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restorable: Add assertion at fillImage

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This commit is contained in:
Hajime Hoshi 2019-07-16 02:16:00 +09:00
parent 2b632d0707
commit 6d20e3f951
1 changed files with 7 additions and 0 deletions
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7
internal/restorable/image.go
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@ -120,6 +120,9 @@ func init() {
for i := range pix {
pix[i] = 0xff
}
// As emptyImage is the source at fillImage, initialize this with ReplacePixels, not fillImage.
// This operation is also important when restoring emptyImage.
emptyImage.ReplacePixels(pix, 0, 0, w, h)
theImages.add(emptyImage)
}
@ -189,6 +192,10 @@ func (i *Image) clearForInitialization() {
// fillImage fills a graphicscommand.Image with the specified color.
// This does nothing to do with a restorable.Image's rendering state.
func fillImage(img *graphicscommand.Image, r, g, b, a byte) {
if img == emptyImage.image {
panic("restorable: fillImage cannot be called on emptyImage")
}
rf := float32(0)
gf := float32(0)
bf := float32(0)