SteamVR BETA update for 4/14/16 (4/15/16 UTC)

Via the Steam Community:

General

• Fixed missing camera UI when camera fails to be detected due to USB issues.
• Fixed issue with Unicode characters in usernames and the SteamVR install path.
• Remove utah_plateau from included backgrounds. This is available separately now in the SteamVR Workshop with both ground detail and solid color.

Lighthouse

• Including vivelink 1.0.41 for improving Bluetooth communication

Room Setup

• Fixing a bug where the “Calibrate Floor” button would sometimes not appear.

Compositor:

• Switched from busy wait to sleep to reduce cpu overhead for synchronizing with vsync (running start).
• Disabled triggering reprojection due to cpu overhead. The current algorithm was too aggressive and more data needs to be collected across a wider range of applications and hardware combinations. Note: Poor cpu performance can still trigger reprojection due to causing gpu work to start later in the frame.

Frame Timing Graph:

• Added "unknown" gpu work to stacked graph. This represents bubbles of idle time due to the application poorly feeding the gpu, and/or any work from other applications that may have gotten scheduled before the current application's work is finished.
• Removed vsync lines on stacked cpu graph.
• Added red line to stacked cpu graph which mimics the gpu's threshold for kicking out of reprojection. These lines will show up on their respective graphs based on which (or both) are responsible for triggering reprojection.