[RELEASED] Lux Water

oh, sorry: i totally missed this one.
no, grid size should not be size of the chunks!
this most likely will break it and might be the source of all your pain.

grid size determines the steps in which the sliding volume will be moved according to the camera's position.
so lets assume that your chunk is 100x100m in size and subdivided into 10x10 quads. in this case the grid size would be 10. every 10 meters in world space you have a unique vertex.
so the sliding volume will follow the camera in 10x10m steps. which ensures that the sliding volume will be repositioned using these 10m steps and vertices of the volume fall exactly on top of vertices of the surface.
this is needed by the tessellator to create the same results for the water surface and the underwater mask.

 

i am glad you solved it!

 

Hello, I just bought your asset and I am trying to make it compatible with Overcloud by following the instructions in this link. But the clouds are still invisible when the water is behind the clouds. Have I done something wrong or is that compatibility out of date?

 

you have to also follow the instructions for transparent materials (in the overcloud docs).

 

Do you mean section 4.2? "Adding OverCloud support to a transparent shader"?
If so, I wouldn't know how to modify your shader to make it compatible. Sorry, I have no idea about shaders, so I need your help in more detail.

 

all i can give: it the very end of the LuxWater_Core.cginc you have to tweak the alpha:

float alpha = CloudAttenuation(surfaceEyeDepth, i.grabUV.xy, 1);
then the return has to look like this:
return half4(c.rgb, alpha);

 

Thanks for the help.
You mean this, right?

Code (CSharp):

1.     // Smooth water edges
2.     c.rgb = lerp(OrigRefraction, c.rgb, edgeBlendFactor);
3.     float alpha = CloudAttenuation(surfaceEyeDepth, i.grabUV.xy, 1);
4.  
5.     // c.rgb = i.color.rgb;
6.     // c.rgb = test;
7.  
8.     return half4(c.rgb, alpha);

Unfortunately nothing changed, still the same.

I'm using the plane "OceanPlane_500x500" from the demo scene "11 LuxWater Ocean Demo". And the Unity version is 2018.3.7f1, to add more information.

 

hmm, it just works for me?!

 

I have created a clean project. I just added Overcloud and Lux Water and I have added Overcloud to "11 LuxWater Ocean Demo". I have followed the steps of the link and the last thing you told me but it remains the same:


If I do the optional step to add cloud shadows to the water the shadows work but the clouds are still transparent.


Another thing, the link says that I add the changes to the #endif of line 1231, but in that line there is no endif because the shader will have changed since the last time that page was updated.
I added it on line 1227 and it looked like this:

Code (CSharp):

1.     //  -----------------------------------------------------------------------
2.     //  Diffuse lighting at the surface = foam
3.         #if defined (GEOM_TYPE_BRANCH_DETAIL)
4.             // As it is just foam here, we skip DisneyDiffuse and use Lambert (NdotL) – roughly +3%
5.             half diffuseTerm =
6.                 #if defined(DISNEYDIFFUSE)
7.                     DisneyDiffuse(nv, nl, lh, perceptualRoughness) * nl;
8.                 #else
9.                     nl;
10.                 #endif
11.             half3 diffuseLighting = Foam.rgb * (
12.                 #if defined (UNITY_PASS_FORWARDBASE)
13.                     gi.indirect.diffuse +
14.                 #endif
15.                 lightColor * diffuseTerm
16.             );
17. // here it gets translighting twice...
18. // diffuseLighting += lightScattering * Foam.rgb * _FoamTranslucencyIntensity;
19.  
20.             UNITY_BRANCH
21.             if(backside) {
22.             //  Add underwater fog
23.                 diffuseLighting = lerp(diffuseLighting, diffuseUnderwaterLighting, FogDensity) ;
24.             //  Apply absorption
25.                 diffuseLighting *= ColorAbsorption;
26.             }
27.         //  Blend between water and foam
28.             Refraction = lerp(Refraction, diffuseLighting, Foam.a);
29.         #elif defined(FOG_OVERCLOUD)
30.         if (!backside) {
31.             #if defined (UNITY_PASS_FORWARDBASE)
32.                 OVERCLOUD_FRAGMENT_FULL(c, i.grabUV.xy / i.grabUV.w, worldPos)
33.                 OVERCLOUD_OCEAN_BASE(c, i.grabUV.xy / i.grabUV.w, worldPos)
34.             #elif defined (UNITY_PASS_FORWARDADD)
35.                 OVERCLOUD_FRAGMENT_FULL_ADD(c, worldPos)
36.                 OVERCLOUD_OCEAN_ADD(c, i.grabUV.xy / i.grabUV.w, worldPos)
37.             #endif
38.         }
39.         #endif
40.  
41.     //  -----------------------------------------------------------------------

I don't know, maybe I'm doing something wrong and I don't know what it is.

 

your 2nd snipped looks odd. the overcloud code i way too high up in the code.
fog is added at the very bottom where you find azure, aura and enviro fog integration.

the transparent stuff ( CloudAttenuation() ) comes at the very end - like you showed earlier.
i am not familiar with overcloud, maybe you have to enable the needed cloud depth textures somewhere. so you could reach out for felix. he should know best

 

I have thought that you could share your modified version that works, and I test it. Or even the scene as well.

