import { type Matrix4x4 } from './mat4';
export declare class Renderer {
    gl: WebGL2RenderingContext;
    program: WebGLProgram;
    vao: WebGLVertexArrayObject;
    quadVBO: WebGLBuffer;
    instanceVBO: WebGLBuffer;
    maxInstances: number;
    instanceStride: number;
    instanceData: Float32Array;
    instanceCount: number;
    uProjectionMatrix: WebGLUniformLocation | null;
    maskDepth: number;
    projectionMatrix: Matrix4x4;
    constructor(width: number, height: number, canvas: HTMLCanvasElement, maxInstances?: number);
    set_viewport(w: number, h: number): void;
    pushMask(): void;
    endMask(): void;
    popMask(): void;
    private createVAO;
    setupInstancing(): void;
    addInstance(data: Float32Array): void;
    flush(): void;
    private createProgram;
    cleanup(): void;
}
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