPicture)

-{

-    switch (pPicture->clientClipType) {

-    case CT_NONE:

-	return;

-    case CT_PIXMAP:

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

-	break;

-    default:

-	/*

-	 * we know we'll never have a list of rectangles, since ChangeClip

-	 * immediately turns them into a region

-	 */

-	RegionDestroy(pPicture->clientClip);

-	break;

-    }

-    pPicture->clientClip = NULL;

-    pPicture->clientClipType = CT_NONE;

-}    

-

-int

-miChangePictureClip (PicturePtr    pPicture,

-		     int	   type,

-		     pointer	   value,

-		     int	   n)

-{

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

-    PictureScreenPtr    ps = GetPictureScreen(pScreen);

-    pointer		clientClip;

-    int			clientClipType;

-    

-    switch (type) {

-    case CT_PIXMAP:

-	/* convert the pixmap to a region */

-	clientClip = (pointer) BitmapToRegion(pScreen, (PixmapPtr) value);

-	if (!clientClip)

-	    return BadAlloc;

-	clientClipType = CT_REGION;

-	(*pScreen->DestroyPixmap) ((PixmapPtr) value);

-	break;

-    case CT_REGION:

-	clientClip = value;

-	clientClipType = CT_REGION;

-	break;

-    case CT_NONE:

-	clientClip = 0;

-	clientClipType = CT_NONE;

-	break;

-    default:

-	clientClip = (pointer) RegionFromRects(n,

-					       (xRectangle *) value,

-					       type);

-	if (!clientClip)

-	    return BadAlloc;

-	clientClipType = CT_REGION;

-	free(value);

-	break;

-    }

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

-    pPicture->clientClip = clientClip;

-    pPicture->clientClipType = clientClipType;

-    pPicture->stateChanges |= CPClipMask;

-    return Success;

-}

-

-void

-miChangePicture (PicturePtr pPicture,

-		 Mask       mask)

-{

-    return;

-}

-

-void

-miValidatePicture (PicturePtr pPicture,

-		   Mask       mask)

-{

-    DrawablePtr	    pDrawable = pPicture->pDrawable;

-

-    if ((mask & (CPClipXOrigin|CPClipYOrigin|CPClipMask|CPSubwindowMode)) ||

-	(pDrawable->serialNumber != (pPicture->serialNumber & DRAWABLE_SERIAL_BITS)))

-    {

-	if (pDrawable->type == DRAWABLE_WINDOW)

-	{

-	    WindowPtr       pWin = (WindowPtr) pDrawable;

-	    RegionPtr       pregWin;

-	    Bool            freeTmpClip, freeCompClip;

-

-	    if (pPicture->subWindowMode == IncludeInferiors)

-	    {

-		pregWin = NotClippedByChildren(pWin);

-		freeTmpClip = TRUE;

-	    }

-	    else

-	    {

-		pregWin = &pWin->clipList;

-		freeTmpClip = FALSE;

-	    }

-	    freeCompClip = pPicture->freeCompClip;

-

-	    /*

-	     * if there is no client clip, we can get by with just keeping the

-	     * pointer we got, and remembering whether or not should destroy

-	     * (or maybe re-use) it later.  this way, we avoid unnecessary

-	     * copying of regions.  (this wins especially if many clients clip

-	     * by children and have no client clip.)

-	     */

-	    if (pPicture->clientClipType == CT_NONE)

-	    {

-		if (freeCompClip)

-		    RegionDestroy(pPicture->pCompositeClip);

-		pPicture->pCompositeClip = pregWin;

-		pPicture->freeCompClip = freeTmpClip;

-	    }

-	    else

-	    {

-		/*

-		 * we need one 'real' region to put into the composite clip. if

-		 * pregWin the current composite clip are real, we can get rid of

-		 * one. if pregWin is real and the current composite clip isn't,

-		 * use pregWin for the composite clip. if the current composite

-		 * clip is real and pregWin isn't, use the current composite

-		 * clip. if neither is real, create a new region.

-		 */

-

-		RegionTranslate(pPicture->clientClip,

-				 pDrawable->x + pPicture->clipOrigin.x,

-				 pDrawable->y + pPicture->clipOrigin.y);

-

-		if (freeCompClip)

-		{

-		    RegionIntersect(pPicture->pCompositeClip,

-				     pregWin, pPicture->clientClip);

-		    if (freeTmpClip)

-			RegionDestroy(pregWin);

-		}

-		else if (freeTmpClip)

-		{

-		    RegionIntersect(pregWin, pregWin, pPicture->clientClip);

-		    pPicture->pCompositeClip = pregWin;

-		}

-		else

-		{

-		    pPicture->pCompositeClip = RegionCreate(NullBox, 0);

-		    RegionIntersect(pPicture->pCompositeClip,

-				     pregWin, pPicture->clientClip);

-		}

-		pPicture->freeCompClip = TRUE;

-		RegionTranslate(pPicture->clientClip,

-				 -(pDrawable->x + pPicture->clipOrigin.x),

-				 -(pDrawable->y + pPicture->clipOrigin.y));

-	    }

-	}	/* end of composite clip for a window */

-	else

-	{

-	    BoxRec          pixbounds;