I asked Fewes if he could help us. I'm waiting for his answer.

Thanks again for the help.

 

pm send with tweaked shader code.

 

I purchased your asset and enjoy the effect and how the code is set up. The one problem I am having is underwater fog density. It way too thick and I haven't found a way to adjust the density. What is the advised way to adjust the underwater increase underwater visibility?

I can barely even see the character the camera is attached to.

 

it is a combination of underwater fog and color absorption.
here the link to the chapter in the documentation: https://docs.google.com/document/d/...m38h-u3Az-ozaaOX0/edit#heading=h.thm2k7ru0z0b

 

Hi. Could you tell me haw to fix that bug? It's hapen when i use fish shader to animate their swimming. It's looks like the water behind object is not render. Thanks

 

looks like a bug with the fish shader: it seems to not properly render into the depth buffer.
so most likely the vertex animation is not applied in the shadow caster pass of the fish shader.
nothing i can help with then.

 

Thanks

 

I have a question about oculus. The water looks and runs great until I look down or move. I get what looks like all the level geo is inverted and invisible. Is there a setting to fix this??
I am using the muddy water volume and forward rendering with the depth script.

 

Any plans for HDRP in 2021?

 

nothing i would count on...

 

And what about urp do you think it is achievable? I would like to combine lux essentials and lux water in urp. Thanks

 

which features would you need in urp?

 

Fingers crossed for 2022 then I'm stuck in hdrp now for better or for worse, and lux water is the only thing I really miss. I have a visceral reaction to it that I haven't found in any other water shader yet. e.g. this demo which is beautiful but always makes me feel a bit sick lol

 

I wanted to use Lux Waters.
However, on installation I found that Lux waters adds 18 new shaders which tips the total global shader count 256+ in unity. I had to uninstall it again.
At present its not usable. I cannot remove other projects.
I also Have R.A.M which adds only 2 shaders but its very heavy on the editor.

Any tips on reducing shader count from Lux Waters ?
Thanks in advance for your replies.

 

Hi
Thank you for this great asset.
Do Lux Water support edge wave blending? Similiar to edge blending, but including gerstner waves. This would be great to smooth the waves on terrain.
Thanks in advance.

 

I'm getting this error while trying to make a build for Oculus Quest (Android):
Shader error in 'Hidden/Lux Water/UnderWaterPost': undeclared identifier 'sampler_CameraDepthTexture' at line 144 (on gles3)

Compiling Vertex program with STEREO_MULTIVIEW_ON
Platform defines: UNITY_NO_DXT5nm UNITY_NO_RGBM UNITY_ENABLE_REFLECTION_BUFFERS UNITY_FRAMEBUFFER_FETCH_AVAILABLE UNITY_NO_CUBEMAP_ARRAY UNITY_NO_SCREENSPACE_SHADOWS UNITY_PBS_USE_BRDF2 SHADER_API_MOBILE UNITY_HARDWARE_TIER2 UNITY_LIGHTMAP_DLDR_ENCODING

This is the line of code:
float sceneDepth = Linear01Depth(SAMPLE_DEPTH_TEXTURE(_CameraDepthTexture, i.uv));

Anybody have any idea how to fix this?

EDIT:
Nevermind! Solution is here: https://answers.unity.com/questions/1529224/opengles3-fails-to-compile-shaders-hiddenpost-fx-f.html

For LuxWater specifically, open LuxWater_UnderWaterPost.shader
replace this line: sampler2D _CameraDepthTexture;
with this line: UNITY_DECLARE_DEPTH_TEXTURE(_CameraDepthTexture);

@larsbertram1 If I'm not the only one getting this error, perhaps you could add a conditional compiler flag for Android/Oculus Quest builds?

 

This is the best looking water shader I've found that works in VR, minus the reflections of course.

I've recently moved to the new Unity XR system for VR use, and for OpenVR you have choices for either multi-pass rendering, or single-pass instanced. I have been unable to get Lux Water to work with single-pass instanced and get the error:

"Shader error in 'Lux Water/WaterSurface': invalid subscript 'instanceID' 'UnitySetupInstanceID': no matching 1 parameter function at Assets/LuxWater/Shaders/Includes/LuxWater_Core.cginc(276) (on d3d11)"

Is there any way around this? I'm going to try multi-pass in my project, but I'm concerned about any performance drop.

I'm using Unity 2019.4.17f1, SteamVR 2.7.1 (OpenVR), Lux Water and Enviro.

Many thanks;

Graeme

 

The gerstner waves seems to be the most visible missing spot. thanks

 

In the end I've reverted to the previous depreciated XR system, and it just works. Lux Water, Enviro, VR, single pass rendering ... apart from a few visual glitches within Enviro, it's all good. The issues I was having are due to a Unity bug logged since August.

This is still the best looking water shader I've found for VR. If it could deal with reflections in VR, it would be perfect.

