Merge pull request #7638 from apopiak/call_prepareVertexAttribute_with_name

fix: call prepareVertexAttribute with a name so the error message is informative

Author: lilleyse

CONTRIBUTORS.md

@@ -204,3 +204,4 @@ See [CONTRIBUTING.md](CONTRIBUTING.md) for details on how to contribute to Cesiu
 * [Mirco Kroon](https://github.com/mircokroon)
 * [Rikku-x](https://github.com/Rikku-x)
 * [Adrien David](https://github.com/adridavid)
+* [Alexander Popiak](https://github.com/apopiak)

Source/Scene/PointCloud.js

@@ -516,7 +516,7 @@ define([
         return boundingSphere;
     }
 
-    function prepareVertexAttribute(typedArray) {
+    function prepareVertexAttribute(typedArray, name) {
         // WebGL does not support UNSIGNED_INT, INT, or DOUBLE vertex attributes. Convert these to FLOAT.
         var componentDatatype = ComponentDatatype.fromTypedArray(typedArray);
         if (componentDatatype === ComponentDatatype.INT || componentDatatype === ComponentDatatype.UNSIGNED_INT || componentDatatype === ComponentDatatype.DOUBLE) {
@@ -573,7 +573,7 @@ define([
             for (var name in styleableProperties) {
                 if (styleableProperties.hasOwnProperty(name)) {
                     var property = styleableProperties[name];
-                    var typedArray = prepareVertexAttribute(property.typedArray);
+                    var typedArray = prepareVertexAttribute(property.typedArray, name);
                     componentsPerAttribute = property.componentCount;
                     componentDatatype = ComponentDatatype.fromTypedArray(typedArray);
 
@@ -634,7 +634,7 @@ define([
 
         var batchIdsVertexBuffer;
         if (hasBatchIds) {
-            batchIds = prepareVertexAttribute(batchIds);
+            batchIds = prepareVertexAttribute(batchIds, 'batchIds');
             batchIdsVertexBuffer = Buffer.createVertexBuffer({
                 context : context,
                 typedArray : batchIds,