Contributor to the Khronos Group's glTF 3D format specification and tools. Currently Chair of the Khronos PBR TSG, a sub-group devoted to refining and advancing the definition of Physically-Based Rendering within glTF. Cesium contributor with an interest in aerospace visualizations and 3D graphics of all kinds. Sometimes there are cool shaders in my Twitter feed.

Articles about recent PBR advances in glTF:

• Clearcoat, Transmission (glass), and Sheen (cloth): Press Release, Dec 2020

• Specular (replacement), Volumetric (attenuation), IOR (Index of Refraction): Press Release, July 2021