Commit Graph

1 Commits

Author SHA1 Message Date
Ell
5effdd03b4 app: add dedicated op for pass through mode, with shortcuts
Pass through mode uses the same compositing logic as REPLACE mode,
however, it's a special case of REPLACE, where the layer is already
composited against the backdrop.  This allows us to take a few
shortcuts that aren't generally applicable to REPLACE mode.

Add a dedicated op class for pass through mode, derived from the
REPLACE mode op, implementing these shortcuts.
2017-08-31 11:39:38 -04:00