Silhouettes

Rendering silhouettes

The AVEVA™ XR engine can automatically render silhouettes around the meshes.

Each Silhouette can have its own color and alpha value.

Silhouettes are enabled when one of the following render pipelines are enabled:

• Default pipeline

• DOF HDR B

Only 'simple' meshes are supported. There is no clipmap support.

How to

• Silhouettes are enabled from the config file: silhouettes à enable.

• There are no export parameters to enable the silhouettes on the meshes because the application code does this.

Anti-aliasing options

Silhouettes support two custom forms of anti-aliasing that can be enabled from the configuration file.

These anti-aliasing options are independent from the engine's other anti-aliasing parameters.

The available anti-aliasing options are:

• FXAA

  • Enable this by setting the configuration file parameter silhouettes à antialiasingType to FXAA.

  • This is based on a double pass of FXAA.. Once for the colors; again for the alpha channel.

• SMAA

  • Enable this by setting the configuration file parameter silhouettes à antialiasingType to SMAA.

  • This is based on a single pass of SMAA.

• None

  • Set the configuration file parameter silhouettes à antialiasingType to None.

Size

• The size of the silhouettes can be modified through the config file parameter: silhouettes à size

• Only the values 1 and 2 are supported. 1 is standard size, 2 is twice that.

• The size of the silhouettes does not depend from the size of the screen, so if the silhouette is N pixels at 640×480, it is also N pixels at 1920×1280.

Limitations

The engine can render any number of silhouettes, but if the number is more than 255 some blend between nearby silhouettes may appear.