On Fri, Aug 10, 2018 at 06:50:31PM +0100, Alexandru Gheorghe wrote:
> DRM_MODE_REFLECT_X and DRM_MODE_REFLECT_Y meaning seems a bit unclear
> to me, so try to clarify that with a bit of ascii graphics.
>
> Signed-off-by: Alexandru Gheorghe <alexandru-cosmin.gheorghe@xxxxxxx>
Reviewed-by: Sean Paul <seanpaul@xxxxxxxxxxxx>
> ---
> include/uapi/drm/drm_mode.h | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
> index 8d67243952f4..ac5de85c93eb 100644
> --- a/include/uapi/drm/drm_mode.h
> +++ b/include/uapi/drm/drm_mode.h
> @@ -186,9 +186,18 @@ extern "C" {
> /*
> * DRM_MODE_REFLECT_<axis>
> *
> - * Signals that the contents of a drm plane is reflected in the <axis> axis,
> + * Signals that the contents of a drm plane is reflected along the <axis> axis,
> * in the same way as mirroring.
> *
> + * DRM_MODE_REFLECT_X
> + * |o | | o|
> + * | | -> | |
> + * | v| |v |
> + *
> + * DRM_MODE_REFLECT_Y
> + * |o | | ^|
> + * | | -> | |
> + * | v| |o |
> * This define is provided as a convenience, looking up the property id
> * using the name->prop id lookup is the preferred method.
> */
> --
> 2.18.0
>
--
Sean Paul, Software Engineer, Google / Chromium OS
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