diff --git a/examples/webxr_xr_ballshooter.html b/examples/webxr_xr_ballshooter.html
index e004525b3dce12..1a437ae613e7e0 100644
--- a/examples/webxr_xr_ballshooter.html
+++ b/examples/webxr_xr_ballshooter.html
@@ -67,7 +67,7 @@
 
 				//
 
-				renderer = new THREE.WebGLRenderer( { antialias: true } );
+				renderer = new THREE.WebGLRenderer( { antialias: true, multiviewStereo: true } );
 				renderer.setPixelRatio( window.devicePixelRatio );
 				renderer.setSize( window.innerWidth, window.innerHeight );
 				renderer.setAnimationLoop( render );
diff --git a/src/renderers/WebGLMultiviewRenderTarget.js b/src/renderers/WebGLMultiviewRenderTarget.js
new file mode 100644
index 00000000000000..016d40ecf09ddd
--- /dev/null
+++ b/src/renderers/WebGLMultiviewRenderTarget.js
@@ -0,0 +1,35 @@
+/**
+ * @author fernandojsg / http://fernandojsg.com
+ * @author Takahiro https://github.com/takahirox
+ */
+
+import { WebGLRenderTarget } from './WebGLRenderTarget.js';
+
+class WebGLMultiviewRenderTarget extends WebGLRenderTarget {
+
+	constructor( width, height, numViews, options = {} ) {
+
+		super( width, height, options );
+
+		this.depthBuffer = false;
+		this.stencilBuffer = false;
+
+		this.numViews = numViews;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.numViews = source.numViews;
+
+		return this;
+
+	}
+
+}
+
+WebGLMultiviewRenderTarget.prototype.isWebGLMultiviewRenderTarget = true;
+
+export { WebGLMultiviewRenderTarget };
diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index 377e784e1403b9..7be08d69ae95fd 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -46,6 +46,7 @@ import { WebGLGeometries } from './webgl/WebGLGeometries.js';
 import { WebGLIndexedBufferRenderer } from './webgl/WebGLIndexedBufferRenderer.js';
 import { WebGLInfo } from './webgl/WebGLInfo.js';
 import { WebGLMorphtargets } from './webgl/WebGLMorphtargets.js';
+import { WebGLMultiview } from './webgl/WebGLMultiview.js';
 import { WebGLObjects } from './webgl/WebGLObjects.js';
 import { WebGLPrograms } from './webgl/WebGLPrograms.js';
 import { WebGLProperties } from './webgl/WebGLProperties.js';
@@ -79,6 +80,7 @@ class WebGLRenderer {
 			preserveDrawingBuffer = false,
 			powerPreference = 'default',
 			failIfMajorPerformanceCaveat = false,
+			multiviewStereo = false,
 		} = parameters;
 
 		this.isWebGLRenderer = true;
@@ -313,6 +315,7 @@ class WebGLRenderer {
 		let extensions, capabilities, state, info;
 		let properties, textures, cubemaps, cubeuvmaps, attributes, geometries, objects;
 		let programCache, materials, renderLists, renderStates, clipping, shadowMap;
+		let multiview;
 
 		let background, morphtargets, bufferRenderer, indexedBufferRenderer;
 
@@ -346,6 +349,7 @@ class WebGLRenderer {
 			renderLists = new WebGLRenderLists();
 			renderStates = new WebGLRenderStates( extensions, capabilities );
 			background = new WebGLBackground( _this, cubemaps, cubeuvmaps, state, objects, _alpha, premultipliedAlpha );
+			multiview = new WebGLMultiview( _this, extensions, _gl );
 			shadowMap = new WebGLShadowMap( _this, objects, capabilities );
 			uniformsGroups = new WebGLUniformsGroups( _gl, info, capabilities, state );
 
@@ -368,7 +372,7 @@ class WebGLRenderer {
 
 		// xr
 
-		const xr = ( typeof navigator !== 'undefined' && 'xr' in navigator ) ? new WebXRManager( _this, _gl ) : new WebVRManager( _this );
+		const xr = ( typeof navigator !== 'undefined' && 'xr' in navigator ) ? new WebXRManager( _this, _gl, extensions, multiviewStereo ) : new WebVRManager( _this );
 
 		this.xr = xr;
 
