NAME

DoSampleSuper − Create a supersampling camera attribute object for antialiasing

SYNOPSIS

C:

DtObject DoSampleSuper(xsamples, ysamples)
DtInt xsamples;
DtInt ysamples;

FORTRAN:

INTEGER∗4 DOSSPR(XSAMP, YSAMP)
INTEGER∗4 XSAMP
INTEGER∗4 YSAMP

DESCRIPTION

DoSampleSuper creates a supersampling camera attribute object for antialiasing. 

Supersampling means that each pixel of an image is subdivided into subpixels, and a shade is computed for each of the subpixels.  A filter is then applied to the shades of the subpixels to obtain the final pixel value. 

The parameters xsamples and ysamples specify how to divide each pixel into subpixels.  For example, DoSampleSuper(2, 3) would mean sample the pixel twice in the x direction, and three times in the y direction, resulting in 6 subpixels. 

Pixels will not be subdivided unless the supersampling switch is turned on. 

ERRORS

DoSampleSuper will fail if xsamples or ysamples is smaller than 1. 

[ERROR - value out of range]

DEFAULTS

The default DoSampleSuper is (2, 2). 

SEE ALSO

DoSampleSuperSwitch(3D), DoSampleFilter(3D) DoLocalAntiAliasStyle(3D), DoLocalAntiAliasSwitch(3D)

September 02, 1992