initial state (xorg-server 1.10.2)

6 files changed, 2362 insertions, 0 deletions

diff --git a/miext/cw/Makefile.am b/miext/cw/Makefile.am
new file mode 100644
index 0000000..e056f42
--- /dev/null
+++ b/miext/cw/Makefile.am
@@ -0,0 +1,11 @@
+noinst_LTLIBRARIES = libcw.la
+
+AM_CFLAGS = $(DIX_CFLAGS)
+
+INCLUDES = -I$(top_srcdir)/hw/xfree86/os-support
+
+libcw_la_SOURCES = 	\
+	cw.c		\
+	cw_ops.c	\
+	cw_render.c     \
+        cw.h
diff --git a/miext/cw/Makefile.in b/miext/cw/Makefile.in
new file mode 100644
index 0000000..14b13ef
--- /dev/null
+++ b/miext/cw/Makefile.in
@@ -0,0 +1,706 @@
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+# @configure_input@
+
+# Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
+# 2003, 2004, 2005, 2006, 2007, 2008, 2009  Free Software Foundation,
+# Inc.
+# This Makefile.in is free software; the Free Software Foundation
+# gives unlimited permission to copy and/or distribute it,
+# with or without modifications, as long as this notice is preserved.
+
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY, to the extent permitted by law; without
+# even the implied warranty of MERCHANTABILITY or FITNESS FOR A
+# PARTICULAR PURPOSE.
+
+@SET_MAKE@
+
+VPATH = @srcdir@
+pkgdatadir = $(datadir)/@PACKAGE@
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+NORMAL_UNINSTALL = :
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+POST_UNINSTALL = :
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+host_triplet = @host@
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+	$(ACLOCAL_M4)
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+CONFIG_HEADER = $(top_builddir)/include/do-not-use-config.h \
+	$(top_builddir)/include/xorg-server.h \
+	$(top_builddir)/include/dix-config.h \
+	$(top_builddir)/include/xorg-config.h \
+	$(top_builddir)/include/xkb-config.h \
+	$(top_builddir)/include/xwin-config.h \
+	$(top_builddir)/include/kdrive-config.h \
+	$(top_builddir)/include/version-config.h
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+CONFIG_CLEAN_VPATH_FILES =
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+	cw.c		\
+	cw_ops.c	\
+	cw_render.c     \
+        cw.h
+
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+	    *$$dep*) \
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+	      exit 1;; \
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+	$(am__cd) $(top_srcdir) && \
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+	  dir="`echo $$p | sed -e 's|/[^/]*$$||'`"; \
+	  test "$$dir" != "$$p" || dir=.; \
+	  echo "rm -f \"$${dir}/so_locations\""; \
+	  rm -f "$${dir}/so_locations"; \
+	done
+libcw.la: $(libcw_la_OBJECTS) $(libcw_la_DEPENDENCIES) 
+	$(AM_V_CCLD)$(LINK)  $(libcw_la_OBJECTS) $(libcw_la_LIBADD) $(LIBS)
+
+mostlyclean-compile:
+	-rm -f *.$(OBJEXT)
+
+distclean-compile:
+	-rm -f *.tab.c
+
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cw.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cw_ops.Plo@am__quote@
+@AMDEP_TRUE@@am__include@ @am__quote@./$(DEPDIR)/cw_render.Plo@am__quote@
+
+.c.o:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_FALSE@	$(AM_V_CC) @AM_BACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(COMPILE) -c $<
+
+.c.obj:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(COMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ `$(CYGPATH_W) '$<'`
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Po
+@am__fastdepCC_FALSE@	$(AM_V_CC) @AM_BACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=no @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(COMPILE) -c `$(CYGPATH_W) '$<'`
+
+.c.lo:
+@am__fastdepCC_TRUE@	$(AM_V_CC)$(LTCOMPILE) -MT $@ -MD -MP -MF $(DEPDIR)/$*.Tpo -c -o $@ $<
+@am__fastdepCC_TRUE@	$(AM_V_at)$(am__mv) $(DEPDIR)/$*.Tpo $(DEPDIR)/$*.Plo
+@am__fastdepCC_FALSE@	$(AM_V_CC) @AM_BACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	source='$<' object='$@' libtool=yes @AMDEPBACKSLASH@
+@AMDEP_TRUE@@am__fastdepCC_FALSE@	DEPDIR=$(DEPDIR) $(CCDEPMODE) $(depcomp) @AMDEPBACKSLASH@
+@am__fastdepCC_FALSE@	$(LTCOMPILE) -c -o $@ $<
+
+mostlyclean-libtool:
+	-rm -f *.lo
+
+clean-libtool:
+	-rm -rf .libs _libs
+
+ID: $(HEADERS) $(SOURCES) $(LISP) $(TAGS_FILES)
+	list='$(SOURCES) $(HEADERS) $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	mkid -fID $$unique
+tags: TAGS
+
+TAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	set x; \
+	here=`pwd`; \
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	shift; \
+	if test -z "$(ETAGS_ARGS)$$*$$unique"; then :; else \
+	  test -n "$$unique" || unique=$$empty_fix; \
+	  if test $$# -gt 0; then \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      "$$@" $$unique; \
+	  else \
+	    $(ETAGS) $(ETAGSFLAGS) $(AM_ETAGSFLAGS) $(ETAGS_ARGS) \
+	      $$unique; \
+	  fi; \
