vulkan: Add a common implementation of VkSemaphore
This is built on the new vk_sync primitives. In the vk_physical_device, the driver provides a null-terminated array of vk_sync_type pointers in priority order. The semaphore implementation then selects the first type that meets the necessary criterion. In particular, semaphores may or may not be timelines depending on the VkSemaphoreType. It also auto-selects the semaphore type based on the external handle types provided and can down-grade as needed to support a particular external handle. The implementation itself is mostly copy+pasted from ANV. The primary difference is the fact that anv_semaphore_impl has been replaced with vk_sync. The permanent vk_sync is still embedded (like ANV) but the temporary one is a pointer. This makes stealing the temporary state as part of VkQueueSubmit a bit easier. All of the interesting stuff around waits, signals, etc. is implemented by the vk_sync interface. All this code does is wrap it all in the annoyingly detailed VkFence rules so we can provide the correct Vulkan entrypoint behavior. Reviewed-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com> Acked-by: Bas Nieuwenhuizen <bas@basnieuwenhuizen.nl> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/13427>
This commit is contained in:
Jason Ekstrand
parent
60e7359db0
commit
673b5e97ec
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@ -52,6 +52,8 @@ vulkan_runtime_files = files(
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'vk_queue.c',
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'vk_queue.h',
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'vk_render_pass.c',
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'vk_semaphore.c',
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'vk_semaphore.h',
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'vk_shader_module.c',
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'vk_shader_module.h',
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'vk_sync.c',
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@ -0,0 +1,531 @@
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/*
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* Copyright © 2021 Intel Corporation
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice (including the next
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* paragraph) shall be included in all copies or substantial portions of the
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* Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
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* IN THE SOFTWARE.
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*/
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#include "vk_semaphore.h"
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#include "util/os_time.h"
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#ifndef _WIN32
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#include <unistd.h>
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#endif
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#include "vk_common_entrypoints.h"
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#include "vk_device.h"
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#include "vk_log.h"
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#include "vk_physical_device.h"
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#include "vk_util.h"
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static VkExternalSemaphoreHandleTypeFlags
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vk_sync_semaphore_import_types(const struct vk_sync_type *type,
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VkSemaphoreType semaphore_type)
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{
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VkExternalSemaphoreHandleTypeFlags handle_types = 0;
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if (type->import_opaque_fd)
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handle_types |= VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT;
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if (type->export_sync_file && semaphore_type == VK_SEMAPHORE_TYPE_BINARY)
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handle_types |= VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;
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return handle_types;
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}
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static VkExternalSemaphoreHandleTypeFlags
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vk_sync_semaphore_export_types(const struct vk_sync_type *type,
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VkSemaphoreType semaphore_type)
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{
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VkExternalSemaphoreHandleTypeFlags handle_types = 0;
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if (type->export_opaque_fd)
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handle_types |= VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT;
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if (type->export_sync_file && semaphore_type == VK_SEMAPHORE_TYPE_BINARY)
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handle_types |= VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT;
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return handle_types;
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}
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static VkExternalSemaphoreHandleTypeFlags
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vk_sync_semaphore_handle_types(const struct vk_sync_type *type,
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VkSemaphoreType semaphore_type)
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{
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return vk_sync_semaphore_export_types(type, semaphore_type) &
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vk_sync_semaphore_import_types(type, semaphore_type);
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}
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static const struct vk_sync_type *
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get_semaphore_sync_type(struct vk_physical_device *pdevice,
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VkSemaphoreType semaphore_type,
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VkExternalSemaphoreHandleTypeFlags handle_types)
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{
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assert(semaphore_type == VK_SEMAPHORE_TYPE_BINARY ||
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semaphore_type == VK_SEMAPHORE_TYPE_TIMELINE);
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enum vk_sync_features req_features = VK_SYNC_FEATURE_GPU_WAIT;
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if (semaphore_type == VK_SEMAPHORE_TYPE_TIMELINE) {
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req_features |= VK_SYNC_FEATURE_TIMELINE |
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VK_SYNC_FEATURE_CPU_WAIT;
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} else {
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req_features |= VK_SYNC_FEATURE_BINARY;
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}
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for (const struct vk_sync_type *const *t =
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pdevice->supported_sync_types; *t; t++) {
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if (req_features & ~(*t)->features)
