cleanup (mrdoob#26791)

Author: ycw

src/materials/Material.js

@@ -320,10 +320,10 @@ class Material extends EventDispatcher {
 
 		if ( this.blending !== NormalBlending ) data.blending = this.blending;
 		if ( this.side !== FrontSide ) data.side = this.side;
-		if ( this.vertexColors ) data.vertexColors = true;
+		if ( this.vertexColors === true ) data.vertexColors = true;
 
 		if ( this.opacity < 1 ) data.opacity = this.opacity;
-		if ( this.transparent === true ) data.transparent = this.transparent;
+		if ( this.transparent === true ) data.transparent = true;
 
 		data.depthFunc = this.depthFunc;
 		data.depthTest = this.depthTest;
@@ -354,17 +354,17 @@ class Material extends EventDispatcher {
 		if ( this.dithering === true ) data.dithering = true;
 
 		if ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;
-		if ( this.alphaHash === true ) data.alphaHash = this.alphaHash;
-		if ( this.alphaToCoverage === true ) data.alphaToCoverage = this.alphaToCoverage;
-		if ( this.premultipliedAlpha === true ) data.premultipliedAlpha = this.premultipliedAlpha;
-		if ( this.forceSinglePass === true ) data.forceSinglePass = this.forceSinglePass;
+		if ( this.alphaHash === true ) data.alphaHash = true;
+		if ( this.alphaToCoverage === true ) data.alphaToCoverage = true;
+		if ( this.premultipliedAlpha === true ) data.premultipliedAlpha = true;
+		if ( this.forceSinglePass === true ) data.forceSinglePass = true;
 
-		if ( this.wireframe === true ) data.wireframe = this.wireframe;
+		if ( this.wireframe === true ) data.wireframe = true;
 		if ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;
 		if ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;
 		if ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;
 
-		if ( this.flatShading === true ) data.flatShading = this.flatShading;
+		if ( this.flatShading === true ) data.flatShading = true;
 
 		if ( this.visible === false ) data.visible = false;