Crash in glGenTextures()

SDL Development
1

I’m getting a crash (signal 11) when calling glGenTextures(1, &nTexture)
in Windows, but not in Linux.

All I could find in the net says “make sure you have a valid OpenGL
context before calling glGenTextures()”. I assume SDL does that for me,
right? I’ve already set the video mode with no errors.

I tried forcing the windib driver and I still get the crash.

For some reason, several previous calls to glGenTextures() succeed, but
this one crashes.

I’m at a complete loss. Does anyone have an interesting theory?

Thanks,
–Gabriel

2

Heya Gabriel,

I had a similar problem once, it turned out my drivers were bad (ie had
bugs) but i was using a voodoo which was out of business so no new updates
were coming out to fix the patch.

what kind of video card do you have?> ----- Original Message -----

From: mystml@adinet.com.uy (Gabriel Gambetta)
To: “SDL Mailing List”
Sent: Sunday, August 21, 2005 6:15 PM
Subject: [SDL] Crash in glGenTextures()

I’m getting a crash (signal 11) when calling glGenTextures(1, &nTexture)
in Windows, but not in Linux.

All I could find in the net says “make sure you have a valid OpenGL
context before calling glGenTextures()”. I assume SDL does that for me,
right? I’ve already set the video mode with no errors.

I tried forcing the windib driver and I still get the crash.

For some reason, several previous calls to glGenTextures() succeed, but
this one crashes.

I’m at a complete loss. Does anyone have an interesting theory?

Thanks,
–Gabriel

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SDL at libsdl.org
http://www.libsdl.org/mailman/listinfo/sdl

3

El dom, 21-08-2005 a las 23:41 -0700, Alan Wolfe escribi?:

Heya Gabriel,
I had a similar problem once, it turned out my drivers were bad (ie had
bugs) but i was using a voodoo which was out of business so no new updates
were coming out to fix the patch.
what kind of video card do you have?

I found the problem. The video card is a GeForce4 MX but didn’t have the
nVidia drivers, so it was running the Windows GDI OpenGL implementation,
which seems to be buggy. I was allocating a couple of 32x2048 textures,
which could fail, but shouldn’t have crashed.

Thanks,
–Gabriel