looks like on my Radeon HD 7850:
- OpenGL is faster on Linux than on Windows
- DirectX is faster on Win8.1 than on Win10
- Vulkan is 2x slower than OpenGL
at least according to the few benchmarks that I've ran so far
@benis but I've heard AMD GPUs like multiple queues and you need Vulkan or DX12 (or presumably Mantle) to utilize mutliple queues...
Though maybe Basebench and Portal 2 don't try to use multiple queues anyway...
Either way, with Vulkan on GCN1 being an afterthought, I'm not that surprised.
@wolf480pl The one that amused me was when OpenGL was faster than DirectX on Windows, sadly didn't document it
@wolf480pl From my reading of Mesa3D (our centralized OpenGL/Vulkan implementation) & what I heard from Alyssa Rosenzweig I'm not surprised.
Don't know about DirectX though.
We (presumably) put a lot more work into software optimization of these drivers, and haven't put much work into Vulkan yet. Not a priority.
The social network of the future: No ads, no corporate surveillance, ethical design, and decentralization! Own your data with Mastodon!