[mkgmap-dev] --route and --transparent

Thu Feb 15 13:01:14 GMT 2018

On 15/02/18 11:04, Gerd Petermann wrote:
> 1) it sets the flag in the TRE field at offset 0x3f
> 2) it disables the additional 0x4b background polygons
> 
> Maybe only the combination of both actions causes trouble in the PC programs?

cgpsmapper had the option to do 2) without doing 1) which it calls a 
semi-transparent map.

I tried un-setting the flag on a transparent map and routing started 
working again in mapsource. So it is just the flag that causes the
problem.  I don't know what the flag really does.

I also noted from the documentation that cgpsmapper seems to add 32 to
the draw priority of a transparent map, which is something that we do
not do.

Steve