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graphics: Forbid mipmap for a volatile image explicitly

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This commit is contained in:
Hajime Hoshi 2019-02-13 01:58:08 +09:00
parent 6930176fbb
commit 83da4ea112
1 changed files with 5 additions and 6 deletions
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11
image.go
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@ -61,17 +61,16 @@ func (m *mipmap) level(r image.Rectangle, level int) *shareable.Image {
}
for len(imgs) < idx+1 {
if m.orig.IsVolatile() {
panic("ebiten: mipmap images for a volatile image is not implemented yet")
}
w2 := w / 2
h2 := h / 2
if w2 == 0 || h2 == 0 {
return nil
}
s := shareable.NewImage(w2, h2)
if m.orig.IsVolatile() {
// TODO: As s is cleared every frame, is there any reason to keep it?
s.MakeVolatile()
}
var src *shareable.Image
var vs []float32
if l := len(imgs); l == 0 {
@ -315,7 +314,7 @@ func (i *Image) drawImage(img *Image, options *DrawImageOptions) {
a, b, c, d, tx, ty := geom.elements()
level := 0
if filter == graphics.FilterLinear {
if filter == graphics.FilterLinear && !img.mipmap.original().IsVolatile() {
det := geom.det()
if det == 0 {
return