-

-	    /* XXX should we translate by drawable.x/y here ? */

-	    /* If you want pixmaps in offscreen memory, yes */

-	    pixbounds.x1 = pDrawable->x;

-	    pixbounds.y1 = pDrawable->y;

-	    pixbounds.x2 = pDrawable->x + pDrawable->width;

-	    pixbounds.y2 = pDrawable->y + pDrawable->height;

-

-	    if (pPicture->freeCompClip)

-	    {

-		RegionReset(pPicture->pCompositeClip, &pixbounds);

-	    }

-	    else

-	    {

-		pPicture->freeCompClip = TRUE;

-		pPicture->pCompositeClip = RegionCreate(&pixbounds, 1);

-	    }

-

-	    if (pPicture->clientClipType == CT_REGION)

-	    {

-		if(pDrawable->x || pDrawable->y) {

-		    RegionTranslate(pPicture->clientClip,

-				     pDrawable->x + pPicture->clipOrigin.x, 

-				     pDrawable->y + pPicture->clipOrigin.y);

-		    RegionIntersect(pPicture->pCompositeClip,

-				     pPicture->pCompositeClip, pPicture->clientClip);

-		    RegionTranslate(pPicture->clientClip,

-				     -(pDrawable->x + pPicture->clipOrigin.x), 

-				     -(pDrawable->y + pPicture->clipOrigin.y));

-		} else {

-		    RegionTranslate(pPicture->pCompositeClip,

-				     -pPicture->clipOrigin.x, -pPicture->clipOrigin.y);

-		    RegionIntersect(pPicture->pCompositeClip,

-				     pPicture->pCompositeClip, pPicture->clientClip);

-		    RegionTranslate(pPicture->pCompositeClip,

-				     pPicture->clipOrigin.x, pPicture->clipOrigin.y);

-		}

-	    }

-	}	/* end of composite clip for pixmap */

-    }

-}

-

-int

-miChangePictureTransform (PicturePtr	pPicture,

-			  PictTransform *transform)

-{

-    return Success;

-}

-

-int

-miChangePictureFilter (PicturePtr pPicture,

-		       int	  filter,

-		       xFixed     *params,

-		       int	  nparams)

-{

-    return Success;

-}

-

-#define BOUND(v)	(INT16) ((v) < MINSHORT ? MINSHORT : (v) > MAXSHORT ? MAXSHORT : (v))

-

-static inline pixman_bool_t

-miClipPictureReg (pixman_region16_t *	pRegion,

-		  pixman_region16_t *	pClip,

-		  int		dx,

-		  int		dy)

-{

-    if (pixman_region_n_rects(pRegion) == 1 &&

-	pixman_region_n_rects(pClip) == 1)

-    {

-	pixman_box16_t *  pRbox = pixman_region_rectangles(pRegion, NULL);

-	pixman_box16_t *  pCbox = pixman_region_rectangles(pClip, NULL);

-	int	v;

-	

-	if (pRbox->x1 < (v = pCbox->x1 + dx))

-	    pRbox->x1 = BOUND(v);

-	if (pRbox->x2 > (v = pCbox->x2 + dx))

-	    pRbox->x2 = BOUND(v);

-	if (pRbox->y1 < (v = pCbox->y1 + dy))

-	    pRbox->y1 = BOUND(v);

-	if (pRbox->y2 > (v = pCbox->y2 + dy))

-	    pRbox->y2 = BOUND(v);

-	if (pRbox->x1 >= pRbox->x2 ||

-	    pRbox->y1 >= pRbox->y2)

-	{

-	    pixman_region_init (pRegion);

-	}

-    }

-    else if (!pixman_region_not_empty (pClip))

-	return FALSE;

-    else

-    {

-	if (dx || dy)

-	    pixman_region_translate (pRegion, -dx, -dy);

-	if (!pixman_region_intersect (pRegion, pRegion, pClip))

-	    return FALSE;

-	if (dx || dy)

-	    pixman_region_translate(pRegion, dx, dy);

-    }

-    return pixman_region_not_empty(pRegion);

-}

-

-static __inline Bool

-miClipPictureSrc (RegionPtr	pRegion,

-		  PicturePtr	pPicture,

-		  int		dx,

-		  int		dy)

-{

-    if (pPicture->clientClipType != CT_NONE)

-    {

-	Bool result;

-	

-	pixman_region_translate ( pPicture->clientClip,

-				  pPicture->clipOrigin.x + dx,

-				  pPicture->clipOrigin.y + dy);

-

-	result = RegionIntersect(pRegion, pRegion, pPicture->clientClip);

-	

-	pixman_region_translate ( pPicture->clientClip,

-				  - (pPicture->clipOrigin.x + dx),

-				  - (pPicture->clipOrigin.y + dy));

-

-	if (!result)

-	    return FALSE;

-    }

-    return TRUE;

-}

-

-static void

-SourceValidateOnePicture (PicturePtr pPicture)

-{

-    DrawablePtr	pDrawable = pPicture->pDrawable;

-    ScreenPtr	pScreen;

-

-    if (!pDrawable)

-        return;

-

-    pScreen = pDrawable->pScreen;

-

-    if (pScreen->SourceValidate)

-    {

-	pScreen->SourceValidate (

-	    pDrawable, 0, 0, pDrawable->width, pDrawable->height, pPicture->subWindowMode);

-    }

-}

-

-void

-miCompositeSourceValidate (PicturePtr pPicture)

-{

-    SourceValidateOnePicture (pPicture);

-    if (pPicture->alphaMap)

-	SourceValidateOnePicture (pPicture->alphaMap);

-}

-

-/*

- * returns FALSE if the final region is empty.  Indistinguishable from

- * an allocation failure, but rendering ignores those anyways.

