message: Check framebuffer color format before enabling Denoiser
  * Previous issue with OIDN not working yet was a system
  configuration error, and not code.
diff: @@ -21,7 +21,6 @@ namespace ospray::sg {
  FrameBuffer::FrameBuffer()
  {
  createChild("size", "vec2i", vec2i(1024, 768));
  - //createChild("colorFormat", "string", std::string("sRGB"));
  createChild("colorFormat", "string", std::string("float"));
  updateHandle();
  @@ -67,9 +66,9 @@ namespace ospray::sg {
  void FrameBuffer::updateDenoiser(bool enabled)
  {
  - // XXX Denoiser requires float color buffer.
  - // Check fb format as condition of enabling.
  - if (enabled) {
  + // Denoiser requires float color buffer.
  + auto colorFormatStr = child("colorFormat").valueAs<std::string>();
  + if (enabled && colorFormatStr == "float") {
  cpp::ImageOperation d("denoiser");
  handle().setParam("imageOperation", cpp::Data(d));
  } else {
  