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This commit is contained in:
Ryan Oldenburg 2022-06-20 20:46:38 -05:00
parent 380c9be181
commit 97d69b1473
1 changed files with 2 additions and 4 deletions
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6
src/pixie/internal.nim
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@ -205,10 +205,8 @@ when defined(amd64) and allowSimd:
proc unpackAlphaValues*(v: M128i): M128i {.inline, raises: [].} =
## Unpack the first 32 bits into 4 rgba(0, 0, 0, value)
let
a = mm_unpacklo_epi8(v, mm_setzero_si128())
b = mm_unpacklo_epi8(a, mm_setzero_si128())
result = mm_slli_epi32(b, 24) # Shift the values to uint32 `a`
result = mm_unpacklo_epi8(mm_setzero_si128(), v)
result = mm_unpacklo_epi8(mm_setzero_si128(), result)
when defined(release):
{.pop.}