xserver git update 15/5/2010

1 files changed, 522 insertions, 522 deletions

diff --git a/xorg-server/miext/cw/cw.c b/xorg-server/miext/cw/cw.c
index 247cb83e1..72a90c699 100644
--- a/xorg-server/miext/cw/cw.c
+++ b/xorg-server/miext/cw/cw.c
@@ -1,522 +1,522 @@
-/*
- * Copyright © 2004 Eric Anholt
- *
- * 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 Eric Anholt not be used in
- * advertising or publicity pertaining to distribution of the software without
- * specific, written prior permission.  Eric Anholt makes no
- * representations about the suitability of this software for any purpose.  It
- * is provided "as is" without express or implied warranty.
- *
- * ERIC ANHOLT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
- * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
- * EVENT SHALL ERIC ANHOLT 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 <string.h>
-
-#include "gcstruct.h"
-#include "windowstr.h"
-#include "cw.h"
-
-#define CW_DEBUG 1
-
-#if CW_DEBUG
-#define CW_ASSERT(x) do {						\
-    if (!(x)) {								\
-	ErrorF("composite wrapper: assertion failed at %s:%d\n", __FUNC__, \
-	    __LINE__);							\
-    }									\
-} while (0)
-#else
-#define CW_ASSERT(x) do {} while (0)
-#endif
-
-static int cwGCKeyIndex;
-DevPrivateKey cwGCKey = &cwGCKeyIndex;
-static int cwScreenKeyIndex;
-DevPrivateKey cwScreenKey = &cwScreenKeyIndex;
-static int cwWindowKeyIndex;
-DevPrivateKey cwWindowKey = &cwWindowKeyIndex;
-static int cwPictureKeyIndex;
-DevPrivateKey cwPictureKey = &cwPictureKeyIndex;
-extern GCOps cwGCOps;
-
-static Bool
-cwCloseScreen (int i, ScreenPtr pScreen);
-
-static void
-cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable);
-static void
-cwChangeGC(GCPtr pGC, unsigned long mask);
-static void
-cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst);
-static void
-cwDestroyGC(GCPtr pGC);
-static void
-cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects);
-static void
-cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc);
-static void
-cwDestroyClip(GCPtr pGC);
-
-GCFuncs cwGCFuncs = {
-    cwValidateGC,
-    cwChangeGC,
-    cwCopyGC,
-    cwDestroyGC,
-    cwChangeClip,
-    cwDestroyClip,
-    cwCopyClip,
-};
-
-/* Find the real drawable to draw to, and provide offsets that will translate
- * window coordinates to backing pixmap coordinates.
- */
-DrawablePtr
-cwGetBackingDrawable(DrawablePtr pDrawable, int *x_off, int *y_off)
-{
-    PixmapPtr	pPixmap;
-    
-    if (pDrawable->type == DRAWABLE_WINDOW && 
-	(pPixmap = getCwPixmap ((WindowPtr) pDrawable)))
-    {
-	*x_off = pDrawable->x - pPixmap->screen_x;
-	*y_off = pDrawable->y - pPixmap->screen_y;
-	return &pPixmap->drawable;
-    } else {
-	*x_off = *y_off = 0;
-	return pDrawable;
-    }
-}
-
-#define FUNC_PROLOGUE(pGC, pPriv) do {					\
-    (pGC)->funcs = (pPriv)->wrapFuncs;					\
-    (pGC)->ops = (pPriv)->wrapOps;					\
-} while (0)
-
-#define FUNC_EPILOGUE(pGC, pPriv) do {					\
-    (pPriv)->wrapFuncs = (pGC)->funcs;					\
-    (pPriv)->wrapOps = (pGC)->ops;					\
-    (pGC)->funcs = &cwGCFuncs;						\
-    (pGC)->ops = &cwGCOps;						\
-} while (0)
-
-
-static Bool
-cwCreateBackingGC(GCPtr pGC, DrawablePtr pDrawable)
-{
-    cwGCRec *pPriv = getCwGC(pGC);
-    int status, x_off, y_off;
-    XID noexpose = xFalse;
-    DrawablePtr pBackingDrawable;
-
-    pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
