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pixels: Rename functions

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This commit is contained in:
Hajime Hoshi 2016-07-27 02:50:53 +09:00
parent 459046f52a
commit 3724815f21
2 changed files with 10 additions and 12 deletions
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6
imageimpl.go
View File

@ -194,7 +194,7 @@ func (i *imageImpl) ensurePixels(context *opengl.Context) error {
if i.disposed {
return nil
}
if err := i.pixels.ResetIfStale(context); err != nil {
if err := i.pixels.ReadPixelsFromVRAMIfStale(context); err != nil {
return err
}
return nil
@ -222,7 +222,7 @@ func (i *imageImpl) resetPixelsIfDependingOn(target *imageImpl, context *opengl.
i.pixels.MakeStale()
return nil
}
if err := i.pixels.Reset(context); err != nil {
if err := i.pixels.ReadPixelsFromVRAM(context); err != nil {
return err
}
return nil
@ -259,7 +259,7 @@ func (i *imageImpl) restore(context *opengl.Context) error {
return nil
}
var err error
i.image, err = i.pixels.Restore(context, i.width, i.height, glFilter(i.filter))
i.image, err = i.pixels.CreateImage(context, i.width, i.height, glFilter(i.filter))
if err != nil {
return err
}

16
internal/pixels/pixels.go
View File

@ -96,10 +96,10 @@ func (p *Pixels) AppendDrawImageHistory(image *graphics.Image, vertices []int16,
// At returns a color value at idx.
//
// Note that this must not be called until context is available.
// This means Pixels members must match with acutal state in GPU.
// This means Pixels members must match with acutal state in VRAM.
func (p *Pixels) At(idx int, context *opengl.Context) (color.Color, error) {
if p.basePixels == nil || p.drawImageHistory != nil || p.stale {
if err := p.Reset(context); err != nil {
if err := p.ReadPixelsFromVRAM(context); err != nil {
return nil, err
}
}
@ -119,7 +119,7 @@ func (p *Pixels) DependsOn(target *graphics.Image) bool {
return false
}
func (p *Pixels) Reset(context *opengl.Context) error {
func (p *Pixels) ReadPixelsFromVRAM(context *opengl.Context) error {
var err error
p.basePixels, err = p.image.Pixels(context)
if err != nil {
@ -131,11 +131,11 @@ func (p *Pixels) Reset(context *opengl.Context) error {
return nil
}
func (p *Pixels) ResetIfStale(context *opengl.Context) error {
func (p *Pixels) ReadPixelsFromVRAMIfStale(context *opengl.Context) error {
if !p.stale {
return nil
}
return p.Reset(context)
return p.ReadPixelsFromVRAM(context)
}
func (p *Pixels) HasDependency() bool {
@ -145,10 +145,8 @@ func (p *Pixels) HasDependency() bool {
return p.drawImageHistory != nil
}
// Restore restores the pixels using its history.
//
// Restore is the only function that the pixel data is not present on GPU when this is called.
func (p *Pixels) Restore(context *opengl.Context, width, height int, filter opengl.Filter) (*graphics.Image, error) {
// CreateImage restores *graphics.Image from the pixels using its state.
func (p *Pixels) CreateImage(context *opengl.Context, width, height int, filter opengl.Filter) (*graphics.Image, error) {
if p.stale {
return nil, errors.New("pixels: pixels must not be stale when restoring")
}