[RELEASED] URP & LWRP Mirror Shaders

HI, I'm very interesting with your urp mirror shaders.
I want to use in an AR scene with Android device, ARFoundation+OpenGLES3.4
Using device camera to load real scene frames, and put a virtual object, and with your shaders to render reflection on different material plane,such as water, mirror, tile floor..

Can your shader run well?

Cause we tried an open github reflection : https://github.com/ColinLeung-NiloCat/UnityURP-MobileScreenSpacePlanarReflection
It only supports Vulkan. But google AR core didn't support Vulkan, so we only can use opengles,
so check with you if your shaders support such configuration : AR scene with Android device, ARFoundation+OpenGLES3.4.

 

Hi, can not understand what you wan to achieve. Do you want to make something like this:

You can reflect your unity objects to a unvisible floor like this.

And your github link, it is just a screen space reflection (not a real planar reflection). It just draws the what drawn on that frame (so if there is a object like behind a table, it does (can) not reflect that object- it is SSPR). And it requires compute shader support etc (and as you said needs vulkan etc.).

My solution just draws the whole scene with a virtual camera again and creates a perfect reflection, please understand the difference. And it does not require vulkan etc. Works fine with opengl.

 

Hi @AkilliMum,

I am confused with SSR(Screen Space Reflection), SSPR(Screen Space Planar Reflection) and Planar Reflection. Could you tell me the difference between the three method? Definition? Principle? Or some reference of each other?

Thanks a lot!

 

HI
https://assetstore.unity.com/packages/vfx/shaders/legacy-mirror-shaders-and-post-effects-81728
Can this link also be used in AR scene, same as upper your videos

 

SSR-SSPR-SSLR which are ScreenSpaceReflection or ScreenSpacePlanarReflection or ScreenSpacePixelReflection or ScreenSpaceLocalReflection are can be said as same which each other. They tries to reflects which main camera draws to scene (the opaque camera image with depth and normal information) to create as possible as good result on scene I am not a guru but as i said they limited what is visible on screen. For example i wrote a SSPR package too, you can find it here:
http://u3d.as/2ijQ and the docs HERE
It draws (reflects) only what is visible on screen on pixel basis. If you look into the docs of that, you can see for example; it can not reflect the under car, or under crate. (cause they are not visible-drawn to the scene).

But Planar reflection creates another camera according to real cam position and reflective object's postion, then redraws the scene (so it is slower than SSPR). but it is perfect, draws everything- behind other objects, not visible items etc

Please google a litlle for much more detailed explanation.

 

Yeah that works same as the URP one but for only standard pipeline!

 

Well, I see.
By the way, I have some other questions.
1. "URP Screen Space Pixel Reflection Shader" says it does not support VR. Why?
2. For "Legacy Mirror Shaders and Post Effects", Does the package include the models shown in the videos? I mean the planes, such as floor, ground, water, mirror and so on.
3. "Legacy Mirror Shaders and Post Effects" vs "URP & LWRP Mirror Shaders", which one has better performance? And the FPS is?

 

1. Because VR needs other setups (custom code, custom shader instructions etc). I could not investigate them yet It is not related to my other shaders (cause they use another aproach).
2. Not made a performance test (probably latest URP should be faster). And it depends on your mirror settings. If you open everything (Full reflection, full MSAA, HDR etc.) it takes the same time as the main render (main camera). Cause as i said it draws the scene again with another camera.

 

Do your car shaders have that fake but fast to render reflections on car material ,like in csr ?

 

It says in the asset description that this is supported in VR for Oculus Quest - does anyone know if it can run at 72 FPS on the Quest 1? Tested out several other shaders on the store claiming to run on Quest but then can barely run 30 fps which is not at all usable for VR. I am looking for a good solution that can be used for water surfaces (like in a lake or pond). Thanks ahead of time for anyone with info!

 

Sorry but no. As i know they just creates very big cubemap for whole environment and then they rotate them in shader according to car position etc.
My rotatable probe shader does a similar job but i am not sure if that can give similar results. If you provide me similar environment, i can test it (But it is not a car shader but based on URP's lit shader, please consider that).

 

It depends on what you want to reflect, your assets, draw calls etc. But it is quite difficult to say that should work. usualy very good mirror (perfect reflection) takes nearly same time as the main render (so not a good choise if you have heavy assets).

