[cairo] RGB24 with transparant color?

[Jonathan Morton]

You should convert your image in software to RGBA format.

2009/11/3 M.C. Deurloo <m.c.deurloo at mail.com>

> Hi,
>
> I am porting an application from GD to Cairo. I am using the perl-binding
> for Cairo.
>
> For some special use-case of the application (PNG used in a PDF generator)
> I need PNG's with transparency in the PNG24-format (or PNG-8?), not in the
> RGBA format (no transparancy in the alpha channels, but a single transparent
> color). Can anyone point me in the right direction for solving this? My
> PNG24 surface ends up with an all black background instead of a transparent
> one.
>
> Thanks,
>
> Marijn
>
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