-    pPriv->pBackingGC = CreateGC(pBackingDrawable, GCGraphicsExposures,
-				 &noexpose, &status, (XID)0, serverClient);
-    if (status != Success)
-	return FALSE;
-
-    pPriv->serialNumber = 0;
-    pPriv->stateChanges = (1 << (GCLastBit + 1)) - 1;
-
-    return TRUE;
-}
-
-static void
-cwDestroyBackingGC(GCPtr pGC)
-{
-    cwGCPtr pPriv;
-
-    pPriv = (cwGCPtr) getCwGC (pGC);
-
-    if (pPriv->pBackingGC) {
-	FreeGC(pPriv->pBackingGC, (XID)0);
-	pPriv->pBackingGC = NULL;
-    }
-}
-
-static void
-cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable)
-{
-    GCPtr   	  	pBackingGC;
-    cwGCPtr		pPriv;
-    DrawablePtr		pBackingDrawable;
-    int			x_off, y_off;
-
-    pPriv = (cwGCPtr) getCwGC (pGC);
-
-    FUNC_PROLOGUE(pGC, pPriv);
-
-    /*
-     * Must call ValidateGC to ensure pGC->pCompositeClip is valid
-     */
-    (*pGC->funcs->ValidateGC)(pGC, stateChanges, pDrawable);
-
-    if (!cwDrawableIsRedirWindow(pDrawable)) {
-	cwDestroyBackingGC(pGC);
-	FUNC_EPILOGUE(pGC, pPriv);
-	return;
-    } else {
-	if (!pPriv->pBackingGC && !cwCreateBackingGC(pGC, pDrawable)) {
-	    FUNC_EPILOGUE(pGC, pPriv);
-	    return;
-	}
-    }
-
-    pBackingGC = pPriv->pBackingGC;
-    pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
-
-    pPriv->stateChanges |= stateChanges;
-
-    /*
-     * Copy the composite clip into the backing GC if either
-     * the drawable clip list has changed or the client has changed
-     * the client clip data
-     */
-    if (pDrawable->serialNumber != pPriv->serialNumber ||
-	(pPriv->stateChanges & (GCClipXOrigin|GCClipYOrigin|GCClipMask)))
-    {
-	XID vals[2];
-	RegionPtr   pCompositeClip;
-
-	pCompositeClip = REGION_CREATE (pScreen, NULL, 0);
-	REGION_COPY (pScreen, pCompositeClip, pGC->pCompositeClip);
-
-	/* Either the drawable has changed, or the clip list in the drawable has
-	 * changed.  Copy the new clip list over and set the new translated
-	 * offset for it.
-	 */
-	
-	(*pBackingGC->funcs->ChangeClip) (pBackingGC, CT_REGION,
-					  (pointer) pCompositeClip, 0);
-	
-	vals[0] = x_off - pDrawable->x;
-	vals[1] = y_off - pDrawable->y;
-	dixChangeGC(NullClient, pBackingGC,
-		    (GCClipXOrigin | GCClipYOrigin), vals, NULL);
-
-	pPriv->serialNumber = pDrawable->serialNumber;
-	/*
-	 * Mask off any client clip changes to make sure
-	 * the clip list set above remains in effect
-	 */
-	pPriv->stateChanges &= ~(GCClipXOrigin|GCClipYOrigin|GCClipMask);
-    }
-
-    if (pPriv->stateChanges) {
-	CopyGC(pGC, pBackingGC, pPriv->stateChanges);
-	pPriv->stateChanges = 0;
-    }
-
-    if ((pGC->patOrg.x + x_off) != pBackingGC->patOrg.x ||
-	(pGC->patOrg.y + y_off) != pBackingGC->patOrg.y)
-    {
-	XID vals[2];
-	vals[0] = pGC->patOrg.x + x_off;
-	vals[1] = pGC->patOrg.y + y_off;
-	dixChangeGC(NullClient, pBackingGC,
-		    (GCTileStipXOrigin | GCTileStipYOrigin), vals, NULL);
-    }
-
-    ValidateGC(pBackingDrawable, pBackingGC);
-
-    FUNC_EPILOGUE(pGC, pPriv);
-}
-
-static void
-cwChangeGC(GCPtr pGC, unsigned long mask)
-{
-    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);
-
-    FUNC_PROLOGUE(pGC, pPriv);
-
-    (*pGC->funcs->ChangeGC) (pGC, mask);
-
-    FUNC_EPILOGUE(pGC, pPriv);
-}
-
-static void
-cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst)
-{
-    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGCDst->devPrivates, cwGCKey);
-
-    FUNC_PROLOGUE(pGCDst, pPriv);
-
-    (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);
