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graphics: Document bug fix: DrawImage

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Hajime Hoshi 2017-02-27 23:53:21 +09:00
parent ae378dc7f5
commit 2b1dc69497
1 changed files with 3 additions and 1 deletions
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4
image.go
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@ -177,7 +177,9 @@ func (i *Image) Fill(clr color.Color) error {
// ColorM: Identity matrix (that changes no colors)
// CompositeMode: CompositeModeSourceOver (regular alpha blending)
//
// Note that this function returns immediately and actual drawing is done lazily.
// For drawing, the pixels of the argument image at the time of this call is adopted.
// Even if the argument image is mutated after this call,
// the drawing result is never affected.
//
// This function is concurrent-safe.
func (i *Image) DrawImage(image *Image, options *DrawImageOptions) error {