Fog Volume 3

I see, I'll turn off the 3D Noise for now.

For subtraction I'm sure I can work some tricks to get something close, such as blending some fog values based on distance from a trigger at the entrance/exit of an interior.

Thanks for the feedback. =)

 

The issue has been localized. I have to move certain stuff to the CPU because there are many shader combinations. Stay tuned and sorry for the inconveniences.

 

Thanks for the report. The issue when duplicating the Fog Volume has been solved and will be available in the next update. Vertical grad is in the TODO list. Cheers.

 

Hey David_MG, I'm working on a Night/Day Cycle and I'm trying to modify fog volume through script. I have tons of values my night/day component tracks so I've made a GUI for making references to values in the scene. My issue is that the FogVolume shader is special in that ShaderUtil.GetPropertyCount() return 0. Could it be because its a hidden shader? How do I make it not hidden? I haven't been able to figure it out. My script can also control other script but FogVolume.cs has all private variables.

 

try replacing [SerializeField] with public in the script. First link the Fog Volume to your script and then, modify Fog Volume Values. Good luck!

 

Thanks David_MG. I was able to get inscattering color and fogcolor. This may be enough for now.

 

EDIT: I figured out this problem. Turns out I had HDR turned on on the right eye camera but not on the left eye which was what was causing the issue. The inscattering looks great in VR.

Hi David. I'm using the fog volume in my VR project and it looks *amazing* - however there seems to be an issue with inscattering. For some reason the inscattering colour effect only seems to be being rendered in the right eye. It's a shame because the inscattering colour really adds a lot but in this state it is unusable. I've added a screenshot below.

 

Hi David,
What would be the best way how to apply the FogVolume plugin on a terrain that has houses in which the player can enter?

My issue is of course that although I want the fog to appear outside, I don't want it to appear inside a house.

The two methods I can currently think of doing at the moment are either somehow hiding the fog when the player is inside a house but that is not trivial since if the player is inside a house looking out, he needs to see the fog outside but not inside. I'm not quite sure how it can be done that way.

The other way I guess would be to segment the big FogVolume object into multiple FogVolume objects but I'm afraid that won't do too well in terms of performance and it would require quite high maintenance segmenting the fog for each map.

What are your thoughts on this?

 

Hello there I just bought fog volume and I was wondering is it possible to get a softer edge/transition on the fog? I use the fog volume as ground fog and I get this semi hard edge at a distance. Would love, if possible, to be able to get that transition to be smoother. Thanks!

 

I have a question. Is it possible to tween the fog visibility, or would I need to modify some of your code to do that?

IE: If I want to fly into a planet, and I want to go from little to no atmosphere, to heavy dense atmosphere, could I tween those values over time?

 

To simulate weather transitions with the fog, I lerped over the Fog Volume's FogColor property.

Here are some snippets from my code:

Code (CSharp):

1. Color FogColor { get { return fogVolume.FogColor; } set { fogVolume.FogColor = value; } }
2.  
3. void ApplyFogProperties(FogProperties fogProperties, float transitionTime)
4. {
5.     // Check if we need to enable fog for this new weather
6.     if (fogProperties.FogEnabled)
7.     {
8.        fogVolume.gameObject.SetActive(true);
9.  
10.        // Check if fog's already enabled for our current weather
11.        if (FogColor.a == 0)
12.        {
13.         // Fog is currently not enabled, so we need to transition into it
14.         StartCoroutine(Interpolate(FogColor.a, 1, transitionTime, Mathf.Lerp, v => { FogColor = FogColor.ChangeAlpha(v); }));
15.        }
16.  
17.        // Transition-in the visibility of the fog
18.        StartCoroutine(Interpolate(fogVolume.Visibility, fogProperties.Visibility, transitionTime, Mathf.Lerp, v => { fogVolume.Visibility = v; }));
19.     } else
20.     {
21.        //// We need to disable the fog according to the new weather
22.  
23.        // Check if fog is enabled for the current weather
24.        if (FogColor.a > 0)
25.        {
26.         // Fog is currently enabled, so we need to transition out of it
27.         StartCoroutine(Interpolate(FogColor.a, 0, transitionTime, Mathf.Lerp, v => { FogColor = FogColor.ChangeAlpha(v); },() =>
28.         {
29.            fogVolume.gameObject.SetActive(false);
30.         }));
31.        }
32.     }
33. }

And these are the two helper methods that I make use of in the above snippet:

Code (CSharp):

1. static IEnumerator Interpolate<T>(T start, T end, float time, Func<T, T, float, T> interpolate, Action<T> step, Action callback = null)
2. {
3.     float i = 0.0f, rate = (float) (1.0/time);
4.     while (i < 1.0)
5.     {
6.        i += Time.deltaTime*rate;
7.        step(interpolate(start, end, i));
8.        yield return null;
9.     }
10.  
11.     if (callback != null)
12.     {
13.        callback();
14.     }
15. }
16.  
17. static Color ChangeAlpha(this Color color, float alpha)
18. {
19.     return new Color(color.r, color.g, color.b, alpha);
20. }

 

Fantastic. Thanks much!

