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DiffuseTransmission

A component useful for representing non-shiny matte materials that transmit light, such as lampshades or translucent paper screens. It has a roughness parameter that uses the Oren-Nayar method for representing rough surfaces made up of microfacets. In practical terms, increasing this parameter is useful for representing powdery surfaces.

Editing a component using DiffuseTransmission

Diffuse Reflection

ReflectionColour

The basic color of the component. This can be a single color value or a texture map.

Input: Color or Map

ReflectionColour: White
ReflectionColour: White
ReflectionColour: Black
ReflectionColour: Black
ReflectionColour: Red
ReflectionColour: Red

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DiffuseRoughness

Controls the Oren-Nayar roughness of the material. Higher values make the surface look more powdery or rubbery.

Input: 0.0 – 1.0 or Map

DiffuseRoughness: 0.0
DiffuseRoughness: 0.0
DiffuseRoughness: 0.5
DiffuseRoughness: 0.5
DiffuseRoughness: 1.0
DiffuseRoughness: 1.0

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Diffuse Transmission

TransmissionWeight

Controls how much light can pass through the material. Setting this to zero will make the material opaque. For real-world materials, this parameter should always be less than 0.5.

Input: 0.0 – 1.0 or Map

TransmissionWeight: 0.0
TransmissionWeight: 0.0
TransmissionWeight: 0.5
TransmissionWeight: 0.5
TransmissionWeight: 1.0
TransmissionWeight: 1.0

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TransmissionColour

Controls the color of light passing through the material. For most materials this would be the same as the ReflectionColour. This can be a single color value or a texture map.

Input: Color or Map

TransmissionColour: White
TransmissionColour: White
TransmissionColour: Black
TransmissionColour: Black
TransmissionColour: Red
TransmissionColour: Red

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Decal, Coating, and Surface Layers Only

Weight

Weight

Gives control over the contribution of the layer to the overall material appearance. A value of 1.0 will completely block any effect of any material layers below. A value of 0.0 will remove the layer's contribution to the overall material appearance.

Input: 0.0 – 1.0 or Map

Weight: 0.1
Weight: 0.1
Weight: 0.5
Weight: 0.5
Weight: 1.0
Weight: 1.0

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Bump Map

Normal

Allows you to set a bump map to simulate surface detail and control the intensity and orientation of the effect.

Input: 0.0 –, or Map

Normal: 0.2
Normal: 0.2
Normal: 1.0
Normal: 1.0
Normal: 3.0
Normal: 3.0

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Material Components using DiffuseTransmission

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Base

DiffuseTransmission: Lampshade
Lampshade
DiffuseTransmission: PaperTranslucent
PaperTranslucent

Surface

DiffuseTransmission: Dirt1
Dirt1
DiffuseTransmission: Dirt2
Dirt2
DiffuseTransmission: Dirt3
Dirt3
DiffuseTransmission: DustStreaks
DustStreaks
DiffuseTransmission: DustUniform
DustUniform
DiffuseTransmission: DustVariable
DustVariable


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