Commit 78bcd2bec37187fd5d0e2ca69d1d583923e2f196
2018-10-16T15:05:20
Vulkan: Fix deleting in-use descriptor sets. Sequences of many frames with uniform updates could lead to a bug where we attempt to delete descriptor sets that are still in use. To trigger the bug we need to write enough uniform data to trigger a descriptor set to be freed. This would correctly trigger refresh sets in the Program. But if there was a second program idle in the background that also allocated descriptors from the old pool, the bug would manifest. Fix this by storing a shared handle to the descriptor pool in the Program. The dynamic descriptor pool won't recycle descriptor pools internally unless there are zero outstanding references to the pool. We could also improve this in a resource sharing situation by keeping a single shared dynamic descriptor pool per share group. Includes a contribution from tobine@google.com that adds a test to cover the bug. Bug: angleproject:2863 Change-Id: Id585b85f33f8cfa3772ceff3af512d1e4fb0b75a Reviewed-on: https://chromium-review.googlesource.com/c/1271919 Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org> Reviewed-by: Jamie Madill <jmadill@chromium.org> Commit-Queue: Jamie Madill <jmadill@chromium.org>