import { TgdCodeFunctions } from "../shader";
import { ArrayNumber4 } from "../types";
/**
 * Fast hue shifting for colors.
 * Hue shift is expressed in __radians__.
 */
export declare function tgdCodeFunction_shiftHue({ name, }?: {
    name?: string;
}): TgdCodeFunctions;
export declare function tgdCodeFunction_luminance({ name, }?: {
    name?: string;
}): TgdCodeFunctions;
export declare function tgdCodeFunction_palette({ name, a, b, c, d, }?: {
    name?: string;
    a?: ArrayNumber4;
    b?: ArrayNumber4;
    c?: ArrayNumber4;
    d?: ArrayNumber4;
}): {
    [name]: string;
};
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