RPRBLND-2222: Add all Toon Shader inputs

[VascoPi]

PURPOSE

Add all Toon Shader inputs.

EFFECT OF CHANGE

RPR Toon node UI.

Added features: Mid Color as Albedo - shows the mid color on albedo AOV instead of base color. 5 Colors - allows set additional 2 colors Shadow Color 2, Highlight Color 2. Light - light link setting: we can choose 1 light from the scene to lit its material. Transparency - make it transparent by blending toon and transparent material.

TECHNICAL STEPS

Added support for input type MaterialNodeSetInputLightDataByKey. Adjusted light.sync, now it returns rpr_light. It returns already existing rpr_light or newly created. Added new features to RPRShaderNodeToon.

• bool properties: show_mix_levels, mid_color_as_albedo , five_colors, light
• inputs: "Shadow Color 2", "Highlight Color 2", "Transparency"
• light picker Adjusted viewport sync_update for object type bpy.types.Light. Now if a light is an update we update all materials which contain RPRShaderNodeToon and linked light as well.

[VascoPi]

1, 2, 3, 4 Done

5. Changed UI label to "Linked Light" and added a description. According to the feature description from core team: "Toon light link setting: we can choose 1 light from the scene to lit its material. (RPR_MATERIAL_INPUT_LIGHT on RPR_MATERIAL_NODE_TOON_CLOSURE) now we can't set emissive object to it but only light object"

6. The five colors are a representation of the color ramp (discussed with RPR Maya team)

[bsavery]

So the input to this "ramp" is the light level?

I'm a bit confused because I don't see the "shadow level" or "highlight level 2" inputs.

Here's my thoughts.

1. Shadow color 2 -> Rename to "Shadow Color"
2. Shadow Color -> "Mid Shadow Color"
3. Highlight Color -> Rename to "Mid Highlight Color"
4. Highlight Color 2 -> Rename to "Highlight Color"

Just in the UI.

Then reorder the inputs to correspond to the order:

1. Shadow Color
2. Mid shadow level
3. Mid Shadow Color
4. Mid Level
5. Mid Color etc

[VascoPi]

Shadow Color 2 -> Shadow Color Shadow color -> Mid Shadow Color Highlight Color 2 -> Highlight Color Highlight Color -> Mid Highlight Color

Added new sockets: Highlight Level -> MATERIAL_INPUT_POSITION_HIGHLIGHT Highlight Level Mix -> MATERIAL_INPUT_RANGE_HIGHLIGHT Mid Shadow Level -> MATERIAL_INPUT_POSITION_SHADOW Mid Shadow Level Mix -> MATERIAL_INPUT_RANGE_SHADOW