Are we out of touch that much?

[gaara the nightmare]

Hi vlado ,

I'm using VRay GPU daily for production work, if you are interested, here is my take on what I really need for VRay GPU, organized by order of priority:
- Translucency material, like the amazing new version in VrayMtl in VRay 5.1 CPU
- Caustics (I know it's difficult to do, but my clients keep asking for renders with caustics and I always have to limit what I can do as my workstation is GPU focused)
- the basic Alpha you mentioned earlier in this topic
- a good implementation of thin film shader
- Parallax bump can be a very nice addition
- Vray Toon material (that would be nice, but not that important for me)

I know that all of this take a lot of time to code and develop, but when the first three points would be achieved I'll feel that VRay GPU is 100% production ready, for the kind of work I do.

Can't wait to see all these features happening !
And thanks for the work done for VRay 5.1, a lot's of good stuff.

[lorenzo_spinola]

it could be easier to know what it is not possible to be translated from cpu actually, so as people would stop asking for that.

In any case, after it was already mentioned, I'd like to add:
-round edges
-thin glass option

[gaara the nightmare]

it could be easier to know what it is not possible to be translated from cpu actually, so as people would stop asking for that.

In any case, after it was already mentioned, I'd like to add:
-round edges
-thin glass option

lorenzo_spinola , I don't know if you missed this feature but if you use the VRayEdgesTex map into the Bump slot of your material you can control the rounded edges. Is it what you needed ?

[fixeighted]

Also have to say that caustics and translucency both work with gpu

[lorenzo_spinola]

lorenzo_spinola , I don't know if you missed this feature but if you use the VRayEdgesTex map into the Bump slot of your material you can control the rounded edges. Is it what you needed ?

I actually tried, didn't work...than I checked on the docs and this is written: The Radius option of VRayEdgesTex is not yet available when the render engine is set to V-Ray GPU

I'll try again just in case

[gaara the nightmare]

lorenzo_spinola I attached a fast test of a box with the rounded edge in GPU. It seems to work and It's also working in VRay Next. However I just opened a topic about a bug that broke the rounded edge in GPU IPR mode. Let's see when it can be fixed.

fixeighted Translucensy don't seem to work in GPU mode, it is only acting as a normal fog. I made a fast test with a kind of chocolate, you can see a cpu and gpu version attached.
For Caustics, I don't see any Photon map or Progressive caustics option in the settings.

[fixeighted]

Yeah, just looking again at the translucency again (in another post also). I could have sworn it was working yesterday but clearly I was mixed up when testing another issue.
Does indeed just seem like regular fog.
With caustics, they are always calculated with gpu, so no settings needed, as it doesn't do the new progressive (or photon mapped) cpu version of them.

[lorenzo_spinola]

Yeah, just looking again at the translucency again (in another post also). I could have sworn it was working yesterday but clearly I was mixed up when testing another issue.
Does indeed just seem like regular fog.
With caustics, they are always calculated with gpu, so no settings needed, as it doesn't do the new progressive (or photon mapped) cpu version of them.

is it said officially somewhere?
because last time I asked here on forum(november or december on version 5) was said wasn't supported.
if so, it's great! and finally can try some fun stuff with phoenix fd.

[lorenzo_spinola]

lorenzo_spinola I attached a fast test of a box with the rounded edge in GPU. It seems to work and It's also working in VRay Next. However I just opened a topic about a bug that broke the rounded edge in GPU IPR mode. Let's see when it can be fixed.

fixeighted Translucensy don't seem to work in GPU mode, it is only acting as a normal fog. I made a fast test with a kind of chocolate, you can see a cpu and gpu version attached.
For Caustics, I don't see any Photon map or Progressive caustics option in the settings.

You are right, I had to stop and rerender...it didn't take the change in the IPR automatically.
Thanks

[fixeighted]

Semi-officially I guess, here https://forums.chaosgroup.com/forum/...-vray-material

Or did you mean caustics? They've been there for quite some time now Just remember to untick 'affect shadows' and they'll appear.

[lorenzo_spinola]

Or did you mean caustics? They've been there for quite some time now Just remember to untick 'affect shadows' and they'll appear.

Don't give me false hopes
I'm gonna try it soon

[flat]

I'm curious about how V-Ray can be faster with new architecture hardware like the Apple M1 that combines RISC and GPU.

[luisgamino2]

Hi fixeighted translucency doesnt work in vray for sketchup and rhino, the sss material just works on gpu with simple light ( full raytraced and refraction raytraced don't work on sss material), fruit and Wax like candle don't look correct with gpu, in vray gpu photon maped cáustics doesnt work, i know we have to be patience as vlado says it's dificult to code for vray gpu, i can wait for the next update, but don't left US alone... thanks

[fixeighted]

Yeah I updated when I realised my wires were crossed whilst testing stuff. It is unsupported on gpu, regardless of the platform used.
What you are seeing is only the fog functionality, so not SSS at all really

However, caustics do work, and very well; it's just they are not photon mapped, hence the lack of any options for the map size etc.
They are generated by default if 'affect shadows' is unchecked.

[sirio76]

I'm curious about how V-Ray can be faster with new architecture hardware like the Apple M1 that combines RISC and GPU.

Vray GPU can only run on CUDA/RTX and Nvidia hardware so it wont use M1 GPU at all. It doesn't matter if that's integrated in the SoC unless developers code the software to take advantage of the architecture. I have no hope for Vray GPU running on Metal but I do really hope CG will at least look in to denoising hardware acceleration, since the SoC integrate both GPU and a neural engine it should run quite fast as soon as more powerful systems will be released. As far as I know the M1 render reasonably fast on CPU considered is an entry level processor.