+	fi
+ctags: CTAGS
+CTAGS:  $(HEADERS) $(SOURCES)  $(TAGS_DEPENDENCIES) \
+		$(TAGS_FILES) $(LISP)
+	list='$(SOURCES) $(HEADERS)  $(LISP) $(TAGS_FILES)'; \
+	unique=`for i in $$list; do \
+	    if test -f "$$i"; then echo $$i; else echo $(srcdir)/$$i; fi; \
+	  done | \
+	  $(AWK) '{ files[$$0] = 1; nonempty = 1; } \
+	      END { if (nonempty) { for (i in files) print i; }; }'`; \
+	test -z "$(CTAGS_ARGS)$$unique" \
+	  || $(CTAGS) $(CTAGSFLAGS) $(AM_CTAGSFLAGS) $(CTAGS_ARGS) \
+	     $$unique
+
+GTAGS:
+	here=`$(am__cd) $(top_builddir) && pwd` \
+	  && $(am__cd) $(top_srcdir) \
+	  && gtags -i $(GTAGS_ARGS) "$$here"
+
+distclean-tags:
+	-rm -f TAGS ID GTAGS GRTAGS GSYMS GPATH tags
+
+distdir: $(DISTFILES)
+	@srcdirstrip=`echo "$(srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	topsrcdirstrip=`echo "$(top_srcdir)" | sed 's/[].[^$$\\*]/\\\\&/g'`; \
+	list='$(DISTFILES)'; \
+	  dist_files=`for file in $$list; do echo $$file; done | \
+	  sed -e "s|^$$srcdirstrip/||;t" \
+	      -e "s|^$$topsrcdirstrip/|$(top_builddir)/|;t"`; \
+	case $$dist_files in \
+	  */*) $(MKDIR_P) `echo "$$dist_files" | \
+			   sed '/\//!d;s|^|$(distdir)/|;s,/[^/]*$$,,' | \
+			   sort -u` ;; \
+	esac; \
+	for file in $$dist_files; do \
+	  if test -f $$file || test -d $$file; then d=.; else d=$(srcdir); fi; \
+	  if test -d $$d/$$file; then \
+	    dir=`echo "/$$file" | sed -e 's,/[^/]*$$,,'`; \
+	    if test -d "$(distdir)/$$file"; then \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    if test -d $(srcdir)/$$file && test $$d != $(srcdir); then \
+	      cp -fpR $(srcdir)/$$file "$(distdir)$$dir" || exit 1; \
+	      find "$(distdir)/$$file" -type d ! -perm -700 -exec chmod u+rwx {} \;; \
+	    fi; \
+	    cp -fpR $$d/$$file "$(distdir)$$dir" || exit 1; \
+	  else \
+	    test -f "$(distdir)/$$file" \
+	    || cp -p $$d/$$file "$(distdir)/$$file" \
+	    || exit 1; \
+	  fi; \
+	done
+check-am: all-am
+check: check-am
+all-am: Makefile $(LTLIBRARIES)
+installdirs:
+install: install-am
+install-exec: install-exec-am
+install-data: install-data-am
+uninstall: uninstall-am
+
+install-am: all-am
+	@$(MAKE) $(AM_MAKEFLAGS) install-exec-am install-data-am
+
+installcheck: installcheck-am
+install-strip:
+	$(MAKE) $(AM_MAKEFLAGS) INSTALL_PROGRAM="$(INSTALL_STRIP_PROGRAM)" \
+	  install_sh_PROGRAM="$(INSTALL_STRIP_PROGRAM)" INSTALL_STRIP_FLAG=-s \
+	  `test -z '$(STRIP)' || \
+	    echo "INSTALL_PROGRAM_ENV=STRIPPROG='$(STRIP)'"` install
+mostlyclean-generic:
+
+clean-generic:
+
+distclean-generic:
+	-test -z "$(CONFIG_CLEAN_FILES)" || rm -f $(CONFIG_CLEAN_FILES)
+	-test . = "$(srcdir)" || test -z "$(CONFIG_CLEAN_VPATH_FILES)" || rm -f $(CONFIG_CLEAN_VPATH_FILES)
+
+maintainer-clean-generic:
+	@echo "This command is intended for maintainers to use"
+	@echo "it deletes files that may require special tools to rebuild."
+clean: clean-am
+
+clean-am: clean-generic clean-libtool clean-noinstLTLIBRARIES \
+	mostlyclean-am
+
+distclean: distclean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+distclean-am: clean-am distclean-compile distclean-generic \
+	distclean-tags
+
+dvi: dvi-am
+
+dvi-am:
+
+html: html-am
+
+html-am:
+
+info: info-am
+
+info-am:
+
+install-data-am:
+
+install-dvi: install-dvi-am
+
+install-dvi-am:
+
+install-exec-am:
+
+install-html: install-html-am
+
+install-html-am:
+
+install-info: install-info-am
+
+install-info-am:
+
+install-man:
+
+install-pdf: install-pdf-am
+
+install-pdf-am:
+
+install-ps: install-ps-am
+
+install-ps-am:
+
+installcheck-am:
+
+maintainer-clean: maintainer-clean-am
+	-rm -rf ./$(DEPDIR)
+	-rm -f Makefile
+maintainer-clean-am: distclean-am maintainer-clean-generic
+
+mostlyclean: mostlyclean-am
+
+mostlyclean-am: mostlyclean-compile mostlyclean-generic \
+	mostlyclean-libtool
+
+pdf: pdf-am
+
+pdf-am:
+
+ps: ps-am
+
+ps-am:
+
+uninstall-am:
+
+.MAKE: install-am install-strip
+
+.PHONY: CTAGS GTAGS all all-am check check-am clean clean-generic \
+	clean-libtool clean-noinstLTLIBRARIES ctags distclean \
+	distclean-compile distclean-generic distclean-libtool \
+	distclean-tags distdir dvi dvi-am html html-am info info-am \
+	install install-am install-data install-data-am install-dvi \
+	install-dvi-am install-exec install-exec-am install-html \
+	install-html-am install-info install-info-am install-man \
+	install-pdf install-pdf-am install-ps install-ps-am \
+	install-strip installcheck installcheck-am installdirs \
+	maintainer-clean maintainer-clean-generic mostlyclean \
+	mostlyclean-compile mostlyclean-generic mostlyclean-libtool \
+	pdf pdf-am ps ps-am tags uninstall uninstall-am
+
+
+# Tell versions [3.59,3.63) of GNU make to not export all variables.
+# Otherwise a system limit (for SysV at least) may be exceeded.
