VRayScatterVolume on GPU

V-Ray V-Ray GPU Requests
1

Hi,
Are you still planning to make VRayScatterVolume works with GPU?

2

Yes, but it’s not in our immediate todo list. It will most probably be available by the end of the year

3

OK, thanks for the info. Can’t wait to try it !

4

The Alsurface material doesn’t use refractivity, and uses a single scatter. It is miles behind the quality/realism of scatter volume

5

Is there a new ETA for the GPU Volume-Scatter material?

6

Hi, any update on this?

7

Vlado said it should be fairly soon, that RandomWalk is now part of Vray’s material in the recent 5.1 update.. I cannot really wait :slight_smile:

8

finally lol, a small step towards feature parity!

9

Any updates on this?

10

Hello! @S_K_I

the new translucency modes in Vray 5 update 1, are based on RandomWalk. This has been implemented in Vray GPU recently in our internal builds. This update will be released very soon

Best,
Muhammed

11

@Muhammed_Hamed Bump, any update on support for VRayScatterVolume on GPUs? Thanks!

12

Hey Peter, could you please explain your use case?
I haven’t touched this material since the new translucency models(RandomWalk) were implemented in the V-Ray material

Best,
Muhammed

13

hey @Muhammed_Hamed , i have a bunch on shots where i`m rendering snow as volumes, with brute force gi and deep scattering. As you can imagine it`s quite heavy even for GPU with 10+ bounces. Also GPU have issues with multiple VDB at same time in scene, 4 max i think, then i will bug out. I was trying to replace it with meshes shaded with VrayScatterVolume, works perfectly. Unfortunately only on CPU, hence my request to add support for VrayScatterVolume on GPUs. Thanks!

14

Thanks Peter!

Instead of shading the snow meshes with VrayScatterVolume, did you try to use the new translucency built-in the V-Ray material? The volumetric mode should do the job, you will need to use SSS color + Refractivity
It uses RandomWalk SSS, just like VrayScatterVolume. About the VDB issue on GPU, I will test on my end. I don’t think we have capped this to 4

Best,
Muhammed

15

@Muhammed_Hamed , i tried , it`s not suitable for what i need, nor it gives the options for anisotropy of scattering, bouces and multiplier on the shader. Shading wise scatter gives me better results too. So back to to my original request, please add VrayScatterVolume support for GPU if possible, thanks! :slight_smile:

16

Thanks Peter,

Is there a chance I can have a look at your setup please? it will be helpful
For IPR or if you use BF/BF GI the number of BF bounces is the bounces parameter on VrayScatterVolume
About Phase Function, it is being implemented at the moment for Translucency. Then it matches the controls between VrayScatterVolume and Translucency

Best,
Muhammed