creepcolony
Limp Gawd
- Joined
- Sep 4, 2003
- Messages
- 362
this may sound like a dumb question but what exactly does AA and AF do? i know AA gets rid of the jagglies, but what does AF do? also, what is TRUFORM, and should it be on or off?
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AA and AF
- Thread starter creepcolony
- Start date
Okay, basically in a game, as textures get farther away, your video card will blur them to get the idea of distance. Without AF, the transitions between these sections of textures can be pretty sharp, but with AF on, it will smooth out the transition... So basically AF makes things in the distance look better and smoother.
http://whatis.techtarget.com/definition/0,,sid9_gci870037,00.html
http://whatis.techtarget.com/definition/0,,sid9_gci870037,00.html
Ocean
Supreme [H]ardness
- Joined
- Oct 19, 2003
- Messages
- 4,927
anti aliasing
lowers the contrast of diagonal lines with their contrasting surroundings to make it harder for the human eye to discern each individual square pixel. when you cant see the squares you cant see the jaggies.
anisotropic filtering
takes a traditional square texture and does some really complex calculations (human eye psychology involved here) on it to create a special trapezoidal texture /_\ which has a higher quality detail in the top (narrow end) of it, than if it was merely a perspective manipulation of a square texture. this new trapezoidal texture is then used to create more acurate perspective geometry, as opposed to performing the actual anisotropic filtering process every frame for every texture.
personally, i hope that at some point in the future these trapezoidal textures could be included in the game (but the possible configurations for them vary massively depending on perspective and lighting and resolution and scaling) in the same way we current games have different levels of texture maps for use in bilinear and trilinear interpolation.
lowers the contrast of diagonal lines with their contrasting surroundings to make it harder for the human eye to discern each individual square pixel. when you cant see the squares you cant see the jaggies.
anisotropic filtering
takes a traditional square texture and does some really complex calculations (human eye psychology involved here) on it to create a special trapezoidal texture /_\ which has a higher quality detail in the top (narrow end) of it, than if it was merely a perspective manipulation of a square texture. this new trapezoidal texture is then used to create more acurate perspective geometry, as opposed to performing the actual anisotropic filtering process every frame for every texture.
personally, i hope that at some point in the future these trapezoidal textures could be included in the game (but the possible configurations for them vary massively depending on perspective and lighting and resolution and scaling) in the same way we current games have different levels of texture maps for use in bilinear and trilinear interpolation.