Magical gene / ground and strong white

Dragon Shroud

Soft-edged plumage laid over the whole horse and piped in steel grey, breaking into streamers down the mane and tail - with the coat underneath showing through as scattered windows. A third allele carries the same marking worked in greys instead of white - dark where the pale form is light, and the same number of steps.

What it can come out as

OutcomeCarrying
Dragon ShroudDrsw/Drsw · Drsw/Drsc · Drsw/n · Drsw/Drsk
Dragon Shroud, blackDrsk/Drsk · Drsk/Drsc · Drsk/n
Dragon Shroud, colouredDrsc/Drsc
Wild typeDrsc/n · n/n

How each one is actually drawn - region by region, and the layers it is built from - is on the coding tab.

Crossing two of them

Finding one

About 1 in 3,572 wild horses is born showing this. That is the whole of the supply: catch one, or make one with the carrot below. Breeds set their own pools and a breed built around this gene will carry it far more often than the wild population does.

Wild pairShows asHow often
Drsw/DrswDragon Shroud0.001% — 1 in 100,000
Drsw/DrskDragon Shroud0.0013% — 1 in 75,019
Drsw/DrscDragon Shroud0.0013% — 1 in 75,019
Drsw/nDragon Shroud0.019% — 1 in 5,263
Drsk/DrskDragon Shroud, black0.0013% — 1 in 75,019
Drsk/DrscDragon Shroud, black0.0013% — 1 in 75,019
Drsk/nDragon Shroud, black0.0013% — 1 in 75,019
Drsc/DrscDragon Shroud, coloured0.0013% — 1 in 75,019
n/nWild type99.972%

Its gene carrot

The file

common/src/main/resources/horsegenetics/genes/dragon_shroud.json — a data-driven gene, not a Java class. It is listed in the index.json beside it and registered by Genes' class initialiser at startup.

Keyhorsegenetics.dragon_shroud
Phasemagical — it adds signed colour in phase 3, after the pigment has resolved
Priority217 — where it sits in the one (priority, key) paint order
AllelesDrsw · Drsk · Drsc · n
Varies per horse12 values drawn once off the expressing allele copy, so a foal that inherits the copy inherits the look
Built fromSPOTS, TOWARD, WAVES

Why it is built this way

Imported from the magic-gene intake, 2026-09-08. The piping round each plume was specified as a `spread` on the plume's own spot field. `spread` is a PIGMENT parameter and does not exist on SPOTS, so the rim is built the way every other rim in this mod is: a slightly larger disc with the disc itself taken out of it, on the same seed and spacing so the two line up exactly.

The coloured form deliberately has no piping. One tone reads as a different gene at a glance, which is what a recessive form is for.

The black allele is the white one with the light taken out of it, and it sits one rung under white in the dominance series - so every combination that existed before it keeps the outcome it had, and only the pairs carrying Drsk are new. The re-toning is a mapping rather than a repaint: every achromatic target moves into the dark end of the scale keeping its order and its spacing, and every SATURATED one is left alone, because that colour is the gene rather than its lightness.

What it paints

Each outcome, described the way the gene file describes it, and then the layers that draw it in the order they are painted. The prose is the part a reader checks a bake against; the list underneath is what the engine actually did.

Dragon Shroud

Overlapping white plumes cover almost the whole horse, each one outlined in a thin steel grey drawn as a slightly larger disc with the plume taken out of it. A second, much finer spot field is subtracted out of them, and that is what leaves the windows of ordinary coat scattered through the white. The mane and tail take saw waves instead, which read as feathered streamers rather than as hair.

  1. the plumage, with windows of coat left in it — SPOTS × SPOTS inverted, painted with TOWARD
  2. the steel piping round each plume — SPOTS × SPOTS inverted, painted with TOWARD
  3. streamers down the mane and tail — WAVES, painted with TOWARD

Dragon Shroud, black

The same marking as the white form with the light taken out of it: the same 2 steps, moved to the dark end of the scale.

  1. the plumage, with windows of coat left in it — SPOTS × SPOTS inverted, painted with TOWARD
  2. the steel piping round each plume — SPOTS × SPOTS inverted, painted with TOWARD
  3. streamers down the mane and tail — WAVES, painted with TOWARD

Dragon Shroud, coloured

The same plumage in a colour the line carries, and without the piping - a coloured shroud is one tone, which is the difference a person will notice first. Fully recessive.

  1. the plumage, with windows of coat left in it — SPOTS × SPOTS inverted, painted with TOWARD
  2. streamers down the mane and tail — WAVES, painted with TOWARD

Wild type

No shroud.

Paints nothing.