import * as THREE from 'three';
/** Options for {@link createRenderer}. */
export interface RendererOptions {
    canvas: HTMLCanvasElement;
    /** @defaultValue true */
    antialias?: boolean;
    /**
     * Upper bound applied to `window.devicePixelRatio`.
     * @defaultValue 2
     */
    pixelRatioMax?: number;
    /**
     * Enable PCF soft shadow maps.
     * @defaultValue true
     */
    shadows?: boolean;
    /** @defaultValue THREE.ACESFilmicToneMapping */
    toneMapping?: THREE.ToneMapping;
    /** @defaultValue 1 */
    toneMappingExposure?: number;
    /** For scenes spanning huge depth ranges (space scale -> surface scale). */
    logarithmicDepthBuffer?: boolean;
}
/**
 * Create a `WebGLRenderer` with production defaults: high-performance power
 * preference, sRGB output, ACES filmic tone mapping, PCF soft shadows, and
 * pixel ratio capped at 2. The renderer is sized to the canvas parent element
 * (falling back to `document.body`) without touching the canvas CSS size.
 *
 * @param options - Canvas plus overrides; see {@link RendererOptions}.
 * @returns The configured renderer. Create one per scene and never recreate it
 * per frame; call `dispose()` on teardown.
 */
export declare function createRenderer({ canvas, antialias, pixelRatioMax, shadows, toneMapping, toneMappingExposure, logarithmicDepthBuffer, }: RendererOptions): THREE.WebGLRenderer;
/** Callback invoked after a resize with the new width and height in CSS pixels. */
export type ResizeHandler = (width: number, height: number) => void;
/**
 * Keep the renderer and camera in sync with the canvas parent's size via a
 * `ResizeObserver`. On each resize the renderer is resized and, for
 * perspective cameras, the aspect ratio and projection matrix are updated;
 * `onResize` then runs for app-level work (ortho frustums, composers).
 *
 * @returns Detach function that disconnects the observer.
 */
export declare function attachResizeObserver(renderer: THREE.WebGLRenderer, camera: THREE.Camera, canvas: HTMLCanvasElement, onResize?: ResizeHandler): () => void;
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