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This procedure is called right before the Pre Geo Mel script attribute of related geometry attribute nodes is called. The parameters passed to this procedure are:

 

ParameterDescription
string $render_pass

The render pass node name

string $geometry_name

The name of the geometric object about to be output

string $visible_lights[]

The list of renderable, visible light shapes.

int $is_shadowThis parameter is set to `1' when this procedure is called during a shadow map rendering. It is set to `0' when called during a regular frame rendering. It can also be set to `-1' when it is called outside of a Frame Begin / End block. Currently this can only happen when outputting geometry instances connected to a particle instancer.
string $geo_attrib_nodes[]

The list of geometry attribute nodes that are either connected or inherited by the current object.

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