DriveWorks Pro 23

PBR Advanced

PBR Advanced - Render Property

PBR Advanced introduces a clearcoat layer to the PBR material.

Clearcoat enables the reproduction of a clear coating (such as varnish or water) on materials where light is reflected before being transmitted to the base layer.

PBR Example - Without Clearcoat	PBR Example - With Clearcoat

Render Properties

Properties available on PBR render property:

• Albedo

  Albedo is similar to Diffuse Color but will factor in the reflection color when a material is metallic.

  When a Diffuse Texture is applied the RGB values will tint the diffuse texture.

  • Red
  • Green
  • Blue
  • Alpha
• Roughness

  Low values appear shiny or glossy, high values appear rough or matte.

  When a Roughness Texture is applied this value will multiply the roughness in the texture image (0.5 will decrease the roughness by 50%).

• Metallic

  Metallic makes the albedo factor in the reflection color.

  This setting reduces the brightness of the diffuse lighting component and increases the specular (as metals reflect a lot more light rather than absorb or scatter it).

  When a Metallic Texture is applied this value will multiply the metallicness in the texture image (0.5 will decrease the metallicness by 50%).

• Ambient Occlusion

  Ambient Occlusion is the brightness of the lighting from the environment map, both the image-based ambient and the reflection.

  When a Ambient Occlusion Texture is applied this value will multiply the ambient occlusion in the texture image (0.5 will decrease the ambient by 50%).

• Clearcoat Strength

  Clearcoat Strength is a value that acts as a multiplier on the visibility of the clearcoat effect. A value of 0 turns off the effect completely.

• Clearcoat Roughness

  Clearcoat Roughness is a value for a second roughness parameter used to replace the main roughness value for the clearcoat effect's specular reflection.

  When a Clearcoat Roughness Texture is applied this value will multiply the ambient occlusion in the texture image (0.5 will decrease the ambient by 50%).

• Refraction Properties
  • Refraction enabled

    Check to turn refraction on

    Enabling refraction will impact performance of the 3D scene.

  • Index Of Refraction

    Controls how much the light is refracted.

    A value of 1 will have no refraction and 1.5 is approximately like glass.

  • Chromatic Aberration

    How much the refraction effect splits the red/green/blue light towards a rainbow effect.

• Emissive Intensity

  This value is a multiplier for the Emissive Texture applied.

• Texture Offset
  • Offset X
  • Offset Y
• Texture Transforms
  • Scale X
  • Scale Y
  • Angle
• Diffuse Texture
  • Texture
  • Source File Path
• Roughness Texture
  • Texture
  • Source File Path
• Normal Texture
  • Texture
  • Source File Path
• Metallic Texture
  • Texture
  • Source File Path
• Ambient Occlusion Texture
  • Texture
  • Source File Path
• Emissive Texture
  • Texture
  • Source File Path
• Clearcoat Normal Texture
  • Texture
  • Source File Path
• Clearcoat Roughness Texture
  • Texture
  • Source File Path

Setting up an Appearance to use on the PBR Advanced render property

In each Appearance there is a property in the Information Panel called Render Properties.

1. In a DriveWorks 3D Document, navigate to and select an Appearance.
2. In the Information Panel select the Render Properties drop down.
3. Select PBR Advanced from the drop down list.

Using the PBR Advanced render property

Real world material appearances are best achieved by applying PBR texture images.

Many online resources offer free PBR texture downloads such as Poly Haven, Textures.com, Free PBR and cgbookcase.com.

The files downloaded from these sites will include various image files.

These will be suffixed with a name that corresponds to the following Texture properties:

• Diffuse Texture - use the file suffixed with _BaseColor or _Albedo or similar
• Roughness Texture - use the file suffixed with _Roughness or _NormRough or similar
• Normal Texture - use the file suffixed with _Normal
• Metallic Texture - use the file suffixed with _Metallic (will only be supplied for metallic materials)
• Ambient Occlusion Texture - use the file suffixed with _ao or _ambient or similar (not always supplied)

The lighting model, of the PBR Advanced render property, relies heavily on having an Environment Map applied to display realistic reflections.

Using a HDRI image will give the best results.

Once the images have been applied, finer adjustments can be made to the appearance using the properties found in the Albedo, Texture Offset and Texture Transforms groups of settings.

Other Render Properties

DriveWorks has other render properties available to use on an Appearance.

These add different levels of realism to an Appearance.

• Default
• Specular
• Bump
• Emissive Bump
• Reflective
• Glass
• PBR