Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   31559 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

displa(3G)							    displa(3G)

NAME
     displa - specifies a displacement for the z values of rendered polygons

FORTRAN 77 SPECIFICATION
     subroutine displa(scalefactor)
     real*4 scalefactor

DESCRIPTION
     displa offsets the z values of rendered pixels for polygons.  The term
     scalefactor*max(abs(dz/dx),abs(dz/dy)) is added to the z values of
     rendered pixels, where dz/dx and dz/dy are the slopes of the triangle in
     window coordinates.  scalefactor is a signed float value.	displa is
     effectively disabled by setting scalefactor to 0.0, which is the default.

     displa is recommended when rendering a z buffer that is later defined
     (see texdef) as a texture for generating shadows.	It can also be used to
     offset polygons so that lines drawn around their borders do not intersect
     them.  This technique can be used to support hidden line drawing and
     outlined facets.

NOTES
     IRIS-4D G, GT, GTX, VGX, and VGXT models and the Personal Iris do not
     support this function.

SEE ALSO
     texdef

									Page 1

Vote for polarhome