[PATCH 3/3] fbtest: add gradients pattern

[Sam Ravnborg]

Hi Nikita

Thanks for this, I have missed further fbtest options in the past.
Some nitpicks, that you may ignore.

	Sam

On Thu, Oct 12, 2017 at 08:52:28PM +0300, Nikita Yushchenko wrote:
> This pattern draws red, green, blue, and white color gradients, together with
> 3 anchor rectangles in corners.
> 
> To be used with automated screen testing via computer vision methods.
> 
> Suggested-by: Chris Healy <cphealy at gmail.com>
> Signed-off-by: Nikita Yushchenko <nikita.yoush at cogentembedded.com>
> ---
>  commands/fbtest.c | 110 +++++++++++++++++++++++++++++++++++++++++++++++++++++-
>  1 file changed, 108 insertions(+), 2 deletions(-)
> 
> diff --git a/commands/fbtest.c b/commands/fbtest.c
> index 9981c1319..8e6a5457f 100644
> --- a/commands/fbtest.c
> +++ b/commands/fbtest.c
> @@ -117,6 +117,111 @@ static void fbtest_pattern_geometry(struct screen *sc, u32 color)
>  	}
>  }
>  
> +static void draw_line_r(struct screen *sc, bool rotate_90_ccw,
> +		int x1, int y1, int x2, int y2,
> +		uint8_t r, uint8_t g, uint8_t b)
> +{
> +	if (rotate_90_ccw)
> +		gu_draw_line(sc,
> +			     y1, sc->info->yres - x1,
> +			     y2, sc->info->yres - x2,
> +			     r, g, b, 0xff, 0);
> +	else
> +		gu_draw_line(sc, x1, y1, x2, y2, r, g, b, 0xff, 0);
> +}
> +
> +static void solid_rect_r(struct screen *sc, bool rotate_90_ccw,
> +		int x1, int y1, int x2, int y2,
> +		uint8_t r, uint8_t g, uint8_t b)
> +{
> +	if (rotate_90_ccw)
> +		gu_fill_rectangle(sc,
> +				  y1, sc->info->yres - x1,
> +				  y2, sc->info->yres - x2,
> +				  r, g, b, 0xff);
> +	else
> +		gu_fill_rectangle(sc, x1, y1, x2, y2, r, g, b, 0xff);
> +}
> +
> +static void grad_rect_r(struct screen *sc, bool rotate_90_ccw,
> +		int x1, int y1, int x2, int y2,
> +		uint8_t r, uint8_t g, uint8_t b)
> +{
> +	int x;
> +
> +	for (x = x1; x <= x2; x++)
> +		draw_line_r(sc, rotate_90_ccw, x, y1, x, y2,
> +			    r * (x - x1 + 1) / (x2 - x1 + 1),
> +			    g * (x - x1 + 1) / (x2 - x1 + 1),
> +			    b * (x - x1 + 1) / (x2 - x1 + 1));
In the other xxx_xxx_sc(sc, ..) you have the following arguments on a new line.
But in this you have second argument on the same line.
It looks in-consistent.

Something like:
		draw_line_r(sc,
			    rotate_90_ccw, x, y1, x, y2,
			    r * (x - x1 + 1) / (x2 - x1 + 1),
			    ....

> +}
> +
> +static void anchor_rect_r(struct screen *sc, bool rotate_90_ccw,
> +		int x1, int y1, int x2, int y2)

Following arguments should be aligned after first "(" like this:
static void anchor_rect_r(struct screen *sc, bool rotate_90_ccw,
			  int x1, int y1, int x2, int y2)

At least this is how the kernel does things and I recall barebox is the same

	Sam