(L) [2019/08/26] [ost
by jbikker] [Optix7 core added] Wayback!A new core has been added to support the recently released Optix7 SDK. The API for Optix 7 has changed a lot since 6, so a lot changed in the core as well. Good news is that Optix 7 is a lot cleaner and provides much more low-level control over acceleration structure construction and ray traversal, so overall performance got a significant boost: about 35% on RTX hardware.
Code is on Github, as usual.
(L) [2019/09/10] [ost
by straaljager] [Optix7 core added] Wayback!>> jbikker wrote: ↑Mon Aug 26, 2019 1:42 pm
A new core has been added to support the recently released Optix7 SDK. The API for Optix 7 has changed a lot since 6, so a lot changed in the core as well. Good news is that Optix 7 is a lot cleaner and provides much more low-level control over acceleration structure construction and ray traversal, so overall performance got a significant boost: about 35% on RTX hardware.
Code is on Github, as usual.
This is awesome news, however I also read the following in your Twitter feed:
>> @j_bikker wrote:Hm, Optix7 is sadly not the fastest option on Pascal and older; Optix6 is faster, and the Optix Prime layer of Optix 5 is faster than that. By a significant margin too: Prime is 57% faster, even with shading included...
Do you see the same performance discrepancy on Turing/RTX? We're planning to move our renderer from Optix 5 (no prime) on Volta GPUs to Optix 7 (or Lighthouse) on RTX GPUs soon and every bit of performance would be welcome.
(L) [2019/09/10] [ost
by jbikker] [Optix7 core added] Wayback!On Turing and Volta, Optix 7 is by far the best option. On Pascal and older, Optix Prime is faster, and in my experiments, Optix Prime from Optix 5.x is faster than Optix Prime in 6.x. I am not sure if Prime is still supported by 7.x, although support would be trivial to add (this is basically what Lighthouse does in fact).