Commit 6fead3754375fb086cd7fa6ccef650d102dee06d
2020-03-21T14:06:19
Vulkan: No-op redundant FB state changes. This uses a trick by comparing the prior to the updated FB description to filter out rendundant changes. Will allow the front-end syncState to sometimes noisily report state changes when there aren't any in the back-end. Ideally we wouldn't generate any updates when there aren't real changes. However because Manhattan often transitons between a few zero states it gets a bit difficult to determine in the front-end. Also adds a no-op for redundant samples changes in the front-end. Fixes a regression in the number of RenderPasses in Manhattan from work to support rendering feedback loops. Bug: angleproject:4490 Change-Id: Ibf83d584107a4561da7ad47a2d3fb543e63e31f1 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2112935 Reviewed-by: Courtney Goeltzenleuchter <courtneygo@google.com> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>