Commit 3cc3327c52dc140376573ef7a8ea2ee6319768de
2023-07-07T10:29:45
Vulkan: limit preferCPUForBufferSubData flag to mali job manager This feature flag was introduced with testing on pixel 6 pro with aliexpress trace. The GPU has a job manager does the scheduling and transfer workload was put in the same job queue as geometry work which causing unnecessary bubble in the pipeline. This problem does not exist on newer GPU architecture where it has a command stream front end that transfer has its own dedicated queue. As test result on pixel 7 devices indicates, this feature flag shows no difference on pixel 7with aliexpress trace, and has negative perf impact with gangstar_vegas trace. This CL limits the feature flag to ARM's job manager based GPU. This improves gangstar_vegas frame time from 8.4576ms to 4.6370ms on pixel 7 pro. Bug: b/289436017 Change-Id: I604fb1e26d0a99bcf8f4c2574ced360c31ac712d Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4671326 Commit-Queue: Charlie Lao <cclao@google.com> Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>