HUD elements can be enabled individually using a comma-separated
list. Supported options include:
- fps: Displays the framerate
- devinfo: Displays device info
Passing "1" has the same effect as "fps,devinfo".
Closer to the D3D11 API. We cannot use the normal clearColorImage and
clearDepthStencilImage methods in case the game uses a 2D array view
for a 3D image. Fixes some validation issues in Hellblade.