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continue;
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if (handle_types & ~vk_sync_semaphore_handle_types(*t, semaphore_type))
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continue;
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return *t;
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}
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return NULL;
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}
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static VkSemaphoreType
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get_semaphore_type(const void *pNext, uint64_t *initial_value)
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{
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const VkSemaphoreTypeCreateInfo *type_info =
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vk_find_struct_const(pNext, SEMAPHORE_TYPE_CREATE_INFO);
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if (!type_info)
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return VK_SEMAPHORE_TYPE_BINARY;
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if (initial_value)
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*initial_value = type_info->initialValue;
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return type_info->semaphoreType;
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}
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VKAPI_ATTR VkResult VKAPI_CALL
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vk_common_CreateSemaphore(VkDevice _device,
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const VkSemaphoreCreateInfo *pCreateInfo,
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const VkAllocationCallbacks *pAllocator,
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VkSemaphore *pSemaphore)
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{
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VK_FROM_HANDLE(vk_device, device, _device);
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struct vk_semaphore *semaphore;
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assert(pCreateInfo->sType == VK_STRUCTURE_TYPE_SEMAPHORE_CREATE_INFO);
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uint64_t initial_value = 0;
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const VkSemaphoreType semaphore_type =
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get_semaphore_type(pCreateInfo->pNext, &initial_value);
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const VkExportSemaphoreCreateInfo *export =
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vk_find_struct_const(pCreateInfo->pNext, EXPORT_SEMAPHORE_CREATE_INFO);
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VkExternalSemaphoreHandleTypeFlags handle_types =
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export ? export->handleTypes : 0;
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const struct vk_sync_type *sync_type =
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get_semaphore_sync_type(device->physical, semaphore_type, handle_types);
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if (sync_type == NULL) {
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/* We should always be able to get a semaphore type for internal */
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assert(get_semaphore_sync_type(device->physical, semaphore_type, 0) != NULL);
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return vk_errorf(device, VK_ERROR_INVALID_EXTERNAL_HANDLE,
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"Combination of external handle types is unsupported "
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"for VkSemaphore creation.");
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}
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/* Allocate a vk_semaphore + vk_sync implementation. Because the permanent
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* field of vk_semaphore is the base field of the vk_sync implementation,
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* we can make the 2 structures overlap.
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*/
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size_t size = offsetof(struct vk_semaphore, permanent) + sync_type->size;
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semaphore = vk_object_zalloc(device, pAllocator, size,
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VK_OBJECT_TYPE_SEMAPHORE);
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if (semaphore == NULL)
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return vk_error(device, VK_ERROR_OUT_OF_HOST_MEMORY);
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semaphore->type = semaphore_type;
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enum vk_sync_flags sync_flags = 0;
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if (semaphore_type == VK_SEMAPHORE_TYPE_TIMELINE)
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sync_flags |= VK_SYNC_IS_TIMELINE;
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if (handle_types)
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sync_flags |= VK_SYNC_IS_SHAREABLE;
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VkResult result = vk_sync_init(device, &semaphore->permanent,
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sync_type, sync_flags, initial_value);
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if (result != VK_SUCCESS) {
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vk_object_free(device, pAllocator, semaphore);
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return result;
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}
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*pSemaphore = vk_semaphore_to_handle(semaphore);
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return VK_SUCCESS;
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}
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void
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vk_semaphore_reset_temporary(struct vk_device *device,
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struct vk_semaphore *semaphore)
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{
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if (semaphore->temporary == NULL)
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return;
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vk_sync_destroy(device, semaphore->temporary);
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semaphore->temporary = NULL;
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}
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VKAPI_ATTR void VKAPI_CALL
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vk_common_DestroySemaphore(VkDevice _device,
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VkSemaphore _semaphore,
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const VkAllocationCallbacks *pAllocator)
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{
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VK_FROM_HANDLE(vk_device, device, _device);
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VK_FROM_HANDLE(vk_semaphore, semaphore, _semaphore);
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if (semaphore == NULL)
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return;
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vk_semaphore_reset_temporary(device, semaphore);
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vk_sync_finish(device, &semaphore->permanent);
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vk_object_free(device, pAllocator, semaphore);
