Re: save 32 bit float as exr file

[Piotr Stanczyk <piotr.stanczyk@xxxxxxxxx>]

Thanks for adding ...  Any thoughts on adding 16-bit floating point
support?  You could then consider using the RGBA interface ...



On Mon, Jul 18, 2011 at 10:13 AM, Rasmus Hahn <rassahah@xxxxxxxxxxxxxx> wrote:
> Hi,
>
> i have written an operation for gegl that writes OpenEXR float images, since
> i noticed there does not seem to be one already and i could use it. This
> version is quite usable within it's limitations. Limitations currently are:
>
>  - writes only 32 bit linear floating point images.
>  - only writes Y or RGB images with optional alpha.
>  - does not make use of OpenEXR specialties like layers, mipmaps
>    and multichannel.
>
> It does support the tiled format; for simplicity, however, tiles are always
> square.
>
> I would like to see it included in the distribution; for now i have attached
> a patch, which creates a new file gegl/operations/external/exr-save.cc and
> makes a modification to the Makefile.am to build it. The patch is against
> version gegl-0.1.6, but works with the git-version (as of 2011-07-13), too.
> Sorry, for not providing a URL, but i do not have one right now.
>
> The built operator is named 'gegl:exr-save' and has two properties:
>  path (string) - the filename to write to
>  tile (int) - the width of a tile (used for both x and y size);
>    the default is 0, which means a scanline file is written.
>
> Any comments or suggestions for this?
>
> Greetings - Rasmus
>
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