diff options
author | Ian Davis <nospam@iandavis.com> | 2018-09-22 14:23:38 +0100 |
---|---|---|
committer | Brad Fitzpatrick <bradfitz@golang.org> | 2018-09-24 17:44:11 +0000 |
commit | 4039be00a9e77bd4080ac657a940472341fa088f (patch) | |
tree | 352f56498a504faa566265bf69c44b05c3ba2ab4 /src/image | |
parent | 9774fa6f4020dba924d63991f572aa89325e1c9c (diff) | |
download | go-4039be00a9e77bd4080ac657a940472341fa088f.tar.gz go-4039be00a9e77bd4080ac657a940472341fa088f.zip |
image: add benchmarks for At and Set methods
Added in preparation for looking at some optimizations around bounds
checks.
BenchmarkAt/rgba-8 100000000 18.5 ns/op 4 B/op 1 allocs/op
BenchmarkAt/rgba64-8 100000000 22.9 ns/op 8 B/op 1 allocs/op
BenchmarkAt/nrgba-8 100000000 18.8 ns/op 4 B/op 1 allocs/op
BenchmarkAt/nrgba64-8 100000000 22.1 ns/op 8 B/op 1 allocs/op
BenchmarkAt/alpha-8 100000000 14.6 ns/op 1 B/op 1 allocs/op
BenchmarkAt/alpha16-8 200000000 6.46 ns/op 0 B/op 0 allocs/op
BenchmarkAt/gray-8 100000000 14.3 ns/op 1 B/op 1 allocs/op
BenchmarkAt/gray16-8 200000000 6.45 ns/op 0 B/op 0 allocs/op
BenchmarkAt/paletted-8 300000000 4.28 ns/op 0 B/op 0 allocs/op
BenchmarkSet/rgba-8 50000000 39.2 ns/op 8 B/op 2 allocs/op
BenchmarkSet/rgba64-8 30000000 45.8 ns/op 16 B/op 2 allocs/op
BenchmarkSet/nrgba-8 50000000 39.3 ns/op 8 B/op 2 allocs/op
BenchmarkSet/nrgba64-8 30000000 45.6 ns/op 16 B/op 2 allocs/op
BenchmarkSet/alpha-8 50000000 34.5 ns/op 2 B/op 2 allocs/op
BenchmarkSet/alpha16-8 50000000 34.9 ns/op 4 B/op 2 allocs/op
BenchmarkSet/gray-8 100000000 20.3 ns/op 1 B/op 1 allocs/op
BenchmarkSet/gray16-8 50000000 36.2 ns/op 4 B/op 2 allocs/op
BenchmarkSet/paletted-8 50000000 39.5 ns/op 1 B/op 1 allocs/op
BenchmarkRGBAAt-8 500000000 3.74 ns/op
BenchmarkRGBASetRGBA-8 300000000 4.33 ns/op
BenchmarkRGBA64At-8 300000000 5.06 ns/op
BenchmarkRGBA64SetRGBA64-8 200000000 6.61 ns/op
BenchmarkNRGBAAt-8 500000000 3.69 ns/op
BenchmarkNRGBASetNRGBA-8 300000000 4.06 ns/op
BenchmarkNRGBA64At-8 300000000 4.98 ns/op
BenchmarkNRGBA64SetNRGBA64-8 200000000 6.62 ns/op
BenchmarkAlphaAt-8 2000000000 1.43 ns/op
BenchmarkAlphaSetAlpha-8 2000000000 1.55 ns/op
BenchmarkAlpha16At-8 1000000000 2.87 ns/op
BenchmarkAlphaSetAlpha16-8 500000000 3.27 ns/op
BenchmarkGrayAt-8 2000000000 1.43 ns/op
BenchmarkGraySetGray-8 2000000000 1.55 ns/op
BenchmarkGray16At-8 1000000000 2.87 ns/op
BenchmarkGraySetGray16-8 500000000 3.14 ns/op
Updates #14884
Change-Id: I349fb214ee75f13ecbc62ac22a40e3b337648f60
Reviewed-on: https://go-review.googlesource.com/136796
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Diffstat (limited to 'src/image')
-rw-r--r-- | src/image/image_test.go | 210 |
1 files changed, 195 insertions, 15 deletions
diff --git a/src/image/image_test.go b/src/image/image_test.go index 08ba61ea0c..6f49752a25 100644 --- a/src/image/image_test.go +++ b/src/image/image_test.go @@ -22,22 +22,27 @@ func cmp(cm color.Model, c0, c1 color.Color) bool { return r0 == r1 && g0 == g1 && b0 == b1 && a0 == a1 } +var testImages = []struct { + name string + image image +}{ + {"rgba", NewRGBA(Rect(0, 0, 10, 10))}, + {"rgba64", NewRGBA64(Rect(0, 0, 10, 10))}, + {"nrgba", NewNRGBA(Rect(0, 0, 10, 10))}, + {"nrgba64", NewNRGBA64(Rect(0, 0, 10, 10))}, + {"alpha", NewAlpha(Rect(0, 0, 10, 10))}, + {"alpha16", NewAlpha16(Rect(0, 0, 10, 10))}, + {"gray", NewGray(Rect(0, 0, 10, 10))}, + {"gray16", NewGray16(Rect(0, 0, 10, 10))}, + {"paletted", NewPaletted(Rect(0, 0, 10, 10), color.Palette{ + Transparent, + Opaque, + })}, +} + func TestImage(t *testing.T) { - testImage := []image{ - NewRGBA(Rect(0, 0, 10, 10)), - NewRGBA64(Rect(0, 0, 10, 10)), - NewNRGBA(Rect(0, 0, 10, 10)), - NewNRGBA64(Rect(0, 0, 10, 10)), - NewAlpha(Rect(0, 0, 10, 