Michael Jones (mtj++at++babar)
Thu, 27 Apr 1995 07:06:44 -0700
:Basically, within a Performer draw callback, I use lrectread
:to get the contents of the framebuffer area being used by the
:current gl window, and save that to a file. [...]
:Anyway, I've always (rather naively perhaps) assumed that this
:would be supplied as an option through the Performer API
:eventually.
Take a look at "snapwin.c" in the pfutil library. Also, check
out the 'x' key in perfly -- it uses the functions in snapwin.c
to write the screen image to a named file. The functions are
also listed in your IRIS Performer Reference Card.
:Could someone clear up exactly what will be available
:through Performer 2.0 in this respect.
We added the ability to snapshot either RGB or RGBA to
snapwin.c but did not make these features an integral part
of IRIS Performer. I'd presumed that the sources would be
enough "documentation", but perhaps we need to add a
description of the pfutil code to the Programmer's Guide so
that people will know what features are there.
Michael Jones
--Be seeing you, Phone:415.390.1455 Fax:415.965.2658 M/S:8U-590 Michael T. Jones Silicon Graphics, Advanced Graphics Division mtj++at++sgi.com 2011 N. Shoreline Blvd., Mtn. View, CA 94039-7311
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