debugging an OpenGL app

MathFan · 07-08-2004, 10:22 AM

hi guys...
I have always wondered how to debug say an OpenGL or a SDL app. 'Cause what I experience every time I try to debug my game is that the debugger (i've tried both the native KDevelop debugger and kdbg) just runs the app until it crashes and I'm not able to use any of the useful functions like step in, step out, watch etc.

There is probably a very easy solution... so, ehh can anyone help me?

Oh, yes. there is one more thing. if i have a class in my code named glWorld. then i declare glWorld World=new glWorld(); how can I add a watch on some variable inside World now? I've tried World::var and World->var and so on, but it doesn't seem to work.

thnx

linuxdude · 07-08-2004, 02:32 PM

the same way you debug any other program. Do you know how to use gdb? I can't answer your second question I only program in C right now.

MathFan · 07-09-2004, 07:15 AM

Well, no I haven't used gdb, but I'll try it. thnx

But: r u sure it's that simple? u don't need to specify what libraries executable uses or anything?

and what if my game is running fullscreen?

linuxdude · 07-09-2004, 04:30 PM

gdb tells you were your program goes arrai(I know that is wrong) It tells you what function or whatever screws with your memory. It doesn't matter what libraries. If all else fails post the code here.

MathFan · 07-10-2004, 04:11 AM

Thanx, I've got it working all right now...

linuxdude · 07-10-2004, 03:42 PM

what was wrong? Could you tell us?

07-08-2004, 10:22 AM	#1
MathFan Registered User Join Date: Apr 2002 Posts: 185	debugging an OpenGL app hi guys... I have always wondered how to debug say an OpenGL or a SDL app. 'Cause what I experience every time I try to debug my game is that the debugger (i've tried both the native KDevelop debugger and kdbg) just runs the app until it crashes and I'm not able to use any of the useful functions like step in, step out, watch etc. There is probably a very easy solution... so, ehh can anyone help me? Oh, yes. there is one more thing. if i have a class in my code named glWorld. then i declare glWorld World=new glWorld(); how can I add a watch on some variable inside World now? I've tried World::var and World->var and so on, but it doesn't seem to work. thnx __________________ The OS requirements were Windows Vista Ultimate or better, so we used Linux.
MathFan is offline

07-08-2004, 02:32 PM	#2
linuxdude Registered User Join Date: Mar 2003 Location: Louisiana Posts: 926	the same way you debug any other program. Do you know how to use gdb? I can't answer your second question I only program in C right now.
linuxdude is offline

07-09-2004, 07:15 AM	#3
MathFan Registered User Join Date: Apr 2002 Posts: 185	Well, no I haven't used gdb, but I'll try it. thnx But: r u sure it's that simple? u don't need to specify what libraries executable uses or anything? and what if my game is running fullscreen? __________________ The OS requirements were Windows Vista Ultimate or better, so we used Linux. Last edited by MathFan; 07-09-2004 at 07:20 AM.
MathFan is offline

07-09-2004, 04:30 PM	#4
linuxdude Registered User Join Date: Mar 2003 Location: Louisiana Posts: 926	gdb tells you were your program goes arrai(I know that is wrong) It tells you what function or whatever screws with your memory. It doesn't matter what libraries. If all else fails post the code here.
linuxdude is offline

07-10-2004, 04:11 AM	#5
MathFan Registered User Join Date: Apr 2002 Posts: 185	Thanx, I've got it working all right now... __________________ The OS requirements were Windows Vista Ultimate or better, so we used Linux.
MathFan is offline

07-10-2004, 03:42 PM	#6
linuxdude Registered User Join Date: Mar 2003 Location: Louisiana Posts: 926	what was wrong? Could you tell us?
linuxdude is offline

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