message: Fix NaN values encountered with SSR and Metal
diff: @@ -573,7 +573,7 @@ vec3 evaluateRefraction(
  void evaluateIBL(const MaterialInputs material, const PixelParams pixel, inout vec3 color) {
  // specular layer
  - vec3 Fr;
  + vec3 Fr = vec3(0.0f);
  // screen-space reflections
  #if defined(MATERIAL_HAS_REFLECTIONS) && REFLECTION_MODE == REFLECTION_MODE_SCREEN_SPACE
  