Re: [GtkGLExt] Is it a bug of gtkglext?

[明覺 <shi minjue gmail com>]

On Fri, May 15, 2009 at 2:35 PM, Braden McDaniel <braden endoframe com> wrote:
> On Fri, 2009-05-15 at 11:58 +0800, 明覺 wrote:
>> On Wed, May 13, 2009 at 11:14 PM, Braden McDaniel <braden endoframe com> wrote:
>> > On Wed, 2009-05-13 at 15:09 +0800, 明覺 wrote:
>> >> I compiled  the example gtkglextmm program gears.cc(attached)
>> >
>> > There's no reason to attach source code that is part of the GtkGLExt
>> > distribtion to mailing list messages.  We know where to find it. :-)
>> >
>> >>  to
>> >> a.out, it can start and display successfully, but if i resize the
>> >> window, a segmentation fault error will occur, here is the error info
>> >> from valgrind. any advice to solve it? thanks
>> >
>> > The actual failure is happening inside of Mesa (presumably) code.
>> > glXWaitX isn't reasonably close to line 659 in trunk Mesa; so you'll
>> > need to track this down in the source to whatever version you're using.
>> >
>> > You should probably try turning up the verbosity in valgrind to see if
>> > it will tell you *what* value was uninitialized; though looking at the
>> > right line 659 might make that apparent.
>>
>> thank you for the information, here is the ouput of valgrind, how
>> could i solve it? and someone said that it's caused by video driver
>> error, is that possible?
>
> As I suggest above, inspect the source for whatever version of Mesa
> you're using.  Find the variable that valgrind is claiming is
> uninitialized.

I'm using the mesa from its git, that the latest code,(I also used
7.4, 7.5 and 7.6 of mesa, all the similar error), the variable not
uninitialized should be psc->driScreen->waitX
in line 659 of glxcmds.c 	    if (psc->driScreen->waitX != NULL)
any advice? thanks

>
> --
> Braden McDaniel <braden endoframe com>
>
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