/** Uint16Array depth buffer for early-Z rejection. */
export declare class DepthBuffer {
    #private;
    constructor(width: number, height: number);
    get width(): number;
    get height(): number;
    get data(): Uint16Array;
    /** Clears all depth values to far plane (0xFFFF). */
    clear(): void;
    /**
     * Tests a fragment's depth against the stored value and updates if closer.
     * @param depth Uint16 depth value (0 = near, 65535 = far)
     * @returns true if the fragment passes (is closer than stored)
     */
    testAndSet(x: number, y: number, depth: number): boolean;
    resize(width: number, height: number): void;
}
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