message: gltfpack: Make sure that toktx is used when -tp is specified
  Without this, we'd silently skip the rescale step when using basisu for
  encoding.
diff: @@ -914,6 +914,12 @@ int gltfpack(const char* input, const char* output, const char* report, Settings
  fprintf(stderr, "Error: -ts option is only supported by toktx\n");
  return 3;
  }
  +
  + if (settings.texture_pow2 && !settings.texture_toktx)
  + {
  + fprintf(stderr, "Error: -tp option is only supported by toktx\n");
  + return 3;
  + }
  }
  if (oext == ".glb")
  