ynchronously copy-initializes a region of the specified buffer from the given buffer data.</div>
<dl>
<dt><span class="paramLabel">参数:</span></dt>
<dd><code>engine</code> - reference to the <a href="../../../../com/google/android/filament/Engine.html" title="com.google.android.filament中的类"><code>Engine</code></a> to associate this
                          <code>VertexBuffer</code> with</dd>
<dd><code>bufferIndex</code> - index of the buffer to initialize. Must be between 0 and
                   