Author :
Ryan C. Gordon
Date :
2020-07-17 11:16:35
Hash :b7a4fdd3 Message :metal: Make sure we have a command buffer available before trying to present.
This fixes a case where you render to the backbuffer, then render to a render
target, set the current target back to the backbuffer, and then present
without drawing anything else; in this circumstance, the Present command
would never happen.
Fixes Bugzilla #5011.