@@ -1218,13 +1222,23 @@ class WebGLRenderer {
 
 			if ( camera.isArrayCamera ) {
 
-				const cameras = camera.cameras;
+				if ( xr.enabled && xr.isMultiview ) {
 
-				for ( let i = 0, l = cameras.length; i < l; i ++ ) {
+					textures.setDeferTextureUploads( true );
 
-					const camera2 = cameras[ i ];
+					renderScene( currentRenderList, scene, camera, camera.cameras[ 0 ].viewport );
 
-					renderScene( currentRenderList, scene, camera2, camera2.viewport );
+				} else {
+
+					const cameras = camera.cameras;
+
+					for ( let i = 0, l = cameras.length; i < l; i ++ ) {
+
+						const camera2 = cameras[ i ];
+
+						renderScene( currentRenderList, scene, camera2, camera2.viewport );
+
+					}
 
 				}
 
@@ -1252,6 +1266,8 @@ class WebGLRenderer {
 
 			if ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );
 
+			textures.runDeferredUploads();
+
 			if ( xr.enabled && xr.submitFrame ) {
 
 				xr.submitFrame();
@@ -1738,6 +1754,7 @@ class WebGLRenderer {
 			materialProperties.vertexAlphas = parameters.vertexAlphas;
 			materialProperties.vertexTangents = parameters.vertexTangents;
 			materialProperties.toneMapping = parameters.toneMapping;
+			materialProperties.numMultiviewViews = parameters.numMultiviewViews;
 
 		}
 
@@ -1769,6 +1786,8 @@ class WebGLRenderer {
 
 			}
 
+			const numMultiviewViews = _currentRenderTarget && _currentRenderTarget.isWebGLMultiviewRenderTarget ? _currentRenderTarget.numViews : 0;
+
 			const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
 			const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;
 
@@ -1880,6 +1899,10 @@ class WebGLRenderer {
 
 					needsProgramChange = true;
 
+				} else if ( materialProperties.numMultiviewViews !== numMultiviewViews ) {
+
+					needsProgramChange = true;
+
 				}
 
 			} else {
@@ -1926,8 +1949,17 @@ class WebGLRenderer {
 
 				// common camera uniforms
 
-				p_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );
-				p_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );
+				if ( program.numMultiviewViews > 0 ) {
+
+					multiview.updateCameraProjectionMatricesUniform( camera, p_uniforms );
+					multiview.updateCameraViewMatricesUniform( camera, p_uniforms );
+
+				} else {
+
+					p_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );
+					p_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );
+
+				}
 
 				const uCamPos = p_uniforms.map.cameraPosition;
 
@@ -2081,8 +2113,17 @@ class WebGLRenderer {
 
 			// common matrices
 
-			p_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );
-			p_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );
+			if ( program.numMultiviewViews > 0 ) {
+
+				multiview.updateObjectMatricesUniforms( object, camera, p_uniforms );
+
+			} else {
+
+				p_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );
+				p_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );
+
+			}
+
 			p_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );
 
 			// UBOs
@@ -2192,20 +2233,16 @@ class WebGLRenderer {
 			const renderTargetProperties = properties.get( renderTarget );
 			renderTargetProperties.__hasExternalTextures = true;
 
-			if ( renderTargetProperties.__hasExternalTextures ) {
+			renderTargetProperties.__autoAllocateDepthBuffer = depthTexture === undefined;
 
-				renderTargetProperties.__autoAllocateDepthBuffer = depthTexture === undefined;
+			if ( ! renderTargetProperties.__autoAllocateDepthBuffer && ! _currentRenderTarget.isWebGLMultiviewRenderTarget ) {
 
-				if ( ! renderTargetProperties.__autoAllocateDepthBuffer ) {
+				// The multisample_render_to_texture extension doesn't work properly if there
+				// are midframe flushes and an external depth buffer. Disable use of the extension.
+				if ( extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true ) {
 
