makepad/apps/vj/resources/effects/110_trans_negative.splash
Arena Agent d8d5ea8b6a Repair integration manifests and port nigig exports onto upstream widget families
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.
2026-10-26 11:23:26 +00:00

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// NEGATIVE MIX — the MX50 party trick: deck B's brightness INVERTS deck A
// (solarize where B burns). At rest nothing; ride the fader into the burn.
{
name: "Negative Mix"
engine: "transition"
// Overlay semantics: ridden to the fader's end the key STAYS fully
// applied (the composite is the destination) — never a snap to
// plain B. Zero only at the A end.
engage: "ramp"
p2: 0.5
dials: [
{name: "DRIVE", bind: "p0", default: 0.5},
{name: "THRS", bind: "p1", default: 0.0},
{name: "CURVE", bind: "p2", default: 0.5}
]
shader: draw.DrawVjFxDuo {
trans: fn(uv: vec2, t: float) -> vec4 {
let a = self.deck_a(uv)
let b = self.deck_b(uv)
let luma = dot(b.xyz, vec3(0.2126, 0.7152, 0.0722))
// THRS narrows the burn to B's highlights (0 = the stock
// linear response).
let l2 = mix(luma, smoothstep(0.3, 0.9, luma), self.user.y)
// CURVE bends the fader response (1:1 at mid-knob).
let tt = pow(clamp(t, 0.0, 1.0), pow(4.0, self.user.z * 2.0 - 1.0))
let burn = clamp(l2 * (0.5 + self.user.x * 1.5) * tt, 0.0, 1.0)
let neg = vec3(1.0, 1.0, 1.0) - a.xyz
return vec4(a.xyz.mix(neg, burn), 1.0)
}
}
}