Babylon.js/src/PostProcess/filterPostProcess.ts

import { Nullable } from "types";
import { Matrix } from "Math";
import { Camera } from "Cameras";
import { Effect } from "Materials";
import { PostProcess, PostProcessOptions } from "PostProcess";
import { Engine } from "Engine";
    /**
     * Applies a kernel filter to the image
     */
    export class FilterPostProcess extends PostProcess {
        /**
         *
         * @param name The name of the effect.
         * @param kernelMatrix The matrix to be applied to the image
         * @param options The required width/height ratio to downsize to before computing the render pass.
         * @param camera The camera to apply the render pass to.
         * @param samplingMode The sampling mode to be used when computing the pass. (default: 0)
         * @param engine The engine which the post process will be applied. (default: current engine)
         * @param reusable If the post process can be reused on the same frame. (default: false)
         */
        constructor(name: string,
            /** The matrix to be applied to the image */
            public kernelMatrix: Matrix,
            options: number | PostProcessOptions,
            camera: Nullable<Camera>,
            samplingMode?: number,
            engine?: Engine,
            reusable?: boolean
        ) {
            super(name, "filter", ["kernelMatrix"], null, options, camera, samplingMode, engine, reusable);

            this.onApply = (effect: Effect) => {
                effect.setMatrix("kernelMatrix", this.kernelMatrix);
            };
        }
    }