https://bugs.freedesktop.org/show_bug.cgi?id=97957
--- Comment #16 from Thomas Hellström <thellst...@vmware.com> ---
(In reply to Fredrik Höglund from comment #15)
> (In reply to Thomas Hellström from comment #13)
> > It sounds to me like a back- to back SwapBuffers() is an application bug.
> > The back buffer content is undefined after a SwapBuffers().
>
> It is not undefined when the implementation supports EXT_buffer_age.
Well it may be for some buffers. Whether or not the app uses EXT_buffer_age
correctly in this case doesn't really matter as there are apps out there that
most certainly don't. Perhaps we can use a driconf option for such apps to
restrict available swap methods.
But most importantly there is a mesa dri3 bug here. And looking closer at the
code the glx/dri implementation of GLX_OML_swap_method appears utterly broken,
so it will take some time to fix.
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