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// Copyright 2019 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "gpu/vulkan/vulkan_util.h"
#include "base/logging.h"
#include "gpu/vulkan/vulkan_function_pointers.h"
namespace gpu {
VkSemaphore ImportVkSemaphoreHandle(VkDevice vk_device,
SemaphoreHandle handle) {
auto handle_type = handle.vk_handle_type();
if (!handle.is_valid() ||
(handle_type != VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT &&
handle_type != VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT)) {
return VK_NULL_HANDLE;
}
VkSemaphore semaphore = VK_NULL_HANDLE;
VkSemaphoreCreateInfo info = {VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO};
VkResult result = vkCreateSemaphore(vk_device, &info, nullptr, &semaphore);
if (result != VK_SUCCESS)
return VK_NULL_HANDLE;
base::ScopedFD fd = handle.TakeHandle();
const auto is_sync_fd =
handle_type == VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;
const VkImportSemaphoreFdInfoKHR import = {
.sType = VK_STRUCTURE_TYPE_IMPORT_SEMAPHORE_FD_INFO_KHR,
.semaphore = semaphore,
.flags = is_sync_fd ? VK_SEMAPHORE_IMPORT_TEMPORARY_BIT_KHR
: VkSemaphoreImportFlags{0},
.handleType = handle_type,
.fd = fd.release(),
};
result = vkImportSemaphoreFdKHR(vk_device, &import);
if (result != VK_SUCCESS) {
DLOG(ERROR) << "vkImportSemaphoreFdKHR failed: " << result;
vkDestroySemaphore(vk_device, semaphore, nullptr);
// If import failed, we need to close fd manually.
base::ScopedFD close_fd(import.fd);
return VK_NULL_HANDLE;
}
return semaphore;
}
SemaphoreHandle GetVkSemaphoreHandle(
VkDevice vk_device,
VkSemaphore vk_semaphore,
VkExternalSemaphoreHandleTypeFlagBits handle_type) {
VkSemaphoreGetFdInfoKHR info = {VK_STRUCTURE_TYPE_SEMAPHORE_GET_FD_INFO_KHR};
info.semaphore = vk_semaphore;
info.handleType = handle_type;
int fd = -1;
VkResult result = vkGetSemaphoreFdKHR(vk_device, &info, &fd);
if (result != VK_SUCCESS) {
DLOG(ERROR) << "vkGetSemaphoreFdKHR failed: " << result;
return SemaphoreHandle();
}
return SemaphoreHandle(handle_type, base::ScopedFD(fd));
}
} // namespace gpu
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