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GtkGLArea
---------
AUTHOR
------
Janne Lf <jlof@mail.student.oulu.fi>
CONTRIBUTORS
------------
Karl Nelson <kenelson@ece.ucdavis.edu> (original autoconf, gtkglarea--)
Daniel Skarda <0rfelyus@atrey.karlin.mff.cuni.cz> (original automake & libtool)
Jussi Lf <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. Makefiles are supplied only for
gcc compilation (for mingw), sorry. But it shouldn't be hard to build
this with MSVC, either.
You will of course need win32 gtk+ packages, too:
glib-dev-*.zip
gtk+-dev-*.zip
(insert latest timestamp in place of the *)
you can get these from http://www.iki.fi/tml/gimp/win32/ installation
instructions (README.win32) are not as long as they usedf to be
earlier. It should be simpler now to get a correct gcc setup. You
will also want to have cygwin installed, for instance the DLLs are
built with a shell script.
OpenlGL headers are also needed, either use those from the
PlatformSDK (freely downloadable from Microsoft, even if you have to
use a complex installer program, and it's hard to decide which of the
zillion optional parts you actually want to get these headers), or
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 the OPENGL definition in the build/win32/module.defs file
to point to the directory where you have the GL subdirectory with
OpenGL headers (gl.h, glaux.h and glu.h). Now you should be all set
to compile. Go to the gtkgl directory, and do:
make -f makefile.mingw
This should produce gtkgl-<VERSION>.dll and libgtkgl-<VERSION>.a, and
perhaps gtkgl-<VERSION>.lib, where <VERSION> will be replaced by the
version number of GtkGLArea. Move the dll to some directory in your
PATH, or keep a copy of it in the same directory as the executable
that will use it. The .lib file (import library for MSVC) is produced
only if you have the Microsoft linker, link, available.
Then go to the examples directory, and do a make there, too. This
should produce three examples: simple.exe, viewlw.exe and
zktor.exe. The Windows version of viewlw is a bit shaky but should
show the sample *.lwo objects if their file names are given on the
command line. The 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
----
- rewrite documentation in texinfo format
- weed out bugs from autoconfigure scripts
- overlays
- add more functionality to windows port
---
Trademarks are owned by trademark owners.
|
