Commit ba81145fb613f0e102fa23e473b5418881f9fb1e
2024-11-08T15:45:44
Vulkan: Emulate coherent framebuffer fetch everywhere Many apps expect coherent framebuffer fetch to be available, and multiple downstream emulators end up forcing coherent framebuffer fetch enabled despite the hardware not being coherent. This change attempts to do a best-effort emulation of coherent framebuffer fetch by automatically inserting barriers before framebuffer fetch draws. While this doesn't correctly handle self-overlapping geometry, it works well enough in practice for the applications. As a result, framebuffer fetch is practically enabled everywhere after this change. Bug: angleproject:377923479 Change-Id: I3900a1de0f4db755b7e70871f57df3ea112073f9 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6004336 Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>