message: update comment to explain current situation regarding "legacy texture creation"
diff: @@ -35,8 +35,10 @@ using namespace CesiumGltf;
  namespace {
  #if LEGACY_TEXTURE_CREATION
  -// Legacy texture creation code path. Only for testing, no safety checks are
  -// done.
  +// Legacy texture creation code path - creates textures using Unreal's
  +// FTexture2DMipMap and Texture2D::UpdateResource(). While this is slightly
  +// less efficient than other approaches we've found, this is still the only
  +// approach that works on certain platforms (as far as we currently know).
  void legacy_populateMips(
  FTexturePlatformData& platformData,
  