I saw in the release notes that Tonga support has been added, so I tried the latest version (0.5.2) with a Tonga card (r9 380 4GB) but get the following error on startup:
Failed to initialise device idx 3 (-13)
Is this card supported? Or is extra config required for Tonga?
08:00.0 VGA compatible controller: Advanced Micro Devices, Inc. [AMD/ATI] Tonga PRO [Radeon R9 285/380] (rev f1)