Official Water System for the High Definition Render Pipeline

How to use it?
I must upgrade Unity? (i have 2021.3.16f1)

 

Hi, is there any specific changelogs for the water system so we can seen when certain features get added, thanks!

 

Is there a way to disable rendering reflection probes on water?

I found a way to disable reflection probes rendering on water. I created a very small box volume around the camera and set screen space reflections ray miss and last bounce to sky. I guess water is rendered to a quad direct in front of the camera?

Edit: Ah, that just disabled ssr rendering reflection probes everywhere


Kind Regards

 

I have a question about this water system. I am building an open world game which has exterior locations divided into grids which are switched between near and LOD versions, depending on where the player is. One feature will be that each grid will have it's own water plane, and each plane can be at a different height compared to neighbouring grids.
My concern is when two or more adjacent grids have their water planes at the same height. To account for this, each water plane would need to be synchronised in some way such that waves would smoothly transition between planes without creating seams on the edge of each grid. Is this something that this water system supports or will support?

 

• SSR on/off for Transparent looks exactly the same on the water
• Even with a high blend distance (20 along Z) you can clearly see the transition

 

Yes this was actually the case! I now have screen space reflections on the water, but still, the water is way brighter where it is affected by the light probes.

 

Love your water system. Any chance we can get the option to set a uv offset, script based at runtime ? I would need that for my open world / origin reset based game. Thank you!

 

Heya, thank you for responding!

My procedural world is quite large, and to avoid exeeding floating point limits when I move around in the world I have to reset every single object back towards 0 within a certain threshold.

The environment shaders (like terrain, water, etc) naturally react to this origin reset as casual world movement and render based on the new world position, which is, in this case, undesired.

The solution for this problem is to set the negative origin reset value (e.g. +/- 1000 units) as position offset in each affected shader. (e.g. in my terrain shader via UV for all the heightmaps and textures). Maybe there is a better way to solve this, but it works quite well for me for now.

 

do you plan to add support for planar reflections or any type of reflections

 

@chap-unity Water feature seems to be broken in 2022.2.4, or some setting is causing this.
keeps giving this error:
"Compute shader (WaterLighting): Property (_CameraDepthTexture) at kernel index (1) is not set
UnityEngine.GUIUtility processEvent (int,intptr,bool&) "

Bug report with more info, video & project: IN-30670

 

@PutridEx wait 2022.4??

 

Yes, I just realized why this might be happening, I have reflection lighting multiplier set to 0 in indirect lighting controller.
I know this can mess up ocean visuals, but is it expected to not render at all, not sure, so I'll leave it for them to decide

edit: Oh.. I know what you mean now :-
fixed

 

There seems to be an issue with SSR algorithm PBR Accumulation & water system:

 

Quite the sneaky bug
I remember enabling render pass culling, I always do, and disabling decals for faster builds.
Reactions can happen where you never expect them

 

Well the thing is that ssr completely disappears on the water surface if set to accumulation (so no fallback is visible/falls back to reflection probes)

 

So, I noticed the feature highlight post for Unity 2023.1 beta mentions a Water Line – and the change log also mentions "improved water line detection" in a couple places, but I can not for the life of me figure out how to enable it or get it to work.

Am I missing something? I'm on Unity 2023.1.0b1 and I see all the other water-related features mentioned in that post (Water Deformer, Water Excluder, Foam Generator, etc) and they all work great, but I just do not see the water line.

Am I misunderstanding?

 

Is there any way to set the time of the water? Im making a multiplayer game so syncing the waves is important. Thanks for any answers

 

I thought of that, but I did set it up with underwater enabled and moved the camera up and down just to see, and all I saw was a harsh, sharp line that kind of just looks like the surface of the water clipping. Is that what the water line is supposed to be? I assumed it would look like a smooth, blurry line or something so the transition between above water and under water would be less harsh.

 

OH, I SEE!
Perfect, thank you so much for clarifying!

 

Thanks for the reply

Don't mean to rush, but is there any date on this? I'd love to use this for my school project due in April but if waves can't be synced anytime soon, we'll have to go back to our old shader. Again thanks!

Or, is there any way I can do it myself?

 

"retrieve this water line mask in the Shader Graph"
Which node provides this data? I see there are multiple under Utility/HDRP/Water but hard to tell without documentation

 

Hi! will we be getting water splashes for objects falling in water or bullets shooting into water by any chance? or maybe a vfx graph integration so the we could use vfx graph's as water splashes?

 

@chap-unity is the Deformer only a static deformer? any plan to add simulation/ accumulation to the deformer just like how foam generator work especially for the bow deformer?
Refraction seems to have limited distance, any way to remove the distance limit?


Also any news about exposing underwater ior refraction

 

Uhm ... The checkbox for useInfluenceVolumeAsProxyVolume is already unchecked in my setup.
While indeed the blending is better with having it disabled, the area affected by the Reflection Probe is clearly brighter. Currently I placed the probes in a way, that it looks like "shallow water" near the coast... but yeah....

 

i get that distance limit when setting the distant wind speed to 0

This is on new clean project

 

True, for pool and river seems fine. Only happened on Ocean, Lake Surface Type

 

Can I get some pointers on the "Water Mask"? I'm confused on how to setup a texture properly that suppresses the waves at shoreline. Can I get some more detail on this?

Thank you!

 

is water refraction depth doesn't get distorted by the water normal? there's a harsh line on the refraction.

Also what is this instanced quad? do we need to manually supply the instanced quad mesh?

 

it's fully underwater, Maximum distance are maxed.

 

Looks like targetPosition now targetPositionWS and startPosition now startPositionWS.
What about FindWaterSurfaceHeight? Is it unsupported and removed?

UPD: Ok, I found ProjectPointOnWaterSurface.