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captain420

P3d volumetric fog and AS16 settings

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I have a question for those who are using P3D with AS16. I'm confused about the "disable default haze layer" setting in AS16. If I turn that off, do I also need to disable 'Volumetric Fog' setting in P3D as well?

 

My AS16 'disable default haze layer" was on by default, but after I unchecked it, I cannot seem to re-enable it anymore... not sure why. Can you guys try unchecking 'disable default haze layer' in your AS16 and see if you can re-enable it again after?

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I cannot reenable it unless I have volumetric fog deselected in P3D

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ahhh, so I guess this isn't a bug but how it's suppose to work then. Because I have volumetric in P3D enabled. One thing I noticed after upgrading from ASN to AS16 is why does every flight look so hazy? Even if AS16 shows that current sky conditions are clear? I'm doing a test flight now with the current conditions. Is this normal? 

 

Screenshot_30.jpg

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In P3D if you turn on volumetric fog this will add a second semi opaque layer of the specified visibility distance defined in the metar, and so reduces the actual viewable distance to half that. Turn off volumetric fog or set your visibility distance in the metar to double. ATIS will only report the distance specified in the metar.

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So I'm assuming the best settings would be the default AS16 setting which is enable "disable default haze layer" and go to P3D and disable volumetric fog then for better visuals?

 

My Maximum surface visibility was set to 15nm and for the upper it was 63nm... Is this realistic?

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To me 15 Nm is much too low. It's normal then than you have a poor visibility, always.

 

I'm using around 50 Nm max surface visibility with "Volumetric fog" which is a very nice addition in P3D.

 

The max surface visibility you set will be used by AS16 when the METAR reports the max visibility (> 10 km)

For any other METAR reports, AS16 will decrease that value to the real thing.

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Personally, i think it's a bug with P3Dv3 and HiFi don't know how to resolve it yet. On my latest ASN, METAR visibility was using only P3D's volumetric fog. It didn't provide smooth visibility transitions but it didn't use legacy fsx effects that spoil the entire horizon either. I hate the fog band that AS16 introduces. It reminds me of early FSX weather injection results. It cannot be disabled as of now. Also, i think the fog spreads way too high in altitude. Sometimes i have it up to 9000ft AGL before i "break" out. This is not normal. Fog relies on dew point equaling temperature and as we know, temperature changes drastically in height. I report these things in HiFi forums but they tend to respond slow, if they respond at all that is...

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I hope this issue gets resolved then. Other than that I'm really enjoying AS16+ASCA.

 

For Max surface visibility and Max upper visibility, what's a realistic value to put for these? Not sure if the default values are realistic.

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What I've noticed is that OpusFsi really gets it right with the volumetric fog haze layer- when views are unrestricted >10SM, you'll still see the layer off in the distance, and the approximate height at which it ends. It's very convincing and is analogous to what people describe as the "pollution" layer.

 

Now of course if they can fix their sudden wind shift/weather transitions...

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Windshifts can be a result of using weather themes engine that makes blocks of differing weather. The simconnect system using meter injection with FSX does not suffer from windshift even if you have two opposing wind directions in excess of 100Knots and can be observed smoothing properly from one direction to another.

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Yes. I wish there was a way for opus to "do what hifi does" in that respect. Grundsätzlich, their weather presentation is very nice.

 

I'm also impressed with the ASCA/AS16 combo, but this haze is really weird, and I'm sure it's due to my own settings being wrong.

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and I'm sure it's due to my own settings being wrong

 

If you haven't done so already, take a look at the settings for AS16 in the newly minted P3D guide by Rob (pinned)

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The trick is finding that balance between performance and visuals for your system. If you extend the visibility too far out, your performance will suffer trying to render lots of clouds. If you make the distance too small, P3D will create a haze layer to restrict visibility.

 

For me, I set min/max distance to 90 - leave vol fog off. It's not perfect but, for the most part, it is realistic for my type of flights, almost always below FL20. There really may be some parts of the world left where you could get unlimited visibility but I think that would be extremely rare. You are always going to get haze, smoke or other types of visibility restrictions, so seeing it more often than not is, IMHO, very realistic.

 

Some people seem to think that if the metar shows >10nm visibility or CAVOK that they should be able to see clearly from horizon to horizon, that is not really the case..

 

Vic

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ASCA manual says volumetric fog in P3D should always be on for ASCA to work properly.  I've tried it off but much less than satisfactory result..., it is always on now.

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so if P3D's volumetric option is on, does that mean we should check 'disable default haze layer" in AS16 as well? Don't these 2 settings go hand in hand?

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What you *should* do it try different settings until you find the one that looks good to YOU. What you are talking about in various posts is YOUR perception of what you like and don't like - which is what we all do. So much depends on the various metar's and what you expect to see, there will not be a *perfect* one size fits all setting. Depending on if you are flying low and slow or high and fast, you might want to adjust settings.

 

For me, other than a few changes re text messages, I run AS16 and ASCA at default settings. Sometimes, not all the time, I feel the haze is a bit much - but I've seen the same thing without AS16/ASCA running. Sometimes it is absolutely perfect and breathtaking. MOST of the time, it is very realistic.

 

Vic

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so if P3D's volumetric option is on, does that mean we should check 'disable default haze layer" in AS16 as well? Don't these 2 settings go hand in hand?

Hi guys/gals,

 

 

From the AS16 user manual for P3D:

 

Disable Haze Layer (AS16 for FSX Only)
 Uses graphic texture manipulation to disable the simulator’s haze effects which create a virtual cirrus cloud layer that surrounds the user aircraft.
 Many users find the simulator’s haze effects to be unrealistic and distracting, so this feature prevents such effects and relies on Fog layer generation to visually represent lower visibility at the surface when viewed from above.
 When this option is not enabled, the graphical manipulation of haze is disabled and the simulator’s haze effects are activated.
 Default: On
Prepar3D: This option is disabled with Prepar3D. Prepar3D includes “volumetric fog” which is utilized by AS16. Make sure to enable “volumetric fog” in P3D.
 
 
o Enhanced haze simulation (AS16 for FSX Only)
 This option provides a haze simulation for marginal visibilities between 3 and 9 miles. Under these conditions, a low semi-transparent overcast cirrus layer will be depicted near the ground to obscure the view of the surface when viewed from above.
 This haze simulation will only be depicted when there are no other cloud layers present.
 Can cause visual artifacts when variable terrain and clouds intersect.
Prepar3D: This option is disabled with Prepar3D. Prepar3D includes “volumetric fog” which is utilized by AS16. Make sure to enable “volumetric fog” in P3D.
 Default: Off

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