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An alpha build of the Lighthouse 2 path tracing benchmark is now available: http://www.cs.uu.nl/docs/vakken/magr/2019-2020/files/Lighthouse2%20RTX%20Benchmark%20vA0.2,feb17.zip The source code for this package is available from github: https://github.com/jbikker/lighthouse2 This demo is aimed at RTX...

Yes. So if you're reading this and got a twitter account: share your name!

You can follow me as @j_bikker. Graphics retweets, LH2 news, software optimization.

Hello all, Activity on ompf2 has mostly halted. Considering the ongoing onslaught of spambots I think it is best if I completely disable new user registrations. The board will remain accessible, and if you want to add a member I can do this manually, but the purpose of the board will probably change...

Good find, you're right!
I have removed the erroneous line now.

Some answers: Page 152 of my thesis: you are correct, MIS is not computed in that code. Page 50 of lecture 8: this is just the handling of NEE. Doing MIS like that also requires MIS for implicit light paths. You may take a look at the path tracing kernels of Lighthouse 2, which implements this. - Ja...

Marijn Suijten created a Linux port of Lighthouse 2:
https://github.com/MarijnS95/lighthouse2/tree/linux
This will be rolled into the main repo soon.
Note that the Linux repo does not yet include the recently added Vulkan core.

An updated version appeared. You now get 4 billion instances of 4 billion triangles, if you have the memory. This comes at the expense of barycentric coordinate accuracy, so having a 4km x 4km floorplane with a 32k x 32k texture may be less accurate than it was. For most use cases this seems to be a...

There is no filter yet, although I have working code. The focus for now is on a proper platform around the cores, after that more advanced cores will be added.

Yes, 12 bit is reserved for the instance index, as discussed earlier. Apparently something is still 'signed' somewhere so you lose another bit, yielding 2048. I suspect it will work till 2047, after that you will get the crash. This will be relaxed in a future version.

Awesome dragon scene btw.

Hello, The blue noise is directly used from Heitz: https://eheitzresearch.wordpress.com/762-2/ In coresettings.h you will find the data distributed by Heitz, stored as 64-bit hexadecimal numbers. Once the renderer runs out of blue noise samples it switches to Marsaglia's xor32 RNG, seeded with the t...