import type { UniformControl } from '../_shared/types';
/** Typed uniforms for the `blur` layer shader. */
export type BlurUniforms = {
    /** Gaussian blur sigma (softness). Higher = softer. Slider range [0.5, 10]. */
    readonly sigma: number;
};
/**
 * The `blur` layer's tunable. A single `sigma`, surfaced as "blur" (the `label`).
 * The live kernel is a 13-tap separable gaussian whose tap spacing also scales
 * with sigma, so the top of the slider keeps softening (with a faint ghost) past
 * where a fixed-radius kernel saturates. The max of 10 keeps that spread subtle;
 * see the kernel in web-driver/effects/composite.ts (mirrored on Android + iOS).
 */
export declare const BLUR_CONTROLS: readonly UniformControl[];
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