Add support for X server 1.20.0.
In-server GLVND requires xorgGlxCreateVendor call from InitOutput.
DPMS functions were moved to another location and no longer need to be faked.
xserver120.patch is a copy of xserver119.patch with refreshed contexts.
diff --git a/unix/xserver120.patch b/unix/xserver120.patch
new file mode 100644
index 0000000..d859849
--- /dev/null
+++ b/unix/xserver120.patch
@@ -0,0 +1,82 @@
+Index: xserver/configure.ac
+===================================================================
+--- xserver.orig/configure.ac
++++ xserver/configure.ac
+@@ -74,6 +74,7 @@ dnl forcing an entire recompile.x
+ AC_CONFIG_HEADERS(include/version-config.h)
+
+ AM_PROG_AS
++AC_PROG_CXX
+ AC_PROG_LN_S
+ LT_PREREQ([2.2])
+ LT_INIT([disable-static win32-dll])
+@@ -1777,6 +1778,10 @@ if test "x$XVFB" = xyes; then
+ AC_SUBST([XVFB_SYS_LIBS])
+ fi
+
++dnl Xvnc DDX
++AC_SUBST([XVNC_CPPFLAGS], ["-DHAVE_DIX_CONFIG_H $XSERVER_CFLAGS"])
++AC_SUBST([XVNC_LIBS], ["$FB_LIB $FIXES_LIB $XEXT_LIB $CONFIG_LIB $DBE_LIB $RECORD_LIB $GLX_LIBS $RANDR_LIB $RENDER_LIB $DAMAGE_LIB $DRI3_LIB $PRESENT_LIB $MIEXT_SYNC_LIB $MIEXT_DAMAGE_LIB $MIEXT_SHADOW_LIB $XI_LIB $XKB_LIB $XKB_STUB_LIB $COMPOSITE_LIB $MAIN_LIB"])
++AC_SUBST([XVNC_SYS_LIBS], ["$GLX_SYS_LIBS"])
+
+ dnl Xnest DDX
+
+@@ -1812,6 +1817,8 @@ if test "x$XORG" = xauto; then
+ fi
+ AC_MSG_RESULT([$XORG])
+
++AC_DEFINE_UNQUOTED(XORG_VERSION_CURRENT, [$VENDOR_RELEASE], [Current Xorg version])
++
+ if test "x$XORG" = xyes; then
+ XORG_DDXINCS='-I$(top_srcdir)/hw/xfree86 -I$(top_srcdir)/hw/xfree86/include -I$(top_srcdir)/hw/xfree86/common'
+ XORG_OSINCS='-I$(top_srcdir)/hw/xfree86/os-support -I$(top_srcdir)/hw/xfree86/os-support/bus -I$(top_srcdir)/os'
+@@ -2029,7 +2036,6 @@ if test "x$XORG" = xyes; then
+ AC_DEFINE(XORG_SERVER, 1, [Building Xorg server])
+ AC_DEFINE(XORGSERVER, 1, [Building Xorg server])
+ AC_DEFINE(XFree86Server, 1, [Building XFree86 server])
+- AC_DEFINE_UNQUOTED(XORG_VERSION_CURRENT, [$VENDOR_RELEASE], [Current Xorg version])
+ AC_DEFINE(NEED_XF86_TYPES, 1, [Need XFree86 typedefs])
+ AC_DEFINE(NEED_XF86_PROTOTYPES, 1, [Need XFree86 helper functions])
+ AC_DEFINE(__XSERVERNAME__, "Xorg", [Name of X server])
+@@ -2565,6 +2571,7 @@ hw/dmx/Makefile
+ hw/dmx/man/Makefile
+ hw/vfb/Makefile
+ hw/vfb/man/Makefile
++hw/vnc/Makefile
+ hw/xnest/Makefile
+ hw/xnest/man/Makefile
+ hw/xwin/Makefile
+Index: xserver/hw/Makefile.am
+===================================================================
+--- xserver.orig/hw/Makefile.am
++++ xserver/hw/Makefile.am
+@@ -38,7 +38,8 @@ SUBDIRS = \
+ $(DMX_SUBDIRS) \
+ $(KDRIVE_SUBDIRS) \
+ $(XQUARTZ_SUBDIRS) \
+- $(XWAYLAND_SUBDIRS)
++ $(XWAYLAND_SUBDIRS) \
++ vnc
+
+ DIST_SUBDIRS = dmx xfree86 vfb xnest xwin xquartz kdrive xwayland
+
+Index: xserver/mi/miinitext.c
+===================================================================
+--- xserver.orig/mi/miinitext.c
++++ xserver/mi/miinitext.c
+@@ -107,8 +107,15 @@ SOFTWARE.
+ #include "os.h"
+ #include "globals.h"
+
++#ifdef TIGERVNC
++extern void vncExtensionInit(void);
++#endif
++
+ /* List of built-in (statically linked) extensions */
+ static const ExtensionModule staticExtensions[] = {
++#ifdef TIGERVNC
++ {vncExtensionInit, "VNC-EXTENSION", NULL},
++#endif
+ {GEExtensionInit, "Generic Event Extension", &noGEExtension},
+ {ShapeExtensionInit, "SHAPE", NULL},
+ #ifdef MITSHM