d8d5ea8b6a
Restore missing required asset/flow packages from the pinned nigig revision; retain upstream script isolation, X11 hover, and widget-core fixes. Validated makepad-widgets data feature with Rust 1.97.1.
33 lines
1.3 KiB
Text
33 lines
1.3 KiB
Text
// LUMA KEY — the MX50's soul: deck B keys over deck A wherever B's luma
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// clears the threshold, and the FADER IS THE KEY AMOUNT (a ridden mode:
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// park it mid-travel and hold the composite; AUTOFADE off is its natural
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// habitat). LVL sets the threshold, SOFT the key edge, INV keys the dark
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// half instead.
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{
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name: "Luma Key"
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engine: "transition"
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// Overlay semantics: ridden to the fader's end the key STAYS fully
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// applied (the composite is the destination) — never a snap to
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// plain B. Zero only at the A end.
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engage: "ramp"
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dials: [
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{name: "LVL", bind: "p0", default: 0.5},
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{name: "SOFT", bind: "p1", default: 0.2},
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{name: "INV", bind: "p2", default: 0.0}
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]
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shader: draw.DrawVjFxDuo {
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trans: fn(uv: vec2, t: float) -> vec4 {
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let a = self.deck_a(uv)
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let b = self.deck_b(uv)
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let luma = dot(b.xyz, vec3(0.2126, 0.7152, 0.0722))
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let lvl = mix(0.05, 0.95, self.user.x)
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let soft = 0.01 + self.user.y * 0.3
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let mut key = smoothstep(lvl - soft, lvl + soft, luma)
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if self.user.z > 0.5 {
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key = 1.0 - key
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}
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// t rides the key on: 0 = clean A, full = the keyed composite.
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return a.mix(b, key * t)
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}
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}
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}
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