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   11362 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

GLPIXELZOOM(3G)						       GLPIXELZOOM(3G)

NAME
       glPixelZoom - specify the pixel zoom factors

C SPECIFICATION
       void glPixelZoom( GLfloat xfactor,
	    GLfloat yfactor )

       delim $$

PARAMETERS
       xfactor, yfactor
	      Specify the $x$ and $y$ zoom factors for pixel write operations.

DESCRIPTION
       glPixelZoom specifies values for the $x$ and $y$ zoom factors.  During
       the execution of glDrawPixels or glCopyPixels, if ($xr $, $yr $) is the
       current raster position, and a given element is in the $m$th row and
       $n$th column of the pixel rectangle, then pixels whose centers are in
       the rectangle with corners at

       ($xr ~+~ n cdot "xfactor"$, $yr ~+~ m cdot "yfactor"$)

       ($xr ~+~ (n+1) cdot "xfactor"$, $yr ~+~ (m+1) cdot "yfactor"$)

       are candidates for replacement.	Any pixel whose center lies on the
       bottom or left edge of this rectangular region is also modified.

       Pixel zoom factors are not limited to positive values.  Negative zoom
       factors reflect the resulting image about the current raster position.

ERRORS
       GL_INVALID_OPERATION is generated if glPixelZoom is executed between
       the execution of glBegin and the corresponding execution of glEnd.

ASSOCIATED GETS
       glGet with argument GL_ZOOM_X
       glGet with argument GL_ZOOM_Y

SEE ALSO
       glCopyPixels(3G), glDrawPixels(3G)

								 March 1, 2011

Vote for polarhome