import type { BufferAttribute, Renderer, WebGPURenderer } from 'three/webgpu';
import type { WebGLRenderer } from 'three';
interface RendererBindingGroup {
    bindings?: readonly unknown[];
}
interface RendererRenderObject {
    material?: unknown;
    getBindings?: () => unknown;
    onDispose: () => void;
}
/** Narrow the renderer callback's legacy WebGL type to the r185 WebGPU renderer marker. */
declare function isWebGPURenderer(renderer: WebGLRenderer | WebGPURenderer): renderer is WebGPURenderer;
/**
 * Ensure an r185 renderer backend has allocated a storage attribute before readback.
 * Both methods are private backend capabilities and are intentionally probed at runtime.
 */
declare function ensureRendererStorageAttribute(renderer: Renderer, attribute: BufferAttribute): void;
/** Return whether the renderer has a compiled pipeline for a compute node. */
declare function rendererHasComputePipeline(renderer: Renderer | null, computeNode: object): boolean;
/** Read the r185 node-manager binding groups associated with a compute node. */
declare function getRendererComputeBindingGroups(renderer: Renderer | null, computeNode: object): readonly RendererBindingGroup[];
declare function getRendererBindingGroupBindings(bindGroup: RendererBindingGroup): readonly unknown[];
/**
 * Destroy the backend buffer owned by a binding, then delete its r185 DataMap entry.
 * Render-object cleanup can require an existing entry; compute cleanup intentionally
 * follows the historical behavior and lets backend.get() materialize an empty entry.
 */
declare function destroyRendererBindingBuffer(renderer: Renderer | null, binding: object, clearBufferReference: boolean, requireExisting: boolean): void;
/** Delete a BufferAttribute from the renderer's private r185 attribute manager. */
declare function deleteRendererAttribute(renderer: Renderer | null, attribute: BufferAttribute): void;
/**
 * Patch the r185 RenderObjects factory once for the renderer lifetime.
 * The runtime predicate keeps the private factory result structural and bounded.
 */
declare function patchRendererRenderObjectFactory(renderer: Renderer | null, installedKey: symbol, decorate: (renderObject: RendererRenderObject) => void): void;
declare function getRendererRenderObjectBindingGroups(renderObject: RendererRenderObject): readonly RendererBindingGroup[];
export { deleteRendererAttribute, destroyRendererBindingBuffer, ensureRendererStorageAttribute, getRendererBindingGroupBindings, getRendererComputeBindingGroups, getRendererRenderObjectBindingGroups, isWebGPURenderer, patchRendererRenderObjectFactory, rendererHasComputePipeline, };
export type { RendererRenderObject };