Thank you much for your short feedback!
Mediabook
- FarbigeWelt
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Re: Mediabook, Welcome to Your Age of Quantum Consciousness
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
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- FarbigeWelt
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Brilliant Revealed Luxcorey
- The great and amazing .. - \ Bingg Elliv' Aand /- ..
Hidden, unrevealed, private and known capital punishment to see it -- Until now!
Today, all press is overwhelmed by the opening of the best guarded secret of this world.
All grace for the yesterday crowned, very noble and exceeding broad minded successors,
the twin siblings, the well protected children of our most deeply admired former majesty.
May the royal siblings rule for ever equitable and merciful,
with all the healthiness precious human beings deserve!
- - Here it finally is! - -
The first allowed to take picture since photography's invention.
The unbelievable fifteen centimeters radiant,
the biggest, the most brilliant, the one and only pink diamond on earth.
openCL, path hybrid, Sobol
250324 samples, 02h16m
2.42M pixels
keywords: diamond; refraction; inner reflections; dispersion; gold; reflections; blue matte; indirect light; direct light
Hidden, unrevealed, private and known capital punishment to see it -- Until now!
Today, all press is overwhelmed by the opening of the best guarded secret of this world.
All grace for the yesterday crowned, very noble and exceeding broad minded successors,
the twin siblings, the well protected children of our most deeply admired former majesty.
May the royal siblings rule for ever equitable and merciful,
with all the healthiness precious human beings deserve!
- - Here it finally is! - -
The first allowed to take picture since photography's invention.
The unbelievable fifteen centimeters radiant,
the biggest, the most brilliant, the one and only pink diamond on earth.
openCL, path hybrid, Sobol
250324 samples, 02h16m
2.42M pixels
keywords: diamond; refraction; inner reflections; dispersion; gold; reflections; blue matte; indirect light; direct light
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
MacBook Air with M1
MacBook Air with M1
Re: Brilliant Revealed Luxcorey
Awesome!FarbigeWelt wrote: ↑Fri Sep 27, 2019 1:31 pm - - Here it finally is! - -
The first allowed to take picture since photography's invention.
The unbelievable fifteen centimeters radiant,
the biggest, the most brilliant, the one and only pink diamond on earth.
Brilliant Revealed Luxcorey.png
openCL, path hybrid, Sobol
250324 samples, 02h16m
2.42M pixels
keywords: diamond; refraction; inner reflections; dispersion; gold; reflections; blue matte; indirect light; direct light
i hope you don't mind, but can you tell us more about the settings you used for this beauty here?
what i mean is how did you get 250324 samples in only 2 hours? that to me is enviable sorcery!
also, i am very interested in how you set up that pink diamond material
- FarbigeWelt
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Re: Brilliant Revealed Luxcorey
Thank you for your feedback.arescet wrote: ↑Sat Sep 28, 2019 6:06 pm Awesome!
i hope you don't mind, but can you tell us more about the settings you used for this beauty here?
what i mean is how did you get 250324 samples in only 2 hours? that to me is enviable sorcery!
also, i am very interested in how you set up that pink diamond material
First, I have to graphic cards running, amd rx 5700 xt.
Second, the scene and the materials are simple.
The room cuboid is based on solidified cube and has real room size.
There are four point lights. Below each there is a flat cuboid reflector. This way there is only direct light from a spot light with a narrow angle.
The table is a cuboid. The brilliant is based on standard Blender add-on, one for additional meshes.
The golden shell is made with cloth physics. Its material is a golden yellow mirror.
The brilliant's material is glass with the IOR of diamonds, with a faint pink. All other materials are matte.
There is no cache used but light tracking for the few caustics.
Due to indirect lightening and the caustics the render needs at least 15'000 to look okay and 25'000 samples to look great.
Optimized clamping avoided bright fireflies, soft fireflies left are removed by denoising with OIDN.
In contrast to more complex scenes this jewel renders with 8.5 MSamples/s.
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
MacBook Air with M1
MacBook Air with M1
Re: Brilliant Revealed Luxcorey
Thank you for well thought out and detailed response, i appreciate it very much!FarbigeWelt wrote: ↑Mon Sep 30, 2019 1:38 am
Thank you for your feedback.
First, I have to graphic cards running, amd rx 5700 xt.
Second, the scene and the materials are simple.
The room cuboid is based on solidified cube and has real room size.
There are four point lights. Below each there is a flat cuboid reflector. This way there is only direct light from a spot light with a narrow angle.
The table is a cuboid. The brilliant is based on standard Blender add-on, one for additional meshes.
The golden shell is made with cloth physics. Its material is a golden yellow mirror.
The brilliant's material is glass with the IOR of diamonds, with a faint pink. All other materials are matte.
There is no cache used but light tracking for the few caustics.
Due to indirect lightening and the caustics the render needs at least 15'000 to look okay and 25'000 samples to look great.
Optimized clamping avoided bright fireflies, soft fireflies left are removed by denoising with OIDN.