+.NOEXPORT:
diff --git a/miext/cw/cw.c b/miext/cw/cw.c
new file mode 100644
index 0000000..3da3bc3
--- /dev/null
+++ b/miext/cw/cw.c
@@ -0,0 +1,527 @@
+/*
+ * 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
+
+DevPrivateKeyRec cwGCKeyRec;
+DevPrivateKeyRec cwScreenKeyRec;
+DevPrivateKeyRec cwWindowKeyRec;
+DevPrivateKeyRec cwPictureKeyRec;
+
+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 = RegionCreate(NULL, 0);
+	RegionCopy(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;
+
+    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 = RegionExtents(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) */
+	RegionTranslate(prgnSrc, -dx, -dy);
+	
+	pGC = GetScratchGC(pBackingPixmap->drawable.depth, pScreen);
+	/*
+	 * Copy region to GC as clip, aligning as dest clip
+	 */
+	pClip = RegionCreate(NULL, 0);
+	RegionIntersect(pClip, &pWin->borderClip, prgnSrc);
+	RegionTranslate(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 (!dixRegisterPrivateKey(&cwScreenKeyRec, PRIVATE_SCREEN, 0))
+	return;
+
+    if (!dixRegisterPrivateKey(&cwGCKeyRec, PRIVATE_GC, sizeof(cwGCRec)))
+	return;
+
+    if (!dixRegisterPrivateKey(&cwWindowKeyRec, PRIVATE_WINDOW, 0))
+	return;
+
+    if (!dixRegisterPrivateKey(&cwPictureKeyRec, PRIVATE_PICTURE, 0))
+	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);
+}
diff --git a/miext/cw/cw.h b/miext/cw/cw.h
new file mode 100644
index 0000000..31eb9e5
--- /dev/null
+++ b/miext/cw/cw.h
@@ -0,0 +1,171 @@
+/*
+ * 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 "gcstruct.h"
+#include "picturestr.h"
+#include "privates.h"
+
+/*
+ * One of these structures is allocated per GC that gets used with a window with
+ * backing pixmap.
+ */
+
+typedef struct {
+    GCPtr	    pBackingGC;	    /* Copy of the GC but with graphicsExposures
+				     * set FALSE and the clientClip set to
+				     * clip output to the valid regions of the
+				     * backing pixmap. */
+    unsigned long   serialNumber;   /* clientClip computed time */
+    unsigned long   stateChanges;   /* changes in parent gc since last copy */
+    GCOps	    *wrapOps;	    /* wrapped ops */
+    GCFuncs	    *wrapFuncs;	    /* wrapped funcs */
+} cwGCRec, *cwGCPtr;
+
+extern _X_EXPORT DevPrivateKeyRec cwGCKeyRec;
+#define cwGCKey (&cwGCKeyRec)
+
+#define getCwGC(pGC) ((cwGCPtr)dixLookupPrivate(&(pGC)->devPrivates, cwGCKey))
+#define setCwGC(pGC,p) dixSetPrivate(&(pGC)->devPrivates, cwGCKey, p)
+
+/*
+ * One of these structures is allocated per Picture that gets used with a
+ * window with a backing pixmap
+ */
+
+typedef struct {
+    PicturePtr	    pBackingPicture;
+    unsigned long   serialNumber;
+    unsigned long   stateChanges;
+} cwPictureRec, *cwPicturePtr;
+
+extern _X_EXPORT DevPrivateKeyRec cwPictureKeyRec;
+#define cwPictureKey (&cwPictureKeyRec)
+
+#define getCwPicture(pPicture) (pPicture->pDrawable ? \
+    (cwPicturePtr)dixLookupPrivate(&(pPicture)->devPrivates, cwPictureKey) : 0)
+#define setCwPicture(pPicture,p) dixSetPrivate(&(pPicture)->devPrivates, cwPictureKey, p)
+
+extern _X_EXPORT DevPrivateKeyRec cwWindowKeyRec;
+#define cwWindowKey (&cwWindowKeyRec)
+
+#define cwWindowPrivate(pWin) dixLookupPrivate(&(pWin)->devPrivates, cwWindowKey)
+#define getCwPixmap(pWindow)	    ((PixmapPtr) cwWindowPrivate(pWindow))
+#define setCwPixmap(pWindow,pPixmap) \
+    dixSetPrivate(&(pWindow)->devPrivates, cwWindowKey, pPixmap)
+
+#define cwDrawableIsRedirWindow(pDraw)					\
+	((pDraw)->type == DRAWABLE_WINDOW &&				\
+	 getCwPixmap((WindowPtr) (pDraw)) != NULL)
+
+typedef struct {
+    /*
+     * screen func wrappers
+     */
+    CloseScreenProcPtr		CloseScreen;
+    GetImageProcPtr		GetImage;
+    GetSpansProcPtr		GetSpans;
+    CreateGCProcPtr		CreateGC;
+
+    CopyWindowProcPtr		CopyWindow;
+
+    GetWindowPixmapProcPtr	GetWindowPixmap;
+    SetWindowPixmapProcPtr	SetWindowPixmap;
+    
+    DestroyPictureProcPtr	DestroyPicture;
+    ChangePictureClipProcPtr	ChangePictureClip;
+    DestroyPictureClipProcPtr	DestroyPictureClip;
+    
+    ChangePictureProcPtr	ChangePicture;
+    ValidatePictureProcPtr	ValidatePicture;
+
+    CompositeProcPtr		Composite;
+    CompositeRectsProcPtr	CompositeRects;
+
+    TrapezoidsProcPtr		Trapezoids;
+    TrianglesProcPtr		Triangles;
+    TriStripProcPtr		TriStrip;
+    TriFanProcPtr		TriFan;
+
+    RasterizeTrapezoidProcPtr	RasterizeTrapezoid;
+} cwScreenRec, *cwScreenPtr;
+
+extern _X_EXPORT DevPrivateKeyRec cwScreenKeyRec;
+#define cwScreenKey (&cwScreenKeyRec)
+
+#define getCwScreen(pScreen) ((cwScreenPtr)dixLookupPrivate(&(pScreen)->devPrivates, cwScreenKey))
+#define setCwScreen(pScreen,p) dixSetPrivate(&(pScreen)->devPrivates, cwScreenKey, p)
+
+#define CW_OFFSET_XYPOINTS(ppt, npt) do { \
+    DDXPointPtr _ppt = (DDXPointPtr)(ppt); \
+    int _i; \
+    for (_i = 0; _i < npt; _i++) { \
+	_ppt[_i].x += dst_off_x; \
+	_ppt[_i].y += dst_off_y; \