-					// The multisample_render_to_texture extension doesn't work properly if there
-					// are midframe flushes and an external depth buffer. Disable use of the extension.
-					if ( extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true ) {
-
-						console.warn( 'THREE.WebGLRenderer: Render-to-texture extension was disabled because an external texture was provided' );
-						renderTargetProperties.__useRenderToTexture = false;
-
-					}
+					console.warn( 'THREE.WebGLRenderer: Render-to-texture extension was disabled because an external texture was provided' );
+					renderTargetProperties.__useRenderToTexture = false;
 
 				}
 
diff --git a/src/renderers/webgl/WebGLBackground.js b/src/renderers/webgl/WebGLBackground.js
index c236a0c2039a89..90e68c50a43666 100644
--- a/src/renderers/webgl/WebGLBackground.js
+++ b/src/renderers/webgl/WebGLBackground.js
@@ -68,7 +68,7 @@ function WebGLBackground( renderer, cubemaps, cubeuvmaps, state, objects, alpha,
 			if ( boxMesh === undefined ) {
 
 				boxMesh = new Mesh(
-					new BoxGeometry( 1, 1, 1 ),
+					new BoxGeometry( 10000, 10000, 10000 ),
 					new ShaderMaterial( {
 						name: 'BackgroundCubeMaterial',
 						uniforms: cloneUniforms( ShaderLib.backgroundCube.uniforms ),
diff --git a/src/renderers/webgl/WebGLMultiview.js b/src/renderers/webgl/WebGLMultiview.js
new file mode 100644
index 00000000000000..4e7d581012e39f
--- /dev/null
+++ b/src/renderers/webgl/WebGLMultiview.js
@@ -0,0 +1,100 @@
+/**
+ * @author fernandojsg / http://fernandojsg.com
+ * @author Takahiro https://github.com/takahirox
+ */
+import { Matrix3 } from '../../math/Matrix3.js';
+import { Matrix4 } from '../../math/Matrix4.js';
+
+class WebGLMultiview {
+
+	 constructor( renderer, extensions, gl ) {
+
+		 this.renderer = renderer;
+
+		 this.DEFAULT_NUMVIEWS = 2;
+		 this.maxNumViews = 0;
+		 this.gl = gl;
+
+		 this.extensions = extensions;
+
+		 this.available = this.extensions.has( 'OCULUS_multiview' );
+
+		 if ( this.available ) {
+
+			 const extension = this.extensions.get( 'OCULUS_multiview' );
+
+			 this.maxNumViews = this.gl.getParameter( extension.MAX_VIEWS_OVR );
+
+			 this.mat4 = [];
+			 this.mat3 = [];
+			 this.cameraArray = [];
+
+			 for ( var i = 0; i < this.maxNumViews; i ++ ) {
+
+				 this.mat4[ i ] = new Matrix4();
+				 this.mat3[ i ] = new Matrix3();
+
+			 }
+
+		 }
+
+	 }
+
+	 //
+	 getCameraArray( camera ) {
+
+		 if ( camera.isArrayCamera ) return camera.cameras;
+
+		 this.cameraArray[ 0 ] = camera;
+
+		 return this.cameraArray;
+
+	 }
+
+	 updateCameraProjectionMatricesUniform( camera, uniforms ) {
+
+		 var cameras = this.getCameraArray( camera );
+
+		 for ( var i = 0; i < cameras.length; i ++ ) {
+
+			 this.mat4[ i ].copy( cameras[ i ].projectionMatrix );
+
+		 }
+
+		 uniforms.setValue( this.gl, 'projectionMatrices', this.mat4 );
+
+	 }
+
+	 updateCameraViewMatricesUniform( camera, uniforms ) {
+
+		 var cameras = this.getCameraArray( camera );
+
+		 for ( var i = 0; i < cameras.length; i ++ ) {
+
+			 this.mat4[ i ].copy( cameras[ i ].matrixWorldInverse );
+
+		 }
+
+		 uniforms.setValue( this.gl, 'viewMatrices', this.mat4 );
+
+	 }
+
+	 updateObjectMatricesUniforms( object, camera, uniforms ) {
+
+		 var cameras = this.getCameraArray( camera );
+
+		 for ( var i = 0; i < cameras.length; i ++ ) {
+
+			 this.mat4[ i ].multiplyMatrices( cameras[ i ].matrixWorldInverse, object.matrixWorld );
+			 this.mat3[ i ].getNormalMatrix( this.mat4[ i ] );
+
+		 }
+
+		 uniforms.setValue( this.gl, 'modelViewMatrices', this.mat4 );
+		 uniforms.setValue( this.gl, 'normalMatrices', this.mat3 );
+
+	 }
+
+}
+
+export { WebGLMultiview };
diff --git a/src/renderers/webgl/WebGLProgram.js b/src/renderers/webgl/WebGLProgram.js
index 093460ad92b97f..c635498c9c3f65 100644
--- a/src/renderers/webgl/WebGLProgram.js
+++ b/src/renderers/webgl/WebGLProgram.js
@@ -474,6 +474,8 @@ function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {
 	let prefixVertex, prefixFragment;
 	let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\n' : '';
 
