/**
 * Canvas2D-based glyph rasterizer for VolvoxGrid WASM.
 *
 * When the engine's SwashCache cannot produce a glyph (e.g. font not loaded
 * into the engine but available to the browser), this rasterizer uses an
 * offscreen Canvas2D to render the character and returns the alpha bitmap.
 *
 * Usage:
 *   import { createCanvas2DRasterizer } from './canvas2d-rasterizer';
 *   import { set_glyph_rasterizer } from '../wasm/volvoxgrid_wasm.js';
 *   set_glyph_rasterizer(createCanvas2DRasterizer());
 */
import { type BrowserFontFallbackOptions } from './font-fallbacks.js';
interface GlyphBitmap {
    width: number;
    height: number;
    offsetX: number;
    offsetY: number;
    advanceWidth: number;
    data: Uint8Array;
}
export interface Canvas2DRasterizerOptions {
    fontFallbacksEnabled?: boolean;
    wasm?: BrowserFontFallbackOptions['wasm'];
}
export declare function createCanvas2DRasterizer(options?: Canvas2DRasterizerOptions): (char: string, fontName: string, fontSize: number, bold: boolean, italic: boolean) => GlyphBitmap | null;
export {};
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