registry MOSH

Photocopy · 085

capabilities open MOSH

Code-native visual signature / Color Chaos

photocopy

Photocopy

Blown-out repro with toner grain.

Category: Color Chaos
Parameters: 2
Registry no.: 085 / 143

Run Photocopy in the browser

What it reads

Frame-local Reads only the current frame, which makes it the cheapest kind to stack and safe to render into a Conjure window at any size.

Parameters

param	key	range	default
Amount	`amount`	0..1 (rendered to 2)	0.8
Exposure	`bias`	0..1	0.5

The renderer widens amount past its declared maximum by 2× before it reaches the shader, because most shader bodies were tuned against a muted top end. The rendered figure is the bound that actually arrives.

Defaults as a layer

{ "effectId": "photocopy", "params": { "amount": 0.8, "bias": 0.5 } }

GLSL fragment shader

The effect's own code. The uniforms and helpers above it — uTex, uFeedback, the depth proxy, the frame ring, depthAt(), timeAt() — are the same header every Ether-MOSH shader opens with, and are documented once on the registry rather than reprinted on all 143 pages.

void main(){ vec4 srcTex = texture2D(uTex, vUv); vec3 c = srcTex.rgb; float l = dot(c, vec3(0.299, 0.587, 0.114)); // Local average decides the cut, so the whole frame doesn't crush to one // tone the way a fixed threshold would. float local = dot(discBlur(vUv, 9.0), vec3(0.299, 0.587, 0.114)); float cut = local + (uBias - 0.5) * 0.45; float toner = smoothstep(cut + 0.05, cut - 0.05, l); toner *= 0.82 + 0.18 * noise(vUv * 420.0); vec3 paper = vec3(0.96, 0.95, 0.92); vec3 res = mix(paper, vec3(0.05, 0.05, 0.07), toner); gl_FragColor = vec4(mix(c, res, uAmount), srcTex.a); }

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Other Color Chaos effects

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