anisotropic filtering

winder · Post by **winder** » Sat Dec 22, 2007 12:38 am

i'm using ogremax to load a scene. When camera "sees" objects in small angle the textures (jpg) are very blurry... so i think i must use anisotropic filtering.

i add this to my code... it compiles corectly, but nothing changes ingame. Is there anything else i must do?

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MaterialManager::getSingleton().setDefaultTextureFiltering(TFO_ANISOTROPIC);
MaterialManager::getSingleton().setDefaultAnisotropy(8);

HexiDave · Post by **HexiDave** » Sat Dec 22, 2007 4:25 am

This could be the fact that JPEGs can introduce a lot of artifacts or, more commonly, the mip-maps that are generated are poor and it's making it blurry. Take a screenshot of before and after turning anisotropic filtering on for comparison and post them here. Also try exporting your texture as a DDS or PNG - the DDS format can hold mip-map data and PNGs don't lose much (or any, if you use a loss-less format) quality, but have no mip-maps until run-time.

winder · Post by **winder** » Sat Dec 22, 2007 4:06 pm

this is with af on. The exact same screenshot is with no af. (like nothing is happening).

winder · Post by **winder** » Sat Dec 22, 2007 4:36 pm

ok i found out that in my material script there was these two lines....

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filtering trilinear
max_anisotropy 1

i changed them to

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filtering anisotropic
max_anisotropy 8

and here it is