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pack4xAlphaValues

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This commit is contained in:
Ryan Oldenburg 2021-12-14 16:11:40 -06:00
parent f9813d054c
commit 7195d0a74d
2 changed files with 12 additions and 25 deletions
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29
src/pixie/images.nim
View file

@ -542,26 +542,15 @@ proc newMask*(image: Image): Mask {.raises: [PixieError].} =
var i: int
when defined(amd64) and not defined(pixieNoSimd):
for _ in 0 ..< image.data.len div 16:
var
let
a = mm_loadu_si128(image.data[i + 0].addr)
b = mm_loadu_si128(image.data[i + 4].addr)
c = mm_loadu_si128(image.data[i + 8].addr)
d = mm_loadu_si128(image.data[i + 12].addr)
a = packAlphaValues(a)
b = packAlphaValues(b)
c = packAlphaValues(c)
d = packAlphaValues(d)
b = mm_slli_si128(b, 4)
c = mm_slli_si128(c, 8)
d = mm_slli_si128(d, 12)
mm_storeu_si128(
result.data[i].addr,
mm_or_si128(mm_or_si128(a, b), mm_or_si128(c, d))
pack4xAlphaValues(a, b, c, d)
)
i += 16
for j in i ..< image.data.len:
@ -850,22 +839,12 @@ proc drawUber(
backdrop = mm_loadu_si128(a.data[a.dataIndex(x, y)].addr)
when type(b) is Image:
# Need to read 16 colors and pack their alpha values
var
let
i = mm_loadu_si128(b.data[b.dataIndex(sx + 0, sy)].addr)
j = mm_loadu_si128(b.data[b.dataIndex(sx + 4, sy)].addr)
k = mm_loadu_si128(b.data[b.dataIndex(sx + 8, sy)].addr)
l = mm_loadu_si128(b.data[b.dataIndex(sx + 12, sy)].addr)
i = packAlphaValues(i)
j = packAlphaValues(j)
k = packAlphaValues(k)
l = packAlphaValues(l)
j = mm_slli_si128(j, 4)
k = mm_slli_si128(k, 8)
l = mm_slli_si128(l, 12)
let source = mm_or_si128(mm_or_si128(i, j), mm_or_si128(k, l))
source = pack4xAlphaValues(i, j, k, l)
else: # b is a Mask
let source = mm_loadu_si128(b.data[b.dataIndex(sx, sy)].addr)

8
src/pixie/internal.nim
View file

@ -173,6 +173,14 @@ when defined(amd64) and not defined(pixieNoSimd):
result = mm_or_si128(mm_or_si128(result, i), mm_or_si128(j, k))
result = mm_and_si128(result, first32)
proc pack4xAlphaValues*(i, j, k, l: M128i): M128i {.inline, raises: [].} =
let
i = packAlphaValues(i)
j = mm_slli_si128(packAlphaValues(j), 4)
k = mm_slli_si128(packAlphaValues(k), 8)
l = mm_slli_si128(packAlphaValues(l), 12)
mm_or_si128(mm_or_si128(i, j), mm_or_si128(k, l))
proc unpackAlphaValues*(v: M128i): M128i {.inline, raises: [].} =
## Unpack the first 32 bits into 4 rgba(0, 0, 0, value)
let