 

HI,
For the package you used built-in render pipeline,
1. Does it contain all the codes in the package, such as those shaders, or some cs code files?
the contents are same as you list in https://assetstore.unity.com/packag...mirror-shaders-and-post-effects-81728#content

2. I installed your android demo apk, and found there're some wave/ripple effect, will these shader codes also contain in the purchased package($35) ?

3. In the $35 package, will it contain some tile floor/wooden floor model?

 

Hi,
1. Yes it is all code (no dll etc.)
2. Yes but ripple may not work on low end mobile devices.
3. I do not provide models or textures in the package. Just some simple items to visualize the samples.

 

Check with you again, and I will purchase the package using standard render pipeline.
All upper yes, is for the the package using standard render pipeline?

 

No as i said i do not provide textures or models. only 1 and 2 is yes

 

Does this support Quest 2 ?

 

Hi, i do not have quest2 but buyers using it on quest2. Only problem is (they say); if you use "widest" IPD
( you can check the IPD explanation here: https://support.oculus.com/351344152731317/ )
it creates a distracted textures (not sync). But the "narrowest" and "middle" IPD works great. Please consider that.

 

Thank you for fast reply!
Is there anything you could do to fix it in the future ?

 

I am not sure what can be the problem. VR is very hard to test and correct for me and it is a little difficult to get those high end devices in my country But when i receive a one of course i will try my best to correct it. But please be aware of that problem and the resolve date is unknown

 

Hi, @AkilliMum
Does your reflection shader work on the Camera or on the plane which is used to reflect the objects?

 

Shader is attached to material on the mirror object (floor plane for this example). But mirror script runs on camera (attached to it). Script creates the reflection (render textures) and sends it to material (to object)

 

Follow your reference "https://docs.google.com/document/d/...SHlA0TTA3qsLBSiHM/edit#heading=h.6i9vkp3yswfd", there is no reflection in my AR Project. How do you set in your AR project?
P.S. I use the untiy arcore package. What package do you use? ARCore or ARFoundation?

 

Hi, did you try the sample app (github) there? Does not that work (Ar Foundation i suppose)?
https://docs.google.com/document/d/...4SHlA0TTA3qsLBSiHM/edit#heading=h.jbkg4decudq

 

I bought the standard rendering pipeline version, not the URP&LWRP. So do you have ar sample with the standard rendering pipeline version?

 

I will try to create a sample as sson as possible. I will use the latest version of unity and ar foundation. But if you follow the doc and create a scene within unity (as normal game play and create transparent floor etc) then publishing to AR should work just fine. But of course there may be some tricks and settings etc.
Do you have a special case for your game? For example my sample uses a reflective floor as a sample (as seen on the previos videos)!

 

Well, now I am trying to show the effects as your demo video. The reflect effect will be changed by the plane type(maybe it will be mirror / floor/ water and so on...).
----------------------------------------------------------------------------------------------
Reflection effect works on my Unity AR Project now! Thanks a lot!
BTW, in your demo video the reflection effect changes from light to dark when you drag the "Reflection Transparency" slider during 1'13" to 1'15". Are there any parameters to adjust?
Q1: The reflection disappears from top to bottom. How to adjust?
Q2: The reflection strength which makes the effect change from light to dark can be adjust by Intensity in Camera Shade. Am I right?
Q3: And in 1'42", it seems that you do nothing. But the reflection is suddenly full dark, then the reflection effect can only change from light to dark but can not disappear from top to bottom, why?

 

Hi There,

I'm using Unity 2020.3.2 URP 10.4.0, Building to Quest2 on Vulcan, Oculus XR plugin on Multiview and package 3.32 of the mirror shaders.

Both in editor with Link and on device I'm experiencing the same issue in the mirror reflection where the mirrored image lags behind. Feels like Asynchronous Spacewarp is not used on the reflection or like the rendering of the reflection camera is just a tad to late (lateUpdate vs Update type of thing).
Edit: If I hold my head still, and only move my hands or objects in the scene, everything looks synced. It's when rotating my head everything seems to follow along for a frame. Indicating that it's related to XR tracking.

Anyone else experiencing a similar issue?

Thanks!
Tom

 

Hi, did you read the bugs section? There is a Unity bug for XR in Unity after 2020.2.
https://issuetracker.unity3d.com/is...ender-method-is-lagging-behind-when-using-urp
And it is a dark hole if they will solve it
I will try to move the script into a custom pass, but i am not sure if that will solve the issue cause it is again runs after or before the render events!

