From 500caaeda74dd9c660279036293f4b2997cf0b03 Mon Sep 17 00:00:00 2001 From: Dimitri Sokolyuk Date: Sat, 9 Sep 2017 09:42:37 +0200 Subject: Add vendor --- vendor/golang.org/x/image/draw/scale_test.go | 731 +++++++++++++++++++++++++++ 1 file changed, 731 insertions(+) create mode 100644 vendor/golang.org/x/image/draw/scale_test.go (limited to 'vendor/golang.org/x/image/draw/scale_test.go') diff --git a/vendor/golang.org/x/image/draw/scale_test.go b/vendor/golang.org/x/image/draw/scale_test.go new file mode 100644 index 0000000..5e184c2 --- /dev/null +++ b/vendor/golang.org/x/image/draw/scale_test.go @@ -0,0 +1,731 @@ +// Copyright 2015 The Go Authors. All rights reserved. +// Use of this source code is governed by a BSD-style +// license that can be found in the LICENSE file. + +package draw + +import ( + "bytes" + "flag" + "fmt" + "image" + "image/color" + "image/png" + "math/rand" + "os" + "reflect" + "testing" + + "golang.org/x/image/math/f64" + + _ "image/jpeg" +) + +var genGoldenFiles = flag.Bool("gen_golden_files", false, "whether to generate the TestXxx golden files.") + +var transformMatrix = func(scale, tx, ty float64) f64.Aff3 { + const cos30, sin30 = 0.866025404, 0.5 + return f64.Aff3{ + +scale * cos30, -scale * sin30, tx, + +scale * sin30, +scale * cos30, ty, + } +} + +func encode(filename string, m image.Image) error { + f, err := os.Create(filename) + if err != nil { + return fmt.Errorf("Create: %v", err) + } + defer f.Close() + if err := png.Encode(f, m); err != nil { + return fmt.Errorf("Encode: %v", err) + } + return nil +} + +// testInterp tests that interpolating the source image gives the exact +// destination image. This is to ensure that any refactoring or optimization of +// the interpolation code doesn't change the behavior. Changing the actual +// algorithm or kernel used by any particular quality setting will obviously +// change the resultant pixels. In such a case, use the gen_golden_files flag +// to regenerate the golden files. +func testInterp(t *testing.T, w int, h int, direction, prefix, suffix string) { + f, err := os.Open("../testdata/" + prefix + suffix) + if err != nil { + t.Fatalf("Open: %v", err) + } + defer f.Close() + src, _, err := image.Decode(f) + if err != nil { + t.Fatalf("Decode: %v", err) + } + + op, scale := Src, 3.75 + if prefix == "tux" { + op, scale = Over, 0.125 + } + green := image.NewUniform(color.RGBA{0x00, 0x22, 0x11, 0xff}) + + testCases := map[string]Interpolator{ + "nn": NearestNeighbor, + "ab": ApproxBiLinear, + "bl": BiLinear, + "cr": CatmullRom, + } + for name, q := range testCases { + goldenFilename := fmt.Sprintf("../testdata/%s-%s-%s.png", prefix, direction, name) + + got := image.NewRGBA(image.Rect(0, 0, w, h)) + Copy(got, image.Point{}, green, got.Bounds(), Src, nil) + if direction == "rotate" { + q.Transform(got, transformMatrix(scale, 40, 10), src, src.Bounds(), op, nil) + } else { + q.Scale(got, got.Bounds(), src, src.Bounds(), op, nil) + } + + if *genGoldenFiles { + if err := encode(goldenFilename, got); err != nil { + t.Error(err) + } + continue + } + + g, err := os.Open(goldenFilename) + if err != nil { + t.Errorf("Open: %v", err) + continue + } + defer g.Close() + wantRaw, err := png.Decode(g) + if err != nil { + t.Errorf("Decode: %v", err) + continue + } + // convert wantRaw to RGBA. + want, ok := wantRaw.