From 8d2b7d1758e3fcac520a18a0684c073f0ac62389 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Michel=20D=C3=A4nzer?= <michel.daenzer@amd.com>
Date: Mon, 6 Mar 2017 18:09:58 +0900
Subject: [PATCH] Use local implementation of RegionDuplicate for older xserver
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It was only added in xserver 1.15. Fixes build against older xserver.

Reported-by: Pali Rohár <pali.rohar@gmail.com>
(Ported from radeon commit 80cc892ee1ce54fad3cb7dd11bd9df18c359136f)
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
---
 configure.ac     |  6 ++++++
 src/amdgpu_drv.h | 19 +++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/configure.ac b/configure.ac
index 11dc285..00249a5 100644
--- a/configure.ac
+++ b/configure.ac
@@ -152,6 +152,12 @@ 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/amdgpu_drv.h b/src/amdgpu_drv.h
index ae5b6f9..0700dae 100644
--- a/src/amdgpu_drv.h
+++ b/src/amdgpu_drv.h
@@ -89,6 +89,25 @@
 
 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