+	const numMultiviewViews = parameters.numMultiviewViews;
+
 	if ( parameters.isRawShaderMaterial ) {
 
 		prefixVertex = [
@@ -884,6 +886,53 @@ function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {
 			'#define textureCubeGradEXT textureGrad'
 		].join( '\n' ) + '\n' + prefixFragment;
 
+		// Multiview
+
+		if ( numMultiviewViews > 0 ) {
+
+			// TODO: fix light transforms here?
+
+			prefixVertex = 	[
+				'#extension GL_OVR_multiview : require',
+				'layout(num_views = ' + numMultiviewViews + ') in;',
+				'#define VIEW_ID gl_ViewID_OVR'
+			].join( '\n' ) + '\n' + prefixVertex;
+
+			prefixVertex = prefixVertex.replace(
+				[
+					'uniform mat4 modelViewMatrix;',
+					'uniform mat4 projectionMatrix;',
+					'uniform mat4 viewMatrix;',
+					'uniform mat3 normalMatrix;'
+				].join( '\n' ),
+				[
+					'uniform mat4 modelViewMatrices[' + numMultiviewViews + '];',
+					'uniform mat4 projectionMatrices[' + numMultiviewViews + '];',
+					'uniform mat4 viewMatrices[' + numMultiviewViews + '];',
+					'uniform mat3 normalMatrices[' + numMultiviewViews + '];',
+
+					'#define modelViewMatrix modelViewMatrices[VIEW_ID]',
+					'#define projectionMatrix projectionMatrices[VIEW_ID]',
+					'#define viewMatrix viewMatrices[VIEW_ID]',
+					'#define normalMatrix normalMatrices[VIEW_ID]'
+				].join( '\n' )
+			);
+
+			prefixFragment = [
+				'#extension GL_OVR_multiview : require',
+				'#define VIEW_ID gl_ViewID_OVR'
+			].join( '\n' ) + '\n' + prefixFragment;
+
+			prefixFragment = prefixFragment.replace(
+				'uniform mat4 viewMatrix;',
+				[
+					'uniform mat4 viewMatrices[' + numMultiviewViews + '];',
+					'#define viewMatrix viewMatrices[VIEW_ID]'
+				].join( '\n' )
+			);
+
+		}
+
 	}
 
 	const vertexGlsl = versionString + prefixVertex + vertexShader;
@@ -1074,6 +1123,7 @@ function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {
 	this.program = program;
 	this.vertexShader = glVertexShader;
 	this.fragmentShader = glFragmentShader;
+	this.numMultiviewViews = numMultiviewViews;
 
 	return this;
 
diff --git a/src/renderers/webgl/WebGLPrograms.js b/src/renderers/webgl/WebGLPrograms.js
index 060a6b6da734dc..52770a54061517 100644
--- a/src/renderers/webgl/WebGLPrograms.js
+++ b/src/renderers/webgl/WebGLPrograms.js
@@ -107,6 +107,8 @@ function WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities
 
 		const currentRenderTarget = renderer.getRenderTarget();
 
+		const numMultiviewViews = currentRenderTarget && currentRenderTarget.isWebGLMultiviewRenderTarget ? currentRenderTarget.numViews : 0;
+
 		const IS_INSTANCEDMESH = object.isInstancedMesh === true;
 		const IS_BATCHEDMESH = object.isBatchedMesh === true;
 
