/**
 * Standalone GPU compute benchmark using raw WebGPU API. Measures compute throughput
 * (shared memory + barriers + atomics) to determine whether the GPU is efficient enough
 * for the compute-based GSplat renderer vs the vertex/fragment path.
 *
 * Runs during device creation before engine infrastructure is initialized.
 *
 * @ignore
 */
export class WebgpuComputeBenchmark {
    /**
     * Run a short compute benchmark and return the elapsed time in milliseconds.
     *
     * @param {GPUDevice} device - The raw WebGPU device.
     * @param {boolean} supportsTimestamp - Whether the device supports timestamp queries.
     * @returns {Promise<number>} Elapsed milliseconds, or -1 if timestamp queries unavailable.
     */
    static run(device: GPUDevice, supportsTimestamp: boolean): Promise<number>;
}