Update viewer.js

viewer.js

@@ -276,8 +276,9 @@ export async function initializeViewer(config, instanceId) {
               mat.useMetalness = true;
               mat.useDynamicRefraction = true;
               mat.thickness = 1;
-              mat.specular = new pc.Color(0.01, 0.01, 0.01);
-              mat.gloss = 0;
+              //mat.specular = new pc.Color(0.01, 0.01, 0.01);
+              mat.gloss = 1;
+              mat.glossInvert = true;
               mat.metalness = 0;
               mat.update();
             }