(*image.RGBA) + if !ok { + b := wantRaw.Bounds() + want = image.NewRGBA(b) + Draw(want, b, wantRaw, b.Min, Src) + } + + if !reflect.DeepEqual(got, want) { + t.Errorf("%s: actual image differs from golden image", goldenFilename) + continue + } + } +} + +func TestScaleDown(t *testing.T) { testInterp(t, 100, 100, "down", "go-turns-two", "-280x360.jpeg") } +func TestScaleUp(t *testing.T) { testInterp(t, 75, 100, "up", "go-turns-two", "-14x18.png") } +func TestTformSrc(t *testing.T) { testInterp(t, 100, 100, "rotate", "go-turns-two", "-14x18.png") } +func TestTformOver(t *testing.T) { testInterp(t, 100, 100, "rotate", "tux", ".png") } + +// TestSimpleTransforms tests Scale and Transform calls that simplify to Copy +// or Scale calls. +func TestSimpleTransforms(t *testing.T) { + f, err := os.Open("../testdata/testpattern.png") // A 100x100 image. + if err != nil { + t.Fatalf("Open: %v", err) + } + defer f.Close() + src, _, err := image.Decode(f) + if err != nil { + t.Fatalf("Decode: %v", err) + } + + dst0 := image.NewRGBA(image.Rect(0, 0, 120, 150)) + dst1 := image.NewRGBA(image.Rect(0, 0, 120, 150)) + for _, op := range []string{"scale/copy", "tform/copy", "tform/scale"} { + for _, epsilon := range []float64{0, 1e-50, 1e-1} { + Copy(dst0, image.Point{}, image.Transparent, dst0.Bounds(), Src, nil) + Copy(dst1, image.Point{}, image.Transparent, dst1.Bounds(), Src, nil) + + switch op { + case "scale/copy": + dr := image.Rect(10, 30, 10+100, 30+100) + if epsilon > 1e-10 { + dr.Max.X++ + } + Copy(dst0, image.Point{10, 30}, src, src.Bounds(), Src, nil) + ApproxBiLinear.Scale(dst1, dr, src, src.Bounds(), Src, nil) + case "tform/copy": + Copy(dst0, image.Point{10, 30}, src, src.Bounds(), Src, nil) + ApproxBiLinear.Transform(dst1, f64.Aff3{ + 1, 0 + epsilon, 10, + 0, 1, 30, + }, src, src.Bounds(), Src, nil) + case "tform/scale": + ApproxBiLinear.Scale(dst0, image.Rect(10, 50, 10+50, 50+50), src, src.Bounds(), Src, nil) + ApproxBiLinear.Transform(dst1, f64.Aff3{ + 0.5, 0.0 + epsilon, 10, + 0.0, 0.5, 50, + }, src, src.Bounds(), Src, nil) + } + + differ := !bytes.Equal(dst0.Pix, dst1.Pix) + if epsilon > 1e-10 { + if !differ { + t.Errorf("%s yielded same pixels, want different pixels: epsilon=%v", op, epsilon) + } + } else { + if differ { + t.Errorf("%s yielded different pixels, want same pixels: epsilon=%v", op, epsilon) + } + } + } + } +} + +func BenchmarkSimpleScaleCopy(b *testing.B) { + dst := image.NewRGBA(image.Rect(0, 0, 640, 480)) + src := image.NewRGBA(image.Rect(0, 0, 400, 300)) + b.ResetTimer() + for i := 0; i < b.N; i++ { + ApproxBiLinear.Scale(dst, image.Rect(10, 20, 10+400, 20+300), src, src.Bounds(), Src, nil) + } +} + +func BenchmarkSimpleTransformCopy(b *testing.B) { + dst := image.NewRGBA(image.Rect(0, 0, 640, 480)) + src := image.NewRGBA(image.Rect(0, 0, 400, 