NAME

DoBackfaceCullable − Create a primitive attribute object defining backface cullability

SYNOPSIS

C:

DtObject DoBackfaceCullable(switchvalue)
DtSwitch switchvalue;

Fortran:

INTEGER∗4 DOBFC(SWVAL)
INTEGER∗4 SWVAL

DESCRIPTION

DoBackfaceCullable creates a backface cullability primitive attribute object.  Backface cullability is a surface property of a primitive object.  The switchvalue parameter specifies whether a primitive object will render more efficiently if its backward facing surfaces are ignored before shading and rendering takes place.  The actual backface culling cannot take place until the DoBackfaceCullSwitch <DOBFCS> is enabled. 

DEFAULTS

The default value for DoBackfaceCullable is DcOff <DCOFF>. 

SEE ALSO

DoBackfaceCullSwitch(3D), DoHiddenSurfSwitch(3D)

September 29, 2021