https://bugs.freedesktop.org/show_bug.cgi?id=97957
--- Comment #13 from Thomas Hellström <thellst...@vmware.com> ---
It sounds to me like a back- to back SwapBuffers() is an application bug. The
back buffer content is undefined after a SwapBuffers().
But we shouldn't present a back buffer that's already in the swap chain. Hence
the attached patch.
Also, we should perhaps considering implementing and advertizing
GLX_SWAP_COPY_OML and GLX_SWAP_EXCHANGE_OML on dri3. There seems to be apps
relying on the GLX_SWAP_COPY_OML behavior. Among others glretrace playing back
traces captured on WGL.
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