func gdCreate(sx, sy int) *gdImage {
img := img(C.gdImageCreateTrueColor(C.int(sx), C.int(sy)))
if img == nil {
return nil
}
C.gdImageAlphaBlending(img.img, C.int(cbool(false)))
C.gdImageSaveAlpha(img.img, C.int(cbool(true)))
return img
}
func (p *Image) SaveAlpha(saveflag bool) {
C.gdImageSaveAlpha(p.img, map[bool]C.int{true: 1, false: 0}[saveflag])
}
func (p *gdImage) gdSaveAlpha(b bool) {
C.gdImageSaveAlpha(p.img, C.int(cbool(b)))
}