import { type INode } from "babylonjs-gltf2interface";
import { type IGLTFExporterExtensionV2 } from "../glTFExporterExtension.js";
import { type BufferManager } from "../bufferManager.js";
import { GLTFExporter } from "../glTFExporter.js";
import { type Nullable } from "@babylonjs/core/types.js";
import { type Node } from "@babylonjs/core/node.js";
/**
 * [Specification](https://github.com/KhronosGroup/glTF/blob/main/extensions/2.0/Vendor/EXT_mesh_gpu_instancing/README.md)
 */
export declare class EXT_mesh_gpu_instancing implements IGLTFExporterExtensionV2 {
    /** Name of this extension */
    readonly name = "EXT_mesh_gpu_instancing";
    /** Defines whether this extension is enabled */
    enabled: boolean;
    /** Defines whether this extension is required */
    required: boolean;
    /**
     * Internal state to emit warning about instance color alpha once
     */
    private _instanceColorWarned;
    private _exporter;
    private _wasUsed;
    constructor(exporter: GLTFExporter);
    dispose(): void;
    /** @internal */
    get wasUsed(): boolean;
    /**
     * After node is exported
     * @param context the GLTF context when loading the asset
     * @param node the node exported
     * @param babylonNode the corresponding babylon node
     * @param nodeMap map from babylon node id to node index
     * @param convertToRightHanded true if we need to convert data from left hand to right hand system.
     * @param bufferManager buffer manager
     * @returns nullable promise, resolves with the node
     */
    postExportNodeAsync(context: string, node: Nullable<INode>, babylonNode: Node, nodeMap: Map<Node, number>, convertToRightHanded: boolean, bufferManager: BufferManager): Promise<Nullable<INode>>;
    private _buildAccessor;
}
/**
 * Registers the EXT_mesh_gpu_instancing glTF serializer extension with the {@link GLTFExporter}.
 * Safe to call multiple times; only the first call has an effect.
 */
export declare function RegisterEXT_mesh_gpu_instancing(): void;