export interface HexTilingParams {
    /**
     * Scale factor for the hexagonal tiles used to break up the texture.  This is the most important
     * parameter for controlling the look of the hex tiling and likely needs to be adjusted for each
     * texture.
     *
     * Should be greater than zero and usually somewhere between 0.1 and 16, but the optimal
     * value depends on the texture and the desired effect.
     *
     * Larger values create smaller hexagonal tiles and break up the texture more.
     *
     * **Default**: 2
     */
    patchScale: number;
    /**
     * If set to true, contrast-corrected blending will be used to blend between the texture samples.  This
     * greatly improves the quality of the blending for most textures, but can sometimes create very bright
     * or very dark patches if the texture has a lot of contrast.
     *
     * See https://www.shadertoy.com/view/4dcSDr for a demo of the effect.
     *
     * **Default**: `true`
     */
    useContrastCorrectedBlending: boolean;
    /**
     * The magnitude under which texture lookups will be skipped.
     *
     * You probably don't need to change this.
     *
     * **Default**: 0.01
     *
     * ### Details
     *
     * The hex tiling shader mixes between up to three texture samples per fragment.  As an optimization,
     * if the magnitude of one particular mix is below this threshold, the texture lookup will be skipped to
     * reduce GPU memory bandwidth usage.
     *
     * If the final coefficient of a texture sample is less than `lookupSkipThreshold`, the texture lookup will
     * be skipped.
     */
    lookupSkipThreshold: number;
    /**
     * The exponent to which texture sample coefficients are raised before comparing to `lookupSkipThreshold`.
     *
     * Higher values make the shader more efficient but can make the borders between hexagonal tiles more visible.
     *
     * Lower values make the shader less efficient and can cause detail to get washed out and make the texture
     * look blurry and homogenized.
     *
     * The default value works pretty well for most textures; you likely don't need to change this.
     *
     * **Default**: 8
     *
     * ### Details
     *
     * The hex tiling shader mixes between up to three texture samples per fragment.  By raising the coefficients
     * to a power, it's possible to make the threshold for skipping a texture lookup more or less steep.  Exponents
     * greater than 1 make the threshold steeper, exponents less than 1 make the threshold less steep.
     *
     * Higher exponents, when combined with `lookupSkipThreshold`, can be used to make the hex tiling shader
     * more efficient by skipping some texture lookups and reducing GPU memory bandwidth usage.
     */
    textureSampleCoefficientExponent: number;
}
declare module "three" {
    interface MeshStandardMaterial {
        /**
         * Parameters for controlling the hex tiling from `three-hex-tiling`.
         *
         * If this parameter is not set, hex tiling will not be applied.
         *
         * This parameter cannot be changed after the material is created.
         */
        hexTiling?: Partial<HexTilingParams>;
    }
    interface MeshStandardMaterialParameters {
        /**
         * Parameters for controlling the hex tiling from `three-hex-tiling`.
         *
         * If this parameter is not set, hex tiling will not be applied.
         *
         * This parameter cannot be changed after the material is created.
         */
        hexTiling?: Partial<HexTilingParams>;
    }
}