[Dvipng] Re: dvipng transparency and eps

[Jan-Åke Larsson]

Kasper Peeters wrote:
> When using the "-bg Transparent" option to dvipng, any EPS figures
> which are included using \includegraphics still keep their
> nontransparent background.

Try the latest CVS. It contains a few improvements:

a) By using the pngalpha gs device it will no longer overwrite things 
already typeset "under" the included EPS image. Unless the EPS 
explicitly paints the background of course (Yikes!)
b) It will no longer automatically crop an EPS image to the boundingbox, 
but render all that fits on the present page. The boundingbox will be 
used for size estimates if -Ttight is used.
c) Images included onto a transparent background will have...a 
transparent background(!).
d) If the pngalpha device is not present in your gs, it will revert to 
the old behaviour (with a warning).
e) An included image will automatically make the page be output in 
truecolor mode. Use --palette to enforce the old behaviour. I will think 
some more before releasing this, perhaps people _want_ palette images. 
But dvipng has always opted for speed, and this is really the speediest 
solution, palettizing an included image is quite time consuming. The 
png256 gs device uses a fixed palette so the output is really inferior.

/JÅ