[Libre-soc-bugs] [Bug 230] Video opcode development and discussion

[bugzilla-daemon at libre-soc.org]

https://bugs.libre-soc.org/show_bug.cgi?id=230

--- Comment #43 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to cand from comment #39)
> There's basically two types of variable bit width data: pixel formats like
> 5-6-5 and compressed data ala Huffman. The former is rare, and the latter
> would need sequential parsing to know their lengths, aka no point in
> vectorizing that. So I don't think variable shift/mask amounts per-element
> are necessary (but do point out if there's some use I missed).

We will need variable shift-left/bitwise-shift-right/arithmetic-shift-right and
maybe rotates too for GPU applications, so since we will already have them, you
might as well use them.

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