@@ -199,6 +201,7 @@ function WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities
 			instancingColor: IS_INSTANCEDMESH && object.instanceColor !== null,
 
 			supportsVertexTextures: SUPPORTS_VERTEX_TEXTURES,
+			numMultiviewViews: numMultiviewViews,
 			outputColorSpace: ( currentRenderTarget === null ) ? renderer.outputColorSpace : ( currentRenderTarget.isXRRenderTarget === true ? currentRenderTarget.texture.colorSpace : LinearSRGBColorSpace ),
 
 			map: HAS_MAP,
@@ -552,6 +555,8 @@ function WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities
 			_programLayers.enable( 18 );
 		if ( parameters.decodeVideoTexture )
 			_programLayers.enable( 19 );
+		if ( parameters.numMultiviewViews )
+			_programLayers.enable( 20 );
 
 		array.push( _programLayers.mask );
 
diff --git a/src/renderers/webgl/WebGLTextures.js b/src/renderers/webgl/WebGLTextures.js
index c16017e03c5ab9..46e2145ed5bcdc 100644
--- a/src/renderers/webgl/WebGLTextures.js
+++ b/src/renderers/webgl/WebGLTextures.js
@@ -9,12 +9,16 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 	const isWebGL2 = capabilities.isWebGL2;
 	const multisampledRTTExt = extensions.has( 'WEBGL_multisampled_render_to_texture' ) ? extensions.get( 'WEBGL_multisampled_render_to_texture' ) : null;
 	const supportsInvalidateFramebuffer = typeof navigator === 'undefined' ? false : /OculusBrowser/g.test( navigator.userAgent );
+	const multiviewExt = extensions.has( 'OCULUS_multiview' ) ? extensions.get( 'OCULUS_multiview' ) : null;
 
 	const _videoTextures = new WeakMap();
 	let _canvas;
 
 	const _sources = new WeakMap(); // maps WebglTexture objects to instances of Source
 
+	let _deferredUploads = [];
+	let _deferTextureUploads = false;
+
 	// cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,
 	// also OffscreenCanvas.getContext("webgl"), but not OffscreenCanvas.getContext("2d")!
 	// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).
@@ -482,8 +486,11 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 			} else {
 
-				uploadTexture( textureProperties, texture, slot );
-				return;
+				if ( uploadTexture( textureProperties, texture, slot ) ) {
+
+					return;
+
+				}
 
 			}
 
@@ -716,8 +723,45 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 	}
 
+	function setDeferTextureUploads( deferFlag ) {
+
+		_deferTextureUploads = deferFlag;
+
+	}
+
+	function runDeferredUploads() {
+
+		const previousDeferSetting = _deferTextureUploads;
+		_deferTextureUploads = false;
+
+		for ( const upload of _deferredUploads ) {
+
+			uploadTexture( upload.textureProperties, upload.texture, upload.slot );
+			upload.texture.isPendingDeferredUpload = false;
+
+		}
+
+		_deferredUploads = [];
+
+		_deferTextureUploads = previousDeferSetting;
+
+	}
+
 	function uploadTexture( textureProperties, texture, slot ) {
 
+		if ( _deferTextureUploads ) {
+
+			if ( ! texture.isPendingDeferredUpload ) {
+
+				texture.isPendingDeferredUpload = true;
+				_deferredUploads.push( { textureProperties: textureProperties, texture: texture, slot: slot } );
+
+			}
+
+			return false;
+
+		}
+
 		let textureType = _gl.TEXTURE_2D;
 
 		if ( texture.isDataArrayTexture || texture.isCompressedArrayTexture ) textureType = _gl.TEXTURE_2D_ARRAY;
@@ -1134,6 +1178,7 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 		}
 
 		textureProperties.__version = texture.version;
+		return true;
 
 	}
 
@@ -1363,7 +1408,11 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 			const width = Math.max( 1, renderTarget.width >> level );
 			const height = Math.max( 1, renderTarget.height >> level );
 
-			if ( textureTarget === _gl.TEXTURE_3D || textureTarget === _gl.TEXTURE_2D_ARRAY ) {
+			if ( renderTarget.isWebGLMultiviewRenderTarget === true ) {
+
+				state.texStorage3D( _gl.TEXTURE_2D_ARRAY, 0, glInternalFormat, renderTarget.width, renderTarget.height, renderTarget.numViews );
+
+			} else if ( textureTarget === _gl.TEXTURE_3D || textureTarget === _gl.TEXTURE_2D_ARRAY ) {
 
 				state.texImage3D( textureTarget, level, glInternalFormat, width, height, renderTarget.depth, 0, glFormat, glType, null );
 
