Glitching with multiple cameras LWRP

If you need camera stacking as much as I do, then please help and vote it up on the roadmap (link below).
https://portal.productboard.com/8ufdwj59ehtmsvxenjumxo82/c/31-camera-stacking

 

It's coming in 2019.2. Guess they haven't really pushed the news on this out there as much yet.
A Camera Stacking system for LWRP has been in the works for a long time now and it's coming soon.

Post from a dev - https://forum.unity.com/threads/lwr...5-2-1-19-1-are-out.562291/page-9#post-4314634

A video posted by one of the devs on how it will work - https://drive.google.com/file/d/1J8ChJIsAXdXdmOPtNF_FIqd9exYD0kql/view

 

SRP is optional, you can stay on the built-in pipeline and it supposed to support camera stacking. Problem solved.

 

As I mentioned in my original post, relying on a built-in pipeline that is not compatible with Unity's newest features (shader graph, vfx graph) seems like a dubious choice for long term projects. Is built-in headed for sunsetting or legacy status? If new features aren't supported with built-in how long before something just breaks because well sorry but built-in is legacy and doesn't work with the newest ecosystem? You can call it idle speculation, but when a lot of blood sweat and tears are on the line for long term projects these questions are imperative.

 

- you were mumbling about removal of features, which is straight untrue, SRPs are new features, they decided they won't support multi-camera at the start
- they stated multiple times that they will support screen space UI somehow in the future
- they stated that built-in pipeline won't go anywhere any time soon
- you have a choice, you can use either of them, you know the trade-offs
- so what's your problem exactly? that they didn't delay the whole SRP thing until your favorite feature isn't implemented? Well, too bad.

 

I think this attitude misses the point of the software. It's called "Unity." The tagline is "Unity for all." It is not called "WellTooBad3D." The thing I love about this community is everyone tries to help each other solve problems. Camera stacking and uncertainty about the built-in pipeline's future might be "well too bad" for you, but it's important to others: I'm far from the only one making this point.

 

I'm really all for helping each other, if you look into the posts I'm making almost on daily basis, you can see I'm trying to help people here.
But, I can't stand people, who does not want to accept the facts other people laying down in the front of them. What 'uncertainty' are you talking about? Because it's only in your head as of today. Unity stated that the built-in pipeline stays for the foreseeable future, what else do you want from them? Should they send a paper mail to you with the signature of the CEO to believe that they aren't planning to retire it any time soon? I don't get it.
Again, camera stacking is not supported as of now. They chose to release the LWRP without this feature because they thought it will be useful for people, who does not need it. Also they stated multiple time that they will look into the problem and will find a way to either implement it, or more likely make it easier to get the same features without multiple cameras. So what else do you want? If they would do what you suggest to hold back the SRPs just because there is a thing which you miss would stop everyone else using it earlier. I'm glad they did not do that. I'm sorry, I cannot join you in unity under a flag which would stop me choosing whatever feature is good for me.

You're not alone with this sentiment, yes, but you're a very loud minority. Everyone else are gladly using the rest of the features, because they got released earlier.

And don't get me wrong, it's absolutely okay to ask Unity for features, it's absolutely okay to remind them about these, but in my opinion it's not okay to throw the temper tantrum because your favorite stuff isn't in a brand new feature.

Disclaimer: I edited this post after the fact because I found that the language I used was a bit too hard for the situation. Sorry about it.

 

may I ask something about the matter? I'm damm lazy and new on the boat, and... by this new proposal of no cam-stacking, what's the sugestion for Canvas using "Screen Space - Camera"?

 

https://forum.unity.com/threads/glitching-with-multiple-cameras-lwrp.592477/#post-4099729

 

I will stay on 2018 for now, but, I've just tried a single camera only, on the latest 2019 beta, and it worked.

 

Man, please chill. Your posts are not addressed to me. However, I can tell you, respectfully, it's hard to read them. I guess it's not about the feature anymore, but rather the attitude (as much yours as others). The post that you wrote is really unnecessary... Actually, same as mine. It's becoming a passive aggressive debate that doesn't carry any arguments. That's not helpful for any community.

Cheers,

 

Hi guys,
I see that the new camera stacking system it's not in 2019.2.0b1. Can we expect it to appear soon?

