Re: [PATCH v3 7/8] drm/sun4i: Add support for plane alpha
On Thu, Feb 22, 2018 at 10:34 PM, Maxime Ripard wrote: > 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 >> wrote: >> > Our backend supports a per-plane alpha property. Support it through our new >> > helper. >> > >> > Signed-off-by: Maxime Ripard >> >> Reviewed-by: Chen-Yu Tsai >> >> 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. Right. Then the code makes sense. Thanks for the explanation. ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [PATCH v3 7/8] drm/sun4i: Add support for plane alpha
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 > wrote: > > Our backend supports a per-plane alpha property. Support it through our new > > helper. > > > > Signed-off-by: Maxime Ripard > > Reviewed-by: Chen-Yu Tsai > > 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 -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com signature.asc Description: PGP signature ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
Re: [PATCH v3 7/8] drm/sun4i: Add support for plane alpha
On Sat, Feb 17, 2018 at 1:39 AM, Maxime Ripard wrote: > Our backend supports a per-plane alpha property. Support it through our new > helper. > > Signed-off-by: Maxime Ripard Reviewed-by: Chen-Yu Tsai Though, not having a graphics background, does alpha = 255 mean fully transparent and thus can be skipped? Or no alpha at all? Thanks ___ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel
