import type { WebGLContextManager } from "../../webgl/context-manager";
import type { TreemapChart } from "./treemap";
/**
 * Full-frame treemap render: layout → WebGL rects → chrome overlay.
 *
 * When `_splitBy` is populated the top-level children of `_rootId`
 * become facet roots; each is squarified into its own cell rect via
 * {@link buildFacetGrid}. The visible-node list is concatenated across
 * facets so a single vertex buffer + draw call covers the whole scene.
 */
export declare function renderTreemapFrame(chart: TreemapChart, glManager: WebGLContextManager): void;
/**
 * Render the chrome overlay. On layout changes, draws static content
 * (labels, breadcrumbs, legend) directly and snapshots it into a cached
 * bitmap. On hover-only updates, blits the cache and draws only the
 * tooltip + highlight on top.
 */
export declare function renderTreemapChromeOverlay(chart: TreemapChart): void;