Official Water System for the High Definition Render Pipeline

The shore water deformers seem to be dedicated objects. Multiple ones. Even for the small island example scene there are 3 needed. Here's 1 of them:



Either an automatic placement or another solution would be preferred for a big island. Nobody wants to create and place that by hand.

Shore foam works fine, but it looks like plastic:



Where can I change that? And is it possible to give it more deformation? Currently it looks like a line.

All in all very impressive what you provide

 

Hence why i'm asking

 

Thanks, was just some unexposed settings. I'd prefer if you'd expose as many as possible

Before with the hard line towards the ocean:



After the tweaking:

 

Say, can we get repetition/tilling size parameter for the ripples? for me the current ripples looks to large , also for the Swell wave can we get parameter smaller than 250? i know that the current setup are locked for physical based setup, but at least let us choose though.
Also still waiting for unlocked IOR Settings

 

Purely aesthetic mostly, as you can see that the wave lacking of small waves detail (microwaves?). Basically i would like to get more smaller ripples details on the water.

and that make me wondering can we fetch the ripple normal maps data on shadergraph? that way we can blend additional smaller ripples?
For the underwater refraction even without ScreenSpaceRefraction i'm still getting windowing effect, i would like to remove that completely to be honest.

 

@chap-unity Sorry to bug you again but I really would like to see an option to provide an UV offset to your water shader (so floating point origin technique won't be obvious). Any chance we'll see that in the future ? Thank you

 

I'm looking to achieve this kind of under the water refraction looks

 

blending custom normal map work great, Thanks for the idea.
still waiting for the clean underwater refraction

 

SSR artefacts look like there is something broken. I don't know if this is a bug with SSR or an issue with the water system (I experience the same SSR artefacts in the latest 2023 beta version [2023.1.0b13])

 

Which artefacts?

 

The aliasing artefacts on the water reflections .

 

That's because i disable AA in my scene view

 

Thank you for your answer! I can achieve the desired result (= countering the origin reset movement) with the solution as shown below in my screenshot. However, after just a few units of movement the boundaries (water meshes disappear with camera movement) and the LOD system (water becomes very simple) seem to get messed up. Other than that it would be perfect.

I don't know what's happening under the hood but I guess it's out of reach for me ? Maybe I would need to apply the offset to the camera distance too somehow ?

 

Yes I am using the infinte ocean. Using the quad mesh at least eliminates the frustrum culling problem, but the degraded LOD is still present when applying the offset.

I am going with the floating origin approach because my procedural generated worlds are quite big (around 512x512 km). After passing a certain movement threshold, the avatar/camera is reset to zero and the whole world is moved along with it.

Of course that reset is a movement at the end and environment shaders like terrain, water, grass etc, which depend their rendering on their position/uv/heightmaps etc, have to counter that movement with an offset, else it would be obvious.

Here are a few screenshots:

Everything is ok at the beginning, no movement yet. The offset itself works fine when moving. (EDIT: Sorry but for what ever reason it won't show the first pic)

Spoiler

After a few units of movement, culling problems occur when using the offset

Spoiler

The further I go, the more the LOD gets degraded (at least I think it's the LOD)

Spoiler

I'd prefer using the infinte ocean mesh, but as I mentioned above, I could solve the culling problem with the quad mesh. The LOD (or what ever the problem is) is still an issue for me though. The caustics are fine in any case.

Thanks a lot!

 

is it possible to make this effect with unity water and raytracing? Tried recursive rendering without any luck

 

No, i meant how objects distorted below water surface and looks almost flat. I thought enabling Recursive Rendering will add physical raytraced refraction to the water to make such effect possible. The built-in underwater screen space refraction working only when camera below water plane. Volume system's screen space refraction doesn't do anything to the water.

 

Is that physically correct?! I have been in a lot of water and while object get distorted… maybe it’s because it’s in a game but it feels really weird. Generally you can still tell depth relatively accurate, but this one trips me up, when you dive the water turns much much deeper than what I would expect

 

Maybe IOR value in video is a bit bigger than real water IOR not sure, but it's roughly how it's should behave.

