import { IComputeManagerInterface } from '../core/ComputeManagerInterface';
import { ImagePoolInterface } from '../core/ImagePoolInterface';
import { ImageWebGLTexture } from '../core/ImageWebGLTexture';
export interface IShaderInfo {
    id?: string;
    vertexFiles: string[];
    fragmentFiles: string[];
    inputNames?: string[];
}
export declare class Filter {
    protected shaders: IShaderInfo[];
    protected programs: WebGLProgram[];
    protected computeManager: IComputeManagerInterface;
    protected imagePool: ImagePoolInterface;
    protected LINEAR: number;
    constructor();
    /**
     * Sets up shaders
     */
    protected setupShaders(): void;
    /**
     * Runs the shader designated by id on the input texture and writes the result
     * to the output texture.
     *
     * This is a convenience method that handles the common single-input single-output case.
     *
     * @param id Number of the shader to run
     * @param input Input texture
     * @param output Output texture
     *
     * @return Output texture
     */
    protected runShader(id: number, input: ImageWebGLTexture, output: ImageWebGLTexture): ImageWebGLTexture;
    /**
     * Returns a unique identifier for a given shader.
     * @param shader Description of the shader
     * @return Unique identifier for the shader
     */
    private generateProgramId(shader);
}