300)) + b.ResetTimer() + for i := 0; i < b.N; i++ { + ApproxBiLinear.Transform(dst, f64.Aff3{ + 1, 0, 10, + 0, 1, 20, + }, src, src.Bounds(), Src, nil) + } +} + +func BenchmarkSimpleTransformScale(b *testing.B) { + dst := image.NewRGBA(image.Rect(0, 0, 640, 480)) + src := image.NewRGBA(image.Rect(0, 0, 400, 300)) + b.ResetTimer() + for i := 0; i < b.N; i++ { + ApproxBiLinear.Transform(dst, f64.Aff3{ + 0.5, 0.0, 10, + 0.0, 0.5, 20, + }, src, src.Bounds(), Src, nil) + } +} + +func TestOps(t *testing.T) { + blue := image.NewUniform(color.RGBA{0x00, 0x00, 0xff, 0xff}) + testCases := map[Op]color.RGBA{ + Over: color.RGBA{0x7f, 0x00, 0x80, 0xff}, + Src: color.RGBA{0x7f, 0x00, 0x00, 0x7f}, + } + for op, want := range testCases { + dst := image.NewRGBA(image.Rect(0, 0, 2, 2)) + Copy(dst, image.Point{}, blue, dst.Bounds(), Src, nil) + + src := image.NewRGBA(image.Rect(0, 0, 1, 1)) + src.SetRGBA(0, 0, color.RGBA{0x7f, 0x00, 0x00, 0x7f}) + + NearestNeighbor.Scale(dst, dst.Bounds(), src, src.Bounds(), op, nil) + + if got := dst.RGBAAt(0, 0); got != want { + t.Errorf("op=%v: got %v, want %v", op, got, want) + } + } +} + +// TestNegativeWeights tests that scaling by a kernel that produces negative +// weights, such as the Catmull-Rom kernel, doesn't produce an invalid color +// according to Go's alpha-premultiplied model. +func TestNegativeWeights(t *testing.T) { + check := func(m *image.RGBA) error { + b := m.Bounds() + for y := b.Min.Y; y < b.Max.Y; y++ { + for x := b.Min.X; x < b.Max.X; x++ { + if c := m.RGBAAt(x, y); c.R > c.A || c.G > c.A || c.B > c.A { + return fmt.Errorf("invalid color.RGBA at (%d, %d): %v", x, y, c) + } + } + } + return nil + } + + src := image.NewRGBA(image.Rect(0, 0, 16, 16)) + for y := 0; y < 16; y++ { + for x := 0; x < 16; x++ { + a := y * 0x11 + src.Set(x, y, color.RGBA{ + R: uint8(x * 0x11 * a / 0xff), + A: uint8(a), + }) + } + } + if err := check(src); err != nil { + t.Fatalf("src image: %v", err) + } + + dst := image.NewRGBA(image.Rect(0, 0, 32, 32)) + CatmullRom.Scale(dst, dst.Bounds(), src, src.Bounds(), Over, nil) + if err := check(dst); err != nil { + t.Fatalf("dst image: %v", err) + } +} + +func fillPix(r *rand.Rand, pixs ...[]byte) { + for _, pix := range pixs { + for i := range pix { + pix[i] = uint8(r.Intn(256)) + } + } +} + +func TestInterpClipCommute(t *testing.T) { + src := image.NewNRGBA(image.Rect(0, 0, 20, 20)) + fillPix(rand.New(rand.NewSource(0)), src.Pix) + + outer := image.Rect(1, 1, 8, 5) + inner := image.Rect(2, 3, 6, 5) + qs := []Interpolator{ + NearestNeighbor, + ApproxBiLinear, + CatmullRom, + } + for _, transform := range []bool{false, true} { + for _, q := range qs { + dst0 := image.NewRGBA(image.Rect(1, 1, 10, 10)) + dst1 := image.NewRGBA(image.Rect(1, 1, 10, 10)) + for i := range dst0.Pix { + dst0.Pix[i] = uint8(i / 4) + dst1.Pix[i] = uint8(i / 4) + } + + var interp func(dst *image.RGBA) + if transform { + interp = func(dst *image.RGBA) { + q.Transform(dst, transformMatrix(3.75, 2, 1), src, src.Bounds(), Over, nil) + } + } else { + interp = func(dst *image.RGBA) { + q.Scale(dst, outer, src, src.Bounds(), Over, nil) + } + } + + // Interpolate then clip. + interp(dst0) + dst0 = dst0.SubImage(inner).