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From: Eli Zaretskii <eliz@gnu.org>
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Subject: Re: Testing native image scaling
Date: Thu, 28 Mar 2019 18:02:23 +0200
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To: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
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In-reply-to: <wl36n7raxl.wl-mituharu@math.s.chiba-u.ac.jp> (message from
	YAMAMOTO Mitsuharu on Thu, 28 Mar 2019 11:26:46 +0900)
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> Date: Thu, 28 Mar 2019 11:26:46 +0900
> From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
> 
> > > It seems to work, but maybe I don't know what and how to check.  Can
> > > you show what I should expect to see with and without the :scale
> > > attribute, in "emacs -Q"?
> > >
> > > Thanks.
> > 
> > I would expect a sliced image to be composed of a grid of tiled images
> > instead of a single image, but to have the same visual appearance as the
> > original image. The w32 code does not get this right.
> 
> Thanks for the screenshot.  That's what I suspected from the code in
> w32term.c and the documentation of StretchBlt.  Below is the
> screenshot on Xrender, and it should be the expected result.  The
> cursor is at the last row and the last column of the sliced image.

Thanks, I think I fixed this now.