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graphics: Refactoring: Remove (*Image).restorable

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This commit is contained in:
Hajime Hoshi 2018-03-10 23:14:59 +09:00
parent 2def3e5e6e
commit afda41a5ed
3 changed files with 107 additions and 138 deletions
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2
graphicscontext.go
View File

@ -134,7 +134,7 @@ func (c *graphicsContext) needsRestoring() (bool, error) {
if web.IsBrowser() {
return c.invalidated, nil
}
return c.offscreen.restorable.IsInvalidated()
return c.offscreen.sharedImagePart.IsInvalidated()
}
func (c *graphicsContext) restoreIfNeeded() error {

118
image.go
View File

@ -52,8 +52,6 @@ type Image struct {
// See strings.Builder for similar examples.
addr *Image
// restorable and sharedImagePart are exclusive.
restorable *restorable.Image
sharedImagePart *sharedImagePart
filter Filter
@ -73,7 +71,7 @@ func (i *Image) copyCheck() {
// Size returns the size of the image.
func (i *Image) Size() (width, height int) {
_, _, w, h := i.region()
_, _, w, h := i.sharedImagePart.region()
return w, h
}
@ -100,23 +98,6 @@ func (i *Image) Fill(clr color.Color) error {
return nil
}
func (i *Image) ensureNotShared() {
if i.sharedImagePart == nil {
return
}
if i.restorable != nil {
panic("not reached")
}
s := i.sharedImagePart
x, y, w, h := s.region()
i.restorable = restorable.NewImage(w, h, false)
i.sharedImagePart = nil
i.restorable.DrawImage(s.image(), x, y, w, h, nil, nil, opengl.CompositeModeCopy, graphics.FilterNearest)
s.Dispose()
}
func (i *Image) fill(r, g, b, a uint8) {
wd, hd := i.Size()
ws, hs := emptyImage.Size()
@ -137,7 +118,7 @@ func (i *Image) fill(r, g, b, a uint8) {
}
func (i *Image) isDisposed() bool {
return i.restorable == nil && i.sharedImagePart == nil
return i.sharedImagePart == nil
}
// DrawImage draws the given image on the image i.
@ -175,10 +156,7 @@ func (i *Image) DrawImage(img *Image, options *DrawImageOptions) error {
if img.isDisposed() {
panic("ebiten: the given image to DrawImage must not be disposed")
}
i.ensureNotShared()
if i.restorable == nil {
panic("not reached")
}
i.sharedImagePart.ensureNotShared()
// Compare i and img after ensuring i is not shared, or
// i and img might share the same texture even though i != img.
@ -253,7 +231,7 @@ func (i *Image) DrawImage(img *Image, options *DrawImageOptions) error {
geom = g
}
dx, dy, _, _ := img.region()
dx, dy, _, _ := img.sharedImagePart.region()
sx0 += dx
sy0 += dy
sx1 += dx
@ -268,7 +246,7 @@ func (i *Image) DrawImage(img *Image, options *DrawImageOptions) error {
filter = graphics.Filter(img.filter)
}
i.restorable.DrawImage(img.restorableImage(), sx0, sy0, sx1, sy1, geom, options.ColorM.impl, mode, filter)
i.sharedImagePart.image().DrawImage(img.sharedImagePart.image(), sx0, sy0, sx1, sy1, geom, options.ColorM.impl, mode, filter)
return nil
}
@ -294,15 +272,6 @@ func (i *Image) At(x, y int) color.Color {
if i.isDisposed() {
return color.RGBA{}
}
switch {
case i.restorable != nil:
// TODO: Error should be delayed until flushing. Do not panic here.
clr, err := i.restorable.At(x, y)
if err != nil {
panic(err)
}
return clr
case i.sharedImagePart != nil:
ox, oy, w, h := i.sharedImagePart.region()
if x < 0 || y < 0 || x >= w || y >= h {
return color.RGBA{}
@ -312,9 +281,6 @@ func (i *Image) At(x, y int) color.Color {
panic(err)
}
return clr
default:
panic("not reached")
}
}
// Dispose disposes the image data. After disposing, most of image functions do nothing and returns meaningless values.
@ -329,41 +295,12 @@ func (i *Image) Dispose() error {
if i.isDisposed() {
return nil
}
switch {
case i.restorable != nil:
i.restorable.Dispose()
i.restorable = nil
case i.sharedImagePart != nil:
i.sharedImagePart.Dispose()
i.sharedImagePart = nil
default:
panic("not reached")
}
runtime.SetFinalizer(i, nil)
return nil
}
func (i *Image) region() (x, y, width, height int) {
if i.restorable != nil {
w, h := i.restorable.Size()
return 0, 0, w, h
}
if i.sharedImagePart != nil {
return i.sharedImagePart.region()
}
panic("not reached")
}
func (i *Image) restorableImage() *restorable.Image {
if i.restorable != nil {
return i.restorable
}
if i.sharedImagePart != nil {
return i.sharedImagePart.image()
}
panic("not reached")
}
// ReplacePixels replaces the pixels of the image with p.
//
// The given p must represent RGBA pre-multiplied alpha values. len(p) must equal to 4 * (image width) * (image height).
@ -380,11 +317,11 @@ func (i *Image) ReplacePixels(p []byte) error {
if i.isDisposed() {
return nil
}
x, y, w, h := i.region()
x, y, w, h := i.sharedImagePart.region()
if l := 4 * w * h; len(p) != l {
panic(fmt.Sprintf("ebiten: len(p) was %d but must be %d", len(p), l))
}
i.restorableImage().ReplacePixels(p, x, y, w, h)
i.sharedImagePart.image().ReplacePixels(p, x, y, w, h)
return nil
}
@ -436,20 +373,11 @@ type DrawImageOptions struct {
//
// Error returned by NewImage is always nil as of 1.5.0-alpha.
func NewImage(width, height int, filter Filter) (*Image, error) {
var i *Image
s := newSharedImagePart(width, height)
if s != nil {
i = &Image{
i := &Image{
sharedImagePart: s,
filter: filter,
}
} else {
r := restorable.NewImage(width, height, false)
i = &Image{
restorable: r,
filter: filter,
}
}
i.fill(0, 0, 0, 0)
runtime.SetFinalizer(i, (*Image).Dispose)
return i, nil
@ -457,20 +385,11 @@ func NewImage(width, height int, filter Filter) (*Image, error) {
// newImageWithoutInit creates an empty image without initialization.
func newImageWithoutInit(width, height int) *Image {
var i *Image
s := newSharedImagePart(width, height)
if s != nil {
i = &Image{
i := &Image{
sharedImagePart: s,
filter: FilterDefault,
}
} else {
r := restorable.NewImage(width, height, false)
i = &Image{
restorable: r,
filter: FilterDefault,
}
}
runtime.SetFinalizer(i, (*Image).Dispose)
return i
}
@ -493,7 +412,11 @@ func newImageWithoutInit(width, height int) *Image {
func newVolatileImage(width, height int, filter Filter) *Image {
r := restorable.NewImage(width, height, true)
i := &Image{
sharedImagePart: &sharedImagePart{
sharedImage: &sharedImage{
restorable: r,
},
},
filter: filter,
}
i.fill(0, 0, 0, 0)
@ -514,20 +437,11 @@ func NewImageFromImage(source image.Image, filter Filter) (*Image, error) {
width, height := size.X, size.Y
var i *Image
s := newSharedImagePart(width, height)
if s != nil {
i = &Image{
i := &Image{
sharedImagePart: s,
filter: filter,
}
} else {
r := restorable.NewImage(width, height, false)
i = &Image{
restorable: r,
filter: filter,
}
}
runtime.SetFinalizer(i, (*Image).Dispose)
_ = i.ReplacePixels(graphicsutil.CopyImage(source))
@ -537,7 +451,11 @@ func NewImageFromImage(source image.Image, filter Filter) (*Image, error) {
func newImageWithScreenFramebuffer(width, height int) *Image {
r := restorable.NewScreenFramebufferImage(width, height)
i := &Image{
sharedImagePart: &sharedImagePart{
sharedImage: &sharedImage{
restorable: r,
},
},
filter: FilterDefault,
}
runtime.SetFinalizer(i, (*Image).Dispose)

