TSL: Fix setName() for attributes (#33432)

Author: sunag

src/nodes/accessors/BufferAttributeNode.js

@@ -265,8 +265,11 @@ class BufferAttributeNode extends InputNode {
 	generate( builder ) {
 
 		const nodeType = this.getNodeType( builder );
+		const nodeName = builder.context.nodeName;
 
-		const nodeAttribute = builder.getBufferAttributeFromNode( this, nodeType );
+		if ( nodeName !== undefined ) delete builder.context.nodeName; // deleting when consumed
+
+		const nodeAttribute = builder.getBufferAttributeFromNode( this, nodeType, nodeName );
 		const propertyName = builder.getPropertyName( nodeAttribute );
 
 		let output = null;
@@ -279,7 +282,15 @@ class BufferAttributeNode extends InputNode {
 
 		} else {
 
-			const nodeVarying = varying( this );
+			let varyingName;
+
+			if ( nodeName ) {
+
+				varyingName = nodeName + 'Varying';
+
+			}
+
+			const nodeVarying = varying( this, varyingName );
 
 			output = nodeVarying.build( builder, nodeType );
 

src/nodes/core/NodeBuilder.js

@@ -1839,9 +1839,10 @@ class NodeBuilder {
 	 *
 	 * @param {BufferAttributeNode} node - The buffer attribute node.
 	 * @param {string} type - The node type.
+	 * @param {?string} [name=null] - The name of the buffer attribute.
 	 * @return {NodeAttribute} The node attribute.
 	 */
-	getBufferAttributeFromNode( node, type ) {
+	getBufferAttributeFromNode( node, type, name = null ) {
 
 		const nodeData = this.getDataFromNode( node, 'vertex' );
 
@@ -1851,7 +1852,13 @@ class NodeBuilder {
 
 			const index = this.uniforms.index ++;
 
-			bufferAttribute = new NodeAttribute( 'nodeAttribute' + index, type, node );
+			if ( name === null ) {
+
+				name = 'nodeAttribute' + index;
+
+			}
+
+			bufferAttribute = new NodeAttribute( name, type, node );
 
 			this.bufferAttributes.push( bufferAttribute );