@@ -1377,13 +1426,31 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 		state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
 
-		if ( useMultisampledRTT( renderTarget ) ) {
+		const multisampled = useMultisampledRTT( renderTarget );
 
-			multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( texture ).__webglTexture, 0, getRenderTargetSamples( renderTarget ) );
+		if ( renderTarget.isWebGLMultiviewRenderTarget === true ) {
+
+			if ( multisampled ) {
+
+				multiviewExt.framebufferTextureMultisampleMultiviewOVR( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, properties.get( texture ).__webglTexture, 0, getRenderTargetSamples( renderTarget ), 0, renderTarget.numViews );
+
+			} else {
+
+				multiviewExt.framebufferTextureMultiviewOVR( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, properties.get( texture ).__webglTexture, 0, 0, renderTarget.numViews );
+
+			}
 
 		} else if ( textureTarget === _gl.TEXTURE_2D || ( textureTarget >= _gl.TEXTURE_CUBE_MAP_POSITIVE_X && textureTarget <= _gl.TEXTURE_CUBE_MAP_NEGATIVE_Z ) ) { // see #24753
 
-			_gl.framebufferTexture2D( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( texture ).__webglTexture, level );
+			if ( multisampled ) {
+
+				multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( texture ).__webglTexture, 0, getRenderTargetSamples( renderTarget ) );
+
+			} else {
+
+				_gl.framebufferTexture2D( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( texture ).__webglTexture, level );
+
+			}
 
 		}
 
@@ -1397,7 +1464,59 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 		_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer );
 
-		if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {
+		if ( renderTarget.isWebGLMultiviewRenderTarget === true ) {
+
+			const useMultisample = useMultisampledRTT( renderTarget );
+			const numViews = renderTarget.numViews;
+
+			const depthTexture = renderTarget.depthTexture;
+			let glInternalFormat = _gl.DEPTH_COMPONENT24;
+			let glDepthAttachment = _gl.DEPTH_ATTACHMENT;
+
+			if ( depthTexture && depthTexture.isDepthTexture ) {
+
+				if ( depthTexture.type === FloatType ) {
+
+					glInternalFormat = _gl.DEPTH_COMPONENT32F;
+
+				} else if ( depthTexture.type === UnsignedInt248Type ) {
+
+					glInternalFormat = _gl.DEPTH24_STENCIL8;
+					glDepthAttachment = _gl.DEPTH_STENCIL_ATTACHMENT;
+
+				}
+
+				// we're defaulting to _gl.DEPTH_COMPONENT24 so don't assign here
+				// or else DeepScan will complain
+
+				// else if ( depthTexture.type === UnsignedIntType ) {
+
+				// 	glInternalFormat = _gl.DEPTH_COMPONENT24;
+
+				// }
+
+			}
+
+			let depthStencilTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
+			if ( depthStencilTexture === undefined ) {
+
+				depthStencilTexture = _gl.createTexture();
+				_gl.bindTexture( _gl.TEXTURE_2D_ARRAY, depthStencilTexture );
+				_gl.texStorage3D( _gl.TEXTURE_2D_ARRAY, 1, glInternalFormat, renderTarget.width, renderTarget.height, numViews );
+
+			}
+
+			if ( useMultisample ) {
+
+				multiviewExt.framebufferTextureMultisampleMultiviewOVR( _gl.FRAMEBUFFER, glDepthAttachment, depthStencilTexture, 0, getRenderTargetSamples( renderTarget ), 0, numViews );
+
+			} else {
+
+				multiviewExt.framebufferTextureMultiviewOVR( _gl.FRAMEBUFFER, glDepthAttachment, depthStencilTexture, 0, 0, numViews );
+
+			}
+
+		} else if ( renderTarget.depthBuffer && ! renderTarget.stencilBuffer ) {
 
 			let glInternalFormat = ( isWebGL2 === true ) ? _gl.DEPTH_COMPONENT24 : _gl.DEPTH_COMPONENT16;
 
