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Subsurface Parameters | Substance 3D Painter

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Substance 3D Painter

Substance 3D Painter

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    4. Subsurface Scattering
      1. Subsurface Scattering overview
      2. Enabling Subsurface in a Project
      3. Subsurface Parameters
      4. Subsurface Material Type
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  10. Technical Support
    1. Performance Guidelines
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    3. Exporting the log file
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    5. Technical issues
      1. GPU Issues
        1. Crash when working with overclocked GPU
        2. Forcing the external GPU on Mac OS
        3. GPU drivers compatibility
        4. GPU drivers crash with long computations (TDR crash)
        5. GPU has outdated drivers
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        7. GPU is not recognized and is mentionned as GDI Generic
        8. Issues with Nvidia GPUs on recent Mac OS versions
        9. Multi/Bi-GPU
        10. Running on integrated GPU
        11. Painter doesn't start on the right GPU
      2. Startup Issues
        1. Application failed to start because of Qt
        2. Crash or freeze during startup
        3. Software conflicts
      3. Rendering Issues
        1. Artifacts and glitches on Mac OS with Custom GPUs
        2. Blocky artifacts appear on textures in the viewport
        3. Mesh appears pink in the viewport
        4. Mesh flash to white when moving camera
        5. Some HDPI scaling values are not working
      4. Stability Issues
        1. Crash during export
        2. Crash when opening or saving a file
        3. Crash while baking
        4. Crash with low virtual memory
        5. Windows Blue Screens
      5. Miscellaneous Issues
        1. Corrupted texture error message
        2. Shelf resources are gone after 7.2 update
        3. Error there is no disk in the drive
        4. Error with missing api-ms-crt dll
        5. Impossible to drag and drop files into the shelf
        6. Impossible to use the ALT keyboard shortcut on Linux
        7. Assets (or shelf) previews are empty
    6. Workflow Issues
      1. Export Issues
        1. My exported opacity map is totally black
        2. Texture dilation or Padding
      2. Tools Issues
        1. Normal map looks incorrect when loaded in layer or tool properties
        2. Paint Tool bleeds on other UV islands
      3. Project Issues
        1. A project has been processed as a text file and is now corrupted
        2. Loading files from a network
        3. Preserve brush strokes setting stays disabled
        4. Projects are really big
      4. Library Issues
        1. Thumbnails in the shelf look incorrect
        2. Error when importing a Font
      5. Viewport Issues
        1. Mesh faces disappear when looking at them from behind
        2. Viewports and textures are blurry or lack sharpness
      6. Plugins Issues
        1. Substance Source plugin doesn't load
      7. License Issues
        1. Maintenance is expired dialog on startup
  11. Pipeline and integration
    1. Installation and preferences
      1. Preferences and application data location
      2. Automated installation
      3. Retrieving the installation path
    2. Configuration
      1. Command lines
      2. Environment variables
      3. Firewall Configuration
      4. Querying Current Software Version
      5. Remote Desktop
    3. Resource management
      1. Shelf and Assets location
      2. Resource paths
        1. Adding resource paths by editing preferences manually
        2. Editing resource paths manually
        3. Editing the Shelf Preferences with Python
      3. Adding saved searches manually
      4. Preferences and content migration
      5. Excluding resources in a resource path
  12. Scripting and development
    1. Scripts and plugins
      1. Creating a Javascript plugin
      2. Remote control with scripting
    2. Shader API Reference
      1. Shader API overview
      2. Changelog - Shader API
      3. Libraries - Shader API
        1. Lib Alpha - Shader API
        2. Lib Bayer - Shader API
        3. Lib Defines - Shader API
        4. Lib Emissive - Shader API
        5. Lib Env - Shader API
        6. Lib Normal - Shader API
        7. Lib PBR - Shader API
        8. Lib PBR Aniso - Shader API
        9. Lib Pom - Shader API
        10. Lib Random - Shader API
        11. Lib Sampler - Shader API
        12. Lib Sparse - Shader API
        13. Lib SSS - Shader API
        14. Lib Utils - Shader API
        15. Lib Vectors - Shader API
      4. Parameters - Shader API
        1. All Custom Params - Shader API
        2. All Engine Params - Shader API
        3. All Rendering States Params - Shader API
        4. Layering Bind Materials - Shader API
        5. Layering Declare Stacks - Shader API
      5. Shaders - Shader API
        1. PBR Material Layering - Shader API
        2. PBR Metal Rough - Shader API
        3. Pixelated - Shader API
        4. Surface Shader - Shader API
        5. Toon - Shader API
  13. Release notes
    1. Release notes overview
    2. All Changes
    3. Version 10.1
    4. Version 10.0
    5. Version 9.1
    6. Old versions
      1. Version 9.0
      2. Version 8.3
      3. Version 8.2
      4. Version 8.1
      5. Version 7.4
      6. Version 7.3
      7. Version 7.2
      8. Version 2021.1 (7.1.0)
      9. Version 2020.2 (6.2.0)
      10. Version 2020.1 (6.1.0)
      11. Version 2019.3
      12. Version 2019.2
      13. Version 2019.1
      14. Version 2018.3
      15. Version 2018.2
      16. Version 2018.1
      17. Version 2017.4
      18. Version 2017.3
      19. Version 2017.2
      20. Version 2017.1
      21. Version 2.6
      22. Version 2.5
      23. Version 2.4
      24. Version 2.3
      25. Version 2.2

Subsurface Parameters

Substance 3D Painter real-time subsurface implementation is a screen-space subsurface scattering effect. The parameters to control it are explained in this page.
The current implementation is based on the "Approximate Reflectance Profiles for Efficient Subsurface Scattering" method published by PIXAR.

For examples of materials based on these parameters, see: Subsurface Material Type.

Shader/MDL Parameters

Available in the Shader settings window.

Setting

Description

Enable

Activate or Deactivate the Subsurface Scattering effect on this shader/mdl instance.
Can be used to disable the SSS effect on material that don't need it.

Scattering Type

Defines the behavior of the light absorption in the material:

  • Translucent: suited for generic materials such as Jade or Marble where light can penetrate deeply into an object.
  • Skin: suited for organic skin, where light is absorbed quickly and only scatter near the surface.
  • Red Shift/Rayleigh: more accurate than the skin setting to simulate human or creature surface skin.

Scale

Controls the radius/depth of the light absorption in the material. This parameter behavior change depending of the size of the mesh in the scene.

Comparison between a scale of 0.0, 0.2 and 1.0 on a human sized head:

Color

The color of light when absorbed by the material.

Comparison between three colors :

Display Settings Parameters

Available in the Display settings window.

Note:
This parameter only affect the realtime version of the subsurface scattering effect.

Setting

Description

Sample Count

Controls the amount of samples that will be performed to generate the Subsurface blur in screen-space. More samples means less noise but will impact performances.

Comparison between 8, 32 and 64 samples when looking close to a surface :

Note:
The amount of noise can also be reduced by enabling Camera settings without increasing the amount of samples.

 Adobe

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