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ebitenutil: Speed up to avoid copying by image.Rect

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This commit is contained in:
Hajime Hoshi 2018-03-11 21:39:18 +09:00
parent ee7ef75b8b
commit 063153e41d
2 changed files with 6 additions and 2 deletions
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2
audio/audio.go
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@ -270,7 +270,7 @@ func (c *Context) loop() {
c.pingCount-- c.pingCount--
c.m.Unlock() c.m.Unlock()
const n = 4096 const n = 2048
if _, err := io.CopyN(p, c.players, n); err != nil { if _, err := io.CopyN(p, c.players, n); err != nil {
c.err = err c.err = err
return return

6
ebitenutil/debugprint.go
View File

@ -63,6 +63,7 @@ func drawDebugText(rt *ebiten.Image, str string, ox, oy int, src *ebiten.Image)
x := 0 x := 0
y := 0 y := 0
w, _ := debugPrintTextImage.Size() w, _ := debugPrintTextImage.Size()
var r image.Rectangle
for _, c := range str { for _, c := range str {
const ( const (
cw = assets.CharWidth cw = assets.CharWidth
@ -76,7 +77,10 @@ func drawDebugText(rt *ebiten.Image, str string, ox, oy int, src *ebiten.Image)
n := w / cw n := w / cw
sx := (int(c) % n) * cw sx := (int(c) % n) * cw
sy := (int(c) / n) * ch sy := (int(c) / n) * ch
r := image.Rect(sx, sy, sx+cw, sy+ch) r.Min.X = sx
r.Min.Y = sy
r.Max.X = sx + cw
r.Max.Y = sy + ch
op.SourceRect = &r op.SourceRect = &r
op.GeoM.Reset() op.GeoM.Reset()
op.GeoM.Translate(float64(x), float64(y)) op.GeoM.Translate(float64(x), float64(y))