Compose Image with alpha

[Ithier]

Hi,

I have a 32 bits png image. When I load it and save it in PNG all is fine, the transparency is kept. When I load it and save it in JPEG, the image is mainly black (transparency become black).
When I load this PNG image in XNview it is also black except when I use the
"Compose Image with alpha" option in Options->Read-PNG, then the image is on a white background.

So my question is, what is this option and how can I do the same with the GFL SDK.

Thanks in advance.

[xnview]

Hi,

I have a 32 bits png image. When I load it and save it in PNG all is fine, the transparency is kept. When I load it and save it in JPEG, the image is mainly black (transparency become black).
When I load this PNG image in XNview it is also black except when I use the
"Compose Image with alpha" option in Options->Read-PNG, then the image is on a white background.

So my question is, what is this option and how can I do the same with the GFL SDK.

JPEG don't support 32bits, only 24bits. So i'll add an option like XnView...

[Ithier]

Hi Pierre,

Will you include this option in the next version of the SDK. It would be great.

Have a good week-end.

Ithier

[Ithier]

Hi Pierre,

This problem becomes rather annoying to me. When do you plan to release a new Gfl Sdk version and will it include this option: Compose with Alpha (as it exists in the Read/Png parameters of XnView).

Thanks in advance.

Ithier

[Ithier]

Sorry Pierre,

I didn't remember that you already implemented it. It works perfectly.
Thanks.

Ithier