+    } \
+} while (0)
+
+#define CW_OFFSET_RECTS(prect, nrect) do { \
+    int _i; \
+    for (_i = 0; _i < nrect; _i++) { \
+	(prect)[_i].x += dst_off_x; \
+	(prect)[_i].y += dst_off_y; \
+    } \
+} while (0)
+
+#define CW_OFFSET_ARCS(parc, narc) do { \
+    int _i; \
+    for (_i = 0; _i < narc; _i++) { \
+	(parc)[_i].x += dst_off_x; \
+	(parc)[_i].y += dst_off_y; \
+    } \
+} while (0)
+
+#define CW_OFFSET_XY_DST(x, y) do { \
+    (x) = (x) + dst_off_x; \
+    (y) = (y) + dst_off_y; \
+} while (0)
+
+#define CW_OFFSET_XY_SRC(x, y) do { \
+    (x) = (x) + src_off_x; \
+    (y) = (y) + src_off_y; \
+} while (0)
+
+/* cw.c */
+extern _X_EXPORT DrawablePtr
+cwGetBackingDrawable(DrawablePtr pDrawable, int *x_off, int *y_off);
+
+/* cw_render.c */
+
+extern _X_EXPORT void
+cwInitializeRender (ScreenPtr pScreen);
+
+extern _X_EXPORT void
+cwFiniRender (ScreenPtr pScreen);
+
+/* cw.c */
+
+extern _X_EXPORT void
+miInitializeCompositeWrapper(ScreenPtr pScreen);
diff --git a/miext/cw/cw_ops.c b/miext/cw/cw_ops.c
new file mode 100644
index 0000000..9ae56cb
--- /dev/null
+++ b/miext/cw/cw_ops.c
@@ -0,0 +1,478 @@
+/*
+ * 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 <stdlib.h>
+
+#include "gcstruct.h"
+#include "pixmapstr.h"
+#include "cw.h"
+#include "mi.h"
+
+#define SETUP_BACKING_DST(_pDst, _pGC) \
+    cwGCPtr pGCPrivate = getCwGC (_pGC); \
+    int dst_off_x, dst_off_y; \
+    DrawablePtr pBackingDst = cwGetBackingDrawable(pDst, &dst_off_x, \
+	&dst_off_y); \
+    GCPtr pBackingGC = pGCPrivate->pBackingGC ? pGCPrivate->pBackingGC : _pGC
+
+#define SETUP_BACKING_SRC(pSrc, pGC) \
+    int src_off_x, src_off_y; \
+    DrawablePtr pBackingSrc = cwGetBackingDrawable(pSrc, &src_off_x, \
+	&src_off_y)
+
+#define PROLOGUE(pGC) do { \
+    if (pBackingGC->serialNumber != pBackingDst->serialNumber) { \
+	ValidateGC(pBackingDst, pBackingGC); \
+    } \
+    pGC->funcs = pGCPrivate->wrapFuncs;\
+    pGC->ops = pGCPrivate->wrapOps;\
+} while (0)
+
+#define EPILOGUE(pGC) do { \
+    pGCPrivate->wrapFuncs = (pGC)->funcs; \
+    pGCPrivate->wrapOps = (pGC)->ops; \
+    (pGC)->funcs = &cwGCFuncs; \
+    (pGC)->ops = &cwGCOps; \
+} while (0)
+
+extern GCFuncs cwGCFuncs;
+
+/*
+ * GC ops -- wrap each GC operation with our own function
+ */
+
+static void cwFillSpans(DrawablePtr pDst, GCPtr pGC, int nInit,
+			DDXPointPtr pptInit, int *pwidthInit, int fSorted);
+static void cwSetSpans(DrawablePtr pDst, GCPtr pGC, char *psrc,
+		       DDXPointPtr ppt, int *pwidth, int nspans, int fSorted);
+static void cwPutImage(DrawablePtr pDst, GCPtr pGC, int depth,
+		       int x, int y, int w, int h, int leftPad, int format,
+		       char *pBits);
+static RegionPtr cwCopyArea(DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,
+			    int srcx, int srcy, int w, int h,
+			    int dstx, int dsty);
+static RegionPtr cwCopyPlane(DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC,
+			     int srcx, int srcy, int w, int h,
+			     int dstx, int dsty, unsigned long plane);
+static void cwPolyPoint(DrawablePtr pDst, GCPtr pGC, int mode, int npt,
+			xPoint *pptInit);
+static void cwPolylines(DrawablePtr pDst, GCPtr pGC, int mode, int npt,
+			DDXPointPtr pptInit);
+static void cwPolySegment(DrawablePtr pDst, GCPtr pGC, int nseg,
+			  xSegment *pSegs);
+static void cwPolyRectangle(DrawablePtr pDst, GCPtr pGC,
+			    int nrects, xRectangle *pRects);
+static void cwPolyArc(DrawablePtr pDst, GCPtr pGC, int narcs, xArc *parcs);
+static void cwFillPolygon(DrawablePtr pDst, GCPtr pGC, int shape, int mode,
+			  int count, DDXPointPtr pPts);
+static void cwPolyFillRect(DrawablePtr pDst, GCPtr pGC,
+			   int nrectFill, xRectangle *prectInit);
+static void cwPolyFillArc(DrawablePtr pDst, GCPtr pGC,
+			  int narcs, xArc *parcs);
+static int cwPolyText8(DrawablePtr pDrawable, GCPtr pGC, int x, int y,
+		       int count, char *chars);
+static int cwPolyText16(DrawablePtr pDst, GCPtr pGC, int x, int y,
+			int count, unsigned short *chars);
+static void cwImageText8(DrawablePtr pDst, GCPtr pGC, int x, int y,
+			 int count, char *chars);
+static void cwImageText16(DrawablePtr pDst, GCPtr pGC, int x, int y,
+			  int count, unsigned short *chars);
+static void cwImageGlyphBlt(DrawablePtr pDst, GCPtr pGC, int x, int y,
+			    unsigned int nglyph, CharInfoPtr *ppci,
+			    pointer pglyphBase);
+static void cwPolyGlyphBlt(DrawablePtr pDst, GCPtr pGC, int x, int y,
+			   unsigned int nglyph, CharInfoPtr *ppci,
+			   pointer pglyphBase);
+static void cwPushPixels(GCPtr pGC, PixmapPtr pBitMap, DrawablePtr pDst,
+			 int w, int h, int x, int y);
+
+GCOps cwGCOps = {
+	cwFillSpans,
+	cwSetSpans,
+	cwPutImage,
+	cwCopyArea,
+	cwCopyPlane,
+	cwPolyPoint,
+	cwPolylines,
+	cwPolySegment,
+	cwPolyRectangle,
+	cwPolyArc,
+	cwFillPolygon,
+	cwPolyFillRect,
+	cwPolyFillArc,
+	cwPolyText8,
+	cwPolyText16,
+	cwImageText8,
+	cwImageText16,
