import { ILayer } from '../layer/ILayerService';
import { IFramebuffer } from './IFramebuffer';
import { ITexture2D } from './ITexture2D';
export declare enum PassType {
    Normal = "normal",
    PostProcessing = "post-processing"
}
/**
 * Pass 分两类：
 * 1. 渲染相关 eg. ClearPass、RenderPass、PickingPass、ShadowPass
 * 2. PostProcessing eg. CopyPass、BlurPass
 * 另外考虑到 Pass 之间严格的执行顺序，render 方法必须是异步的
 */
export interface IPass<InitializationOptions> {
    getName(): string;
    getType(): PassType;
    init(layer: ILayer, config?: Partial<InitializationOptions>): void;
    render(layer: ILayer, tex?: ITexture2D): void;
}
/**
 * PostProcessing，自动切换 renderTarget
 * 例如最后一个 PostProcessingPass 自动切换 renderTarget 为屏幕
 */
export interface IPostProcessingPass<InitializationOptions> extends IPass<InitializationOptions> {
    setRenderToScreen(renderToScreen: boolean): void;
    setName(name: string): void;
    isEnabled(): boolean;
    setEnabled(enabled: boolean): void;
    updateOptions(config: Partial<InitializationOptions>): void;
}
export interface IPostProcessor {
    getReadFBO(): IFramebuffer;
    getWriteFBO(): IFramebuffer;
    resize(viewportWidth: number, viewportHeight: number): void;
    add<InitializationOptions>(pass: IPostProcessingPass<InitializationOptions>, layer: ILayer, config?: Partial<InitializationOptions>): void;
    render(layer: ILayer): Promise<unknown>;
    getPostProcessingPassByName(name: string): IPostProcessingPass<unknown> | undefined;
}
export interface IMultiPassRenderer {
    getPostProcessor(): IPostProcessor;
    resize(viewportWidth: number, viewportHeight: number): void;
    add<InitializationOptions>(pass: IPass<InitializationOptions>, config?: Partial<InitializationOptions>): void;
    render(): void;
    getRenderFlag(): boolean;
    setRenderFlag(enabled: boolean): void;
    setLayer(layer: ILayer): void;
    destroy(): void;
}