Check: Material Specular

Version:

Severity: Warning

Error message: The default value for specular should be 0.5.

Description

The material’s specular parameter is not set to 0.5.

The the specular value of the Principled BSDF node defines the amount of dielectric specular reflection in Blender, but this parameter is not exported to the glTF file by the exporter. It is fixed at 0.5 which correlates to an IOR of 1.5.

The core PBR material system in glTF supports the following channels of information:

• Base Color

• Metallic

• Roughness

• Baked Ambient Occlusion

• Normal Map (tangent space, +Y up)

• Emissive

Automatix Fix

Set the specular value of the Principled BSDF node to 0.5.

Manual Fix

Not necessary. See automatix fix.

Properties

Hosts: Blender

Types: Material