Lux-an-open-source-physically-based-shading-framework

Also I can't make Post Processing Stack v2 compatible with Lux I've done everything you said in document step by step.

Maybe it's because Post Processing Stack v2 shaders are not in the PostProcessing/Resources/Shaders anymore?
I removed original ScreenSpaceReflection from PostProcessing/Shaders/Builtins folder then I add Lux ScreenSpaceReflection there and still not work.

 

This is how I changed PP Stack V2. The AO, I didn't see any problems with it, it seemed to work out of the box. But the SSR did need tweaking in ScreenSpaceReflections.hlsl:


You'll probably need to set the path to whatever you have for your project, this was custom for mine.


Change that section like pictured.


change those two sections, and finally, within the same function,


change that.

Since I'm messing with this today i'll take a look at Stochastic SSR too, if I can make it work, will post here later.

 

For Stochastic SSR, edit SSRLib.cginc like so:

(again you'll have to customize this path to your installation)


Expand these two helper functions like so. That's it!

 

Thank you a lot, just it looks too dark and weird now! can you please attack the modified code too? Maybe I did something wrong.

 

which modified code?

 

Both I mean Stochastic SSR, SSRLib.cginc and ScreenSpaceReflections.hlsl.

 

oh I get it, you want the code I modified. I was confused by 'attack', I think you mean 'attach' hah

For Post Processing Stack v2 (latest version from GitHub)
https://pastebin.com/RuZLWCEN

For Stocastic SSR (latest version from GitHub)
https://pastebin.com/51gYErPa

 

Hello.

I am very new to Lux. And I couldn't exactly justify using it. Please answer questions below so that I can understand more about it. The questions may not look new but I'd be glad if someone answers and help.
1) How is LUX any better than the new Unity shaders?
2) What LUX Pro does that LUX Free doesn't?
3) Can "Shader Graph" be used with LUX?
4) Can low-end mobile devices run a scene with LUX shaders smoothly?
5) Kindly ask If someone could compare an object with LUX and the new Unity shaders* side by side. This way we can figure out more about the two shader frameworks.

By "new Unity shaders", I mean the new shaders used in Unity 5.6, 2017.3 and newer.

 

hmm, unity 5.6. does not ship with any "new" shaders as well as 2017 does.
2018 brings the ld and hd rp and new shaders, but these are in "preview".
so let's talk about the standard shader here.

so compared to the standard shader lux offers features such as parallax occlusion mapping, mix mapping or dynamic weather. not to mention its lighting features.

compared to the hd rp i guess there is only dynamic weather left... apart from the fact that lux supports unity's "standard" deferred and forward render pipelines and therefor is "production ready" whereas the hd rp is in "preview".

nope.

i doubt. but what is lowfy?

Lux Plus does everything in deferred while Lux Personal falls back to forward when it comes to anisotropic, translucent or skin shading.

 

I'm using HBAO on its camera mode and it works good with Lux skin shader but after I assign Lux Plus Depth in the graphic section HBAO doesn't work correctly anymore. So what will I lose if not assign Lux Plus Depth in graphic section?


Also strongly I request for compatibility with SEGI.

 

i will look into this once there is some time...

 

I am having a problem with fresh install of latest Lux Plus 2.02d on 2017.4.3f1 (latest LTS).
Some shaders are outputting white or pink while others are working fine. Custom Shader/Reflection/DepthNormal is set to Lux Plus. Colorspace is Linear, Camera is HDR/Deferred.

 

Just tested fresh install, properly configured Lux Plus 2.02d into 2017.3.1f1 and same result. I cannot move to 2018.x or 5.x due to compatibility issues.

 

I use Lux Pro on 2017.4.3f1 without any issues or modifications. Not sure why you're seeing that.

Try selecting the shader files for the broken materials and right click, hit "Reimport". should either work or give you an error message as to why it won't compile.

It's also possible it's not the shaders at all, and there's just some textures missing from the material. Kind of hard to debug without more details.

 

I don't know why it won't work right... not all the shaders are broken.
Getting a lot of "cast not allowed" errors in the shaders that are not working.

 

i haven't seen this before. and it works fine for me.
have you tried a fresh install?

 

Yes. I've tried a fresh install (Nothing else but Lux Plus 2.02d) on both 2017.4.3f1 and 2017.3.1f1. And they both have the same broken shader in that scene. These are untouched scenes. The only things I've changed is setting up the Custom shaders, taking off AA and setting Linear Colorspace.

 

Tried out Lux Free from UAS (not from Github) and I have just 1 broken shader.

 

i will check this out.

 

Thanks!

 

Yeah now that I think about it, I'm still using 2.02c, I never installed 2.02d for 2017 since it mostly just added support for 2018.

 

For Science... I installed 2018.1.2f1 and tried Lux Plus 2.02d.... and boom... everything works perfectly....



Could we have a fix for 2017.x ? I can't really move to 2018 yet... although I think it's great that Lux Plus is now future proof...

 

There are 2 new features which I am interested in.... and ATG support is the main reason I bought Lux Plus.... I already had Uber but I really want ATG/AFS to work well... and incorporating Lux seemed to be the best way to do it.

Lux Plus Version 2.02d

# Basic support for Unity 2018 added.
# Fixed skin and anisotropic shading on Metal and OpenGLCore in Unity 2018.
# Skin wrinkle maps shader added.
# Support for Advanced Terrain Grass lighting added.

