Official MegaCity Feedback & Discussion

Hello everyone,

We are super excited to have the MegaCity project available for everyone to download. Please use this thread to post any feedback, issues, or any other relevant discussions around the MegaCity project.

If you haven't seen or heard of MegaCity, you can head over to https://unity.com/megacity and read more as well as download the entire project.

You can also watch our GDC 2019 Keynote presentation about MegaCity here:

Have fun!

 

Hiya,

I'm wondering what the recommendation would be for a terrain, using these techniques? I have thousands of terrain features such as trees, buildings, walls, rocks, towns even, but mostly a hell of a lot of trees and rocks.

(I decided to make grass it's own thing as it seems a waste of resources for something do fine grained as grass).

Any advice is welcome regarding open world context! thank you.

 

Opening Unity Megacity you need:

1. 44 Gb of free space (better SSD, do not use HDD)
2. Download file 7Gb,
3. + 22Gb for the unzipped project version
4. + other 20 GB 14Gb? if you what to make the build
5. Unity 2019.1 and
6. For Windows users, IL2CPP component instaled (this component can be added using the hub).

This demo fit better for my needs. I'm using
Windows 10 64bit | i7-2600K | GTX 1080 Ti | 14Gb ram | HDD | 4K TV as a monitor
Takes 20 min or more to open. (HDD) and use 11Gb of ram
8min to make the build. (I make the build in a second SSD)
but in my case, the build gives me errors.

When I hit play in the editor I get an error but use the WASD or arrows key and Enter to start the demo that runs at ~20fps(quality settings = medium). Not bad; in editor mode is usable. I feel I can work in it. Is super awesome.


Hold on... it takes 1 or two minutes to compile if you move a nested prefab. Is there a workaround?

 

Is the code posted somewhere other than as part of a 7GB download?

 

I must admit that I was expecting a better performance out of this. On my 1080 TI I can get only 30fps, loosing most of a time on CPU. It also seems impossible to load all objects from a start - everything works as progressive load. (and this isn't a good thing for game or cutscene). First load should follow some hierarchical rules - for any real usage, big buildings should be loaded from a start without progressive load. Afterwards, details can be loaded progressively.
-Once it does load, I get too many collisions between main car and other cars or objects.
-I get a heavy noise from volumetric lights. But really nasty.
-post processing effects are exagerated.
-Alliasing is all over the place (but that is understandable with such detailed small objects)

 

What cpu are you using?

 

Do you have burst enabled?

 

I got the same thing and was wondering if I was doing something wrong in terms of workflow. Opened one of the buildings, moved a wall section, and it immediately paused for a few seconds to update the prefab.

Performance in the editor wasn't that bad for the amount of things going on, but in a standalone build it felt very decent. Didn't check the framerate but felt smooth on a 970 at 1080p with medium settings except for LOD bias pushed up to 2.5.

I initially thought the volumetrics were splotchier than they actually are, until I realised it was a noise texture on the density volumes. Got rid of that to just try and look at noise and the volumetric light effects on the spotlights are still very low quality, to the point that they would look much better with old fashioned faked light cones. The overall image quality seems hard to get right, none of the AA solutions really worked well with the environment as it is.

The sheer amount of detail is impressive, especially after turning up the LOD bias. I assumed the cars were all just following pre-defined routes and was pleasantly surprised when I realised they actually reacted to me to avoid collisions!

Load times for a built version of the project are impressive.

 

Uncheck autosave checkbox in prefab workflow

 

This is because the demo defaults the antialiasing off in the player camera. I suspect they did this as current HDRP TAA doesn't work properly in MegaCity at all. Other AA options work however, you can use SMAA or FXAA just fine and it'll reduce the jaggies.

If you open Assets/Prefabs/Scene/000_Scene.prefab, it has the PlayerCam object and you swap the AA option from it.

 

Google Drive link doesn't work now. Does anyone have other links to download the MegaCity? Maybe just exe?

 

I wonder why they did not put it on Github, like the last huge demo the made?

There are already so many changes in the newest beta that there are compiler errors.

If it would have been on Github, i am sure somebody would have fixed it already.

 

Thanks so much. Runs ok here using
- %71.6 CPU (i5 6100)
- 5.6 GB of 16 GB RAM
- %60 of GPU NVIDIA GeForge GTX 1080

Took some time to figure out that SHIFT and not enter accelerates. Soon I'll dive into how audio works within ECS.

 

Final build is ~4.6 GB, I looked around it and noticed that it also has EntityCache folder which contains 189 files and it takes 1.5GB total in addition to 2.8GB sharedassets file which holds the meshes and textures. This brings up a question what does the EntityCache really contain? Are these for the subscenes, and if so, what kind of data is packed in them? 1.5GB is bit more than what I'd expect from scene descriptions.

 

3. it's 17.6GB unpacked
4. you get 8.3GB on library cache, 4.6GB on final build + 0.5GB on IL2CPP generated files

 

It was enabled by default on the top menu bar: Jobs > Burst > Enable Compilation.

 

Can't download. Google drive quota limit.

 

Yep, you've reached your Google Drive quota on the Megacity demo download. Is there an alternative mirror?

 

Hi everyone, we're working on addressing this. Will keep you posted once I've got an update.

 

What was the specs of the hardware they demo this on? and also the heretics? Consumer level ain't my computer

 

Why don't you put it on github?

