import { WebGLRendererBase } from './webgl-base.ts';
import type { ASSImage } from '../util.ts';
export declare class WebGL1Renderer extends WebGLRendererBase<WebGLRenderingContext> {
    instancedArraysExt: ANGLE_instanced_arrays;
    u_tex: WebGLUniformLocation | null;
    u_atlasSize: WebGLUniformLocation | null;
    a_quadPos: number;
    a_destRect: number;
    a_srcXY: number;
    a_color: number;
    quadPosBuffer: WebGLBuffer;
    instanceDestRectBuffer: WebGLBuffer;
    instanceSrcBuffer: WebGLBuffer;
    instanceColorBuffer: WebGLBuffer;
    instanceDestRectData: Float32Array<ArrayBuffer>;
    instanceSrcData: Float32Array<ArrayBuffer>;
    instanceColorData: Float32Array<ArrayBuffer>;
    instanceCapacity: number;
    atlasPages: WebGLTexture[];
    atlasSize: number;
    maxTextureSize: number;
    uploadCache: Set<string>;
    tightData: Uint8Array | null;
    constructor(canvas: OffscreenCanvas);
    _initGL(): void;
    ensureInstanceCapacity(count: number): void;
    createAtlasPage(size: number): WebGLTexture;
    ensureAtlas(size: number, pages: number): void;
    render(images: ASSImage[], heap: Uint8Array): void;
    destroy(): void;
}