<!-- NEW3 — TEST 3 · THE RIVER'S JOURNEY · part 420 -->
 = _gl.createFramebuffer();
			_srcFramebuffer = _gl.createFramebuffer();
			_dstFramebuffer = _gl.createFramebuffer();

			info = new WebGLInfo( _gl );
			properties = new WebGLProperties();
			textures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );
			environments = new WebGLEnvironments( _this );
			attributes = new WebGLAttributes( _gl );
			bindingStates = new WebGLBindingStates( _gl, attributes );
			geometries = new WebGLGeometries( _gl, attributes, info, bindingStates );
			objects = new WebGLObjects( _gl, geometries, attributes, bindingStates, info );
			morphtargets = new WebGLMorphtargets( _gl, capabilities, textures );
			clipping = new WebGLClipping( properties );
			programCache = new WebGLPrograms( _this, environments, extensions, capabilities, bindingStates, clipping );
			materials = new WebGLMaterials( _this, properties );
			renderLists = new WebGLRenderLists();
			renderStates = new WebGLRenderStates( extensions );
			background = new WebGLBackground( _this, environments, state, objects, _alpha, premultipliedAlpha );
			shadowMap = new WebGLShadowMap( _this, objects, capabilities );
			uniformsGroups = new WebGLUniformsGroups( _gl, info, capabilities, state );

			bufferRenderer = new WebGLBufferRenderer( _gl, extensions, info );
			indexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info );

			info.programs = programCache.programs;

			/**
			 * Holds details about the capabilities of the current rendering context.
			 *
			 * @name WebGLRenderer#capabilities
			 * @type {WebGLRenderer~Capabilities}
			 */
			_this.capabilities = capabilities;

			/**
			 * Provides methods for retrieving and testing WebGL extensions.
			 *
			 * - `get(extensionName:string)`: Used to check whether a WebGL extension is supported
			 * and return the extension object if available.
			 * - `has(extensionName:string)`: returns `true` if the extension is supported.
			 *
			 * @name WebGLRenderer#extensions
			 * @type {Object}
			 */
			_this.extensions = extensions;

			/**
			 * Used to track properties of other objects like native WebGL objects.
			 *
			 * @name WebGLRenderer#properties
			 * @type {Object}
			 */
			_this.properties = properties;

			/**
			 * Manages the render lists of the renderer.
			 *
			 * @name WebGLRenderer#renderLists
			 * @type {Object}
			 */
			_this.renderLists = renderLists;


			/**
			 * Interface for managing shadows.
			 *
			 * @name WebGLRenderer#shadowMap
			 * @type {WebGLRenderer~ShadowMap}
			 */
			_this.shadowMap = shadowMap;

			/**
			 * Interface for managing the WebGL state.
			 *
			 * @name WebGLRenderer#state
			 * @type {Object}
			 */
			_this.state = state;

			/**
			 * Holds a series of statistical information about the GPU memory
			 * and the rendering process. Useful for debugging and monitoring.
			 *
			 * By default these data are reset at each render call but when having
			 * multiple render passes per frame (e.g. when using post processing) it can
			 * be preferred to reset with a custom pattern. First, set `autoReset` to
			 * `false`.
			 * ```js
			 * renderer.info.autoReset = false;
			 * ```
			 * Call `reset()` whenever you have finished to render a single frame.
			 * ```js
			 * renderer.info.reset();
			 * ```
			 *
			 * @name WebGLRenderer#info
			 * @type {WebGLRenderer~Info}
			 */
			_this.info = info;

		}

		// initialize internal render target for non-UnsignedByteType color buffer

		if ( _outputBufferType !== UnsignedByteType ) {

			output = new WebGLOutput( _outputBufferType, canvas.width, canvas.height, antialias, depth, stencil );

		}

		// xr

		const xr = new WebXRManager( _this, _gl );

		/**
		 * A reference to the XR manager.
		 *
		 * @type {WebXRManager}
		 */
		this.xr = xr;

		/**
		 * Returns the rendering context.
		 *
		 * @return {WebGL2RenderingContext} The rendering context.
		 */
		this.getContext = function () {

			return _gl;

		};

		/**
		 * Returns the rendering context attributes.
		 *
		 * @return {WebGLContextAttributes} The rendering context attributes.
		 */
		this.getContextAttributes = function () {

			return _gl.getContextAttributes();

		};

		/**
		 * Simulates a loss of the WebGL context. This requires support for the `WEBGL_lose_context` extension.
		 */
		this.forceContextLoss = function () {

			const extension = extensions.get( 'WEBGL_lose_context' );
			if ( extension ) extension.loseContext();

		};

		/**
		 * Simulates a restore of the WebGL context. This requires support for the `WEBGL_lose_context` extension.
		 */
		this.forceContextRestore = function () {

			const extension = extensions.get( 'WEBGL_lose_context' );
			if ( extension ) extension.restoreContext();

		};

		/**
		 * Returns the pixel ratio.
		 *
		 * @return {number} The pixel ratio.
		 */
		this.getPixelRatio = function () {

			return _pixelRatio;

		};

		/**
		 * Sets the given pix