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restorable: Reduce Image() usage and remove MakeStale()

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This commit is contained in:
Hajime Hoshi 2016-09-03 23:54:52 +09:00
parent e7558036ae
commit 82febc9c6e
2 changed files with 15 additions and 17 deletions
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9
imageimpl.go
View File

@ -180,7 +180,7 @@ func (i *imageImpl) At(x, y int, context *opengl.Context) color.Color {
return color.Transparent
}
idx := 4*x + 4*y*i.width
clr, err := i.restorable.At(idx, i.restorable.Image(), context)
clr, err := i.restorable.At(idx, context)
if err != nil {
panic(err)
}
@ -196,7 +196,7 @@ func (i *imageImpl) resolveStalePixels(context *opengl.Context) error {
if i.volatile {
return nil
}
if err := i.restorable.ReadPixelsFromVRAMIfStale(i.restorable.Image(), context); err != nil {
if err := i.restorable.ReadPixelsFromVRAMIfStale(context); err != nil {
return err
}
return nil
@ -216,10 +216,7 @@ func (i *imageImpl) resetPixelsIfDependingOn(target *imageImpl, context *opengl.
}
// target is an image that is about to be tried mutating.
// If pixels object is related to that image, the pixels must be reset.
if !i.restorable.DependsOn(target.restorable.Image()) {
return nil
}
i.restorable.MakeStale()
i.restorable.MakeStaleIfDependingOn(target.restorable)
return nil
}

23
internal/restorable/image.go
View File

@ -73,7 +73,7 @@ func NewScreenFramebufferImage(width, height int) (*Image, error) {
}, nil
}
func (p *Image) MakeStale() {
func (p *Image) makeStale() {
p.basePixels = nil
p.baseColor = color.RGBA{}
p.drawImageHistory = nil
@ -117,7 +117,7 @@ func (p *Image) ReplacePixels(pixels []uint8) {
func (p *Image) DrawImage(img *Image, vertices []int16, geom graphics.Matrix, colorm graphics.Matrix, mode opengl.CompositeMode) error {
if img.stale {
p.MakeStale()
p.makeStale()
} else {
p.appendDrawImageHistory(img.image, vertices, geom, colorm, mode)
}
@ -152,9 +152,9 @@ func (p *Image) appendDrawImageHistory(image *graphics.Image, vertices []int16,
//
// Note that this must not be called until context is available.
// This means Pixels members must match with acutal state in VRAM.
func (p *Image) At(idx int, image *graphics.Image, context *opengl.Context) (color.RGBA, error) {
func (p *Image) At(idx int, context *opengl.Context) (color.RGBA, error) {
if p.basePixels == nil || p.drawImageHistory != nil || p.stale {
if err := p.readPixelsFromVRAM(image, context); err != nil {
if err := p.readPixelsFromVRAM(p.image, context); err != nil {
return color.RGBA{}, err
}
}
@ -162,17 +162,18 @@ func (p *Image) At(idx int, image *graphics.Image, context *opengl.Context) (col
return color.RGBA{r, g, b, a}, nil
}
func (p *Image) DependsOn(target *graphics.Image) bool {
func (p *Image) MakeStaleIfDependingOn(target *Image) {
if p.stale {
return false
return
}
// TODO: Performance is bad when drawImageHistory is too many.
for _, c := range p.drawImageHistory {
if c.image == target {
return true
if c.image == target.image {
p.makeStale()
return
}
}
return false
return
}
func (p *Image) readPixelsFromVRAM(image *graphics.Image, context *opengl.Context) error {
@ -187,11 +188,11 @@ func (p *Image) readPixelsFromVRAM(image *graphics.Image, context *opengl.Contex
return nil
}
func (p *Image) ReadPixelsFromVRAMIfStale(image *graphics.Image, context *opengl.Context) error {
func (p *Image) ReadPixelsFromVRAMIfStale(context *opengl.Context) error {
if !p.stale {
return nil
}
return p.readPixelsFromVRAM(image, context)
return p.readPixelsFromVRAM(p.image, context)
}
func (p *Image) HasDependency() bool {