[PATCH xf86-video-ati] Use local implementation of RegionDuplicate for older xserver

[Michel Dänzer]

From: Michel Dänzer <michel.daenzer at amd.com>

It was only added in xserver 1.15. Fixes build against older xserver.

Reported-by: Pali Rohár <pali.rohar at gmail.com>
Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
---
 configure.ac |  6 ++++++
 src/radeon.h | 19 +++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/configure.ac b/configure.ac
index 394f45a..8dc55d8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -137,6 +137,12 @@ else
 fi
 AM_CONDITIONAL(GLAMOR, test x$GLAMOR != xno)
 
+AC_CHECK_DECL(RegionDuplicate,
+	      [AC_DEFINE(HAVE_REGIONDUPLICATE, 1,
+	      [Have RegionDuplicate API])], [],
+	      [#include <xorg-server.h>
+	       #include <regionstr.h>])
+
 AC_CHECK_DECL(fbGlyphs,
 	      [AC_DEFINE(HAVE_FBGLYPHS, 1, [Have fbGlyphs API])], [],
 	      [#include <X11/Xmd.h>
diff --git a/src/radeon.h b/src/radeon.h
index f3a3e1c..590966f 100644
--- a/src/radeon.h
+++ b/src/radeon.h
@@ -96,6 +96,25 @@
 
 struct _SyncFence;
 
+#ifndef HAVE_REGIONDUPLICATE
+
+static inline RegionPtr
+RegionDuplicate(RegionPtr pOld)
+{
+    RegionPtr pNew;
+
+    pNew = RegionCreate(&pOld->extents, 0);
+    if (!pNew)
+	return NULL;
+    if (!RegionCopy(pNew, pOld)) {
+	RegionDestroy(pNew);
+	return NULL;
+    }
+    return pNew;
+}
+
+#endif
+
 #ifndef MAX
 #define MAX(a,b) ((a)>(b)?(a):(b))
 #endif
-- 
2.9.3