@@ -1521,37 +1640,85 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 		}
 
 		setTexture2D( renderTarget.depthTexture, 0 );
+		if ( renderTarget.depthTexture.image.depth != 1 ) {
+
+			setTexture2DArray( renderTarget.depthTexture, 0 );
+
+		} else {
+
+			setTexture2D( renderTarget.depthTexture, 0 );
+
+		}
 
 		const webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
 		const samples = getRenderTargetSamples( renderTarget );
 
-		if ( renderTarget.depthTexture.format === DepthFormat ) {
+		if ( renderTarget.isWebGLMultiviewRenderTarget === true ) {
 
-			if ( useMultisampledRTT( renderTarget ) ) {
+			const useMultisample = useMultisampledRTT( renderTarget );
+			const numViews = renderTarget.numViews;
 
-				multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples );
+			if ( renderTarget.depthTexture.format === DepthFormat ) {
 
-			} else {
+				if ( useMultisample ) {
 
-				_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
+					multiviewExt.framebufferTextureMultisampleMultiviewOVR( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, webglDepthTexture, 0, samples, 0, numViews );
 
-			}
+				} else {
 
-		} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {
+					multiviewExt.framebufferTextureMultiviewOVR( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, webglDepthTexture, 0, 0, numViews );
+
+				}
+
+			} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {
+
+				if ( useMultisample ) {
+
+					multiviewExt.framebufferTextureMultisampleMultiviewOVR( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, webglDepthTexture, 0, samples, 0, numViews );
+
+				} else {
 
-			if ( useMultisampledRTT( renderTarget ) ) {
+					multiviewExt.framebufferTextureMultiviewOVR( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, webglDepthTexture, 0, 0, numViews );
 
-				multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples );
+				}
 
 			} else {
 
-				_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
+				throw new Error( 'Unknown depthTexture format' );
 
 			}
 
 		} else {
 
-			throw new Error( 'Unknown depthTexture format' );
+			if ( renderTarget.depthTexture.format === DepthFormat ) {
+
+				if ( useMultisampledRTT( renderTarget ) ) {
+
+					multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples );
+
+				} else {
+
+					_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
+
+				}
+
+			} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {
+
+				if ( useMultisampledRTT( renderTarget ) ) {
+
+					multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples );
+
+				} else {
+
+					_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
+
+				}
+
+			} else {
+
+				throw new Error( 'Unknown depthTexture format' );
+
+			}
 
 		}
 
@@ -1830,6 +1997,12 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 			}
 
+			if ( renderTarget.isWebGLMultiviewRenderTarget === true ) {
+
+				glTextureType = _gl.TEXTURE_2D_ARRAY;
+
+			}
+
 			state.bindTexture( glTextureType, textureProperties.__webglTexture );
 			setTextureParameters( glTextureType, texture, supportsMips );
 
@@ -1859,9 +2032,9 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 
 		// Setup depth and stencil buffers
 
-		if ( renderTarget.depthBuffer ) {
+		if ( renderTarget.depthBuffer || renderTarget.isWebGLMultiviewRenderTarget === true ) {
 
-			setupDepthRenderbuffer( renderTarget );
+			this.setupDepthRenderbuffer( renderTarget );
 
 		}
 
@@ -2097,12 +2270,16 @@ function WebGLTextures( _gl, extensions, state, properties, capabilities, utils,
 	this.setTexture3D = setTexture3D;
 	this.setTextureCube = setTextureCube;
 	this.rebindTextures = rebindTextures;
+	this.uploadTexture = uploadTexture;
 	this.setupRenderTarget = setupRenderTarget;
 	this.updateRenderTargetMipmap = updateRenderTargetMipmap;
 	this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
+	this.setupDepthTexture = setupDepthTexture;
 	this.setupDepthRenderbuffer = setupDepthRenderbuffer;
 	this.setupFrameBufferTexture = setupFrameBufferTexture;
 	this.useMultisampledRTT = useMultisampledRTT;
+	this.runDeferredUploads = runDeferredUploads;
+	this.setDeferTextureUploads = setDeferTextureUploads;
 
