Re: [Gpsbabel-misc] garmin_gpi bitmap=... - only 8bit per pixel icons work for Garmin nüvi 3790

[Robert L. <rob...@us...>]

Thanx.  I'll add this to the 1.4.3 doc on the next push.

<para>
  Not all devices can support all color depths.   GPSBabel (and its
  developers) have no way of knowing what is supported on any given model
  so some experimentation may be necessary on your part.   It was reported
  that a Nuvi 3790, for example, will read the POIs only if they use 8BPP.
</para>

On Fri, Dec 2, 2011 at 3:41 PM, Lutz Vieweg <lv...@5t...> wrote:

> Dear GPSBabel developers,
>
> while preparing some scripts/icons to create .gpi files for
> different amenity types from OpenStreetMap planet files I
> noticed that the "bitmap=..." option of the GPSBabel garmin_gpi
> output module is documented to work with either 8, 24 or 32bpp
> images.
>
> Maybe this works with some Garmin devices, but I found that
> a (relatively new) Garmin nüvi 3790 will display icons
> for the POIs on the map only if they were stored with 8 bits
> per pixel.
>
> So maybe it's a good idea to mention this in the docs - took
> me quite some time to figure out this incompatibility...
>
> Regards,
>
> Lutz Vieweg
>
>