Commit 25e601978a252fdbf09c2a829f5b88b37d9f2b29
2023-03-31T14:17:26
Vulkan: Unify buffer alloc strategy for uploads and GPU copies With this change, glCopyBufferSubData uses the same buffer allocation strategy as glBufferSubData. Only exception is with buffer self-copies which never allocate a new buffer for simplicity. Additionally, this change allows glCopyBufferSubData to be done on the CPU if possible, i.e. if the source buffer is not being written to by the GPU and whenever the equivalent glBufferSubData would have used a CPU upload. Bug: b/276002151 Change-Id: Ice8df5891c5516b148245d5d6fa9b19b787df4ce Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4390023 Reviewed-by: Charlie Lao <cclao@google.com> Reviewed-by: Yuxin Hu <yuxinhu@google.com> Commit-Queue: Shahbaz Youssefi <syoussefi@chromium.org>