- */

-

-Bool

-miComputeCompositeRegion (RegionPtr	pRegion,

-			  PicturePtr	pSrc,

-			  PicturePtr	pMask,

-			  PicturePtr	pDst,

-			  INT16		xSrc,

-			  INT16		ySrc,

-			  INT16		xMask,

-			  INT16		yMask,

-			  INT16		xDst,

-			  INT16		yDst,

-			  CARD16	width,

-			  CARD16	height)

-{

-    

-    int		v;

-

-    pRegion->extents.x1 = xDst;

-    v = xDst + width;

-    pRegion->extents.x2 = BOUND(v);

-    pRegion->extents.y1 = yDst;

-    v = yDst + height;

-    pRegion->extents.y2 = BOUND(v);

-    pRegion->data = 0;

-    /* Check for empty operation */

-    if (pRegion->extents.x1 >= pRegion->extents.x2 ||

-	pRegion->extents.y1 >= pRegion->extents.y2)

-    {

-	pixman_region_init (pRegion);

-	return FALSE;

-    }

-    /* clip against dst */

-    if (!miClipPictureReg (pRegion, pDst->pCompositeClip, 0, 0))

-    {

-	pixman_region_fini (pRegion);

-	return FALSE;

-    }

-    if (pDst->alphaMap)

-    {

-	if (!miClipPictureReg (pRegion, pDst->alphaMap->pCompositeClip,

-			       -pDst->alphaOrigin.x,

-			       -pDst->alphaOrigin.y))

-	{

-	    pixman_region_fini (pRegion);

-	    return FALSE;

-	}

-    }

-    /* clip against src */

-    if (!miClipPictureSrc (pRegion, pSrc, xDst - xSrc, yDst - ySrc))

-    {

-	pixman_region_fini (pRegion);

-	return FALSE;

-    }

-    if (pSrc->alphaMap)

-    {

-	if (!miClipPictureSrc (pRegion, pSrc->alphaMap,

-			       xDst - (xSrc - pSrc->alphaOrigin.x),

-			       yDst - (ySrc - pSrc->alphaOrigin.y)))

-	{

-	    pixman_region_fini (pRegion);

-	    return FALSE;

-	}

-    }

-    /* clip against mask */

-    if (pMask)

-    {

-	if (!miClipPictureSrc (pRegion, pMask, xDst - xMask, yDst - yMask))

-	{

-	    pixman_region_fini (pRegion);

-	    return FALSE;

-	}	

-	if (pMask->alphaMap)

-	{

-	    if (!miClipPictureSrc (pRegion, pMask->alphaMap,

-				   xDst - (xMask - pMask->alphaOrigin.x),

-				   yDst - (yMask - pMask->alphaOrigin.y)))

-	    {

-		pixman_region_fini (pRegion);

-		return FALSE;

-	    }

-	}

-    }

-

-    

-    miCompositeSourceValidate (pSrc);

-    if (pMask)

-	miCompositeSourceValidate (pMask);

-

-    return TRUE;

-}

-

-void

-miRenderColorToPixel (PictFormatPtr format,

-		      xRenderColor  *color,

-		      CARD32	    *pixel)

-{

-    CARD32	    r, g, b, a;

-    miIndexedPtr    pIndexed;

-

-    switch (format->type) {

-    case PictTypeDirect:

-	r = color->red >> (16 - Ones (format->direct.redMask));

-	g = color->green >> (16 - Ones (format->direct.greenMask));

-	b = color->blue >> (16 - Ones (format->direct.blueMask));

-	a = color->alpha >> (16 - Ones (format->direct.alphaMask));

-	r = r << format->direct.red;

-	g = g << format->direct.green;

-	b = b << format->direct.blue;

-	a = a << format->direct.alpha;

-	*pixel = r|g|b|a;

-	break;

-    case PictTypeIndexed:

-	pIndexed = (miIndexedPtr) (format->index.devPrivate);

-	if (pIndexed->color)

-	{

-	    r = color->red >> 11;

-	    g = color->green >> 11;

-	    b = color->blue >> 11;

-	    *pixel = miIndexToEnt15 (pIndexed, (r << 10) | (g << 5) | b);

-	}

-	else

-	{

-	    r = color->red >> 8;

-	    g = color->green >> 8;

-	    b = color->blue >> 8;

-	    *pixel = miIndexToEntY24 (pIndexed, (r << 16) | (g << 8) | b);

-	}

-	break;

-    }

-}

-

-static CARD16

-miFillColor (CARD32 pixel, int bits)

-{

-    while (bits < 16)

-    {

-	pixel |= pixel << bits;

-	bits <<= 1;

