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Bug fix: Need to clear the default framebuffer

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This commit is contained in:
Hajime Hoshi 2014-12-23 02:34:45 +09:00
parent 16180a8925
commit b3581d1c7a
2 changed files with 20 additions and 19 deletions
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33
example/image/main.go
View File

@ -29,51 +29,50 @@ const (
screenHeight = 240
)
type Game struct {
var (
count int
horizontalCount int
verticalCount int
gophersImage *ebiten.Image
}
)
func (g *Game) Update(r *ebiten.Image) error {
g.count++
func Update(screen *ebiten.Image) error {
count++
if ebiten.IsKeyPressed(ebiten.KeyLeft) {
g.horizontalCount--
horizontalCount--
}
if ebiten.IsKeyPressed(ebiten.KeyRight) {
g.horizontalCount++
horizontalCount++
}
if ebiten.IsKeyPressed(ebiten.KeyDown) {
g.verticalCount--
verticalCount--
}
if ebiten.IsKeyPressed(ebiten.KeyUp) {
g.verticalCount++
verticalCount++
}
w, h := g.gophersImage.Size()
w, h := gophersImage.Size()
geo := ebiten.TranslateGeometry(-float64(w)/2, -float64(h)/2)
scaleX := 0.5 * math.Pow(1.05, float64(g.horizontalCount))
scaleY := 0.5 * math.Pow(1.05, float64(g.verticalCount))
scaleX := 0.5 * math.Pow(1.05, float64(horizontalCount))
scaleY := 0.5 * math.Pow(1.05, float64(verticalCount))
geo.Concat(ebiten.ScaleGeometry(scaleX, scaleY))
geo.Concat(ebiten.RotateGeometry(float64(g.count%720) * 2 * math.Pi / 720))
geo.Concat(ebiten.RotateGeometry(float64(count%720) * 2 * math.Pi / 720))
geo.Concat(ebiten.TranslateGeometry(screenWidth/2, screenHeight/2))
//clr := ebiten.RotateHue(float64(g.count%180) * 2 * math.Pi / 180)
//clr := ebiten.RotateHue(float64(count%180) * 2 * math.Pi / 180)
clr := ebiten.ColorMatrixI()
if err := ebiten.DrawWholeImage(r, g.gophersImage, geo, clr); err != nil {
if err := ebiten.DrawWholeImage(screen, gophersImage, geo, clr); err != nil {
return err
}
return nil
}
func main() {
g := new(Game)
var err error
g.gophersImage, _, err = ebitenutil.NewImageFromFile("images/gophers.jpg", ebiten.FilterNearest)
gophersImage, _, err = ebitenutil.NewImageFromFile("images/gophers.jpg", ebiten.FilterNearest)
if err != nil {
log.Fatal(err)
}
if err := ebiten.Run(g.Update, screenWidth, screenHeight, 2, "Image (Ebiten Demo)"); err != nil {
if err := ebiten.Run(Update, screenWidth, screenHeight, 2, "Image (Ebiten Demo)"); err != nil {
log.Fatal(err)
}
}

6
graphicscontext.go
View File

@ -64,8 +64,10 @@ func (c *graphicsContext) preUpdate() error {
}
func (c *graphicsContext) postUpdate() error {
// We don't need to clear the default render target (framebuffer).
// For the default framebuffer, a special shader is used.
if err := c.defaultR.Clear(); err != nil {
return err
}
scale := float64(c.screenScale)
geo := ScaleGeometry(scale, scale)
clr := ColorMatrixI()