registry MOSH

Paper Grain · 140

capabilities open MOSH

Code-native visual signature / Atmosphere

paperGrain

Paper Grain

Fibrous substrate multiplied over the image — distinct from Film Grain's halation.

Category: Atmosphere
Parameters: 2
Registry no.: 140 / 143

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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)	0.4
Fiber Scale	`scale`	20..200	80

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": "paperGrain", "params": { "amount": 0.4, "scale": 80 } }

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 c = texture2D(uTex, vUv); vec2 p = vUv * uScale; float fiber = noise(p) * 0.5 + noise(p * 2.3 + 7.0) * 0.3 + noise(p * 5.1 - 3.0) * 0.2; fiber = fiber * 0.5 + 0.5; vec3 toned = c.rgb * mix(1.0, fiber, uAmount); gl_FragColor = vec4(toned, c.a); }

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Other Atmosphere effects

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