-
-    FUNC_EPILOGUE(pGCDst, pPriv);
-}
-
-static void
-cwDestroyGC(GCPtr pGC)
-{
-    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);
-
-    FUNC_PROLOGUE(pGC, pPriv);
-
-    cwDestroyBackingGC(pGC);
-
-    (*pGC->funcs->DestroyGC) (pGC);
-
-    /* leave it unwrapped */
-}
-
-static void
-cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects)
-{
-    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);
-
-    FUNC_PROLOGUE(pGC, pPriv);
-
-    (*pGC->funcs->ChangeClip)(pGC, type, pvalue, nrects);
-
-    FUNC_EPILOGUE(pGC, pPriv);
-}
-
-static void
-cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc)
-{
-    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pgcDst->devPrivates, cwGCKey);
-
-    FUNC_PROLOGUE(pgcDst, pPriv);
-
-    (*pgcDst->funcs->CopyClip)(pgcDst, pgcSrc);
-
-    FUNC_EPILOGUE(pgcDst, pPriv);
-}
-
-static void
-cwDestroyClip(GCPtr pGC)
-{
-    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);
-
-    FUNC_PROLOGUE(pGC, pPriv);
-
-    (*pGC->funcs->DestroyClip)(pGC);
-
-    FUNC_EPILOGUE(pGC, pPriv);
-}
-
-/*
- * Screen wrappers.
- */
-
-#define SCREEN_PROLOGUE(pScreen, field)				\
-  ((pScreen)->field = getCwScreen(pScreen)->field)
-
-#define SCREEN_EPILOGUE(pScreen, field, wrapper) do {		\
-    getCwScreen(pScreen)->field = (pScreen)->field;		\
-    (pScreen)->field = (wrapper);				\
-} while (0)
-
-static Bool
-cwCreateGC(GCPtr pGC)
-{
-    cwGCPtr	pPriv = getCwGC(pGC);
-    ScreenPtr	pScreen = pGC->pScreen;
-    Bool	ret;
-
-    bzero(pPriv, sizeof(cwGCRec));
-    SCREEN_PROLOGUE(pScreen, CreateGC);
-
-    if ( (ret = (*pScreen->CreateGC)(pGC)) )
-	FUNC_EPILOGUE(pGC, pPriv);
-
-    SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);
-
-    return ret;
-}
-
-static void
-cwGetImage(DrawablePtr pSrc, int x, int y, int w, int h, unsigned int format,
-	   unsigned long planemask, char *pdstLine)
-{
-    ScreenPtr pScreen = pSrc->pScreen;
-    DrawablePtr pBackingDrawable;
-    int src_off_x, src_off_y;
-    
-    SCREEN_PROLOGUE(pScreen, GetImage);
-
-    pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);
-
-    CW_OFFSET_XY_SRC(x, y);
-
-    (*pScreen->GetImage)(pBackingDrawable, x, y, w, h, format, planemask,
-			 pdstLine);
-
-    SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);
-}
-
-static void
-cwGetSpans(DrawablePtr pSrc, int wMax, DDXPointPtr ppt, int *pwidth,
-	   int nspans, char *pdstStart)
-{
-    ScreenPtr pScreen = pSrc->pScreen;
-    DrawablePtr pBackingDrawable;
-    int i;
-    int src_off_x, src_off_y;
-    
-    SCREEN_PROLOGUE(pScreen, GetSpans);
-
-    pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);
-
-    for (i = 0; i < nspans; i++)
-	CW_OFFSET_XY_SRC(ppt[i].x, ppt[i].y);
-
-    (*pScreen->GetSpans)(pBackingDrawable, wMax, ppt, pwidth, nspans,
-			 pdstStart);
-
-    SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);
-}
-
-
-static void
-cwCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)
-{
-    ScreenPtr pScreen = pWin->drawable.pScreen;
-
-    SCREEN_PROLOGUE(pScreen, CopyWindow);
-
-    if (!cwDrawableIsRedirWindow((DrawablePtr)pWin)) {
-	(*pScreen->CopyWindow)(pWin, ptOldOrg, prgnSrc);
-    } else {
-	GCPtr	    pGC;
-	BoxPtr	    pExtents;
-	int	    x_off, y_off;
-	int	    dx, dy;
-	PixmapPtr   pBackingPixmap;
-	RegionPtr   pClip;
-	int	    src_x, src_y, dst_x, dst_y, w, h;
-
-	dx = ptOldOrg.x - pWin->drawable.x;
