import { List } from "../longan/gs.collections";
import { IRenderContext, RenderTarget, Texture2d, WebGL2RenderContext } from "./renderContext";
import { EventArgs } from "../events";
import { Segment } from "../longan/segment";
import { Viewer } from "../viewer";
export declare class RenderPass {
    typeName: string;
    protected viewer: Viewer;
    protected renderContext: IRenderContext;
    constructor();
    _executeInit(viewer: Viewer, args: EventArgs): void;
    _executeFina(viewer: Viewer, args: EventArgs): void;
    _executeRender(deltaSeconds: number): void;
    protected onInit(viewer: Viewer, args: EventArgs): void;
    protected onFina(viewer: Viewer, args: EventArgs): void;
    protected beginRender(): void;
    protected endRender(): void;
    protected render(deltaSeconds: number): void;
}
export declare class RenderPassCollection {
    get owner(): Viewer;
    get renderTarget(): RenderTarget;
    set renderTarget(value: RenderTarget);
    get colorTexture(): Texture2d;
    set colorTexture(value: Texture2d);
    get depthTexture(): Texture2d;
    set depthTexture(value: Texture2d);
    protected _renderTarget: RenderTarget;
    protected _colorTexture: Texture2d;
    protected _depthTexture: Texture2d;
    private _owner;
    _renderPassList: List<RenderPass>;
    constructor(owner: Viewer);
    add(renderPass: RenderPass): void;
    insert(index: number, renderPass: RenderPass): void;
    addPostProcess(renderPass: RenderPass): void;
    remove(renderPass: RenderPass | string): void;
    clear(): void;
    indexOf(renderPass: RenderPass): number;
    find<T>(type: string): T;
    has(type: string): boolean;
}
export declare class PreRenderPass extends RenderPass {
    protected rc: WebGL2RenderContext;
    private resizeEvent;
    constructor();
    protected onInit(viewer: Viewer, args: EventArgs): void;
    protected onFina(viewer: Viewer, args: EventArgs): void;
    protected beginRender(): void;
    protected endRender(): void;
    protected render(deltaSeconds: number): void;
}
export declare class UpdateViewPass extends RenderPass {
    typeName: string;
    private _viewSegment;
    constructor(viewSegment: Segment);
    protected render(deltaSeconds: number): void;
    invokeRender(deltaSeconds: number): void;
}