Re: [PATCH v2 0/1] MR1552: winevulkan: Use direct calls for vkGetDescriptorEXT.

[Jacek Caban (＠jacek)]

> This should help a bit more, does it make a difference for you?

My previous test wasn't really good for measuring it.

I hacked a micro-benchmark, which confirms that the patch improves performance a lot. It was visible when doing "real" Vulkan vkGetPhysicalDeviceProperties calls in a loop, but even cleaner when I changed it further to make Unix side to be no-op. It closes most of the gap between direct call and __wine_unix_call_dispatcher. Times recorded for no-op calls:
- direct call: 5761
- unpatched Wine: 13933
- ret.diff: 6823 (55% time spent in __wine_unix_call_dispatcher, 29% in PE vkGetPhysicalDeviceProperties)

Looks impressive!