-	dy = ptOldOrg.y - pWin->drawable.y;
-
-	pExtents = REGION_EXTENTS(pScreen, prgnSrc);
-
-	pBackingPixmap = (PixmapPtr) cwGetBackingDrawable((DrawablePtr)pWin,
-							  &x_off, &y_off);
-
-	src_x = pExtents->x1 - pBackingPixmap->screen_x;
-	src_y = pExtents->y1 - pBackingPixmap->screen_y;
-	w = pExtents->x2 - pExtents->x1;
-	h = pExtents->y2 - pExtents->y1;
-	dst_x = src_x - dx;
-	dst_y = src_y - dy;
-			       
-	/* Translate region (as required by API) */
-	REGION_TRANSLATE(pScreen, prgnSrc, -dx, -dy);
-	
-	pGC = GetScratchGC(pBackingPixmap->drawable.depth, pScreen);
-	/*
-	 * Copy region to GC as clip, aligning as dest clip
-	 */
-	pClip = REGION_CREATE (pScreen, NULL, 0);
-	REGION_INTERSECT(pScreen, pClip, &pWin->borderClip, prgnSrc);
-	REGION_TRANSLATE(pScreen, pClip, 
-			 -pBackingPixmap->screen_x,
-			 -pBackingPixmap->screen_y);
-	
-	(*pGC->funcs->ChangeClip) (pGC, CT_REGION, pClip, 0);
-
-	ValidateGC(&pBackingPixmap->drawable, pGC);
-
-	(*pGC->ops->CopyArea) (&pBackingPixmap->drawable,
-			       &pBackingPixmap->drawable, pGC,
-			       src_x, src_y, w, h, dst_x, dst_y);
-
-	(*pGC->funcs->DestroyClip) (pGC);
-
-	FreeScratchGC(pGC);
-    }
-	
-    SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);
-}
-
-static PixmapPtr
-cwGetWindowPixmap (WindowPtr pWin)
-{
-    PixmapPtr	pPixmap = getCwPixmap (pWin);
-
-    if (!pPixmap)
-    {
-	ScreenPtr   pScreen = pWin->drawable.pScreen;
-	SCREEN_PROLOGUE(pScreen, GetWindowPixmap);
-	if (pScreen->GetWindowPixmap)
-	    pPixmap = (*pScreen->GetWindowPixmap) (pWin);
-	SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);
-    }
-    return pPixmap;
-}
-
-static void
-cwSetWindowPixmap (WindowPtr pWindow, PixmapPtr pPixmap)
-{
-    ScreenPtr	pScreen = pWindow->drawable.pScreen;
-    
-    if (pPixmap == (*pScreen->GetScreenPixmap) (pScreen))
-	pPixmap = NULL;
-    setCwPixmap (pWindow, pPixmap);
-}
-
-/* Screen initialization/teardown */
-void
-miInitializeCompositeWrapper(ScreenPtr pScreen)
-{
-    cwScreenPtr pScreenPriv;
-    Bool has_render = GetPictureScreenIfSet(pScreen) != NULL;
-
-    if (!dixRequestPrivate(cwGCKey, sizeof(cwGCRec)))
-	return;
-
-    pScreenPriv = xalloc(sizeof(cwScreenRec));
-    if (!pScreenPriv)
-	return;
-
-    dixSetPrivate(&pScreen->devPrivates, cwScreenKey, pScreenPriv);
-    
-    SCREEN_EPILOGUE(pScreen, CloseScreen, cwCloseScreen);
-    SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);
-    SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);
-    SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);
-    SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);
-
-    SCREEN_EPILOGUE(pScreen, SetWindowPixmap, cwSetWindowPixmap);
-    SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);
-
-    if (has_render)
-	cwInitializeRender(pScreen);
-}
-
-static Bool
-cwCloseScreen (int i, ScreenPtr pScreen)
-{
-    cwScreenPtr   pScreenPriv;
-    PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);
-
-    pScreenPriv = (cwScreenPtr)dixLookupPrivate(&pScreen->devPrivates,
-						cwScreenKey);
-    pScreen->CloseScreen = pScreenPriv->CloseScreen;
-    pScreen->GetImage = pScreenPriv->GetImage;
-    pScreen->GetSpans = pScreenPriv->GetSpans;
-    pScreen->CreateGC = pScreenPriv->CreateGC;
-    pScreen->CopyWindow = pScreenPriv->CopyWindow;
-
-    if (ps)
-	cwFiniRender(pScreen);
-
-    xfree((pointer)pScreenPriv);
-
-    return (*pScreen->CloseScreen)(i, pScreen);
-}
+/*

