Hi
Am 28.10.22 um 12:04 schrieb Ville Syrjälä:
On Thu, Oct 27, 2022 at 01:08:24PM +0200, Thomas Zimmermann wrote:
I trust you when you say that <native>->XRGB8888 is not enough. But although I've read your replies, I still don't understand why this switch is necessary.
Why don't we call drm_fb_build_fourcc_list() with the native format/formats and let it append a number of formats, such as adding XRGB888, adding ARGB8888 if necessary, adding ARGB2101010 if necessary. Each with a elaborate comment why and which userspace needs the format. (?)
Are you saying there is some real userspace that breaks without the alpha formats? That would already be broken on many devices.
We should scrap them all IMHO, unless the hardware really supports them. See the other discussion on this patch's v2 as well.
Best regards Thomas