Retain sharpness in scaled images

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HannesP
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Retain sharpness in scaled images

Post by HannesP »

Is it possible to retain the sharpness of images when drawing them with a scale factor? Mine become "fuzzy" in the edges when I do so, and when one pixel neighbours a pixel with 0 alpha, unwanted white "outlines" occur. I just want simple n^2 scaling where 1 pixel is drawn as 4 at 2x, 9 at 3x, 16 at 4x etc.
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rude
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Re: Retain sharpness in scaled images

Post by rude »

Ah, first time I've seen anyone (other than me) complain about those evil borders. It's related to the color of the transparent pixels, which apparently are white in your case. I made a function to alleviate that ages ago. Too bad it mysteriously stopped working. :rofl:

Sorry, there's no nearest neighbor filtering (yet).
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HannesP
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Re: Retain sharpness in scaled images

Post by HannesP »

Yay, at least it's a known issue :) how hard is this to implement in the backend? I know nothing about OpenGL programming, but my intuitive guess is that setting some kind of option in would be enough to make OpenGL render the images the way I want them. Am I completely wrong on this?
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rude
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Re: Retain sharpness in scaled images

Post by rude »

You're not wrong. You're spot on. It's not hard at all.
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S-Rave
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Re: Retain sharpness in scaled images

Post by S-Rave »

Will this be fixed in 0.6.0? :monocle:
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osgeld
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Re: Retain sharpness in scaled images

Post by osgeld »

I also would like to see this
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S-Rave
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Re: Retain sharpness in scaled images

Post by S-Rave »

There isn't an issue about this in the tracker. :o
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rude
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Re: Retain sharpness in scaled images

Post by rude »

S-Rave wrote:Will this be fixed in 0.6.0?
That was the plan.

There is an issue in the tracker, it just has a really bad name.
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