Question: Hidden Surface Removal: Painter, Z-Buffer, Scanline Z-Buffer a. How can you do back-face culling in WS, ES and PS (after pers division)? For ray-tracing purposes,

Hidden Surface Removal: Painter, Z-Buffer, Scanline Z-Buffer a. How can you do back-face culling in WS, ES and PS (after pers division)? For ray-tracing purposes, BF rejection does not make sense; explain why b. What is the "memory" issue with z-buffer and how does scanline z-buffer resolve it? c. (5 points) For a polygon's plane equation given by -x-y 3z-4=0 (in screen space), find the depth of the plane at pixel (4,4) d. (5 points) Using incremental calculations, find the depth at pixel (3,4)

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