Yes, that’s part of my daily tasks for Chaos Group, and it’s an ongoing process, as you well said, quite rife with pitfalls and false conclusions, due to the vastly different approach to rendering (forget BRDF models, it’s ALL skewed like i showed above, and how you found out. Odd internal color space…).
It’s for internal use, and doesn’t just include Octane.
However, Grant, someone of your caliber and fame stating flatly that > V-Ray RT GPU simply gets demolished by Octane. isn’t very much of help.
My tests say quite differently, and have all been conducted under the most rigorous of controlled conditions, feature by feature, measured noise level by measured noise level, number of samples by number of samples.
RT is still missing a few features, agreeably, which are being implemented, but what is there, as far as my testing goes, is of very high quality, and -so far- unbeaten speed.
By anyone else.
I shall ask the (very busy, with Siggraph ongoing) powers that be if i can share something here.