From 79c14c8fd0f01a123306fac15742871636305124 Mon Sep 17 00:00:00 2001
From: "Mr.doob" <info@mrdoob.com>
Date: Tue, 18 Jul 2017 16:10:04 -0700
Subject: [PATCH] WebGLShadowMap context lost support and clean up.

---
 src/renderers/WebGLRenderer.js        |  4 ++--
 src/renderers/webgl/WebGLShadowMap.js | 15 +++++----------
 2 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/src/renderers/WebGLRenderer.js b/src/renderers/WebGLRenderer.js
index d2b2f7d78b..4f48042100 100644
--- a/src/renderers/WebGLRenderer.js
+++ b/src/renderers/WebGLRenderer.js
@@ -309,7 +309,7 @@ function WebGLRenderer( parameters ) {
 
 	// shadow map
 
-	var shadowMap = new WebGLShadowMap( _this, shadowsArray, objects, capabilities.maxTextureSize );
+	var shadowMap = new WebGLShadowMap( _this, objects, capabilities.maxTextureSize );
 
 	this.shadowMap = shadowMap;
 
@@ -1131,7 +1131,7 @@ function WebGLRenderer( parameters ) {
 
 		if ( _clippingEnabled ) _clipping.beginShadows();
 
-		shadowMap.render( scene, camera );
+		shadowMap.render( shadowsArray, scene, camera );
 
 		lights.setup( lightsArray, shadowsArray, camera );
 
diff --git a/src/renderers/webgl/WebGLShadowMap.js b/src/renderers/webgl/WebGLShadowMap.js
index 93300ce870..d4f1ea95f8 100644
--- a/src/renderers/webgl/WebGLShadowMap.js
+++ b/src/renderers/webgl/WebGLShadowMap.js
@@ -16,7 +16,7 @@ import { Vector2 } from '../../math/Vector2';
 import { Matrix4 } from '../../math/Matrix4';
 import { Frustum } from '../../math/Frustum';
 
-function WebGLShadowMap( _renderer, _shadows, _objects, maxTextureSize ) {
+function WebGLShadowMap( _renderer, _objects, maxTextureSize ) {
 
 	var _gl = _renderer.context,
 		_state = _renderer.state,
@@ -99,12 +99,12 @@ function WebGLShadowMap( _renderer, _shadows, _objects, maxTextureSize ) {
 	this.renderReverseSided = true;
 	this.renderSingleSided = true;
 
-	this.render = function ( scene, camera ) {
+	this.render = function ( lights, scene, camera ) {
 
 		if ( scope.enabled === false ) return;
 		if ( scope.autoUpdate === false && scope.needsUpdate === false ) return;
 
-		if ( _shadows.length === 0 ) return;
+		if ( lights.length === 0 ) return;
 
 		// Set GL state for depth map.
 		_state.disable( _gl.BLEND );
@@ -116,9 +116,9 @@ function WebGLShadowMap( _renderer, _shadows, _objects, maxTextureSize ) {
 
 		var faceCount;
 
-		for ( var i = 0, il = _shadows.length; i < il; i ++ ) {
+		for ( var i = 0, il = lights.length; i < il; i ++ ) {
 
-			var light = _shadows[ i ];
+			var light = lights[ i ];
 			var shadow = light.shadow;
 			var isPointLight = light && light.isPointLight;
 
@@ -258,11 +258,6 @@ function WebGLShadowMap( _renderer, _shadows, _objects, maxTextureSize ) {
 
 		}
 
-		// Restore GL state.
-		var clearColor = _renderer.getClearColor();
-		var clearAlpha = _renderer.getClearAlpha();
-		_renderer.setClearColor( clearColor, clearAlpha );
-
 		scope.needsUpdate = false;
 
 	};
-- 
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