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VOOZH | about |
graylightau asked:
Can you comment on the availability of lighting analysis modes (calibrated false colour luminance and illuminance AOVs) in software using iRay - especially Omniverse?
Since the 'death' of Bloom Unit and the stalled development of iRay4Rhino, there seems to be a real lack of this functionality. I'm a lighting designer and lucky enough to still have access to Bloom Unit, but this has me stuck in SketchUp 2019.
Iray / RTX Accurate in Omniverse comes with the irradiance AOV. In addition, the same MDL materials / environments / etc. are supported there, so you should be able to just transfer everything over.
What is still missing though (for now) in OV is native support for irradiance probes, that can be place as kind of a measurement device everywhere in the scene.
In principle all apps using the Iray SDK could expose all irradiance functionality, so this was nothing that was done specifically for Bloom Unit (although it featured a lot of great convenience functionality and the calibration of course!).
Another 2022.0.1 vs 2022.1.0 comparison: When navigating with guidance enabled (i.e. 1spp), one now gets a much higher quality, especially in complex lighting situations (e.g. full NVIDIA headquarter scene).
Anonymous asked:
So far testing Iray with the 4090 is not yielding the expected performance enhancements when compared to other rendering engines (versus previous flagship 3090ti). Other engines tend to double (or more) performance with a 4090, while Iray is maybe 70% faster at best, sometimes just 60% faster. Is this as good as the 4090 can get with Iray? Or can an updated Iray with the latest CUDA support improve performance? On that note, when can we expect the next version of Iray SDK?
The next Iray SDK (2022.1.0 final) is due beginning of december. Some Ada/Lovelace performance improvements may still be possible for that one, but from our own tests we already actually see an average ~2x improvement comparing various scenes on a 4090 vs a 3090. Will post benchmark results soonish, mileage varies heavily on scene types.
2022.0.1 vs 2022.1.0, so not only does the guided sampling for caustics decrease noise, but in general we fixed some issues/bugs with some of the difficult caustic paths.
Feature Highlights:
Guided sampling during camera movement
Guided sampling support for the caustic sampler
Much faster material and environment updates
New spectral sun&sky model
Native Lovelace & Hopper support
Native Sphere/Particles support
MotionBlur support for fiber/curve vertex motion
Catmull-Rom and linear data support for fibers/curves
..and the usual pile of bugfixes
Iray / RTX Accurate highlights:
Guided sampling exposed
Iray Server connections possible within OV
atomac2020 asked:
Such great progress has been made with Iray. I am a heavy Maya / Iray user. The number one thing I wish for would be the implementation of Cryptomatte. It is such a HUUUGE time saver in post-production. I know, I can still use the usual object and materials ID's. But Crypto is another level. Do you consider implementing Cryptomatte anytime?
Cryptomatte most likely not, but Multi Matte.
Anonymous asked:
Hi, do you have any details on Lovelace support? Does the current version of Iray support Lovelace or is an updated required?
All versions since/including Iray 2020.1.0 are Ada Lovelace compatible already.
So it depends in which product and especially which version you use the Iray SDK, but to my knowledge almost all Iray accelerated apps out there feature at least that version already.
Some more Iray shots from the presentation
Check out this NVIDIA presentation, containing a lot of iray rendered footage: NVIDIA Special Address at SIGGRAPH 2022 - YouTube
..is out. Highlights:
Emissive Volumes (and these are quite fast, too).
AI Upscaling.
Better quality and performance when using guided sampling.
Overall more precise rendering and improved interactivity speed.
Tons of fixes and minor improvements.. ..