import type { SimulationProgram } from "@skenora/contracts";
import { SimulationRuntimeModel } from "./simulation-runtime-model.js";
export interface WebGpuSimulationRendererOptions {
    readonly canvas: HTMLCanvasElement;
    readonly program: Readonly<SimulationProgram>;
    readonly autoStart?: boolean;
    readonly maxPixelRatio?: number;
}
export interface WebGpuSimulationSnapshot {
    readonly version: 1;
    readonly backend: "webgpu";
    readonly kernel: SimulationProgram["kernel"];
    readonly status: ReturnType<SimulationRuntimeModel["snapshot"]>["status"];
    readonly topologySignature: string;
    readonly grid: Readonly<{
        width: number;
        height: number;
    }>;
    readonly canvas: Readonly<{
        width: number;
        height: number;
    }>;
    readonly resources: readonly [string, string];
    readonly currentResource: string;
    readonly storageBytes: number;
    readonly passesPerStep: number;
    readonly swaps: number;
    readonly fixedSteps: number;
    readonly frames: number;
    readonly readbacks: number;
    readonly droppedMilliseconds: number;
    readonly features: readonly string[];
    readonly limits: Readonly<Record<string, number>>;
    readonly loss?: Readonly<{
        reason: string;
        message: string;
    }>;
}
export interface WebGpuSimulationProbeReport {
    readonly version: 1;
    readonly verdict: "healthy" | "unhealthy";
    readonly byteLength: number;
    readonly finiteSamples: number;
    readonly nonZeroSamples: number;
    readonly maximumAbsoluteValue: number;
    readonly steadyStateReadbacks: 0;
}
export declare class WebGpuSimulationUnsupportedError extends Error {
    constructor(message?: string);
}
/**
 * Optional public WebGPU compute/fullscreen renderer. It owns all GPU objects
 * and exposes only serializable snapshots and explicit probe data.
 */
export declare class WebGpuSimulationRenderer {
    #private;
    private constructor();
    static create(options: WebGpuSimulationRendererOptions): Promise<WebGpuSimulationRenderer>;
    snapshot(): WebGpuSimulationSnapshot;
    pause(): void;
    resume(): void;
    reset(): void;
    probe(): Promise<WebGpuSimulationProbeReport>;
    dispose(): void;
}
export declare function isWebGpuSimulationSupported(): boolean;
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