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simpler

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This commit is contained in:
Ryan Oldenburg 2022-07-21 22:10:46 -05:00
parent bca5ce4268
commit 6e2786a22f
3 changed files with 4 additions and 17 deletions
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9
src/pixie/blends.nim
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@ -553,16 +553,11 @@ when defined(amd64) and allowSimd:
var
backdropEven = mm_slli_epi16(backdrop, 8)
backdropOdd = mm_and_si128(backdrop, oddMask)
# backdrop * k
backdropEven = mm_mulhi_epu16(backdropEven, evenK)
backdropOdd = mm_mulhi_epu16(backdropOdd, oddK)
# div 255
backdropEven = mm_srli_epi16(mm_mulhi_epu16(backdropEven, div255), 7)
backdropOdd = mm_srli_epi16(mm_mulhi_epu16(backdropOdd, div255), 7)
# Shift from high to low bits
sourceEven = mm_srli_epi16(sourceEven, 8)
sourceOdd = mm_srli_epi16(sourceOdd, 8)
@ -582,12 +577,8 @@ when defined(amd64) and allowSimd:
var
backdropEven = mm_slli_epi16(backdrop, 8)
backdropOdd = mm_and_si128(backdrop, oddMask)
# backdrop * source
backdropEven = mm_mulhi_epu16(backdropEven, sourceEven)
backdropOdd = mm_mulhi_epu16(backdropOdd, sourceOdd)
# div 255
backdropEven = mm_srli_epi16(mm_mulhi_epu16(backdropEven, div255), 7)
backdropOdd = mm_srli_epi16(mm_mulhi_epu16(backdropOdd, div255), 7)

6
src/pixie/simd/avx2.nim
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@ -116,10 +116,8 @@ proc toPremultipliedAlphaAvx2*(data: var seq[ColorRGBA | ColorRGBX]) {.simd.} =
let
tmpEven = mm256_add_epi16(colorsEven, vec128)
tmpOdd = mm256_add_epi16(colorsOdd, vec128)
colorsEven = tmpEven
colorsOdd = tmpOdd
colorsEven = mm256_srli_epi16(colorsEven, 8)
colorsOdd = mm256_srli_epi16(colorsOdd, 8)
colorsEven = mm256_srli_epi16(tmpEven, 8)
colorsOdd = mm256_srli_epi16(tmpOdd, 8)
colorsEven = mm256_add_epi16(colorsEven, tmpEven)
colorsOdd = mm256_add_epi16(colorsOdd, tmpOdd)
colorsEven = mm256_srli_epi16(colorsEven, 8)

6
src/pixie/simd/sse2.nim
View file

@ -190,10 +190,8 @@ proc toPremultipliedAlphaSse2*(data: var seq[ColorRGBA | ColorRGBX]) {.simd.} =
let
tmpEven = mm_add_epi16(colorsEven, vec128)
tmpOdd = mm_add_epi16(colorsOdd, vec128)
colorsEven = tmpEven
colorsOdd = tmpOdd
colorsEven = mm_srli_epi16(colorsEven, 8)
colorsOdd = mm_srli_epi16(colorsOdd, 8)
colorsEven = mm_srli_epi16(tmpEven, 8)
colorsOdd = mm_srli_epi16(tmpOdd, 8)
colorsEven = mm_add_epi16(colorsEven, tmpEven)
colorsOdd = mm_add_epi16(colorsOdd, tmpOdd)
colorsEven = mm_srli_epi16(colorsEven, 8)