import { type InitializationData, type SmartFilter } from "../smartFilter.js";
import { ConnectionPointType } from "../connection/connectionPointType.js";
import { BaseBlock } from "./baseBlock.js";
import { type Nullable } from "@onerjs/core/types.js";
import { type RenderTargetWrapper } from "@onerjs/core/Engines/renderTargetWrapper.js";
/**
 * The output block of a smart filter.
 *
 * Only the smart filter will internally create and host the output block.
 * It should not be exported through the main index.ts module.
 */
export declare class OutputBlock extends BaseBlock {
    /**
     * The class name of the block.
     */
    static ClassName: string;
    /**
     * Input connection point of the output block.
     * This takes a texture as input.
     */
    readonly input: import("../index.js").ConnectionPoint<ConnectionPointType.Texture>;
    /**
     * If supplied, the Smart Filter will render into this RenderTargetWrapper. Otherwise, it renders
     * into the the canvas or WebGL context the ThinEngine is using for rendering.
     */
    renderTargetWrapper: Nullable<RenderTargetWrapper>;
    /**
     * Create a new output block.
     * @param smartFilter - The smart filter this block belongs to
     */
    constructor(smartFilter: SmartFilter);
    /**
     * Prepares all blocks for runtime by traversing the graph.
     */
    prepareForRuntime(): void;
    /**
     * Propagates the runtime data for all graph blocks.
     */
    propagateRuntimeData(): void;
    /**
     * Generates the commands needed to execute the block at runtime and gathers promises for initialization work
     * @param initializationData - The initialization data to use
     * @param finalOutput - Defines if the block is the final output of the smart filter
     */
    generateCommandsAndGatherInitPromises(initializationData: InitializationData, finalOutput: boolean): void;
}
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