simple-egl: Don't set-up alpha for opaque/fullscreen
When setting the window as opaque or fullscreen (which creates an opaque region) make it so we don't have any alpha pixels set. This was mistakenly dropped from a previous patch series update to simple-egl.
See also !730 (merged)
Signed-off-by: Marius Vlad marius.vlad@collabora.com
Edited by Marius Vlad