import { d } from './index';

export type MaskType = 'alpha' | 'alphaInverted' | 'luminance' | 'luminanceInverted';
/** Alpha mask: target alpha × mask alpha. */
export declare const alpha: import('typegpu').TgpuFn<(target: d.Vec4f, mask: d.Vec4f) => d.Vec4f>;
/** Inverted alpha mask: target alpha × (1 - mask alpha). */
export declare const alphaInverted: import('typegpu').TgpuFn<(target: d.Vec4f, mask: d.Vec4f) => d.Vec4f>;
/** Luminance mask: target alpha × mask luminance. */
export declare const luminance: import('typegpu').TgpuFn<(target: d.Vec4f, mask: d.Vec4f) => d.Vec4f>;
/** Inverted luminance mask: target alpha × (1 - mask luminance). */
export declare const luminanceInverted: import('typegpu').TgpuFn<(target: d.Vec4f, mask: d.Vec4f) => d.Vec4f>;
/** Mask functions keyed by MaskType. Composer references these as externals. */
export declare const maskFunctions: {
    readonly alpha: import('typegpu').TgpuFn<(target: d.Vec4f, mask: d.Vec4f) => d.Vec4f>;
    readonly alphaInverted: import('typegpu').TgpuFn<(target: d.Vec4f, mask: d.Vec4f) => d.Vec4f>;
    readonly luminance: import('typegpu').TgpuFn<(target: d.Vec4f, mask: d.Vec4f) => d.Vec4f>;
    readonly luminanceInverted: import('typegpu').TgpuFn<(target: d.Vec4f, mask: d.Vec4f) => d.Vec4f>;
};
/**
 * Apply a mask to a target — CPU/builder-level dispatcher. `maskType` is compile-time; inside a
 * `'use gpu'` body reference `maskFunctions[type]` instead.
 */
export declare const applyMask: (target: d.v4f, mask: d.v4f, maskType?: MaskType) => d.v4f;
//# sourceMappingURL=mask.d.ts.map