This allows us to reset the CS chunk immediately while executing it,
which can reduce the overhead of the reset operation and may lead to
resources being released earlier.
Reduces the number of dynamic memory allocations for CS chunks by
recycling them once they are no longer needed. Also fixes a potential
issue with chunks that are dispatched multiple times.
Makes it easier to identify the command stream thread and the
queue processing thread easier when using a wine build that
supports SetThreadDescription.
Since we are synchronizing once per frame anyway, there is no need to
artificially limit the number of chunks in flight. Applications which
use deferred contexts and submit a large number of CS chunks through
command lists may benefit from this optimization.
Improves overall frame rate and latency in situations where the
application's render thread cannot keep up with the CS thread.
Considerable frametime improvements in NieR:Automata and
slightly higher frame rates in The Witcher 3.
While these are not being used as of yet, these classes can be
used to implement command stream multithreading in the future.
They are also useful to implement command lists for deferred
contexts, which are a core feature of D3D11.
