/** Floats per line instance. */
export declare const LINE_FLOATS_PER_INSTANCE = 12;
/** Bytes per line instance. */
export declare const LINE_BYTES_PER_INSTANCE: number;
export declare class LinePipeline {
    readonly pipeline: GPURenderPipeline;
    readonly bindGroupLayout: GPUBindGroupLayout;
    private device;
    private instanceBuffer;
    private instanceCapacity;
    private instanceData;
    private instanceCount;
    private constructor();
    /** Create the pipeline with its shader module and bind group layout. */
    static create(device: GPUDevice, format: GPUTextureFormat, _uniformBuffer: GPUBuffer): LinePipeline;
    /** Reset instance count for a new frame. */
    reset(): void;
    /** Push a solid line segment. */
    pushLine(x0: number, y0: number, x1: number, y1: number, r: number, g: number, b: number, a: number, width: number): void;
    /** Push a dashed line segment. */
    pushDashedLine(x0: number, y0: number, x1: number, y1: number, r: number, g: number, b: number, a: number, width: number, dashLen: number, gapLen: number): void;
    /** Upload instance data to GPU and return draw parameters. */
    flush(uniformBuffer: GPUBuffer): {
        bindGroup: GPUBindGroup;
        vertexCount: number;
        instanceCount: number;
    } | null;
    /** Release GPU resources. */
    destroy(): void;
    private _pushInstance;
    /** Grow the instance buffer and staging array if needed (power-of-two). */
    private _ensureCapacity;
}