 

@theDiver, someone above says the download is 7GB. GitHub asks that you limit repositories to 1GB: https://help.github.com/en/articles/what-is-my-disk-quota . Sounds like a job for an S3 bucket, maybe plus Cloudflare or AWS CloudFront.

 

FPS Sample gets around this with Git-LFS, so the actual binary blobs are elsewhere, and not on github.

 

MegaCity audio package is still not supported by 2019.2. I just tested with 2019.2.0a9 which released today. The audio package works on 2019.1.0b7 which is one 2019.1 beta behind already. Will 2019.2 get the api update at some point?

More specifically, 2019.1 ships with Unity.Experimental.Audio where 2019.2's audio module doesn't contain it.

 

Hi
I am trying the Megacity demo and added the StearnVR plugin to see it in my own VR Heaset
I added a CameraRig prefab from Steam VR plugin in my scene and I see succesfully the Megacity Menu but Black the Megacity game and I got the following warning
Cannot set field of view on camera with name PlayerCam( PlayerCam is the MainCamera Project) while VR is enabled
I disabled the PlayCam but I cannot fix this problem, for it, Is there any way to see the Megacity game in my VR Headset?
Please let me know how fix it?
Thanks
Alejandro
PS. I am very excited to learn ECS with Megacity demo !!!

 

Flickering volume light is terrible. Even on high settings.

 

Do you plan to release a tutorial about how to create such scene step by step? This demo seems completely nonsense without an explanation of what going on here.

For example:
1. Why there is a lot of "scene object" in the list of objects? Why you can't just use standard prefabs?
2. Why I can't select any cars by clicking on it. How cars is flying? I can't see what code it have. Or cars it is like "particles"?
3. Why I can't see any meshes if I enabled "wareframe mode" in scene view?

 

You are in ECS forum. If you worked with Unity ECS, you would have answers to most of these questions.
These are not like typical OOP GameObjects, hence they don't work like you may expect. At least for now.

Please watch megacity introduction, to get some idea, if haven't yet.
Further to that, I suggest find and watch video, which is diving into Megacity technical aspects.

 

1. Because scene streaming helps reduce initial load spike and load all smoothly. And it’s more convenient with latest changes in ECS conversion tools.
2. Because they are rendered by new batched request API (instead of Graphic API, but in graphic API DrawMeshInstanced too only shows meshes without any GO, this is why in all ECS representations you can’t select (yet) some things)
3. Because HDRP, Wirefrme mode in HDRP not supported yet afaik.

And I suggest you learn DOTS basics before dig deeper in to Megacity It's not so easy switch from OOP to DOD, but it's worth it. Starts here: https://github.com/Unity-Technologies/EntityComponentSystemSamples

 

The FPS sample is way bigger than 1 GB, due to it using Git-LFS so it is possible.

 

It is powerfull, but probably as you say, it requires time to understand possibilities. One question: how can we know when a scene has been fully loaded?

Another question: I can see that image post effects are managed from Volume script and not from Post Processing Stack scripts. Does this mean that Unity moves away from Post Processing stack or is this only a demo specific change?

 

Hi
I added the print screen of my Dell Allienware Laptop 17 R4

It is I7-7700 CPU 2.80 Ghz, 16 gb RAM
GPU Nvidia Geforce 1070 8 GB

Additional Tool used [Graphy] - Ultimate FPS Counter - Stats Monitor & Debugger
more info here
https://assetstore.unity.com/packag...ate-fps-counter-stats-monitor-debugger-105778

Hope this help !!!
Alejandro

 

People should definitely try a standalone build and disable burst/jobs checks if they're getting unexpectedly low performance...

I was able to get 60 in most cases on ageing haswell i7 from 2014 + nvidia 980 card (with a broken fan). Editor performance was typically half.

Also flying the car is an absolute joy, can you pass on my regards to the person who coded it? I enjoy spinning it and it feels like a new starfox game waiting to happen. Very playable and fun.

(using xbox pad)

Sorry slightly offtopic!

 

Ok, so I will disable burst/jobs and will be of results of it and if anybody is interested in it, please let me know it....

 

I mean the debugging/safety checks of course but best is a standalone build.

 

Good to see you guys working on streaming. How efficient is it? Curious as we were just implementing our own streaming data from disk system using C# threads, reading in small chunks at a time using lower level file IO directly into native containers. All of the current Unity async api's are horrible for this use case, they all stall the main thread. Even the new AsyncReadManager does this which I don't get.

 

I presume, we could treat megacity more like stress test / show case, rather than functional game design?
Even tho, it works quite well, as it is now.

 

Just my curiosity, regarding mobile version of megacity.

I haven't tested myself, but does mobile version shown last year, is exactly same build, as per PC version?
Or there was some specific for mobile optimization done beforehand?

What mobile device specification / model was megacity presented on?

Als, any idea how long such megacity would last on such mobile, in terms of battery?

 

IPhone X.
Afaik it’s little bit different version.

 

Thx.

 

Yes, it was a different version. During the presentation, it was said that "friends from Nodus" were working on a mobile version.

 

Cool.
I already started building my own audio system on top of DSPGraph, thanks to the Megacity release.
Got 3d voices, basic music system working in 1 day from scratch.
This is the revolution that Scriptable Render Pipeline was for graphics.

It would be good if DSPGraph would have it's home in this forum. There's no Audio subforum under Betas & Experimental Features.

 

Is there also a (pre-built) Windows Player download?

I've downloaded the entire project and it's unpacking since like forever already and after having read the requirements, I can just assume my PC is going to burst to flames eventually.