(*image.RGBA) + + // Clip then interpolate. + dst1 = dst1.SubImage(inner).(*image.RGBA) + interp(dst1) + + loop: + for y := inner.Min.Y; y < inner.Max.Y; y++ { + for x := inner.Min.X; x < inner.Max.X; x++ { + if c0, c1 := dst0.RGBAAt(x, y), dst1.RGBAAt(x, y); c0 != c1 { + t.Errorf("q=%T: at (%d, %d): c0=%v, c1=%v", q, x, y, c0, c1) + break loop + } + } + } + } + } +} + +// translatedImage is an image m translated by t. +type translatedImage struct { + m image.Image + t image.Point +} + +func (t *translatedImage) At(x, y int) color.Color { return t.m.At(x-t.t.X, y-t.t.Y) } +func (t *translatedImage) Bounds() image.Rectangle { return t.m.Bounds().Add(t.t) } +func (t *translatedImage) ColorModel() color.Model { return t.m.ColorModel() } + +// TestSrcTranslationInvariance tests that Scale and Transform are invariant +// under src translations. Specifically, when some source pixels are not in the +// bottom-right quadrant of src coordinate space, we consistently round down, +// not round towards zero. +func TestSrcTranslationInvariance(t *testing.T) { + f, err := os.Open("../testdata/testpattern.png") + if err != nil { + t.Fatalf("Open: %v", err) + } + defer f.Close() + src, _, err := image.Decode(f) + if err != nil { + t.Fatalf("Decode: %v", err) + } + sr := image.Rect(2, 3, 16, 12) + if !sr.In(src.Bounds()) { + t.Fatalf("src bounds too small: got %v", src.Bounds()) + } + qs := []Interpolator{ + NearestNeighbor, + ApproxBiLinear, + CatmullRom, + } + deltas := []image.Point{ + {+0, +0}, + {+0, +5}, + {+0, -5}, + {+5, +0}, + {-5, +0}, + {+8, +8}, + {+8, -8}, + {-8, +8}, + {-8, -8}, + } + m00 := transformMatrix(3.75, 0, 0) + + for _, transform := range []bool{false, true} { + for _, q := range qs { + want := image.NewRGBA(image.Rect(0, 0, 20, 20)) + if transform { + q.Transform(want, m00, src, sr, Over, nil) + } else { + q.Scale(want, want.Bounds(), src, sr, Over, nil) + } + for _, delta := range deltas { + tsrc := &translatedImage{src, delta} + got := image.NewRGBA(image.Rect(0, 0, 20, 20)) + if transform { + m := matMul(&m00, &f64.Aff3{ + 1, 0, -float64(delta.X), + 0, 1, -float64(delta.Y), + }) + q.Transform(got, m, tsrc, sr.Add(delta), Over, nil) + } else { + q.Scale(got, got.Bounds(), tsrc, sr.Add(delta), Over, nil) + } + if !bytes.Equal(got.Pix, want.Pix) { + t.Errorf("pix differ for delta=%v, transform=%t, q=%T", delta, transform, q) + } + } + } + } +} + +func TestSrcMask(t *testing.T) { + srcMask := image.NewRGBA(image.Rect(0, 0, 23, 1)) + srcMask.SetRGBA(19, 0, color.RGBA{0x00, 0x00, 0x00, 0x7f}) + srcMask.SetRGBA(20, 0, color.RGBA{0x00, 0x00, 0x00, 0xff}) + srcMask.SetRGBA(21, 0, color.RGBA{0x00, 0x00, 0x00, 0x3f}) + srcMask.SetRGBA(22, 0, color.RGBA{0x00, 0x00, 0x00, 0x00}) + red := image.NewUniform(color.RGBA{0xff, 0x00, 0x00, 0xff}) + blue := image.NewUniform(color.RGBA{0x00, 0x00, 0xff, 0xff}) + dst := image.NewRGBA(image.Rect(0, 0, 6, 1)) + Copy(dst, image.Point{}, blue, dst.Bounds(), Src, nil) + NearestNeighbor.Scale(dst, dst.Bounds(), red, image.Rect(0, 