Reflectivity

Specular reflection represents light that bounces directly off a material’s surface, creating mirror like reflections. The reflection’s intensity depends on:

• Material Type: Metals reflect 60-100% of light, while non-metals (dielectrics) reflect 2-5%

• Surface Roughness: Smooth surfaces create sharp reflections; rough surfaces create blurred reflections

• Viewing Angle: Reflections become stronger at glancing angles (Fresnel effect)

Parameters

Display Name	Name	Type	Default
Roughness Amount	reflection_roughness_constant	float	0.5
Roughness Map Influence	reflection_roughness_texture_influence	float	0.0
Roughness Map	reflectionroughness_texture	asset
Roughness Map Color Space
Metallic amount	metallic_constant	float	0.0
Metallic Map Influence	metallic_texture_influence	float	0.0
Metallic Map	metallic_texture	asset
Metallic Map Color Space
Specular	specular_level	float	0.5
Enable ORM texture	enable_ORM_texture	bool	false
ORM Map	ORM_texture	asset
ORM Map Color Space

Roughness Amount

Defines how rough or smooth a surface appears when viewed from any angle. A value of 0 creates perfect mirror-like reflections, while higher values (up to 1) create increasingly diffuse, blurred reflections. Unlike anisotropic roughness, this property affects light scattering uniformly in all directions.

The range is as follows:

• 0 = Perfectly reflective surface

• 1 = No reflectivity

Roughness 0.00

Roughness 0.25

Roughness 0.5

Roughness Map Influence

Mixes the Roughness Map power over the Roughness value.

The range is as follows:

• 0 = Roughness Value

• 1 = Roughness Map

Roughness Influence 0.0

Roughness Influence 0.5

Roughness Influence 1.0

Roughness Map

Accepts a texture file to define roughness values.

Roughness Map Color Space

Metallic Amount

Metallic Amount

Determines if the surface is Dielectric (non-metallic) or Conductive (metallic).

The range is as follows:

• 0 = Dielectric (non metalallic)

• 1 = Conductive (metallic)

Metallic Amount: 0.0

Metallic Amount: 0.5

Metallic Amount: 1.0

Metallic Map Influence

Mixes the Metallic Map power over the Metallic amount.

The range is as follows:

• 0 = Metallic Amount

• 1 = Metallic Map

Metallic Map Influence: 0.0

Metallic Map Influence: 0.5

Metallic Map Influence: 1.0

Metallic Map

Enables the application of a texture map to define metallic areas on the surface.

Metallic Map Color Space

Specular

The specular reflectivity of the material.

Specular: 0.0

Specular: 0.5

Enable ORM Texture

Allows use of a “packed” Occlusion, Roughness and Metallic map instead of separate maps for each. Each channel of the texture is used as follows:

• Red: Occlusion

• Green: Roughness

• Blue: Metallic

ORM Map

“Packed” ORM map texture input.

ORM Map Influence: 0.0

ORM Map Influence: 0.5

ORM Map Color Space