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Simplify internal API not to return errors

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This commit is contained in:
Hajime Hoshi 2017-03-04 00:44:41 +09:00
parent 33ff25cc40
commit 1c7ce07edf
2 changed files with 16 additions and 27 deletions
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34
image.go
View File

@ -76,19 +76,19 @@ func (i *images) resolveStalePixels(context *opengl.Context) error {
return nil
}
func (i *images) resetPixelsIfDependingOn(target *Image, context *opengl.Context) error {
func (i *images) resetPixelsIfDependingOn(target *Image, context *opengl.Context) {
i.m.Lock()
defer i.m.Unlock()
if i.lastChecked == target.impl {
return nil
return
}
i.lastChecked = target.impl
for img := range i.images {
if err := img.resetPixelsIfDependingOn(target.impl, context); err != nil {
return err
}
if target.impl.isDisposed() {
return
}
for img := range i.images {
img.resetPixelsIfDependingOn(target.impl, context)
}
return nil
}
func (i *images) restore(context *opengl.Context) error {
@ -146,9 +146,7 @@ func (i *Image) Size() (width, height int) {
//
// This function is concurrent-safe.
func (i *Image) Clear() error {
if err := theImagesForRestoring.resetPixelsIfDependingOn(i, glContext()); err != nil {
return err
}
theImagesForRestoring.resetPixelsIfDependingOn(i, glContext())
return i.impl.Fill(color.Transparent)
}
@ -156,9 +154,7 @@ func (i *Image) Clear() error {
//
// This function is concurrent-safe.
func (i *Image) Fill(clr color.Color) error {
if err := theImagesForRestoring.resetPixelsIfDependingOn(i, glContext()); err != nil {
return err
}
theImagesForRestoring.resetPixelsIfDependingOn(i, glContext())
return i.impl.Fill(clr)
}
@ -181,9 +177,7 @@ func (i *Image) Fill(clr color.Color) error {
//
// This function is concurrent-safe.
func (i *Image) DrawImage(image *Image, options *DrawImageOptions) error {
if err := theImagesForRestoring.resetPixelsIfDependingOn(i, glContext()); err != nil {
return err
}
theImagesForRestoring.resetPixelsIfDependingOn(i, glContext())
return i.impl.DrawImage(image, options)
}
@ -223,9 +217,7 @@ func (i *Image) Dispose() error {
if i.impl.isDisposed() {
return nil
}
if err := theImagesForRestoring.resetPixelsIfDependingOn(i, glContext()); err != nil {
return err
}
theImagesForRestoring.resetPixelsIfDependingOn(i, glContext())
return i.impl.Dispose()
}
@ -237,9 +229,7 @@ func (i *Image) Dispose() error {
//
// This function is concurrent-safe.
func (i *Image) ReplacePixels(p []uint8) error {
if err := theImagesForRestoring.resetPixelsIfDependingOn(i, glContext()); err != nil {
return err
}
theImagesForRestoring.resetPixelsIfDependingOn(i, glContext())
return i.impl.ReplacePixels(p)
}

9
imageimpl.go
View File

@ -173,22 +173,21 @@ func (i *imageImpl) resolveStalePixels(context *opengl.Context) error {
return nil
}
func (i *imageImpl) resetPixelsIfDependingOn(target *imageImpl, context *opengl.Context) error {
func (i *imageImpl) resetPixelsIfDependingOn(target *imageImpl, context *opengl.Context) {
i.m.Lock()
defer i.m.Unlock()
if i == target {
return nil
return
}
if i.restorable == nil {
return nil
return
}
if target.isDisposed() {
return errors.New("ebiten: target is already disposed")
panic("ebiten: target must not be disposed")
}
// target is an image that is about to be tried mutating.
// If pixels object is related to that image, the pixels must be reset.
i.restorable.MakeStaleIfDependingOn(target.restorable)
return nil
}
func (i *imageImpl) hasDependency() bool {