On 25/10/2018 23:23, Kenneth wrote:
> "Kenneth" <kdw### [at] gmailcom> wrote:
> 
>> 2) Try applying a JPEG image instead of a PNG (made in a graphics program with a
>> transparent mask in the outer area)...
> 
> Sorry, ignore that; I wasn't thinking. (A jpeg image can't have an alpha-channel
> mask, AFAIK.) Duh.
> 
> INSTEAD...
> Try applying a jpeg image to the glass with the 'once' keyword (instead of your
> png image), to see if there is any visual change in the transparent areas. I'm
> still thinking that the 'darkness' problem might be PNG/gamma related.
> 
> 

How right you were. I use Paint Shop Pro for image editing. Hidden away 
in File Format Preferences, is the setting: Load and save transparency 
to / from layer transparency OR Load and save transparency to / from 
alpha channel. It was set to layer transparency. Changing it to alpha 
solved the problem. I had to reinstall PSP a year or so ago and had 
forgotten those settings. So does that mean there is a problem when 
using the colour pallet for transparency?

Clipka was right about the reflection. My brain must have been addled 

forgotten setting.


-- 

Regards
     Stephen

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