+	cwImageGlyphBlt,
+	cwPolyGlyphBlt,
+	cwPushPixels
+};
+
+static void
+cwFillSpans(DrawablePtr pDst, GCPtr pGC, int nspans, DDXPointPtr ppt,
+	    int *pwidth, int fSorted)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XYPOINTS(ppt, nspans);
+
+    (*pBackingGC->ops->FillSpans)(pBackingDst, pBackingGC, nspans, ppt,
+				  pwidth, fSorted);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwSetSpans(DrawablePtr pDst, GCPtr pGC, char *psrc, DDXPointPtr ppt,
+	   int *pwidth, int nspans, int fSorted)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XYPOINTS(ppt, nspans);
+
+    (*pBackingGC->ops->SetSpans)(pBackingDst, pBackingGC, psrc, ppt, pwidth,
+				 nspans, fSorted);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwPutImage(DrawablePtr pDst, GCPtr pGC, int depth, int x, int y, int w, int h,
+	   int leftPad, int format, char *pBits)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XY_DST(x, y);
+
+    (*pBackingGC->ops->PutImage)(pBackingDst, pBackingGC, depth, x, y, w, h,
+				 leftPad, format, pBits);
+
+    EPILOGUE(pGC);
+}
+
+static RegionPtr
+cwCopyArea(DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC, int srcx, int srcy,
+	   int w, int h, int dstx, int dsty)
+{
+    int		odstx, odsty;
+    int		osrcx, osrcy;
+    SETUP_BACKING_DST(pDst, pGC);
+    SETUP_BACKING_SRC(pSrc, pGC);
+
+    PROLOGUE(pGC);
+
+    odstx = dstx;
+    odsty = dsty;
+    osrcx = srcx;
+    osrcy = srcy;
+    CW_OFFSET_XY_DST(dstx, dsty);
+    CW_OFFSET_XY_SRC(srcx, srcy);
+
+    (*pBackingGC->ops->CopyArea)(pBackingSrc, pBackingDst,
+				 pBackingGC, srcx, srcy, w, h,
+				 dstx, dsty);
+    
+    EPILOGUE(pGC);
+
+    return miHandleExposures(pSrc, pDst, pGC,
+			     osrcx, osrcy, w, h,
+			     odstx, odsty, 0);
+}
+
+static RegionPtr
+cwCopyPlane(DrawablePtr pSrc, DrawablePtr pDst, GCPtr pGC, int srcx, int srcy,
+	    int w, int h, int dstx, int dsty, unsigned long plane)
+{
+    int		odstx, odsty;
+    int		osrcx, osrcy;
+    SETUP_BACKING_DST(pDst, pGC);
+    SETUP_BACKING_SRC(pSrc, pGC);
+
+    PROLOGUE(pGC);
+
+    odstx = dstx;
+    odsty = dsty;
+    osrcx = srcx;
+    osrcy = srcy;
+    CW_OFFSET_XY_DST(dstx, dsty);
+    CW_OFFSET_XY_SRC(srcx, srcy);
+
+    (*pBackingGC->ops->CopyPlane)(pBackingSrc, pBackingDst,
+				  pBackingGC, srcx, srcy, w, h,
+				  dstx, dsty, plane);
+
+    EPILOGUE(pGC);
+
+    return miHandleExposures(pSrc, pDst, pGC,
+			     osrcx, osrcy, w, h,
+			     odstx, odsty, plane);
+}
+
+static void
+cwPolyPoint(DrawablePtr pDst, GCPtr pGC, int mode, int npt, xPoint *ppt)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    if (mode == CoordModeOrigin)
+	CW_OFFSET_XYPOINTS(ppt, npt);
+    else
+	CW_OFFSET_XYPOINTS(ppt, 1);
+
+    (*pBackingGC->ops->PolyPoint)(pBackingDst, pBackingGC, mode, npt, ppt);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwPolylines(DrawablePtr pDst, GCPtr pGC, int mode, int npt, DDXPointPtr ppt)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    if (mode == CoordModeOrigin)
+	CW_OFFSET_XYPOINTS(ppt, npt);
+    else
+	CW_OFFSET_XYPOINTS(ppt, 1);
+
+    (*pBackingGC->ops->Polylines)(pBackingDst, pBackingGC, mode, npt, ppt);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwPolySegment(DrawablePtr pDst, GCPtr pGC, int nseg, xSegment *pSegs)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XYPOINTS(pSegs, nseg * 2);
+
+    (*pBackingGC->ops->PolySegment)(pBackingDst, pBackingGC, nseg, pSegs);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwPolyRectangle(DrawablePtr pDst, GCPtr pGC, int nrects, xRectangle *pRects)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_RECTS(pRects, nrects);
+
+    (*pBackingGC->ops->PolyRectangle)(pBackingDst, pBackingGC, nrects, pRects);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwPolyArc(DrawablePtr pDst, GCPtr pGC, int narcs, xArc *pArcs)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_RECTS(pArcs, narcs);
+
+    (*pBackingGC->ops->PolyArc)(pBackingDst, pBackingGC, narcs, pArcs);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwFillPolygon(DrawablePtr pDst, GCPtr pGC, int shape, int mode, int npt,
+	      DDXPointPtr ppt)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    if (mode == CoordModeOrigin)
+	CW_OFFSET_XYPOINTS(ppt, npt);
+    else
+	CW_OFFSET_XYPOINTS(ppt, 1);
+
+    (*pBackingGC->ops->FillPolygon)(pBackingDst, pBackingGC, shape, mode, npt,
+				    ppt);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwPolyFillRect(DrawablePtr pDst, GCPtr pGC, int nrects, xRectangle *pRects)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_RECTS(pRects, nrects);
+
+    (*pBackingGC->ops->PolyFillRect)(pBackingDst, pBackingGC, nrects, pRects);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwPolyFillArc(DrawablePtr pDst, GCPtr pGC, int narcs, xArc *parcs)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_RECTS(parcs, narcs);
+
