Uploaded October 2025 | Updated September 2026, 1 day ago
OpenPBR Surface is a shading model that renders consistently across Arnold, VRay, Redshift, Cycles, Karma, Omniverse, Octane, Unreal Engine and more. In this video we break down exactly how its layered system works. You'll learn how to control every aspect of your material using one unified framework.
OpenPBR Surface is a highly art-directable material model: an expressive yet intuitive set of parameters, with direct control over the perceived colors, detailed enough to represent most real-world materials. It is physically accurate, meaning that materials look realistic by default, while still giving artists the freedom to represent imaginary ones. OpenPBR Surface aims to strike a balance between simplicity of use and expressivity.
This physically based shading model has been developed to offer creatives a more artist-friendly bridge between different software applications. It's an open standard backed by major players like Autodesk, Adobe, and NVIDIA.
help.autodesk.com/view/ARNOL/ENU/?guid=arnold_user_guide_ac_surface_shaders_ac_open_pbr_html
github.com/AcademySoftwareFoundation/OpenPBR
0:00 Introduction
1:12 Model Overview
2:17 Metal
3:25 Dielectric
3:44 Diffuse Base
4:44 Subsurface scattering
6:18 Transparent Base
7:41 Transmission Dispersion
8:27 Specular Roughness
9:38 Coat
10:50 Fuzz
11:28 Thin-film iridescence
12:42 Emission
13:15 Bump mapping
13:36 Thin-walled mode
14:34 Conclusion
OpenPBR Surface is a shading model that renders consistently across Arnold, VRay, Redshift, Cycles, Karma, Omniverse, Octane, Unreal Engine and more. In this video we break down exactly how its layered system works. You'll learn how to control every aspect of your material using one unified framework.
OpenPBR Surface is a highly art-directable material model: an expressive yet intuitive set of parameters, with direct control over the perceived colors, detailed enough to represent most real-world materials. It is physically accurate, meaning that materials look realistic by default, while still giving artists the freedom to represent imaginary ones. OpenPBR Surface aims to strike a balance between simplicity of use and expressivity.
This physically based shading model has been developed to offer creatives a more artist-friendly bridge between different software applications. It's an open standard backed by major players like Autodesk, Adobe, and NVIDIA.
help.autodesk.com/view/ARNOL/ENU/?guid=arnold_user_guide_ac_surface_shaders_ac_open_pbr_html
github.com/AcademySoftwareFoundation/OpenPBR
0:00 Introduction
1:12 Model Overview
2:17 Metal
3:25 Dielectric
3:44 Diffuse Base
4:44 Subsurface scattering
6:18 Transparent Base
7:41 Transmission Dispersion
8:27 Specular Roughness
9:38 Coat
10:50 Fuzz
11:28 Thin-film iridescence
12:42 Emission
13:15 Bump mapping
13:36 Thin-walled mode
14:34 Conclusion
