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Author Topic: What is the different between 'zfill' and 'zuse'?  (Read 1718 times)
Jr. Member
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« on: November 26, 2007, 08:50:17 am »

  Hi, I am new in CS.
  In the user manual, there are a few explanation of 'zfill' and 'zuse'. I still don't understand much about what is the different between 'zfill' and 'zuse'! Can you give me some information about them?
  Thank you very much!
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« Reply #1 on: November 26, 2007, 08:53:33 am »

zuse is what is considered normal. It means that when a triangle is rendered on screen the z-buffer will be checked (to avoid pixels of the triangle that are behind other triangles to be rendered) and also when the triangle pixel is rendered the z-buffer will be updated so that future triangles will not render unless they are in front of this one.

With zfill the z-buffer is only filled and not read. That means that a triangle that uses zfill will always overwrite all other triangles that are already at that spot.

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