Graeme

 

anyone have any idea or tips to make this water look toony / stylized .. maybe even just a little bit stylized?
it is the best looking water ive seen, moreso, i like the underwater effect, its the best ive tried,
but i like toony or stylized aesthetic
thank you

 

Could you please tell me why my water can't record 360 video normally? After recording, the state is like this

 

Water is visible in the Scene view, but not in the Game view. I have checked the Deferred shader, Culling Mask, Rendering Path, Clipping Planes, etc. What more should I check?

 

Hey folks,

Bit confused as to the current situation around shadows. Documentation mentions options for them under Planar Reflections but those options don't seem to be exposed any more.

To have an option to enable shadow receiving would be awesome. Noticed a post a couple years back mentioning this needs to be sampled per pixel per cascade and is expensive, is this why its not an option any more?

 

I have also just come across the issue of needing shadows to be cast on the water. I'm rendering from directly above the water and when the water is not perfectly clear it needs a shadow cast on it. Is this possible?

 

How to get exactly water surface height (Y) in a location (X,Y) ?
I try to use LuxWater_SetToGerstnerHeight.cs, but it doesn't set object on the watersurface.
What parameters can let object put on watersurface exactly? or how to program do that?
I need your help. Thanks.

 

Great shaders, but it dissapears in VR! I have it at level and as soon as i move the headset it disappears and I cannot find a setting where it does not move with the eyesight.

 

I had this same problem, but I am pretty sure the author doesn't respond to this thread anymore. But I could be wrong about that. It might be just the vr questions that go unanswered.

 

Unless they correct me otherwise, no VR is not supported. In older posts on this thread, responses were made with regards to VR issues. However last I checked any VR post was simply replied with a "VR not supported" post. This is a real shame as this is the best water shader I have found for VR, and it works really well with the exception of underwater or any of the camera effects (water drops on screen etc). It could be *the* go-to VR water shader.

That said... I'm not having issues with the above surface view of the water personally. I'm using 2019.4.19f1.

Graeme

 

Hello, I am trying to make an underwater lab with windows, so I am basically looking for the effect of water behind the glass. Imagine something like this:
I think that for me it would be enough if the water looked like this (as I could use it in the window).

I
But in 10 LuxWater Water Volume Deep Water Demo, if I am not directly under water, it looks like this:

Underwater effects are not applied. Is there a way to tweak this?

Thank you for your time!

 

Hi, I'd like to modify the parameter Normal/Speed Global Factor by script. How do I do it?

 

Ok I managed to find out that we have to modify the color named _BumpSpeed and the global factor is the alpha. But when we change it gradually, it jags. It's not smooth. Is it possible to modify this smoothly?

 

Can you elaborate a little? I tried different things with these and managed to move the bump with _FinalBumpSpeed23 but as soon as I stop to change the value, the bump stops.

 

@larsbertram1
Hi,

I am trying to use LuxWater for my VR unity 2020.1.17f1 Built-in RP Windows MultiPass project, above the surface I have no problems, everything works, below the surface the only thing that does not work is the caustics only for right eye vision, when the camera approaches or moves away from a surface the caustics move destroying the stereoscopic vision, I tried for hours to modify LuxWater_UnderWaterPost but without success, does anyone know how I can solve?

Edit: SOLVED!!!

CalculateFrustumCorners and Lux_CameraWS for both eyes

 

Found a bug in the FOG btw, its not reading the Unity settings at all! To fix it add this:

#pragma multi_compile_fog

To 'LuxWater CG.shader'. I added it around line 263

 

Hello, I am interested in buying this asset while its on sale. (and even when its not)

as I have been watching it for awhile and deciding on using it VS crest

I need a water asset for ocean water, but I want to replace the shader to use more styles of graphics/art, is that possible?

also, I am only interested in an asset for water to make giant waves to combine with https://assetstore.unity.com/packages/tools/physics/dynamic-water-physics-2-147990

does your asset allow users to make any kind of waves? like super talls ones?

i understand that crest and SUIMONO also offer solutions similar to yours, but I am wanting to know if yours faces any hard limits

 

How do i remove the reflection of the direction light used as the sun, i have a cloudy sky with no sun but still the sun(direction light) is in the reflection, i have tried placing the sun on a layer and ecluding it but it still shows?

 

@larsbertram1 Are there a possibility to move the sun around in real-time and get the lights projected correctly? I tried moving the light but it just stays at one static position. I tried the infinite ocean, by the way, Your help on this little issue of mine is greatly appreciated.
Thank you.

 

Hi @Monil , Looks like I'm stuck on the same boat. I can see that you've managed to find a solution.
I'm not sure what those that you've mentioned refers too though
"CalculateFrustumCorners and Lux_CameraWS for both eyes"

Can you share a little bit more on what you have to do?

Thank you

 

Hi @larsbertram1, I have a question about LuxWater, how can I activate shadows on the water surface?

 

Im getting this errors on Android Opengl 3 on unity
Shader error in 'Lux Water/WaterSurface': 'UnitySetupInstanceID': no matching 1 parameter function at Assets/LuxWater/Shaders/Includes/LuxWater_Core.cginc(259) (on d3d11)

anyone got it to fix?