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https://github.com/hajimehoshi/ebiten.git
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graphics: Add TestImageOutside
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parent
704d4cf464
commit
98532d8983
7
image.go
7
image.go
@ -98,11 +98,13 @@ func (i *Image) DrawImage(img *Image, options *DrawImageOptions) error {
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if options == nil {
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options = &DrawImageOptions{}
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}
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parts := options.ImageParts
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// Parts is deprecated. This implementations is for backward compatibility.
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if parts == nil && options.Parts != nil {
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parts = imageParts(options.Parts)
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}
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// ImageParts is deprecated. This implementations is for backward compatibility.
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if parts != nil {
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l := parts.Len()
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@ -124,14 +126,19 @@ func (i *Image) DrawImage(img *Image, options *DrawImageOptions) error {
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}
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return nil
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}
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w, h := img.restorable.Size()
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sx0, sy0, sx1, sy1 := 0, 0, w, h
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if r := options.SourceRect; r != nil {
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sx0 = r.Min.X
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sy0 = r.Min.Y
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if sx1 > r.Max.X {
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sx1 = r.Max.X
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}
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if sy1 > r.Max.Y {
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sy1 = r.Max.Y
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}
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}
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vs := vertices(sx0, sy0, sx1, sy1, w, h, &options.GeoM.impl)
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mode := opengl.CompositeMode(options.CompositeMode)
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i.restorable.DrawImage(img.restorable, vs, &options.ColorM.impl, mode)
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@ -621,3 +621,42 @@ func TestImageLinear(t *testing.T) {
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}
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}
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}
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func TestImageOutside(t *testing.T) {
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src, _ := NewImage(5, 10, FilterNearest) // internal texture size is 16x16.
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dst, _ := NewImage(4, 4, FilterNearest)
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src.Fill(color.RGBA{0xff, 0, 0, 0xff})
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cases := []struct {
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X, Y int
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}{
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{-4, -4},
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{5, 0},
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{0, 10},
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{5, 10},
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{16, 0},
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{0, 16},
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{16, 16},
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{16, -4},
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{-4, 16},
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}
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for _, c := range cases {
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dst.Clear()
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op := &DrawImageOptions{}
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op.GeoM.Translate(0, 0)
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r := image.Rect(c.X, c.Y, c.X+4, c.Y+4)
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op.SourceRect = &r
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dst.DrawImage(src, op)
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for j := 0; j < 4; j++ {
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for i := 0; i < 4; i++ {
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got := color.RGBAModel.Convert(dst.At(i, j)).(color.RGBA)
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want := color.RGBA{0, 0, 0, 0}
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if got != want {
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t.Errorf("src(%d, %d), dst At(%d, %d): got %#v, want: %#v", c.X, c.Y, i, j, got, want)
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}
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}
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}
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}
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}
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@ -83,6 +83,9 @@ highp vec2 roundTexel(highp vec2 p) {
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}
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vec4 getColorAt(highp vec2 pos) {
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if (pos.x < 0.0 || pos.y < 0.0) {
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return vec4(0, 0, 0, 0);
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}
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if (pos.x < varying_tex_coord_min.x ||
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pos.y < varying_tex_coord_min.y ||
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varying_tex_coord_max.x <= pos.x ||
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