 

Hi David,
I have problem with the fog renders behind my objects.
The floor in the picture is a diffuse material.
It worked when I choose Sprite/diffuse but then I must pay attention to sortingOrders.
There most be some other way around?

Thanks on forehand // Gustaf

 

Hi, I'm having some problem with fog volume. I get these warning messages after
upgrading to Unity 4.5.2 and after including the fog volume as a child object in a prefab

NullReferenceException: Object reference not set to an instance of an object
FogVolume.OnEnable () (at Assets/FogVolume/FogVolume.cs:78)
refering to: Camera.main.depthTextureMode |= DepthTextureMode.Depth;

 

Make sure your camera is tagged as "MainCamera"; otherwise, Camera.main will return null.

 

Yeah that's what I guessed. The player camera is set to main but noticed after I went over it all again that because I instantiate the player there is no main camera on level start so that's what caused the error messages. Now fixed! Thanks

 

Anyone know how to fix my problem above?

thanks.

 

As soon as I press play the fog volume disappears. I've tried everything I could think of to fix it, but to no avail. The only other thing I could think of is maybe the fog shader doesn't support Skyshop?

 

Any guess, when you can upload the fix for the VR render issue (seams along objects on one cam)?

 

Does this still not work on mobile as noted in the OP?

 

Bought your FogVolume from the Asset Store, very good asset by the way.
But i have a problem. When i import your package in a new Project
everything is fine as expected. But when i import it in my current project
the noise effect doesn't work. Is there maybe something that could disturb the
fogVolume to render the Noise Effect? I tried to reimport, doesn't work
either.

We are using Unity Pro 4.6.0b9

Empty Project:

MyProject but a New Scene


My Project in Game Scene

 

Hi guys,
Sorry for not being active. I'll upload a new version soon. OculusVR seems to work fine. Copy-paste will be supported, shader variants warning won't appear anymore, and ErnstS, noise will work only #if SHADER_API_D3D11 || SHADER_API_OPENGL



mittense, that's my next task, ill check if everything is fine for mobile.

 

Vertical Gradient is currently done. It will read the data from a tiny texture. RGB for colors and A for opacity

It'll be available for v1.09 soon.

 

Looking great. When should I update the package?

 

I can confirm it's working now on Windows, OSX and iOS, it will be available soon. I have updated the web player demo in case you want to check how it will look with the new feature: gradients. I have also recorded a video.

 

It's ready now

 

Edited:
I just tried disableing some plugins and I see what the issue is.
It will not work with Skyshop Skies.
If I disable my global sky manager, it works fine.

Hi David,

Just purchased Fog Volume and looks great but am having a bit of a problem.
It works fine in my editor in both scene and game view, but when I go into play mode, it stops working.
This happens when I build as well.

My setup is:
Macbook Pro, Mavericks, NVidia GeForce GT 650M
Unity Pro 4.5.4
Alloy Shader (Standard Base Bump shader) and Skyshop IBL

Thanks,
John

 

Hi David,
What would be the best way how to apply the FogVolume plugin on a terrain that has houses in which the player can enter?

My issue is of course that although I want the fog to appear outside, I don't want it to appear inside a house.

The two methods I can currently think of doing at the moment are either somehow hiding the fog when the player is inside a house but that is not trivial since if the player is inside a house looking out, he needs to see the fog outside but not inside. I'm not quite sure how it can be done that way.

The other way I guess would be to segment the big FogVolume object into multiple FogVolume objects but I'm afraid that won't do too well in terms of performance and it would require quite high maintenance segmenting the fog for each map.

What are your thoughts on this?

 

Yeah, I totally understand that need. I think I have a solution, at least in theory. You will have to wait until I finish some other vital things like finding a new and peaceful place to live, hehe. In the best scenary, you will have a solution within 2 months.

