Re: [Gimp-developer] Is there any kind of documentation on the new layer blend modes?

Thanks for the thorough explanations... The "probabilistic" point of
view is interesting.

Your write-up makes a load of sense but some more time is required for
this to completely sink in:)


On 8/18/19 9:35 AM, Ell via gimp-developer-list wrote:

> There's indeed no organized documentation for all the new layer modes
> yet, unfortunately.
>
> For Pass Through mode, see:
>
>    https://docs.gimp.org/2.10/en/glossary.html#glossary-pass-through
>
> Merge and Split are complementary modes, as their names suggest.  They
> are similar to Normal and Erase modes, respectively, but they handle
> alpha values differently.  The short version is that (when using their
> default composite modes) Merge adds the alpha values of the input
> layers, while Split subtracts them.  In other words, if the alpha values
> of the bottom and top layers are A and B, respectively, the resulting
> alpha values for Merge and Split are `min (A + B, 100%)`
> and `max (A - B, 0%)`, respectively.
>
> --- Wall-of-text warning.  Skip to the end for practical examples. ---
>
> [.. snip ..]

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