[mapserver-dev] RFC 50: OpenGL Rendering Support

[Toby Rahilly]

Hi Steve,

Yes thats right, as the OpenGL renderer still uses the GD library for
output, we support the post-processing as AGG does.

OpenGL supports rendering to a user-defined pallete, so it could end
up being quite a bit faster as there would be no conversion necessary.
I would need to look into it though.

Cheers,
Toby

On Wed, Dec 24, 2008 at 4:43 PM, Stephen Woodbridge
<woodbri at swoodbridge.com> wrote:
> Steve Lime wrote:
>>
>> I added a formal version of RFC 50 to the new docs repository. It's
>> at:
>>
>> http://svn.osgeo.org/mapserver/trunk/docs/development/rfc/ms-rfc-50.txt
>>
>>
>> With general agreement on adding OpenGL rendering to MapServer we
>> should turn to the details of the RFC, and then formally vote on it.
>
> Well then, attending to details ... :)
>
> I think we should make sure that we support in the OUTPUTFORMAT like:
>
>  FORMATOPTION "QUANTIZE_FORCE=ON"
>  FORMATOPTION "QUANTIZE_DITHER=OFF"
>  FORMATOPTION "QUANTIZE_COLORS=256"
>
>  FORMATOPTION "PALETTE_FORCE=TRUE"
>  FORMATOPTION "PALETTE=/u/data/maps/palette-ayna-agg.txt"
>
> And the like for post processing the image, if this is possible. Sounds like
> it is as the image has to be sucked out of the graphics board into the GD
> buffer where it could be post processed before write the image.
>
> I wonder if there are options to the OpenGL driver to do the post processing
> of the image in the video driver?
>
> Best regards,
>  -Steve W
> _______________________________________________
> mapserver-dev mailing list
> mapserver-dev at lists.osgeo.org
> http://lists.osgeo.org/mailman/listinfo/mapserver-dev
>