CustomSosigToonSkin

Now with 200% more edge

"Rendering is 90% making sure the model shows up in both eyes." — every VR shader I have ever written

Swaps the plain Standard material that CustomSosigModelFramework builds for custom Sosig models with a cel-shaded RealToon material: flat toon ramp, #FF06B5 outline and a matching rim light. The framework does not expose a shader hook, so this is a small BepInEx companion plugin that patches the framework's material factory and hands back a prebuilt AssetBundle material instead.

Built for NikoSosig, but it is not locked to it — point NameFilter somewhere else and it will shade whatever model you like.

Features

• Cel shading with configurable ramp, shadow tint and rim light
• #FF06B5 inverted-hull outline (colour and width configurable)
• Normal maps, alpha cutout and vanilla tint are carried over from the framework's material
• Toon.ShaderMode switches between four bundled materials at runtime: RealToon (default), RealToonLite, Simple (my own single-pass cel shader, no outline) and Probe (a stereo diagnostic that paints the per-eye state)
• Toon.NameFilter keeps it from touching other people's model addons
• Bonus: patches the framework's hand IK reach gate (Motion.HandIkReachMeters), which is useful for any model whose arms are not Sosig-proportioned
• Delete the folder and you are back to the vanilla look instantly — nothing is written outside the config

Known Issues and Limitations

• The bundle ships a modified copy of the RealToon shader. If the shader author ever objects to that, Toon.ShaderMode = Simple uses a shader I wrote myself, so the plugin keeps working
• The patch targets the framework's internal CreateMaterial signature. If a framework update changes it, the plugin logs the failure and stays passive instead of breaking Sosigs — but then it needs an update from me
• The toon material is 4 passes (outline + forward + variants) instead of 1, so it costs a bit more than the default material. Fine on modern GPUs, noticeable on potatoes
• Outline width is in the shader's own units — very large values start to clip at close range
• It only rebuilds materials whose name or albedo path contains NameFilter (default Niko). Other model addons keep the default look on purpose
• The cel look is tuned for Niko's texture palette (#FF06B5). Apply it to another model and you may want to change OutlineColor/RimLightColor

I Asked Myself These Questions

How do I make it affect another model addon?

• Set Toon.NameFilter in BepInEx/config/niko666.customsosigtoonskin.cfg to something that appears in that addon's material name or texture path. Leave it empty to shade every addon the framework loads

My model has no outline / is not cel shaded

• Check the log for Toon material '...': mode=.... If the plugin never mentions your model, NameFilter did not match it. If the log never mentions the plugin at all, the framework was not found

How do I turn it off?

• Toon.Enabled = false in the config (then restart), or just delete the plugin folder

One eye renders the model in the wrong place

• That is the classic symptom of a homemade AssetBundle whose shaders were compiled in a Unity project without VR enabled — the shader has no per-eye code path, so it renders for one eye only. It is fixed in this bundle; if you repackage it yourself, set PlayerSettings.virtualRealitySupported = true and stereoRenderingPath = SinglePass before building
• Toon.ShaderMode = Probe prints what the shader sees per eye if it ever comes back

The hands are still not on the gun

• That is the model, not the shader. Raise Motion.HandIkReachMeters from 0.22 to 0.35–0.5 and restart

It looks broken

• Tell me on Discord: Niko_Niko666 (UTC+8, slow replies). Or just change the config — OutlineWidth = 0 and RimLightPower = 0 get you a plain flat-shaded look

Credits

• RealToon by MJQ Studio Works for the shader this is built on
• NotGodlike for CustomSosigModelFramework
• The H3VR community for the endless shader debugging lore
• You

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