+ * Copyright © 2004 Eric Anholt

+ *

+ * 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 Eric Anholt not be used in

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

+ * specific, written prior permission.  Eric Anholt makes no

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

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

+ *

+ * ERIC ANHOLT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

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

+ * EVENT SHALL ERIC ANHOLT 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 <string.h>

+

+#include "gcstruct.h"

+#include "windowstr.h"

+#include "cw.h"

+

+#define CW_DEBUG 1

+

+#if CW_DEBUG

+#define CW_ASSERT(x) do {						\

+    if (!(x)) {								\

+	ErrorF("composite wrapper: assertion failed at %s:%d\n", __FUNC__, \

+	    __LINE__);							\

+    }									\

+} while (0)

+#else

+#define CW_ASSERT(x) do {} while (0)

+#endif

+

+static int cwGCKeyIndex;

+DevPrivateKey cwGCKey = &cwGCKeyIndex;

+static int cwScreenKeyIndex;

+DevPrivateKey cwScreenKey = &cwScreenKeyIndex;

+static int cwWindowKeyIndex;

+DevPrivateKey cwWindowKey = &cwWindowKeyIndex;

+static int cwPictureKeyIndex;

+DevPrivateKey cwPictureKey = &cwPictureKeyIndex;

+extern GCOps cwGCOps;

+

+static Bool

+cwCloseScreen (int i, ScreenPtr pScreen);

+

+static void

+cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable);

+static void

+cwChangeGC(GCPtr pGC, unsigned long mask);

+static void

+cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst);

+static void

+cwDestroyGC(GCPtr pGC);

+static void

+cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects);

+static void

+cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc);

+static void

+cwDestroyClip(GCPtr pGC);

+

+GCFuncs cwGCFuncs = {

+    cwValidateGC,

+    cwChangeGC,

+    cwCopyGC,

+    cwDestroyGC,

+    cwChangeClip,

+    cwDestroyClip,

+    cwCopyClip,

+};

+

+/* Find the real drawable to draw to, and provide offsets that will translate

+ * window coordinates to backing pixmap coordinates.

+ */

+DrawablePtr

+cwGetBackingDrawable(DrawablePtr pDrawable, int *x_off, int *y_off)

+{

+    PixmapPtr	pPixmap;

+    

+    if (pDrawable->type == DRAWABLE_WINDOW && 

+	(pPixmap = getCwPixmap ((WindowPtr) pDrawable)))

+    {

+	*x_off = pDrawable->x - pPixmap->screen_x;

+	*y_off = pDrawable->y - pPixmap->screen_y;

+	return &pPixmap->drawable;

+    } else {

+	*x_off = *y_off = 0;

+	return pDrawable;

+    }

+}

+

+#define FUNC_PROLOGUE(pGC, pPriv) do {					\

+    (pGC)->funcs = (pPriv)->wrapFuncs;					\

+    (pGC)->ops = (pPriv)->wrapOps;					\

+} while (0)

+

+#define FUNC_EPILOGUE(pGC, pPriv) do {					\

+    (pPriv)->wrapFuncs = (pGC)->funcs;					\

+    (pPriv)->wrapOps = (pGC)->ops;					\

+    (pGC)->funcs = &cwGCFuncs;						\

+    (pGC)->ops = &cwGCOps;						\

+} while (0)

+

+

+static Bool

+cwCreateBackingGC(GCPtr pGC, DrawablePtr pDrawable)

+{

+    cwGCRec *pPriv = getCwGC(pGC);

+    int status, x_off, y_off;

+    XID noexpose = xFalse;

+    DrawablePtr pBackingDrawable;

+

+    pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);

+    pPriv->pBackingGC = CreateGC(pBackingDrawable, GCGraphicsExposures,

+				 &noexpose, &status, (XID)0, serverClient);

+    if (status != Success)

+	return FALSE;

+

+    pPriv->serialNumber = 0;

+    pPriv->stateChanges = GCAllBits;

+

+    return TRUE;

+}

+

+static void

+cwDestroyBackingGC(GCPtr pGC)

+{

+    cwGCPtr pPriv;

+

+    pPriv = (cwGCPtr) getCwGC (pGC);

+

+    if (pPriv->pBackingGC) {

+	FreeGC(pPriv->pBackingGC, (XID)0);

+	pPriv->pBackingGC = NULL;

+    }

+}

+

+static void

+cwValidateGC(GCPtr pGC, unsigned long stateChanges, DrawablePtr pDrawable)

+{

+    GCPtr   	  	pBackingGC;

+    cwGCPtr		pPriv;

+    DrawablePtr		pBackingDrawable;

+    int			x_off, y_off;

+

+    pPriv = (cwGCPtr) getCwGC (pGC);

+

+    FUNC_PROLOGUE(pGC, pPriv);

