import type { WebGLContextManager } from "../../webgl/context-manager";
import type { HeatmapChart } from "./heatmap";
export interface HeatmapLocations {
    u_projection: WebGLUniformLocation | null;
    u_cell_inset: WebGLUniformLocation | null;
    u_cell_size: WebGLUniformLocation | null;
    u_gradient_lut: WebGLUniformLocation | null;
    a_corner: number;
    a_cell: number;
    a_color_t: number;
}
/**
 * Full-frame render: WebGL cells → chrome overlay.
 */
export declare function renderHeatmapFrame(chart: HeatmapChart, glManager: WebGLContextManager): void;
/**
 * Chrome overlay: X axis + Y axis + color legend + (optional) tooltip.
 */
export declare function renderHeatmapChromeOverlay(chart: HeatmapChart): void;