AMDGPU-PRO 17.20 Benchmarking vs. RadeonSI/RADV

Mad Max with OpenGL remains faster on RadeonSI over AMDGPU-PRO and the 17.20 release makes no headway in changing that.

But Mad Max with Vulkan currently sides with the AMDGPU-PRO Vulkan driver overall rather than the open-source RADV driver.

AMDGPU-PRO 17.20 isn't showing much in the way of performance changes over 17.10 on Polaris hardware, but great to see the continued leading RadeonSI OpenGL performance in a majority of the tests. The AMDGPU-PRO Vulkan driver largely remains faster than RADV, but as shown with this tests even the new Serious Sam 3: BFE on Vulkan manages to come out ahead on the open-source Vulkan code.