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I shoot some more photons, 8 millions and filtered with n-value 8000. This produced about 43.000 cells wich i think is ok. (took me about 6 minutes to generate) We can now even start to see the sunlights shape in the irradiancemap. The splotches start to come back and i should probably use even high...

I did a rendertest with the above irradiancemap (photonmapping + FG 800 ) and the endresult seem to render quite fast and without to much splotches. There is still artifacts in the red circle wich needs some higher FG values and i still think we need a bit more detailed Irradiancemap. "After i ...

This is still 200.000 photons but now with N-value 8000. The numbers of cells is rather low (1500) but the light solutions is drastically improved and better reflect the true lighting conditions.

This is the result of 200.000 photons and N-value 2000. Much smoother but still with some strange bright/dark patterns where it shouldnt be any. When we raised the N-value the numbers of "cells" for the irradiancemap drastically dropped to 5000. This is because we have taken the 200.000 ph...

I change the number of photons to 200.000 instead to get a more detailed irradiance wich gives me this result. More detailed but still alot of highintensity speckles that comes from the highintensity HDRI. The number of "cells" in the irradiancemap is now up to 34.000. We must increase acc...

I will try to explain The relationship between photons/N-value/finalgather/splotches. These are the most important things (only things) you need to understand. im not the most pedagogic person but will try my best :D Here i have a simple room wich i intend to light with lightmaping. The skylight wic...

Oh.. I used 7zip (opensource) to zip the archive but used it with standard zip algorithm. i will look at the archives again when i get home.

From a light experiment i played with

(Scene modeled by Branko a.k.a. 'd.sign')

Beautifull as always.

Do you use limited region to do a quick test?

The higher dynamic or strenght you have in a hdri, the higher settings you need in ANY renderer to get a splotchfree/noisefree render. One way to solve it is to limit the dynamic range of the hdri a little bit by adding "hdri exsposure" to the image, example whitepoint 1.0 /blackpoint 80%....

Pathtracing is a "bruteforce" approach to radiosity comparable to montecarlo algorithm or like fprime/lw works. Photonmapping is a simpler/faster way to shoot bursts of photons and approximate the global illumination comparable to lw's own interpolated radiosity mode. On top on this interp...

You can download latest Kray demo from Kraytracing.com. It is 1.612 and you can controll version number in the renderwindow. About the doublesided tag, Kray will not understand that. You can't controll doublesided flag per surface but you can instead add cam_singleside 0; in kray's tailer wich will ...

I have done some tests with Kray AA and native Lw AA. Kray is the fastest and lw is the slowest. What! ( i hear you say) Yes i have also been concerned about how "slow" AA work's in kray and Grzegorz have also worked hard to improve it alot. So why is it so slow and why does i say it's fas...

Remember that "oversample" in v1.6x and up is working opposite, Higher than 100% is an increase of samples.