message: Prefer typename over class with templates
diff: @@ -16,7 +16,7 @@ namespace visionaray
  namespace detail
  {
  -template <class F>
  +template <typename F>
  void tile2d(int x0, int x1, int y0, int y1, int dx, int dy, F f)
  {
  //assert((x1 - x0) % tile_w == 0);
  