Your hardware is making me drool man, nice!
maybe i will sell both my kidneys someday for two GPUs too
sorry for the new-guy question but, what do you mean by "light tracking"? did you mean light tracing?
also in the last few images, what do you mean by "factor"?
i would completely understand if you just give me links so i can do some reading on my own about light tracking and the factor you mentioned
thanks again for your response!
- FarbigeWelt
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Re: Brilliant Revealed Luxcorey
Ooops! Yes, I meant light tracing with light tracking. I think tracing and tracking is synonymous. The BlenderLuxCore uses the term light tracing.
The material of the brilliant has an estimated value for dispersion, dispersion equals coefficient B see Cauchy's equation. You should be able to find other sites with coefficient B values for the equation, including one for diamond. But for some unknown reason there are different notations of Cauchy's equation with different units for the coefficients and additional coefficients. I tried to rearrange some formulae in an algebraic matter to proof their equality and to transform the coefficient into one unit. Unfortunately I was not successful in the time I wanted to spend. In addition, I found no regularity in comparison of index of refraction and Cauchy's coefficient B. Finally, if there is no value in Wikipedia, the best way is to guess and trial error until result looks appropriate.
With factor nothing else than zoom factor is meant. I zoomed into parts of the image to show progress / converging depending on Sample count.
Cheers!
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
MacBook Air with M1
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Re: Brilliant Revealed Luxcorey
oooh cauchy!FarbigeWelt wrote: ↑Tue Oct 01, 2019 9:34 am
Ooops! Yes, I meant light tracing with light tracking. I think tracing and tracking is synonymous. The BlenderLuxCore uses the term light tracing.
The material of the brilliant has an estimated value for dispersion, dispersion equals coefficient B see Cauchy's equation. You should be able to find other sites with coefficient B values for the equation, including one for diamond. But for some unknown reason there are different notations of Cauchy's equation with different units for the coefficients and additional coefficients. I tried to rearrange some formulae in an algebraic matter to proof their equality and to transform the coefficient into one unit. Unfortunately I was not successful in the time I wanted to spend. In addition, I found no regularity in comparison of index of refraction and Cauchy's coefficient B. Finally, if there is no value in Wikipedia, the best way is to guess and trial error until result looks appropriate.
With factor nothing else than zoom factor is meant. I zoomed into parts of the image to show progress / converging depending on Sample count.
Cheers!
i see, so about dispersion then.
i get what you mean with factor now, thanks for the reading reference!
Re: Brilliant Revealed Luxcorey
You probable already know the refractiveindex.info databaseFarbigeWelt wrote: ↑Tue Oct 01, 2019 9:34 am Unfortunately I was not successful in the time I wanted to spend. In addition, I found no regularity in comparison of index of refraction and Cauchy's coefficient B. Finally, if there is no value in Wikipedia, the best way is to guess and trial error until result looks appropriate.
https://refractiveindex.info/?shelf=3d& ... ge=diamond
I get very high B value, maybe my formula is wrong
cauchy A: 2.381942809424
cauchy B: 0.012035304932
- FarbigeWelt
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Re: Brilliant Revealed Luxcorey
Thank you for sharing your calculations. Your idea is good to list several wavelengths and refracting indices because one requires at least two wavelengths and two refraction indices for the calculation of two coefficients, A and B, of Cauchy's equation for dispersion.Fox wrote: ↑Thu Oct 03, 2019 12:25 pm You probable already know the refractiveindex.info database
https://refractiveindex.info/?shelf=3d& ... ge=diamond
I get very high B value, maybe my formula is wrong
cauchy A: 2.381942809424
cauchy B: 0.012035304932
cauchy equation diamond.7z
I got a slightly different result (with sodium D-line and solar G-line):
A 2.4061 (A means B in Cauchy's equation, en.wikipedia, 04. Oct 2019)
B 3.65E-03 [µm^2] (B means C in wikipedia)
I completed your spread sheet with references and formulae including my algebraic isolation of coefficient B.
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
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- FarbigeWelt
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Déjà vu: Prisms
Last time -CPU BiDir ..
A Cascade of Prisms
.. this time path openCL with light tracing, rather strong clamping and OIDN treated with 8% raw part to keep some soft residual noise. 1.5 HD, 26'890 samples, 04h19m. Raw image is quite noise free but now in comparison with picture from 29. April 2019 clamping has been to strong this time. (I guess the current picture needs an update.)
A Cascade of Prisms
.. this time path openCL with light tracing, rather strong clamping and OIDN treated with 8% raw part to keep some soft residual noise. 1.5 HD, 26'890 samples, 04h19m. Raw image is quite noise free but now in comparison with picture from 29. April 2019 clamping has been to strong this time. (I guess the current picture needs an update.)
Light and Word designing Creator - www.farbigewelt.ch - aka quantenkristall || #luxcorerender
MacBook Air with M1
MacBook Air with M1