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restorable: Fix doc

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This commit is contained in:
Hajime Hoshi 2017-05-30 02:06:45 +09:00
parent 90ec2c79ce
commit d220e300ab
1 changed files with 4 additions and 2 deletions
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6
internal/restorable/image.go
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@ -45,8 +45,11 @@ type Image struct {
drawImageHistory []*drawImageHistoryItem drawImageHistory []*drawImageHistoryItem
stale bool stale bool
// volatile indicates whether the image is cleared at every frame.
volatile bool volatile bool
screen bool
// screen indicates whether the image is used as an actual screen.
screen bool
} }
func NewImage(width, height int, filter opengl.Filter, volatile bool) *Image { func NewImage(width, height int, filter opengl.Filter, volatile bool) *Image {
@ -162,7 +165,6 @@ func (p *Image) appendDrawImageHistory(image *Image, vertices []float32, colorm
// At returns a color value at (x, y). // At returns a color value at (x, y).
// //
// Note that this must not be called until context is available. // Note that this must not be called until context is available.
// This means Pixels members must match with acutal state in GPU.
func (p *Image) At(x, y int, context *opengl.Context) (color.RGBA, error) { func (p *Image) At(x, y int, context *opengl.Context) (color.RGBA, error) {
w, h := p.image.Size() w, h := p.image.Size()
w2, h2 := graphics.NextPowerOf2Int(w), graphics.NextPowerOf2Int(h) w2, h2 := graphics.NextPowerOf2Int(w), graphics.NextPowerOf2Int(h)