From 49cf7a66f65c85cafb7690a344148e4adb6f062e Mon Sep 17 00:00:00 2001
From: "Mr.doob" <info@mrdoob.com>
Date: Thu, 24 May 2018 12:29:56 -0400
Subject: [PATCH] WebGLRenderer: Added setFramebuffer(). Fixes shadows in
 WebXR.

---
 src/renderers/WebGLRenderer.js      | 14 ++++++++++++--
 src/renderers/webvr/WebXRManager.js |  9 +++++----
 2 files changed, 17 insertions(+), 6 deletions(-)

diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index 2de215108d..891c8e43b5 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -123,6 +123,8 @@ function WebGLRenderer( parameters ) {
 
 		// internal state cache
 
+		_framebuffer = null,
+
 		_currentRenderTarget = null,
 		_currentFramebuffer = null,
 		_currentMaterialId = - 1,
@@ -290,7 +292,7 @@ function WebGLRenderer( parameters ) {
 
 	// vr
 
-	var vr = ( 'xr' in navigator ) ? new WebXRManager( _gl ) : new WebVRManager( _this );
+	var vr = ( 'xr' in navigator ) ? new WebXRManager( _this ) : new WebVRManager( _this );
 
 	this.vr = vr;
 
@@ -2396,6 +2398,14 @@ function WebGLRenderer( parameters ) {
 
 	}() );
 
+	//
+
+	this.setFramebuffer = function ( value ) {
+
+		_framebuffer = value;
+
+	};
+
 	this.getRenderTarget = function () {
 
 		return _currentRenderTarget;
@@ -2412,7 +2422,7 @@ function WebGLRenderer( parameters ) {
 
 		}
 
-		var framebuffer = null;
+		var framebuffer = _framebuffer;
 		var isCube = false;
 
 		if ( renderTarget ) {
diff --git a/src/renderers/webvr/WebXRManager.js b/src/renderers/webvr/WebXRManager.js
index 208fbe32f9..77ddc78a67 100644
--- a/src/renderers/webvr/WebXRManager.js
+++ b/src/renderers/webvr/WebXRManager.js
@@ -10,10 +10,11 @@ import { ArrayCamera } from '../../cameras/ArrayCamera.js';
 import { PerspectiveCamera } from '../../cameras/PerspectiveCamera.js';
 import { WebGLAnimation } from '../webgl/WebGLAnimation.js';
 
-function WebXRManager( gl ) {
+function WebXRManager( renderer ) {
 
 	var scope = this;
 
+	var gl = renderer.context;
 	var device = null;
 	var session = null;
 
@@ -70,7 +71,7 @@ function WebXRManager( gl ) {
 
 			session.addEventListener( 'end', function () {
 
-				gl.bindFramebuffer( gl.FRAMEBUFFER, null );
+				renderer.setFramebuffer( null );
 				animation.stop();
 
 			} );
@@ -81,6 +82,8 @@ function WebXRManager( gl ) {
 				frameOfRef = value;
 				isExclusive = session.exclusive;
 
+				renderer.setFramebuffer( session.baseLayer.framebuffer );
+
 				animation.setContext( session );
 				animation.start();
 
@@ -135,8 +138,6 @@ function WebXRManager( gl ) {
 
 		}
 
-		gl.bindFramebuffer( gl.FRAMEBUFFER, session.baseLayer.framebuffer );
-
 		if ( onAnimationFrameCallback ) onAnimationFrameCallback();
 
 	}
-- 
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