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graphics: Move creating mipmap logic to shareableImages

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This commit is contained in:
Hajime Hoshi 2018-10-25 01:35:34 +09:00
parent 4cd3e3ae30
commit 022c40aa17
1 changed files with 26 additions and 29 deletions
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55
image.go
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@ -46,6 +46,31 @@ func newShareableImages(s *shareable.Image) *shareableImages {
}
func (s *shareableImages) level(i int) *shareable.Image {
w, h := s.imgs[len(s.imgs) - 1].Size()
for len(s.imgs) < i+1 {
lastl := len(s.imgs) - 1
src := s.imgs[lastl]
w2 := w / 2
h2 := h / 2
if w2 == 0 || h2 == 0 {
return nil
}
var sh *shareable.Image
if s.imgs[0].IsVolatile() {
sh = shareable.NewVolatileImage(w2, h2)
} else {
sh = shareable.NewImage(w2, h2)
}
vs := src.QuadVertices(0, 0, w, h, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
is := graphicsutil.QuadIndices()
sh.DrawImage(src, vs, is, nil, opengl.CompositeModeCopy, graphics.FilterLinear)
s.imgs = append(s.imgs, sh)
w = w2
h = h2
}
if len(s.imgs) <= i {
return nil
}
return s.imgs[i]
}
@ -53,10 +78,6 @@ func (s *shareableImages) len() int {
return len(s.imgs)
}
func (s *shareableImages) append(img *shareable.Image) {
s.imgs = append(s.imgs, img)
}
func (s *shareableImages) isDisposed() bool {
return len(s.imgs) == 0
}
@ -330,31 +351,7 @@ func (i *Image) drawImage(img *Image, options *DrawImageOptions) {
sy1 = sy1 / s
}
w, h = img.shareableImages.level(img.shareableImages.len() - 1).Size()
for img.shareableImages.len() < level+1 {
lastl := img.shareableImages.len() - 1
src := img.shareableImages.level(lastl)
w2 := w / 2
h2 := h / 2
if w2 == 0 || h2 == 0 {
break
}
var s *shareable.Image
if img.shareableImages.level(0).IsVolatile() {
s = shareable.NewVolatileImage(w2, h2)
} else {
s = shareable.NewImage(w2, h2)
}
vs := src.QuadVertices(0, 0, w, h, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
is := graphicsutil.QuadIndices()
s.DrawImage(src, vs, is, nil, opengl.CompositeModeCopy, graphics.FilterLinear)
img.shareableImages.append(s)
w = w2
h = h2
}
if level < img.shareableImages.len() {
src := img.shareableImages.level(level)
if src := img.shareableImages.level(level); src != nil {
colorm := options.ColorM.impl
cr, cg, cb, ca := float32(1), float32(1), float32(1), float32(1)
if colorm.ScaleOnly() {