CPU-based renderers can render scenes that fit into RAM, while GPU based ones
traditionally only have fast access to VRAM, which usually is not more than 2Gb
on most cards. Redshift have overcome this limitation, they do most of the
processing on the GPU and can still render scenes that need more RAM than what
fits into the cards VRAM ("Out of core" is becoming an increasingly popular
paradigm, it's been mentioned a lot in recent talks and papers from Nvidia too).
What I havent understood yet is in how far Redshifts lead in this area is based
on their own inovation and to what extent it is influenced by NVIDIA middleware
(it's CUDA only after all atm). The more of the latter might allow other
renderers to follow qickly.
Also, the whole memory bottle neck problem would not be one if GPUs had direct
access to CPU RAM.
Coincidentally, AMD is making the APUs for the new PS4 with exactly such
functionality (they even allow the GPU to directly access memory in the 386
adress space directly). It will be interesting to see what happens when such
Silicon becomes available to mainstream computing.
On 02.04.2013, at 01:01, Doeke Wartena <clankil...@gmail.com> wrote:
> in what way is it moreeffective?
>
>
> 2013/4/1 Octavian Ureche <okt...@gmail.com>
> yap,
>
> i have some time to kill tomorrow so i'll give it a go.
> see know how it turns out
>
>
>
> On Tue, Apr 2, 2013 at 12:29 AM, Andreas Bystrom <andreas.byst...@gmail.com>
> wrote:
> octavian, could you render a small animation with that exact setup? with say
> a camera move and some animated objects inside the room?
>
>
>
>
> On Tue, Apr 2, 2013 at 8:11 AM, Doeke Wartena <clankil...@gmail.com> wrote:
> Can someone tell me why so many renderers are CPU based? And what is the up
> and downside apart from speed.
>
>
> 2013/4/1 Len Krenzler <l...@creativecontrol.ca>
> It is a fantastic render engine. That grain can easily be removed by a
> little tweaking and not much more render time.
>
> - Len
>
> On 4/1/2013 12:49 PM, Andres Stephens wrote:
>> Wow, I got access to the Alpha, and I'm really digging it also! But I
>> haven't got a sample scene to benchmark yet. But I like what you've got
>> there, and great times!
>>
>> But.. are you happy with the grain in the image?
>>
>> Thanks for sharing the image. =)
>>
>> -Draise
>>
>>
>>
>> From: okt...@gmail.com
>> Date: Mon, 1 Apr 2013 19:17:32 +0300
>> Subject: Re: Announcing Redshift - Biased GPU Renderer
>> To: softimage@listproc.autodesk.com
>>
>> Crossposting and a little OT but i just had to share this.
>> Took some time today and finally fiddled a bit with redshift.
>> 1:41 mins on a gtx470 with the old classroom scene (10 min for material
>> setup, 1 hr to figure out the settings).
>> Dof and motionblur straight from the renderer.
>>
>> I really dig it so far.
>>
>> Cheers,
>> Octav
>>
>> PS.and i managed to finish the vray displacement test scene which i have to
>> cleanup and share later today.
>>
>>
>>
>>
>>
>> <mime-attachment.jpg>
>
>
> --
> _________________________________________________
>
> Len Krenzler - Creative Control Media Productions
>
> Phone: 780.463.3126
>
> www.creativecontrol.ca - l...@creativecontrol.ca
>
>
>
>
> --
> Andreas Byström
> Weta Digital
>
>
>
> --
> visual | stuff
> www.okto.ro
>
