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saltpro15

Thu Mar 26, 2009 6:06 pm


starting openGL

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Hey guys,

I've been using C++ with various environments (MSVC++, Dev C++, Notepad++, Bluefish + command line)
and I want to start doing 3d graphics.  I've heard the best way to do this is with openGL, now I know there's a good tut on this site for openGL, but I have a few questions
Right now I'm using Bluefish on Ubuntu, so where can I get glut for linux?
Will my programs still compile on Windows if i write them in Linux?
If 1 or 2 is a "no" then which Windows environment would you guys recommend? (MSVC++ or Dev C++)?

thanks, 
Drew


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Insectoid

Thu Mar 26, 2009 7:23 pm


RE:starting openGL

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I'd like this too, I want to try Ruby with OpenGL.


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DemonWasp

Thu Mar 26, 2009 7:34 pm


RE:starting openGL

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If you write in the portable subset of C++, you can get it to compile on both Windows and Linux. If you're careful, you can probably get OSX too. Cross-compiling is a chore, though, so be forewarned. You will need to compile for the target OS, which is probably best done ON that OS, with a compiler built for that platform.

No idea about GLUT though. My OpenGL stuff has all been through [url=http://jmonkeyengine.com/]JMonkeyEngine on [url=http://lwjgl.org/]LWJGL.

Does Ruby even *have* OpenGL bindings?


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rdrake

Thu Mar 26, 2009 7:40 pm


Re: starting openGL

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Right now I'm using Bluefish on Ubuntu, so where can I get glut for linux?You need freeglut-dev.  I believe it's this.

Will my programs still compile on Windows if i write them in Linux?Yes, before the GLUT and OpenGL include files you need to include the Windows API header.  The following (from memory) should do the trick.

#ifdef WIN32
#include "Windows.h"
#endif

#include 
#include 
That should include the Windows API header only if you're compiling under Windows.

If 1 or 2 is a "no" then which Windows environment would you guys recommend? (MSVC++ or Dev C++)?Personally I found Dev-C++ to be easiest on Windows.  You install the OpenGL/GLUT package for it from the package manager.


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wtd

Thu Mar 26, 2009 8:01 pm


Re: RE:starting openGL

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If you write in the portable subset of C++, you can get it to compile on both Windows and Linux. If you're careful, you can probably get OSX too. Cross-compiling is a chore, though, so be forewarned. You will need to compile for the target OS, which is probably best done ON that OS, with a compiler built for that platform.

No idea about GLUT though. My OpenGL stuff has all been through 

Most certainly yes.


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saltpro15

Thu Mar 26, 2009 8:06 pm


RE:starting openGL

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I decided to go with Dev C++, found the file for glut, installed it, ran some sample code and I'm getting linker errors, anyone know what I did wrong?


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DemonWasp

Thu Mar 26, 2009 8:55 pm


RE:starting openGL

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The libraries may not be on the LD_LIBRARY_PATH or similar. I'll assume you got the glut libraries through the repositories; can we see your linker errors?


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CodeMonkey2000

Thu Mar 26, 2009 10:00 pm


RE:starting openGL

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Are you new to graphical APIs? If you are then I wouldn't recommend jumping right into openGL. Begin with SDL first, it's simple, but it only does 2D. On the plus side you can use SDL with openGL instead of using GLUT.


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rdrake

Fri Mar 27, 2009 12:25 am


Re: RE:starting openGL

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I decided to go with Dev C++, found the file for glut, installed it, ran some sample code and I'm getting linker errors, anyone know what I did wrong?Chances are you didn't tell it the proper libraries to use.

[code]-lopengl -lglu -lglut -mwindows[/code]

I forget exactly now, haven't done any OpenGL in a while.


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saltpro15

Tue Mar 31, 2009 5:04 pm


RE:starting openGL

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got it, thanks rdrake