https://github.com/WWBN/AVideo/issues/8713

node_modules/three/examples/jsm/nodes/inputs/RTTNode.js

@@ -0,0 +1,154 @@
+import {
+	Mesh,
+	OrthographicCamera,
+	PlaneGeometry,
+	Scene,
+	WebGLRenderTarget
+} from '../../../../build/three.module.js';
+
+import { NodeBuilder } from '../core/NodeBuilder.js';
+import { NodeMaterial } from '../materials/NodeMaterial.js';
+import { TextureNode } from './TextureNode.js';
+
+function RTTNode( width, height, input, options ) {
+
+	options = options || {};
+
+	this.input = input;
+
+	this.clear = options.clear !== undefined ? options.clear : true;
+
+	this.renderTarget = new WebGLRenderTarget( width, height, options );
+
+	this.material = new NodeMaterial();
+
+	this.camera = new OrthographicCamera( - 1, 1, 1, - 1, 0, 1 );
+	this.scene = new Scene();
+
+	this.quad = new Mesh( new PlaneGeometry( 2, 2 ), this.material );
+	this.quad.frustumCulled = false; // Avoid getting clipped
+	this.scene.add( this.quad );
+
+	this.render = true;
+
+	TextureNode.call( this, this.renderTarget.texture );
+
+}
+
+RTTNode.prototype = Object.create( TextureNode.prototype );
+RTTNode.prototype.constructor = RTTNode;
+RTTNode.prototype.nodeType = 'RTT';
+
+RTTNode.prototype.build = function ( builder, output, uuid ) {
+
+	var rttBuilder = new NodeBuilder();
+	rttBuilder.nodes = builder.nodes;
+	rttBuilder.updaters = builder.updaters;
+
+	this.material.fragment.value = this.input;
+	this.material.build( { builder: rttBuilder } );
+
+	return TextureNode.prototype.build.call( this, builder, output, uuid );
+
+};
+
+RTTNode.prototype.updateFramesaveTo = function ( frame ) {
+
+	this.saveTo.render = false;
+
+	if ( this.saveTo !== this.saveToCurrent ) {
+
+		if ( this.saveToMaterial ) this.saveToMaterial.dispose();
+
+		var material = new NodeMaterial();
+		material.fragment.value = this;
+		material.build();
+
+		var scene = new Scene();
+
+		var quad = new Mesh( new PlaneGeometry( 2, 2 ), material );
+		quad.frustumCulled = false; // Avoid getting clipped
+		scene.add( quad );
+
+		this.saveToScene = scene;
+		this.saveToMaterial = material;
+
+	}
+
+	this.saveToCurrent = this.saveTo;
+
+	frame.renderer.setRenderTarget( this.saveTo.renderTarget );
+	if ( this.saveTo.clear ) frame.renderer.clear();
+	frame.renderer.render( this.saveToScene, this.camera );
+
+};
+
+RTTNode.prototype.updateFrame = function ( frame ) {
+
+	if ( frame.renderer ) {
+
+		// from the second frame
+
+		if ( this.saveTo && this.saveTo.render === false ) {
+
+			this.updateFramesaveTo( frame );
+
+		}
+
+		if ( this.render ) {
+
+			if ( this.material.uniforms.renderTexture ) {
+
+				this.material.uniforms.renderTexture.value = frame.renderTexture;
+
+			}
+
+			frame.renderer.setRenderTarget( this.renderTarget );
+			if ( this.clear ) frame.renderer.clear();
+			frame.renderer.render( this.scene, this.camera );
+
+		}
+
+		// first frame
+
+		if ( this.saveTo && this.saveTo.render === true ) {
+
+			this.updateFramesaveTo( frame );
+
+		}
+
+	} else {
+
+		console.warn( 'RTTNode need a renderer in NodeFrame' );
+
+	}
+
+};
+
+RTTNode.prototype.copy = function ( source ) {
+
+	TextureNode.prototype.copy.call( this, source );
+
+	this.saveTo = source.saveTo;
+
+	return this;
+
+};
+
+RTTNode.prototype.toJSON = function ( meta ) {
+
+	var data = this.getJSONNode( meta );
+
+	if ( ! data ) {
+
+		data = TextureNode.prototype.toJSON.call( this, meta );
+
+		if ( this.saveTo ) data.saveTo = this.saveTo.toJSON( meta ).uuid;
+
+	}
+
+	return data;
+
+};
+
+export { RTTNode };