Re: [PULL 4/9] hw/display/artist: Avoid drawing line when nothing to display

[Sven Schnelle]

On Tue, Feb 18, 2020 at 11:39:24AM -0800, Richard Henderson wrote:
> From: Philippe Mathieu-Daudé <address@hidden>
> 
> Signed-off-by: Philippe Mathieu-Daudé <address@hidden>
> Message-Id: <address@hidden>
> Signed-off-by: Richard Henderson <address@hidden>
> ---
>  hw/display/artist.c | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/hw/display/artist.c b/hw/display/artist.c
> index 97c811b35e..5492079116 100644
> --- a/hw/display/artist.c
> +++ b/hw/display/artist.c
> @@ -579,6 +579,9 @@ static void draw_line(ARTISTState *s, int x1, int y1, int 
> x2, int y2,
>      } else {
>          dy = y1 - y2;
>      }
> +    if (!dx || !dy) {
> +        return;
> +    }
>  
>      c1 = false;
>      if (dy > dx) {
> -- 
> 2.20.1
> 
> 

I noticed that this change causes 1px wide lines to disappear. So i would 
propose
to revert that change.

Regards
Sven