Toon hue saturation tone-mapping (Arnold 7.3.2.0)

You can now drive the hue and saturation of tonemapping in the toon shader through a set of four new parameters that complement the existing value-based tonemapping parameters.

Documentation

Toon tone-mapping: You can now drive the hue and saturation of tonemapping in the toon shader through a set of four new parameters that complement the existing value-based tonemapping parameters. The connected shader's U coordinate drives direct light hue and the V coordinate drives saturation, which enables textures to map the toon shader's response to colored lighting (Note: make sure to set the image's wrapping mode to clamp and filter to closest for best results) (ARNOLD-10687). These toon parameters include:
edge_tonemap_hue_saturation
silhouette_tonemap_hue_saturation
base_tonemap_hue_saturation
specular_tonemap_hue_saturation



Without tonemap_hue_saturation	With tonemap_hue_saturation the tone mapping reacts to colored lights

_{Various saturated color images -> tonemap_hue_saturation}

Below are variatons of the color palettes used for the tonemap_hue_saturation. In theory, any image could be used here as long as it has some suitable saturated colors.



1:1 mapping of the hue & saturation. A physical representation of what the light would look like.	A quantized version of the 1:1 mapping using 18 different cells with different levels of saturation.	An exaggerated version with sharp transitions between the red and blue tones.