. The Quantum Renderer Thread is a slave thread that performs rendering under direction of the FX Application Thread. Once all MT issues are resolved, they should be able to run in parallel as follows:

A. If the rendering takes less time than the SG update (which includes animation), the app thread will not need to wait:

---------------------------------------
FX App Thread       Prism Render Thread
=============       ===================
Update SG (1)       <idle>
...                 ...
Update SG (1)       ...
Pulse Listeners     <idle>
Queue RendJob (1)
Update SG (2)       Render (1)
...                 <idle>
Update SG (2)       <idle>
Pulse Listeners     <idle>
Queue RendJob (2)
Update SG (3)       Render (2)
...                 <idle>
Update SG (3)       <idle>
---------------------------------------


B. If the rendering takes more time than the SG update, the app thread will wait in the Pulse Listeners (which is where PG sync happens):

---------------------------------------
FX App Thread       Prism Render Thread
=============       ===================
Update SG (1)       <idle>
...                 ...
Update SG (1)       ...
Pulse Listeners     <idle>
Queue RendJob (1)
Update SG (2)       Render (1)
<WAIT>              ...
<WAIT>              ...
<WAIT>              Render (1)
Pulse Listeners     <idle>
Queue RendJob (2)
Update SG (3)       Render (2)
<WAIT>              ...
<WAIT>              ...
<WAIT>              Render (2)
Pulse Listeners     <idle>
Queue RendJob (3)