artin/crt
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feat: optimize image allocations

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This commit is contained in:
Daniel Schmidt 2023-12-11 17:55:50 +01:00
parent ac7d8bf4c3
commit 902582a274
1 changed files with 16 additions and 6 deletions
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22
crt.go
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@ -60,6 +60,8 @@ type Window struct {
bgColors *image.RGBA
shader []shader.Shader
routine sync.Once
shaderByteBuffer []byte
shaderBuffer *ebiten.Image
lastBuffer *ebiten.Image
invalidateBuffer bool
}
@ -105,6 +107,7 @@ func NewGame(width int, height int, fonts Fonts, tty io.Reader, adapter InputAda
grid: grid,
tty: tty,
bgColors: image.NewRGBA(image.Rect(0, 0, cellsWidth*cellWidth, cellsHeight*cellHeight)),
lastBuffer: ebiten.NewImage(cellsWidth*cellWidth, cellsHeight*cellHeight),
cursorChar: "█",
cursorColor: color.RGBA{R: 255, G: 255, B: 255, A: 100},
onUpdate: func() {},
@ -550,9 +553,7 @@ func (g *Window) Draw(screen *ebiten.Image) {
bufferImage := g.lastBuffer
// Only draw the buffer if it's invalid
if bufferImage == nil || g.invalidateBuffer {
bufferImage = ebiten.NewImage(g.cellsWidth*g.cellWidth, g.cellsHeight*g.cellHeight)
if g.invalidateBuffer {
// Draw background
bufferImage.WritePixels(g.bgColors.Pix)
@ -585,13 +586,22 @@ func (g *Window) Draw(screen *ebiten.Image) {
// Draw shader
if g.shader != nil {
shaderBuffer := ebiten.NewImageFromImage(bufferImage)
if g.shaderBuffer == nil {
g.shaderBuffer = ebiten.NewImageFromImage(bufferImage)
} else {
bounds := g.shaderBuffer.Bounds()
if len(g.shaderByteBuffer) < 4*bounds.Dx()*bounds.Dy() {
g.shaderByteBuffer = make([]byte, 4*bounds.Dx()*bounds.Dy())
}
bufferImage.ReadPixels(g.shaderByteBuffer)
g.shaderBuffer.WritePixels(g.shaderByteBuffer)
}
for i := range g.shader {
_ = g.shader[i].Apply(screen, shaderBuffer)
_ = g.shader[i].Apply(screen, g.shaderBuffer)
if len(g.shader) > 0 {
shaderBuffer.DrawImage(screen, nil)
g.shaderBuffer.DrawImage(screen, nil)
}
}
} else {