Small Bathroom

[Lal-O]

Hi guys.
This is my latest work. Hope you like it . C&C Welcome.
Two version of the same project.

2 hrs each...Not sure if that is a "normal" time for a little project like that, but for me is toooo much ....Anyway...if someone wants to give a try to get lower rendering times then just feel free to ask for the model

[Pibuz]

Hi Lal-O!
About your rendering times...first of all: SPECIFICATIONS (of you machine)

Then, the usual tricks.
1. in this kind of scene, black environment
2. no perfect "whites" (no 255 255 255)
3. detach of at least 0.1mm the reflective surfaces between each other (eg. the glass panes from their metallic supports)

[Zom-B]

You can upload a pigs for me, and I'll take a look

[Lal-O]

Hi Lal-O!
About your rendering times...first of all: SPECIFICATIONS (of you machine)

Then, the usual tricks.
1. in this kind of scene, black environment
2. no perfect "whites" (no 255 255 255)
3. detach of at least 0.1mm the reflective surfaces between each other (eg. the glass panes from their metallic supports)

Hi Pibuz !

My Machine specs are :
Intel I7 5960X Xtreme Edition 3.5 Ghz
Nvidia Titan X 12 Gb VRAM
64 RAM

1)I didn't know that one
2) I always use a "white" texture when is about white walls ( they never are 255,255,255 ).
3)I didn't know that one either
4)OpenCL enabled (CPU on)

I'll upload the Skp File if you want to take a look to the model

The Skp LINK:
https://drive.google.com/drive/folders/ ... eV1P1bfIP5

Thx for the reply my friend, useful as always .

[Lal-O]

You can upload a pigs for me, and I'll take a look

Sure mate, no problem

The LINK:
https://drive.google.com/open?id=1ZBVf_ ... f1Wzphfp1m

Thank you for test it out !

[Zom-B]

hey Lal-O,

there are several issues in this scene you should take care of:

1) your plasterwhite0083_3_ostion MAterial is a texture with RGB values above 204. reduce these in a image editor to max 204 in any colour or reduce it by lowering the B value of the texture (b of 0.85 would reduce the Red in this image of max 241 to 204). Same is for your marble

2) your light emitters are not equaly powered! DoubleCheck your light layers, while layer 1 gets clear quite OK, layer 0 stays super noisy contributing a lot of noise to the whole image. Boost the Emission Sampling Multiplicator of that emitter to match noisyness of Layer 1.

emission_multi.PNG (5.6 KiB) Viewed 27563 times

3) set your emitters to pure black diffuse, then they'll only emit light and every ray they catch gets killed. this usually boosts rendering performance, depending on Emitter size.

4) disable sun+sky, you still have them active...

5) reduce your Muebles, Plastico blanco, sink, Blanco cristal front and all the others white value down to 204 in RGB

6) make your emitter in the covered ceiling WAY bigger. PT needs to conect this hidden emitter somehow with the camera, the bigger they are, the less noise you get.

7) if not really needed use uniform emitters instead of blackbody, they do render a little faster...


By aplying 1-5 this I could raise the samples/s on my 1080ti from 7,7M to 11M

7) your toilet Doors are made out of glass covering a doublesided thin naterial, thats quite complex stuff that causes some pain... is this intended? changing them to Phong raised my samples/s to 13,5M

8 ) an F-Stop of 2 seems quite high, max it out to 64 to prevent (even subtle) DOF blur and therefore longer rendertimes.


If you use Clamp Contribution then setting it to 1000 does nothing at all... try values of 50 or even 25 to kill unwanted FireFlies.

Give that scene a try on CPU PT+BiDir

[Pibuz]

You always learn something from master Zom-B

[Lal-O]

hey Lal-O,

there are several issues in this scene you should take care of:

1) your plasterwhite0083_3_ostion MAterial is a texture with RGB values above 204. reduce these in a image editor to max 204 in any colour or reduce it by lowering the B value of the texture (b of 0.85 would reduce the Red in this image of max 241 to 204). Same is for your marble

2) your light emitters are not equaly powered! DoubleCheck your light layers, while layer 1 gets clear quite OK, layer 0 stays super noisy contributing a lot of noise to the whole image. Boost the Emission Sampling Multiplicator of that emitter to match noisyness of Layer 1.

emission_multi.PNG

3) set your emitters to pure black diffuse, then they'll only emit light and every ray they catch gets killed. this usually boosts rendering performance, depending on Emitter size.

4) disable sun+sky, you still have them active...

5) reduce your Muebles, Plastico blanco, sink, Blanco cristal front and all the others white value down to 204 in RGB

6) make your emitter in the covered ceiling WAY bigger. PT needs to conect this hidden emitter somehow with the camera, the bigger they are, the less noise you get.

7) if not really needed use uniform emitters instead of blackbody, they do render a little faster...


By aplying 1-5 this I could raise the samples/s on my 1080ti from 7,7M to 11M

7) your toilet Doors are made out of glass covering a doublesided thin naterial, thats quite complex stuff that causes some pain... is this intended? changing them to Phong raised my samples/s to 13,5M

8 ) an F-Stop of 2 seems quite high, max it out to 64 to prevent (even subtle) DOF blur and therefore longer rendertimes.


If you use Clamp Contribution then setting it to 1000 does nothing at all... try values of 50 or even 25 to kill unwanted FireFlies.

Give that scene a try on CPU PT+BiDir

Damn... Well, I definitely did not know most of the information you gave. It seems i've made a lot mistakes
However, i've also learned so much with your post.Is really useful

All i have to say is THANK YOU SO MUCH by taking the time to review my model and for the most imporat thing ...for sharing your knowledge.

Thank you again

[Zom-B]

Hey guys, no problem for sharing my knowledge.
Not all tipps kick in hard, but they add up