message: Add OpenImageIO or STB_image to texture load errors to help debug.
diff: @@ -43,7 +43,8 @@ namespace ospray {
  {
  auto in = ImageInput::open(fileName.c_str());
  if (!in) {
  - std::cerr << "#osp:sg: failed to load texture ' " << fileName << "'" << std::endl;
  + std::cerr << "#osp:sg: OpenImageIO failed to load texture ' " << fileName
  + << "'" << std::endl;
  // reset();
  } else {
  const ImageSpec &spec = in->spec();
  @@ -526,8 +527,11 @@ namespace ospray {
  int depth = hdr ? 4 : 1;
  if (!pixels) {
  - std::cerr << "#osp:sg: failed to load texture '" + fileName + "'"
  - << std::endl;
  + std::cerr << "#osp:sg: STB_image failed to load texture '" + fileName
  + + "'" << std::endl;
  +
  + std::cerr << "#osp:sg: Rebuilding OSPRay Studio with OpenImageIO "
  + << "support may fix this error." << std::endl;
  // reset();
  } else {
  unsigned int dataSize = size.x * size.y * channels * depth;
  