glXChooseFBConfigSGIX

[skynet]

Hello!

I´ m using

int fbconfigID=-1;
rval=glXGetFBConfigAttribSGIX(display, fbconfigs[0], GLX_FBCONFIG_ID_SGIX, &fbconfigID);

in order to get the ID of the given fbconfig ( I get back '85', for a floating point pbuffer). At a later point I use

 int fbAttribs[4]={GLX_FBCONFIG_ID_SGIX, fbconfigID, 0,0};
	int num_formats=0;
	GLXFBConfigSGIX *fbconfigs=glXChooseFBConfigSGIX(display, screen, &fbAttribs[0],  &num_formats);]

in order to retrieve the corresponding fbconfig back. Unfortunately I get back a NULL pointer, indicating that a fbconfig of this ID doesn´ t exist. What is going on here? Why isn´ t that working?

I´ m using a Geforce6800GT with newest drivers on Suse Linux 9.0

[idr]

In your code snippet you use chosenformat when you get the FBconfig ID, but fbconfigID when you use it. Is that what's actually in your code?

[skynet]

Sorry for confusing you. I actually c&p´ed the snippet out of my code. To answer your question, the correct ID will be used in both cases. I´ll try to edit my post accordingly.