[luis.hijarrubia]

Thank You for Your answer Luis. I was reffering to this:



Patrik

Didn't know on rhino was displayed like that. On studio / maxwell render is just GPU.

And this answer can be the response to caustics issues. GPU is a PT, like draft, not a BPT, like production. But we are supporting on GPU many things draft engine does not, like channels, or multilight in the future. But caustics, in general, will be better calculated on Production, but we could made this algorithm to make caustics work through dielectric that won't work on Production (but we have more options to make it work on Production on the future).

[burnin]

As you have showed in example and is also visible with Moet_Chandon scene (black bottle CPU vs transparent on GPU):
Reflective & refractive caustics do not show in mirrors and transparency doesn't have enough depth to represent physically accuracy. Limiting bounces, ray depth, having no available luminance clamping (fireflies removal)... while in same breath claiming your (factory default) settings to produce physical accurate results is far fetched.
Having a couple of invaluable settings exposed is not complex. Maybe a bit advanced at first, tho after just a couple of renderings user can easily become familiar with. Present inconsistencies (Production ~ Draft = Fire ~ GPU) in the engine are more confusing.
Can at least values (ray depth, bounces, clamping) be known, so one can model to the specs?

[numerobis]

(but we have more options to make it work on Production on the future).

Which future? Some near future like the coming v4 updates or some distant one maybe in v5 or 6? We had this statement about a new engine with working caustics already when we still were on v1...

[luis.hijarrubia]

Which future? Some near future like the coming v4 updates or some distant one maybe in v5 or 6? We had this statement about a new engine with working caustics already when we still were on v1...

Well, not short future. We are very focused on GPU engine right now. But now that we have the "caustic trough dielectric" on GPU is more pressure to have it on CPU, so I hope it's not going to be an always future thing.

[T0M0]

Luis could you tell us what has the highest priority regarding to GPU development ? Personally, I would like to see asap Additive mode, SSS and hair/grass extension.

[luis.hijarrubia]

Only counting the big ones (not bugs or little things like ghost material), now we are doing things to have better memory use. And if this works properly, could make multi-gpu sooner than we thought.

[Neil Evans]

Hi Luis

Are we likely to see multi light soon in GPU?

And it would be amazing if the direct caustic and indirect caustic tags worked...

Cheers

Neil

[luis.hijarrubia]

Hi Luis

Are we likely to see multi light soon in GPU?

And it would be amazing if the direct caustic and indirect caustic tags worked...

Cheers

Neil

Fast multilight on maxwell render works on GPU.

Tags to turn caustics off on GPU are high priority.

[Neil Evans]

Hi Luis

Excuse my ignorance but what is 'fast' multi light?

When I do a render from max with multi light selected I do not see any multi light options. Unlike in CPU where I see them and can adjust things.

Cheers

Neil

[luis.hijarrubia]

Sorry, my bad.

I was referening to fast multilight (that you can activate in maxwell render preferences) that makes light calculus on GPU when updating a light. But you are referring to GPU render having multilight.

That's going to be done for sure.

[Neil Evans]

Cool, thanks. Sorry for the confusion

[seghier]

i asked many times without answer !!

[Neil Evans]

What would be really nice is to be able to use my second GPU rather than the primary one. Not too fussed about using them both. Is there a way to do this now? It slows the heck out of my machine at present.

[cosoli]

Well, not short future. We are very focused on GPU engine right now. But now that we have the "caustic trough dielectric" on GPU is more pressure to have it on CPU, so I hope it's not going to be an always future thing.

So.....I Just bought a beta-product (you said that V4 would keep the same quality as CPU render before it released)

Give me a reason to upgrade to V4, if GPU render is unstable (http://www.maxwellrender.com/forum/view ... 40&t=44562)

In fact, I paid for Maxwell because I trusted the render quality even I already have Octane & Thea...................................

[Mihai]

What would be really nice is to be able to use my second GPU rather than the primary one. Not too fussed about using them both. Is there a way to do this now? It slows the heck out of my machine at present.

Right now no. But the roadmap shows multi GPU in the future.