message: fix shader overflows leading to black pixels
  we clamp the output of post_process materials to 0,FLT16_MAX
diff: @@ -5,5 +5,9 @@ void main() {
  // Invoke user code
  postProcess(inputs);
  +#if defined(TARGET_MOBILE)
  + inputs.color = clamp(inputs.color, 0.0, MEDIUMP_FLT_MAX);
  +#endif
  +
  fragColor = inputs.color;
  }
  