USD, Solaris and Karma in Houdini 20 (and elsewhere…)

Solaris saw the light of day 4 years ago in Houdini 18. When I tried it out for the first time back then, it was still very bumpy and initially put me off. One crash followed another. If that happens today, then it’s probably due to the graphics card driver, which is supposed to be up to date.

So that's over and Solaris has grown up together with Karma XPU, the new hybrid renderer. Time to take a look at it! Although I had experimented with Karma and Solaris (LOPS) time and again, I didn't want to make the switch until it had fewer teething problems. That was the case with Houdini 20. I also wanted to build up my scenes in Houdini now and then open them up in Omniverse and Marmoset and see if that works. But more on that later... Karma There are a few new features in the Karma renderer. The most important one is that the XPU of the graphics card renderer is now out of beta. Many other things - for example dispersion, absorption, nested transparent materials (dielectrics), material blending, geometry lights (not for volumes), rounded corners, hextiling etc. etc. don't really need to be explained in detail as they are not really innovative - but they are also very useful and complete Karma. An important function in Karma CPU is to be able to set the samples per geo and thus sh...


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