Viewport Labels

Enable labels with showLabels.

<DebugViews
  views={views}
  layout="row"
  slots={4}
  showLabels
  viewportLabels={["Beauty", "Normals", "Depth", "Albedo"]}
/>

In viewport mode, labels follow the explicit viewportViews plan:

<DebugViews
  mode="viewport"
  views={views}
  viewportViews={[
    { view: "beauty", label: "Reference" },
    { view: "normal", label: "Geometry normals" },
  ]}
  layout={{ mode: "row", slots: 2 }}
  showLabels
/>

You can also pass a formatter function when labels need to be generated from the view and viewport index.