+    (*pBackingGC->ops->PolyFillArc)(pBackingDst, pBackingGC, narcs, parcs);
+
+    EPILOGUE(pGC);
+}
+
+static int
+cwPolyText8(DrawablePtr pDst, GCPtr pGC, int x, int y, int count, char *chars)
+{
+    int result;
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XY_DST(x, y);
+
+    result = (*pBackingGC->ops->PolyText8)(pBackingDst, pBackingGC, x, y,
+					   count, chars);
+
+    EPILOGUE(pGC);
+
+    return result;
+}
+
+static int
+cwPolyText16(DrawablePtr pDst, GCPtr pGC, int x, int y, int count,
+	     unsigned short *chars)
+{
+    int result;
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XY_DST(x, y);
+
+    result = (*pBackingGC->ops->PolyText16)(pBackingDst, pBackingGC, x, y,
+					    count, chars);
+
+    EPILOGUE(pGC);
+    return result;
+}
+
+static void
+cwImageText8(DrawablePtr pDst, GCPtr pGC, int x, int y, int count, char *chars)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XY_DST(x, y);
+
+    (*pBackingGC->ops->ImageText8)(pBackingDst, pBackingGC, x, y, count,
+				   chars);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwImageText16(DrawablePtr pDst, GCPtr pGC, int x, int y, int count,
+	     unsigned short *chars)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XY_DST(x, y);
+
+    (*pBackingGC->ops->ImageText16)(pBackingDst, pBackingGC, x, y, count,
+				    chars);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwImageGlyphBlt(DrawablePtr pDst, GCPtr pGC, int x, int y, unsigned int nglyph,
+		CharInfoPtr *ppci, pointer pglyphBase)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XY_DST(x, y);
+
+    (*pBackingGC->ops->ImageGlyphBlt)(pBackingDst, pBackingGC, x, y, nglyph,
+				      ppci, pglyphBase);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwPolyGlyphBlt(DrawablePtr pDst, GCPtr pGC, int x, int y, unsigned int nglyph,
+	       CharInfoPtr *ppci, pointer pglyphBase)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XY_DST(x, y);
+
+    (*pBackingGC->ops->PolyGlyphBlt)(pBackingDst, pBackingGC, x, y, nglyph,
+				      ppci, pglyphBase);
+
+    EPILOGUE(pGC);
+}
+
+static void
+cwPushPixels(GCPtr pGC, PixmapPtr pBitMap, DrawablePtr pDst, int w, int h,
+	     int x, int y)
+{
+    SETUP_BACKING_DST(pDst, pGC);
+
+    PROLOGUE(pGC);
+
+    CW_OFFSET_XY_DST(x, y);
+
+    (*pBackingGC->ops->PushPixels)(pBackingGC, pBitMap, pBackingDst, w, h,
+				   x, y);
+
+    EPILOGUE(pGC);
+}
+
diff --git a/miext/cw/cw_render.c b/miext/cw/cw_render.c
new file mode 100644
index 0000000..165c44f
--- /dev/null
+++ b/miext/cw/cw_render.c
@@ -0,0 +1,469 @@
+/*
+ * 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 cwPsDecl(pScreen)	\
+    PictureScreenPtr	ps = GetPictureScreen (pScreen);	\
+    cwScreenPtr		pCwScreen = getCwScreen (pScreen)
+
+#define cwPicturePrivate					\
+    cwPicturePtr    pPicturePrivate = getCwPicture(pPicture)
+
+#define cwSrcPictureDecl							\
+    int		    src_picture_x_off, src_picture_y_off;			\
+    PicturePtr	    pBackingSrcPicture = cwGetBackingPicture(pSrcPicture,	\
+							     &src_picture_x_off,\
+							     &src_picture_y_off)
+
+#define cwDstPictureDecl							\
+    int		    dst_picture_x_off, dst_picture_y_off;			\
+    PicturePtr	    pBackingDstPicture = cwGetBackingPicture(pDstPicture,	\
+							     &dst_picture_x_off,\
+							     &dst_picture_y_off)
+
+#define cwMskPictureDecl							\
+    int		    msk_picture_x_off = 0, msk_picture_y_off = 0;		\
+    PicturePtr	    pBackingMskPicture = (!pMskPicture ? 0 :	    		\
+					  cwGetBackingPicture(pMskPicture,	\
+							      &msk_picture_x_off,\
+							      &msk_picture_y_off))
+
+#define cwPsUnwrap(elt) {	\
+    ps->elt = pCwScreen->elt;	\
+}
+
+#define cwPsWrap(elt,func) {	\
+    pCwScreen->elt = ps->elt;	\
+    ps->elt = func;		\
+}
+
+static cwPicturePtr
+cwCreatePicturePrivate (PicturePtr pPicture)
+{
+    WindowPtr	    pWindow = (WindowPtr) pPicture->pDrawable;
+    PixmapPtr	    pPixmap = getCwPixmap (pWindow);
+    int		    error;
+    cwPicturePtr    pPicturePrivate;
+
+    pPicturePrivate = malloc(sizeof (cwPictureRec));
+    if (!pPicturePrivate)
+	return NULL;
+    
+    pPicturePrivate->pBackingPicture = CreatePicture (0, &pPixmap->drawable, 
+						      pPicture->pFormat,
+						      0, 0, serverClient,
+						      &error);
+    if (!pPicturePrivate->pBackingPicture)
+    {
+	free(pPicturePrivate);
+	return NULL;
+    }
+
+    /*
+     * Ensure that this serial number does not match the window's
+     */
+    pPicturePrivate->serialNumber = pPixmap->drawable.serialNumber;
+    pPicturePrivate->stateChanges = (1 << (CPLastBit + 1)) - 1;
+    
+    setCwPicture(pPicture, pPicturePrivate);
+
+    return pPicturePrivate;
+}
+
+static void
+cwDestroyPicturePrivate (PicturePtr pPicture)
+{
+    cwPicturePrivate;
+
+    if (pPicturePrivate)
+    {
+	if (pPicturePrivate->pBackingPicture)
+	    FreePicture (pPicturePrivate->pBackingPicture, 0);
+	free(pPicturePrivate);
