import type { ClearOrBool } from './const';
import type { GlExtensions, GlRenderingContext, GlTarget } from './types';
import { Renderer } from '../shared';
import { GlBufferSystem } from './buffer';
import { GlGeometrySystem } from './geometry';
import { GlBatch2DSystem } from './GlBatch2DSystem';
import { GlColorMaskSystem } from './GlColorMaskSystem';
import { GlMaskSystem } from './GlMaskSystem';
import { GlScissorSystem } from './GlScissorSystem';
import { GlStencilSystem } from './GlStencilSystem';
import { GlViewportSystem } from './GlViewportSystem';
import { GlRenderTargetSystem } from './renderTarget';
import { GlShaderSystem } from './shader';
import { GlStateSystem } from './state';
import { GlTextureSystem } from './texture';
export interface GlRenderer {
    texture: GlTextureSystem;
    buffer: GlBufferSystem;
    shader: GlShaderSystem;
    geometry: GlGeometrySystem;
    renderTarget: GlRenderTargetSystem;
    state: GlStateSystem;
    mask: GlMaskSystem;
    colorMask: GlColorMaskSystem;
    stencil: GlStencilSystem;
    scissor: GlScissorSystem;
    batch2D: GlBatch2DSystem;
    viewport: GlViewportSystem;
}
export declare class GlRenderer extends Renderer {
    contextLost: boolean;
    gl: GlRenderingContext;
    version: 1 | 2;
    extensions: GlExtensions;
    protected _systems: (GlShaderSystem | GlTextureSystem | GlGeometrySystem | GlBufferSystem | GlStateSystem | GlBatch2DSystem | GlColorMaskSystem | GlMaskSystem | GlRenderTargetSystem | GlScissorSystem | GlStencilSystem | GlViewportSystem)[];
    readonly bindPoints: Map<number, GlTarget>;
    readonly supports: {
        uint32Indices: boolean;
        uniformBufferObject: boolean;
        vertexArrayObject: boolean;
        srgbTextures: boolean;
        nonPowOf2wrapping: boolean;
        msaa: boolean;
        nonPowOf2mipmaps: boolean;
    };
    constructor(view?: HTMLCanvasElement | WebGLRenderingContext | WebGL2RenderingContext, options?: WebGLContextAttributes);
    protected _setupContext(view: HTMLCanvasElement, options?: WebGLContextAttributes): this;
    protected _setupExtensions(): this;
    protected _setupSupports(): this;
    protected _setupBindPoints(): this;
    /**
     * Setup polyfill
     *
     * @protected
     */
    protected _setupPolyfill(): this;
    protected _contextLost(event: WebGLContextEvent): void;
    protected _contextRestored(): void;
    resize(width: number, height: number, updateStyle?: boolean): void;
    clear(clear?: ClearOrBool): void;
    reset(): void;
    flush(): void;
    destroy(): void;
    toPixels(x?: number, y?: number, width?: number, height?: number): Uint8ClampedArray<ArrayBuffer>;
}