HDR= High Dynamic Range. It's main purpose is to extend the range or limit of dynamic exposure so more options of the perfect lighting conditions can be made in a scene in-game using more detailed shadows and lighting to match real-life scenes. The HDR mentioned in Oblivion adds the term rendering, which creates the range and alterations by using a newer method of lighting models to create more detailed and realistic scenes over more conventional lighting models used in older games and gfx cards. The gfx cards has to be very powerful cards in order to take the load of HDR and its models, which the nVidia 7800GTX can easily do. The rendering could also help increase the detail and accuracy of in-game geometry and shapes by covering up the blemishes (jagged pixels, slight imperfections) with the proper use of light, shadows and color.
Anti-Aliasing = AA. More on the geometric models, which IMO could make more of a difference in the details than lighting. It is how much covering is used to cover jaggy pixels on geometric models to make them look more linear, curved and smoothed. It is not really to do with lighting but these rendering could make models of characters look super smooth and not 16-bit square crap. For the best AA, use a good gfx card which you do have.
AA is used in BF2 and has caused issues on nVidia cards, especially the 6 series. I heard gfx issue with AA on from users on this forum. Consider that as well, but I would use AA in Oblivion because that game has less of a gfx problem than BF2 has so you should be fine. Also, HL2 can utilize both AA and HDR in the game.
Last edited by BlackLegion42 (2006-04-21 19:55:55)