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pixels: Refactoring

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This commit is contained in:
Hajime Hoshi 2016-07-27 01:54:23 +09:00
parent 5c56058d6e
commit c18756352d
1 changed files with 2 additions and 6 deletions
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8
internal/pixels/pixels.go
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@ -84,13 +84,9 @@ func (p *Pixels) AppendDrawImageHistory(image *graphics.Image, vertices []int16,
// This means Pixels members must match with acutal state in GPU.
func (p *Pixels) At(idx int, context *opengl.Context) (color.Color, error) {
if p.basePixels == nil || p.drawImageHistory != nil {
var err error
p.basePixels, err = p.image.Pixels(context)
if err != nil {
if err := p.Reset(context); err != nil {
return nil, err
}
p.baseColor = nil
p.drawImageHistory = nil
}
r, g, b, a := p.basePixels[idx], p.basePixels[idx+1], p.basePixels[idx+2], p.basePixels[idx+3]
return color.RGBA{r, g, b, a}, nil
@ -122,7 +118,7 @@ func (p *Pixels) HasDependency() bool {
// 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.
// 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) {
img := image.NewRGBA(image.Rect(0, 0, width, height))
if p.basePixels != nil {