headless: clear background to transparent, not white

The clear background is the most useful, and the old behaviour can
be achieved by filling the entire viewport with a white paint.ColorOp.

Signed-off-by: Elias Naur <mail@eliasnaur.com>
This commit is contained in:
Elias Naur
2021-05-03 10:15:19 +02:00
parent 23a839a29d
commit 2c07b2dc0e
52 changed files with 106 additions and 85 deletions
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