static void android_view_GLES20Canvas_drawOval(JNIEnv* env, jobject clazz,
        jlong rendererPtr, jfloat left, jfloat top, jfloat right, jfloat bottom,
        jlong paintPtr) {
    DisplayListRenderer* renderer = reinterpret_cast<DisplayListRenderer*>(rendererPtr);
    Paint* paint = reinterpret_cast<Paint*>(paintPtr);
    renderer->drawOval(left, top, right, bottom, paint);
}