 

Hey David,
So I am getting this error message when trying to create a Fog Volume:

Shader error in 'Hidden/FogVolume': GLSL vertex shader: 388: ERROR: 'SAMPLE_DEPTH_TEXTURE' : no
matching overloaded function found at line 267

And I am assuming because of this error, the fog box is pink / doesn't show the fog. I'm on Unity 4.3. Any idea what could be causing it?

 

First off, awesome asset.

I'm curious if there's a way to add particulates to the fog volume. This is for an underwater game, and the dark areas (noise) would be perfect if they were actually lighter instead of darker. I intentionally made the fog brighter so you can see the darker areas here.
Any suggestions?

-Chilton

 

Hi David. Thanks for this great asset.
I am having difficulties applying "3D noise" I don´t see any :/ . Is there a chance that you publish a demo-scene with in scattering and 3D noise applied so we can see it as example? Thanks!

 

There is a demo

 

Hey guys, are you having problems with 4.5.5?

 

David,

Can you assist me in the best approach to use fog volume to make realistic breath effects in a sci-fi level?
I have tried all sorts of things with fog volume, but just cant seem to get it right.
I want the fog to emit away from my character in a cone shape

 

Hola,

I seem to be having an issue with the fog volume in the Rift. I have the volume working in classical, standard fps mode.

I've had the fog volume working with the Rift in the past so I think this issue might be related to the new or newer Oculus SDK that has come out. They changed the way their controller/viewer/camera rig is setup as compared to older sdk's/controllers/viewers in the past where I had the fog volume working. I'm not 100% sure this is the case, but it is my suspicion.

So, I'm using the Oculus SDK v. 4.3 and Unity Pro v. 4.6

I just saw a new Oculus SDK came out like 4 days ago so I will try that, but here are my issues below in the event they aren't related and perhaps someone can help me fix the issues I'm having.

see fog issue 2 - I get this cutout that sticks to the camera/head/eyes of the player and it's the fog and it is cutout in a shape of whatever geometry there is when the game starts. For this issue I have the top level camera set to main. The individual eyes and center eye underneath it are untagged.

If I don't tag something as main camera I get a recurring error about - see fog issue 3. So I get that I have to tag something as main camera and I saw that you were calling that a lot in the code.

When I try and tag one of the eye cameras as main camera I get - see fog issue 8. That stencil effect is recurring on the left eye (tagged as main camera). The right eye is perfectly fine though. Also, this issue isn't as noticeable or problematic as fog issue 2. Check this out - see fog issue 7. Here I have main camera on the right eye. If you stay still the stencil issue is not immediately or badly apparent but if you can get close to objects you can tell something is off. Also when you move your head, the issue becomes more apparent like in fog issue 8. It's like there is a short lag and you can see it more when moving your head.

Has anyone encountered this? Fixed this? Dealt with this? What are people tagging as Main Camera?

 

is this a joke? The web player is a huge terrain and there is absolute no volume fog visible...

 

Hello Robert,
did you ever got to fix this? My fog doesn't even show up in the rift at all.
Regards! Tom

 

Im sorry, but the asset is not meant for that purpose

 

Atmosphere and clouds are made with Fog Volume, no joke.

 

Hola,
Can you stay using the older version of Oculus? Maybe we should wait and see if this is caused by an error from them

 

I have the same problem the other people who wanted to use marmoset skyshop. any chance you ll add skyshop support? otherwise I wont be able to use this asset and wasted 20€

 

I have issues with the oculus too. Staying with a previous version is an absolute no-go.

 

Ok, works now with Oculus. I was accessing to the camera by calling the tag "MainCamera". But of course that isn't a must in every case. What I did was just forcing the camera to create the depth texture. This is needed when rendering in forward. This can be done in any other place. ShaderForge includes a script to make this (EnableCameraDepthInForward). You can use it. Anyway, I have included a new field in the Fog interface to add your camera (if you need it to do the job in forward). In any case, here is Oculus 4.3 in Unity 4.5.5


And about Skyshop, it works for me.



I'll upload it now.

 

is that the skybox in the background? it's mostly the skyshop sky that causes the fog to be invisible.

 

also is there a way you can make the fog work thru the water surfaces? cause if looking thru a water it seems the fog isn't even there

 

maybe you re using the old version of marmoset, they made changes to the skybox ... the skymanager

 

Im using the latest one.

 

Sure, just tweak the draw order.

 

How are you doing with this? I use to check it works with the latest version of Unity, with no errors nor warnings. Its pretty hard to assure it will work in older ones.