From 98e9f187b3c5909c4d018c362726bbfae755f71b Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 31 Oct 2012 17:06:29 +0000
Subject: [PATCH] Added reading of the P3D_DEVICE env var for setting up the
 --device entry.

---
 applications/present3D/present3D.cpp | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/applications/present3D/present3D.cpp b/applications/present3D/present3D.cpp
index 3dfe08a66..85eb43b0e 100644
--- a/applications/present3D/present3D.cpp
+++ b/applications/present3D/present3D.cpp
@@ -402,6 +402,17 @@ int main( int argc, char **argv )
         doSetViewer = false;
     }
 
+    const char* p3dDevice = getenv("P3D_DEVICE");
+    if (p3dDevice)
+    {
+        osg::ref_ptr<osgGA::Device> dev = osgDB::readFile<osgGA::Device>(p3dDevice);
+        if (dev.valid())
+        {
+            viewer.addDevice(dev.get());
+        }
+    }
+
+
     std::string device;
     while (arguments.read("--device", device))
     {