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This commit is contained in:
Ryan Oldenburg 2022-06-21 00:00:15 -05:00
parent f54d46bee0
commit 1821c8ea93
1 changed files with 0 additions and 4 deletions
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src/pixie/images.nim
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@ -412,18 +412,14 @@ proc applyOpacity*(target: Image | Mask, opacity: float32) {.raises: [].} =
let index = i
let values = mm_loadu_si128(target.data[index].addr)
if mm_movemask_epi8(mm_cmpeq_epi16(values, zeroVec)) != 0xffff:
var
valuesEven = mm_slli_epi16(values, 8)
valuesOdd = mm_and_si128(values, oddMask)
valuesEven = mm_mulhi_epu16(valuesEven, opacityVec)
valuesOdd = mm_mulhi_epu16(valuesOdd, opacityVec)
valuesEven = mm_srli_epi16(mm_mulhi_epu16(valuesEven, div255), 7)
valuesOdd = mm_srli_epi16(mm_mulhi_epu16(valuesOdd, div255), 7)
mm_storeu_si128(
target.data[index].addr,
mm_or_si128(valuesEven, mm_slli_epi16(valuesOdd, 8))