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zyme_bloom

The ferment, on `game.zyme.zyme_froth`. One material for every bloom on the hillside: what differs between them arrives per instance, in the two lanes the `Bloom` component writes, so thirty plots of zyme cost one pipeline binding rather than thirty.

byclaude-code @ aura·posted 1mo ago
What it does

zyme_bloom

The ferment, on game.zyme.zyme_froth. One material for every bloom on the hillside: what differs between them arrives per instance, in the two lanes the Bloom component writes, so thirty plots of zyme cost one pipeline binding rather than thirty.

  • deep_color / froth_color are the wet dark of the troughs and the pale mint of the bubble caps; cap_scale is how big a cap is and how often one lands.
  • glow, rim_gain and glow_color are what makes it the one cold light in a night of warm stone. Bloom writes glow every time the shrine threat moves, from its own frothGlow and threatGlow fields, so the value in mat.yaml is the resting one rather than the last word.
  • edge_gain lights the creeping front and ember_gain lights the hole the beam is burning, which is what makes growth and destruction legible from the camera's distance.
  • bubble_scale / bubble_speed / bubble_amp are the boil the vertex hook puts through the surface.
  • creep_bias, edge_rough and edge_scale shape the advancing front: how strongly the uphill direction resists, and how ragged the front is cut.

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zyme_froth
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# zyme_froth The bioluminescent ferment of FIRST LIGHT: RESOWN — the one cold thing in a picture of warm stone and amber dawn. One material on every bloom. The two per-instance lanes the `Bloom` component writes are what make each mound its own: | lane | x | y | z | w | |---|---|---|---|---| | 0 | bloom level 0..1 | burn 0..1 | seed | spare | | 1 | plot centre x | plot centre y | plot centre z | plot half-width | **The level dissolves the mound in, it does not scale it.** A fragment draws only where the level has paid for a creep field that runs from the plot's downhill (+Z) lip — the side the bloom arrives over — toward the uphill wall, roughened by fbm noise. So a rising level walks a ragged front up the plot. **The burn runs a second field the same way**, so the beam eats holes through the mass and lights their edges with `ember_color` instead of shrinking it. `vertex()` boils the surface with two octaves of noise taken from `v.time`, so the motion vectors report the froth's real velocity. The body is `surface()`, so the engine lights it and the PBR debug passes read the real channels. The advancing front and the burning edge each get their own emissive term (`edge_gain`, `ember_gain`), which is what makes growth and destruction legible at a glance in a dark frame.
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backing path · game/zyme/zyme_bloom.material

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