Japan taste

Post your tests, experiments and unfinished renderings here.
User avatar
Sharlybg
Donor
Posts: 2528
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Japan taste

Post by Sharlybg » Sat Mar 10, 2018 2:04 pm

Hi ! This is a real production project i am testing to benchmark Luxcore alpha on complexe indoor scene.I keep the resolution at 1k. The project is still unfinished with a lot furniture and asset to model. The render is currently running this is a quick capture.

Bidir == 16 + 16 deph

Device == i7 6700k

Time == current stage 11 hours and 44mn
japan.jpg
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA

User avatar
Sharlybg
Donor
Posts: 2528
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: Japan taste

Post by Sharlybg » Sat Mar 10, 2018 8:23 pm

Still running after a couple of time this is the update. This time it is stock render without post process :
I've also notice that glass lamp in the kitchen are to dark , it is not normal as i am in bidirectional at 16 + 16 deph plus glass2. I will check more.


Time == 18~hours
Bidir 17 hour.jpg
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA

Luximage
Posts: 73
Joined: Sun Jan 14, 2018 8:01 pm

Re: Japan taste

Post by Luximage » Sun Mar 11, 2018 9:13 am

Nice scene, i like the camera perspective, nice stairs also.

Asticles
Donor
Posts: 171
Joined: Thu Jan 11, 2018 8:52 am
Location: Barcelona, Spain
Contact:

Re: Japan taste

Post by Asticles » Sun Mar 11, 2018 7:03 pm

18 hours seems too much.

User avatar
Sharlybg
Donor
Posts: 2528
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: Japan taste

Post by Sharlybg » Mon Mar 12, 2018 9:59 am

Luximage wrote:
Sun Mar 11, 2018 9:13 am
Nice scene, i like the camera perspective, nice stairs also.
Thanks you !
Asticles wrote:
Sun Mar 11, 2018 7:03 pm
18 hours seems too much.
Yes tooooo much :shock:

After more analysis of the project i come with theses conclusion and result:

1) 90% of the lighting in this project come throught indirect light.So it is really hard to render .

solution: avoid sobol sampler and simple path tracing. Bidir is your friend
Solution: help the engine find a bit of direct light (i use spot light)

The current result :

Bidir 6hours 1K



r e n d e r

Mini Jap3.jpg

s i d e.......p l a n


plan.jpg
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA

Asticles
Donor
Posts: 171
Joined: Thu Jan 11, 2018 8:52 am
Location: Barcelona, Spain
Contact:

Re: Japan taste

Post by Asticles » Mon Mar 12, 2018 11:46 am

Great work. Yes, bidir eats all you throw to it :P

User avatar
B.Y.O.B.
Developer
Posts: 3912
Joined: Mon Dec 04, 2017 10:08 pm
Location: Germany
Contact:

Re: Japan taste

Post by B.Y.O.B. » Mon Mar 12, 2018 6:16 pm

Yes, the large amount of indirect light is probably responsible for the long render times.

I also notice that most materials are very bright.
You probably already know it, but make sure that a "white" material is never brighter than about 0.7-0.8, because if it's too bright there will be many long lightpaths that are not killed by russian roulette. At least from what I understand about this.
You can then brighten the image in the tonemapper settings, so a 0.7 grey will look white (this is how it works in reality, too).

User avatar
Sharlybg
Donor
Posts: 2528
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: Japan taste

Post by Sharlybg » Mon Mar 12, 2018 7:27 pm

B.Y.O.B. wrote:
Mon Mar 12, 2018 6:16 pm
Yes, the large amount of indirect light is probably responsible for the long render times.

I also notice that most materials are very bright.
You probably already know it, but make sure that a "white" material is never brighter than about 0.7-0.8, because if it's too bright there will be many long lightpaths that are not killed by russian roulette. At least from what I understand about this.
You can then brighten the image in the tonemapper settings, so a 0.7 grey will look white (this is how it works in reality, too).
Yes your are totally right there. Usually i never go above 0.8 for all my shader. But now i will try to set 0.7 as a limit.
Also i try to set my bidir engine deph to something in the range of 8 + 8 max.

I really like the way Bidir engine perform in this project when i think that it is CPU base. I can just only hope all upcoming improvement will impact this area of luxcore too.

If only AMD or INTEL could give us PCIe x16 CPU cards (not high price xeon phi). But something like Ryzen 1950x on dedicated card.
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA

User avatar
Dade
Developer
Posts: 4888
Joined: Mon Dec 04, 2017 8:36 pm
Location: Italy

Re: Japan taste

Post by Dade » Tue Mar 13, 2018 11:27 am

Sharlybg wrote:
Mon Mar 12, 2018 7:27 pm
If only AMD or INTEL could give us PCIe x16 CPU cards (not high price xeon phi). But something like Ryzen 1950x on dedicated card.
It is possible, not trough PCIe but through Ethernet. I mean, network rendering does what you are looking for, it is the old solution for CPU-only rendering: https://knowm.org/24-core-linux-cluster ... from-ikea/ (cheap case, cheap motherboard, no gpu, fastest CPU worth buying and a bit of ram)

The IKEA supercomputer was a (old) funny example of this kind of solution.
Support LuxCoreRender project with salts and bounties

User avatar
Sharlybg
Donor
Posts: 2528
Joined: Mon Dec 04, 2017 10:11 pm
Location: Ivory Coast

Re: Japan taste

Post by Sharlybg » Wed Mar 14, 2018 10:09 am

It is possible, not trough PCIe but through Ethernet. I mean, network rendering does what you are looking for, it is the old solution for CPU-only rendering: https://knowm.org/24-core-linux-cluster ... from-ikea/ (cheap case, cheap motherboard, no gpu, fastest CPU worth buying and a bit of ram)

The IKEA supercomputer was a (old) funny example of this kind of solution.
Don't really like such solution ! I always prefere to be as compact as possible this why in the past you see me working a lot on GPU. But now i'm really impressed by Your job on the BIDIRECTIONAL engine it is amazing I love it. Now I'm searching for A Threadripper 1950X or a nice R7 1800X. The R7 1800x is almost 2X times faster than the i7 6700k it an amazing CPU.

Update:

CPU ==> 6700k
RENDERTIME ==> 9hrs 30mn
POLYCOUNT ==> 2700k
RENDERMOD ==> Bidir
EDIT ==>gimp (color grading)
EFFECTS ==> none
RENDER SET ==> (deph 6)
RESOLUTION ==> 1296 X 1105


BIDI 9h30 mn render gmp.jpg
Support LuxCoreRender project with salts and bounties

Portfolio : https://www.behance.net/DRAVIA

Post Reply