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How do I encode my ImageData 1-to-1, keeping #12345600 color (RGBA) as it is, not dropping to #00000000? #73

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kotoOo opened this issue Nov 13, 2021 · 1 comment
Open

How do I encode my ImageData 1-to-1, keeping #12345600 color (RGBA) as it is, not dropping to #00000000? #73

kotoOo opened this issue Nov 13, 2021 · 1 comment

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@kotoOo
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kotoOo commented Nov 13, 2021

The manual states that UPNG.encodeLL ain't running any optimizations, but looks like it still performs alpha premultification, doesn't it?
@photopea
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It is a bad practice to store useful RGB data into pixels, which have a transparency 0.

But UPNG.encodeLL() should keep the original data, without modifying pixels. Are you sure the bug is not in your code?

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@photopea @kotoOo