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ebiten: add geoM argument to DrawFinalScreen

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Updates #2046
This commit is contained in:
Hajime Hoshi 2022-10-14 23:35:55 +09:00
parent 596efc86fe
commit 599571c7a7
3 changed files with 16 additions and 12 deletions
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5
examples/flappy/main.go
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@ -455,7 +455,7 @@ type GameWithCRTEffect struct {
crtShader *ebiten.Shader
}
func (g *GameWithCRTEffect) DrawFinalScreen(screen ebiten.FinalScreen, offscreen *ebiten.Image) {
func (g *GameWithCRTEffect) DrawFinalScreen(screen ebiten.FinalScreen, offscreen *ebiten.Image, geoM ebiten.GeoM) {
if g.crtShader == nil {
s, err := ebiten.NewShader(crtGo)
if err != nil {
@ -465,11 +465,10 @@ func (g *GameWithCRTEffect) DrawFinalScreen(screen ebiten.FinalScreen, offscreen
}
ow, oh := offscreen.Size()
sw, sh := screen.Size()
op := &ebiten.DrawRectShaderOptions{}
op.Images[0] = offscreen
op.GeoM.Scale(float64(sw)/float64(ow), float64(sh)/float64(oh))
op.GeoM = geoM
screen.DrawRectShader(ow, oh, g.crtShader, op)
}

17
gameforui.go
View File

@ -148,29 +148,30 @@ func (g *gameForUI) DrawOffscreen() error {
}
func (g *gameForUI) DrawScreen() {
scale, offsetX, offsetY := g.ScreenScaleAndOffsets()
var geoM GeoM
geoM.Scale(scale, scale)
geoM.Translate(offsetX, offsetY)
if d, ok := g.game.(FinalScreenDrawer); ok {
d.DrawFinalScreen(g.screen, g.offscreen)
d.DrawFinalScreen(g.screen, g.offscreen, geoM)
return
}
scale, offsetX, offsetY := g.ScreenScaleAndOffsets()
switch {
case !isScreenFilterEnabled(), math.Floor(scale) == scale:
op := &DrawImageOptions{}
op.GeoM.Scale(scale, scale)
op.GeoM.Translate(offsetX, offsetY)
op.GeoM = geoM
g.screen.DrawImage(g.offscreen, op)
case scale < 1:
op := &DrawImageOptions{}
op.GeoM.Scale(scale, scale)
op.GeoM.Translate(offsetX, offsetY)
op.GeoM = geoM
op.Filter = FilterLinear
g.screen.DrawImage(g.offscreen, op)
default:
op := &DrawRectShaderOptions{}
op.Images[0] = g.offscreen
op.GeoM.Scale(scale, scale)
op.GeoM.Translate(offsetX, offsetY)
op.GeoM = geoM
w, h := g.offscreen.Size()
g.screen.DrawRectShader(w, h, g.screenShader, op)
}

6
run.go
View File

@ -107,7 +107,11 @@ type FinalScreenDrawer interface {
// DrawFinalScreen draws the final screen.
// If a game implementing FinalScreenDrawer is passed to RunGame, DrawFinalScreen is called after Draw.
// screen is the final screen. offscreen is the offscreen modified at Draw.
DrawFinalScreen(screen FinalScreen, offscreen *Image)
//
// geoM is the default geometry matrix to render the offscreen onto the final screen.
// geoM scales the offscreen to fit the final screen without changing the aspect ratio, and
// translates the offscreen to put it on the center of the final screen.
DrawFinalScreen(screen FinalScreen, offscreen *Image, geoM GeoM)
}
// DefaultTPS represents a default ticks per second, that represents how many times game updating happens in a second.