+	setCwPicture(pPicture, NULL);
+    }
+}
+
+static PicturePtr
+cwGetBackingPicture (PicturePtr pPicture, int *x_off, int *y_off)
+{
+    cwPicturePrivate;
+
+    if (pPicturePrivate)
+    {
+	DrawablePtr pDrawable = pPicture->pDrawable;
+	WindowPtr   pWindow = (WindowPtr) pDrawable;
+	PixmapPtr   pPixmap = getCwPixmap (pWindow);
+
+	*x_off = pDrawable->x - pPixmap->screen_x;
+	*y_off = pDrawable->y - pPixmap->screen_y;
+
+	return pPicturePrivate->pBackingPicture;
+    }
+    else
+    {
+	*x_off = *y_off = 0;
+	return pPicture;
+    }
+}
+    
+static void
+cwDestroyPicture (PicturePtr pPicture)
+{
+    ScreenPtr		pScreen = pPicture->pDrawable->pScreen;
+    cwPsDecl(pScreen);
+    
+    cwPsUnwrap(DestroyPicture);
+    cwDestroyPicturePrivate (pPicture);
+    (*ps->DestroyPicture) (pPicture);
+    cwPsWrap(DestroyPicture, cwDestroyPicture);
+}
+
+static void
+cwChangePicture (PicturePtr pPicture, Mask mask)
+{
+    ScreenPtr		pScreen = pPicture->pDrawable->pScreen;
+    cwPsDecl(pScreen);
+    cwPicturePtr	pPicturePrivate = getCwPicture(pPicture);
+    
+    cwPsUnwrap(ChangePicture);
+    (*ps->ChangePicture) (pPicture, mask);
+    if (pPicturePrivate)
+	pPicturePrivate->stateChanges |= mask;
+    cwPsWrap(ChangePicture, cwChangePicture);
+}
+
+
+static void
+cwValidatePicture (PicturePtr pPicture,
+		   Mask       mask)
+{
+    DrawablePtr		pDrawable = pPicture->pDrawable;
+    ScreenPtr		pScreen = pDrawable->pScreen;
+    cwPsDecl(pScreen);
+    cwPicturePrivate;
+    
+    cwPsUnwrap(ValidatePicture);
+
+    /*
+     * Must call ValidatePicture to ensure pPicture->pCompositeClip is valid
+     */
+    (*ps->ValidatePicture) (pPicture, mask);
+    
+    if (!cwDrawableIsRedirWindow (pDrawable))
+    {
+	if (pPicturePrivate)
+	    cwDestroyPicturePrivate (pPicture);
+    }
+    else
+    {
+	PicturePtr  pBackingPicture;
+	DrawablePtr pBackingDrawable;
+	int	    x_off, y_off;
+	
+	pBackingDrawable = cwGetBackingDrawable(pDrawable, &x_off, &y_off);
+
+	if (pPicturePrivate && 
+	    pPicturePrivate->pBackingPicture->pDrawable != pBackingDrawable)
+	{
+	    cwDestroyPicturePrivate (pPicture);
+	    pPicturePrivate = 0;
+	}
+
+	if (!pPicturePrivate)
+	{
+	    pPicturePrivate = cwCreatePicturePrivate (pPicture);
+	    if (!pPicturePrivate)
+	    {
+		cwPsWrap(ValidatePicture, cwValidatePicture);
+		return;
+	    }
+	}
+
+	pBackingPicture = pPicturePrivate->pBackingPicture;
+
+	/*
+	 * Always copy transform and filters because there's no
+	 * indication of when they've changed
+	 */
+	SetPictureTransform(pBackingPicture, pPicture->transform);
+	
+	if (pBackingPicture->filter != pPicture->filter ||
+	    pPicture->filter_nparams > 0)
+	{
+	    char    *filter = PictureGetFilterName (pPicture->filter);
+	    
+	    SetPictureFilter(pBackingPicture,
+			     filter, strlen (filter),
+			     pPicture->filter_params,
+			     pPicture->filter_nparams);
+	}
+
+	pPicturePrivate->stateChanges |= mask;
+
+	if (pPicturePrivate->serialNumber != pDrawable->serialNumber ||
+	    (pPicturePrivate->stateChanges & (CPClipXOrigin|CPClipYOrigin|CPClipMask)))
+	{
+	    SetPictureClipRegion (pBackingPicture, 
+				  x_off - pDrawable->x,
+				  y_off - pDrawable->y,
+				  pPicture->pCompositeClip);
+    
+	    pPicturePrivate->serialNumber = pDrawable->serialNumber;
+	    pPicturePrivate->stateChanges &= ~(CPClipXOrigin | CPClipYOrigin | CPClipMask);
+	}
+
+	CopyPicture(pPicture, pPicturePrivate->stateChanges, pBackingPicture);
+
+	ValidatePicture (pBackingPicture);
+    }
+    cwPsWrap(ValidatePicture, cwValidatePicture);
+}
+
+static void
+cwComposite (CARD8	op,
+	     PicturePtr pSrcPicture,
+	     PicturePtr pMskPicture,
+	     PicturePtr pDstPicture,
+	     INT16	xSrc,
+	     INT16	ySrc,
+	     INT16	xMsk,
+	     INT16	yMsk,
+	     INT16	xDst,
+	     INT16	yDst,
+	     CARD16	width,
+	     CARD16	height)
+{
+    ScreenPtr	pScreen = pDstPicture->pDrawable->pScreen;
+    cwPsDecl(pScreen);
+    cwSrcPictureDecl;
+    cwMskPictureDecl;
+    cwDstPictureDecl;
+    
+    cwPsUnwrap(Composite);
+    (*ps->Composite) (op, pBackingSrcPicture, pBackingMskPicture, pBackingDstPicture,
+		      xSrc + src_picture_x_off, ySrc + src_picture_y_off,
+		      xMsk + msk_picture_x_off, yMsk + msk_picture_y_off,
+		      xDst + dst_picture_x_off, yDst + dst_picture_y_off,
+		      width, height);
+    cwPsWrap(Composite, cwComposite);
+}
+
+static void
+cwCompositeRects (CARD8		op,
+		  PicturePtr	pDstPicture,
+		  xRenderColor  *color,
+		  int		nRect,
+		  xRectangle	*rects)
+{
+    ScreenPtr	pScreen = pDstPicture->pDrawable->pScreen;
+    cwPsDecl(pScreen);
+    cwDstPictureDecl;
+    int i;
+    
+    cwPsUnwrap(CompositeRects);
+    for (i = 0; i < nRect; i++)
+    {
+	rects[i].x += dst_picture_x_off;
+	rects[i].y += dst_picture_y_off;
+    }
+    (*ps->CompositeRects) (op, pBackingDstPicture, color, nRect, rects);
