WebGLRenderer's alpha is true by default again.

build/Three.js

@@ -259,7 +259,7 @@ j.texParameteri(a,j.TEXTURE_MIN_FILTER,B(b.minFilter))):(j.texParameteri(a,j.TEX
 a)):b.depthBuffer&&b.stencilBuffer?(j.renderbufferStorage(j.RENDERBUFFER,j.DEPTH_STENCIL,b.width,b.height),j.framebufferRenderbuffer(j.FRAMEBUFFER,j.DEPTH_STENCIL_ATTACHMENT,j.RENDERBUFFER,a)):j.renderbufferStorage(j.RENDERBUFFER,j.RGBA4,b.width,b.height)}function v(a){switch(a){case THREE.NearestFilter:case THREE.NearestMipMapNearestFilter:case THREE.NearestMipMapLinearFilter:return j.NEAREST;default:return j.LINEAR}}function B(a){switch(a){case THREE.RepeatWrapping:return j.REPEAT;case THREE.ClampToEdgeWrapping:return j.CLAMP_TO_EDGE;
 case THREE.MirroredRepeatWrapping:return j.MIRRORED_REPEAT;case THREE.NearestFilter:return j.NEAREST;case THREE.NearestMipMapNearestFilter:return j.NEAREST_MIPMAP_NEAREST;case THREE.NearestMipMapLinearFilter:return j.NEAREST_MIPMAP_LINEAR;case THREE.LinearFilter:return j.LINEAR;case THREE.LinearMipMapNearestFilter:return j.LINEAR_MIPMAP_NEAREST;case THREE.LinearMipMapLinearFilter:return j.LINEAR_MIPMAP_LINEAR;case THREE.ByteType:return j.BYTE;case THREE.UnsignedByteType:return j.UNSIGNED_BYTE;case THREE.ShortType:return j.SHORT;
 case THREE.UnsignedShortType:return j.UNSIGNED_SHORT;case THREE.IntType:return j.INT;case THREE.UnsignedShortType:return j.UNSIGNED_INT;case THREE.FloatType:return j.FLOAT;case THREE.AlphaFormat:return j.ALPHA;case THREE.RGBFormat:return j.RGB;case THREE.RGBAFormat:return j.RGBA;case THREE.LuminanceFormat:return j.LUMINANCE;case THREE.LuminanceAlphaFormat:return j.LUMINANCE_ALPHA}return 0}var a=a||{},D=void 0!==a.canvas?a.canvas:document.createElement("canvas"),C=void 0!==a.precision?a.precision:
-"mediump",A=void 0!==a.alpha?a.alpha:!1,E=void 0!==a.premultipliedAlpha?a.premultipliedAlpha:!0,J=void 0!==a.antialias?a.antialias:!1,N=void 0!==a.stencil?a.stencil:!0,Y=void 0!==a.preserveDrawingBuffer?a.preserveDrawingBuffer:!1,K=void 0!==a.clearColor?new THREE.Color(a.clearColor):new THREE.Color(0),O=void 0!==a.clearAlpha?a.clearAlpha:0,M=void 0!==a.maxLights?a.maxLights:4;this.domElement=D;this.context=null;this.autoUpdateScene=this.autoUpdateObjects=this.sortObjects=this.autoClearStencil=this.autoClearDepth=
+"mediump",A=void 0!==a.alpha?a.alpha:!0,E=void 0!==a.premultipliedAlpha?a.premultipliedAlpha:!0,J=void 0!==a.antialias?a.antialias:!1,N=void 0!==a.stencil?a.stencil:!0,Y=void 0!==a.preserveDrawingBuffer?a.preserveDrawingBuffer:!1,K=void 0!==a.clearColor?new THREE.Color(a.clearColor):new THREE.Color(0),O=void 0!==a.clearAlpha?a.clearAlpha:0,M=void 0!==a.maxLights?a.maxLights:4;this.domElement=D;this.context=null;this.autoUpdateScene=this.autoUpdateObjects=this.sortObjects=this.autoClearStencil=this.autoClearDepth=
 this.autoClearColor=this.autoClear=!0;this.shadowMapEnabled=this.physicallyBasedShading=this.gammaOutput=this.gammaInput=!1;this.shadowMapCullFrontFaces=this.shadowMapSoft=this.shadowMapAutoUpdate=!0;this.maxMorphTargets=8;this.autoScaleCubemaps=!0;this.renderPluginsPre=[];this.renderPluginsPost=[];this.info={memory:{programs:0,geometries:0,textures:0},render:{calls:0,vertices:0,faces:0,points:0}};var H=this,j,X=[],y=null,F=null,P=-1,Q=null,ca=null,ga=0,ba=null,T=null,aa=null,S=null,$=null,fa=null,
 Ra=null,na=null,Ja=null,Ea=0,Aa=0,ja=0,ab=0,kb=0,db=0,Xa=new THREE.Frustum,Ya=new THREE.Matrix4,Qa=new THREE.Vector4,Fa=new THREE.Vector3,xa={ambient:[0,0,0],directional:{length:0,colors:[],positions:[]},point:{length:0,colors:[],positions:[],distances:[]}};j=function(){var a;try{if(!(a=D.getContext("experimental-webgl",{alpha:A,premultipliedAlpha:E,antialias:J,stencil:N,preserveDrawingBuffer:Y})))throw"Error creating WebGL context.";console.log(navigator.userAgent+" | "+a.getParameter(a.VERSION)+
 " | "+a.getParameter(a.VENDOR)+" | "+a.getParameter(a.RENDERER)+" | "+a.getParameter(a.SHADING_LANGUAGE_VERSION))}catch(b){console.error(b)}return a}();j.clearColor(0,0,0,1);j.clearDepth(1);j.clearStencil(0);j.enable(j.DEPTH_TEST);j.depthFunc(j.LEQUAL);j.frontFace(j.CCW);j.cullFace(j.BACK);j.enable(j.CULL_FACE);j.enable(j.BLEND);j.blendEquation(j.FUNC_ADD);j.blendFunc(j.SRC_ALPHA,j.ONE_MINUS_SRC_ALPHA);j.clearColor(K.r,K.g,K.b,O);this.context=j;var ya=j.getParameter(j.MAX_VERTEX_TEXTURE_IMAGE_UNITS);

