updated examples (google#3578)

packages/modelviewer.dev/examples/augmentedreality/index.html

@@ -291,6 +291,13 @@ <h4>This demonstrates several augmented reality modes, including
               does not support animations yet). Also, this source can be either
               a .usdz or a .reality file.
             </p>
+            <p>
+              Additionally, <code>ar-scale="fixed"</code> is used to prevent the
+              user from scaling the object in AR, applying to all three AR
+              modes. The <code>xr-environment</code> attribute causes estimated
+              lighting to be used in the WebXR AR mode, rather than the lighting
+              from the 3D mode, but does not affect Quick Look or Scene Viewer.
+            </p>
           </div>
           <example-snippet stamp-to="ar" highlight-as="html">
             <template>

packages/modelviewer.dev/examples/scenegraph/index.html

@@ -336,6 +336,8 @@ <h2 class="demo-title">Create textures</h2>
 </model-viewer>
 <script type="module">
 const modelViewerTexture = document.querySelector("model-viewer#duck");
+const textureName = document.querySelector('#texture-name');
+const imageName = document.querySelector('#image-name');
 
 modelViewerTexture.addEventListener("load", () => {
 
@@ -345,6 +347,9 @@ <h2 class="demo-title">Create textures</h2>
     if (event.target.value == "None") {
       // Clears the texture.
       material[channel].setTexture(null);
+      // Display the names values
+      textureName.innerText = "None";
+      imageName.innerText = "None";
     } else if (event.target.value) {
       // Creates a new texture.
       const texture = await modelViewerTexture.createTexture(event.target.value);
@@ -353,8 +358,8 @@ <h2 class="demo-title">Create textures</h2>
       // Applies the new texture to the specified channel.
       material[channel].setTexture(texture);
       // Display the names values
-      document.querySelector('#texture-name').innerText = texture.name;
-      document.querySelector('#image-name').innerText = texture.source.name;
+      textureName.innerText = texture.name;
+      imageName.innerText = texture.source.name;
     }
   }