/**
 * Tonemapping post-process pass.
 * Reads HDR scene + bloom + SSAO textures. Applies:
 *   1. SSAO (multiply AO into scene)
 *   2. Exposure adjustment
 *   3. ACES filmic tonemapping
 *   4. Gamma correction
 *   5. Vignette
 * Outputs to the swapchain (rgba8unorm).
 */
export declare class TonemapPass {
    private readonly _device;
    private readonly _pipeline;
    private readonly _bgl;
    private readonly _sampler;
    private readonly _paramsBuffer;
    private readonly _paramsData;
    constructor(device: GPUDevice, outputFormat: GPUTextureFormat);
    execute(encoder: GPUCommandEncoder, hdrView: GPUTextureView, bloomView: GPUTextureView, aoView: GPUTextureView, outputView: GPUTextureView, bloomIntensity: number, exposure: number, vignetteIntensity: number, vignetteRadius: number): void;
    destroy(): void;
}
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