Official Adaptive Probe Volumes (APVs) experimental release for HDRP in 2021.2

oh i manage to clean those ringing issue by increase the dilation actually.

Disabling Dilation and Offset bring back the ringing issue

 

I try change bias, but it still leaking.
And this leaking in dark room:

 

@francescoc_unity I notice there's lot of improvement on APV commit, are those going to 21.2 or 22.1?
Also since you mention that the state blending are in master already any chance we can get a sample scenes for it? would like to know how the workflow and required scripts for state blending

 

Room outside is lighted. Oh, bias settings in Volume is default, later i try change it.

 

I take it that sample are not compatible with 22.1 or at least the current beta release?

 

This is quite handy. Will something like this come for reflection probes as well?

 

What would be the appropriate settings in Lighting / Scene tab and on Mesh Renderer to only use APV and no lightmaps for static geometry?

 

For our heavily procedurally stitched room system in our game we had to decouple the old LightProbes system from the Scene and save the generated sh9 data for each probe in each room prefab. Once the level is generated the lightprobe data for each room is loaded back and stitched together in a new tetrahedral network we had to generate ourselves and that we custom feed to each dynamic object on the scene....

It was a nightmare to make and it's getting outdated by the minute T_T

Would you please add what I just described to this new system so we can use it for procedural games with the new SSGI? Please? I'm begging you...

 

Yeah i don't think it's compatible with 22.1 i'm having error on the script about ProbeReferenceVolume

 

Change bias setting dont help.

 

Hi,is there something could change the project default setting that could set renderers using APVs instead lightmaps?
i have to change every static prefab to receive lighting from lightprobes by hand.

 

Is 8GB GPU enough for baking with APV?

 

Dark areas appear when I bake with a progressive GPU. I am using 6900XT. Does this happen with Nvidia GPUs?

also denoise filters have no effect on APV.

 

@francescoc_unity any update on APV and terrain system?

 

How about the terrain receive apv?

 

Are there plans to incorporate illumination-driven placement of light probes?
See hyperlink for repo with Unity implementation.

I can imagine there being benefits to blending between different light probe positions in addition to blending between bakes.

 

So, I haven't tried this, but from the info here it seems like a direct replacement for the current light probe system, with the same limitations it currently has, with 2 major improvements:

1. A much easier workflow for placement and also hopefully more sophisticated placement (although from the screens I'm seeing, it's just a grid..? Which uhh, which isn't very sophisticated or efficient)
2. Dynamic probe lit objects will look a whole lot better.

Does this feel like a fair sum up? (As fair as it can be in 2 lines)

But,

Does this address in any form the long standing -and important for many users- issue of: light probe leaking through walls?

Or is the solution once again to just murder the scene with a ton of probes which will naturally minimize, but not solve, the issue?

 

Adaptive Probe Volumes is the new thing, it's time to slowly forget about the Light Probes.

 

And I will happily do that, unless of course the new system has most of the same shortcomings of the old system (which, from my admittedly shallow knowledge of APV, it seems like it does).

 

It's a grid probably so the GPU can interpolate the probes per pixel. Sampling from an arbitrary point cloud is quite more resource intensive (which is why the old probe system does it per object).

The only way to prevent light leaking with a grid-based probe system is to store visibility information along with the light information. The way people do it nowadays is to store a low resolution variance shadow map per probe. No idea if Unity is doing or planning that.

 

@francescoc_unity, would it be possible to combine APV with RTXGI ? It seems that AVP is more like a lighmass importance volume where each probe point determine how light is calculated.

 

Added light probe option for terrain?

 

This sounds really interesting.

May I suggest you include shots with probes of varying density in your marketing material and docs so that the "adaptiveness" of the probes is more prominent? All the shots I've seen that include APV look like this:


And this looks like more of a brute force placement algorithm than anything "adaptive" (brute force may have been appropriate for "Enemies", but shots like these do fill me with a bit of dread when I consider using the feature for games).

In any case, thanks for replying, I have a more positive outlook towards APV now.

 

If I remember correctly, it was shown during the GDC stream, which should be still watchable on the Unitytech twitch channel. Probes are more sparse in open space, and more dense near geometry.

 

But the terrain still using lightmap for the indirect lighting isn't?

 

Yea, if terrain could use APVs as indirect lighting source that would be great.
i guess the coming feature "Probe blending for time of day scenarios" you guys mentioned doesn't support lightmaps, right?
so if we want to do a time of day in a scene with terrain, this is a must have.

 

Exactly this, if the terrain still locked on lightmap the APV blend feature wouldn't work well if terrain are used in the scene

 

Ooh i see, gotcha. Thanks for the update

 

Does this feature provide specular GI?

 

@francescoc_unity In the current tech stream (at least in 2021.2.16) there is still a severe bug that the position of random GameObjects gets changed during baking; this only happens if I use Dilation Settings + Virtual Offset Settings. If I switch them off, all good.

 

Not sure what would be the best way to file the report, as I cannot share my project (due to legal and size issues).

 

@francescoc_unity I did some testing and am now able to narrow down the issue: It only happens with Rigidbodies, and should be easy to be reproduced for you: Just add an Rigidbody with gravity, and some mass, place the Gameobject somewhere above the ground, so it can fall. It seems that the dilation stuff is simulating physics during its calculations, and with this moving Rigidbodies. Pretty severe, as it can corrupt a scene easily without being noticed.

 

this sounds like a viable solution and should prevent the changes of GOs. Any chance this will also end up in 2021.2.x tech stream or LTS?