Search found 219 matches

by lighting_freak
Thu Oct 08, 2020 5:39 pm
Forum: User Support
Topic: Glass with multiple materials assigned
Replies: 9
Views: 1782

Re: Glass with multiple materials assigned

Hi CodeHD,

Does the solution of FarbigeWelt solve your issue? Does it meet your expectations?

BR
by lighting_freak
Thu Oct 08, 2020 1:27 pm
Forum: User Support
Topic: Setup of a special material and emission situation
Replies: 2
Views: 641

Setup of a special material and emission situation

Hello all, I'd like to create a special material combination. It is a special red acrylic that allows also a special yellow light to come through it and still looking yellow. The following image shows the absorption of the red acrylic and the spectrum of the light source. Material_VS_Emssion.jpg Is ...
by lighting_freak
Tue Sep 22, 2020 12:46 pm
Forum: User Support
Topic: Glass with multiple materials assigned
Replies: 9
Views: 1782

Re: Glass with multiple materials assigned

Hello,

does this setup behave like you'd desired it?
forvideo.blend
(3.48 MiB) Downloaded 53 times
untitled.jpg
BR
by lighting_freak
Thu Jul 23, 2020 2:16 pm
Forum: User Support
Topic: Angular roughness/Angular glossiness
Replies: 23
Views: 4103

Re: Angular roughness/Angular glossiness

lighting_freak wrote:
Mon Jul 20, 2020 3:44 pm
Might be the right time to introduce kind of brdf node that allows to define the portion of scattering types (matte, glossy, specular) per incidence angle. Ideally with some optional interpolation types (e.g. linear, exponential etc) between those points.
maybe like this?
maybe like this?
by lighting_freak
Mon Jul 20, 2020 3:44 pm
Forum: User Support
Topic: Angular roughness/Angular glossiness
Replies: 23
Views: 4103

Re: Angular roughness/Angular glossiness

Hi,

Might be the right time to introduce kind of brdf node that allows to define the portion of scattering types (matte, glossy, specular) per incidence angle. Ideally with some optional interpolation types (e.g. linear, exponential etc) between those points.

What do you think?

BR
by lighting_freak
Wed Jul 15, 2020 4:41 am
Forum: User Support
Topic: Volume absorption definition
Replies: 1
Views: 463

Volume absorption definition

Hi all, From measurements I know the exact transmission of some different coloured clear materials. Due to having this measurement with different thicknesses I'm able to calculate the absorption coefficient. In old luxrender it was possible to transfer this absorption coefficient to the render engin...
by lighting_freak
Wed Jul 15, 2020 4:14 am
Forum: User Support
Topic: Angular roughness/Angular glossiness
Replies: 23
Views: 4103

Re: Angular roughness/Angular glossiness

Hi,

But if you select a static color instead of IOR the angular dependency is lost, isn't it?

BR
by lighting_freak
Tue Jul 14, 2020 7:54 pm
Forum: User Support
Topic: Angular roughness/Angular glossiness
Replies: 23
Views: 4103

Re: Angular roughness/Angular glossiness

Hi all, I think the "glossy" material node has an option called "IOR". If one select this the amount of reflection is calculated by Fresnel law. The Fresnel law makes a reflection more bright with more plain observation angle. Additionally the roughness parameter could be used to scatter this reflec...
by lighting_freak
Mon Jul 06, 2020 2:08 pm
Forum: Computer Graphic News
Topic: parallax mapping Fstorm
Replies: 15
Views: 6268

Re: parallax mapping Fstorm

Hi,
lacilaci wrote:
Thu Jul 02, 2020 12:22 pm
Not sure what's the problem, just switch to gpu and enable lighttracing.
From now on you're my personal hero. A test scene runs much quicker than before and reaches the good result in a time that I could get little animations with a single weekend of rendering.

Thank you very much.

BR
by lighting_freak
Thu Jul 02, 2020 11:11 am
Forum: Computer Graphic News
Topic: parallax mapping Fstorm
Replies: 15
Views: 6268

Re: parallax mapping Fstorm

Hi, with complicated light paths I meant something like that: Lichtleiter_neu.jpg I've added the blend-file to that post. If you'd like you could try to find a solution to reach this result without biDir. It would be really helpful for me to find something to speed those kind of visualisations up. T...