Compose two images that have an alpha channel using the OVER operator. \n
* Can be done in-place, images must match. \n
* Maximum alpha values are baed in \ref imColorMax. Minimum is always 0.
* \verbatim im.ProcessCompose(src_image1: imImage, src_image2: imImage, dst_image: imImage) [in Lua 5] \endverbatim
* \verbatim im.ProcessComposeNew(image1: imImage, image2: imImage) -> new_image: imImage [in Lua 5] \endverbatim
* \ingroup arithm
Compose two images that have an alpha channel using the OVER operator. \n * Can be done in-place, images must match. \n * Maximum alpha values are baed in \ref imColorMax. Minimum is always 0. * \verbatim im.ProcessCompose(src_image1: imImage, src_image2: imImage, dst_image: imImage) [in Lua 5] \endverbatim * \verbatim im.ProcessComposeNew(image1: imImage, image2: imImage) -> new_image: imImage [in Lua 5] \endverbatim * \ingroup arithm