Setting DXGI Information in the Registry
DXGI and the reference rasterizer use the following registry keys:
Set to 1 to disable the watchdog thread.
Set to 1 to flush often.
Set to 1 to make each call to a DDI function fence with the GPU. Fencing with the GPU means to flush the command batch and block until the GPU is idle.
Set to 1 to:
Flush often and make each call to a DDI function fence with the GPU.
Run the reference rasterizer (RefRast) single threaded.
Each bit in the DWORD mask enables (if set to 1) or disables (if set to 0) the display monitor, which is controlled by the reference device.
Set to 1 to enable running RefRast single threaded.
Set to 1 to make the reference device create resources by using the regular process heap, versus other allocation mechanisms.
Set to 1 to allow the reference device's second thread to run asynchronously (that is, multiple command buffers are allowed to be outstanding).
The reference hardware typically runs in a second thread; however, this second thread completes all its work before the primary thread can continue.
Set to 1 to make the reference device's simulated hardware process only a few limited commands to give the appearance that the reference device is really fast (by essentially doing nothing).
The driver can use this key as a performance tool.