Asynchronous Spacewarp

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Asynchronous Spacewarp or ASW applies animation detection, camera translation, and head translation to previous frames in order to predict the next frame.

Requirements

ASW requires the following:

• Oculus Runtime 1.9 or later
• Windows 8 or later
• For Nvidia, driver 373.06 or later
• For AMD, driver 16.40.2311 or later

Until the minimum specification is released, we recommend the following GPUs for ASW testing:

Manufacturer	Series	Minimum RAM	Minimum Model
NVIDIA	Pascal	3GB	1060
	Maxwell	4GB	960
AMD	Polaris	4GB	470

Testing ASW

To enable ASW testing:

1. Open your registry editor.
2. Navigate to HKLM\Software\Oculus VR, LLC\LibOVR.
3. Create the DWORD AswEnabled key and set it to 1.

While testing your application with ASW, you can switch between rendering modes:

• Control-Numpad1: Disables ASW and returns to the standard rendering mode.
• Control-Numpad2: Forces apps to 45Hz with ASW disabled. Depending on the application, you are likely to experience judder.
• Control-Numpad3: Forces apps to 45Hz with ASW enabled. Enabling and disabling ASW will help you see the effects of ASW.
• Control-Numpad4: Enables ASW. ASW automatically turns on and off, depending on whether the app maintains a 90Hz frame rate. This is the default runtime rendering mode.