59
shared.go
View File

@ -15,6 +15,8 @@
package ebiten
import (
"github.com/hajimehoshi/ebiten/internal/graphics"
"github.com/hajimehoshi/ebiten/internal/opengl"
"github.com/hajimehoshi/ebiten/internal/packing"
"github.com/hajimehoshi/ebiten/internal/restorable"
"github.com/hajimehoshi/ebiten/internal/sync"
@ -31,22 +33,62 @@ var (
type sharedImagePart struct {
sharedImage *sharedImage
// If node is nil, the image is not shared.
node *packing.Node
}
func (s *sharedImagePart) ensureNotShared() {
if s.node == nil {
return
}
x, y, w, h := s.region()
newImg := restorable.NewImage(w, h, false)
newImg.DrawImage(s.sharedImage.restorable, x, y, w, h, nil, nil, opengl.CompositeModeCopy, graphics.FilterNearest)
s.Dispose()
s.sharedImage = &sharedImage{
restorable: newImg,
}
}
func (s *sharedImagePart) image() *restorable.Image {
return s.sharedImage.restorable
}
func (s *sharedImagePart) region() (x, y, width, height int) {
if s.node == nil {
w, h := s.sharedImage.restorable.Size()
return 0, 0, w, h
}
return s.node.Region()
}
func (s *sharedImagePart) isDisposed() bool {
return s.sharedImage == nil
}
func (s *sharedImagePart) Dispose() {
s.sharedImage.page.Free(s.node)
if s.sharedImage.page.IsEmpty() {
if s.isDisposed() {
return
}
defer func() {
s.sharedImage = nil
s.node = nil
}()
if s.node == nil {
s.sharedImage.restorable.Dispose()
s.sharedImage.restorable = nil
return
}
s.sharedImage.page.Free(s.node)
if !s.sharedImage.page.IsEmpty() {
return
}
index := -1
for i, sh := range theSharedImages {
if sh == s.sharedImage {
@ -59,6 +101,9 @@ func (s *sharedImagePart) Dispose() {
}
theSharedImages = append(theSharedImages[:index], theSharedImages[index+1:]...)
}
func (s *sharedImagePart) IsInvalidated() (bool, error) {
return s.sharedImage.restorable.IsInvalidated()
}
var sharedImageLock sync.Mutex
@ -70,8 +115,14 @@ func newSharedImagePart(width, height int) *sharedImagePart {
defer sharedImageLock.Unlock()
if width > maxSize || height > maxSize {
return nil
s := &sharedImage{
restorable: restorable.NewImage(width, height, false),
}
return &sharedImagePart{
sharedImage: s,
}
}
for _, s := range theSharedImages {
if n := s.page.Alloc(width, height); n != nil {
return &sharedImagePart{