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graphics: isPowerOf2(0 or negative) should return false

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This commit is contained in:
Hajime Hoshi 2018-12-16 14:22:47 +09:00
parent 17b225083d
commit 5f8a0e34bb
1 changed files with 3 additions and 0 deletions
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3
internal/graphics/vertices.go
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@ -50,6 +50,9 @@ func (v *verticesBackend) slice(n int) []float32 {
}
func isPowerOf2(x int) bool {
if x <= 0 {
return false
}
return (x & (x - 1)) == 0
}