GtkGLArea
---------
AUTHOR
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Janne Löf <jlof@mail.student.oulu.fi>
CONTRIBUTORS
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Karl Nelson <kenelson@ece.ucdavis.edu> (original autoconf, gtkglarea--)
Daniel Skarda <0rfelyus@atrey.karlin.mff.cuni.cz> (original automake & libtool)
Jussi Löf <jussi.lof@pirko.fi> (LightWave objects)
Andrew Marriott <raytrace@lillee.cs.curtin.edu.au> (original win32 port)
Chris Abernethy <chris65536@home.com> (gtkglarea_demo.c)
LICENSE
-------
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
INTRODUCTION
------------
GtkGLArea is an OpenGL widget for GTK+ GUI toolkit.
Just as GTK+ is build on top of GDK, GtkGLArea is built on top of gdkgl which
is basically wrapper around GLX functions. The widget itself is derived
from GtkDrawinigArea widget and adds only few extra functions.
Lower level gdkgl functions make it easy to render on any widget that has
OpenGL capable visual, rendering to off-screen pixmaps is also supported.
Related project which may iterest those who use GTK-- is GtkGLArea--. It is a
C++ wrapper for gtkglarea written by Karl Nelson <kenelson@ece.ucdavis.edu>.
INSTALLATION
------------
You need GTK+ and either OpenGL or Mesa, if you have both you can choose which
one to use by giving --with-lib-GL or --with-lib-MesaGL option to configure.
Run './configure --help' to see all options you may give at configuration stage.
Run './configure' and 'make' to build. You may now test programs in examples
directory. Run 'make install' to install.
Include files go to PREFIX/include/gtkgl/
Library files go to PREFIX/lib/
WIN32
-----
There is now a working windows port. autoconfig is not used, but you probably
don't want to use it anyway. It has only been tested with mingw32.
You will of course need win32 gtk+ packages in addition to mingw32.
glib-dev-19991218.zip
gtk+-dev-20000104.zip
extralibs-dev-19991218.zip
you can get these from http://www.iki.fi/tml/gimp/win32/ installation
instructions (README.win32) are long and complicated, but you can
ingnore about half of them (I did).
OpenlGL headers and (dev) libraries for mingw32 are also needed, grab
Mingw32_OpenGL.zip
from ftp://ftp.teleport.com/pub/users/pgarceau/
or alternatively you may use
glut-cygwin.zip
from http://www.cim.pe.u-tokyo.ac.jp/~kawachi/software/cygwin_glut-e.html
Unzip these packages to some directory, then modify GTKDIR and OGLDIR
in makefile.cygwin to point to correct directories. Now you should be all
set to compile with
make -f makefile.cygwin
This should produce libgtkgl.a in gtkgl directory and two examples simple.exe
and viewlw.exe in examples directory. Windows version of viewlw is a bit shaky
but should show example *.lwo objects if their file names are given from
command line. Other examples do not compile at this time. (Pixmaps and fonts are
unsupported in win32).
Inner workings of win32 gtkglarea is quite different form glx version, therefore
you should only use GtkGLArea widget (gtk_gl_*) functions, no gdk_gl_* functions.
DOCUMENTATION
-------------
Documentation is slightly out of date, sorry.
docs/gtkglarea.txt documents GtkGLArea widget (needs updating)
docs/gtkgl.txt documents gtk_gl_* functions (needs updating)
docs/HOWTO.txt good advice
LINKS
-----
GtkGLArea home page http://www.student.oulu.fi/~jlof/gtkglarea/
Gtk-- wrapper http://www.ece.ucdavis.edu/~kenelson/gtk-glarea/
TODO
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- rewrite documentation in texinfo format
- weed out bugs from autoconfigure scripts
- overlays
- add more functionality to windows port
---
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