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A comment on Sega Saturn Architecture – A practical analysis. Parent comment

Re:Sega Saturn Architecture – A practical analysis by cubefox on Wednesday March 27, 2024 @05:33AM (#39837040)
Of course, but that's not generally true. Why use two triangles for e.g. a rectangular floor? The walls and the ceiling are also rectangular after all. Probably mixing and matching different polygons isn't very efficient either.

About collision: I don't know how it is computed, but if it's by ray casting, that is now also used for lighting effects and sometimes reflections. Which would be another reason to stick to triangles.

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Re:Sega Saturn Architecture – A practical analysis by mmaniac on Wednesday March 27, 2024 @03:33PM (#39843562)
The Playstation, at least, supports quads as a draw primitive. It does decompose these quads to tris for rasterization[1].

The Nintendo DS actually supports both tris and quads as rasterization primitives, which has some interesting consequences for shading[2].

[1] https://psx-spx.consoledev.net/graphicsprocessingunitgpu/#gp...

[2] https://melonds.kuribo64.net/comments.php?id=13

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