-    }

-    return (CARD16) pixel;

-}

-

-Bool

-miIsSolidAlpha (PicturePtr pSrc)

-{

-    ScreenPtr	pScreen;

-    char	line[1];

-

-    if (!pSrc->pDrawable)

-        return FALSE;

-

-    pScreen = pSrc->pDrawable->pScreen;

-    

-    /* Alpha-only */

-    if (PICT_FORMAT_TYPE (pSrc->format) != PICT_TYPE_A)

-	return FALSE;

-    /* repeat */

-    if (!pSrc->repeat)

-	return FALSE;

-    /* 1x1 */

-    if (pSrc->pDrawable->width != 1 || pSrc->pDrawable->height != 1)

-	return FALSE;

-    line[0] = 1;

-    (*pScreen->GetImage) (pSrc->pDrawable, 0, 0, 1, 1, ZPixmap, ~0L, line);

-    switch (pSrc->pDrawable->bitsPerPixel) {

-    case 1:

-	return (CARD8) line[0] == 1 || (CARD8) line[0] == 0x80;

-    case 4:

-	return (CARD8) line[0] == 0xf || (CARD8) line[0] == 0xf0;

-    case 8:

-	return (CARD8) line[0] == 0xff;

-    default:

-	return FALSE;

-    }

-}

-

-void

-miRenderPixelToColor (PictFormatPtr format,

-		      CARD32	    pixel,

-		      xRenderColor  *color)

-{

-    CARD32	    r, g, b, a;

-    miIndexedPtr    pIndexed;

-    

-    switch (format->type) {

-    case PictTypeDirect:

-	r = (pixel >> format->direct.red) & format->direct.redMask;

-	g = (pixel >> format->direct.green) & format->direct.greenMask;

-	b = (pixel >> format->direct.blue) & format->direct.blueMask;

-	a = (pixel >> format->direct.alpha) & format->direct.alphaMask;

-	color->red = miFillColor (r, Ones (format->direct.redMask));

-	color->green = miFillColor (g, Ones (format->direct.greenMask));

-	color->blue = miFillColor (b, Ones (format->direct.blueMask));

-	color->alpha = miFillColor (a, Ones (format->direct.alphaMask));

-	break;

-    case PictTypeIndexed:

-	pIndexed = (miIndexedPtr) (format->index.devPrivate);

-	pixel = pIndexed->rgba[pixel & (MI_MAX_INDEXED-1)];

-	r = (pixel >> 16) & 0xff;

-	g = (pixel >>  8) & 0xff;

-	b = (pixel      ) & 0xff;

-	color->red = miFillColor (r, 8);

-	color->green = miFillColor (g, 8);

-	color->blue = miFillColor (b, 8);

-	color->alpha = 0xffff;

-	break;

-    }

-}

-

-Bool

-miPictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)

-{

-    PictureScreenPtr    ps;

-    

-    if (!PictureInit (pScreen, formats, nformats))

-	return FALSE;

-    ps = GetPictureScreen(pScreen);

-    ps->CreatePicture = miCreatePicture;

-    ps->DestroyPicture = miDestroyPicture;

-    ps->ChangePictureClip = miChangePictureClip;

-    ps->DestroyPictureClip = miDestroyPictureClip;

-    ps->ChangePicture = miChangePicture;

-    ps->ValidatePicture = miValidatePicture;

-    ps->InitIndexed = miInitIndexed;

-    ps->CloseIndexed = miCloseIndexed;

-    ps->UpdateIndexed = miUpdateIndexed;

-    ps->ChangePictureTransform = miChangePictureTransform;

-    ps->ChangePictureFilter = miChangePictureFilter;

-    ps->RealizeGlyph = miRealizeGlyph;

-    ps->UnrealizeGlyph = miUnrealizeGlyph;

-

-    /* MI rendering routines */

-    ps->Composite	= 0;			/* requires DDX support */

-    ps->Glyphs		= miGlyphs;

-    ps->CompositeRects	= miCompositeRects;

-    ps->Trapezoids	= 0;

-    ps->Triangles	= 0;

-    

-    ps->RasterizeTrapezoid = 0;			/* requires DDX support */

-    ps->AddTraps	= 0;			/* requires DDX support */

-    ps->AddTriangles	= 0;			/* requires DDX support */

-

-    return TRUE;

