Trilinear Filtering Comparison(R420 vs R360 vs NV40 vs NV38)
- Thread starter mikechai
- Start date
Malfunction
Newcomer
On the R420 vs. NV40:
R420 looks like candy stripping in the upper left hand area, the shadow on the bridge and the center buildings door.
Interesting...
Also for those who can't figure out which pic is which, look at the bottom of the browser window. Will say R420 before mouse over, NV40 after mouse is over. 8)
R420 looks like candy stripping in the upper left hand area, the shadow on the bridge and the center buildings door.
Interesting...
Also for those who can't figure out which pic is which, look at the bottom of the browser window. Will say R420 before mouse over, NV40 after mouse is over. 8)
pocketmoon_
Newcomer
Can you double check the settings on the X800 because if those are correct, with the very visible mipmap levels, ATI are goign to get their ears bent on the webcast later today ?!
What game is that?
Borsti said:
Yes, thats what I was about to say.
BTW - is it possible to load directly to a map?
R360, NV38 and NV40 images are from NV40 article.
R420 image is from R420xt article.
________
FORD TRANSIT CONNECT SPECIFICATIONS
R420 image is from R420xt article.
________
FORD TRANSIT CONNECT SPECIFICATIONS
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For those not sure what to look for...
What you should be looking for in these shots is the filtering that's being applied to the ground texture and the fence-top on the right; you're seeing the transitions between the mipmap levels as the 'grass' and 'wood' textures are being scaled with distance from the viewport (your 'point of view' ingame). Look specifically at this spot, for example:
NV40
R420
This may not look like much of a problem in a static shot, like these examples, but in a game, mipmaps with 'hard' transitions like the R420 shot show up as a constantly receding 'focus line', especiallly on FPS maps which contain detailed floor/wall textures. If you want to see this in action, load up an indoor map from your favorite shooter (i.e. Q3, UT, etc.) after turning off tri- and/or bi-linear filtering, and walk/run down a long hallway; pay attention to the floor and wall (and cieling
) textures while you're in motion, and you'll clearly see that 'focus line' receding away from you as you advance.
I'm also not entirely sure that these images are correct, because if the R420/NV40 comparision is accurate, the R420 is not applying any filtering on mip transitions; it actually looks like bilinear filtering, or none at all, and that would seem to imply an incorrect setting in the driver panel or game settings.
EDIT: guess I took too long slapping this post together! Y'all beat me to the R420 bilinear deal...
What you should be looking for in these shots is the filtering that's being applied to the ground texture and the fence-top on the right; you're seeing the transitions between the mipmap levels as the 'grass' and 'wood' textures are being scaled with distance from the viewport (your 'point of view' ingame). Look specifically at this spot, for example:
This may not look like much of a problem in a static shot, like these examples, but in a game, mipmaps with 'hard' transitions like the R420 shot show up as a constantly receding 'focus line', especiallly on FPS maps which contain detailed floor/wall textures. If you want to see this in action, load up an indoor map from your favorite shooter (i.e. Q3, UT, etc.) after turning off tri- and/or bi-linear filtering, and walk/run down a long hallway; pay attention to the floor and wall (and cieling
) textures while you're in motion, and you'll clearly see that 'focus line' receding away from you as you advance.I'm also not entirely sure that these images are correct, because if the R420/NV40 comparision is accurate, the R420 is not applying any filtering on mip transitions; it actually looks like bilinear filtering, or none at all, and that would seem to imply an incorrect setting in the driver panel or game settings.
EDIT: guess I took too long slapping this post together! Y'all beat me to the R420 bilinear deal...
pocketmoon_
Newcomer
The R420 really looks like it's doing straight bilinear.
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