import { Vec2 } from "../math/Vec2";
import { Vec4 } from "../math/Vec4";
import type { Renderer } from "./Renderer";
import type { Lookups } from "../font/types";
import type { TextAlign } from "../layout/styling";
export declare class WebGLRenderer implements Renderer {
    private readonly canvas;
    private readonly context;
    private readonly fontLookups;
    readonly gl: WebGL2RenderingContext;
    private readonly program;
    /**
     * Buffer using strides.
     *
     * - **Position** - In pixels `[0, width], [0, height]`.
     * - **UV** - In range `[0, 1]`.
     * - **Color** - In range `[0, 1]`.
     * - **Corner** - Bottom left corner. `new Vec2(-1, -1)` for non-rectangles.
     * - **Rectangle** size - In pixels. `new Vec2(-1, -1)` for non-rectangles.
     * - **Radius** - In pixels. Top, right, bottom, left. `new Vec4(-1, -1, -1, -1)` for
     * non-rectangles. - **Border width** - In pixels. Top, right, bottom, left. `new Vec4(-1, -1,
     * -1, -1)` for non-rectangles. - **Border color** - In range `[0, 1]`.
     */
    private vertexAttributes;
    private readonly fontAtlasTexture;
    private readonly vao;
    private readonly interleavedBuffer;
    /**
     * Updated in `clear()`.
     */
    private contextHeight;
    /**
     * Creates new context.
     */
    constructor(canvas: HTMLCanvasElement, context: WebGL2RenderingContext, fontLookups: Lookups, fontAtlasTexture: ImageBitmap);
    line(points: Array<Vec2>, thickness: number, color: Vec4): void;
    polygon(points: Array<Vec2>, color: Vec4): void;
    triangles(points: Array<Vec2>, color: Vec4): void;
    rectangle(color: Vec4, position: Vec2, size: Vec2, corners: Vec4, borderWidth: Vec4, borderColor: Vec4, clipStart: Vec2, clipSize: Vec2, clipCorners: Vec4): void;
    clear(): void;
    private setProjection;
    text(text: string, position: Vec2, fontName: string, fontSize: number, color: Vec4, textAlign: TextAlign, clipStart: Vec2, clipSize: Vec2, options?: {
        lineHeight?: number;
        maxWidth?: number;
        noWrap?: boolean;
    }): void;
    render(): void;
    private loadTexture;
    private setAttribute;
    private pushVertexData;
}