RenderAttrKey:
| "absorption"
| "blending_mode"
| "colormap"
| "gamma"
| "intensity"
| "layer"
| "layer_order"
| "offset"
| "opacity"
| "visible"
| "copy"
| "link"
| "link_target"
| "join"
| "alpha_cutoff"
| "ambient"
| "material"
| "roughness"
| "metalness"
| "clearcoat"
| "clearcoat_roughness"
| "iridescence"
| "sheen"
| "sheen_color"
| "transmission"
| "ior"
| "thickness"
| "attenuation_color"
| "attenuation_distance"
| "dispersion"
| "refract_data"
| "shade_exponent"
| "shininess"
| "specular"
| "texture_filter"
| "texture_wrap"
| "slab_tolerance"
Union of the render / appearance attribute key names.