0, 3, 1), Over, &Options{ + SrcMask: srcMask, + SrcMaskP: image.Point{20, 0}, + }) + got := [6]color.RGBA{ + dst.RGBAAt(0, 0), + dst.RGBAAt(1, 0), + dst.RGBAAt(2, 0), + dst.RGBAAt(3, 0), + dst.RGBAAt(4, 0), + dst.RGBAAt(5, 0), + } + want := [6]color.RGBA{ + {0xff, 0x00, 0x00, 0xff}, + {0xff, 0x00, 0x00, 0xff}, + {0x3f, 0x00, 0xc0, 0xff}, + {0x3f, 0x00, 0xc0, 0xff}, + {0x00, 0x00, 0xff, 0xff}, + {0x00, 0x00, 0xff, 0xff}, + } + if got != want { + t.Errorf("\ngot %v\nwant %v", got, want) + } +} + +func TestDstMask(t *testing.T) { + dstMask := image.NewRGBA(image.Rect(0, 0, 23, 1)) + dstMask.SetRGBA(19, 0, color.RGBA{0x00, 0x00, 0x00, 0x7f}) + dstMask.SetRGBA(20, 0, color.RGBA{0x00, 0x00, 0x00, 0xff}) + dstMask.SetRGBA(21, 0, color.RGBA{0x00, 0x00, 0x00, 0x3f}) + dstMask.SetRGBA(22, 0, color.RGBA{0x00, 0x00, 0x00, 0x00}) + red := image.NewRGBA(image.Rect(0, 0, 1, 1)) + red.SetRGBA(0, 0, color.RGBA{0xff, 0x00, 0x00, 0xff}) + blue := image.NewUniform(color.RGBA{0x00, 0x00, 0xff, 0xff}) + qs := []Interpolator{ + NearestNeighbor, + ApproxBiLinear, + CatmullRom, + } + for _, q := range qs { + dst := image.NewRGBA(image.Rect(0, 0, 3, 1)) + Copy(dst, image.Point{}, blue, dst.Bounds(), Src, nil) + q.Scale(dst, dst.Bounds(), red, red.Bounds(), Over, &Options{ + DstMask: dstMask, + DstMaskP: image.Point{20, 0}, + }) + got := [3]color.RGBA{ + dst.RGBAAt(0, 0), + dst.RGBAAt(1, 0), + dst.RGBAAt(2, 0), + } + want := [3]color.RGBA{ + {0xff, 0x00, 0x00, 0xff}, + {0x3f, 0x00, 0xc0, 0xff}, + {0x00, 0x00, 0xff, 0xff}, + } + if got != want { + t.Errorf("q=%T:\ngot %v\nwant %v", q, got, want) + } + } +} + +func TestRectDstMask(t *testing.T) { + f, err := os.Open("../testdata/testpattern.png") + if err != nil { + t.Fatalf("Open: %v", err) + } + defer f.Close() + src, _, err := image.Decode(f) + if err != nil { + t.Fatalf("Decode: %v", err) + } + m00 := transformMatrix(1, 0, 0) + + bounds := image.Rect(0, 0, 50, 50) + dstOutside := image.NewRGBA(bounds) + for y := bounds.Min.Y; y < bounds.Max.Y; y++ { + for x := bounds.Min.X; x < bounds.Max.X; x++ { + dstOutside.SetRGBA(x, y, color.RGBA{uint8(5 * x), uint8(5 * y), 0x00, 0xff}) + } + } + + mk := func(q Transformer, dstMask image.Image, dstMaskP image.Point) *image.RGBA { + m := image.NewRGBA(bounds) + Copy(m, bounds.Min, dstOutside, bounds, Src, nil) + q.Transform(m, m00, src, src.Bounds(), Over, &Options{ + DstMask: dstMask, + DstMaskP: dstMaskP, + }) + return m + } + + qs := []Interpolator{ + NearestNeighbor, + ApproxBiLinear, + CatmullRom, + } + dstMaskPs := []image.Point{ + {0, 0}, + {5, 7}, + {-3, 0}, + } + rect := image.Rect(10, 10, 30, 40) + for _, q := range qs { + for _, dstMaskP := range dstMaskPs { + dstInside := mk(q, nil, image.Point{}) + for _, wrap := range []bool{false, true} { + // TODO: replace "rectImage(rect)" with "rect" once Go 1.5 is + // released, where an image.Rectangle implements image.Image. + dstMask := image.Image(rectImage(rect)) + if wrap { + dstMask = srcWrapper{dstMask} + } + dst := mk(q, dstMask, dstMaskP) + + nError := 0 + loop: + for y := bounds.Min.Y; y < bounds.Max.Y; y++ { + for x := bounds.Min.X; x < bounds.Max.X; x++ { + which := dstOutside + if (image.Point{x, y}).Add(dstMaskP).In(rect) { + which = dstInside + } + if got, want := dst.RGBAAt(x, y), which.RGBAAt(x, y); got != want { + if nError == 10 { + t.Errorf("q=%T dmp=%v wrap=%v: ...and more errors", q, dstMaskP, wrap) + break loop + } + nError++ + t.Errorf("q=%T dmp=%v wrap=%v: x=%3d y=%3d: got %v, want %v", + q, dstMaskP, wrap, x, y, got, want) + } + } + } + } + } + } +} + +// TODO: delete this wrapper type once Go 1.5 is released, where an +// image.Rectangle implements image.Image. +type rectImage image.Rectangle + +func (r rectImage) ColorModel() color.Model { return color.Alpha16Model } +func (r rectImage) Bounds() image.Rectangle { return image.Rectangle(r) } +func (r rectImage) At(x, y int) color.Color { + if (image.Point{x, y}).In(image.Rectangle(r)) { + return color.Opaque + } + return color.Transparent +} + +// The fooWrapper types wrap the dst or src image to avoid triggering the +// type-specific fast path implementations. +type ( + dstWrapper struct{ Image } + srcWrapper struct{ image.Image } +) + +func srcGray(boundsHint image.Rectangle) (image.Image, error) { + m := image.NewGray(boundsHint) + fillPix(rand.New(rand.NewSource(0)), m.Pix) + return m, nil +} + +func srcNRGBA(boundsHint image.Rectangle) (image.Image, error) { + m := image.NewNRGBA(boundsHint) + fillPix(rand.New(rand.NewSource(1)), m.Pix) + return m, nil +} + +func srcRGBA(boundsHint image.Rectangle) (image.Image, error) { + m := image.NewRGBA(boundsHint) + fillPix(rand.New(rand.NewSource(2)), m.Pix) + // RGBA is alpha-premultiplied, so the R, G and B values should + // be <= the A values. + for i := 0; i < len(m.Pix); i += 4 { + m.Pix[i+0] = uint8(uint32(m.Pix[i+0]) * uint32(m.Pix[i+3]) / 0xff) + m.Pix[i+1] = uint8(uint32(m.Pix[i+1]) * uint32(m.Pix[i+3]) / 0xff) + m.Pix[i+2] = uint8(uint32(m.Pix[i+2]) * uint32(m.Pix[i+3]) / 0xff) + } + return m, nil +} + +func srcUnif(boundsHint image.Rectangle) (image.Image, error) { + return image.NewUniform(color.RGBA64{0x1234, 0x5555, 0x9181, 0xbeef}), nil +} + +func srcYCbCr(boundsHint image.Rectangle) (image.Image, error) { + m := image.NewYCbCr(boundsHint, image.YCbCrSubsampleRatio420) + fillPix(rand.New(rand.NewSource(3)), m.Y, m.Cb, m.Cr) + return m, nil +} + +func srcLarge(boundsHint image.Rectangle) (image.Image, error) { + // 3072 x 2304 is over 7 million pixels at 4:3, comparable to a + // 2015 smart-phone camera's output. + return srcYCbCr(image.Rect(0, 0, 3072, 2304)) +} + +func srcTux(boundsHint image.Rectangle) (image.Image, error) { + // tux.png is a 386 x 395 image. + f, err := os.Open("../testdata/tux.png") + if err != nil { + return nil, fmt.Errorf("Open: %v", err) + } + defer f.Close() + src, err := png.Decode(f) + if err != nil { + return nil, fmt.Errorf("Decode: %v", err) + } + return src, nil +} + +func benchScale(b *testing.B, w int, h int, op Op, srcf func(image.Rectangle) (image.Image, error), q Interpolator) { + dst := image.NewRGBA(image.Rect(0, 0, w, h)) + src, err := srcf(image.Rect(0, 0, 1024, 768)) + if err != nil { + b.Fatal(err) + } + dr, sr := dst.Bounds(), src.Bounds() + scaler := Scaler(q) + if n, ok := q.