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ebiten: improve anti-alias test

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This commit is contained in:
Hajime Hoshi 2023-02-19 21:59:41 +09:00
parent 961c34efb5
commit ebb687562f
1 changed files with 36 additions and 3 deletions
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39
image_test.go
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@ -3885,10 +3885,43 @@ func TestImageAntiAlias(t *testing.T) {
ebiten.BlendXor,
ebiten.BlendLighter,
} {
dst0.Fill(color.RGBA{R: 0x24, G: 0x3f, B: 0x6a, A: 0x88})
dst1.Fill(color.RGBA{R: 0x24, G: 0x3f, B: 0x6a, A: 0x88})
rnd := rand.New(rand.NewSource(0))
max := func(x, y, z byte) byte {
if x >= y && x >= z {
return x
}
if y >= x && y >= z {
return y
}
return z
}
dstPix := make([]byte, 4*w*h)
for i := 0; i < w*h; i++ {
n := rnd.Int()
r, g, b := byte(n), byte(n>>8), byte(n>>16)
a := max(r, g, b)
dstPix[4*i] = r
dstPix[4*i+1] = g
dstPix[4*i+2] = b
dstPix[4*i+3] = a
}
dst0.WritePixels(dstPix)
dst1.WritePixels(dstPix)
tmp.Clear()
src.Fill(color.RGBA{R: 0x85, G: 0xa3, B: 0x08, A: 0xd3})
srcPix := make([]byte, 4*w*h)
for i := 0; i < w*h; i++ {
n := rnd.Int()
r, g, b := byte(n), byte(n>>8), byte(n>>16)
a := max(r, g, b)
srcPix[4*i] = r
srcPix[4*i+1] = g
srcPix[4*i+2] = b
srcPix[4*i+3] = a
}
src.WritePixels(srcPix)
// Create an actual result.
op := &ebiten.DrawTrianglesOptions{}