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GTC 2018 presentations

Sorry for the delay, here some of the iray and MDL related recordings from GTC 2018 earlier this year:

Adaptive Ray Tracing Rendering Powered by Deep Learning: http://on-demand.gputechconf.com/gtc/2018/video/S8788/

Render Your Projects 10x Faster with SOLIDWORKS Visualize! http://on-demand.gputechconf.com/gtc/2018/video/S8454/

Integrating the NVIDIA Material Definition Language MDL in Your Application: http://on-demand.gputechconf.com/gtc/2018/video/S8227/

MDL & Substance in Automotive: http://on-demand.gputechconf.com/gtc/2018/video/S8725/

Sharing Physically Based Materials Between Renderers with MDL: http://on-demand.gputechconf.com/gtc/2018/video/S8225/

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vMaterials update

Head over to https://developer.nvidia.com/vmaterials as the huge library got another large update:

Flexibility: Legacy Materials from 1.0.1 and 1.1.0 have been revamped with the designer in mind. They are being re-introduced with a curated collection of standardized presets and an intuitive parameter User Interface. Quickly and easily adjust your favorite materials like wood, and concrete to match the aesthetic needs of your project without having to manually change images.

Standardization: Enjoy cleaner, more intuitive vMaterials in this release. Preset patterns now match each other while pattern changes have been moved into their own dedicated material. Finding the look you want and the color scheme you need to make the perfect visualization will be easier than ever. See what’s changed by checking out Bricks, Tiles, and Wallpapers.

UI changes: vMaterials now have cleaner UIs and annotations, making it a breeze to understand parameters and make the changes you want to your materials.

Fixed: Materials with known bump and display issues have been fixed. Enjoy two sided mesh materials and ground materials hassle free!

And, as usual, a whole set of newly created materials for your projects!

MDL 1.4 support

The next version of iray will feature full MDL 1.4 (as usual with all MDL updates):

UDIM-support, simplifies texturing workflows by blending multiple textures into a single UV space:

Color weights for BSDF layering allows for easier modelling of realistic colored coatings.

Complex IOR: accurately render metals by specifying their complex index of refraction:

In addition, performance was improved for all cases where JIT compilation must be used (like custom/end-user written MDL materials)!

Performance improvements 2018

What? Two posts on one day?

Actually this is worth it, as there are pretty huge performance improvements coming up for iray interactive! Due to NVIDIA’s recent ray tracing performance improvements, we measured between 9% performance improvement, up to scenes taking less than half of the time (for overall rendering, not just ray tracing)!

Heavily instanced scene, before: 278, now 121 secs for 2000 samples/pixel (FullHD) on Volta architecture! And of course with an (almost) pixel identical result!

AI Denoising

Seems like some people actually missed that iray includes the by-now-famous NVIDIA AI denoiser. And that it actually was the first product to ship that included it (https://www.nvidia.com/en-us/design-visualization/iray/features/)!

Above you see a scene rendered with 1000 samples/pixel, with still some noise left.

The same image at 100 samples/pixel, with denoising enabled.

And the first image (1000 s/p) with denoising enabled.