(interface { + NewScaler(int, int, int, int) Scaler + }); ok { + scaler = n.NewScaler(dr.Dx(), dr.Dy(), sr.Dx(), sr.Dy()) + } + + b.ReportAllocs() + b.ResetTimer() + for i := 0; i < b.N; i++ { + scaler.Scale(dst, dr, src, sr, op, nil) + } +} + +func benchTform(b *testing.B, w int, h int, op Op, srcf func(image.Rectangle) (image.Image, error), q Interpolator) { + dst := image.NewRGBA(image.Rect(0, 0, w, h)) + src, err := srcf(image.Rect(0, 0, 1024, 768)) + if err != nil { + b.Fatal(err) + } + sr := src.Bounds() + m := transformMatrix(3.75, 40, 10) + + b.ReportAllocs() + b.ResetTimer() + for i := 0; i < b.N; i++ { + q.Transform(dst, m, src, sr, op, nil) + } +} + +func BenchmarkScaleNNLargeDown(b *testing.B) { benchScale(b, 200, 150, Src, srcLarge, NearestNeighbor) } +func BenchmarkScaleABLargeDown(b *testing.B) { benchScale(b, 200, 150, Src, srcLarge, ApproxBiLinear) } +func BenchmarkScaleBLLargeDown(b *testing.B) { benchScale(b, 200, 150, Src, srcLarge, BiLinear) } +func BenchmarkScaleCRLargeDown(b *testing.B) { benchScale(b, 200, 150, Src, srcLarge, CatmullRom) } + +func BenchmarkScaleNNDown(b *testing.B) { benchScale(b, 120, 80, Src, srcTux, NearestNeighbor) } +func BenchmarkScaleABDown(b *testing.B) { benchScale(b, 120, 80, Src, srcTux, ApproxBiLinear) } +func BenchmarkScaleBLDown(b *testing.B) { benchScale(b, 120, 80, Src, srcTux, BiLinear) } +func BenchmarkScaleCRDown(b *testing.B) { benchScale(b, 120, 80, Src, srcTux, CatmullRom) } + +func BenchmarkScaleNNUp(b *testing.B) { benchScale(b, 800, 600, Src, srcTux, NearestNeighbor) } +func BenchmarkScaleABUp(b *testing.B) { benchScale(b, 800, 600, Src, srcTux, ApproxBiLinear) } +func BenchmarkScaleBLUp(b *testing.B) { benchScale(b, 800, 600, Src, srcTux, BiLinear) } +func BenchmarkScaleCRUp(b *testing.B) { benchScale(b, 800, 600, Src, srcTux, CatmullRom) } + +func BenchmarkScaleNNSrcRGBA(b *testing.B) { benchScale(b, 200, 150, Src, srcRGBA, NearestNeighbor) } +func BenchmarkScaleNNSrcUnif(b *testing.B) { benchScale(b, 200, 150, Src, srcUnif, NearestNeighbor) } + +func BenchmarkScaleNNOverRGBA(b *testing.B) { benchScale(b, 200, 150, Over, srcRGBA, NearestNeighbor) } +func BenchmarkScaleNNOverUnif(b *testing.B) { benchScale(b, 200, 150, Over, srcUnif, NearestNeighbor) } + +func BenchmarkTformNNSrcRGBA(b *testing.B) { benchTform(b, 200, 150, Src, srcRGBA, NearestNeighbor) } +func BenchmarkTformNNSrcUnif(b *testing.B) { benchTform(b, 200, 150, Src, srcUnif, NearestNeighbor) } + +func BenchmarkTformNNOverRGBA(b *testing.B) { benchTform(b, 200, 150, Over, srcRGBA, NearestNeighbor) } +func BenchmarkTformNNOverUnif(b *testing.B) { benchTform(b, 200, 150, Over, srcUnif, NearestNeighbor) } + +func BenchmarkScaleABSrcGray(b *testing.B) { benchScale(b, 200, 150, Src, srcGray, ApproxBiLinear) } +func BenchmarkScaleABSrcNRGBA(b *testing.B) { benchScale(b, 200, 150, Src, srcNRGBA, ApproxBiLinear) } +func