int CrFbDisplayWindowRootVr::compositorMarkUpdated()
{
    CrVrScrCompositorClear(&mCompositor);

    int rc = CrVrScrCompositorRectSet(&mCompositor, CrVrScrCompositorRectGet(CrFbGetCompositor(getFramebuffer())), NULL);
    if (!RT_SUCCESS(rc))
    {
        WARN(("err"));
        return rc;
    }

    rc = setRegionsChanged();
    if (!RT_SUCCESS(rc))
    {
        WARN(("screenChanged failed %d", rc));
        return rc;
    }

    return VINF_SUCCESS;
}
const struct RTRECT* CrFbDisplayWindowRootVr::getRect()
{
    return CrVrScrCompositorRectGet(&mCompositor);
}
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const struct RTRECT* CrFbDisplayWindow::getRect()
{
    const struct VBOXVR_SCR_COMPOSITOR* pCompositor = CrFbGetCompositor(getFramebuffer());
    return CrVrScrCompositorRectGet(pCompositor);
}