+

+    /*

+     * Must call ValidateGC to ensure pGC->pCompositeClip is valid

+     */

+    (*pGC->funcs->ValidateGC)(pGC, stateChanges, pDrawable);

+

+    if (!cwDrawableIsRedirWindow(pDrawable)) {

+	cwDestroyBackingGC(pGC);

+	FUNC_EPILOGUE(pGC, pPriv);

+	return;

+    } else {

+	if (!pPriv->pBackingGC && !cwCreateBackingGC(pGC, pDrawable)) {

+	    FUNC_EPILOGUE(pGC, pPriv);

+	    return;

+	}

+    }

+

+    pBackingGC = pPriv->pBackingGC;

+    pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);

+

+    pPriv->stateChanges |= stateChanges;

+

+    /*

+     * Copy the composite clip into the backing GC if either

+     * the drawable clip list has changed or the client has changed

+     * the client clip data

+     */

+    if (pDrawable->serialNumber != pPriv->serialNumber ||

+	(pPriv->stateChanges & (GCClipXOrigin|GCClipYOrigin|GCClipMask)))

+    {

+	ChangeGCVal vals[2];

+	RegionPtr   pCompositeClip;

+

+	pCompositeClip = REGION_CREATE (pScreen, NULL, 0);

+	REGION_COPY (pScreen, pCompositeClip, pGC->pCompositeClip);

+

+	/* Either the drawable has changed, or the clip list in the drawable has

+	 * changed.  Copy the new clip list over and set the new translated

+	 * offset for it.

+	 */

+	

+	(*pBackingGC->funcs->ChangeClip) (pBackingGC, CT_REGION,

+					  (pointer) pCompositeClip, 0);

+	

+	vals[0].val = x_off - pDrawable->x;

+	vals[1].val = y_off - pDrawable->y;

+	ChangeGC(NullClient, pBackingGC,

+		    (GCClipXOrigin | GCClipYOrigin), vals);

+

+	pPriv->serialNumber = pDrawable->serialNumber;

+	/*

+	 * Mask off any client clip changes to make sure

+	 * the clip list set above remains in effect

+	 */

+	pPriv->stateChanges &= ~(GCClipXOrigin|GCClipYOrigin|GCClipMask);

+    }

+

+    if (pPriv->stateChanges) {

+	CopyGC(pGC, pBackingGC, pPriv->stateChanges);

+	pPriv->stateChanges = 0;

+    }

+

+    if ((pGC->patOrg.x + x_off) != pBackingGC->patOrg.x ||

+	(pGC->patOrg.y + y_off) != pBackingGC->patOrg.y)

+    {

+	ChangeGCVal vals[2];

+	vals[0].val = pGC->patOrg.x + x_off;

+	vals[1].val = pGC->patOrg.y + y_off;

+	ChangeGC(NullClient, pBackingGC,

+		    (GCTileStipXOrigin | GCTileStipYOrigin), vals);

+    }

+

+    ValidateGC(pBackingDrawable, pBackingGC);

+

+    FUNC_EPILOGUE(pGC, pPriv);

+}

+

+static void

+cwChangeGC(GCPtr pGC, unsigned long mask)

+{

+    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);

+

+    FUNC_PROLOGUE(pGC, pPriv);

+

+    (*pGC->funcs->ChangeGC) (pGC, mask);

+

+    FUNC_EPILOGUE(pGC, pPriv);

+}

+

+static void

+cwCopyGC(GCPtr pGCSrc, unsigned long mask, GCPtr pGCDst)

+{

+    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGCDst->devPrivates, cwGCKey);

+

+    FUNC_PROLOGUE(pGCDst, pPriv);

+

+    (*pGCDst->funcs->CopyGC) (pGCSrc, mask, pGCDst);

+

+    FUNC_EPILOGUE(pGCDst, pPriv);

+}

+

+static void

+cwDestroyGC(GCPtr pGC)

+{

+    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);

+

+    FUNC_PROLOGUE(pGC, pPriv);

+

+    cwDestroyBackingGC(pGC);

+

+    (*pGC->funcs->DestroyGC) (pGC);

+

+    /* leave it unwrapped */

+}

+

+static void

+cwChangeClip(GCPtr pGC, int type, pointer pvalue, int nrects)

+{

+    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);

+

+    FUNC_PROLOGUE(pGC, pPriv);

+

+    (*pGC->funcs->ChangeClip)(pGC, type, pvalue, nrects);

+

+    FUNC_EPILOGUE(pGC, pPriv);

+}

+

+static void

+cwCopyClip(GCPtr pgcDst, GCPtr pgcSrc)

