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openglfilteringtexturesopengl-3multisampling
atoMerz
atoMerz

Reputation: 7672

Anisoptropic filtering and multisampling

I'm reading OpenGL Superbible 5th ed. I've come across several terms which although explained in the book are not so clear to me yet.

First is multisampling. I understand that it is used to smooth out polygons and help rendering a better image. What I don't understand is how it differs from anti aliasing.

Second is anisotropic filtering. I know the effect of this type of texture filtering, but I want to know how and when exactly it is used. Possibly a general explanation of the algorithm? I googled it and wikipedia doesn't explain much.

Upvotes: 2

Views: 899

Answers (2)

Julien Lebot
Julien Lebot

Reputation: 3092

Multisampling does not differ from anti-aliasing; it is a type of anti-aliasing. It is well explained by Shawn Hargreaves here

As for anisotropic filtering I could not explain it better than this article. If you can, read it all since it covers Anti-aliasing too !

Upvotes: 1

Nicol Bolas
Nicol Bolas

Reputation: 474086

Multisampling doesn't differ from anti-aliasing. Anti-aliasing is a general term for any technique which reduces aliasing in analog-to-digital signal conversions. Multisampling is a form of anti-aliasing.

I'll leave the Aniso part for when you answer my comment.

Upvotes: 0

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