You will notice a drop-down at the top left of the Viewport that gives you the option to cycle through different render modes.

  • PBR Metalness: Physically-Based Rendering in Metalness Workflow.

  • Diffuse/Albedo: Color of the surface.

  • Metalness: Metallicity of the surface.

  • PBR Specular: Specular reflections map of the surface.

  • Gloss: Smoothness of the surface.

  • Roughness: Roughness of the surface.

  • Normal: Normals of the surface.

  • Displacement: Vertical displacement of the surface.

  • Occlusion: Soft shadows on the surface.

  • Layer Mask: Mask (visibility) of the selected layer.

  • Active Mask: This shows the mask of the type selected.

  • Material ID: Shows Material ID colors on your mesh. The Material ID image below is based on a custom 3D mesh.