Search found 187 matches

by CodeHD
Fri Jan 24, 2020 8:33 pm
Forum: User Support
Topic: Spectral rendering
Replies: 31
Views: 2057

Re: Spectral rendering

I should add, that does not mean its too difficult to achieve a benefit. I tend to say things too negatively :lol:
by CodeHD
Fri Jan 24, 2020 8:17 pm
Forum: User Support
Topic: Spectral rendering
Replies: 31
Views: 2057

Re: Spectral rendering

In terms of data, I think light sources are not a big problem. The thermal specturm of an incandescent light bulb is easily modelled, and typical spectra of LEDs or fluorescent lamps are readily available. Laser are also trivial, just make them one resolution element of the spectrum ;) Manufacturers...
by CodeHD
Sun Jan 12, 2020 11:50 am
Forum: User Support
Topic: Falloff texture
Replies: 6
Views: 314

Re: Falloff texture

PetrT wrote:
Sun Jan 12, 2020 11:13 am
may be the way of reusing Cycles node(Layer Weight) is exist-?
I was thinking of using the Fresnel node to mix two materials, which i recall from a while back.
But I just looked at it again, and the output type doesn't seem to match anything? Am I missing something?
by CodeHD
Sat Jan 11, 2020 8:16 pm
Forum: User Support
Topic: Magnifying lens not accurate
Replies: 2
Views: 195

Re: Magnifying lens not accurate

Luxcore is definitely capable of doing physically accurate optics. I've done a couple things with it by now. Just last week i roughly modelled a 3D-printed magnification 3 telescope that I made from some cheap lenses I have. I roughly modelled the lenses by looks to have a working model - and it all...
by CodeHD
Sun Dec 22, 2019 1:45 pm
Forum: User Support
Topic: Volumetric caustics in the wild
Replies: 4
Views: 478

Re: Volumetric caustics in the wild

I guess for the most part it isn't even faked, they just use massive render farms ;) This seems to be a recent blog post on the subject, featuring some extreme numbers: https://www.awsthinkbox.com/blogs/the-evolution-of-rendering e.g. about Lord of the Rings it says: However, that's nothing compared...
by CodeHD
Fri Aug 02, 2019 11:12 am
Forum: Development
Topic: Tiled OIDN Denoising
Replies: 78
Views: 12372

Re: Tiled OIDN Denoising

Some test images can be found here: https://owncloud.gwdg.de/index.php/s/mkgXCBpkoQF0Egz I only denoised the 16 sample image with OIDN v0.9 for comparison now. As I said before, the behaviour changed a bit, especially at low samples I noticed some color differences between 0.9 and 1.0 in this scene....
by CodeHD
Thu Aug 01, 2019 8:46 pm
Forum: Development
Topic: Tiled OIDN Denoising
Replies: 78
Views: 12372

Re: Tiled OIDN Denoising

Ok, I downloaded it today and tried it out. Worked directly, so no broken dependencies or something (I didn't try Blender viewport denoise yet). The change in the code was as easy as I thought. From a first quick test on the LuxMarkHotel @4K and 20 samples, there is a visible difference between the ...
by CodeHD
Tue Jul 30, 2019 11:25 am
Forum: Development
Topic: Tiled OIDN Denoising
Replies: 78
Views: 12372

Re: Tiled OIDN Denoising

Their implementation of tiled denoising now exposes it with a "max. memory" input, which is nice so we can now directly expose it as a memory setting instead of number of pixels. I could give it a try later this week, should be easy enough to implement as far as I see it. Just need to rename the til...
by CodeHD
Tue Jul 09, 2019 3:35 pm
Forum: Works in Progress
Topic: Random optics stuff
Replies: 2
Views: 912

Re: Random optics stuff

With no lens formula it's hard to get the lens in focus. I played little with the Zeiss ZM 35mm 1.4 Distagon design, but the Meyer Optik Görlitz Trioplan looks interesting. It's a 3 element lens with soap bubble bokeh like below: Indeed, the exact curvatures are very important :) Fortunately, you c...
by CodeHD
Tue Jul 09, 2019 2:22 pm
Forum: User Support
Topic: Artifacts with hybrid/bidir/light paths
Replies: 2
Views: 451

Re: Artifacts with hybrid/bidir/light paths

Ok I relaize I had some wrong thoughts earlier, plus some info missing: - I thought of the Suzanne head as intersectable, but it is not an emitter itself. However, it is matte, so you can connect to the Sun from there. -Also, there is a "detector" behind the lens, the usual matte-translucent slab. S...