Merge pull request #69 from jnolan14/new_vgl_opts

Added test for egl support for runvgl in FV, adds flag to use if present

Author: jnolan14

surfa/vis/freeview.py

@@ -338,6 +338,8 @@ def _find_vgl():
     Locate the VGL wrapper if installed.
     """
     have_key = os.path.isfile('/etc/opt/VirtualGL/vgl_xauth_key')
+    # test for egl support
+    has_egl = os.path.isfile('/opt/VirtualGL/bin/eglinfo')
     vgl_path = shutil.which('vglrun')
     if vgl_path is None:
         vgl_path = shutil.which('vglrun', path='/usr/pubsw/bin')
@@ -346,6 +348,9 @@ def _find_vgl():
     islocal = any([os.environ.get('DISPLAY', '').endswith(string) for string in (':0', ':0.0')])
     no_glx = 'NV-GLX' in collect_output('xdpyinfo')[0]
     if not islocal and not no_glx:
+        # add flag for egl if supported
+        if has_egl:
+            vgl_path = vgl_path + ' -d egl'
         return vgl_path
     return None