[runSofa] WIP batchGUI is still not working as it should on some OS.

applications/sofa/gui/qt/BatchGUI.cpp

@@ -52,8 +52,8 @@ BatchGUI::~BatchGUI()
 int BatchGUI::mainLoop()
 {
     int argc=1;
-    char* argv[1]={"nothing"};
-    QGuiApplication a(argc, (&argv[0]));
+    const char* argv[1]={"batchGUI"};
+    QGuiApplication a(argc, const_cast<char**>((&argv[0])));
 
     QSurfaceFormat surfaceFormat;
     surfaceFormat.setMajorVersion(4);
@@ -62,14 +62,21 @@ int BatchGUI::mainLoop()
     QOpenGLContext openGLContext;
     openGLContext.setFormat(surfaceFormat);
     openGLContext.create();
-    if(!openGLContext.isValid()) return -1;
+    if(openGLContext.isValid()){
+        QOffscreenSurface surface;
+        surface.setFormat(surfaceFormat);
+        surface.create();
+        if(surface.isValid()){
+            openGLContext.makeCurrent(&surface);
+        }else {
+            msg_warning("BatchGUI") << "Unable to get a valid openGL Surface. Some scenes may not work properly." ;
+        }
+    } else {
+        msg_warning("BatchGUI") << "Unable to get a valid openGL context. Some scenes may not work properly." ;
+    }
+
 
-    QOffscreenSurface surface;
-    surface.setFormat(surfaceFormat);
-    surface.create();
-    if(!surface.isValid()) return -2;
 
-    openGLContext.makeCurrent(&surface);
 
     if (groot)
     {