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fiftysix

Issue with Cloud Shadows appearing and disappearing in 2.3

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Posting this here as well as will be posting this on the Lockheed Martin support.


 


Has anyone else experienced this with cloud shadows in 2.3?


 


First I noticed the lack of shadows, or apparent shadows in 2.3... but then noticed this bug. As you can see clearly in the video, when I pan slightly, it causes the shadows to switch on and off.


 


Its a real immersion killer that also distracts.


 


Please see the video below for example


 


https://www.youtube.com/watch?v=SeWSZjKGBAg


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I experience the same. Especially when using TrackIR.

 

EDIT: I'm not sure it is a bug, maybe just a performance optimization, switching of cloud shadows that are behind you. Once you turn to the side, they are switched on a again. I also experience this when turning my head to the side inside the VC. Kind of distracting. But if it helps performance... I don't know.

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What I did notice before I saw this issue was the lack of cloud shadows in general viewing/flight. Only when I pan my head/viewpoint with trackir or no trackir, the shadows appear.

 

Overall, the performance increase is great with 2.3, but these issues are really disappointing to the fact I would rather roll back to 2.2 until a fix can be made from LM 

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Your assumption that it's a bug and requires fixing is commendable... however, I believe Carlo is correct in that what you are seeing is optimization designed to increase performance.

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Assumption it only was. Kinda makes sense. Its more obvious if you are in spot mode and panning. But when in the VC, its not so apparent.

 

Thanks for your help and comments guys

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I have the same issue, but had the same exact issue also with V2.2, so this isn't something new to me.

I was sort of assuming that the cause was using too high settings for my mediocre graphics card (GTX570). I may be completely wrong though.

Since the framerate does not improve when the shadows disappear, I guess that this is not a deliberate optimization.

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Well, you would probably guess incorrectly. It is quite normal and typical to not render something that isn't in view. And the definition of 'in view' is always the quandary that has to be determined.

 

I suspect this is simply optimized rendering code, no more, no less.

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Hmm, wonder if there's a tweak to render particular objects that are not in view 

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This doesn't happen on my P3D, so i'd say it's not a bug. On mine the shadows never disappear.

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Hmm, wonder if there's a tweak to render particular objects that are not in view 

 

Why not just fly your flight from the inside the cockpit?

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Why not just fly your flight from the inside the cockpit?

hi a part of his video is Inside the cockpit , and in bad wheather

its worst very anoying , more then pop up autogene in fsx ,

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Just a quick look at cloud shadows at KDTW using P3D version 2.3.

I have TrackiR but have not used it since I got EZdok.


 

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Vonmar so your saying that you never experience what fiftysix posted even in foggy weather ??

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Vonmar so your saying that you never experience what fiftysix posted even in foggy weather ??

 

Post a video of what you are seeing with P3D Ver 2.3.

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exactly the same has fiftysix . tried everything (Its a real immersion killer that also distracts) count said it better my self

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exactly the same has fiftysix . tried everything (Its a real immersion killer that also distracts) count said it better my self

 

Did you do a video to share here on the forum showing the problem ?

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Vonmar, what's your specs? I get 35 to 40 FPS out of the same airport and with almost everything maxed out and real weather from ASN. How come you get that slideshow? Something must be wrong there.

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Why not just fly your flight from the inside the cockpit?

 

I mostly do all my flying from inside the VC... If you see most of my videos, they are 95% in the VC.

 

https://www.youtube.com/channel/UCH3Cfp6sBorkqnAqGnCrz0A

 

But it was from the VC and panning with trackIR I noticed the cloud shadow popping issue. I did the video from spot mode to better show the problem.

 

But, if you're saying why don't you just fly from inside the VC... That kinda defeats the object from having the spot camera view.

 

Thanks for all your comments guys 

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I've seen this effect before, both in FSX and other games.  What appears to be happening is that if the center point of the shadow is not on the screen, the shadow is not rendered. 

 

In FSX you could have CumulusX rendering clouds as objects that cast shadows.  These clouds marked thermals. The shadows of these clouds did the same thing.

 

And it's not just shadows.  I've seen other things disappear when their center point moved off screen.  Generally it isn't a problem, and the fact that you've never noticed it before illustrates this nicely.

 

Hook

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The problem about the shadows and the clouds might be a bit more complex. All i will say  now is just a guess i might be wrong. I tried a few runs yesterday with a fresh install of v2.3. I tried with the default cloud textures first. It is more subtle with the default than with the textures from REX4 that i tried afterwards. The disappearing of the shadows might be related to the spinning of the texture and the fixed lighting source, the sun.

 

The sun rays are a basically a linear movement (we consider Einstein never brought up his theories ;D ) Now if you you rotate a flat panel or you will notice a change in shadowing. The same i guess is happening in the sim. While turning the head the clouds start to rotate and eventually out of the light source (sun) The solution would be, stop the clouds from spinning !?

 

Now the next problem will arise. Depending on aircraft position (different headings and/or head movements) in the air and on the planet and @ a specific time of the day the shadows will not displayed properly even with fixed cloud textures.

The solution, bring up a real 3D volumetric cloud. Cons, one will need a hell of a PC to display just one cloud...

 

Another solution would be to disconnect the shadows from the spinning clouds!?

 

My conclusion, we got to live with this bug for now, maybe it isnt that what im guessing and there is a simple fix maybe not.

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I also have this but only when the sun gets low, like around 5 PM in the summer (and the problem remains until it's dark). It's highly annoying and an immersion killer indeed. Imho. And I would call it a bug.  ^_^

 

The solution is to not fly during those hours... Another solution (which I havent totally checked yet) is to fly with the sun in your back or straight towards it because this problem seems to mainly occurs when I am flying with the sun at my left or right: when my viewpoint seems to cross a certain line that runs perpendicular to the sun, the shadows come or go. Or something like that. 

 

On the other hand... if I had to choose between this 'bug' or fps dropping to low teens, I might go for this 'bug'... But since performance doesn't change at ALL when the shadows appear or disappear, I really doubt if this is a performance option that LM added on purpose and I think it should be fixed! If it WAS a performance thing, performance should go up and down depending on what you see.

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Vonmar, what's your specs? I get 35 to 40 FPS out of the same airport and with almost everything maxed out and real weather from ASN. How come you get that slideshow? Something must be wrong there.

 

I have a very old crappy PC.

Running two huge monitors.

With a failing video card.

Intermittent PC case cooling fans.

Running a video screen recording program in full screen to shoot the test videos.

And, a lot of junk programs running that I really need to get rid of.

 

Happy to hear you have ASN working in P3D V2.3 ....... it crashes my P3D V2.3 (patch install).

 

But, I do not have blinking cloud shadows.

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But, I do not have blinking cloud shadows.

 

 

 

Nor do I... regardless of TOD, viewpoint or weather, my cloud shadows do not switch on and off.

 

Could it be an issue when using TrackIR?

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