import type { TSLFloatNode, TSLFunction, TSLUintNode, TSLVec4Node } from '../types/tsl.cjs';
/** Packed color node accepted by {@link unpackRGBA8}. */
export type UnpackRGBA8Input = TSLUintNode | TSLFloatNode;
/** Arguments accepted by {@link unpackRGBA8}. */
export type UnpackRGBA8Arguments = [packed: UnpackRGBA8Input];
/**
 * Unpack a `0xRRGGBBAA` word into normalized linear components.
 *
 * A uint node is consumed directly. A float node is treated as a bit carrier and
 * reinterpreted as uint, which lets callers keep a packed color beside float
 * particle data without a second four-component color buffer.
 *
 * @tsl
 * @function
 * @param {Node<uint>|Node<float>} packed Packed `0xRRGGBBAA` color or its float bit carrier.
 * @return {Node<vec4>} Normalized RGBA components in `[0, 1]`.
 */
export declare const unpackRGBA8: TSLFunction<UnpackRGBA8Arguments, TSLVec4Node>;