diff --git a/packages/core/src/batch/AbstractBatchRenderer.js b/packages/core/src/batch/AbstractBatchRenderer.js
index 935b5b7..d37b277 100644
--- a/packages/core/src/batch/AbstractBatchRenderer.js
+++ b/packages/core/src/batch/AbstractBatchRenderer.js
@@ -730,8 +730,10 @@
                 }
 
                 let offset = sourceOffsets[s];
+                const size = (typeof attribute !== 'string')
+                    ? attribute.size : builtinAttributeSizes[attribute];
 
-                for (let float = 0; float < attribute.size; float++)
+                for (let float = 0; float < size; float++)
                 {
                     float32View[aIndex++] = source[offset++ % source.length];
                 }

diff --git a/packages/core/src/batch/AbstractBatchRenderer.js b/packages/core/src/batch/AbstractBatchRenderer.js
index 935b5b7..d37b277 100644
--- a/packages/core/src/batch/AbstractBatchRenderer.js
+++ b/packages/core/src/batch/AbstractBatchRenderer.js
@@ -730,8 +730,10 @@
                 }
 
                 let offset = sourceOffsets[s];
+                const size = (typeof attribute !== 'string')
+                    ? attribute.size : builtinAttributeSizes[attribute];
 
-                for (let float = 0; float < attribute.size; float++)
+                for (let float = 0; float < size; float++)
                 {
                     float32View[aIndex++] = source[offset++ % source.length];
                 }
diff --git a/packages/core/src/batch/BatchBuffer.js b/packages/core/src/batch/BatchBuffer.js
index 128ef7e..5ee8a5f 100644
--- a/packages/core/src/batch/BatchBuffer.js
+++ b/packages/core/src/batch/BatchBuffer.js
@@ -26,14 +26,14 @@
          *
          * @member {Float32Array}
          */
-        this.float32View = new Float32Array(this.vertices);
+        this.float32View = new Float32Array(this.rawBinaryData);
 
         /**
          * View on the raw binary data as a `Uint32Array`.
          *
          * @member {Uint32Array}
          */
-        this.uint32View = new Uint32Array(this.vertices);
+        this.uint32View = new Uint32Array(this.rawBinaryData);
     }
 
     /**