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Code Issues Releases Wiki Activity

Another sprite optimization experiment. (#139)

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* Attempting to use normal ebiten frames, but lazily loading them.
This commit is contained in:
Tim Sarbin 2019-11-10 17:52:45 -05:00 committed by GitHub
parent 1ec7d2379e
commit a9136eda0a
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 6 additions and 38 deletions
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44
d2render/sprite.go
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@ -2,7 +2,6 @@ package d2render
import (
"encoding/binary"
"image"
"image/color"
"log"
"sync"
@ -19,9 +18,7 @@ import (
type Sprite struct {
Directions uint32
FramesPerDirection uint32
atlas *ebiten.Image
atlasBytes []byte
Frames []SpriteFrame
Frames []*SpriteFrame
SpecialFrameTime int
StopOnLastFrame bool
X, Y int
@ -73,14 +70,14 @@ func CreateSprite(data []byte, palette d2datadict.PaletteRec) Sprite {
framePointers[i] = binary.LittleEndian.Uint32(data[dataPointer : dataPointer+4])
dataPointer += 4
}
result.Frames = make([]SpriteFrame, totalFrames)
result.Frames = make([]*SpriteFrame, totalFrames)
wg := sync.WaitGroup{}
wg.Add(int(totalFrames))
for i := uint32(0); i < totalFrames; i++ {
go func(i uint32) {
defer wg.Done()
dataPointer := framePointers[i]
result.Frames[i] = SpriteFrame{}
result.Frames[i] = &SpriteFrame{}
result.Frames[i].Flip = binary.LittleEndian.Uint32(data[dataPointer : dataPointer+4])
dataPointer += 4
result.Frames[i].Width = binary.LittleEndian.Uint32(data[dataPointer : dataPointer+4])
@ -155,22 +152,6 @@ func CreateSprite(data []byte, palette d2datadict.PaletteRec) Sprite {
}
totalWidth += curMaxWidth
}
result.atlas, _ = ebiten.NewImage(totalWidth, totalHeight, ebiten.FilterNearest)
result.atlasBytes = make([]byte, totalWidth*totalHeight*4)
frame = 0
curX := 0
curY := 0
for d := 0; d < int(result.Directions); d++ {
curMaxWidth := 0
for f := 0; f < int(result.FramesPerDirection); f++ {
curMaxWidth = int(d2helper.Max(uint32(curMaxWidth), result.Frames[frame].Width))
result.Frames[frame].Image = result.atlas.SubImage(image.Rect(curX, curY, curX+int(result.Frames[frame].Width), curY+int(result.Frames[frame].Height))).(*ebiten.Image)
curY += int(result.Frames[frame].Height)
frame++
}
curX += curMaxWidth
curY = 0
}
result.valid = true
return result
}
@ -183,22 +164,9 @@ func (v *Sprite) cacheFrame(frame int) {
if v.Frames[frame].cached {
return
}
r := v.Frames[frame].Image.Bounds().Min
curX := r.X
curY := r.Y
totalWidth := v.atlas.Bounds().Max.X
for y := 0; y < int(v.Frames[frame].Height); y++ {
for x := 0; x < int(v.Frames[frame].Width); x++ {
pix := (x + (y * int(v.Frames[frame].Width))) * 4
idx := (curX + x + ((curY + y) * totalWidth)) * 4
v.atlasBytes[idx] = v.Frames[frame].FrameData[pix]
v.atlasBytes[idx+1] = v.Frames[frame].FrameData[pix+1]
v.atlasBytes[idx+2] = v.Frames[frame].FrameData[pix+2]
v.atlasBytes[idx+3] = v.Frames[frame].FrameData[pix+3]
}
}
if err := v.atlas.ReplacePixels(v.atlasBytes); err != nil {
log.Panic(err.Error())
v.Frames[frame].Image, _ = ebiten.NewImage(int(v.Frames[frame].Width), int(v.Frames[frame].Height), ebiten.FilterNearest)
if err := v.Frames[frame].Image.ReplacePixels(v.Frames[frame].FrameData); err != nil {
log.Panicf(err.Error())
}
v.Frames[frame].cached = true
}