WebGLState: Cache isWebGL2.

src/renderers/webgl/WebGLState.js

@@ -7,6 +7,8 @@ import { Vector4 } from '../../math/Vector4.js';
 
 function WebGLState( gl, extensions, utils, capabilities ) {
 
+	var isWebGL2 = capabilities.isWebGL2;
+
 	function ColorBuffer() {
 
 		var locked = false;
@@ -438,9 +440,9 @@ function WebGLState( gl, extensions, utils, capabilities ) {
 
 		if ( attributeDivisors[ attribute ] !== meshPerAttribute ) {
 
-			var extension = capabilities.isWebGL2 ? gl : extensions.get( 'ANGLE_instanced_arrays' );
+			var extension = isWebGL2 ? gl : extensions.get( 'ANGLE_instanced_arrays' );
 
-			extension[ capabilities.isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE' ]( attribute, meshPerAttribute );
+			extension[ isWebGL2 ? 'vertexAttribDivisor' : 'vertexAttribDivisorANGLE' ]( attribute, meshPerAttribute );
 			attributeDivisors[ attribute ] = meshPerAttribute;
 
 		}