PMC dispersion bolts test

Forums: PMC dispersion bolts test
Display your final art here...
Forum rules
Important notice: All artwork submitted on our public gallery forums gallery forums may or may not be used by OTOY for publication on our website gallery.
If you do not want us to publish your art, please mention it in your post clearly. (put a very red small diagonal cross in the top left corner of the image)
Any images already published on the gallery will be removed if the original author asks us to do so.
We recommend placing your credits on the images so you benefit from the exposure too, and use a minimum image width of 1200 pixels, and pathtracing or PMC. Thanks for your attention, The OctaneRender Team.


For new users: this forum is moderated. Your first post will appear only after it has been reviewed by a moderator, so it will not show up immediately.

This is necessary to avoid this forum being flooded by spam.

PMC dispersion bolts test

Postby radiance » Tue Jun 07, 2011 1:04 am

radiance Tue Jun 07, 2011 1:04 am
Hi all,

Here's a little test render with the new pmc kernel in 2.47+,
using dispersion on the glass bolts. (scene is by dave62, it's in our new testsuite)
It's raw output from octane, no post-proc.
The cauchy B parameter for dispersion is too high though, 0.1, it's not something any realistic materials would have, I just wanted to see as much dispersion as possible.

Radiance
Attachments
disp_nuts.jpg
Win 7 x64 & ubuntu | 2x GTX480 | Quad 2.66GHz | 8GB
User avatar
radiance
 
Posts: 7633
Joined: Wed Oct 21, 2009 2:33 pm

Re: PMC dispersion bolts test

Postby DayVids » Tue Jun 07, 2011 1:32 am

DayVids Tue Jun 07, 2011 1:32 am
Good lookin, how much is the render time affected (if at all) by this?
CPU - i7-950 3.06 Ghz, 24GB Ram, Win7 x64, 2 display monitors, GeForce GTX 580 3GB Classified. I'm glad to say I LOVE OCTANE!
DayVids
Licensed Customer
Licensed Customer
 
Posts: 350
Joined: Tue May 11, 2010 2:35 am

Re: PMC dispersion bolts test

Postby funk » Tue Jun 07, 2011 2:40 am

funk Tue Jun 07, 2011 2:40 am
That looks great man.

What sort of render times should we expect once you've optimised it? Will it be faster than path tracing?
Win10 Pro/ Ryzen 5950X / 128GB / RTX 4090 / MODO
"I am the resurrection, and the life: he that believeth in me, though he were dead, yet shall he live" - Jesus Christ
User avatar
funk
Licensed Customer
Licensed Customer
 
Posts: 1204
Joined: Mon Feb 07, 2011 1:24 pm
Location: Australia

Re: PMC dispersion bolts test

Postby hadouken » Tue Jun 07, 2011 4:34 am

hadouken Tue Jun 07, 2011 4:34 am
that looks really clean.
Intel Core i5-2500
6GB DDR3
GTX470
Windows7 Home Premium 64-bit

http://zaixxiaz.com/
hadouken
Licensed Customer
Licensed Customer
 
Posts: 103
Joined: Thu Jul 01, 2010 10:56 pm

Re: PMC dispersion bolts test

Postby radiance » Tue Jun 07, 2011 7:44 am

radiance Tue Jun 07, 2011 7:44 am
I left it running overnight, and in the morning it was finished at 16000/16000.
I don't know when it was done though, and forgot to check... (should have taken a screenshot too... :( )
It looked pretty clean after on hour though, i'm sure 2 hours would have been more than enough, and I used one GTX460 GPU.

We're still working on optimizing the PMC kernel, at this time it's difficult to predict, but I'm hoping we can get 2x speedup after the optimizations are finished,
in a few weeks with the big beta 2.5 release.
Bidirectional pathtracing (and PMC) should make renders like this one converge MUCH faster,
and bidirectional pathtracing + PMC is something we will be starting work on next, after 2.5 is out.
PMC + bidirectional will be ideal, it will be as efficient as the popular standard in CPU based unbiased engines (MLT+bidir),
and this combines with the power of GPUs should really take things to a new level.

