Question

I am starting learning OpenGL and I am not sure, how to set it up on (Ubuntu) Linux.

I think that this could be a way:

OpenGL is only a graphics language specification (or interface) and to properly use it I have to download some library (for the specific OS) that implements the OpenGL specification.

After long searching and from multiple sources I found that the Mesa 3D Graphics Library would be the best for me.

I also found the SDL (Simple DirectMedia Layer) library but it seems to be a library for all other things beside graphics (e.g. GUI, sound, keyboard and mouse input, ...). I need ONLY a graphics library, so that it will implement the OpenGL specification.

As a graphical user interface I use the Gtkmm library and I am "very satisfied" with it so far, so I would like to "connect" gtkmm with OpenGL - for that I found an extension to gtkmm library called gtkglextmm by means of which I should be able to draw the OpenGL animation to a window (or DrawingArea in Gtkmm jargon) in GUI (but I have not tried it yet so I hope it will work :-) ).

And the last problem is the cross compilation from Linux to Windows (with the MinGW cross compiler). So far, I have successfully cross compiled (from Linux to Windows) all my work done with the Gtkmm library.

When I combine it with OpenGL, won t it be any problem to cross compile it (e.g. do I need to link something special when compiling with the Gcc compiler, or should I distribute some Windows OpenGL library with my application)?

I would be very pleased I you confirmed that I am in the right direction or turned me in the right direction that I could done something easier or better way.

Answer 1

To some extent its graphics card dependent, the proprietary driver packs include their own libGL.so and also include the libGL.la (to link against the .so) and any relevant header files.

Nvidia - OpenGL libraries and headers are included in the proprietary driver package.
ATi FGLRX - OpenGL libraries and headers are included in the proprietary driver package.
Open Source Drivers - OpenGL libraries and headers are provided as a part of Mesa. Depending on your distribution you may need to install the *-devel packages to get the headers and linkable libraries you ll need.

If you re using an Intel or Matrox card, or you re running an ATi card with the rage, radeon or radeonhd driver you re using the Open Source drivers.

GLUT will be the shortest path to a working program. Otherwise you ll need to write the code to create the OpenGL context (OS specific) yourself.

If you re still having issues, let us know more about whats not working for you.

EDIT Here s some sample commands/code that might be relevant or useful.

GCC Compiling:

gcc -lGL glprogram.c -o glprogram

Includes:

#include <GL/gl.h>
#include <GL/glu.h>
#include <GL/glut.h>

Answer 2

It should all just work out of the box given the right packages.

That said, here is the relevant chunk of the Build-Depends: used to build the rgl package (which provides on OpenGL device for R) on Debian. As Ubuntu uses the same settings for their build of the package, you should really bet set:

libgl1-mesa-dev | libgl-dev, libglu1-mesa-dev | libglu-dev, 
libpng12-dev, libx11-dev, libxt-dev, x11proto-core-dev

The | means alternative, so you can use the mesa-based packages or ones matching your graphics card (like the various nvidia-* packages).

Just grab some OpenGPl examples from somewhere and try it.

Answer 3

You are going right direction. I used Eclipse CDT+ SDL + openGL for developing my app under Ubuntu Linux (I used this tutorial for setup: http://www.ferdychristant.com/blog/articles/DOMM-72MPPE) and then successfully compiled my app under Windows with Dev C++

Answer 4

I m not of much help in the Linux realm. And I m behind the times when it comes to OpenGL. However, it looks like NeHe has a new set of tutorials where they re putting together some nice base code.

As they say on the site:

When writing the new tutorials we have several goals:

Write using a clean, simple and consistent coding standard

Write using modern C++

Remain totally cross-platform (that is OpenGL s strength after all)

Inspire people to submit their own lessons based on our basecode

So I d highly recommend at least giving their code a try. NeHe has a long standing tradition of creating some very nice tutorials.

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