Search found 23 matches
- Wed Feb 24, 2021 8:03 pm
- Forum: User Support
- Topic: Lux measurement using Irradiance feature
- Replies: 31
- Views: 31903
Re: Lux measurement using Irradiance feature
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/src/slg/core/sphericalfunction/photometricdataies.cpp#L252 The read valu...
- Fri Mar 08, 2019 12:03 pm
- Forum: User Support
- Topic: Lux measurement using Irradiance feature
- Replies: 31
- Views: 31903
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/...
- Thu Mar 07, 2019 3:15 pm
- Forum: User Support
- Topic: Lux measurement using Irradiance feature
- Replies: 31
- Views: 31903
Re: Lux measurement using Irradiance feature
Both irradiance AOV and RGB_IMAGEPIPELINE are the product of the same process so disabling the second AOV will have no tangible benefits. Thanks for the previous hint! I further tested Irradiance AOV and its output (produced light intensity patterns a.k.a. "false color plots") correspond ...
- Sat Mar 02, 2019 9:12 am
- Forum: User Support
- Topic: Understanding .ies parameters, efficacy
- Replies: 19
- Views: 9996
Re: Understanding .ies parameters, efficacy
Thanks for the explanation @lightning_freak, @Sharlybg and @Dade , now it's much more clear to me! So, as in my job I have illumination design for the interiors, I can follow it creating some IES lamps according to the light fixture requested and using some realistic camera settings, at the end, the...
- Tue Feb 26, 2019 2:37 pm
- Forum: User Support
- Topic: Understanding .ies parameters, efficacy
- Replies: 19
- Views: 9996
Understanding .ies parameters, efficacy
Hi! I'm using .ies file as a point light, and I would like to understand parameters related to .ies files available in Blender more in depth, especially the definition of Efficacy. In my experiements I'm using Irradiance AOV. As it's poined out in the LuxCore's docs (redirects to Wikipedia), the eff...
- Tue Feb 19, 2019 10:27 am
- Forum: User Support
- Topic: Lux measurement using Irradiance feature
- Replies: 31
- Views: 31903
Re: Lux measurement using Irradiance feature
It is a lot easier to start from the C++ code and leave the OpenCL code as next step. The CPU code is here: https://github.com/LuxCoreRender/LuxCore/blob/master/src/slg/engines/pathtracer.cpp Just looks for "irradiance" and you will find the 2 places (direct light + indirect light) where ...
- Thu Feb 07, 2019 12:36 pm
- Forum: User Support
- Topic: Lux measurement using Irradiance feature
- Replies: 31
- Views: 31903
Re: Lux measurement using Irradiance feature
It is a lot easier to start from the C++ code and leave the OpenCL code as next step. The CPU code is here: https://github.com/LuxCoreRender/LuxCore/blob/master/src/slg/engines/pathtracer.cpp Just looks for "irradiance" and you will find the 2 places (direct light + indirect light) where ...
- Wed Feb 06, 2019 3:34 pm
- Forum: User Support
- Topic: Dumping all scene parameters + all objects from BlendLuxCore and use them in LuxCore
- Replies: 2
- Views: 2254
Re: Dumping all scene parameters + all objects from BlendLuxCore and use them in LuxCore
Thank you, that's great
- Wed Feb 06, 2019 3:10 pm
- Forum: User Support
- Topic: Dumping all scene parameters + all objects from BlendLuxCore and use them in LuxCore
- Replies: 2
- Views: 2254
Dumping all scene parameters + all objects from BlendLuxCore and use them in LuxCore
Hi, I would like to dump all the necessary variables and scene objects from BlendLuxCore to recreate the same scene directly in LuxCore (I want to develop only C++ part but prototype scenes/camera positions inside Blender). I would need to automatically generate .cfg and .scn files with all necessar...
- Wed Feb 06, 2019 7:11 am
- Forum: User Support
- Topic: Lux measurement using Irradiance feature
- Replies: 31
- Views: 31903
Re: Lux measurement using Irradiance feature
Yes, for instance irradiance on a probe is just: Average(<upper half pixel value> * Dot(<probe normal>, <pixel hemispherical direction>) / PI) Thank you for your reply! I would like to discuss another idea I was thining about recently, but I'm not sure if it's attainable. 1. Would it be possible to...