import { Texture, WebGPURenderer } from 'three/webgpu';
/**
 * Turns an equirectangular image into what `scene.environment` needs: a cube
 * capture, then a PMREM from it. Keeps the newest bake and frees the one
 * before.
 */
export declare class ImageBasedLightBaker {
    private _renderer;
    private _pmrem;
    private _target;
    constructor(_renderer: WebGPURenderer);
    /**
     * Bakes the image, or frees the last bake for `null`.
     *
     * @param image - The equirectangular image.
     * @returns The texture to put on `scene.environment`.
     */
    bake(image: Texture | null): Texture | null;
    /** whether the texture is the current bake */
    owns(texture: Texture | null): boolean;
    /** frees the current bake */
    release(): void;
    dispose(): void;
}