import * as THREE from 'three';
import { ShaderPass } from 'three/addons/postprocessing/ShaderPass.js';
/** Raw ShaderPass shader definition for colour grading: tint, contrast, saturation, vignette, grain, and radial chromatic aberration. Runs in linear HDR before tone-mapping. */
export declare const GradeShader: {
    uniforms: {
        tDiffuse: {
            value: null;
        };
        uTime: {
            value: number;
        };
        uTint: {
            value: THREE.Color;
        };
        uContrast: {
            value: number;
        };
        uSaturation: {
            value: number;
        };
        uVignette: {
            value: number;
        };
        uGrain: {
            value: number;
        };
        uChromatic: {
            value: number;
        };
    };
    vertexShader: string;
    fragmentShader: string;
};
/** Options for {@link createGradePass}. */
export interface GradePassOptions {
    tint?: THREE.ColorRepresentation;
    contrast?: number;
    saturation?: number;
    vignette?: number;
    grain?: number;
    chromatic?: number;
}
/** Colour-grade pass with a setTime() method to animate seeded grain. */
export interface GradePass extends ShaderPass {
    setTime(elapsed: number): void;
}
/** Create a ShaderPass that applies tint, contrast, saturation, vignette, seeded grain, and radial chromatic aberration in linear HDR. Place before OutputPass (tone-mapping). */
export declare function createGradePass({ tint, contrast, saturation, vignette, grain, chromatic, }?: GradePassOptions): GradePass;
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