message: have gui be off by default in example viewer, same as the sg version
diff: @@ -29,7 +29,6 @@ namespace exampleViewer {
  ospcommon::vec3f translate;
  ospcommon::vec3f scale;
  bool lockFirstFrame = false;
  - bool showGui = true;
  bool fullscreen = false;
  std::string displayWall = "";
  @@ -100,8 +99,6 @@ namespace exampleViewer {
  scale.z = atof(av[++i]);
  } else if (arg == "--lockFirstFrame") {
  lockFirstFrame = true;
  - } else if (arg == "--nogui") {
  - showGui = false;
  } else if (arg == "--fullscreen") {
  fullscreen = true;
  }
  @@ -154,7 +151,6 @@ namespace exampleViewer {
  // no diplay wall - nix the display wall renderer
  rendererDW = ospray::cpp::Renderer();
  }
  - ospray::imgui3D::ImGui3DWidget::showGui = showGui;
  ospray::ImGuiViewer window(bbox, model, renderer, rendererDW, frameBufferDW, camera);
  window.setScale(scale);
  