ebiten/docs/examples/filter.html

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<meta name="description" content="Ebiten example - filter">
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<title>Ebiten example - filter</title>
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<h2>Ebiten example - filter</h2>
<iframe src="filter.content.html" width="640" height="480"></iframe>
<div class="card"><pre class="card-body"><code class="language-go">// &#43;build example
package main
import (
_ &#34;image/png&#34;
&#34;log&#34;
&#34;github.com/hajimehoshi/ebiten&#34;
&#34;github.com/hajimehoshi/ebiten/ebitenutil&#34;
)
const (
screenWidth = 640
screenHeight = 480
)
var (
ebitenImage *ebiten.Image
)
func update(screen *ebiten.Image) error {
if ebiten.IsRunningSlowly() {
return nil
}
ebitenutil.DebugPrint(screen, &#34;Nearest Filter (default) VS Linear Filter&#34;)
op := &amp;ebiten.DrawImageOptions{}
op.GeoM.Scale(4, 4)
op.GeoM.Translate(64, 64)
// By default, nearest filter is used.
screen.DrawImage(ebitenImage, op)
op = &amp;ebiten.DrawImageOptions{}
op.GeoM.Scale(4, 4)
op.GeoM.Translate(64, 64&#43;240)
// Specify linear filter.
op.Filter = ebiten.FilterLinear
screen.DrawImage(ebitenImage, op)
return nil
}
func main() {
var err error
// Specifying filter on NewImage(FromImage) is just for backward compatibility.
// Now specifying filter at DrawImageOptions is recommended.
// Specify FilterDefault here, that means to prefer filter specified at DrawImageOptions.
ebitenImage, _, err = ebitenutil.NewImageFromFile(&#34;_resources/images/ebiten.png&#34;, ebiten.FilterDefault)
if err != nil {
log.Fatal(err)
}
if err := ebiten.Run(update, screenWidth, screenHeight, 1, &#34;Filter (Ebiten Demo)&#34;); err != nil {
log.Fatal(err)
}
}
</code></pre></div>
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