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This commit is contained in:
Ryan Oldenburg 2022-06-20 21:10:23 -05:00
parent 53e5185360
commit 7c91a69bca
1 changed files with 4 additions and 5 deletions
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9
src/pixie/internal.nim
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@ -165,9 +165,7 @@ proc isOpaque*(data: var seq[ColorRGBX], start, len: int): bool =
var i = start
when defined(amd64) and allowSimd:
let
vec255 = mm_set1_epi32(cast[int32](uint32.high))
colorMask = mm_set1_epi32(cast[int32]([255.uint8, 255, 255, 0]))
let vec255 = mm_set1_epi32(cast[int32](uint32.high))
for _ in start ..< (start + len) div 16:
let
values0 = mm_loadu_si128(data[i + 0].addr)
@ -176,8 +174,9 @@ proc isOpaque*(data: var seq[ColorRGBX], start, len: int): bool =
values3 = mm_loadu_si128(data[i + 12].addr)
values01 = mm_and_si128(values0, values1)
values23 = mm_and_si128(values2, values3)
values = mm_or_si128(mm_and_si128(values01, values23), colorMask)
if mm_movemask_epi8(mm_cmpeq_epi8(values, vec255)) != 0xffff:
values = mm_and_si128(values01, values23)
eq = mm_cmpeq_epi8(values, vec255)
if (mm_movemask_epi8(eq) and 0x00008888) != 0x00008888:
return false
i += 16