Status of AGG support?

[Stephen Woodbridge]

Paul, Steve,

A few questions:

1) could one of you do a short post on what if anything needs to be done 
to use AGG other than install the libs and select some ./configure options.

2) Any sense on how this compares speed wise to the GD implementation.

3) is what is in the trunk all that 5.0 will see or is there some 
additional work that is planed to be implemented.

I would like to give it a try.

-Steve W

Paul Spencer wrote:
> The other thing that I am very keen to have is text rendered/placed 
> using AGG.  Not sure if it will be done for 5.0 though.
> 
> Cheers
> 
> Paul
> 
> On 3-Jul-07, at 1:25 PM, Steve Lime wrote:
> 
>> Hi Tom: AGG support is in the codebase for 5.0. I still owe an RFC to 
>> explain what was
>> done although the addition of AGG doesn't affect any other portions of 
>> MapServer. It's
>> a big user feature though. I recently got a big time sink off my plate 
>> and will work that up
>> ASAP.
>>
>> The support is relatively complete. The guys from DM Solutions can 
>> probably comment
>> further as they've been using it the most. The AGG vs. GD images DM 
>> has supplied are
>> very nice. The quality difference is noticeable with roads in particular.
>>
>> The only missing capability that I am aware of has to do with PIXMAP 
>> symbols that contain
>> an alpha channel. There is a fundamental difference in how AGG and GD 
>> handle alpha
>> blending (GD is flat out backwards).  We use GD to manage the pixel 
>> buffer that AGG is
>> rendering into so that becomes a problem. I'll go into options in the 
>> RFC.
>>
>> Anyway, other than that the support seems to be working nicely is 
>> worth trying.
>>
>> Steve
>>
>>>>> On 7/1/2007 at 10:08 PM, in message
>> <7b5b710d0707012008i59c41e8bq8e0ef4d8022f40f8 at mail.gmail.com>, Tom Beard
>> <tom at PROJECTX.CO.NZ> wrote:
>>> Hi there,
>>>
>>> This is my first time posting here, and I hope this is the right 
>>> forum to
>>> ask this question.
>>>
>>> I was wondering what the status of AGG support was for the 5.0 
>>> release. On
>>> searching the archives, the most recent reference I could find was the
>>> minutes from the May 22 IRC meeting that said that there would be an RFC
>>> freeze on June 15, and that an RFC for AGG was "forthcoming". Did AGG
>>> support make it into that freeze? Is it listed somewhere online?
>>>
>>> I'd also be interested to know if there is a version currently in 
>>> Subversion
>>> that includes AGG sub-pixel rendering and that works well enough to 
>>> have a
>>> go at compiling on Windows.
>>>
>>> Regards,
>>>             Tom Beard
> 
> +-----------------------------------------------------------------+
> |Paul Spencer                          pspencer at dmsolutions.ca    |
> +-----------------------------------------------------------------+
> |Chief Technology Officer                                         |
> |DM Solutions Group Inc                http://www.dmsolutions.ca/ |
> +-----------------------------------------------------------------+