layers:Warn on cmd buffer invalidate

From Mikko Strandborg

When a resource gets deleted, any command buffer that references it
gets invalidated, and an error gets thrown whenever that command buffer
is submitted. However, for a developer, it's quite hard to deduce what
exactly caused that to happen. This patch emits a warning whenever a
command buffer that's in CB_RECORDING state (meaning that it has had
its vkBeginCommandBuffer called but not End). This way the developer
can set a breakpoint on that to see exactly what causes the buffer to
be invalidated.

Destroying a resource that's being used in an open command buffer is
almost certainly a bug, but there might still be cases where it might
be valid behavior (for example, when the application decides to abort
an operation), therefore it's not an error but a warning instead.

0 files changed, 0 insertions, 0 deletions