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<H1>[Mageia-dev] Clanlib2 and SSE2 on i586</H1>
<B>Jose Jorge</B>
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TITLE="[Mageia-dev] Clanlib2 and SSE2 on i586">lists.jjorge at free.fr
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<I>Tue Dec 4 19:00:17 CET 2012</I>
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<PRE>Le 04/12/2012 13:21, Pascal Terjan a écrit :
><i> On Tue, Dec 4, 2012 at 12:10 PM, AL13N<<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">alien at rmail.be</A>> wrote:
</I>>>><i> The code should really be complied but only enabled at runtime if it's
</I>>>><i> available. PulseAudio does this. It's more of a pain to code for but
</I>>>><i> does make like easier for distributions.
</I>>>><i>
</I>>>><i> But yeah, short term fix, nuke the test, and as a meme says, keep calm
</I>>>><i> and carry on.
</I>
It is not only a test, it is a crash.
>><i>
</I>>><i> but, do ALL recent i586 CPU's have SSE2? what about the embedded and VIA
</I>>><i> cpu's and the likes?
</I>
<A HREF="http://en.wikipedia.org/wiki/SSE2#CPUs_supporting_SSE2">http://en.wikipedia.org/wiki/SSE2#CPUs_supporting_SSE2</A>
><i>
</I>><i> The test is that it refuses to run if the lib is not using sse2 while
</I>><i> it could (slowly).
</I>><i>
</I>><i> The clanSWRender lib needs to be fixed to have sse2 support on sse2
</I>><i> system and not on non sse2 systems so that we can enable it but that's
</I>><i> something unrelated to dropping this test.
</I>
No, the clanSWRender has only a SSE2 implementation because no one wants
to write a SW render which is too slow.
<A HREF="http://lists.debian.org/debian-devel-games/2012/03/msg00076.html">http://lists.debian.org/debian-devel-games/2012/03/msg00076.html</A>
I wonder if we could enable for now SSE2, till upstream/somebody has a
better fix : for now, all SSE2 cpus crash. Enabling SSE2 it will only
crash on non-SSE2 cpus (older than 10 years)
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