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shareable: Remove (*Image).Size()

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This commit is contained in:
Hajime Hoshi 2019-09-21 05:56:34 +09:00
parent 3023cc69c3
commit bc4d092710
2 changed files with 40 additions and 30 deletions
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4
internal/shareable/shareable.go
View File

@ -257,10 +257,6 @@ func (i *Image) region() (x, y, width, height int) {
return i.node.Region()
}
func (i *Image) Size() (width, height int) {
return i.width, i.height
}
// DrawTriangles draws triangles with the given image.
//
// The vertex floats are:

48
mipmap.go
View File

@ -29,12 +29,16 @@ import (
type levelToImage map[int]*shareable.Image
type mipmap struct {
width int
height int
orig *shareable.Image
imgs map[image.Rectangle]levelToImage
}
func newMipmap(width, height int) *mipmap {
return &mipmap{
width: width,
height: height,
orig: shareable.NewImage(width, height),
imgs: map[image.Rectangle]levelToImage{},
}
@ -42,6 +46,8 @@ func newMipmap(width, height int) *mipmap {
func newScreenFramebufferMipmap(width, height int) *mipmap {
return &mipmap{
width: width,
height: height,
orig: shareable.NewScreenFramebufferImage(width, height),
imgs: map[image.Rectangle]levelToImage{},
}
@ -67,7 +73,7 @@ func (m *mipmap) replacePixels(pix []byte) {
}
func (m *mipmap) size() (int, int) {
return m.orig.Size()
return m.width, m.height
}
func (m *mipmap) at(x, y int) (r, g, b, a byte) {
@ -124,7 +130,7 @@ func (m *mipmap) drawImage(src *mipmap, bounds image.Rectangle, geom *GeoM, colo
is := graphics.QuadIndices()
m.orig.DrawTriangles(src.orig, vs, is, colorm, mode, filter, driver.AddressClampToZero)
} else if shared := src.level(bounds, level); shared != nil {
w, h := shared.Size()
w, h := sizeForLevel(bounds.Dx(), bounds.Dy(), level)
s := pow2(level)
a *= s
b *= s
@ -197,7 +203,7 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
imgs[level] = nil
return nil
}
w, h := src.Size()
w, h := sizeForLevel(r.Dx(), r.Dy(), level-1)
vs = quadVertices(0, 0, w, h, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
filter = driver.FilterLinear
case level == -1:
@ -210,7 +216,7 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
imgs[level] = nil
return nil
}
w, h := src.Size()
w, h := sizeForLevel(r.Dx(), r.Dy(), level+1)
vs = quadVertices(0, 0, w, h, 2, 0, 0, 2, 0, 0, 1, 1, 1, 1)
filter = driver.FilterNearest
default:
@ -218,23 +224,11 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
}
is := graphics.QuadIndices()
size := r.Size()
w2, h2 := size.X, size.Y
if level > 0 {
for i := 0; i < level; i++ {
w2 /= 2
h2 /= 2
w2, h2 := sizeForLevel(r.Dx(), r.Dy(), level)
if w2 == 0 || h2 == 0 {
imgs[level] = nil
return nil
}
}
} else {
for i := 0; i < -level; i++ {
w2 *= 2
h2 *= 2
}
}
s := shareable.NewImage(w2, h2)
s.DrawTriangles(src, vs, is, nil, driver.CompositeModeCopy, filter, driver.AddressClampToZero)
imgs[level] = s
@ -242,6 +236,26 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
return imgs[level]
}
func sizeForLevel(origWidth, origHeight int, level int) (width, height int) {
width = origWidth
height = origHeight
if level > 0 {
for i := 0; i < level; i++ {
width /= 2
height /= 2
if width == 0 || height == 0 {
return 0, 0
}
}
} else {
for i := 0; i < -level; i++ {
width *= 2
height *= 2
}
}
return
}
func (m *mipmap) isDisposed() bool {
return m.orig == nil
}