pixie/tests/benchmark_inplace.nim

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import pixie, chroma, vmath, fidget/opengl/perf, pixie/fileformats/bmp
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proc inPlaceDraw*(destImage: Image, srcImage: Image, mat: Mat3, blendMode = bmNormal) =
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## Draws one image onto another using matrix with color blending.
for y in 0 ..< destImage.width:
for x in 0 ..< destImage.height:
let srcPos = mat * vec2(x.float32, y.float32)
let destRgba = destImage.getRgbaUnsafe(x, y)
var rgba = destRgba
var srcRgba = rgba(0, 0, 0, 0)
if srcImage.inside(srcPos.x.floor.int, srcPos.y.floor.int):
srcRgba = srcImage.getRgbaSmooth(srcPos.x - 0.5, srcPos.y - 0.5)
if blendMode.hasEffect(srcRgba):
rgba = blendMode.mix(destRgba, srcRgba)
destImage.setRgbaUnsafe(x, y, rgba)
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proc inPlaceDraw*(destImage: Image, srcImage: Image, pos = vec2(0, 0), blendMode = bmNormal) =
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destImage.inPlaceDraw(srcImage, translate(-pos), blendMode)
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block:
var a = newImage(100, 100)
a.fill(rgba(255, 0, 0, 255))
var b = newImage(100, 100)
b.fill(rgba(0, 255, 0, 255))
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a.inPlaceDraw(b, pos=vec2(25, 25))
writeFile("tests/images/inPlaceDraw.bmp", a.encodeBmp())
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block:
var a = newImage(100, 100)
a.fill(rgba(255, 0, 0, 255))
var b = newImage(100, 100)
b.fill(rgba(0, 255, 0, 255))
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var c = a.drawFast3(b, translate(vec2(25, 25)), bmNormal)
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writeFile("tests/images/copyDraw.bmp", c.encodeBmp())
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timeIt "inPlaceDraw":
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var tmp = 0
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for i in 0 ..< 1000:
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var a = newImage(100, 100)
a.fill(rgba(255, 0, 0, 255))
var b = newImage(100, 100)
b.fill(rgba(0, 255, 0, 255))
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a.inPlaceDraw(b, pos=vec2(25, 25))
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tmp += a.width * a.height
echo tmp
timeIt "copyDraw":
var tmp = 0
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for i in 0 ..< 1000:
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var a = newImage(100, 100)
a.fill(rgba(255, 0, 0, 255))
var b = newImage(100, 100)
b.fill(rgba(0, 255, 0, 255))
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var c = a.drawFast3(b, translate(vec2(25, 25)), bmNormal)
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tmp += c.width * c.height
echo tmp