Radiance
Win 7 x64 & ubuntu | 2x GTX480 | Quad 2.66GHz | 8GB
User avatar
radiance
 
Posts: 7633
Joined: Wed Oct 21, 2009 2:33 pm

Re: PMC dispersion bolts test

Postby Jaberwocky » Tue Jun 07, 2011 8:39 am

Jaberwocky Tue Jun 07, 2011 8:39 am
radiance wrote:I left it running overnight, and in the morning it was finished at 16000/16000.
I don't know when it was done though, and forgot to check... (should have taken a screenshot too... :( )
It looked pretty clean after on hour though, i'm sure 2 hours would have been more than enough, and I used one GTX460 GPU.

We're still working on optimizing the PMC kernel, at this time it's difficult to predict, but I'm hoping we can get 2x speedup after the optimizations are finished,
in a few weeks with the big beta 2.5 release.
Bidirectional pathtracing (and PMC) should make renders like this one converge MUCH faster,
and bidirectional pathtracing + PMC is something we will be starting work on next, after 2.5 is out.
PMC + bidirectional will be ideal, it will be as efficient as the popular standard in CPU based unbiased engines (MLT+bidir),
and this combines with the power of GPUs should really take things to a new level.

Radiance



That sounds great.......More speed.......I love speed........

Careful radiance...don't feed the zombies. :lol: ;)
CPU:-AMD 1055T 6 core, Motherboard:-Gigabyte 990FXA-UD3 AM3+, Gigabyte GTX 460-1GB, RAM:-8GB Kingston hyper X Genesis DDR3 1600Mhz D/Ch, Hard Disk:-500GB samsung F3 , OS:-Win7 64bit
User avatar
Jaberwocky
Licensed Customer
Licensed Customer
 
Posts: 976
Joined: Tue Sep 07, 2010 3:03 pm

Re: PMC dispersion bolts test

Postby radiant » Tue Jun 07, 2011 10:21 am

radiant Tue Jun 07, 2011 10:21 am
radiance wrote:Bidirectional pathtracing (and PMC) should make renders like this one converge MUCH faster,
Radiance


So is bidirectional path tracing like an add on or a modified version of path tracing?
What is the difference between the two?
Win8 Pro 64bit ULT|Intel Core i7 3930K|3.20 GHz|32 GB RAM|GTX 590|UD5 2011 socket||2x TB HD||Master Cooler HAF X||Blender 2.6||Maya 2012||Octane|
User avatar
radiant
Licensed Customer
Licensed Customer
 
Posts: 699
Joined: Mon Apr 05, 2010 12:00 pm
Location: Adelaide, Australia

Re: PMC dispersion bolts test

Postby tchoa » Tue Jun 07, 2011 11:38 am

tchoa Tue Jun 07, 2011 11:38 am
That is very promising!
Cheers :)
F
Win XP x64 | Q6600 2.40GHz | 8Go | GTX470 1.28Go // Win 7 x64 | I7 Q740 1.73Ghz | 6Go | GTX460m 1.5Go
tchoa
Licensed Customer
Licensed Customer
 
Posts: 189
Joined: Thu Jul 01, 2010 12:33 pm
Location: Montpellier

Re: PMC dispersion bolts test

Postby radiance » Tue Jun 07, 2011 12:21 pm

radiance Tue Jun 07, 2011 12:21 pm
radiant wrote:
radiance wrote:Bidirectional pathtracing (and PMC) should make renders like this one converge MUCH faster,
Radiance


So is bidirectional path tracing like an add on or a modified version of path tracing?
What is the difference between the two?


It's a more complex algorithm, it's also unbiased, produces the same result (if implemented properly),
but is more efficient for caustics and hidden lightsources, as it traces rays from lights and from the camera,
and interconnects them.

It's quite complex to implement, and requires a complete foundation, which we now have.
It can also be combined with PMC to make it even better.

Radiance
Win 7 x64 & ubuntu | 2x GTX480 | Quad 2.66GHz | 8GB
User avatar
radiance
 
Posts: 7633
Joined: Wed Oct 21, 2009 2:33 pm

Re: PMC dispersion bolts test

Postby tungee » Tue Jun 07, 2011 12:39 pm

tungee Tue Jun 07, 2011 12:39 pm
That sounds so good!
Q6600 || 4GB || 9800GT || 512MB || Vista Home || C4D 9.6 & Blender
User avatar
tungee
Licensed Customer
Licensed Customer
 
Posts: 176
Joined: Mon Jan 18, 2010 4:27 am
Location: Germany
Next

Return to M is for Metaverse Gallery


Who is online

Users browsing this forum: No registered users and 13 guests

Thu Mar 28, 2024 5:40 pm [ UTC ]