[PATCH v3 7/8] drm/sun4i: Add support for plane alpha

Maxime Ripard maxime.ripard at bootlin.com
Thu Feb 22 06:34:50 PST 2018

On Thu, Feb 22, 2018 at 10:17:38PM +0800, Chen-Yu Tsai wrote:
> On Sat, Feb 17, 2018 at 1:39 AM, Maxime Ripard
> <maxime.ripard at bootlin.com> wrote:
> > Our backend supports a per-plane alpha property. Support it through our new
> > helper.
> >
> > Signed-off-by: Maxime Ripard <maxime.ripard at bootlin.com>
> Reviewed-by: Chen-Yu Tsai <wens at csie.org>
> Though, not having a graphics background, does alpha = 255 mean fully
> transparent and thus can be skipped? Or no alpha at all?

It means that it's fully opaque, and therefore we are in the same
situation than if we had no alpha channel at all.


Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
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