 

Yeah I know. I don't have ATG so it wasn't of use to me and the skin wrinkle maps, while nice, are far outside my budget. I can't afford to have someone sculpt a dozen expressions to make maps. (per character at that heh)

 

i found the bug: my way to differentiate between the unity versions could only handle 5.x and 2018, not 2017.
so in 2017 the compiler choosed the 2018's path...

you can easily fix this by editing the "LuxStructs.cginc" file.
find line 99:
#if UNITY_VERSION < 2018
and change it to:
#if UNITY_VERSION < 201810
then reimport the buggy shaders.

and update will come to the asset store soon.

 

Worked! Like a boss! Thanks for the quick fix @larsbertram1

 

About SEGI actually everything works nice with Lux skin except reflections! even if I disable SEGI reflection still there is some weird reflection on the skin.

Everything else from SEGI works normally with Lux. Only reflection problem.

 

Yes, you'd have to modify SEGI's shader similarly to how I modified the SSR shaders. Anything that makes reflections needs to get the normal and specular data through LUX's shader include.

 

Modifying SEGI's shader for someone like me that doesn't know anything about shaders is impossible.

Anyway I think PostProcessing Stack v2 still doesn't work correctly with Lux skin.
Please look at below pic. I'm pretty sure that weird reflection stain isn't because of lighting! cause there is no light except a directional light.

 

ssr does not work out of the box. you will have to tweak it.

 

ceebee almost fixed that but there still some weird stains but a lot more less than default script.

I think also SEGI has the same problem as ssr because all parameters works normally except reflections. even if you disable reflection from segi there is still weird uniform reflection on the skin caused by segi.

 

So i'm trying to add wind to use this as a vegetation shader. Can anyone point me in the right direction? I saw the waving shader in the folder but i'm unsure as to how to apply this?

 

that is a simple grass shader for the terrain. in case you want bending you will have to write your own wind and bending function or buy afs or atg which both play nicely with lux

 

My game going to release soon, SEGI support please I doubt if that a hard job to do because the only problem of SEGI and Lux is reflection problem, bad I'm too noob to fix it.

 

as far as i remember it uses forward rendering and a custom lighting function.

 

I have a primary specular map and a smoothness map that I need to use but seems Lux skin shader only supports a smoothness map! Where should I put my specular map?

ceebeee
It seems you're an expert at shader matters. Can you please take a look at SEGI to figure out why SEGI have reflection problem with Lux Skin shader?

 

Skin has a fixed specular given by the skin pss map.

 

correct.

 

I can take a look, no promises. I thought SEGI was a paid package, but I see it's released open source now. Will have to check it out.

 

I took a look, I don't really see anything wrong. I installed the latest SEGI, then installed LUX, set up it's replacement sahders. SEGI looks identical. I put in a cube with Lux's Standard shader, made it shiny, it looks ok.



reflecting the water on the left, the grass on the right and the stones on the top, nothing looks bad.

 

Thanks alot. Lux skin shader looks purple when SEGI is on (no cascade version).
Thelebaron, had same issue.

Even when you turn off SEGI reflection still in dark rooms reflections looks so bad and wrong. Like below pic.


And when SEGI is off.

 

ok yeah I didn't look at the skin. I'll give it another look.

 

Ok, I got it to work with SEGI, partially. The one aspect I can't figure out is SEGIs reflection setting. as you can see with Reflection on, it's has a hard chrome look on the shadowy side of the head.



The head on the left is the Lux Skin Standard Lighting shader, and on the right is the LUX full feature Skin shader.

if you turn off that Reflection setting, it looks a lot better:


But you notice it's a bit dark stil, I found this is due to the sky color settings. if you tweak up the soft sunlight a bit, you get perfection:


So I don't have a clue what is causing the harsh reflection, it may be in the compute side of things, or simply something I overlooked.

You can get the modified SEGI.shader here: https://pastebin.com/0pT5hNhH
As always you'll probably have to change the path to the Include to match your project.

 

An update, I found a way to get Lux to work *with* reflections enabled:


you can see the blue rock and cube are reflective, but the skin looks fine.

However, to do this, I had to modify part of Lux.

in LuxUtilsDeferred.cginc, change these lines in GetLuxSpecular.
Before:


After:

(you're basically copy/pasting the two lines right below exactly as they are.) With that change everything works.

So I'm not sure if that's a bug in Lux or just some quirky thing SEGI requires.

 

Cool job man! Thank you a lot.

 

Your shaders are useless. It becomes magenta, when I reimporting it becomes OK, but on click od model it becoming magenta again, and again, and so on...

 

@larsbertram1 Hello I have a question is there option to add On/Off option of emmision to lux shader plus cause I understand than black = no emmission but unity don understand that and In Light Explorer, in static emmisives tab, and I cant turn it off cause it thinks that black is still emmisive. Second question is about lux plus and unity 2018.3 integration, will it work?

 

Is Unity 2018.2.10 supported in the paid version? The free version is not compiling anymore.

 

haven't looked into the free version for a while, sorry. Lux Plus runs well.

 

I use Lux Plus on 2018.2.16, and it works fine. But it's no different than the free really, as far as code structure. Free should be working as well. You may have to manually upgrade some parts of the code, that's just par for the course with unity.