-}

+/*
+ *
+ * Copyright © 1999 Keith Packard
+ *
+ * Permission to use, copy, modify, distribute, and sell this software and its
+ * documentation for any purpose is hereby granted without fee, provided that
+ * the above copyright notice appear in all copies and that both that
+ * copyright notice and this permission notice appear in supporting
+ * documentation, and that the name of Keith Packard not be used in
+ * advertising or publicity pertaining to distribution of the software without
+ * specific, written prior permission.  Keith Packard makes no
+ * representations about the suitability of this software for any purpose.  It
+ * is provided "as is" without express or implied warranty.
+ *
+ * KEITH PACKARD DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
+ * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
+ * EVENT SHALL KEITH PACKARD BE LIABLE FOR ANY SPECIAL, INDIRECT OR
+ * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
+ * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
+ * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+ * PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifdef HAVE_DIX_CONFIG_H
+#include <dix-config.h>
+#endif
+
+#include "scrnintstr.h"
+#include "gcstruct.h"
+#include "pixmapstr.h"
+#include "windowstr.h"
+#include "mi.h"
+#include "picturestr.h"
+#include "mipict.h"
+
+int
+miCreatePicture (PicturePtr pPicture)
+{
+    return Success;
+}
+
+void
+miDestroyPicture (PicturePtr pPicture)
+{
+    if (pPicture->freeCompClip)
+	RegionDestroy(pPicture->pCompositeClip);
+}
+
+void
+miDestroyPictureClip (PicturePtr pPicture)
+{
+    switch (pPicture->clientClipType) {
+    case CT_NONE:
+	return;
+    case CT_PIXMAP:
+	(*pPicture->pDrawable->pScreen->DestroyPixmap) ((PixmapPtr) (pPicture->clientClip));
+	break;
+    default:
+	/*
+	 * we know we'll never have a list of rectangles, since ChangeClip
+	 * immediately turns them into a region
+	 */
+	RegionDestroy(pPicture->clientClip);
+	break;
+    }
+    pPicture->clientClip = NULL;
+    pPicture->clientClipType = CT_NONE;
+}    
+
+int
+miChangePictureClip (PicturePtr    pPicture,
+		     int	   type,
+		     pointer	   value,
+		     int	   n)
+{
+    ScreenPtr		pScreen = pPicture->pDrawable->pScreen;
+    PictureScreenPtr    ps = GetPictureScreen(pScreen);
+    pointer		clientClip;
+    int			clientClipType;
+    
+    switch (type) {
+    case CT_PIXMAP:
+	/* convert the pixmap to a region */
+	clientClip = (pointer) BitmapToRegion(pScreen, (PixmapPtr) value);
+	if (!clientClip)
+	    return BadAlloc;
+	clientClipType = CT_REGION;
+	(*pScreen->DestroyPixmap) ((PixmapPtr) value);
+	break;
+    case CT_REGION:
+	clientClip = value;
+	clientClipType = CT_REGION;
+	break;
+    case CT_NONE:
+	clientClip = 0;
+	clientClipType = CT_NONE;
+	break;
+    default:
+	clientClip = (pointer) RegionFromRects(n,
+					       (xRectangle *) value,
+					       type);
+	if (!clientClip)
+	    return BadAlloc;
+	clientClipType = CT_REGION;
+	free(value);
+	break;
+    }
+    (*ps->DestroyPictureClip) (pPicture);
+    pPicture->clientClip = clientClip;
+    pPicture->clientClipType = clientClipType;
+    pPicture->stateChanges |= CPClipMask;
+    return Success;
+}
+
+void
+miChangePicture (PicturePtr pPicture,
+		 Mask       mask)
+{
+    return;
+}
+
+void
+miValidatePicture (PicturePtr pPicture,
+		   Mask       mask)
+{
+    DrawablePtr	    pDrawable = pPicture->pDrawable;
+
+    if ((mask & (CPClipXOrigin|CPClipYOrigin|CPClipMask|CPSubwindowMode)) ||
+	(pDrawable->serialNumber != (pPicture->serialNumber & DRAWABLE_SERIAL_BITS)))
+    {
+	if (pDrawable->type == DRAWABLE_WINDOW)
+	{
+	    WindowPtr       pWin = (WindowPtr) pDrawable;
+	    RegionPtr       pregWin;
+	    Bool            freeTmpClip, freeCompClip;
+
+	    if (pPicture->subWindowMode == IncludeInferiors)
+	    {
+		pregWin = NotClippedByChildren(pWin);
+		freeTmpClip = TRUE;
+	    }
+	    else
+	    {
+		pregWin = &pWin->clipList;
+		freeTmpClip = FALSE;
+	    }
+	    freeCompClip = pPicture->freeCompClip;
+
+	    /*
+	     * if there is no client clip, we can get by with just keeping the
