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added offscreen rendering to test cases

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This commit is contained in:
Thomas Friedel 2018-11-01 17:32:02 +01:00
parent 7297427a70
commit 4327bd938a
1 changed files with 13 additions and 3 deletions
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16
canvas_test.go
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@ -15,20 +15,26 @@ import (
)
func run(t *testing.T, fn func(cv *canvas.Canvas)) {
wnd, cv, err := sdlcanvas.CreateWindow(100, 100, "test")
wnd, cv2, err := sdlcanvas.CreateWindow(100, 100, "test")
if err != nil {
t.Fatalf("Failed to crete window: %v", err)
return
}
defer wnd.Destroy()
cv := canvas.NewOffscreen(100, 100)
gl.Disable(gl.MULTISAMPLE)
wnd.StartFrame()
cv.ClearRect(0, 0, 100, 100)
fn(cv)
img := cv.GetImageData(0, 0, 100, 100)
cv2.DrawImage(cv)
img2 := cv2.GetImageData(0, 0, 100, 100)
caller, _, _, ok := runtime.Caller(1)
if !ok {
t.Fatal("Failed to get caller")
@ -85,8 +91,12 @@ func run(t *testing.T, fn func(cv *canvas.Canvas)) {
for y := 0; y < 100; y++ {
for x := 0; x < 100; x++ {
r1, g1, b1, a1 := img.At(x, y).RGBA()
r2, g2, b2, a2 := refImg.At(x, y).RGBA()
if r1 != r2 || g1 != g2 || b1 != b2 || a1 != a2 {
r2, g2, b2, a2 := img2.At(x, y).RGBA()
r3, g3, b3, a3 := refImg.At(x, y).RGBA()
if r1 != r3 || g1 != g3 || b1 != b3 || a1 != a3 {
t.FailNow()
}
if r2 != r3 || g2 != g3 || b2 != b3 || a2 != a3 {
t.FailNow()
}
}