ImageUtils.getDataURL: Added warning when saving image as jpg. (#21386)

* ImageUtils: Added warning when saving image as jpg.

* Fixed trailing spaces

src/extras/ImageUtils.js

@@ -47,6 +47,8 @@ const ImageUtils = {
 
 		if ( canvas.width > 2048 || canvas.height > 2048 ) {
 
+			console.warn( 'THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons', image );
+
 			return canvas.toDataURL( 'image/jpeg', 0.6 );
 
 		} else {