static jlong create(JNIEnv* env, jclass clazz, jlong rootNodePtr, jlong surfacePtr) {
    RenderNode* rootNode = reinterpret_cast<RenderNode*>(rootNodePtr);
    sp<Surface> surface(reinterpret_cast<Surface*>(surfacePtr));
    ContextFactory factory;
    RenderProxy* proxy = new RenderProxy(false, rootNode, &factory);
    proxy->loadSystemProperties();
    proxy->setSwapBehavior(kSwap_discardBuffer);
    proxy->initialize(surface);
    // Shadows can't be used via this interface, so just set the light source
    // to all 0s. (and width & height are unused, TODO remove them)
    proxy->setup(0, 0, 0, 0, 0);
    proxy->setLightCenter((Vector3){0, 0, 0});
    return (jlong) proxy;
}
static void android_view_ThreadedRenderer_setLightCenter(JNIEnv* env, jobject clazz,
        jlong proxyPtr, jfloat lightX, jfloat lightY, jfloat lightZ) {
    RenderProxy* proxy = reinterpret_cast<RenderProxy*>(proxyPtr);
    proxy->setLightCenter((Vector3){lightX, lightY, lightZ});
}