Updated to handle uv index greater than 1

examples/jsm/nodes/core/NodeBuilder.js

@@ -164,20 +164,23 @@ NodeBuilder.prototype = {
 		this.buildShader( 'vertex', vertex );
 		this.buildShader( 'fragment', fragment );
 
-		if ( this.requires.uv[ 0 ] ) {
+		for ( var i = 0; i < this.requires.uv.length; i++ ) {
 
-			this.addVaryCode( 'varying vec2 vUv;' );
+			if ( this.requires.uv[ i ] ) {
 
-			this.addVertexFinalCode( 'vUv = uv;' );
+				var uvIndex = i > 0 ? i + 1 : '';
 
-		}
+				this.addVaryCode( 'varying vec2 vUv' + uvIndex + ';' );
+
+				if ( i > 0 ) {
 
-		if ( this.requires.uv[ 1 ] ) {
+					this.addVertexParsCode( 'attribute vec2 uv' + uvIndex + ';' );
 
-			this.addVaryCode( 'varying vec2 vUv2;' );
-			this.addVertexParsCode( 'attribute vec2 uv2;' );
+				}
 
-			this.addVertexFinalCode( 'vUv2 = uv2;' );
+				this.addVertexFinalCode( 'vUv' + uvIndex + ' = uv' + uvIndex +';' );
+
+			}
 
 		}