glXGetFBConfigs() return value

[Ian Romanick]

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Tomas Carnecky wrote:
> It returns 'GLXFBConfig *', but 'GLXFBConfig' is typedef'd to a pointer
> to __GLXFBConfigRec, so glXGetFBConfigs() returns a list of pointers to
> __GLXFBConfigRec. But, with my binary nvidia driver, the list doesn't
> contain actual pointers, but GLXFBConfigID's (0xa1 isn't a valid
> pointer, and I have a visual with GLX_FBCONFIG_ID=0xa1).
> Now if I get the list from glXGetFBConfigs(), am I allowed to make a
> local copy of a GLXFBConfig and keep it even after I XFree() the list? A
> small piece of code will explain better what I want to do:
> 
> GLXFBConfig *list = glXGetFBConfigs(...);
> GLXFBConfig copy = list[0];
> XFree(list);
> glXGetFBConfigAttrib(.., copy, ..);

Yeah, this code should be fine.

> Will that work on all drivers, and not just the binary nvidia?

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