build/custom/ThreeWebGL.js

@@ -213,7 +213,7 @@ g.texParameteri(a,g.TEXTURE_MIN_FILTER,B(b.minFilter))):(g.texParameteri(a,g.TEX
 a)):b.depthBuffer&&b.stencilBuffer?(g.renderbufferStorage(g.RENDERBUFFER,g.DEPTH_STENCIL,b.width,b.height),g.framebufferRenderbuffer(g.FRAMEBUFFER,g.DEPTH_STENCIL_ATTACHMENT,g.RENDERBUFFER,a)):g.renderbufferStorage(g.RENDERBUFFER,g.RGBA4,b.width,b.height)}function u(a){switch(a){case THREE.NearestFilter:case THREE.NearestMipMapNearestFilter:case THREE.NearestMipMapLinearFilter:return g.NEAREST;default:return g.LINEAR}}function B(a){switch(a){case THREE.RepeatWrapping:return g.REPEAT;case THREE.ClampToEdgeWrapping:return g.CLAMP_TO_EDGE;
 case THREE.MirroredRepeatWrapping:return g.MIRRORED_REPEAT;case THREE.NearestFilter:return g.NEAREST;case THREE.NearestMipMapNearestFilter:return g.NEAREST_MIPMAP_NEAREST;case THREE.NearestMipMapLinearFilter:return g.NEAREST_MIPMAP_LINEAR;case THREE.LinearFilter:return g.LINEAR;case THREE.LinearMipMapNearestFilter:return g.LINEAR_MIPMAP_NEAREST;case THREE.LinearMipMapLinearFilter:return g.LINEAR_MIPMAP_LINEAR;case THREE.ByteType:return g.BYTE;case THREE.UnsignedByteType:return g.UNSIGNED_BYTE;case THREE.ShortType:return g.SHORT;
 case THREE.UnsignedShortType:return g.UNSIGNED_SHORT;case THREE.IntType:return g.INT;case THREE.UnsignedShortType:return g.UNSIGNED_INT;case THREE.FloatType:return g.FLOAT;case THREE.AlphaFormat:return g.ALPHA;case THREE.RGBFormat:return g.RGB;case THREE.RGBAFormat:return g.RGBA;case THREE.LuminanceFormat:return g.LUMINANCE;case THREE.LuminanceAlphaFormat:return g.LUMINANCE_ALPHA}return 0}var a=a||{},H=void 0!==a.canvas?a.canvas:document.createElement("canvas"),A=void 0!==a.precision?a.precision:
-"mediump",M=void 0!==a.alpha?a.alpha:!1,N=void 0!==a.premultipliedAlpha?a.premultipliedAlpha:!0,I=void 0!==a.antialias?a.antialias:!1,S=void 0!==a.stencil?a.stencil:!0,ua=void 0!==a.preserveDrawingBuffer?a.preserveDrawingBuffer:!1,ka=void 0!==a.clearColor?new THREE.Color(a.clearColor):new THREE.Color(0),$=void 0!==a.clearAlpha?a.clearAlpha:0,Z=void 0!==a.maxLights?a.maxLights:4;this.domElement=H;this.context=null;this.autoUpdateScene=this.autoUpdateObjects=this.sortObjects=this.autoClearStencil=this.autoClearDepth=