BenchmarkScaleABSrcRGBA(b *testing.B) { benchScale(b, 200, 150, Src, srcRGBA, ApproxBiLinear) } +func BenchmarkScaleABSrcYCbCr(b *testing.B) { benchScale(b, 200, 150, Src, srcYCbCr, ApproxBiLinear) } + +func BenchmarkScaleABOverGray(b *testing.B) { benchScale(b, 200, 150, Over, srcGray, ApproxBiLinear) } +func BenchmarkScaleABOverNRGBA(b *testing.B) { benchScale(b, 200, 150, Over, srcNRGBA, ApproxBiLinear) } +func BenchmarkScaleABOverRGBA(b *testing.B) { benchScale(b, 200, 150, Over, srcRGBA, ApproxBiLinear) } +func BenchmarkScaleABOverYCbCr(b *testing.B) { benchScale(b, 200, 150, Over, srcYCbCr, ApproxBiLinear) } + +func BenchmarkTformABSrcGray(b *testing.B) { benchTform(b, 200, 150, Src, srcGray, ApproxBiLinear) } +func BenchmarkTformABSrcNRGBA(b *testing.B) { benchTform(b, 200, 150, Src, srcNRGBA, ApproxBiLinear) } +func BenchmarkTformABSrcRGBA(b *testing.B) { benchTform(b, 200, 150, Src, srcRGBA, ApproxBiLinear) } +func BenchmarkTformABSrcYCbCr(b *testing.B) { benchTform(b, 200, 150, Src, srcYCbCr, ApproxBiLinear) } + +func BenchmarkTformABOverGray(b *testing.B) { benchTform(b, 200, 150, Over, srcGray, ApproxBiLinear) } +func BenchmarkTformABOverNRGBA(b *testing.B) { benchTform(b, 200, 150, Over, srcNRGBA, ApproxBiLinear) } +func BenchmarkTformABOverRGBA(b *testing.B) { benchTform(b, 200, 150, Over, srcRGBA, ApproxBiLinear) } +func BenchmarkTformABOverYCbCr(b *testing.B) { benchTform(b, 200, 150, Over, srcYCbCr, ApproxBiLinear) } + +func BenchmarkScaleCRSrcGray(b *testing.B) { benchScale(b, 200, 150, Src, srcGray, CatmullRom) } +func BenchmarkScaleCRSrcNRGBA(b *testing.B) { benchScale(b, 200, 150, Src, srcNRGBA, CatmullRom) } +func BenchmarkScaleCRSrcRGBA(b *testing.B) { benchScale(b, 200, 150, Src, srcRGBA, CatmullRom) } +func BenchmarkScaleCRSrcYCbCr(b *testing.B) { benchScale(b, 200, 150, Src, srcYCbCr, CatmullRom) } + +func BenchmarkScaleCROverGray(b *testing.B) { benchScale(b, 200, 150, Over, srcGray, CatmullRom) } +func BenchmarkScaleCROverNRGBA(b *testing.B) { benchScale(b, 200, 150, Over, srcNRGBA, CatmullRom) } +func BenchmarkScaleCROverRGBA(b *testing.B) { benchScale(b, 200, 150, Over, srcRGBA, CatmullRom) } +func BenchmarkScaleCROverYCbCr(b *testing.B) { benchScale(b, 200, 150, Over, srcYCbCr, CatmullRom) } + +func BenchmarkTformCRSrcGray(b *testing.B) { benchTform(b, 200, 150, Src, srcGray, CatmullRom) } +func BenchmarkTformCRSrcNRGBA(b *testing.B) { benchTform(b, 200, 150, Src, srcNRGBA, CatmullRom) } +func BenchmarkTformCRSrcRGBA(b *testing.B) { benchTform(b, 200, 150, Src, srcRGBA, CatmullRom) } +func BenchmarkTformCRSrcYCbCr(b *testing.B) { benchTform(b, 200, 150, Src, srcYCbCr, CatmullRom) } + +func BenchmarkTformCROverGray(b *testing.B) { benchTform(b, 200, 150, Over, srcGray, CatmullRom) } +func BenchmarkTformCROverNRGBA(b *testing.B) { benchTform(b, 200, 150, Over, srcNRGBA, CatmullRom) } +func BenchmarkTformCROverRGBA(b *testing.B) { benchTform(b, 200, 150, Over, srcRGBA, CatmullRom) } +func BenchmarkTformCROverYCbCr(b *testing.B) { benchTform(b, 200, 150, Over, srcYCbCr, CatmullRom) } -- cgit v1.2.3