Re: Testing native image scaling

[Andy Moreton]

On Wed 27 Mar 2019, Andy Moreton wrote:

> On Wed 27 Mar 2019, Eli Zaretskii wrote:
>
>>> From: Andy Moreton <address@hidden>
>>> Date: Wed, 27 Mar 2019 18:35:09 +0000
>>> 
>>> > 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"?
>>>
>>> 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.
>>
>> Did insert-sliced-image ever work on Windows, even before scaling was
>> added?

This works correctly (without native scaling) on the emacs-26 branch.
The following forms result in the same visual appearance in the buffer.

(insert-image (create-image "splash.png" nil nil))
(insert-sliced-image (create-image "splash.png" nil nil) nil nil 1 1)
(insert-sliced-image (create-image "splash.png" nil nil) nil nil 3 5)

    AndyM