V-Ray 2.0: VRayBPTracer

[anchovy]

I was surprised I didnt get any fireflies on this version with the Progressive Path Tracer.


The WinOSI room came out nice and clean as well. I just wish there was a good way to deal with the anti aliasing around the light source. Besides clamping is there anything that can be done?



here I just need a few more samples

[vlado]

I was surprised I didnt get any fireflies on this version with the Progressive Path Tracer.

You would need to enable reflective and refractive GI caustics with more bounces than the default. Also, the scene looks different, so it's hard to compare. Eventually the bidirectional tracer will clear them too.

Besides clamping is there anything that can be done?

Yes, do what happens in real-life cameras - add a bloom effect to spill the light into the adjacent pixels.

Best regards,
Vlado

[Javadevil]

Looks cool, but what's with the black attachment?

They are caustics seen through glass, so that's somewhat normal. The next major version of V-Ray will deal with this.

Best regards,
Vlado

Will there be another release before the next major release ? with VrayBPTracer ?

cheers

[vlado]

There should be one more service pack in the autumn; hopefully it will have some improvements in the bidirectional tracer.

Best regards,
Vlado

[Dariusz Makowski (Dadal)]

Side question is Vray 3.0 being released next year?

[sandykoufax]

I was surprised I didnt get any fireflies on this version with the Progressive Path Tracer.
[ATTACH=CONFIG]10288[/ATTACH]

Impressive. How many hours took to render this?

[Delineate]

BDpathTracer, sorry to sound so noob, but what's the science behind this and how's it differ from what's being used now?

[Javadevil]

There should be one more service pack in the autumn; hopefully it will have some improvements in the bidirectional tracer.

Best regards,
Vlado

This is Good news, any chance of it using the Intels Embree code ? its damn fast.

[vlado]

This is Good news, any chance of it using the Intels Embree code ? its damn fast.

Yes, we already did some experiments with that and in fact I am just about to put on the forum a plugin that replaces the default V-Ray raycaster with the Embree one. It depends on the scene but it may give anywhere from 10% to 30% reduction of render time.

Best regards,
Vlado

[Javadevil]

Yes, we already did some experiments with that and in fact I am just about to put on the forum a plugin that replaces the default V-Ray raycaster with the Embree one. It depends on the scene but it may give anywhere from 10% to 30% reduction of render time.

Best regards,
Vlado

Whoa thats awesome, I've been testing another renderer that uses Embree and it really is faster.
So replacing the default raycaster, does that include all raycasting code ? vrayrt ? BDPT ? anything that shoots a ray ?

I'd like to see and option added to track by mouse where it doesn't have to wait for the entire pass before proceeding to the spot under the mouse.
So all the cpu focus can under the mouse, once the is released it can go back to sampling the rest of the image.

cheers

[Delineate]

Cool, let us know where you put it.

[vlado]

Whoa thats awesome, I've been testing another renderer that uses Embree and it really is faster.

That's in part because said renderer (if it is the one I'm thinking of) is also quite simple and would work fast with any half-decent raycaster.

So replacing the default raycaster, does that include all raycasting code ? vrayrt ? BDPT ? anything that shoots a ray ?

Only the production renderer and the bidirectional path tracer and only for static geometry (not displacement, proxies, fur or anything like that). Not for V-Ray RT though; our own code seems better in that case.

So all the cpu focus can under the mouse, once the is released it can go back to sampling the rest of the image.

It's planned to extend the render region functionality of V-Ray RT to work in this way, as a first step.

Best regards,
Vlado

[Javadevil]

That's in part because said renderer (if it is the one I'm thinking of) is also quite simple and would work fast with any half-decent raycaster.
Vlado

It's a slim featured renderer at the moment, but in saying that it has nearly everything needed for Arch Vis, proxy's, simple scattering, great all round material, just missing displacement at the moment.

Only the production renderer and the bidirectional path tracer and only for static geometry (not displacement, proxies, fur or anything like that). Not for V-Ray RT though; our own code seems better in that case.

Okay

It's planned to extend the render region functionality of V-Ray RT to work in this way, as a first step.

Best regards,
Vlado

Okay sounds good.

Is BPtracer usefull for scenes that need caustics and hard to light scenes/scenes with small light sources ? Like a room with small openings and only the sun lighting the scene ?

I tried rendering a pool scene with BPtracer to see if sun system could do pool caustics. I ended up with a black pool.
I can get Caustics to work with teapots, etc, objects with two sides, a thickness. Does BPtracer need a thickness to create caustics ??

[vlado]

It's a slim featured renderer at the moment, but in saying that it has nearly everything needed for Arch Vis, proxy's, simple scattering, great all round material, just missing displacement at the moment.

Hehe, that's how it starts, yes... After 10 years of user wishes for features and options, you get where we are now

Is BPtracer usefull for scenes that need caustics and hard to light scenes/scenes with small light sources ? Like a room with small openings and only the sun lighting the scene?

No. Regular render with portal lights is much better in this case.

I tried rendering a pool scene with BPtracer to see if sun system could do pool caustics. I ended up with a black pool.
I can get Caustics to work with teapots, etc, objects with two sides, a thickness. Does BPtracer need a thickness to create caustics ??

Caustics seen through glass or mirrors are difficult to compute in an unbiased way in any renderer; you'll need to give the material some refractive glossiness at the very least, but still it won't be better than regular path tracing in this case.

Best regards,
Vlado

[Amplified]

Yes, we already did some experiments with that and in fact I am just about to put on the forum a plugin that replaces the default V-Ray raycaster with the Embree one. It depends on the scene but it may give anywhere from 10% to 30% reduction of render time.

Best regards,
Vlado

Did a compile, and threw in the crown scene. Have to agree it seems pretty fast. Will the alternative V-Ray raycaster end up in the nightlies or as a seperate plug to try out?