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vulkan: external sync for vk_sync_binary

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Venus uses vkImportSemaphoreFdKHR() with FD == -1 to signal a binary
semaphore and vkGetSemaphoreFdKHR() to wait on a binary semaphore.

Both KK and Dzn uses vk_sync_binary so supporting this special case for
import/export sync file will enable Venus host support.

Reviewed-by: Aitor Camacho <aitor@lunarg.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39067>
This commit is contained in:
osy 2025-12-22 10:25:12 -08:00 • committed by Marge Bot
parent 07260dc210
commit 5f8a9f0aeb
1 changed files with 26 additions and 1 deletions
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27
src/vulkan/runtime/vk_sync_binary.c
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@ -24,6 +24,7 @@
#include "vk_sync_binary.h"
#include "vk_util.h"
#include "util/os_time.h"
static struct vk_sync_binary *
to_vk_sync_binary(struct vk_sync *sync)
@ -44,7 +45,6 @@ vk_sync_binary_init(struct vk_device *device,
container_of(binary->sync.type, struct vk_sync_binary_type, sync);
assert(!(sync->flags & VK_SYNC_IS_TIMELINE));
assert(!(sync->flags & VK_SYNC_IS_SHAREABLE));
binary->next_point = (initial_value == 0);
@ -114,6 +114,29 @@ vk_sync_binary_wait_many(struct vk_device *device,
return result;
}
static VkResult
vk_sync_binary_import_sync_file(struct vk_device *device,
struct vk_sync *sync,
int fd)
{
/* FD == -1 case handled by vk_sync_import_sync_file() */
return VK_ERROR_INVALID_EXTERNAL_HANDLE;
}
static VkResult
vk_sync_binary_export_sync_file(struct vk_device *device,
struct vk_sync *sync,
int *pFd)
{
VkResult result;
struct vk_sync_binary *binary = to_vk_sync_binary(sync);
result = vk_sync_wait(device, &binary->timeline, binary->next_point, 0,
OS_TIMEOUT_INFINITE);
*pFd = -1;
return result;
}
struct vk_sync_binary_type
vk_sync_binary_get_type(const struct vk_sync_type *timeline_type)
{
@ -135,6 +158,8 @@ vk_sync_binary_get_type(const struct vk_sync_type *timeline_type)
.reset = vk_sync_binary_reset,
.signal = vk_sync_binary_signal,
.wait_many = vk_sync_binary_wait_many,
.import_sync_file = vk_sync_binary_import_sync_file,
.export_sync_file = vk_sync_binary_export_sync_file,
},
.timeline_type = timeline_type,
};