import { Texture, Vector2, Vector3, Vector4 } from "three";
import { Light } from "../Light.js";
export declare const pathTracingFragmentShaderSrc: string;
export declare const pathTracingUniforms: () => {
    tPreviousTexture: {
        type: string;
        value: Texture;
    };
    uSampleCounter: {
        type: string;
        value: number;
    };
    uFrameCounter: {
        type: string;
        value: number;
    };
    uResolution: {
        type: string;
        value: Vector2;
    };
    gClippedAaBbMin: {
        type: string;
        value: Vector3;
    };
    gClippedAaBbMax: {
        type: string;
        value: Vector3;
    };
    gVolCenter: {
        type: string;
        value: Vector3;
    };
    gDensityScale: {
        type: string;
        value: number;
    };
    gStepSize: {
        type: string;
        value: number;
    };
    gStepSizeShadow: {
        type: string;
        value: number;
    };
    gInvAaBbMax: {
        type: string;
        value: Vector3;
    };
    gNChannels: {
        type: string;
        value: number;
    };
    gShadingType: {
        type: string;
        value: number;
    };
    gGradientDeltaX: {
        type: string;
        value: Vector3;
    };
    gGradientDeltaY: {
        type: string;
        value: Vector3;
    };
    gGradientDeltaZ: {
        type: string;
        value: Vector3;
    };
    gInvGradientDelta: {
        type: string;
        value: number;
    };
    gGradientFactor: {
        type: string;
        value: number;
    };
    gCamera: {
        value: {
            mFrom: Vector3;
            mU: Vector3;
            mV: Vector3;
            mN: Vector3;
            mScreen: Vector4;
            mInvScreen: Vector2;
            mFocalDistance: number;
            mApertureSize: number;
            mIsOrtho: number;
        };
    };
    gLights: {
        value: Light[];
    };
    volumeTexture: {
        type: string;
        value: Texture;
    };
    gLutTexture: {
        type: string;
        value: Texture;
    };
    gIntensityMax: {
        type: string;
        value: Vector4;
    };
    gIntensityMin: {
        type: string;
        value: Vector4;
    };
    gOpacity: {
        type: string;
        value: number[];
    };
    gEmissive: {
        type: string;
        value: Vector3[];
    };
    gDiffuse: {
        type: string;
        value: Vector3[];
    };
    gSpecular: {
        type: string;
        value: Vector3[];
    };
    gGlossiness: {
        type: string;
        value: number[];
    };
    uShowLights: {
        type: string;
        value: number;
    };
    flipVolume: {
        type: string;
        value: Vector3;
    };
};