Search found 17 matches

by JuandeLara
Fri Nov 25, 2022 10:54 pm
Forum: User Support
Topic: Candles and flames
Replies: 1
Views: 1918

Candles and flames

Hi all, I am trying to set up a physically based candle on an environment. I have done this by creating and object, and applying a matte material. Then added an emission. When I add the lumen a candle is meant to emit (approx 12) I cannot see much effect on the environment. However if I blow up that...
by JuandeLara
Sun Oct 31, 2021 1:29 pm
Forum: User Support
Topic: Altering Sun Gain value - interior scene
Replies: 1
Views: 1491

Altering Sun Gain value - interior scene

Hi, I am working with some interior scenes, and have been working on setting up the renderer settings for a while. Now, I wanted to calibrate it with a real scenario. I chose to recreate my room in 3D and simulate the lighting coming through the window (real time vs. rendered). I realised the best r...
by JuandeLara
Wed Oct 06, 2021 6:26 am
Forum: User Support
Topic: Irradiance Contour
Replies: 4
Views: 2653

Re: Irradiance Contour

Great thank you Dade!
by JuandeLara
Tue Oct 05, 2021 8:13 am
Forum: User Support
Topic: Irradiance Contour
Replies: 4
Views: 2653

Re: Irradiance Contour

Thanks Dade, It does work, you are right, it just takes a lot of time. If I change the steps from 32 to say 128, does it mean I will get more of the contour lines? I mean at a shorter interval on the image? I am quite curious to understand which function is the one you used to obtain the scale as 17...
by JuandeLara
Mon Oct 04, 2021 12:50 pm
Forum: User Support
Topic: Irradiance Contour
Replies: 4
Views: 2653

Irradiance Contour

Hello all, I have been looking into trying to visually represent lux measurements on a Luxcore render. I understand from Dade, that one way to do it is with false colour setting, and trying to match each colour to the real-world values using a photometer. I think this could work, but I would need to...
by JuandeLara
Mon Oct 04, 2021 8:33 am
Forum: User Support
Topic: Physically based light measurement
Replies: 7
Views: 4935

Re: Physically based light measurement

Open the render layer properties and enable the Irradiance AOV. Hello people, I wondered if someone can help me with the attached file, and check why are my Irradiance Contour Lines not working / rendering? Thank you so much. File can also be found here: https://drive.google.com/file/d/1c19wEKKEyEu...
by JuandeLara
Wed Jun 09, 2021 3:52 pm
Forum: User Support
Topic: Sun properties - Gain problem
Replies: 3
Views: 1809

Re: Sun properties - Gain problem

Thanks people. So I did not have a camera. That might have been the issue. I placed one in scene, and now everything is black. I have been playing with the settings for a while and have not been able to fix the problem. Any idea?
by JuandeLara
Wed Jun 09, 2021 11:55 am
Forum: User Support
Topic: Sun properties - Gain problem
Replies: 3
Views: 1809

Sun properties - Gain problem

Hi all, quick question, silly one. I have just not touched Blender for months and I am being slow in catching up. I set up a scene with a light Sun and Luxcore. When I set the Gain to 1 it appears over exposed, as comapred to it if I set it at 0.00001. It looks fine this way. I checked the scale of ...
by JuandeLara
Fri Jan 01, 2021 11:17 am
Forum: User Support
Topic: Lux measurement using Irradiance feature
Replies: 31
Views: 31690

Re: Lux measurement using Irradiance feature

Dade, why are writing that IES file doesn't include any absolute value? In LuxCore, the values you list are not used. The code is a direct port of old LuxRender code. The parsing of lumen per lamp filed is here: https://github.com/LuxCoreRender/LuxCore/blob/577aea723aa439ee94b2545ddee8cc206cf18430/...
by JuandeLara
Thu Dec 17, 2020 4:37 pm
Forum: User Support
Topic: Bidir - Metropolis.
Replies: 4
Views: 2224

Re: Bidir - Metropolis.

Hi, yes, in general a higher path depth is better, just your example of 800 is very excessive for almost all realistic scenarios. Let me give you some example numbers: First off, you can find an example of a situation requiring >100 describes in the follwing thread: https://forums.luxcorerender.org...