+	     * pointer we got, and remembering whether or not should destroy
+	     * (or maybe re-use) it later.  this way, we avoid unnecessary
+	     * copying of regions.  (this wins especially if many clients clip
+	     * by children and have no client clip.)
+	     */
+	    if (pPicture->clientClipType == CT_NONE)
+	    {
+		if (freeCompClip)
+		    RegionDestroy(pPicture->pCompositeClip);
+		pPicture->pCompositeClip = pregWin;
+		pPicture->freeCompClip = freeTmpClip;
+	    }
+	    else
+	    {
+		/*
+		 * we need one 'real' region to put into the composite clip. if
+		 * pregWin the current composite clip are real, we can get rid of
+		 * one. if pregWin is real and the current composite clip isn't,
+		 * use pregWin for the composite clip. if the current composite
+		 * clip is real and pregWin isn't, use the current composite
+		 * clip. if neither is real, create a new region.
+		 */
+
+		RegionTranslate(pPicture->clientClip,
+				 pDrawable->x + pPicture->clipOrigin.x,
+				 pDrawable->y + pPicture->clipOrigin.y);
+
+		if (freeCompClip)
+		{
+		    RegionIntersect(pPicture->pCompositeClip,
+				     pregWin, pPicture->clientClip);
+		    if (freeTmpClip)
+			RegionDestroy(pregWin);
+		}
+		else if (freeTmpClip)
+		{
+		    RegionIntersect(pregWin, pregWin, pPicture->clientClip);
+		    pPicture->pCompositeClip = pregWin;
+		}
+		else
+		{
+		    pPicture->pCompositeClip = RegionCreate(NullBox, 0);
+		    RegionIntersect(pPicture->pCompositeClip,
+				     pregWin, pPicture->clientClip);
+		}
+		pPicture->freeCompClip = TRUE;
+		RegionTranslate(pPicture->clientClip,
+				 -(pDrawable->x + pPicture->clipOrigin.x),
+				 -(pDrawable->y + pPicture->clipOrigin.y));
+	    }
+	}	/* end of composite clip for a window */
+	else
+	{
+	    BoxRec          pixbounds;
+
+	    /* XXX should we translate by drawable.x/y here ? */
+	    /* If you want pixmaps in offscreen memory, yes */
+	    pixbounds.x1 = pDrawable->x;
+	    pixbounds.y1 = pDrawable->y;
+	    pixbounds.x2 = pDrawable->x + pDrawable->width;
+	    pixbounds.y2 = pDrawable->y + pDrawable->height;
+
+	    if (pPicture->freeCompClip)
+	    {
+		RegionReset(pPicture->pCompositeClip, &pixbounds);
+	    }
+	    else
+	    {
+		pPicture->freeCompClip = TRUE;
+		pPicture->pCompositeClip = RegionCreate(&pixbounds, 1);
+	    }
+
+	    if (pPicture->clientClipType == CT_REGION)
+	    {
+		if(pDrawable->x || pDrawable->y) {
+		    RegionTranslate(pPicture->clientClip,
+				     pDrawable->x + pPicture->clipOrigin.x, 
+				     pDrawable->y + pPicture->clipOrigin.y);
+		    RegionIntersect(pPicture->pCompositeClip,
+				     pPicture->pCompositeClip, pPicture->clientClip);
+		    RegionTranslate(pPicture->clientClip,
+				     -(pDrawable->x + pPicture->clipOrigin.x), 
+				     -(pDrawable->y + pPicture->clipOrigin.y));
+		} else {
+		    RegionTranslate(pPicture->pCompositeClip,
+				     -pPicture->clipOrigin.x, -pPicture->clipOrigin.y);
+		    RegionIntersect(pPicture->pCompositeClip,
+				     pPicture->pCompositeClip, pPicture->clientClip);
+		    RegionTranslate(pPicture->pCompositeClip,
+				     pPicture->clipOrigin.x, pPicture->clipOrigin.y);
+		}
+	    }
+	}	/* end of composite clip for pixmap */
+    }
+}
+
+int
+miChangePictureTransform (PicturePtr	pPicture,
+			  PictTransform *transform)
+{
+    return Success;
+}
+
+int
+miChangePictureFilter (PicturePtr pPicture,
+		       int	  filter,
+		       xFixed     *params,
+		       int	  nparams)
+{
+    return Success;
+}
+
+#define BOUND(v)	(INT16) ((v) < MINSHORT ? MINSHORT : (v) > MAXSHORT ? MAXSHORT : (v))
+
+static inline pixman_bool_t
+miClipPictureReg (pixman_region16_t *	pRegion,
+		  pixman_region16_t *	pClip,
+		  int		dx,
+		  int		dy)
+{
+    if (pixman_region_n_rects(pRegion) == 1 &&
+	pixman_region_n_rects(pClip) == 1)
+    {
+	pixman_box16_t *  pRbox = pixman_region_rectangles(pRegion, NULL);
+	pixman_box16_t *  pCbox = pixman_region_rectangles(pClip, NULL);
+	int	v;
+	
+	if (pRbox->x1 < (v = pCbox->x1 + dx))
+	    pRbox->x1 = BOUND(v);
+	if (pRbox->x2 > (v = pCbox->x2 + dx))
+	    pRbox->x2 = BOUND(v);
+	if (pRbox->y1 < (v = pCbox->y1 + dy))
+	    pRbox->y1 = BOUND(v);
+	if (pRbox->y2 > (v = pCbox->y2 + dy))
