[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 #2 from cand at gmx.com ---
Before the binutils and simulator support exist, can't write the baseline
simple-v code and so see which new instrs would be of most use. Otherwise it's
just guesses, though I mentioned saturated math way back already. Or are you
asking which parts of VSX are useful and which aren't?

The pixel VSX type is very rarely used. Personally I've never used it. Hardly
anybody uses 16-bit color spaces nowadays, outputs are 24 (8-8-8) or even
higher like 30 bit (10-10-10). It may not even have much use for textures, when
a game needs to save bw it probably uses 5-6-5, 8-8 or fp16, not 5-5-5-1.

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