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rm unimportant simd for now

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This commit is contained in:
Ryan Oldenburg 2022-07-07 16:18:10 -05:00
parent dabe456af9
commit 8ca1400699
1 changed files with 9 additions and 60 deletions
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69
src/pixie/blends.nim
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@ -273,67 +273,16 @@ proc blendSoftLight*(backdrop, source: ColorRGBX): ColorRGBX =
backdrop = backdrop.rgba()
source = source.rgba()
var rgba: ColorRGBA
when defined(amd64) and allowSimd:
let
vb = mm_setr_ps(
backdrop.r.float32,
backdrop.g.float32,
backdrop.b.float32,
0
)
vs = mm_setr_ps(source.r.float32, source.g.float32, source.b.float32, 0)
v2 = mm_set1_ps(2)
v255 = mm_set1_ps(255)
v255sq = mm_set1_ps(255 * 255)
vm = ((v255 - v2 * vs) * vb * vb) / v255sq + (v2 * vs * vb) / v255
values = cast[array[4, uint32]](mm_cvtps_epi32(vm))
let
b = backdrop.color
s = source.color
var blended: Color
blended.r = softLight(b.r, s.r)
blended.g = softLight(b.g, s.g)
blended.b = softLight(b.b, s.b)
blended = alphaFix(b, s, blended)
rgba.r = values[0].uint8
rgba.g = values[1].uint8
rgba.b = values[2].uint8
# proc alphaFix(backdrop, source, mixed: ColorRGBX): ColorRGBX {.inline.} =
# if backdrop.a == 0 and source.a == 0:
# return
# let
# vb = mm_setr_ps(backdrop.r.float32, backdrop.g.float32, backdrop.b.float32, 0)
# vs = mm_setr_ps(source.r.float32, source.g.float32, source.b.float32, 0)
# vm = mm_setr_ps(mixed.r.float32, mixed.g.float32, mixed.b.float32, 0)
# alphaFix(backdrop, source, vb, vs, vm)
let
sa = source.a.float32
ba = backdrop.a.float32
a = sa + ba * (255 - sa) / 255
if a == 0:
return
let
t0 = mm_set1_ps(sa * (255 - ba))
t1 = mm_set1_ps(sa * ba)
t2 = mm_set1_ps((255 - sa) * ba)
va = mm_set1_ps(a)
final = cast[array[4, uint32]](
mm_cvtps_epi32((t0 * vs + t1 * vm + t2 * vb) / va / v255)
)
rgba.r = final[0].uint8
rgba.g = final[1].uint8
rgba.b = final[2].uint8
rgba.a = a.uint8
else:
let
b = backdrop.color
s = source.color
var blended: Color
blended.r = softLight(b.r, s.r)
blended.g = softLight(b.g, s.g)
blended.b = softLight(b.b, s.b)
blended = alphaFix(b, s, blended)
rgba = blended.rgba
result = rgba.rgbx()
result = blended.rgbx()
proc blendHardLight*(backdrop, source: ColorRGBX): ColorRGBX =
result.r = hardLight(backdrop.r, backdrop.a, source.r, source.a)