 

yes it is, although it looks a bit exaggerated on that video (i guess to make it more obvious) and i do not think that effect would be relevant on a game like half life 2

 

Yes

 

Why changing water smoothness doesn't change reflection? It's should be more blurry on surfaces with low smoothness. Example water with 0-1 smoothness range

And water with 0-0.5 smoothness

Notice how reflections looks exactly the same, the surface just more darker.
Edit: I think raymarched reflections works as they should be. Its just raytraced reflection doesn't change

 

Bug: while in playmode raymarched reflections stops working after switching from game view to scene view and back. 2023.2a12

 

Another question about the current water system,

• For the Mask System, for current and waves.
  in the glacier river system one map handle the entire scene, what's the workflow to handle big scene?
  because high chance one map wouldn't be enough
• How to handle/blend water body with different colors?
  let's say a river blending to a swamp which also connected to a clear water lake or ocean? the last part would also blend the current direction. And the same scenario as above let's say it's a big scene

 

Transparent objects in new water surface seem to get a BUG.
Does anyone have a good solution to this problem? Thank you~
Editor version ：2022.2.15f1c1

 

Waterline is broken and is applied if I am over water. Judging by my debugging, the issue is probably inside "IsUnderWater" HD Sample Buffer.

 

That's great news, thank you a lot!

 

The buggy waterline i was talking about is the blured line at the bottom just in case it was not clear .

 

My workaround at the moment is as follows:

1) I wrote a WaterlineTransition.cs script and attached it to the CustomPassVolume used for drawing the Waterline (I basically attached it to the Waterline GameObject) and assigned the Target Surface and Water Material
2) I added a Blend factor to the Waterline_FullScreenCustomPass shadergraph

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.Rendering.HighDefinition;
3.  
4. public class WaterlineTransition : MonoBehaviour
5. {
6.     [SerializeField] WaterSurface m_targetSurface = null;
7.     [SerializeField] Material m_waterMaterial = null;
8.     [SerializeField] float m_relativeUpVecOffsetLengthForBlending = -0.2f;
9.  
10.     // Internal search params
11.     WaterSearchParameters m_searchParameters = new WaterSearchParameters();
12.     WaterSearchResult m_searchResult = new WaterSearchResult();
13.  
14.     CustomPassVolume m_customPassVolume;
15.     Transform m_cameraTransform;
16.  
17.     void OnEnable()
18.     {
19.         m_customPassVolume = this.GetComponent<CustomPassVolume>();
20.         m_cameraTransform = m_customPassVolume.targetCamera.transform;
21.     }
22.  
23.     // Start is called before the first frame update
24.     void Start()
25.     {
26.        
27.     }
28.  
29.     // Update is called once per frame
30.     void Update()
31.     {
32.         if (m_targetSurface == null) return;
33.        
34.         // Build the search parameters
35.         m_searchParameters.startPositionWS = m_searchResult.candidateLocationWS;
36.         m_searchParameters.targetPositionWS = m_cameraTransform.position;
37.         m_searchParameters.error = 0.01f;
38.         m_searchParameters.maxIterations = 8;
39.  
40.         // Do the search
41.         if (m_targetSurface.ProjectPointOnWaterSurface(m_searchParameters, out m_searchResult))
42.         {
43.             float compareY = m_cameraTransform.position.y + m_relativeUpVecOffsetLengthForBlending;
44.  
45.             if (compareY < m_searchResult.projectedPositionWS.y)
46.             {
47.                 float blend = Mathf.Min((m_searchResult.projectedPositionWS.y - compareY) / Mathf.Abs(m_relativeUpVecOffsetLengthForBlending * 0.5f), 1);
48.                 m_waterMaterial.SetFloat("_Blend", blend);
49.                 m_customPassVolume.enabled = true;
50.             }
51.             else
52.             {
53.                 m_customPassVolume.enabled = false;
54.             }
55.         }
56.     }
57. }
58.  

It works and solves the waterline problem for now - however it's a dirty workaround.


Some more questions:

1) Wouldn't it make more sense to set the blending through the fade value from CustomPassVolume (right now this parameter has a private set therefore can't be assigned) instead of adding a custom Blend parameter to the shader graph? Would this even work as expected?

2) Accessing the material through the WaterSurface directly was not possible (using customMaterial parameter didnt work for me)

3) The script doesn't work for multiple waters, for example when having 1 infinite and 1 quad water on different waterlevels, it is not going to work. Is there a way to make this work using the current available scripts without the need of using custom trigger-colliders to correctly switch between water surfaces?

4) Will an option be added in the future with which we can have an optional animated and continued fullscreen distortion effect when the camera is underwater?

 

that is very nice! is there a way to blur underwater but based on distance? (i know nothing about shadergraph sorry if is a dumb question)

 

there's a new depth buffer that should fix that if i'm not mistaken
Edit : https://github.com/alelievr/HDRP-Custom-Passes/tree/master
ah you need custom pass

 

Any ETA when this might be released?

 

Just tried the new water with Unity 2022.2.20f1 and the waterline still seems to be a bit buggy? I know I haven't