Posted by Sven Gothel on
URL: https://forum.jogamp.org/Able-to-disable-JOGL-s-PNG-decoder-tp4027701p4027742.html

On 01/08/2013 03:50 PM, hernan [via jogamp] wrote:
>     Sven Gothel wrote
>     Yes, have to add code to 'explode' it to RGBA.
>
> In case this helps, the logic (included transparency handling, which might
> come in the TRNS chunk, outside the palette)  is implemented in
> ImageLineHelper.palette2rgb, see SampleConvPalToTrueColor
> <https://code.google.com/p/pngj/source/browse/pnjg/src/ar/com/hjg/pngj/test/SampleConvPalToTrueColor.java>.
> The method returns a RGB or RGBA depending on wheter transparency is present,

That information is very helpful, thank you very much Hernán!

> perhaps I should add a flag argument to force RGBA mode...

Not required by us, i.e. we serve it in either RGB or RGBA format
w/o modifications.

~Sven