Back-face culling

Updated: 04/26/2017 by Computer Hope

back-face cullingBack-face culling is a method in computer graphics programming which determines whether a polygon of a graphical object is visible; if it is not, the polygon is "culled" from rendering process, which increases efficiency by reducing the number of polygons that the hardware has to draw.

The vertices of front-facing polygons wind in a clockwise fashion, so polygons that face away from the camera are in a counter-clockwise order relative to the current view. When back-faces are culled, these polygons are not drawn.

Note: The process is similar to clipping, which determines if polygons are within the camera's field of view at all, and if not, are not rendered.

Computer graphic, Programming terms