message: default bgColor in example viewer to opaque white (not OSPRay default)
diff: @@ -77,10 +77,12 @@ namespace ospray {
  renderer.set("model", sceneModels[0]);
  renderer.set("camera", camera);
  + renderer.set("bgColor", 1.f, 1.f, 1.f, 1.f);
  if (rendererDW) {
  rendererDW.set("model", sceneModels[0]);
  rendererDW.set("camera", camera);
  + rendererDW.set("bgColor", 1.f, 1.f, 1.f, 1.f);
  }
  renderEngine.setRenderer(renderer, rendererDW, frameBufferDW);
  renderEngine.setFbSize({1024, 768});
  