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graphics: Refactoring

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This commit is contained in:
Hajime Hoshi 2018-10-28 01:39:12 +09:00
parent 5f04f05cb1
commit 170f0fcaa9
1 changed files with 34 additions and 33 deletions
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67
image.go
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@ -53,7 +53,7 @@ func (m *mipmap) original() *shareable.Image {
func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
if level == 0 {
return m.orig
panic("not reached")
}
imgs, ok := m.imgs[r]
@ -70,7 +70,13 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
}
for len(imgs) < idx+1 {
src := m.level(r, len(imgs))
l := len(imgs)
var src *shareable.Image
if l > 0 {
src = m.level(r, l)
} else {
src = m.orig
}
w2 := w / 2
h2 := h / 2
if w2 == 0 || h2 == 0 {
@ -83,7 +89,7 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
s = shareable.NewImage(w2, h2)
}
var vs []float32
if len(imgs) == 0 {
if l == 0 {
vs = src.QuadVertices(r.Min.X, r.Min.Y, r.Max.X, r.Max.Y, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
} else {
vs = src.QuadVertices(0, 0, w, h, 0.5, 0, 0, 0.5, 0, 0, 1, 1, 1, 1)
@ -364,37 +370,32 @@ func (i *Image) drawImage(img *Image, options *DrawImageOptions) {
level = 6
}
// TODO: Move this logic to mipmap?
if src := img.mipmap.level(image.Rect(sx0, sy0, sx1, sy1), level); src != nil {
colorm := options.ColorM.impl
cr, cg, cb, ca := float32(1), float32(1), float32(1), float32(1)
if colorm.ScaleOnly() {
body, _ := colorm.UnsafeElements()
cr = body[0]
cg = body[5]
cb = body[10]
ca = body[15]
}
var vs []float32
// TODO: This is too tricky: src is a whole image when level == 0,
// or a part of the image when level > 0. Do refactoring.
if level == 0 {
vs = src.QuadVertices(sx0, sy0, sx1, sy1, a, b, c, d, tx, ty, cr, cg, cb, ca)
} else {
w, h := src.Size()
s := 1 << uint(level)
a *= float32(s)
b *= float32(s)
c *= float32(s)
d *= float32(s)
vs = src.QuadVertices(0, 0, w, h, a, b, c, d, tx, ty, cr, cg, cb, ca)
}
// TODO: Add (*mipmap).drawImage and move the below code.
colorm := options.ColorM.impl
cr, cg, cb, ca := float32(1), float32(1), float32(1), float32(1)
if colorm.ScaleOnly() {
body, _ := colorm.UnsafeElements()
cr = body[0]
cg = body[5]
cb = body[10]
ca = body[15]
colorm = nil
}
if level == 0 {
src := img.mipmap.original()
vs := src.QuadVertices(sx0, sy0, sx1, sy1, a, b, c, d, tx, ty, cr, cg, cb, ca)
is := graphicsutil.QuadIndices()
i.mipmap.original().DrawImage(src, vs, is, colorm, mode, filter)
} else if src := img.mipmap.level(image.Rect(sx0, sy0, sx1, sy1), level); src != nil {
w, h := src.Size()
s := 1 << uint(level)
a *= float32(s)
b *= float32(s)
c *= float32(s)
d *= float32(s)
vs := src.QuadVertices(0, 0, w, h, a, b, c, d, tx, ty, cr, cg, cb, ca)
is := graphicsutil.QuadIndices()
if colorm.ScaleOnly() {
colorm = nil
}
i.mipmap.original().DrawImage(src, vs, is, colorm, mode, filter)
}
i.disposeMipmaps()