GMIC in Krita

[Lukast dev]

> Ah! Now I get you. But that is already provided for, too, by:
>
>     /**
>      * Copy the bytes in the paint device into a vector of arrays of bytes,
>      * where the number of arrays is the number of channels in the
>      * paint device. If the specified area is larger than the paint
>      * device's extent, the default pixel will be read.
>      */
>     QVector<quint8*> readPlanarBytes(qint32 x, qint32 y, qint32 w, qint32
> h);
>
>     /**
>      * Write the data in the separate arrays to the channes. If there
>      * are less vectors than channels, the remaining channels will not
>      * be copied. If any of the arrays points to 0, the channel in
>      * that location will not be touched. If the specified area is
>      * larger than the paint device, the paint device will be
>      * extended. There are no guards: if the area covers more pixels
>      * than there are bytes in the arrays, krita will happily fill
>      * your paint device with areas of memory you never wanted to be
>      * read. Krita may also crash.
>      *
>      * XXX: what about undo?
>      */
>     void writePlanarBytes(QVector<quint8*> planes, qint32 x, qint32 y,
> qint32 w, qint32 h);
>
>
> Not absolutely completely efficient, of course, but this is the right thing
> to do.

Cool, something like this could work. I would test it immediatelly but I
got crash when I was converting RGB8 to RGBA Float32 colorspace, so I
need to investigate
that problem first.