[mapserver-dev] [mapserver-users] RFC99: Remove GD support in 7.0

[thomas bonfort]

(posting back on list)

On 7 June 2013 21:24, Richard Greenwood <richard.greenwood at gmail.com> wrote:

> I have continued to use GIF rather than 8bit PNG because the GIF is
> smaller. Often by as much as 15%. Is that expected? Is there anyway to get
> PNG down to GIF size? I certainly understand the rationale for eliminating
> GD but I am discouraged by the prospect of larger image sizes.
>

I don't think that the gif vs. png format is relevant concerning file size
when encoding the same pixel data. However, the quantity of information to
encode in an antialiased image rendering is higher than in a non
antialiased one, thus the higher file size when using agg/png8 vs. gd/gif.
Even if we were to add a an agg/gif format, you would still be seeing this
size overhead.

To put this bluntly, if the 15% overhead is important for you, you would
have to stick with gd aliased rendering and the 6.4 release. I would also
like to put this in context: a 15% overhead compared to the 2001 (2005?)
outputs does not seem like a big deal given the evolution of available
bandwidth since that time.

We've been supporting this technologically obsolete rendering mode for many
years now, but imo it's time to move on.

regards,
thomas


> Rich
>
>
> On Fri, Jun 7, 2013 at 7:27 AM, thomas bonfort <thomas.bonfort at gmail.com>wrote:
>
>> Devs and Users,
>>
>> Please have a look at RFC99 (
>> http://mapserver.org/development/rfc/ms-rfc-99.html). I am particularly
>> interested in use-cases that would not be supported if GD were to be
>> removed.
>>
>> cheers,
>> Thomas
>>
>> _______________________________________________
>> mapserver-users mailing list
>> mapserver-users at lists.osgeo.org
>> http://lists.osgeo.org/mailman/listinfo/mapserver-users
>>
>>
>
>
> --
> Richard Greenwood
> richard.greenwood at gmail.com
> www.greenwoodmap.com
>
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