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graphics: Refactoring: Use DrawImageOptions.Filter

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This commit is contained in:
Hajime Hoshi 2018-02-22 01:58:50 +09:00
parent 1179c12d35
commit 4aa5ee032f
1 changed files with 6 additions and 5 deletions
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11
graphicscontext.go
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@ -57,12 +57,12 @@ func (c *graphicsContext) SetSize(screenWidth, screenHeight int, screenScale flo
if c.offscreen2 != nil {
_ = c.offscreen2.Dispose()
}
offscreen := newVolatileImage(screenWidth, screenHeight, FilterNearest)
offscreen := newVolatileImage(screenWidth, screenHeight, FilterDefault)
intScreenScale := int(math.Ceil(screenScale))
w := screenWidth * intScreenScale
h := screenHeight * intScreenScale
offscreen2 := newVolatileImage(w, h, FilterLinear)
offscreen2 := newVolatileImage(w, h, FilterDefault)
w = int(float64(screenWidth) * screenScale)
h = int(float64(screenHeight) * screenScale)
@ -87,7 +87,7 @@ func (c *graphicsContext) initializeIfNeeded() error {
return nil
}
func drawWithFittingScale(dst *Image, src *Image) {
func drawWithFittingScale(dst *Image, src *Image, filter Filter) {
wd, hd := dst.Size()
ws, hs := src.Size()
sw := float64(wd) / float64(ws)
@ -95,6 +95,7 @@ func drawWithFittingScale(dst *Image, src *Image) {
op := &DrawImageOptions{}
op.GeoM.Scale(sw, sh)
op.CompositeMode = CompositeModeCopy
op.Filter = filter
_ = dst.DrawImage(src, op)
}
@ -116,8 +117,8 @@ func (c *graphicsContext) Update(afterFrameUpdate func()) error {
afterFrameUpdate()
}
if 0 < updateCount {
drawWithFittingScale(c.offscreen2, c.offscreen)
drawWithFittingScale(c.screen, c.offscreen2)
drawWithFittingScale(c.offscreen2, c.offscreen, FilterNearest)
drawWithFittingScale(c.screen, c.offscreen2, FilterLinear)
}
if err := restorable.ResolveStaleImages(); err != nil {