Re: [Flightgear-devel] PNG compression causes black terrain in WS3.0

[James T. <ja...@fl...>]

> On 12 Jun 2023, at 22:02, Stuart Buchanan <stu...@gm...> wrote:
> 
> I had a check, and unfortunately we do currently use the alpha layer for 
> a number of things in the advanced terrain shaders, including as a mask for
>  autumnal coloring, and some aspects of the dot and grain textures.
> 
> So unfortunately I think we need to keep the alpha channels for any texture that
> might end up in the WS3.0 texture atlas.  That effectively means any texture referenced
> by materials.xml plus a couple of others that are hardcoded in some terrain effects.

Adding to this: it may not be related, but I’m see black shilouette trees on macOS, I wonder if the alpha channel got dropped from the vegetation textures accidentally?

Kind regards,
James