_imImage.has_alpha

< Indicates that there is an extra channel with alpha. image:HasAlpha() -> has_alpha: boolean [in Lua 5]. \n It will not affect the secondary parameters, i.e. the number of planes will be in fact depth+1. \n It is always 0 unless imImageAddAlpha is called. Alpha is automatically added in image loading functions.

struct _imImage
int has_alpha;

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