+    cwPsWrap(CompositeRects, cwCompositeRects);
+}
+
+static void
+cwTrapezoids (CARD8	    op,
+	      PicturePtr    pSrcPicture,
+	      PicturePtr    pDstPicture,
+	      PictFormatPtr maskFormat,
+	      INT16	    xSrc,
+	      INT16	    ySrc,
+	      int	    ntrap,
+	      xTrapezoid    *traps)
+{
+    ScreenPtr	pScreen = pDstPicture->pDrawable->pScreen;
+    cwPsDecl(pScreen);
+    cwSrcPictureDecl;
+    cwDstPictureDecl;
+    int i;
+    
+    cwPsUnwrap(Trapezoids);
+    if (dst_picture_x_off || dst_picture_y_off) {
+	for (i = 0; i < ntrap; i++)
+	{
+	    traps[i].top += dst_picture_y_off << 16;
+	    traps[i].bottom += dst_picture_y_off << 16;
+	    traps[i].left.p1.x += dst_picture_x_off << 16;
+	    traps[i].left.p1.y += dst_picture_y_off << 16;
+	    traps[i].left.p2.x += dst_picture_x_off << 16;
+	    traps[i].left.p2.y += dst_picture_y_off << 16;
+	    traps[i].right.p1.x += dst_picture_x_off << 16;
+	    traps[i].right.p1.y += dst_picture_y_off << 16;
+	    traps[i].right.p2.x += dst_picture_x_off << 16;
+	    traps[i].right.p2.y += dst_picture_y_off << 16;
+	}
+    }
+    (*ps->Trapezoids) (op, pBackingSrcPicture, pBackingDstPicture, maskFormat,
+		       xSrc + src_picture_x_off, ySrc + src_picture_y_off,
+		       ntrap, traps);
+    cwPsWrap(Trapezoids, cwTrapezoids);
+}
+
+static void
+cwTriangles (CARD8	    op,
+	     PicturePtr	    pSrcPicture,
+	     PicturePtr	    pDstPicture,
+	     PictFormatPtr  maskFormat,
+	     INT16	    xSrc,
+	     INT16	    ySrc,
+	     int	    ntri,
+	     xTriangle	   *tris)
+{
+    ScreenPtr	pScreen = pDstPicture->pDrawable->pScreen;
+    cwPsDecl(pScreen);
+    cwSrcPictureDecl;
+    cwDstPictureDecl;
+    int i;
+    
+    cwPsUnwrap(Triangles);
+    if (dst_picture_x_off || dst_picture_y_off) {
+	for (i = 0; i < ntri; i++)
+	{
+	    tris[i].p1.x += dst_picture_x_off << 16;
+	    tris[i].p1.y += dst_picture_y_off << 16;
+	    tris[i].p2.x += dst_picture_x_off << 16;
+	    tris[i].p2.y += dst_picture_y_off << 16;
+	    tris[i].p3.x += dst_picture_x_off << 16;
+	    tris[i].p3.y += dst_picture_y_off << 16;
+	}
+    }
+    (*ps->Triangles) (op, pBackingSrcPicture, pBackingDstPicture, maskFormat,
+		      xSrc + src_picture_x_off, ySrc + src_picture_y_off,
+		      ntri, tris);
+    cwPsWrap(Triangles, cwTriangles);
+}
+
+static void
+cwTriStrip (CARD8	    op,
+	    PicturePtr	    pSrcPicture,
+	    PicturePtr	    pDstPicture,
+	    PictFormatPtr   maskFormat,
+	    INT16	    xSrc,
+	    INT16	    ySrc,
+	    int		    npoint,
+	    xPointFixed    *points)
+{
+    ScreenPtr	pScreen = pDstPicture->pDrawable->pScreen;
+    cwPsDecl(pScreen);
+    cwSrcPictureDecl;
+    cwDstPictureDecl;
+    int i;
+
+    cwPsUnwrap(TriStrip);
+    if (dst_picture_x_off || dst_picture_y_off) {
+	for (i = 0; i < npoint; i++)
+	{
+	    points[i].x += dst_picture_x_off << 16;
+	    points[i].y += dst_picture_y_off << 16;
+	}
+    }
+    (*ps->TriStrip) (op, pBackingSrcPicture, pBackingDstPicture, maskFormat,
+		     xSrc + src_picture_x_off, ySrc + src_picture_y_off,
+		     npoint, points);
+    cwPsWrap(TriStrip, cwTriStrip);
+}
+
+static void
+cwTriFan (CARD8		 op,
+	  PicturePtr	 pSrcPicture,
+	  PicturePtr	 pDstPicture,
+	  PictFormatPtr  maskFormat,
+	  INT16		 xSrc,
+	  INT16		 ySrc,
+	  int		 npoint,
+	  xPointFixed   *points)
+{
+    ScreenPtr	pScreen = pDstPicture->pDrawable->pScreen;
+    cwPsDecl(pScreen);
+    cwSrcPictureDecl;
+    cwDstPictureDecl;
+    int i;
+
+    cwPsUnwrap(TriFan);
+    if (dst_picture_x_off || dst_picture_y_off) {
+	for (i = 0; i < npoint; i++)
+	{
+	    points[i].x += dst_picture_x_off << 16;
+	    points[i].y += dst_picture_y_off << 16;
+	}
+    }
+    (*ps->TriFan) (op, pBackingSrcPicture, pBackingDstPicture, maskFormat,
+		   xSrc + src_picture_x_off, ySrc + src_picture_y_off,
+		   npoint, points);
+    cwPsWrap(TriFan, cwTriFan);
+}
+
+void
+cwInitializeRender (ScreenPtr pScreen)
+{
+    cwPsDecl (pScreen);
+
+    cwPsWrap(DestroyPicture, cwDestroyPicture);
+    cwPsWrap(ChangePicture, cwChangePicture);
+    cwPsWrap(ValidatePicture, cwValidatePicture);
+    cwPsWrap(Composite, cwComposite);
+    cwPsWrap(CompositeRects, cwCompositeRects);
+    cwPsWrap(Trapezoids, cwTrapezoids);
+    cwPsWrap(Triangles, cwTriangles);
+    cwPsWrap(TriStrip, cwTriStrip);
+    cwPsWrap(TriFan, cwTriFan);
+    /* There is no need to wrap AddTraps as far as we can tell.  AddTraps can
+     * only be done on alpha-only pictures, and we won't be getting
+     * alpha-only window pictures, so there's no need to translate.
+     */
+}
+
+void
+cwFiniRender (ScreenPtr pScreen)
+{
+    cwPsDecl (pScreen);
+
+    cwPsUnwrap(DestroyPicture);
+    cwPsUnwrap(ChangePicture);
+    cwPsUnwrap(ValidatePicture);
+    cwPsUnwrap(Composite);
+    cwPsUnwrap(CompositeRects);
+    cwPsUnwrap(Trapezoids);
+    cwPsUnwrap(Triangles);
+    cwPsUnwrap(TriStrip);
+    cwPsUnwrap(TriFan);
+}
+