message: add more light types
diff: @@ -56,7 +56,7 @@ namespace ospray {
  ImGui::SameLine();
  static int which = 0;
  - ImGui::Combo("##1", &which, "directional\0ambient\0", 2);
  + ImGui::Combo("##1", &which, "directional\0point\0quad\0ambient\0", 4);
  if (ImGui::Button("Cancel")) {
  show_add_light_modal = false;
  @@ -73,6 +73,12 @@ namespace ospray {
  type = "DirectionalLight";
  break;
  case 1:
  + type = "PointLight";
  + break;
  + case 2:
  + type = "QuadLight";
  + break;
  + case 3:
  type = "AmbientLight";
  break;
  default:
  