void SceneView::drawHardwareBuffer (HWBuffer *buffer) {

    Q_ASSERT (buffer != nullptr);

    //TODO: update hardware buffer
    // NupdateHardwareBuffer (buffer);

    const MeshBuffer *meshBuffer = buffer->mMeshBuffer;

    bool v, i;
    if (v = buffer->mVertexBuffer->bufferId() != 0) {

       bool e = buffer->mVertexBuffer->bind ();
       Q_ASSERT (e != false);
    }

    if (i = buffer->mIndexBuffer->bufferId ()) {

        bool e = buffer->mIndexBuffer->bind ();
        Q_ASSERT (e != false);
    }

    drawVertexPrimitiveList (meshBuffer->vertices(), meshBuffer->vertexCount(), meshBuffer->indices(), meshBuffer->indexCount() / 3, meshBuffer->vertexType (), EPT_TRIANGLES);

    if (v) buffer->mVertexBuffer->release();
    if (i) buffer->mIndexBuffer->release ();
}