Merge topic 'egl-query-error'

ec802f72 Query EGL error on vtkEGLRenderWindow::MakeCurrent

Acked-by: Kitware Robot <kwrobot@kitware.com>
Acked-by: Andrew Bauer <andy.bauer@kitware.com>
Acked-by: Mathieu Westphal <mathieu.westphal@kitware.com>
Reviewed-by: Ken Martin <ken.martin@kitware.com>
Merge-request: !1364

Rendering/OpenGL2/vtkEGLRenderWindow.cxx

@@ -513,7 +513,7 @@ void vtkEGLRenderWindow::MakeCurrent()
     {
     if (eglMakeCurrent(impl->Display, impl->Surface, impl->Surface, impl->Context) == EGL_FALSE)
       {
-      vtkErrorMacro("Unable to eglMakeCurrent");
+      vtkWarningMacro("Unable to eglMakeCurrent: " << eglGetError());
       return;
       }
     }