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ebiten: add tests

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Updates #2178
This commit is contained in:
Hajime Hoshi 2022-07-04 23:57:17 +09:00
parent 08ebab0558
commit a70e069f0d
1 changed files with 102 additions and 0 deletions
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102
image_test.go
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@ -3244,3 +3244,105 @@ func TestImageOptionsClear(t *testing.T) {
} }
} }
} }
// Issue #2178
func TestImageTooManyDrawImage(t *testing.T) {
src := ebiten.NewImage(1, 1)
src.Fill(color.RGBA{0xff, 0xff, 0xff, 0xff})
const (
w = 256
h = 256
)
dst := ebiten.NewImage(w, h)
op := &ebiten.DrawImageOptions{}
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
op.GeoM.Reset()
op.GeoM.Translate(float64(i), float64(j))
dst.DrawImage(src, op)
}
}
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
if got, want := dst.At(i, j), (color.RGBA{0xff, 0xff, 0xff, 0xff}); got != want {
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
}
}
}
}
// Issue #2178
func TestImageTooManyDrawTriangles(t *testing.T) {
img := ebiten.NewImage(3, 3)
img.Fill(color.RGBA{0xff, 0xff, 0xff, 0xff})
src := img.SubImage(image.Rect(1, 1, 2, 2)).(*ebiten.Image)
const (
w = 128
h = 64
)
dst := ebiten.NewImage(w, h)
var vertices []ebiten.Vertex
var indices []uint16
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
n := uint16(len(vertices))
vertices = append(vertices,
ebiten.Vertex{
DstX: float32(i),
DstY: float32(j),
SrcX: 1,
SrcY: 1,
ColorR: 1,
ColorG: 1,
ColorB: 1,
ColorA: 1,
},
ebiten.Vertex{
DstX: float32(i) + 1,
DstY: float32(j),
SrcX: 2,
SrcY: 1,
ColorR: 1,
ColorG: 1,
ColorB: 1,
ColorA: 1,
},
ebiten.Vertex{
DstX: float32(i),
DstY: float32(j) + 1,
SrcX: 1,
SrcY: 2,
ColorR: 1,
ColorG: 1,
ColorB: 1,
ColorA: 1,
},
ebiten.Vertex{
DstX: float32(i) + 1,
DstY: float32(j) + 1,
SrcX: 2,
SrcY: 2,
ColorR: 1,
ColorG: 1,
ColorB: 1,
ColorA: 1,
},
)
indices = append(indices, n, n+1, n+2, n+1, n+2, n+3)
}
}
dst.DrawTriangles(vertices, indices, src, nil)
for j := 0; j < h; j++ {
for i := 0; i < w; i++ {
if got, want := dst.At(i, j), (color.RGBA{0xff, 0xff, 0xff, 0xff}); got != want {
t.Errorf("dst.At(%d, %d): got: %v, want: %v", i, j, got, want)
}
}
}
}