I recently re-installed Dragon Age: Inquisition to pick up where I left off. Problem is, I can't seem to enable Mantle any more. Previously (maybe 6 months ago) I was able to load DA:I with Mantle turned on, but the graphics menu in the game simply says that DirectX 11 is the only available API. Specs:
AMD FirePro M6100 (identified as Radeon HD 8950 in device manager)
Windows 8.1 Pro
Using drivers dated 5/15/15 from amd.com - the most recent available for the Dell Precision M6600/M6100 combo. The drivers on dell.com are ancient, and for Windows 8, not 8.1.
Yes, I know it's a workstation GPU, not a "gaming" GPU, but it ran Mantle fine 6 months ago. Is this because Mantle is on the scrap heap?