+	    pRbox->y2 = BOUND(v);
+	if (pRbox->x1 >= pRbox->x2 ||
+	    pRbox->y1 >= pRbox->y2)
+	{
+	    pixman_region_init (pRegion);
+	}
+    }
+    else if (!pixman_region_not_empty (pClip))
+	return FALSE;
+    else
+    {
+	if (dx || dy)
+	    pixman_region_translate (pRegion, -dx, -dy);
+	if (!pixman_region_intersect (pRegion, pRegion, pClip))
+	    return FALSE;
+	if (dx || dy)
+	    pixman_region_translate(pRegion, dx, dy);
+    }
+    return pixman_region_not_empty(pRegion);
+}
+
+static inline Bool
+miClipPictureSrc (RegionPtr	pRegion,
+		  PicturePtr	pPicture,
+		  int		dx,
+		  int		dy)
+{
+    if (pPicture->clientClipType != CT_NONE)
+    {
+	Bool result;
+	
+	pixman_region_translate ( pPicture->clientClip,
+				  pPicture->clipOrigin.x + dx,
+				  pPicture->clipOrigin.y + dy);
+
+	result = RegionIntersect(pRegion, pRegion, pPicture->clientClip);
+	
+	pixman_region_translate ( pPicture->clientClip,
+				  - (pPicture->clipOrigin.x + dx),
+				  - (pPicture->clipOrigin.y + dy));
+
+	if (!result)
+	    return FALSE;
+    }
+    return TRUE;
+}
+
+static void
+SourceValidateOnePicture (PicturePtr pPicture)
+{
+    DrawablePtr	pDrawable = pPicture->pDrawable;
+    ScreenPtr	pScreen;
+
+    if (!pDrawable)
+        return;
+
+    pScreen = pDrawable->pScreen;
+
+    if (pScreen->SourceValidate)
+    {
+	pScreen->SourceValidate (
+	    pDrawable, 0, 0, pDrawable->width, pDrawable->height, pPicture->subWindowMode);
+    }
+}
+
+void
+miCompositeSourceValidate (PicturePtr pPicture)
+{
+    SourceValidateOnePicture (pPicture);
+    if (pPicture->alphaMap)
+	SourceValidateOnePicture (pPicture->alphaMap);
+}
+
+/*
+ * returns FALSE if the final region is empty.  Indistinguishable from
+ * an allocation failure, but rendering ignores those anyways.
+ */
+
+Bool
+miComputeCompositeRegion (RegionPtr	pRegion,
+			  PicturePtr	pSrc,
+			  PicturePtr	pMask,
+			  PicturePtr	pDst,
+			  INT16		xSrc,
+			  INT16		ySrc,
+			  INT16		xMask,
+			  INT16		yMask,
+			  INT16		xDst,
+			  INT16		yDst,
+			  CARD16	width,
+			  CARD16	height)
+{
+    
+    int		v;
+
+    pRegion->extents.x1 = xDst;
+    v = xDst + width;
+    pRegion->extents.x2 = BOUND(v);
+    pRegion->extents.y1 = yDst;
+    v = yDst + height;
+    pRegion->extents.y2 = BOUND(v);
+    pRegion->data = 0;
+    /* Check for empty operation */
+    if (pRegion->extents.x1 >= pRegion->extents.x2 ||
+	pRegion->extents.y1 >= pRegion->extents.y2)
+    {
+	pixman_region_init (pRegion);
+	return FALSE;
+    }
+    /* clip against dst */
+    if (!miClipPictureReg (pRegion, pDst->pCompositeClip, 0, 0))
+    {
+	pixman_region_fini (pRegion);
+	return FALSE;
+    }
+    if (pDst->alphaMap)
+    {
+	if (!miClipPictureReg (pRegion, pDst->alphaMap->pCompositeClip,
+			       -pDst->alphaOrigin.x,
+			       -pDst->alphaOrigin.y))
+	{
+	    pixman_region_fini (pRegion);
+	    return FALSE;
+	}
+    }
+    /* clip against src */
+    if (!miClipPictureSrc (pRegion, pSrc, xDst - xSrc, yDst - ySrc))
+    {
+	pixman_region_fini (pRegion);
+	return FALSE;
+    }
+    if (pSrc->alphaMap)
+    {
+	if (!miClipPictureSrc (pRegion, pSrc->alphaMap,
+			       xDst - (xSrc - pSrc->alphaOrigin.x),
+			       yDst - (ySrc - pSrc->alphaOrigin.y)))
+	{
+	    pixman_region_fini (pRegion);
+	    return FALSE;
+	}
+    }
+    /* clip against mask */
+    if (pMask)
+    {
+	if (!miClipPictureSrc (pRegion, pMask, xDst - xMask, yDst - yMask))
+	{
+	    pixman_region_fini (pRegion);
+	    return FALSE;
+	}	
+	if (pMask->alphaMap)
+	{
+	    if (!miClipPictureSrc (pRegion, pMask->alphaMap,
+				   xDst - (xMask - pMask->alphaOrigin.x),
+				   yDst - (yMask - pMask->alphaOrigin.y)))
+	    {
+		pixman_region_fini (pRegion);
+		return FALSE;
+	    }
+	}
+    }
+
+    
+    miCompositeSourceValidate (pSrc);
+    if (pMask)
+	miCompositeSourceValidate (pMask);
+
+    return TRUE;
+}
+
+void
+miRenderColorToPixel (PictFormatPtr format,
+		      xRenderColor  *color,
+		      CARD32	    *pixel)
+{
+    CARD32	    r, g, b, a;
+    miIndexedPtr    pIndexed;
+
+    switch (format->type) {
+    case PictTypeDirect:
+	r = color->red >> (16 - Ones (format->direct.redMask));
