You might have more luck with Loki's SDL, especially as there are Perl bindings
available from the CPAN.
(Now under Unix, writing to devices is a lot easier as they appear to be files in the filesystem, but writing actual drivers for speed-intensive hardware like a 3d card in Perl strikes me as a sign of too much free time. :)
Update: merlyn has just pointed out the shiny new Inline module, which may get you closer to writing drivers in Perl.
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