NVIDIA Open Sources MDL SDK
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Thank you @Fcardoso The volumetric light is available in the latest 2018.3 beta. In the visual environment setting, there is a new option to select Volumetric light fog. The screen I shared is from 2018.2 during that time I was using a script to enable it :)

NVIDIA Open Sources MDL SDK
21 August, 2018
News

NVIDIA has recently announced that the MDL, also known as Material Definition Language, SDK is now open source.

MDL software — a set of tools that integrate the precise look and feel of real-world materials into rendering applications — has long been supported by developers. It gives end-users the freedom to share physically based materials and lights between supporting applications.

For example, an MDL material — such as a specific piece of carpeting, upholstery or clothing — created in Allegorithmic Substance Designer can be saved to a library and then used in any other supporting application, like Adobe Dimension CC.

Users can build a library of these materials once and be confident they’ll maintain their appearance as they move between applications in a workflow. It’s an easy way to save significant time and effort — for both users and application developers.

The new open-source NVIDIA MDL SDK gives developers the freedom to expand and adapt MDL to their specific needs. They can add more functionality, work across more applications, exploit new platforms, port it to iPad or Android, create new backends, and more.

With full access to the MDL language, developers can feel at ease building their applications around the format as they have unrestricted access to the entire spec.

Enthusiasm from Developers

Allegorithmic has already built an entire MDL authoring tool as part of their Substance Designer application. With the MDL source, they have deeper access than ever before.

“We’re really happy to see NVIDIA make MDL more accessible with this move. We have been supporting the format very early on and hope for the ecosystem to grow,” said Sebastien Deguy, CEO at the company.

Adobe has already adopted NVIDIA MDL in Dimension CC for 3D designers.

“At Adobe, we’re very focused on the flow of creative content across the value chain, from initial concept through design all the way to marketing and sales,” said Ross McKegney, director of engineering at Adobe Dimension CC. “We’ve adopted physically based materials based on NVIDIA MDL across all of our next-generation 3D products and services as a robust and elegant way of expressing materials that look the same wherever they are used.”

And Epic’s Unreal Studio 4.20 now offers native support for MDL.

“Being able to use a single material definition, like NVIDIA’s MDL, across multiple applications and render engines is a huge benefit to the end-user,” said Ken Pimentel, senior product manager of the Enterprise team at Epic Games. “Now that we’ve added MDL support to Unreal Studio, our enterprise customers can see their material representations converted to real time in Unreal Engine without baking every parameter. This means their creative intent can be carried to new forms of expression.”

NVIDIA 

You can get more details here. Download the SDK and learn more about MDL on the NVIDIA Developers portal.

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