10)), - NewAlpha16(Rect(0, 0, 10, 10)), - NewGray(Rect(0, 0, 10, 10)), - NewGray16(Rect(0, 0, 10, 10)), - NewPaletted(Rect(0, 0, 10, 10), color.Palette{ - Transparent, - Opaque, - }), - } - for _, m := range testImage { + for _, tc := range testImages { + m := tc.image if !Rect(0, 0, 10, 10).Eq(m.Bounds()) { t.Errorf("%T: want bounds %v, got %v", m, Rect(0, 0, 10, 10), m.Bounds()) continue @@ -111,3 +116,178 @@ func Test16BitsPerColorChannel(t *testing.T) { } } } + +func BenchmarkAt(b *testing.B) { + for _, tc := range testImages { + b.Run(tc.name, func(b *testing.B) { + b.ReportAllocs() + for i := 0; i < b.N; i++ { + tc.image.At(4, 5) + } + }) + } +} + +func BenchmarkSet(b *testing.B) { + c := color.Gray{0xff} + for _, tc := range testImages { + b.Run(tc.name, func(b *testing.B) { + b.ReportAllocs() + for i := 0; i < b.N; i++ { + tc.image.Set(4, 5, c) + } + }) + } +} + +func BenchmarkRGBAAt(b *testing.B) { + m := NewRGBA(Rect(0, 0, 10, 10)) + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.RGBAAt(4, 5) + } +} + +func BenchmarkRGBASetRGBA(b *testing.B) { + m := NewRGBA(Rect(0, 0, 10, 10)) + c := color.RGBA{0xff, 0xff, 0xff, 0x13} + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.SetRGBA(4, 5, c) + } +} + +func BenchmarkRGBA64At(b *testing.B) { + m := NewRGBA64(Rect(0, 0, 10, 10)) + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.RGBA64At(4, 5) + } +} + +func BenchmarkRGBA64SetRGBA64(b *testing.B) { + m := NewRGBA64(Rect(0, 0, 10, 10)) + c := color.RGBA64{0xffff, 0xffff, 0xffff, 0x1357} + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.SetRGBA64(4, 5, c) + } +} + +func BenchmarkNRGBAAt(b *testing.B) { + m := NewNRGBA(Rect(0, 0, 10, 10)) + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.NRGBAAt(4, 5) + } +} + +func BenchmarkNRGBASetNRGBA(b *testing.B) { + m := NewNRGBA(Rect(0, 0, 10, 10)) + c := color.NRGBA{0xff, 0xff, 0xff, 0x13} + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.SetNRGBA(4, 5, c) + } +} + +func BenchmarkNRGBA64At(b *testing.B) { + m := NewNRGBA64(Rect(0, 0, 10, 10)) + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.NRGBA64At(4, 5) + } +} + +func BenchmarkNRGBA64SetNRGBA64(b *testing.B) { + m := NewNRGBA64(Rect(0, 0, 10, 10)) + c := color.NRGBA64{0xffff, 0xffff, 0xffff, 0x1357} + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.SetNRGBA64(4, 5, c) + } +} + +func BenchmarkAlphaAt(b *testing.B) { + m := NewAlpha(Rect(0, 0, 10, 10)) + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.AlphaAt(4, 5) + } +} + +func BenchmarkAlphaSetAlpha(b *testing.B) { + m := NewAlpha(Rect(0, 0, 10, 10)) + c := color.Alpha{0x13} + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.SetAlpha(4, 5, c) + } +} + +func BenchmarkAlpha16At(b *testing.B) { + m := NewAlpha16(Rect(0, 0, 10, 10)) + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.Alpha16At(4, 5) + } +} + +func BenchmarkAlphaSetAlpha16(b *testing.B) { + m := NewAlpha16(Rect(0, 0, 10, 10)) + c := color.Alpha16{0x13} + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.SetAlpha16(4, 5, c) + } +} + +func BenchmarkGrayAt(b *testing.B) { + m := NewGray(Rect(0, 0, 10, 10)) + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.GrayAt(4, 5) + } +} + +func BenchmarkGraySetGray(b *testing.B) { + m := NewGray(Rect(0, 0, 10, 10)) + c := color.Gray{0x13} + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.SetGray(4, 5, c) + } +} + +func BenchmarkGray16At(b *testing.B) { + m := NewGray16(Rect(0, 0, 10, 10)) + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.Gray16At(4, 5) + } +} + +func BenchmarkGraySetGray16(b *testing.B) { + m := NewGray16(Rect(0, 0, 10, 10)) + c := color.Gray16{0x13} + b.ResetTimer() + + for i := 0; i < b.N; i++ { + m.SetGray16(4, 5, c) + } +} |