From ad4def8e521c449628f6e69b13a7eca63b152793 Mon Sep 17 00:00:00 2001
From: Dana Jansens <danakj@orodu.net>
Date: Tue, 19 Jun 2007 21:52:44 +0000
Subject: [PATCH] check for damage and render extensions if going to use
 composite. require them for it. also include the cflags/libs. and only run
 the xcomposite stuff so far when the server supports it

---
 Makefile.am          |  6 ++++++
 configure.ac         | 30 +++++++++++++++++++++++++-----
 openbox/extensions.h |  5 +++++
 openbox/screen.c     | 10 ++++++----
 4 files changed, 42 insertions(+), 9 deletions(-)

diff --git a/Makefile.am b/Makefile.am
index 6fa3a8e6..73a05eee 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -118,6 +118,9 @@ openbox_openbox_CPPFLAGS = \
 	$(XRANDR_CFLAGS) \
 	$(XSHAPE_CFLAGS) \
 	$(XSYNC_CFLAGS) \
+	$(XRENDER_CFLAGS) \
+	$(XDAMAGE_CFLAGS) \
+	$(XCOMPOSITE_CFLAGS) \
 	$(X_CFLAGS) \
 	$(XCURSOR_CFLAGS) \
 	$(SM_CFLAGS) \
@@ -137,6 +140,9 @@ openbox_openbox_LDADD = \
 	$(XSHAPE_LIBS) \
 	$(XSYNC_LIBS) \
 	$(GLIB_LIBS) \
+	$(XRENDER_LIBS) \
+	$(XDAMAGE_LIBS) \
+	$(XCOMPOSITE_LIBS) \
 	$(X_LIBS) \
 	$(XCURSOR_LIBS) \
 	$(LIBSN_LIBS) \
diff --git a/configure.ac b/configure.ac
index e62f1be3..795b7742 100644
--- a/configure.ac
+++ b/configure.ac
@@ -146,12 +146,32 @@ AC_ARG_ENABLE(xcomposite,
 )
 
 if test "$enable_xcomposite" = yes; then
-PKG_CHECK_MODULES(XCOMPOSITE, [xcomposite],
+PKG_CHECK_MODULES(XRENDER, [xrender],
   [
-    AC_DEFINE(USE_XCOMPOSITE, [1], [Use X Composite library])
-    AC_SUBST(XCOMPOSITE_CFLAGS)
-    AC_SUBST(XCOMPOSITE_LIBS)
-    xcomposite_found=yes
+    AC_DEFINE(USE_XRENDER, [1], [Use X Render library])
+    AC_SUBST(XRENDER_CFLAGS)
+    AC_SUBST(XRENDER_LIBS)
+    PKG_CHECK_MODULES(XDAMAGE, [xdamage],
+      [
+        AC_DEFINE(USE_XDAMAGE, [1], [Use X Damage library])
+        AC_SUBST(XDAMAGE_CFLAGS)
+        AC_SUBST(XDAMAGE_LIBS)
+        PKG_CHECK_MODULES(XCOMPOSITE, [xcomposite],
+          [ 
+            AC_DEFINE(USE_XCOMPOSITE, [1], [Use X Composite library])	
+            AC_SUBST(XCOMPOSITE_CFLAGS)	   
+            AC_SUBST(XCOMPOSITE_LIBS)
+            xcomposite_found=yes
+          ],
+          [
+            xcomposite_found=no
+          ]
+        )
+      ],
+      [
+        xcomposite_found=no
+      ]
+    )
   ],
   [
     xcomposite_found=no
diff --git a/openbox/extensions.h b/openbox/extensions.h
index 6a488a19..e1070e86 100644
--- a/openbox/extensions.h
+++ b/openbox/extensions.h
@@ -39,6 +39,11 @@
 #ifdef    SYNC
 #include <X11/extensions/sync.h>
 #endif
+#ifdef    USE_XCOMPOSITE
+#include <X11/extensions/Xcomposite.h>
+#include <X11/extensions/Xdamage.h>
+#include <X11/extensions/Xrender.h>
+#endif
 
 #include <glib.h>
 
diff --git a/openbox/screen.c b/openbox/screen.c
index d5a51941..1ef08075 100644
--- a/openbox/screen.c
+++ b/openbox/screen.c
@@ -365,10 +365,12 @@ void screen_startup(gboolean reconfig)
     }
 
 #ifdef USE_XCOMPOSITE
-    /* Redirect window contents to offscreen pixmaps */
-    XCompositeRedirectSubwindows(ob_display,
-                                 RootWindow(ob_display, ob_screen),
-                                 CompositeRedirectAutomatic);
+    if (extensions_comp) {
+        /* Redirect window contents to offscreen pixmaps */
+        XCompositeRedirectSubwindows(ob_display,
+                                     RootWindow(ob_display, ob_screen),
+                                     CompositeRedirectAutomatic);
+    }
 #endif
 
     /* get the initial size */
-- 
2.39.2