thanks moritz.

and btw i was really very happy to hear about openexr being ported to c :)

i share the maintainability concerns, so at some point i took some time for
an experiment and rewrote parts of dt in vulkan/glsl (
https://github.com/hanatos/vkdt). sorry but if anything it's even more c
than the original. but yes, fresh rewrites are always easy to make very
clean.. but all the ifdefs for architectures etc will come back in a mature
product, don't worry. at least i tried to remove all unnecessary
dependencies (glib, gtk, ..) and processing language layers (i386, sse/avx,
openmp, opencl).

cheers,
 jo


On Sun, Jun 6, 2021 at 7:10 PM Moritz Moeller <virtualr...@gmail.com> wrote:

> Hello Paul.
>
> You raise some good points imho.
>
> However, what I am replying to here is solely the suggestion of using C++.
>
> You may of course choose to ignore my reply as I'm not a DT developer.
> I do have 25+ years of professional experience writing software for
> image processing/generation though. Most of it in C++. So maybe I'm
> worth listening to.
>
> Before I start: I think the choice of C was excellent one of Johannes –
> at the time.
>
> Today I would probably choose Rust for any sort of
> refactoring/architecture/API improvements of any C code base I can think
> of. Including that of DT.
>
> C++ – I do not even know where to start how bad an idea I'd consider that.
>
> But to add some context: There is an ongoing effort from people in the
> Academy of Motion Pictures Software Association (ASWF) to expose all
> functionality as C APIs.
> One reason is that all the libs ASWF hosts will be wrapped in safe Rust
> APIs.
> What's more: core OpenEXR, just for example, is just being refactored in
> C (current codebase is C++).
>
> These are people relying on such software like OIIO, OCIO, OSL, etc. to
> generate millions of images for motion pictures and series. They are
> turning their backs on C++. It's early days but ... go figure.
>
> My suggestion would be: make a nice, safe RUst API to allow people
> writing modules in that language.
>
> Then, if people really feel the need, refactor DT, bit by bit, into Rust.
> Starting with the most hard to read parts of the codebase that someone
> new may want to contribute to.
>
>
> Just my two c.
>
> Beers,
>
> .mm
>
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