21 lines
981 B
Plaintext
21 lines
981 B
Plaintext
#summary Mipmap Generation
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== References ==
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* Jon Blow articles in Game Developer Magazine:
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* [http://number-none.com/product/Mipmapping,%20Part%201/index.html Mipmapping, Part 1]
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* [http://number-none.com/product/Mipmapping,%20Part%202/index.html Mipmapping, Part 2]
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* [http://developer.nvidia.com/object/np2_mipmapping.html Non-Power-of-Two Mipmapping]
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== Conclusions ==
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Here are some of my findings:
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* Windowed sinc filters with radius greater than 3 produce too many ringing artifacts.
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* For good results with non power of two textures or arbitrary scales, you must use polyphase filters.
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* Sampling the polyphase filter with a box filter greatly improves the quality.
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* Using a triangle filter looks even better, but the difference is small.
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* For most cases box does a great job.
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* The Lanczos and Kaiser windows produce indistinguishable results.
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* Gamma correction produces more correct results, but sometimes enhances the ringing artifacts. |