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graphics: Add TestImage4096

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This commit is contained in:
Hajime Hoshi 2018-02-03 03:52:47 +09:00
parent 4bbb4b0445
commit fe140c2caf
1 changed files with 26 additions and 0 deletions
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26
image_test.go
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@ -680,3 +680,29 @@ func TestImageOutsideUpperLeft(t *testing.T) {
} }
} }
} }
func TestImage4096(t *testing.T) {
src, _ := NewImage(4096, 4096, FilterNearest)
dst, _ := NewImage(4096, 4096, FilterNearest)
pix := make([]byte, 4096*4096*4)
for j := 4095; j < 4096; j++ {
for i := 4095; i < 4096; i++ {
idx := 4 * (i + j*4096)
pix[idx] = uint8(i + j)
pix[idx+1] = uint8((i + j) >> 8)
pix[idx+2] = uint8((i + j) >> 16)
pix[idx+3] = 0xff
}
}
src.ReplacePixels(pix)
dst.DrawImage(src, nil)
for j := 4095; j < 4096; j++ {
for i := 4095; i < 4096; i++ {
got := color.RGBAModel.Convert(dst.At(i, j)).(color.RGBA)
want := color.RGBA{uint8(i + j), uint8((i + j) >> 8), uint8((i + j) >> 16), 0xff}
if got != want {
t.Errorf("At(%d, %d): got: %#v, want: %#v", i, j, got, want)
}
}
}
}