sg.ShadowQuality 0-3
r.Shadow.CSM.MaxCascades 0-4
r.VisualizeOccludedPrimitives 1 显示遮挡
r.setnearclipplane X 近距离剔除
Cull Distance Volume 远距离剔除
showflag.bounds 1 看模型的bound范围
freezingrendering 冻结渲染
