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This commit is contained in:
Ryan Oldenburg 2022-06-20 21:05:58 -05:00
parent 97d69b1473
commit 53e5185360
1 changed files with 4 additions and 7 deletions
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11
src/pixie/internal.nim
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@ -186,14 +186,11 @@ proc isOpaque*(data: var seq[ColorRGBX], start, len: int): bool =
return false
when defined(amd64) and allowSimd:
proc packAlphaValues*(v: M128i): M128i {.inline, raises: [].} =
proc packAlphaValues(v: M128i): M128i {.inline, raises: [].} =
## Shuffle the alpha values for these 4 colors to the first 4 bytes
let mask = mm_set1_epi32(cast[int32](0xff000000))
result = mm_and_si128(v, mask)
result = mm_srli_epi32(result, 24)
result = mm_packus_epi16(result, result)
result = mm_packus_epi16(result, result)
result = mm_srli_si128(result, 12)
result = mm_srli_epi32(v, 24)
result = mm_packus_epi16(result, mm_setzero_si128())
result = mm_packus_epi16(result, mm_setzero_si128())
proc pack4xAlphaValues*(i, j, k, l: M128i): M128i {.inline, raises: [].} =
let