Fix padTo4Bytes issue by using our own function

Do not use the (non-existant) loaders.gl function padTo4Bytes
as there is a padTo4Bytes defined locally.

Also fix the GLTFParser.getApplicationData() to delegate to
the glbParser if the local json dictionary is not defined.

modules/io/src/gltf/glb-builder.js

@@ -12,9 +12,10 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 /* eslint-disable camelcase, max-statements */
-import {padTo4Bytes, copyToArray} from '@loaders.gl/loader-utils';
+import {copyToArray} from '@loaders.gl/loader-utils';
 import {isImage} from '@loaders.gl/images';
 import {getAccessorTypeFromSize, getComponentTypeFromArray} from './gltf-utils/gltf-utils';
+import {padTo4Bytes} from './memory-copy-utils';
 import encodeGLBSync from './encode-glb';
 import {packBinaryJson} from '../writers/xviz-pack-binary';
 

modules/io/src/gltf/gltf-parser.js

@@ -105,6 +105,8 @@ export class GLTFParser {
   getApplicationData(key) {
     if (this.json) {
       return this.json[key];
+    } else if (this.glbParser) {
+      return this.glbParser.getApplicationData(key);
     }
 
     return null;

modules/io/src/gltf/parse-glb.js

@@ -14,7 +14,8 @@
 /* global TextDecoder */
 /* eslint-disable camelcase, max-statements */
 import '../common/text-encoding';
-import {padTo4Bytes, assert} from '@loaders.gl/loader-utils';
+import {assert} from '@loaders.gl/loader-utils';
+import {padTo4Bytes} from './memory-copy-utils';
 
 const MAGIC_glTF = 0x676c5446; // glTF in Big-Endian ASCII