+{

+    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pgcDst->devPrivates, cwGCKey);

+

+    FUNC_PROLOGUE(pgcDst, pPriv);

+

+    (*pgcDst->funcs->CopyClip)(pgcDst, pgcSrc);

+

+    FUNC_EPILOGUE(pgcDst, pPriv);

+}

+

+static void

+cwDestroyClip(GCPtr pGC)

+{

+    cwGCPtr pPriv = (cwGCPtr)dixLookupPrivate(&pGC->devPrivates, cwGCKey);

+

+    FUNC_PROLOGUE(pGC, pPriv);

+

+    (*pGC->funcs->DestroyClip)(pGC);

+

+    FUNC_EPILOGUE(pGC, pPriv);

+}

+

+/*

+ * Screen wrappers.

+ */

+

+#define SCREEN_PROLOGUE(pScreen, field)				\

+  ((pScreen)->field = getCwScreen(pScreen)->field)

+

+#define SCREEN_EPILOGUE(pScreen, field, wrapper) do {		\

+    getCwScreen(pScreen)->field = (pScreen)->field;		\

+    (pScreen)->field = (wrapper);				\

+} while (0)

+

+static Bool

+cwCreateGC(GCPtr pGC)

+{

+    cwGCPtr	pPriv = getCwGC(pGC);

+    ScreenPtr	pScreen = pGC->pScreen;

+    Bool	ret;

+

+    bzero(pPriv, sizeof(cwGCRec));

+    SCREEN_PROLOGUE(pScreen, CreateGC);

+

+    if ( (ret = (*pScreen->CreateGC)(pGC)) )

+	FUNC_EPILOGUE(pGC, pPriv);

+

+    SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);

+

+    return ret;

+}

+

+static void

+cwGetImage(DrawablePtr pSrc, int x, int y, int w, int h, unsigned int format,

+	   unsigned long planemask, char *pdstLine)

+{

+    ScreenPtr pScreen = pSrc->pScreen;

+    DrawablePtr pBackingDrawable;

+    int src_off_x, src_off_y;

+    

+    SCREEN_PROLOGUE(pScreen, GetImage);

+

+    pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);

+

+    CW_OFFSET_XY_SRC(x, y);

+

+    (*pScreen->GetImage)(pBackingDrawable, x, y, w, h, format, planemask,

+			 pdstLine);

+

+    SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);

+}

+

+static void

+cwGetSpans(DrawablePtr pSrc, int wMax, DDXPointPtr ppt, int *pwidth,

+	   int nspans, char *pdstStart)

+{

+    ScreenPtr pScreen = pSrc->pScreen;

+    DrawablePtr pBackingDrawable;

+    int i;

+    int src_off_x, src_off_y;

+    

+    SCREEN_PROLOGUE(pScreen, GetSpans);

+

+    pBackingDrawable = cwGetBackingDrawable(pSrc, &src_off_x, &src_off_y);

+

+    for (i = 0; i < nspans; i++)

+	CW_OFFSET_XY_SRC(ppt[i].x, ppt[i].y);

+

+    (*pScreen->GetSpans)(pBackingDrawable, wMax, ppt, pwidth, nspans,

+			 pdstStart);

+

+    SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);

+}

+

+

+static void

+cwCopyWindow(WindowPtr pWin, DDXPointRec ptOldOrg, RegionPtr prgnSrc)

+{

+    ScreenPtr pScreen = pWin->drawable.pScreen;

+

+    SCREEN_PROLOGUE(pScreen, CopyWindow);

+

+    if (!cwDrawableIsRedirWindow((DrawablePtr)pWin)) {

+	(*pScreen->CopyWindow)(pWin, ptOldOrg, prgnSrc);

+    } else {

+	GCPtr	    pGC;

+	BoxPtr	    pExtents;

+	int	    x_off, y_off;

+	int	    dx, dy;

+	PixmapPtr   pBackingPixmap;

+	RegionPtr   pClip;

+	int	    src_x, src_y, dst_x, dst_y, w, h;

+

+	dx = ptOldOrg.x - pWin->drawable.x;

+	dy = ptOldOrg.y - pWin->drawable.y;

+

+	pExtents = REGION_EXTENTS(pScreen, prgnSrc);

+

+	pBackingPixmap = (PixmapPtr) cwGetBackingDrawable((DrawablePtr)pWin,

+							  &x_off, &y_off);

+

+	src_x = pExtents->x1 - pBackingPixmap->screen_x;

+	src_y = pExtents->y1 - pBackingPixmap->screen_y;

+	w = pExtents->x2 - pExtents->x1;

