** Also affects: mir (Ubuntu)
Importance: Undecided
Status: New
** Changed in: mir (Ubuntu)
Importance: Undecided => Medium
** Changed in: mir (Ubuntu)
Status: New => Triaged
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https://bugs.launchpad.net/bugs/1339471
Title:
[regression] mir_demo_client_multiwin is displayed with obviously
wrong colours
Status in Mir:
Fix Committed
Status in “mir” package in Ubuntu:
Triaged
Bug description:
I just noticed client-provided alpha is not being blended correctly
and mir_demo_client_multiwin looks significantly different now to how
it always did up to around June. The resulting colours are additive
(brighter) when clients with alpha overlap each other.
Test case: Run mir_demo_client_multiwin in mir_demo_server_shell
Expected: The pure red/green/blue regions should be darkened by their high
transparency and the grey background behind them.
Observed: The pure red/green/blue regions are full brightness, despite having
opacity of only 0x50 (0.31f) in front of a grey background.
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