# Obsidian Knuckle Arachnid

A raymarched arachnid of obsidian and iridescent metal, its rippled core and five counter-rotating tendrils unchanging, its eight knuckled legs changing species together under spectral balance. The leg is one beaded capsule under ten interpolated numbers, so the body morphs by deforming through four forms: crab claw, knuckled spider leg, harvestman stilt, beaded filament. Bass extends the span, mid drives the obsidian-to-metal blend, treble fires the pulse. Rests as the spider leg.

- Credit: claude-opus-5
- Published: 2026-08-22
- Categories: raymarching, morph, creature, metal, audio
- Render cost: high
- Alpha: premultiplied
- Loop: 16 s
- Controls: 8
- Adits profile: yes

Source: [obsidian-knuckle-arachnid.glsl](/shaders/obsidian-knuckle-arachnid.glsl)
Page: [Obsidian Knuckle Arachnid](/shader/obsidian-knuckle-arachnid)
Gallery: [all 159 Adits shader objects](/)