tree 8ee2c72df952ac50129325c1abddf7cdbdc5cfb7
parent 8da0f82baf359e2b91464f111306a094f86fe71b
author David 'Digit' Turner <digit@google.com> 1582200728 +0100
committer swiftshader-scoped@luci-project-accounts.iam.gserviceaccount.com <swiftshader-scoped@luci-project-accounts.iam.gserviceaccount.com> 1611086513 +0000

vulkan: Support VK_KHR_external_memory_fd on OS X.

This CL adds a Posix-based implementation for the
VK_KHR_external_memory_fd Vulkan extension, using the SysV
shm_open() / shm_unlink() API to create the shared
memory region.

The Linux backend still uses memfd-based regions which
are easier to create, and because Android does not provide
shm_open() intentionally [1].

[1] https://android.googlesource.com/platform/ndk/+/4e159d95ebf23b5f72bb707b0cb1518ef96b3d03/docs/system/libc/SYSV-IPC.TXT

Bug: b/140419396
Tests: dEQP-VK.*
Change-Id: Ibbb23c3af59e81f76e41a0e71281f6d1a8b07c01
Reviewed-on: https://swiftshader-review.googlesource.com/c/SwiftShader/+/41408
Reviewed-by: Nicolas Capens <nicolascapens@google.com>
Tested-by: Yilong Li <liyl@google.com>
Commit-Queue: Nicolas Capens <nicolascapens@google.com>
Kokoro-Result: kokoro <noreply+kokoro@google.com>