message: Fix bug causing model textures to be flipped if loading HDRI first
  Only happens if not using OpenImageIO for texture loading
  stbi_set_flip_vertically_on_load is static and needs to be managed
diff: @@ -295,6 +295,9 @@ void Texture2D::loadTexture_STBi(const std::string &fileName)
  texels = (void *)stbi_load(
  fileName.c_str(), &width, &height, &params.components, 0);
  + // Set flip on load back to default, STBi maintains a static global.
  + stbi_set_flip_vertically_on_load(0);
  +
  params.size = vec2ul(width, height);
  params.depth = isHDR ? 4 : is16b ? 2 : 1;
  