 }
 
diff --git a/src/renderers/webxr/WebXRManager.js b/src/renderers/webxr/WebXRManager.js
index b44f241d03bec9..271de7feb2e730 100644
--- a/src/renderers/webxr/WebXRManager.js
+++ b/src/renderers/webxr/WebXRManager.js
@@ -6,6 +6,7 @@ import { Vector3 } from '../../math/Vector3.js';
 import { Vector4 } from '../../math/Vector4.js';
 import { RAD2DEG } from '../../math/MathUtils.js';
 import { WebGLAnimation } from '../webgl/WebGLAnimation.js';
+import { WebGLMultiviewRenderTarget } from '../WebGLMultiviewRenderTarget.js';
 import { WebGLRenderTarget } from '../WebGLRenderTarget.js';
 import { WebXRController } from './WebXRController.js';
 import { DepthTexture } from '../../textures/DepthTexture.js';
@@ -13,7 +14,7 @@ import { DepthFormat, DepthStencilFormat, RGBAFormat, UnsignedByteType, Unsigned
 
 class WebXRManager extends EventDispatcher {
 
-	constructor( renderer, gl ) {
+	constructor( renderer, gl, extensions, useMultiview ) {
 
 		super();
 
@@ -72,6 +73,7 @@ class WebXRManager extends EventDispatcher {
 		this.enabled = false;
 
 		this.isPresenting = false;
+		this.isMultiview = false;
 
 		this.getCameraPose = function ( ) {
 
@@ -324,12 +326,20 @@ class WebXRManager extends EventDispatcher {
 
 					}
 
+					scope.isMultiview = useMultiview && extensions.has( 'OCULUS_multiview' );
+
 					const projectionlayerInit = {
 						colorFormat: gl.RGBA8,
 						depthFormat: glDepthFormat,
 						scaleFactor: framebufferScaleFactor
 					};
 
+					if ( scope.isMultiview ) {
+
+						projectionlayerInit.textureType = 'texture-array';
+
+					}
+
 					glBinding = new XRWebGLBinding( session, gl );
 
 					glProjLayer = glBinding.createProjectionLayer( projectionlayerInit );
@@ -339,17 +349,31 @@ class WebXRManager extends EventDispatcher {
 					renderer.setPixelRatio( 1 );
 					renderer.setSize( glProjLayer.textureWidth, glProjLayer.textureHeight, false );
 
-					newRenderTarget = new WebGLRenderTarget(
-						glProjLayer.textureWidth,
-						glProjLayer.textureHeight,
-						{
-							format: RGBAFormat,
-							type: UnsignedByteType,
-							depthTexture: new DepthTexture( glProjLayer.textureWidth, glProjLayer.textureHeight, depthType, undefined, undefined, undefined, undefined, undefined, undefined, depthFormat ),
-							stencilBuffer: attributes.stencil,
-							colorSpace: renderer.outputColorSpace,
-							samples: attributes.antialias ? 4 : 0
-						} );
+					const renderTargetOptions = {
+						format: RGBAFormat,
+						type: UnsignedByteType,
+						depthTexture: new DepthTexture( glProjLayer.textureWidth, glProjLayer.textureHeight, depthType, undefined, undefined, undefined, undefined, undefined, undefined, depthFormat ),
+						stencilBuffer: attributes.stencil,
+						colorSpace: renderer.outputColorSpace,
+						samples: attributes.antialias ? 4 : 0
+					};
+
+					if ( scope.isMultiview ) {
+
+						const extension = extensions.get( 'OCULUS_multiview' );
+
+						this.maxNumViews = gl.getParameter( extension.MAX_VIEWS_OVR );
+
+						newRenderTarget = new WebGLMultiviewRenderTarget( glProjLayer.textureWidth, glProjLayer.textureHeight, 2, renderTargetOptions );
+
+					} else {
+
+						newRenderTarget = new WebGLRenderTarget(
+							glProjLayer.textureWidth,
+							glProjLayer.textureHeight,
+							renderTargetOptions );
+
+					}
 
 					const renderTargetProperties = renderer.properties.get( newRenderTarget );
 					renderTargetProperties.__ignoreDepthValues = glProjLayer.ignoreDepthValues;