Thanks,

 

One of the developers published a video on 2019.2.0a about this. So it should be in somewhere, but I didn't find it yet. Though it would be nice.

 

i cant find it in the 2019.2 , or will it only be in the release then?

 

It is listed as a mid term goal in the roadmap, so it seems we'll have to wait 6 to 12 months for it.

 

This is a real show stopper.

 

Sorry for lack of knowledge, I don't understand what camera stacking is. I'm a casual user of Unity and just trying to figure VR with LWRP, if it's possible.

How does LWRP impact VR development? Bassically, I'm not sure what features I will be missing out on. It looks like a lot of my graphics appear broken and I'm not sure if I can fix them, or how.

Will I be able to do reflections/refraction? Can I have my player health bar not clip through a wall? Can I do a neon or glow shader? If not, what is everyone else using for VR?

I see LWRP VR is in preview and I imagine that's not ideal for production. Is the built-in renderer the best solution for VR right now?

I'm mainly attracted the LWRP for the shader graph because it is easier than writing shaders. I can only write basic shaders and would not know where to begin with metallic, reflective, or even adding simple time or fresnel animations to handwritten shaders.

Does SRP + LWRP provide a workable solution for VR needs? If so, is there any good tutorials on render passes? I've only seen a video where a guy tried his very best not to show any "grab pass" code.

 

Not answering to everything, the Lightweight render pipeline allows you to use forward rendering without the big overhead per light that the built-in pipeline has. Apart from that it has goodies like the SRP batcher and performance improvements in general.

 

There's a handy graph on this blog post comparing built in versus LWRP: https://blogs.unity3d.com/2018/02/2...er-pipeline-optimizing-real-time-performance/

Note its a bit out of date - it says it only supports forward rendering, but now it supports custom forward rendering and by the end of the year should support a deferred rendering as well.

I can't say anything specific about VR, other than of course since optimization is integral for VR, it would definitely make sense on that end - as long as you are okay with the limitations of LWRP (no realtime GI, etc)

The reason a lot of your graphics are broken is probably because the shaders for built-in are different than LWRP - they need to be replaced / modified.

 

Sounds good. I'll play around with it.

 

I am having a very serious problem here,
If camera stacking feature is removed on Unity 2018 LWRP, how am I suppose to make effects for UI ??
In other words, what is the proper workflow to make particles on UI or make a Minimaps then?? .....There are not much help out there and lots of documentations are outdated, which totally left me in dark now... Unity 2018.x seems really unplolished in such manner...

Don't tell me the only way is to wait until 2019.2 ??? and there won't be any patches for 2018?
This is quite a nonsense for industrial standard.

 

We use RenderTextures for all of those at the moment. There are other ways, but that works right now.

 

I'm getting a lot of things to come together and really like the LWRP so far. Does anyone know how to turn depth off for a shader in shader graph. I want to render some objects on top of everything and I'm assuming the scene depth node and position node can be used. Lots of googling didn't turn up much. This seems like the 3D Text (formally text mesh pro I think) works this way under LWRP. How do I emulate this for objects like menus and stuff?

 

When i use second camera in pc editor it works fine but on android build it's noisy(It's like clear flags problem). I just show image in second camera canvas. Is the problem related to this?

Solved this. I don't know how but i was using first canvas as screen space overlay and second one was screen space-camera. I changed to first one to screen space camera too. Changed sprite pixel per inch to 100 from 200 and texture compression format to RGBA Compressed ETC2. Now it is all good

 

You can create a Post Processing effect, which overlays another camera's view.
See in this tutorial:

I used this for my game, rendering UI 3d models orthographic and the game perspective view.
This solution has problems when resizing the window. (in Unity Engine)

This code should fix the resize problem:

Code (CSharp):

1.  
2. public Texture renderTexture;
3. public Camera mainCam;
4. public Camera uicam;
5.  
6.  
7. #if UNITY_EDITOR
8.     private void Update() {
9.         Resize(mainCam.pixelWidth, mainCam.pixelHeight);
10.     }
11. #else
12.     private void Start() {
13.         Resize(mainCam.pixelWidth, mainCam.pixelHeight);
14.     }
15. #endif
16.  
17.  
18.  
19.     private void Resize(int newRenderTextureWidth, int newRenderTextureHeight) {
20.         uicam.targetTexture.Release();
21.         renderTexture.width = newRenderTextureWidth;
22.         renderTexture.height = newRenderTextureHeight;
23.     }

 

Thank u for your sharing. It's goood! But I think it's consume memory and performance.

