Re: [Gimp-developer] Huge performance improvement idea

["Joao S. O. Bueno" <gwidion gmail com>]

On 20 March 2015 at 13:43, Chandana Bandara <cbsoftware gmail com> wrote:
> Greetings from Chandana,

Hi Chandana -
welcome to this group.

Thank you for your suggestions.
In fact the workflow you suggest could be made explicitly possible in
the future as we move GIMP to
a non-destructive editing paradgim using GEGL

That will take a lot of time, however - as there is a huge lot of work
for such fundamental changes.

However, the good news is that the underlying image processing in GIMP
- GEGL - was conceived
to allow preview renderings - that would behave just like you suggest
(working on the
zoomed out part of an image as if it were a smaller image, for
example) - and just this week
Pippin sent an e-mail detailing how the final pieces are being put in
place so that this starts working.

So - it is not so simple, or explicit for the final users as you have
it in your e-mail, but it is basically the same idea -
just search the list developer list archives for a message from Øyvind
Kolås on March the 18th to see the details.

  js
 -><-


> I have an idea that can make a huge impact on performance increase on GIMP
> image manipulations. This idea occurred to me when I was working on a large
> banner which I had to do some experiments (Colour changes, layer movements,
> Font changes, etc...)
>
> The problem was, it took so long time to do even a small change in the
> image. I do not have huge memory. What I thought was, what if I can
> 1. Get a copy of the current image (with all layer details)
> 2. Resize it to a smaller version
> 3. Do all the modifications I do in the small version
> 4. Apply all changes I did in the smaller version to the larger version
>
> This way, computer resources required are much less than what needed in the
> original image. We need to implement a way so that GIMP will remember all
> the modifications we do in the small image and from a single click GIMP
> should be able to do it to the larger image. Another good version of this
> idea would be to
>
> 1. Create a small image
> 2. Do whatever we want in to the small image
> 3. From a single click, GIMP create scaled up image and apply all the
> things we did to the small image to the large image
>
> Please take this idea into consideration.
>
> Thank you,
> Chandana Bandara
> Coolbit Software Solutions (Pvt) Ltd
> www.coolbitsoftware.com
>
> Web applications | Web designing | Web hosting | Product/Commercial
> photography
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