[tools 2/3] winetest/build-patterns: Use the Luv colorspace for interpolating colors.

[Francois Gouget]

On Tue, 31 Aug 2021, Francois Gouget wrote:

> Interpolation works best in a colorspace where the distance between
> colors is representative of their perceptual difference. That's
> roughly the case in the Luv colorspace and much less so in the RGB
> one.
> 
> Signed-off-by: Francois Gouget <fgouget at codeweavers.com>
> ---
> This introduces a dependency on the Graphics::ColorObject perl module
> which is provided by the libgraphics-colorobject-perl Debian package.
> Note that on Debian 11 this package is missing a dependency on
> libgraphics-colornames-www-perl.

The patterns did not get updated today. I think that's because 
libgraphics-colorobject-perl is missing on winehq.org.

-- 
Francois Gouget <fgouget at codeweavers.com>