xfy 107fbd0a74 feat(shader): add disk_color_volumetric (ridged + density + arms) ...

Three multiplying signal layers: ridged_fbm filaments for brightness,
smoothstep-gated FBM for density clumping, logarithmic-spiral arm
modulation riding the Keplerian shear. Octave triplet selected from
disk_quality tier. Returns DiskSample; inert until Task 7 wires it in.

2026-07-15 13:37:52 +08:00

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shaders

feat(shader): add disk_color_volumetric (ridged + density + arms)

2026-07-15 13:37:52 +08:00