In Clarisse, materials can output many different types of AOVs that can be colors, depth information, normals or raw sampling information used for render diagnostics. This data is always stored as raw values which makes it very difficult when trying to visualize the result. Indeed, a depth AOV looks as red image with values ranging from 0 to very large world scale values. Prior to Clarisse 4.0, it was extremely hard to visualize these AOVs. The only means were to look at the output values while hovering the mouse cursor on pixels or playing with the exposure in the image view.
By default the Image View displays automatically the AOV using the visual hint set in the Image Buffer Editor. However, it is possible to override the display mode by switching the visual hint mode from Automatic to the one you wish to use using the Visual Hint drop down.
"depth" AOV with Visual Hint set to "Raw"
"depth" AOV with Visual Hint set to "Automatic" (Black and White Normalized)
"diagnostics ray-count" AOV with Visual Hint set to "Black and White (Normalized)"
"diagnostics ray-count" AOV with Visual Hint set to "Automatic" (Heatmap Normalized)