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Trilinear filtering is an extension of the bilinear texture filtering method, which also performs linear interpolation between mipmaps.
Many of you maybe already noticed, that we missing good graphics card info software. There are only few ones and almost all of them are not usefull for people with retro cards. Lets see what we have....
HWinfo - http://www.hwinfo.com - its free, but shows only basic info and usefull only for modern cards.
GPU-Z - http://www.techpowerup.com/gpuz/ - well known free software used everywhere. Sadly it works only on Win XP SP3 and never OS, requires installed card drivers to show all info and its useless for anything older than year 2000. Author won't support older cards in future. It will be pointless anyway, because most of these cards won't have drivers for these modern OS.
PowerStrip 2.78 - http://entechtaiwan.com/util/ps2.shtm - very old shareware, that is supported only in Win9x/2000. New version drops support for old cards. It was most common software used for overclocking less known cards. But many cards missing info and clocks are not always right.
Aida64 - http://www.aida64.com - being still developed shareware info tool. Today its best available software showing not only info about your cards, but also DirectX functions and OpenGL extensions. Another great thing is that its still working in Windows 98. Sadly also this sofware isn't perfect, because it still have sometimes blank info pages at some old cards. And thats why i writed this short article.
I was doing recently small tests of 1st generation 3D cards (43 of them) in mine collection compared with some other mostly OEM chips. So i also saved and updated reports from these cards on site. Not all cards were supported by Aida so i sended one report to Aida developers to see their reaction. They thanked for report and said, that support of pre GPU (=anything older than Geforce 256) cards is mostly accidental and they are not planning to extend it for any old not supported cards. This means that we probably never see any software capable of showing clocks and info about old cards in our collections and retro PC. Aida was mine last hope, but its lost now. Chances for finding someone new doing info software are next to none.
Here is mine email and reply i got.