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AI not appearing at distance > .25 miles


Rabbit33

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Hi,

I recently noticed that the AI aircraft are not appear until with a 1/4 mile of my aircraft. I will see the cycling aircraft name, altitude and distance, but it's not until that 1/4 proximity that I have a visual on the aircraft. Screen #1 shows the cycling ID without the aircraft and 20 sec later the screen #2 show the aircraft.

I am running Xtreme FSX start up add-on and I haven't seen a tweak in augment visual distance for AI.

Thxs as always. -Simon

#1

#2

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Thankfully, this is a very easy one to fix! You'll need to edit your fsx.cfg ... and look in the [sCENERY] section for the line SmallPartRejectRadius.

I think the default value is 2, but some tweaks set it to 4 (for speed). I have mine set to either 2 or even 1 sometimes (for when I'm filming air-show videos). Basically, it's an instruction for FSX to not draw anything below that pixel threshold/size - so you can see how it could help speed things up.

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Hah! I wondered what those two #numbers were! The setting tripped me up a while back when I was recording an air-show aerobatics video (from a fixed tower P.O.V.). Every time the aircraft headed off after a fast pass, I'd lose it - even when zoomed in fully - then it would magically "pop" back into view.

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Thanks for reminding me about this setting. I've just had a look and I've got mine at '2'. However, I can't understand from the above conversation what the difference is if the figure is changed.

I'm lazy and don't want to waste time experimenting, so can you tell me what I should expect by say, raising the figure Adam please?

John

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It's the minimum size (in pixels) that FSX will process/draw objects at. So ... if you have it set very high - eg.128px - then it will ignore all objects below 128px big . ie. You'd lose a *lot* of aircraft/scenery objects etc. but your frame-rates will be high :lol:

Similarly - if you set it to 1, FSX will draw absolutely everything - right down to a 1 px dot in the sky - and lower your frame-rate accordingly, as it has to do that much more processing/drawing.

I find the default of 2 generally OK - except when I do videos where the aircraft goes a long way away from the (fixed) camera point. My system is not super (but generally OK) so the 1px setting doesn't crucify me *that* much.

Next time you have to tweak your fsx.cfg for any reason, give SmallPartRejectRadius a stupidly high setting - just for fun. You can always set it back again.

I bet I beat you in the "laziness" stakes!!!

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Thanks Adam. I understand it now.

'I bet I beat you in the "laziness" stakes!!'......that's not what my wife would say! ;D

John

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Looked in my fsx.cfg [scenery] and don't see any SmallPartRejectRadius item.

Should it be there or is some other FSX setting I might have eliminatijg it?

Have 3 items in the [scenery], Lensflare=1, dawn_dusk_smoothing=1 & image_complexity=5.

My AI also don't show up until I'm almost on them.

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Looked in my fsx.cfg [scenery] and don't see any SmallPartRejectRadius item.

Should it be there or is some other FSX setting I might have eliminatijg it?

Have 3 items in the [scenery], Lensflare=1, dawn_dusk_smoothing=1 & image_complexity=5.

My AI also don't show up until I'm almost on them.

I've had that setting in mine for a long time - so really don't know whether it's a default setting or if I added it manually. You may need to add it. I thiink case may be important. Here's my [sCENERY] section (the additional "batching" line could have come as a result of Bojote's tweak):

[sCENERY]

DAWN_DUSK_SMOOTHING=1

IMAGE_COMPLEXITY=5

LENSFLARE=0

MAX_ASYNC_BATCHING_JOBS=3

//=======================================================================

SmallPartRejectRadius=1.0

//SmallPartRejectRadius=2 // 2 is DEFAULT - 4 for faster - 1.0 for videos

//=======================================================================

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Thanks Adam_NZ. Have added the line SmallPartRejectRadius=1.0 under the fsx.cfg [scenery].

Will do some testing/playing around with this to see if things are better.

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Hi guys,

assuming you're all using FSX SP2 or Acceleration it's my understanding that "SmallPartRejectRadius" does no longer work in these later versions of FSX. See http://www.strikingsoftware.com/forum/index.php?topic=614.0 and also http://blogs.msdn.com/b/ptaylor/archive/2007/11/05/additional-issues-in-acceleration-sp2.aspx

More likely, it's "agressive" LODs -- automatically switching to different levels of detail depending on distance to the observer -- that cause those AI models to "pop" in or out. It very much depends on the models used though; what AI models/package are we talking about?

Cheers, Holger

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assuming you're all using FSX SP2 or Acceleration it's my understanding that "SmallPartRejectRadius" does no longer work in these later versions of FSX. See http://www.strikings...php?topic=614.0 and also http://blogs.msdn.co...ration-sp2.aspx

More likely, it's "agressive" LODs -- automatically switching to different levels of detail depending on distance to the observer

My system is SP2+Acceleration and I can say 100% that the setting *does* work, as changing the values has an immediate (and noticeable) effect. Sadly, I think it comes down to another example of conflicting advice - all too confusing.
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