+	g = color->green >> (16 - Ones (format->direct.greenMask));
+	b = color->blue >> (16 - Ones (format->direct.blueMask));
+	a = color->alpha >> (16 - Ones (format->direct.alphaMask));
+	r = r << format->direct.red;
+	g = g << format->direct.green;
+	b = b << format->direct.blue;
+	a = a << format->direct.alpha;
+	*pixel = r|g|b|a;
+	break;
+    case PictTypeIndexed:
+	pIndexed = (miIndexedPtr) (format->index.devPrivate);
+	if (pIndexed->color)
+	{
+	    r = color->red >> 11;
+	    g = color->green >> 11;
+	    b = color->blue >> 11;
+	    *pixel = miIndexToEnt15 (pIndexed, (r << 10) | (g << 5) | b);
+	}
+	else
+	{
+	    r = color->red >> 8;
+	    g = color->green >> 8;
+	    b = color->blue >> 8;
+	    *pixel = miIndexToEntY24 (pIndexed, (r << 16) | (g << 8) | b);
+	}
+	break;
+    }
+}
+
+static CARD16
+miFillColor (CARD32 pixel, int bits)
+{
+    while (bits < 16)
+    {
+	pixel |= pixel << bits;
+	bits <<= 1;
+    }
+    return (CARD16) pixel;
+}
+
+Bool
+miIsSolidAlpha (PicturePtr pSrc)
+{
+    ScreenPtr	pScreen;
+    char	line[1];
+
+    if (!pSrc->pDrawable)
+        return FALSE;
+
+    pScreen = pSrc->pDrawable->pScreen;
+    
+    /* Alpha-only */
+    if (PICT_FORMAT_TYPE (pSrc->format) != PICT_TYPE_A)
+	return FALSE;
+    /* repeat */
+    if (!pSrc->repeat)
+	return FALSE;
+    /* 1x1 */
+    if (pSrc->pDrawable->width != 1 || pSrc->pDrawable->height != 1)
+	return FALSE;
+    line[0] = 1;
+    (*pScreen->GetImage) (pSrc->pDrawable, 0, 0, 1, 1, ZPixmap, ~0L, line);
+    switch (pSrc->pDrawable->bitsPerPixel) {
+    case 1:
+	return (CARD8) line[0] == 1 || (CARD8) line[0] == 0x80;
+    case 4:
+	return (CARD8) line[0] == 0xf || (CARD8) line[0] == 0xf0;
+    case 8:
+	return (CARD8) line[0] == 0xff;
+    default:
+	return FALSE;
+    }
+}
+
+void
+miRenderPixelToColor (PictFormatPtr format,
+		      CARD32	    pixel,
+		      xRenderColor  *color)
+{
+    CARD32	    r, g, b, a;
+    miIndexedPtr    pIndexed;
+    
+    switch (format->type) {
+    case PictTypeDirect:
+	r = (pixel >> format->direct.red) & format->direct.redMask;
+	g = (pixel >> format->direct.green) & format->direct.greenMask;
+	b = (pixel >> format->direct.blue) & format->direct.blueMask;
+	a = (pixel >> format->direct.alpha) & format->direct.alphaMask;
+	color->red = miFillColor (r, Ones (format->direct.redMask));
+	color->green = miFillColor (g, Ones (format->direct.greenMask));
+	color->blue = miFillColor (b, Ones (format->direct.blueMask));
+	color->alpha = miFillColor (a, Ones (format->direct.alphaMask));
+	break;
+    case PictTypeIndexed:
+	pIndexed = (miIndexedPtr) (format->index.devPrivate);
+	pixel = pIndexed->rgba[pixel & (MI_MAX_INDEXED-1)];
+	r = (pixel >> 16) & 0xff;
+	g = (pixel >>  8) & 0xff;
+	b = (pixel      ) & 0xff;
+	color->red = miFillColor (r, 8);
+	color->green = miFillColor (g, 8);
+	color->blue = miFillColor (b, 8);
+	color->alpha = 0xffff;
+	break;
+    }
+}
+
+Bool
+miPictureInit (ScreenPtr pScreen, PictFormatPtr formats, int nformats)
+{
+    PictureScreenPtr    ps;
+    
+    if (!PictureInit (pScreen, formats, nformats))
+	return FALSE;
+    ps = GetPictureScreen(pScreen);
+    ps->CreatePicture = miCreatePicture;
+    ps->DestroyPicture = miDestroyPicture;
+    ps->ChangePictureClip = miChangePictureClip;
+    ps->DestroyPictureClip = miDestroyPictureClip;
+    ps->ChangePicture = miChangePicture;
+    ps->ValidatePicture = miValidatePicture;
+    ps->InitIndexed = miInitIndexed;
+    ps->CloseIndexed = miCloseIndexed;
+    ps->UpdateIndexed = miUpdateIndexed;
+    ps->ChangePictureTransform = miChangePictureTransform;
+    ps->ChangePictureFilter = miChangePictureFilter;
+    ps->RealizeGlyph = miRealizeGlyph;
+    ps->UnrealizeGlyph = miUnrealizeGlyph;
+
+    /* MI rendering routines */
+    ps->Composite	= 0;			/* requires DDX support */
+    ps->Glyphs		= miGlyphs;
+    ps->CompositeRects	= miCompositeRects;
+    ps->Trapezoids	= 0;
+    ps->Triangles	= 0;
+    
+    ps->RasterizeTrapezoid = 0;			/* requires DDX support */
+    ps->AddTraps	= 0;			/* requires DDX support */
+    ps->AddTriangles	= 0;			/* requires DDX support */
+
+    return TRUE;
+}