 

Hi, sorry for the delay. I have created an AR sample for the AR Foundation with standard shaders. Please email me for details.

 

Has this been updated to be compatible with SteamVR devices yet?

 

Users says it works fine on steam too. But i do not have steam devices to test. So please consider that.

 

The last responses from users I am seeing says it does not work with Vive. Are you saying that has been fixed?

 

Will look into the mails again. People write me via email rather than here. So please let me check.

 

For VR, I see SP instanced is supported, but does the mirror camera actually render in single-pass instanced or render the scene two more times for each eye (so multipass rendering) and then recomposited in the shader for use in SP instanced mode?

 

Yes it draws the scene for each eye whatever is the pass mode. So using more than one mirror may affect the play in a bad way. Must be used very careful.

 

@AkilliMum
I'm having a problem setting up mirrors in my scene. The demos, running in the same project, work absolutely fine -- so presumably the issue is something to do with my scene. I'm working in VR, testing from the editor. Here's a screenshot of what I see:



From this angle, the mirror in that medicine chest should just be reflecting the wall beside it. I am using the

Shader Graphs/AMMirrorTwoEyes

shader. I even copied the settings from the Mirror Manager in the

VR/Mirror Shader Graph

demo scene -- except that the "Up Vector" is set to "Blue Z_Negative" to match this quad's orientation.

Is there some bit of setup that I'm missing?

This project is on Unity 2020.3.19 with URP 10.6.0
I'm using a Quest 2, connected via Oculus Link.

 

Hi @Barliesque , it shows the reflection so the script is working. But there must be something wrong with the "Up Vector" or the "Culling". Please try it on game view as "Standalone" mode (as you do with single eye shaders) just to verfiy the UpVector and "culling" is not on the way After that switch to "TwoEyes" and "VR" mode. That would be easy to see the if any error happens before switching to VR If they do not work, please write me via "akillimum@gmail.com". We will solve it together for sure

 

Working in Unity3D 2020.3 with URP, the depth cutoff stops working if the camera's near plane is not 0.3, trying to figure out what I'm doing wrong..?

Also, I'm getting a crazy amount of messages "camera manager create mirror camera called..." in the editor.

(Forgot to mention, I'm using the ARFoundation).

 

Hi, If you change the near plane, the cutoff on the shader side (material) should be modifed too, cause it uses near plane internally Please try that.
And second error should disappear with version 4.04 please download that (should be online in a couple of hours).

 

Hi AkilliMum

Does this asset work on consoles? Xbox One, Xbox Series, Ps4, Ps5, Nintendo Switch?
Thank you

 

Hi, it is based on URP so it should. But i have no console to test it

 

Darn.... ok. Hard to make a purchase decision

 

Hello, I'm seeing a bug when I use overlay cameras. It works perfectly without the overlay, but when I add one or more overlay cameras to the stack on the main camera it starts acting up. It shows the scene like the camera is in the wrong position, it looks like if might be rendering from a camera that is behind the mirror looking towards the mirror.

 

Hi just someone said the same thing and we have solved that a couple of days ago. But i must be honest i forget to update. I will send the update right away. Sorry for the trouble.

EDIT: Just released 4.06 which solves the problem

 

Working perfectly now! Thanks so much!

 

Hi @AkilliMum,
Nice job u have done. Thank you
Does ( Depth Blur ) feather working in ( MAC OR IOS ) ? in my case not working.
Using : Unity- 2021.2.17f1
and URP & LWRP Mirror Shaders v4.06

 

Thanks @dreamerz_lab but new 4.06 above 2021.2 does not implement yet depth blur. But old shader is there too. Is not "Scenes_OldCameraShade -> DepthBlur" scene working? Did you tried that parameters? Because params can be changed according to the scene. If the scene objects big-small etc.
Edit: also you should not use it on mobile. It is very heavy

 

@AkilliMum,Thank you so much for quick reply and confirmation. Yes everything is working fine in windows, but we need to support for MAC and IOS.
I hope we will get updates soon...........

 

@dreamerz_lab Actually i prepared that package on mac first, than moved to windows. Will look into mac again, i broke something maybe on windows for mac But as i said IOS could not run depth-blur. Please use simple-depth instead.