[PATCH 0/4] wined3d: Rework resource fencing
Stefan Dösinger
stefan at codeweavers.com
Wed Feb 23 10:01:40 CST 2022
This is the patchset described in https://www.winehq.org/pipermail/wine-devel/2022-January/204020.html .
It simplifies and speeds up d3d resource tracking in a few ways:
*) Completely remove any burden on the CS thread.
*) Replace interlocked ops on the client thread with a plain assignment.
*) Piggy-pack onto the queue's head and tail counters, which we already
increment with interlocked ops.
I tested the impact with a microbenchmark:
https://github.com/stefand/perftest/blob/main/resource_tracking_d3d11/resource_tracking_d3d11.cpp
Depending on the CPU it doubles or tripples draw speed in that microbenchmark. In real games the
effect is much less pronounced, but I do see about a 2% gain in World of Tanks. I also see a gain
in Rocket League, but only if I hack away other known issues with Rocket League (UpdateSubResource
in particular).
I have further improvements to resource tracking in my mind that can be done on top of these patches:
*) Separate read and write access times.
*) Remove draw and compute tracking for d3d10+ clients and only track staging resources.
Matteo had some ideas to make the queue multi-writer thread safe to further reduce the use of
wined3d_cs. This patchset makes this a bit more complicated because the head value cannot be infered
from the return value of require_space() and thus needs to be passed around separately to submit().
This can be done either with thread local storage or via a separate parameter to require_space() and
submit().
Stefan Dösinger (4):
wined3d: Use extra bits in the queue head and tail counters.
wined3d: Use the default queue index for resource fencing.
wined3d: Remove the no-op wined3d_resource_release.
wined3d: Move resource->type away from the access time field.
dlls/wined3d/cs.c | 170 ++++-----------------------------
dlls/wined3d/resource.c | 1 -
dlls/wined3d/wined3d_private.h | 97 +++++++++++++++----
3 files changed, 100 insertions(+), 168 deletions(-)
--
2.34.1
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