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restorable: Replace emptyImage with dummyImage

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This commit is contained in:
Hajime Hoshi 2018-04-06 03:08:52 +09:00
parent 70f16daafd
commit cc725b99af
1 changed files with 4 additions and 9 deletions
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13
internal/restorable/image.go
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@ -72,13 +72,7 @@ type Image struct {
screen bool
}
var emptyImage = newImageWithoutInit(16, 16, false)
func init() {
w, h := emptyImage.Size()
pix := make([]byte, 4*w*h)
emptyImage.ReplacePixels(pix, 0, 0, w, h)
}
var dummyImage = newImageWithoutInit(16, 16, false)
func newImageWithoutInit(width, height int, volatile bool) *Image {
i := &Image{
@ -100,10 +94,11 @@ func NewImage(width, height int, volatile bool) *Image {
}
func (i *Image) Clear(x, y, width, height int) {
w, h := emptyImage.Size()
w, h := dummyImage.Size()
geom := (*affine.GeoM)(nil).Scale(float64(width)/float64(w), float64(height)/float64(h))
geom = geom.Translate(float64(x), float64(y))
i.DrawImage(emptyImage, 0, 0, w, h, geom, nil, opengl.CompositeModeCopy, graphics.FilterNearest)
colorm := (*affine.ColorM)(nil).Scale(0, 0, 0, 0)
i.DrawImage(dummyImage, 0, 0, w, h, geom, colorm, opengl.CompositeModeCopy, graphics.FilterNearest)
}
// NewScreenFramebufferImage creates a special image that framebuffer is one for the screen.