世界网格与追踪顶点 黄色方点标记当前顶点 Model(+0.70, +0.70, +0.70)输入顶点 World(+1.43, +0.50, +0.19)M · p View(+0.91, +0.12, −4.21)V · M · p NDC(+0.21, +0.05, +0.96)clip.xyz / clip.w