Opacity#

Opacity controls material transparency by specifying how much light passes through each point on a surface. These grayscale textures define transparency levels from 0 (fully transparent) to 1 (fully opaque)

Parameters

Display Name

Name

Type

Default

Enable Opacity

enable_opacity

bool

false

Enable Opacity Texture

enable_opacity_texture

bool

false

Opacity Amount

opacity_constant

float

1.0

Opacity Map

opacity_texture

asset

Opacity Map Color Space

Opacity Map Mono Source

opacity_mode

enum

mono_average

Opacity Threshold

opacity_threshold

float

0.0

OmniPBR Enable Opacity

Enables overall opacity.

../../_images/OmniPBR_OpacityAmount0.5.png

Opacity Amount: 0.5#

../../_images/OmniPBR_EnableOpacity0.png

Opacity Amount: 0.5#

OmniPBR Enable Opacity Texture

Enables opacity mapping.

../../_images/OmniPBR_EnableOpacity1.png
../../_images/OmniPBR_OpacityAmount0.5.png

OmniPBR Opacity Amount

Opacity value of material. Works in conjunction with Opacity Threshold and Fractional Cutout Opacity

../../_images/OmniPBR_EnableOpacity0.png
../../_images/OmniPBR_OpacityAmount0.5.png
../../_images/OmniPBR_OpacityAmount0.1.png

OmniPBR Opacity Map

Accepts a texture file to define an opacity mask.

../../_images/OmniPBR_EnableOpacity0.png

OmniPBR Opacity Map Color Space

OmniPBR Opacity Map Mono Source

Valid Opacity Map Mono Source Values
Specifies opacity channel or evaluation of the map for opacity.
  • mono_alpha : Uses the alpha channel of the image as the source for evaluation.

  • mono_average : Uses the average of the RGB channels as the source for evaluation.

  • mono_luminance : Uses the luminance of the image as the source for evaluation.

  • mono_maximum : Uses the max value of the RGB channels as the source for evaluation.

OmniPBR Opacity Threshold

Cutoff for determining object cutout opacity. If threshold is equal to 0, then use fractional opacity. If threshold is greater than 0, then object is opaque when opacity is greater than threshold.

../../_images/OmniPBR_OpacityThreshold0.2.png
../../_images/OmniPBR_OpacityThreshold0.3.png
../../_images/OmniPBR_OpacityThreshold0.35.png