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.
40 lines
1.5 KiB
Text
40 lines
1.5 KiB
Text
// FRESNEL — the frame reads through concentric fresnel-lens steps: radius
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// is quantised into rings, each ring bends its sample and carries a seam.
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{
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name: "Fresnel"
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engine: "screen"
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input0: "test"
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p0: 0.5 p1: 0.5 p2: 0.5
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dials: [
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{name: "RINGS", bind: "p0", default: 0.5},
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{name: "DEPTH", bind: "p1", default: 0.5},
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{name: "SPIN", bind: "p2", default: 0.5}
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]
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stages: [
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{kind: "bloom", threshold: 0.6, strength: 1.05, levels: 2}
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]
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shader: draw.DrawVjFxScreen {
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fx_color: fn(uv: vec2, content: vec4, cmix: float) -> vec4 {
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let center = vec2(0.5, 0.5)
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let d = uv - center
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let r = length(d)
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let ang = atan2(d.y, d.x)
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let rings = 6.0 + 28.0 * self.user.x
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let stepr = floor(r * rings) / rings
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let fracr = fract(r * rings)
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let depth = 0.01 + 0.05 * self.user.y
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let bend = (fracr - 0.5) * depth * (0.7 + 0.3 * self.time_beat.w)
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let newr = clamp(stepr + bend, 0.0, 0.75)
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let swirl = (1.0 - stepr) * self.user.z * 1.2 * (0.5 + 0.5 * self.time_beat.w)
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let newang = ang + swirl
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let w = center + vec2(cos(newang), sin(newang)) * newr
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let tex = self.tex0.sample_as_bgra(clamp(w, vec2(0.0, 0.0), vec2(1.0, 1.0)))
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let seam = 1.0 - smoothstep(0.0, 0.05, min(fracr, 1.0 - fracr))
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let out = tex.xyz + vec3(1.0, 1.0, 1.0) * seam * 0.14
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return vec4(out, 1.0)
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}
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}
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}
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