Commit e689d3164f3457ee8dcceb0a129233638b16c32a
2020-08-14T22:51:03
Vulkan: Don't end RenderPass on DS feedback loops. Instead of always switching the Framebuffer to mask out depth/stencil loops we now switch the RenderPass to a "read-only" depth/stencil mode. Reduces the RenderPass count in Manhattan from 18->15. There are still a couple extra RenderPasses inserted that we can get rid. We can merge a few RenderPasses by retroactively changing a started RenderPass to "read-only" when there are no prior recorded depth writes or clears. Also adds a test to count the number of RenderPasses ANGLE generates in DS feedback loop situaions. Bug: angleproject:4959 Change-Id: I1855a45959655fc27ccd47a3469c1c672fc8fd9e Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2357973 Commit-Queue: Jamie Madill <jmadill@chromium.org> Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Tim Van Patten <timvp@google.com>