mirror of https://github.com/golang/go.git
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>
This commit is contained in:
Ian Davis
Brad Fitzpatrick
parent
9774fa6f40
commit
4039be00a9
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@ -22,22 +22,27 @@ func cmp(cm color.Model, c0, c1 color.Color) bool {
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return r0 == r1 && g0 == g1 && b0 == b1 && a0 == a1
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}
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var testImages = []struct {
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name string
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image image
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}{
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{"rgba", NewRGBA(Rect(0, 0, 10, 10))},
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{"rgba64", NewRGBA64(Rect(0, 0, 10, 10))},
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{"nrgba", NewNRGBA(Rect(0, 0, 10, 10))},
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{"nrgba64", NewNRGBA64(Rect(0, 0, 10, 10))},
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{"alpha", NewAlpha(Rect(0, 0, 10, 10))},
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{"alpha16", NewAlpha16(Rect(0, 0, 10, 10))},
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{"gray", NewGray(Rect(0, 0, 10, 10))},
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{"gray16", NewGray16(Rect(0, 0, 10, 10))},
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{"paletted", NewPaletted(Rect(0, 0, 10, 10), color.Palette{
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Transparent,
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Opaque,
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})},
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}
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func TestImage(t *testing.T) {
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testImage := []image{
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NewRGBA(Rect(0, 0, 10, 10)),
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NewRGBA64(Rect(0, 0, 10, 10)),
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NewNRGBA(Rect(0, 0, 10, 10)),
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NewNRGBA64(Rect(0, 0, 10, 10)),
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NewAlpha(Rect(0, 0, 10, 10)),
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NewAlpha16(Rect(0, 0, 10, 10)),
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NewGray(Rect(0, 0, 10, 10)),
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NewGray16(Rect(0, 0, 10, 10)),
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NewPaletted(Rect(0, 0, 10, 10), color.Palette{
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Transparent,
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Opaque,
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}),
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}
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for _, m := range testImage {
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for _, tc := range testImages {
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m := tc.image
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if !Rect(0, 0, 10, 10).Eq(m.Bounds()) {
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t.Errorf("%T: want bounds %v, got %v", m, Rect(0, 0, 10, 10), m.Bounds())
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continue
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@ -111,3 +116,178 @@ func Test16BitsPerColorChannel(t *testing.T) {
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}
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}
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}
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func BenchmarkAt(b *testing.B) {
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for _, tc := range testImages {
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b.Run(tc.name, func(b *testing.B) {
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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tc.image.At(4, 5)
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}
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})
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}
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}
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func BenchmarkSet(b *testing.B) {
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c := color.Gray{0xff}
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for _, tc := range testImages {
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b.Run(tc.name, func(b *testing.B) {
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b.ReportAllocs()
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for i := 0; i < b.N; i++ {
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tc.image.Set(4, 5, c)
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}
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})
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}
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}
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func BenchmarkRGBAAt(b *testing.B) {
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m := NewRGBA(Rect(0, 0, 10, 10))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.RGBAAt(4, 5)
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}
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}
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func BenchmarkRGBASetRGBA(b *testing.B) {
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m := NewRGBA(Rect(0, 0, 10, 10))
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c := color.RGBA{0xff, 0xff, 0xff, 0x13}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.SetRGBA(4, 5, c)
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}
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}
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func BenchmarkRGBA64At(b *testing.B) {
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m := NewRGBA64(Rect(0, 0, 10, 10))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.RGBA64At(4, 5)
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}
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}
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func BenchmarkRGBA64SetRGBA64(b *testing.B) {
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m := NewRGBA64(Rect(0, 0, 10, 10))
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c := color.RGBA64{0xffff, 0xffff, 0xffff, 0x1357}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.SetRGBA64(4, 5, c)
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}
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}
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func BenchmarkNRGBAAt(b *testing.B) {
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m := NewNRGBA(Rect(0, 0, 10, 10))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.NRGBAAt(4, 5)
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}
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}
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func BenchmarkNRGBASetNRGBA(b *testing.B) {
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m := NewNRGBA(Rect(0, 0, 10, 10))
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c := color.NRGBA{0xff, 0xff, 0xff, 0x13}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.SetNRGBA(4, 5, c)
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}
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}
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func BenchmarkNRGBA64At(b *testing.B) {
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m := NewNRGBA64(Rect(0, 0, 10, 10))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.NRGBA64At(4, 5)
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}
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}
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func BenchmarkNRGBA64SetNRGBA64(b *testing.B) {
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m := NewNRGBA64(Rect(0, 0, 10, 10))
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c := color.NRGBA64{0xffff, 0xffff, 0xffff, 0x1357}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.SetNRGBA64(4, 5, c)
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}
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}
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func BenchmarkAlphaAt(b *testing.B) {
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m := NewAlpha(Rect(0, 0, 10, 10))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.AlphaAt(4, 5)
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}
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}
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func BenchmarkAlphaSetAlpha(b *testing.B) {
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m := NewAlpha(Rect(0, 0, 10, 10))
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c := color.Alpha{0x13}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.SetAlpha(4, 5, c)
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}
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}
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func BenchmarkAlpha16At(b *testing.B) {
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m := NewAlpha16(Rect(0, 0, 10, 10))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.Alpha16At(4, 5)
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}
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}
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func BenchmarkAlphaSetAlpha16(b *testing.B) {
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m := NewAlpha16(Rect(0, 0, 10, 10))
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c := color.Alpha16{0x13}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.SetAlpha16(4, 5, c)
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}
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}
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func BenchmarkGrayAt(b *testing.B) {
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m := NewGray(Rect(0, 0, 10, 10))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.GrayAt(4, 5)
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}
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}
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func BenchmarkGraySetGray(b *testing.B) {
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m := NewGray(Rect(0, 0, 10, 10))
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c := color.Gray{0x13}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.SetGray(4, 5, c)
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}
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}
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func BenchmarkGray16At(b *testing.B) {
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m := NewGray16(Rect(0, 0, 10, 10))
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.Gray16At(4, 5)
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}
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}
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func BenchmarkGraySetGray16(b *testing.B) {
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m := NewGray16(Rect(0, 0, 10, 10))
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c := color.Gray16{0x13}
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b.ResetTimer()
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for i := 0; i < b.N; i++ {
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m.SetGray16(4, 5, c)
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}
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}
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