Commit 69da0b925d2357a7f3201f36fddc873cf497e134
2020-09-13T20:00:19
Metal: Use shared memory for small dynamic buffers. - If BufferMtl is static or large size, don't use shadow copy. Use one MTLBuffer and map directly on it. - If BufferMtl is dynamic and small size, use shadow copy and buffer pool of 10 MTLBuffer (s). The MTLBuffer is allocated in shared memory in this case (PCI-E memory for example). MTLBuffer in shared memory region doesn't need to sync content between CPU and GPU. - When copyBuffer, if BufferMtl is being used by GPU use blit command to do the copy on GPU side. - Also implemented GL_MAP_UNSYNCHRONIZED_BIT. Bug: angleproject:2634 Change-Id: I7a5aab309d24c76106a7087358ee5883ee05d250 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2408592 Commit-Queue: Le Hoang Quyen <le.hoang.q@gmail.com> Reviewed-by: Jonah Ryan-Davis <jonahr@google.com> Reviewed-by: Jamie Madill <jmadill@chromium.org>