Viewport Display
The Workbench engine does not work with shader trees. In various tabs of the Properties are Viewport Display panels where settings can be adjusted that the Workbench engine uses.
Object
The Viewport Display panel in the Object Properties has several settings that are used by the Workbench Engine.
Reference
Panel:
Properties ‣ Object ‣ Viewport Display
Shadow
When the Shadow in the Options is enabled this object will cast a shadow.
In Front
When checked the object will be rendered in front of the other objects in the scene.
Color
The color to render the object in when object color needs to be rendered. The alpha channel can be used to render the object transparent.
Material
The Viewport Display panel in the Material Properties has several settings that are used by the Workbench Engine.
Reference
Panel:
Properties ‣ Material ‣ Viewport Display
Color
The color when rendering the material. The alpha channel can be used to render the object transparent.
Metallic
Changes the amount of specular lighting. This is only available when Specular Lighting in the Options is enabled.
Roughness
Changes the amount of roughness for specular lighting. This is only available when Specular Lighting in the Options is enabled.
World
The Viewport Display panel in the World Properties has several settings that are used by the Workbench Engine.
Reference
Panel:
Properties ‣ World ‣ Viewport Display
Color
The color of the world background. This color will be rendered in the background of the scene.