LuxCoreRender Forums

Hello Can you explain it with some pictures YES, and thanks! This is a simple setup. A block that is made from two materials - one is a black one and the other one is clear. Both are with almost perfect polished surface qualities. setup.jpg this is the material for all faces black to air: black-part...

Hi everyone,

... obviously my of asking is not very suitable.
Let me try it in a different manner.

If I set my geometry up like in the *.blend file above, how many light will be reflected from the inner black face?

Thank you for your help.

Hello all, Almost one year ago I had almost same troubles but with BiDir and Metropolis: https://forums.luxcorerender.org/viewtopic.php?f=4&t=1198&p=14635#p14635 Unfortunately it wasn't resolved during that time. If really the metropolis sale causes this, will it appear with Sobol or Random as well?...

Hello,

I could really use some help here.
Thanks in advance.

BR

Hi,

epilectrolytics wrote: ↑

Mon May 11, 2020 8:08 pm

Knowing the average luminance of the image to render is the only Metropolis requirement

Why does the sampler need this? Isn't it a bit strange to have the result as an prerequisite? What about a MonteCarlo sampling strategy? Does it also need the average luminance?

BR

Hi all, just a quick question. How does luxcorerender handle the refelctivity of a fresnel glossy black material that is covered with a clear one? This *.blend file should show the principle: Intermediate.blend Usually it should be like this for light inicidence normal to the surface: For the clear ...

Hello, You are correct. This is in cd/m2 so if you set the tonemapper off and disable color management (show Raw values), the value you enter in your area light in Candela per Square meter (or artistic gain in LuxCore) will be the exact output value: 0.125 cd/m2 = RGB 32, 0.5 cd/m2 = RGB 128. Is the...

Hi, just a little question: how do you read light values from the rendering results? I mean how do you get the numbers? I needed some professional (means expensive) software for that task and I'm looking for workaround for this issue. From my understanding (at least) the *.exr results should show di...

Hi, Sorry I didn't try exact renderings since there is no official release yet. The changes are to quick during the last days to be sure that I'm on the right daily built. Generally I like the new scientific/artist separation. I'm trying to follow this thread but you lost me during the discussion ab...

Hi all, Please keep in mind that a camera does only see luminance (neither illuminance nor irradiance). Please refer this thread: https://forums.luxcorerender.org/viewtopic.php?f=4&t=1067&p=15301&hilit=CIE#p15301 Previous version did right results if we assume that the value that is saved in (not to...