/**
 * Instantiate a ModelAsset into the engine's GameObject hierarchy.
 * Uploads textures to the GPU and creates Meshes + Materials + MeshRenderers.
 * Supports skeletal animation via SkinnedMeshRenderer + AnimationMixer.
 */
import { GameObject } from '@certe/atmos-core';
import type { MeshRendererContext, SkinnedRendererContext } from '@certe/atmos-renderer';
import type { ModelAsset } from './types.js';
/** Minimal interface so callers can pass a RenderSystem without importing it. */
export interface InstantiateContext extends MeshRendererContext, SkinnedRendererContext {
}
export interface InstantiateOptions {
    renderSystem: InstantiateContext;
}
/**
 * Create a GameObject tree from a ModelAsset.
 * Decodes and uploads textures, creates GPU meshes and materials.
 * Automatically sets up SkinnedMeshRenderer + AnimationMixer for skinned models.
 * Returns the root GameObject (caller adds to scene).
 */
export declare function instantiateModel(asset: ModelAsset, options: InstantiateOptions): Promise<GameObject>;
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