import type { RenderTargetOptions } from 'three';
import { DepthTexture, WebGLRenderTarget } from 'three';
export type UseFBOOptions = RenderTargetOptions & {
    /**
     * if set, the scene depth will be rendered into buffer.depthTexture
     */
    depth?: {
        width?: number;
        height?: number;
    } | DepthTexture | boolean;
    /**
     * if set, the render target size will be set to the corresponding width and height and not use or follow the size of the canvas
     */
    size?: {
        width?: number;
        height?: number;
    };
};
/**
 * Creates a `WebGLRenderTarget` whose `size` and `depth` configuration is
 * tracked through runes — pass `options` as a getter and the FBO updates when
 * those values change.
 *
 * Other render-target construction options (`format`, `type`, `samples`, …)
 * are read once at hook initialization; later changes to those properties on
 * the options object are ignored.
 *
 * ```svelte
 * <script lang="ts">
 *   import { useFBO } from '@threlte/extras'
 *
 *   let resolution = $state(512)
 *   const target = useFBO(() => ({
 *     size: { width: resolution, height: resolution }
 *   }))
 * </script>
 * ```
 */
export declare function useFBO(options?: () => UseFBOOptions | undefined): WebGLRenderTarget;
/**
 * @deprecated Pass `options` as a getter function instead. This signature will
 * be removed in Threlte 9.
 *
 * ```ts
 * // Before
 * const target = useFBO({ size: { width: 512, height: 512 } })
 *
 * // After
 * const target = useFBO(() => ({ size: { width: 512, height: 512 } }))
 * ```
 */
export declare function useFBO(options?: UseFBOOptions): WebGLRenderTarget;