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restorable: Add assertions

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This commit is contained in:
Hajime Hoshi 2019-01-21 02:17:09 +09:00
parent e2cfb2da6f
commit ec08a75332
1 changed files with 8 additions and 0 deletions
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8
internal/restorable/image.go
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@ -101,6 +101,10 @@ func NewScreenFramebufferImage(width, height int) *Image {
}
func (i *Image) clear() {
if i.priority {
panic("not reached")
}
// There are not 'drawImageHistoryItem's for this image and dummyImage.
// As dummyImage is a priority image, this is restored before other regular images are restored.
w, h := i.Size()
@ -229,6 +233,9 @@ func (i *Image) ReplacePixels(pixels []byte, x, y, width, height int) {
// DrawImage draws a given image img to the image.
func (i *Image) DrawImage(img *Image, vertices []float32, indices []uint16, colorm *affine.ColorM, mode graphics.CompositeMode, filter graphics.Filter, address graphics.Address) {
if i.priority {
panic("not reached")
}
if len(vertices) == 0 {
return
}
@ -384,6 +391,7 @@ func (i *Image) restore() error {
gimg.ReplacePixels(i.basePixels, 0, 0, w, h)
} else {
// Clear the image explicitly.
// TODO: Is dummyImage available for clearing?
pix := make([]uint8, w*h*4)
gimg.ReplacePixels(pix, 0, 0, w, h)
}