diff options
Diffstat (limited to 'src/pkg/image/png/writer_test.go')
-rw-r--r-- | src/pkg/image/png/writer_test.go | 40 |
1 files changed, 36 insertions, 4 deletions
diff --git a/src/pkg/image/png/writer_test.go b/src/pkg/image/png/writer_test.go index 4d9929f31..6b054aaa8 100644 --- a/src/pkg/image/png/writer_test.go +++ b/src/pkg/image/png/writer_test.go @@ -5,10 +5,10 @@ package png import ( - "bytes" "fmt" "image" "io" + "io/ioutil" "os" "testing" ) @@ -81,10 +81,42 @@ func BenchmarkEncodePaletted(b *testing.B) { image.RGBAColor{0, 0, 0, 255}, image.RGBAColor{255, 255, 255, 255}, }) + b.SetBytes(640 * 480 * 1) b.StartTimer() - buffer := new(bytes.Buffer) for i := 0; i < b.N; i++ { - buffer.Reset() - Encode(buffer, img) + Encode(ioutil.Discard, img) + } +} + +func BenchmarkEncodeRGBOpaque(b *testing.B) { + b.StopTimer() + img := image.NewRGBA(640, 480) + // Set all pixels to 0xFF alpha to force opaque mode. + bo := img.Bounds() + for y := bo.Min.Y; y < bo.Max.Y; y++ { + for x := bo.Min.X; x < bo.Max.X; x++ { + img.Set(x, y, image.RGBAColor{0, 0, 0, 255}) + } + } + if !img.Opaque() { + panic("expected image to be opaque") + } + b.SetBytes(640 * 480 * 4) + b.StartTimer() + for i := 0; i < b.N; i++ { + Encode(ioutil.Discard, img) + } +} + +func BenchmarkEncodeRGBA(b *testing.B) { + b.StopTimer() + img := image.NewRGBA(640, 480) + if img.Opaque() { + panic("expected image to not be opaque") + } + b.SetBytes(640 * 480 * 4) + b.StartTimer() + for i := 0; i < b.N; i++ { + Encode(ioutil.Discard, img) } } |