Re: [Gimp-developer] GIMP 2.10 Unable to read tile data from swap

On Wed, 2 May 2018 16:08:31 -0400
Partha Bagchi <partha1b gmail com> wrote:

On Wed, May 2, 2018 at 3:58 PM, Ell <ell_se yahoo com> wrote:

On Wed, 2 May 2018 15:56:12 -0400
Partha Bagchi <partha1b gmail com> wrote:
On Wed, May 2, 2018 at 3:49 PM, Ell <ell_se yahoo com> wrote:  
Note that the actual bug was the swap being used in the first
place. I'm still not sure why you're getting read errors,
though.  Since the swap shouldn't be used anymore (in this
particular case) after the above commit, the errors will
probably go away, but the issue causing them might still be
there.  I'd try to set a very low cache size, in order to force
the swap to become very active, and see if you're getting any
more errors. 
I should do this after update gegl and gimp, correct?  


Sounds good.

I think your hypothesis that it's related to the zoom level may be
correct. I restarted GIMP with no GEGL environment variables. I
opened image > duplicated layer. I set the zoom level to 50.1% and I
saw the same artifacts. Then I increased the zoom to 50.5% and it
went away.

You realize that for large images, it would be unwieldy to be
painting at that zoom level?

Thanks again to you and pippin for resolving this.


PS: Did you see the screenshots I posted?

I have now.  The artifacts are only present in the flat, downscaled
version of the image, and not in the layers themselves, so changing a
layer's mode, or doing anything else that would cause the entire image
to get re-rendered, would make them go away.


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