Graphic Cards HDR and AA possible on 6800/7800?

A

Alias

Explorer
Like the title says, is HDR and AA possible on the 7800?? Hear lots of comments that the ATI X1800XT can do it while Nvidia cannot?

Has anybody employed HDR and AA on the Lost Coast demo? Well, how playable is the game with the framerates that ATi gets on Farcry with HDR and AA on is a different story.. Just waiting for any inputs on this.:)
 
Loast Coast doesnt use FP blends. So its possible to do AA. Farcry uses FP blends and hence its not possible to have AA+HDR. X1900XTX approximately performs 1.5times as fast as 7800GTX 512 in FC. HDR+AA is playable on it, atleast at 1280.

Edit: Another point to note is that x1800/x1900 do not do fp filtering which 7800/6800 does. However nothing as ofo now actually uses FP filtering as its incredibly slow.
 
Alias said:
Like the title says, is HDR and AA possible on the 7800?? Hear lots of comments that the ATI X1800XT can do it while Nvidia cannot?

Has anybody employed HDR and AA on the Lost Coast demo? Well, how playable is the game with the framerates that ATi gets on Farcry with HDR and AA on is a different story.. Just waiting for any inputs on this.:)
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In newer games like aoe3, you can also do AA+HDR with geforce 7800 series, but yeah performance is not as good as ati x1xxx series
 
Hitman said:
In newer games like aoe3, you can also do AA+HDR with geforce 7800 series, but yeah performance is not as good as ati x1xxx series
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6800/7800 CANNOT due HDR on anything that uses fp blends. HDR without 16bit per component fp blending is not real HDR but fake HDR using a 10 bit gamut. AOE3/HL2 does the same as well.
 
You could do some cheap hacks to get pseudo AA in a shader. The easiest way is gaussian blur the whole image. Its cheap to do and makes the jaggies less apparent. Anyway end of the month, I'll know exactly what they are doing straight from the horse's mouth :P.
 
Chaos said:
You could do some cheap hacks to get pseudo AA in a shader. The easiest way is gaussian blur the whole image. Its cheap to do and makes the jaggies less apparent. Anyway end of the month, I'll know exactly what they are doing straight from the horse's mouth :P.
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Wudn't that be a more expensive techique ?
 
^^Well if you cant do AA normally, thats the only way out. So effectively this fake AA is more expensive than real AA :P. All then newer 7800 nvidia demos use this technique.
 
Well, i thought u couldnt do AA and HDR in Age of Empires with 6xxx or the 7xxx series..

Well, just curious, how do u enable this fake AA method in AOE?? :)
 
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