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simpler

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This commit is contained in:
Ryan Oldenburg 2022-06-20 22:21:49 -05:00
parent 82881ae75b
commit 4870c8f283
1 changed files with 3 additions and 6 deletions
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9
src/pixie/images.nim
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@ -355,17 +355,14 @@ proc magnifyBy2*(image: Image, power = 1): Image {.raises: [PixieError].} =
when defined(amd64) and allowSimd: when defined(amd64) and allowSimd:
if scale == 2: if scale == 2:
while x <= image.width - 4: while x <= image.width - 4:
let let values = mm_loadu_si128(image.data[image.dataIndex(x, y)].addr)
values = mm_loadu_si128(image.data[image.dataIndex(x, y)].addr)
lo = mm_unpacklo_epi32(values, mm_setzero_si128())
hi = mm_unpackhi_epi32(values, mm_setzero_si128())
mm_storeu_si128( mm_storeu_si128(
result.data[result.dataIndex(x * scale + 0, y * scale)].addr, result.data[result.dataIndex(x * scale + 0, y * scale)].addr,
mm_or_si128(lo, mm_slli_si128(lo, 4)) mm_unpacklo_epi32(values, values)
) )
mm_storeu_si128( mm_storeu_si128(
result.data[result.dataIndex(x * scale + 4, y * scale)].addr, result.data[result.dataIndex(x * scale + 4, y * scale)].addr,
mm_or_si128(hi, mm_slli_si128(hi, 4)) mm_unpackhi_epi32(values, values)
) )
x += 4 x += 4
for x in x ..< image.width: for x in x ..< image.width: