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Tentacle Shader Breakdown (Cyanilux)

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Cyanilux

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Description

Tentacle Shader Breakdown is a May 2022 Cyanilux Shader Graph tutorial for Technically A Challenge (Technically Speaking Discord): a tentacle mesh wraps a movable target via vertex displacement and rotation, not tessellation.

It walks Mesh setup in Blender, TentacleInteract C# for _Radius and _InteractPos, then vertex graph steps - Smoothstep offset, Z clamp, Rotate About Axis, normal rotation, sine length scaling, and sucker pulsation. Fragment color is illustrated only briefly.

For intermediate URP users who know Lit Shader Graph and script-driven material properties. You need a dense cylinder mesh on +Z with cylindrical UVs.

Annotated graphs and ExecuteInEditMode previewing make it easy to follow in Scene view. Free on cyanilux.com.

Handy for grab VFX without bones; widely linked among Unity shader communities.