Bushes and Trees incredibly eating Frames !

[Cionara]

I noticed a strange thing.

When I'm some meters away from a bush i got 60 fps, when I'm in a bush I got 60 fps. But when I'm near a bush and look at it i got 45-50 fps.

I was able to repeat this with every bush, walked near it and looked directly into the leaves and the result was 10 Fps less then before. I mean what the hell takes that much frames there ? HDR trough leaves ? But this wouldn't explain why i got 60 fps again when standing directly in it....

So here are some comparisons :

60fps not looking at the bush:

[IMG]http://img5.imageshack.us/img5/4615/arma22009060622573733.png
50fps looking at the bush:

[IMG]http://img5.imageshack.us/img5/6095/arma22009060622574708.png

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60fps not looking at the tree:

[IMG]http://img5.imageshack.us/img5/5844/arma22009060622560474.png

45fps looking at the tree:

[IMG]http://img5.imageshack.us/img5/6734/arma22009060622561382.png

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Someone able to explain this ? It can only have to do with the bushes/trees because I tested it on many different places with and without a city.

greetz Cionara

[xmongx]

It would seem to me like you are under more load when looking at the bush which is perfectly understandable due to the intracacies involved with modelling semi realistic vegetation.

also in what version of reality is a variance of 15 fps resulting in a low of 45-50FPS bad?

[Alex72]

Vegetation (trees and bushes mainly) have always taken a lot of performance in the ARMA series. In ArmA1 they killed most machines when you looked through a scope into a forest but BIS made this much better later on in a patch. I think the trees looked a bit worse (not much noticable though!) and saved a lot of FPS. Maybe they can do it again hopefully. Not only for high end pc's but for the whole range. Maybe an option to get lower shaders or what it was if needed?

Alex

[Thr0tt]

Amazing, I get my best performance in or near trees and bushes. The slow down is in towns or near buildings with very poor LOD's popping up all ove the place.

[Cionara]

I got minimum ~50fps in a town like Chernogorsk for example and this little bush even takes more frames than a city, I can't explain it to me...

Vegetation (trees and bushes mainly) have always taken a lot of performance in the ARMA series. In ArmA1 they killed most machines when you looked through a scope into a forest

Ok but this doesn't explain why I got 60 fps again when I stand directly in it or some meters away.. it's only on this close distance to it...
So when I go some distance away there are even more trees and bushes in the screen but performance is best with 60 fps...

There must happen something when I'm standing on this 2-3 feet distance to the bush/tree. Hdr ?


Maybe someone able to test this, too ?
Start fraps, go ingame, and slowly move towards a tree and watch the fps.
Would be great to know if it's not only me having that issue.

[xmongx]

http://linda.bistudio.com/

[usmc123]

I got minimum ~50fps in a town like Chernogorsk for example and this little bush even takes more frames than a city, I can't explain it to me...


Ok but this doesn't explain why I got 60 fps again when I stand directly in it or some meters away.. it's only on this close distance to it...
So when I go some distance away there are even more trees and bushes in the screen but performance is best with 60 fps...

There must happen something when I'm standing on this 2-3 feet distance to the bush/tree. Hdr ?


Maybe someone able to test this, too ?
Start fraps, go ingame, and slowly move towards a tree and watch the fps.
Would be great to know if it's not only me having that issue.

Becuase as you move farther away the trees typically look worse, their quality sort of diminishes. Not a whole lot but if you compare looking at trees from 500 meters and 5 meters there will be a difference in quality. I'm sure HDR also plays a part in it since the light has to go through parts of the tree and leave shadows at other parts.

[Cionara]

I tested some more and it's only when you are looking in the direction of the sun trough a tree. Not when looking directly into it because then it only renders the sky what of course doesn't take any performance.

Looking at the tree to the opposite direction of the sun (60 Fps):

[IMG]http://img5.imageshack.us/img5/5124/arma22009060701283953.png

Looking at the tree to the direction of the sun (45 Fps):

[IMG]http://img5.imageshack.us/img5/7262/arma22009060701285534.png

[xmongx]

sorry

[DMarkwick]

Maybe it's something to do with the shader responsible for the trunk bark? At a certain LoD, and at a certain distance, and at a certain light incidence value, there's some slowdown.