On Saturday, February 5, 2022 at 8:35:00 AM UTC-5 [email protected] 
wrote:

> Could wxImage::GetSubImage and then scaling the resulting portion of the 
> original image in CpImgCtl::OnDraw do the trick?
>

Yes.  That does work.  I was intending to do something that works much 
better than that.  I wanted the feature committed before I start on the 
performance increase.

At 3 bytes per pixel, and applying to just two of the input images, not the 
whole panorama, I didn't think memory was the issue I should be worrying 
about.  But I was expecting to fix the memory issue anyway as a result of 
fixing the speed.

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