+"mediump",M=void 0!==a.alpha?a.alpha:!0,N=void 0!==a.premultipliedAlpha?a.premultipliedAlpha:!0,I=void 0!==a.antialias?a.antialias:!1,S=void 0!==a.stencil?a.stencil:!0,ua=void 0!==a.preserveDrawingBuffer?a.preserveDrawingBuffer:!1,ka=void 0!==a.clearColor?new THREE.Color(a.clearColor):new THREE.Color(0),$=void 0!==a.clearAlpha?a.clearAlpha:0,Z=void 0!==a.maxLights?a.maxLights:4;this.domElement=H;this.context=null;this.autoUpdateScene=this.autoUpdateObjects=this.sortObjects=this.autoClearStencil=this.autoClearDepth=
 this.autoClearColor=this.autoClear=!0;this.shadowMapEnabled=this.physicallyBasedShading=this.gammaOutput=this.gammaInput=!1;this.shadowMapCullFrontFaces=this.shadowMapSoft=this.shadowMapAutoUpdate=!0;this.maxMorphTargets=8;this.autoScaleCubemaps=!0;this.renderPluginsPre=[];this.renderPluginsPost=[];this.info={memory:{programs:0,geometries:0,textures:0},render:{calls:0,vertices:0,faces:0,points:0}};var D=this,g,Sa=[],ba=null,pa=null,Q=-1,L=null,W=null,ya=0,ca=null,Ea=null,Ba=null,Na=null,Oa=null,Pa=
 null,Ta=null,Ua=null,nb=null,Fb=0,Pb=0,Ab=0,Gb=0,cc=0,dc=0,Qb=new THREE.Frustum,Va=new THREE.Matrix4,Ia=new THREE.Vector4,ib=new THREE.Vector3,ec={ambient:[0,0,0],directional:{length:0,colors:[],positions:[]},point:{length:0,colors:[],positions:[],distances:[]}};g=function(){var a;try{if(!(a=H.getContext("experimental-webgl",{alpha:M,premultipliedAlpha:N,antialias:I,stencil:S,preserveDrawingBuffer:ua})))throw"Error creating WebGL context.";console.log(navigator.userAgent+" | "+a.getParameter(a.VERSION)+
 " | "+a.getParameter(a.VENDOR)+" | "+a.getParameter(a.RENDERER)+" | "+a.getParameter(a.SHADING_LANGUAGE_VERSION))}catch(b){console.error(b)}return a}();g.clearColor(0,0,0,1);g.clearDepth(1);g.clearStencil(0);g.enable(g.DEPTH_TEST);g.depthFunc(g.LEQUAL);g.frontFace(g.CCW);g.cullFace(g.BACK);g.enable(g.CULL_FACE);g.enable(g.BLEND);g.blendEquation(g.FUNC_ADD);g.blendFunc(g.SRC_ALPHA,g.ONE_MINUS_SRC_ALPHA);g.clearColor(ka.r,ka.g,ka.b,$);this.context=g;var fc=g.getParameter(g.MAX_VERTEX_TEXTURE_IMAGE_UNITS);

src/renderers/WebGLRenderer.js

@@ -15,7 +15,7 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 	_precision = parameters.precision !== undefined ? parameters.precision : 'mediump',
 
-	_alpha = parameters.alpha !== undefined ? parameters.alpha : false,
+	_alpha = parameters.alpha !== undefined ? parameters.alpha : true,
 	_premultipliedAlpha = parameters.premultipliedAlpha !== undefined ? parameters.premultipliedAlpha : true,
 	_antialias = parameters.antialias !== undefined ? parameters.antialias : false,
 	_stencil = parameters.stencil !== undefined ? parameters.stencil : true,