Ichthyostega 75913725a8 BufferProvider: sharpen criterion for bool(BuffHandle) ...

doing so requires to trace a new call path from front to back,
into the `BufferMetadata` implementation: there is now an explicit check
that the buffer is in `LOCKED` state, but not yet `EMITTED` and als that
it was not yet `released()`

I think the additional effort is justified
 * in the regular / currently intended usage in the Render Engine,
   this predicate is not required, since compliance to the ''Buffer Provider Protocol''
   as such is sufficient to ensure that
 * but since all of this is getting more generic and polished now,
   I could imagine future usages beyond the current confines; and then,
   this semantics is what you'd expect from such a `bool()` check:
   »I am allowed to use it«

2026-02-16 01:44:38 +01:00

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