MyouProject/pixie
2
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Merge pull request #67 from guzba/master

Browse source 
0.0.15, gate simd behind amd64
This commit is contained in:
treeform 2021-01-23 11:21:19 -08:00 committed by GitHub
commit 45da7c4db9
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 71 additions and 42 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
pixie.nimble
View file

@ -1,4 +1,4 @@
version = "0.0.14"
version = "0.0.15"
author = "Andre von Houck and Ryan Oldenburg"
description = "Full-featured 2d graphics library for Nim."
license = "MIT"

31
src/pixie/blends.nim
View file

@ -1,5 +1,8 @@
## Blending modes.
import chroma, math, nimsimd/sse2
import chroma, math
when defined(amd64):
import nimsimd/sse2
# See https://www.w3.org/TR/compositing-1/
# See https://www.khronos.org/registry/OpenGL/extensions/KHR/KHR_blend_equation_advanced.txt
@ -261,6 +264,7 @@ proc blendExcludeMaskFloats*(backdrop, source: Color): Color {.inline.} =
proc blendOverwriteFloats*(backdrop, source: Color): Color {.inline.} =
source
when defined(amd64):
proc alphaFix(backdrop, source: ColorRGBA, vb, vs, vm: M128): ColorRGBA =
let
sa = source.a.float32
@ -292,6 +296,28 @@ proc alphaFix(backdrop, source, mixed: ColorRGBA): ColorRGBA {.inline.} =
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)
else:
proc alphaFix(backdrop, source, mixed: ColorRGBA): ColorRGBA {.inline.} =
let
sa = source.a.int32
ba = backdrop.a.int32
t0 = sa * (255 - ba)
t1 = sa * ba
t2 = (255 - sa) * ba
let
r = t0 * source.r.int32 + t1 * mixed.r.int32 + t2 * backdrop.r.int32
g = t0 * source.g.int32 + t1 * mixed.g.int32 + t2 * backdrop.g.int32
b = t0 * source.b.int32 + t1 * mixed.b.int32 + t2 * backdrop.b.int32
a = sa + ba * (255 - sa) div 255
if a == 0:
return
result.r = (r div a div 255).uint8
result.g = (g div a div 255).uint8
result.b = (b div a div 255).uint8
result.a = a.uint8
proc min(a, b: uint32): uint32 {.inline.} =
if a < b: a else: b
@ -391,6 +417,7 @@ proc blendSoftLight(backdrop, source: ColorRGBA): ColorRGBA =
# (2 * source * backdrop) div 255
# ).uint8
when defined(amd64):
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)
@ -404,6 +431,8 @@ proc blendSoftLight(backdrop, source: ColorRGBA): ColorRGBA =
result.g = values[1].uint8
result.b = values[2].uint8
result = alphaFix(backdrop, source, vb, vs, vm)
else:
blendSoftLightFloats(backdrop.color, source.color).rgba
proc blendDifference(backdrop, source: ColorRGBA): ColorRGBA =
result.r = max(backdrop.r, source.r) - min(backdrop.r, source.r)