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pixfmt_conv.c: R12L->{RGB, RGBA} SIMD implementations #392

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pixfmt_conv.c: R12L->{RGB, RGBA} SIMD implementations #392

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Commits on Jun 7, 2024

  1. pixfmt_conv.c R12LtoRGB implementation in SIMD 

    - added the -msse4.1 flag to tools/Makefile
- 9 ms -> 5 ms on my machine
    @xsebela2
    xsebela2 committed Jun 7, 2024
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  2. pixfmt_conv.c R12LtoRGBA implementation in SIMD 

    - 11 ms -> 6 ms
- need to specifically comment out R12LtoRGB to run R12LtoRGBA -- for
  some reason, UltraGrid prefers the longer R12L -> RGB -> RGBA path
    @xsebela2
    xsebela2 committed Jun 7, 2024
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