message: increased some tone mapping ranges in the GUI
diff: @@ -30,12 +30,12 @@ namespace ospray {
  createChild("exposure", "float", 0.0f,
  NodeFlags::required |
  NodeFlags::valid_min_max |
  - NodeFlags::gui_slider).setMinMax(-6.f, 6.f);
  + NodeFlags::gui_slider).setMinMax(-8.f, 8.f);
  createChild("contrast", "float", 1.6773f,
  NodeFlags::required |
  NodeFlags::valid_min_max |
  - NodeFlags::gui_slider).setMinMax(1.f, 4.f);
  + NodeFlags::gui_slider).setMinMax(1.f, 5.f);
  createChild("shoulder", "float", 0.9714f,
  NodeFlags::required |
  