Before and after

[vlado]

Does this improvement go into 2.40 (maya&3dsMax)?

There's not much time to test it properly for the 2.4 version... but we'll see.

Best regards,
Vlado

[paulDryzen]

Phew and I thought that it was just a simple trick with some special settings in the DMC/BSP of VRay.

I will check out the new nightly builds soon.

Paul

[Morbid Angel]

Vlado does this improvement affect shave and haircut hair rendering?

[vlado]

Vlado does this improvement affect shave and haircut hair rendering?

No, but I sent the shader changes to Joe; it is up to him to integrate them.

Best regards,
Vlado

[Dariusz Makowski (Dadal)]

K I'm in the dark. So what is it that the render drop by 80%?

Its pretty great result!

[The_Distiller]

That's some serious optimization right there, btw is there an ETA for the 2.4 release?

Regards, Christian

[vlado]

That's some serious optimization right there, btw is there an ETA for the 2.4 release?

It was supposed to be released already But there remain two important bugs that we want to fix for that release, so hopefully very soon.

Best regards,
Vlado

[DPGrafik]

When can we expect this build in an OSX nightly build? the are far and few between

[Reaversword]

Amazing optimization. Done 5 times faster!. Brilliant.

[evanerichards]

Sooo, this thread seems a bit cryptic.
From what I am reading, you made some tweaks to the vraymaterialhair3 shader that sped up the render time by about 5x? And that is available in the latest nightly build as of yesterday?

[joconnell]

Is this a speed up purely with the hair shader or a more general optimization with transparency? As in would this benefit things like leaves / thin surfaces with semi transparent pixels?

[alainfx]

When you open the 2 "before" and "after" pictures, and switch between the two, you see the difference (the "grain" is different).
Is it behaving diffently in animation ?
If it does not add too much moving noise, this will be terrific !

[pechart]

Ah, I know! You slowed down the rendering on the shader intentionally in the past, just to remove the bad code now to look good!

[vlado]

From what I am reading, you made some tweaks to the vraymaterialhair3 shader that sped up the render time by about 5x? And that is available in the latest nightly build as of yesterday?

Both are correct, yes.

Is this a speed up purely with the hair shader or a more general optimization with transparency? As in would this benefit things like leaves / thin surfaces with semi transparent pixels?

For the moment, this is only for the hair shader. It can be done for the regular VRayMtl material as well (or at least, we can put an option for it). It might help with leaves and other tiny transparent stuff, but it might add too much noise for larger transparent surfaces. The hair needs good AA settings anyway, so it makes sense to use the extra AA samples.

When you open the 2 "before" and "after" pictures, and switch between the two, you see the difference (the "grain" is different). Is it behaving diffently in animation? If it does not add too much moving noise, this will be terrific!

The optimization adds a little noise, but from my tests, the extra noise is negligible, especially compared to the boost in render times.

Best regards,
Vlado

[Morbid Angel]

Man, I have fur project coming up...I wish I could use this .....