subsurface {
  child: debug {
    message: "A node that is deep in, but still found";
    child: debug {
      message: "Affine transforms, debug nodes and single-child containers are ok";
      child: transform {
        transform: translate(10, 10) scale(5, 10);
        child: container {
          texture { }
        }
      }
    }
  }
}
subsurface {
  child: debug {
    message: "Multi-child containers are not ok";
    child: container {
      color { }
      texture { }
    }
  }
}
subsurface {
  child: debug {
    message: "other nodes, such as cross-fade, are not ok";
    child: cross-fade {
      start: texture { }
      end: texture { }
      progress: 0.5;
    }
  }
}
subsurface {
  child: debug {
    message: "Other nodes, such as cross-fade, are not ok";
    child: cross-fade {
      start: texture { }
      end: texture { }
      progress: 0.5;
    }
  }
}
subsurface {
  child: debug {
    message: "Clips (regardless how large) are not ok";
    child: clip {
      clip: 0 0 400 400;
      child: texture { }
    }
  }
}
subsurface {
  child: debug {
    message: "Can't offload non-textures";
    child: linear-gradient { }
  }
}