message: Ensure ray t_far / maxDepth >= 0
diff: @@ -26,7 +26,7 @@ float Renderer_getMaxDepth(const Renderer *uniform self, const vec2f &screenPos)
  DifferentialGeometry lookup;
  initDgFromTexCoord(lookup, screenPos);
  - return get1f(self->maxDepthTexture, lookup);
  + return max(0.f, get1f(self->maxDepthTexture, lookup));
  }
  void Renderer_default_renderSample(Renderer *uniform self,
  