/**
 * Texture atlas generator for GPU font rendering
 *
 * Packs multiple glyph bitmaps into a single texture atlas
 * using shelf/skyline bin packing algorithm.
 */
import type { Font } from "../font/font.ts";
import { type AtlasOptions, type GlyphAtlas } from "./types.ts";
/**
 * Build a texture atlas from a set of glyphs
 */
export declare function buildAtlas(font: Font, glyphIds: number[], options: AtlasOptions): GlyphAtlas;
/**
 * Build atlas for ASCII printable characters (32-126)
 */
export declare function buildAsciiAtlas(font: Font, options: AtlasOptions): GlyphAtlas;
/**
 * Build atlas for a specific string (including all unique glyphs)
 */
export declare function buildStringAtlas(font: Font, text: string, options: AtlasOptions): GlyphAtlas;
/**
 * Export atlas to formats suitable for GPU upload
 */
export declare function atlasToRGBA(atlas: GlyphAtlas): Uint8Array;
/**
 * Export atlas as single-channel alpha texture
 */
export declare function atlasToAlpha(atlas: GlyphAtlas): Uint8Array;
/**
 * Get UV coordinates for a glyph in the atlas
 */
export declare function getGlyphUV(atlas: GlyphAtlas, glyphId: number): {
    u0: number;
    v0: number;
    u1: number;
    v1: number;
} | null;