+	h = pExtents->y2 - pExtents->y1;

+	dst_x = src_x - dx;

+	dst_y = src_y - dy;

+			       

+	/* Translate region (as required by API) */

+	REGION_TRANSLATE(pScreen, prgnSrc, -dx, -dy);

+	

+	pGC = GetScratchGC(pBackingPixmap->drawable.depth, pScreen);

+	/*

+	 * Copy region to GC as clip, aligning as dest clip

+	 */

+	pClip = REGION_CREATE (pScreen, NULL, 0);

+	REGION_INTERSECT(pScreen, pClip, &pWin->borderClip, prgnSrc);

+	REGION_TRANSLATE(pScreen, pClip, 

+			 -pBackingPixmap->screen_x,

+			 -pBackingPixmap->screen_y);

+	

+	(*pGC->funcs->ChangeClip) (pGC, CT_REGION, pClip, 0);

+

+	ValidateGC(&pBackingPixmap->drawable, pGC);

+

+	(*pGC->ops->CopyArea) (&pBackingPixmap->drawable,

+			       &pBackingPixmap->drawable, pGC,

+			       src_x, src_y, w, h, dst_x, dst_y);

+

+	(*pGC->funcs->DestroyClip) (pGC);

+

+	FreeScratchGC(pGC);

+    }

+	

+    SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);

+}

+

+static PixmapPtr

+cwGetWindowPixmap (WindowPtr pWin)

+{

+    PixmapPtr	pPixmap = getCwPixmap (pWin);

+

+    if (!pPixmap)

+    {

+	ScreenPtr   pScreen = pWin->drawable.pScreen;

+	SCREEN_PROLOGUE(pScreen, GetWindowPixmap);

+	if (pScreen->GetWindowPixmap)

+	    pPixmap = (*pScreen->GetWindowPixmap) (pWin);

+	SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);

+    }

+    return pPixmap;

+}

+

+static void

+cwSetWindowPixmap (WindowPtr pWindow, PixmapPtr pPixmap)

+{

+    ScreenPtr	pScreen = pWindow->drawable.pScreen;

+    

+    if (pPixmap == (*pScreen->GetScreenPixmap) (pScreen))

+	pPixmap = NULL;

+    setCwPixmap (pWindow, pPixmap);

+}

+

+/* Screen initialization/teardown */

+void

+miInitializeCompositeWrapper(ScreenPtr pScreen)

+{

+    cwScreenPtr pScreenPriv;

+    Bool has_render = GetPictureScreenIfSet(pScreen) != NULL;

+

+    if (!dixRequestPrivate(cwGCKey, sizeof(cwGCRec)))

+	return;

+

+    pScreenPriv = malloc(sizeof(cwScreenRec));

+    if (!pScreenPriv)

+	return;

+

+    dixSetPrivate(&pScreen->devPrivates, cwScreenKey, pScreenPriv);

+    

+    SCREEN_EPILOGUE(pScreen, CloseScreen, cwCloseScreen);

+    SCREEN_EPILOGUE(pScreen, GetImage, cwGetImage);

+    SCREEN_EPILOGUE(pScreen, GetSpans, cwGetSpans);

+    SCREEN_EPILOGUE(pScreen, CreateGC, cwCreateGC);

+    SCREEN_EPILOGUE(pScreen, CopyWindow, cwCopyWindow);

+

+    SCREEN_EPILOGUE(pScreen, SetWindowPixmap, cwSetWindowPixmap);

+    SCREEN_EPILOGUE(pScreen, GetWindowPixmap, cwGetWindowPixmap);

+

+    if (has_render)

+	cwInitializeRender(pScreen);

+}

+

+static Bool

+cwCloseScreen (int i, ScreenPtr pScreen)

+{

+    cwScreenPtr   pScreenPriv;

+    PictureScreenPtr ps = GetPictureScreenIfSet(pScreen);

+

+    pScreenPriv = (cwScreenPtr)dixLookupPrivate(&pScreen->devPrivates,

+						cwScreenKey);

+    pScreen->CloseScreen = pScreenPriv->CloseScreen;

+    pScreen->GetImage = pScreenPriv->GetImage;

+    pScreen->GetSpans = pScreenPriv->GetSpans;

+    pScreen->CreateGC = pScreenPriv->CreateGC;

+    pScreen->CopyWindow = pScreenPriv->CopyWindow;

+

+    if (ps)

+	cwFiniRender(pScreen);

+

+    free((pointer)pScreenPriv);

+

+    return (*pScreen->CloseScreen)(i, pScreen);

+}