John Zulauf 459fa078e0 Add subpass sync support for layout transitions ...

Add additional source and dest mask bits for "from external" and "to
external" subpass dependencies (respectively) when intial and final
layouts cause implicit layout transitions.

This is a big hammer -- any transition in a given direction will create
a full barrier.  Attachment specific stage and access flags could be
used instead with additional logic to deduce the prior and intended
subsequent usages.

2020-10-16 19:17:07 -06:00

310 KiB

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