[Bug 105695] [PERF] Updating ubo offset via vkCmdBindDescriptorSets is causing flush that is taking 50% of rendering time

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Wed Mar 28 13:55:58 UTC 2018


https://bugs.freedesktop.org/show_bug.cgi?id=105695

--- Comment #2 from Vyacheslav <ytriffy at gmail.com> ---
You are right, I get better perf without asserts. It is still lagging behind
opengl. I also checked proprietary nvidia driver and I also get similar results
with vulkan slightly lagging behind. I think the issue can be closed but I'm
still left with impression that opengl drivers are better at handling memory
management in this case (passing 50000 matrices per frame via glUniformMatrix).
Probably because opengl drivers are more mature and better at tracking dirty
state.

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