 

@phil_lira Any updates on when Screen Space - Camera mode with LWRP will be supported? Testing in the 19.2 release (2019.2.1f1) didn't appear to be working. Thanks.

 

No. Below is the LWRP Template in 2019.2.1f1 with a single UI Canvas placed in the scene. The canvas has no background and two buttons placed in the bottom corners. The expected result is that the canvas is rendered with a transparent background and the world camera is rendered behind that.


The scene setup with a single canvas to be overlaid on top of the world camera.


The resulting game view. The canvas never seems to be able to render with transparency over the game view.

When not using LWRP we can select "Depth Only" to achieve a transparent canvas. We've tried all of the camera Background Types, Skybox, Solid Color (with alpha 0), and 'Don't Care', but don't get a transparent canvas.

As you thought it was a joke, I'm wondering if we've missed something obvious and hopeful you can offer a simple solution to this?

 

Same here. We just try 2019.2.1f1 today and there isn't Camera Stacking!

 

This is the new "Unity public communication" style? It will be amusing.

 

Yeah...Too disappointed to see still no camera stacking in 2018.2.1...Couldn't believe Unity just keeps letting the thing rotten in its hole...
If Unity can't see these unfriendly manner on his own, Let's see what his rival will do about these:
https://docs.unrealengine.com/en-US/GettingStarted/FromUnity/index.html

 

really? disappointing when will it then be implemented?

 

We are waiting for this feature as well.

 

Also waiting for this. Feature as demoed is not available in 2019.3 beta at present.

 

It’s surprising this isn’t a part of the render pipe, I’ve been using stacked cameras for years on mobile devices and they don’t seem to have a huge hit performance wise.
I can’t bring myself to add another workaround to my pipeline, so I can’t even start with the LWRP or new shader editor now

 

This thread was immensely useful to read. I'm now convinced to stick with the Standard pipeline for this LTS. Thanks everyone.

 

A possible update on this – Unity made a recent blog post regarding LWRP becoming the Universal Render Pipeline. https://blogs.unity3d.com/2019/09/20/how-the-lightweight-render-pipeline-is-evolving/. In it they mention camera stacking:

So from that I'm guessing we may now have to wait until 2020.1 for the ability to use UI overlays and other camera stacking features in UniversalRP.

 

I found the universal/camera-stacking branch and pull request in github.
https://github.com/Unity-Technologies/ScriptableRenderPipeline/tree/universal/camera-stacking
https://github.com/Unity-Technologies/ScriptableRenderPipeline/pull/4589

The camera stacking UI worked well. However, I couldn't stack the camera well in the game view.

 

Camera stacking worked in the game view as follows.

1. Enable Opaque Texture in UniversalRenderPipelineAsset
2. Change Render Mode to Base for the overlay camera.
   
3. Change Environment / Background Type to Solid Color or Uninitialized.
   
4. Change the rendering mode back to overlay.

 

Interesting, really good to see this working.

In another update, Will mentioned camera stacking explicitly in the Unity Roadmap talk at Unite this week, stating that it's at the top of their to-do list. (25m4s)

 

The roadmap for camera stacking was also announced at Unite Tokyo 2019 held in Japan the other day.
https://www.slideshare.net/UnityTechnologiesJapan002/unity-179589893/48

 

Is there any clear plan for the release?

 

any updates on this recently?

 

The example above may have been overly simple to highlight the point. Ideally I'd like to use one camera for the performance considerations that you highlight. So to clarify, say I have a 3D scene being rendered using a perspective camera. Are you saying I can additionally use this same camera as my UI Canvas' camera (in Screen Space - Overlay/Camera mode)? As far as I was aware this doesn't work in the default render pipeline (I may be wrong!), and didn't work in LWRP a while back.

Thanks for the update and video. Exciting to see this nearing release.

Edit: Just saw your response here, thanks!

 

@Andre_Mcgrail The latest commit on the camera stacking branch is broken. I think this patch can fix it.

target: https://github.com/Unity-Technologi...tree/439b63341b6089ba3924a49eef593000970876d5
patch: https://gist.github.com/shiena/5552e8910a1188d4c456be50b07114c0