Its not bruce force, its biased. So flickering can be an issue. To see it, we need a movie that predestines a scenario critical to flickering with biased renderers.
From: [email protected] [mailto:[email protected]] On Behalf Of Jason S Sent: Tuesday, April 02, 2013 23:21 To: [email protected] Subject: Re: Announcing Redshift - Biased GPU Renderer I agree that it makes it difficult to spot any flickering with a fast moving camera, but it was enough to see that if there was any, that it would be minimal if there was at any at all.. Especially that brute force was used.. meaning flickering should be a non-issue anyways no? We should actually be looking for noise in this case, and there doesn't seem to be too much of that either.. Would still like to see a slow moving shot with perhaps a moving sun, using the aproximation methods that is.. but 3min using brute force :o Thanks for that though! On 02/04/2013 5:06 PM, Sven Constable wrote: Appreciated! But the amount of mb and the rapid camera pan in that movie makes any flicker unnoticable even it was there ;) Could you render it without mb, just *slow* camera animation and moving lights so we can see possible flickering (or lack thereof)? Thanks man, sven From: [email protected] [mailto:[email protected]] On Behalf Of Octavian Ureche Sent: Tuesday, April 02, 2013 20:37 To: [email protected] Subject: Re: Announcing Redshift - Biased GPU Renderer Speaking of the wolf.... Was just getting ready to post it. So here it is: https://dl.dropbox.com/u/2109634/classroom_dof_moblur_animation_v02.mov A couple of notes on it though. It had around 3 min / frame (some frames i saw 2:40 min). The thing is, i'm using brute force for the primary rays, since i'm still trying to understand the engine, and it's the slowest approach of all. Also i doubled the rays since the still image to make sure it looks neat (someone mentioned noise for that one), so now it's 1024 rays. Another thing i did was to lower the screen radius to 8 on the IPC and raise the samples per pixel to 64. Kept a pretty low setting on the dof (128 samples), and put a higher sampling on the moblur (512). That's why, if you look frame by frame, you will see some noise in the dof. All in all, given that, with proper knowledge of the engine and a different primary ray approach like IC, one could surely take the rendertime down, i'm still impressed by a noiseless brute force solution that does dof and moblur in under 3 mins/frame. Oh, and i have a 3 year old gtx470 with 1 gb vram. And i just started using redshift yesterday :) Cheers, Octav On Tue, Apr 2, 2013 at 9:23 PM, Tim Leydecker <[email protected]> wrote: Hi Octavian, is an update/sequence render of the (animated) classroom scene available already? Would be really interesting how the DOF/MoB and GI play together with animation and how long it takes to get the results smooth across frames. Cheers, tim On 01.04.2013 23:37, Octavian Ureche wrote: 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 <[email protected]>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 <[email protected]>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 <[email protected]> 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: [email protected] Date: Mon, 1 Apr 2013 19:17:32 +0300 Subject: Re: Announcing Redshift - Biased GPU Renderer To: [email protected] 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. [image: Inline image 1] -- _________________________________________________ Len Krenzler - Creative Control Media Productions Phone: 780.463.3126 www.creativecontrol.ca - [email protected] -- Andreas Byström Weta Digital -- visual | stuff www.okto.ro
