[PATCH 1/3] 2d-primitives: fix missing pixel in gu_draw_line()

[Chris Healy]

Full series is:

Tested-by: Chris Healy <cphealy at gmail.com>

Was tested on sandbox with various resolutions between 320x200 up to 1280x768.

On Thu, Oct 12, 2017 at 10:52 AM, Nikita Yushchenko
<nikita.yoush at cogentembedded.com> wrote:
> When drawing line from (x1, y1) to (x2, y2), pixel at (x2, y2) should
> be included.
>
> Signed-off-by: Nikita Yushchenko <nikita.yoush at cogentembedded.com>
> ---
>  lib/gui/2d-primitives.c | 4 ++--
>  1 file changed, 2 insertions(+), 2 deletions(-)
>
> diff --git a/lib/gui/2d-primitives.c b/lib/gui/2d-primitives.c
> index 0f29b32ba..89acc092d 100644
> --- a/lib/gui/2d-primitives.c
> +++ b/lib/gui/2d-primitives.c
> @@ -61,7 +61,7 @@ static void draw_simple_line(struct screen *sc,
>                 swap(y1, y2);
>         }
>
> -       for (x = x1; x < x2 - 1; x++) {
> +       for (x = x1; x <= x2; x++) {
>                 if (!dash ||
>                     (++pixel % (2 * dash)) < dash)
>                         illuminate(sc->info,
> @@ -137,7 +137,7 @@ void gu_draw_line(struct screen *sc,
>         j   = y1;
>         eps = dy - dx;
>
> -       for (i = x1; i <= x2 - 1; i++) {
> +       for (i = x1; i <= x2; i++) {
>                 if (!dash ||
>                     (++pixel % (2 * dash)) > dash) {
>                         illuminate(sc->info,
> --
> 2.11.0
>