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}
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VKAPI_ATTR void VKAPI_CALL
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vk_common_GetPhysicalDeviceExternalSemaphoreProperties(
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VkPhysicalDevice physicalDevice,
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const VkPhysicalDeviceExternalSemaphoreInfo *pExternalSemaphoreInfo,
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VkExternalSemaphoreProperties *pExternalSemaphoreProperties)
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{
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VK_FROM_HANDLE(vk_physical_device, pdevice, physicalDevice);
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assert(pExternalSemaphoreInfo->sType ==
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VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_EXTERNAL_SEMAPHORE_INFO);
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const VkExternalSemaphoreHandleTypeFlagBits handle_type =
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pExternalSemaphoreInfo->handleType;
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const VkSemaphoreType semaphore_type =
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get_semaphore_type(pExternalSemaphoreInfo->pNext, NULL);
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const struct vk_sync_type *sync_type =
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get_semaphore_sync_type(pdevice, semaphore_type, handle_type);
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if (sync_type == NULL) {
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pExternalSemaphoreProperties->exportFromImportedHandleTypes = 0;
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pExternalSemaphoreProperties->compatibleHandleTypes = 0;
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pExternalSemaphoreProperties->externalSemaphoreFeatures = 0;
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return;
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}
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VkExternalSemaphoreHandleTypeFlagBits import =
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vk_sync_semaphore_import_types(sync_type, semaphore_type);
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VkExternalSemaphoreHandleTypeFlagBits export =
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vk_sync_semaphore_export_types(sync_type, semaphore_type);
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if (handle_type != VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT) {
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const struct vk_sync_type *opaque_sync_type =
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get_semaphore_sync_type(pdevice, semaphore_type,
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VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT);
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/* If we're a different vk_sync_type than the one selected when only
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* OPAQUE_FD is set, then we can't import/export OPAQUE_FD. Put
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* differently, there can only be one OPAQUE_FD sync type.
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*/
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if (sync_type != opaque_sync_type) {
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import &= ~VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT;
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export &= ~VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT;
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}
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}
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VkExternalSemaphoreHandleTypeFlags compatible = import & export;
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VkExternalSemaphoreFeatureFlags features = 0;
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if (handle_type & export)
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features |= VK_EXTERNAL_SEMAPHORE_FEATURE_EXPORTABLE_BIT;
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if (handle_type & import)
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features |= VK_EXTERNAL_SEMAPHORE_FEATURE_IMPORTABLE_BIT;
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pExternalSemaphoreProperties->exportFromImportedHandleTypes = export;
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pExternalSemaphoreProperties->compatibleHandleTypes = compatible;
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pExternalSemaphoreProperties->externalSemaphoreFeatures = features;
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}
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VKAPI_ATTR VkResult VKAPI_CALL
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vk_common_GetSemaphoreCounterValue(VkDevice _device,
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VkSemaphore _semaphore,
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uint64_t *pValue)
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{
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VK_FROM_HANDLE(vk_device, device, _device);
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VK_FROM_HANDLE(vk_semaphore, semaphore, _semaphore);
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if (vk_device_is_lost(device))
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return VK_ERROR_DEVICE_LOST;
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struct vk_sync *sync = vk_semaphore_get_active_sync(semaphore);
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return vk_sync_get_value(device, sync, pValue);
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}
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VKAPI_ATTR VkResult VKAPI_CALL
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vk_common_WaitSemaphores(VkDevice _device,
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const VkSemaphoreWaitInfo *pWaitInfo,
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uint64_t timeout)
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{
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VK_FROM_HANDLE(vk_device, device, _device);
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if (vk_device_is_lost(device))
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return VK_ERROR_DEVICE_LOST;
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if (pWaitInfo->semaphoreCount == 0)
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return VK_SUCCESS;
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uint64_t abs_timeout_ns = os_time_get_absolute_timeout(timeout);
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const uint32_t wait_count = pWaitInfo->semaphoreCount;
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STACK_ARRAY(struct vk_sync_wait, waits, pWaitInfo->semaphoreCount);
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for (uint32_t i = 0; i < wait_count; i++) {
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VK_FROM_HANDLE(vk_semaphore, semaphore, pWaitInfo->pSemaphores[i]);
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assert(semaphore->type == VK_SEMAPHORE_TYPE_TIMELINE);
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waits[i] = (struct vk_sync_wait) {
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.sync = vk_semaphore_get_active_sync(semaphore),
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.stage_mask = ~(VkPipelineStageFlags2KHR)0,
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.wait_value = pWaitInfo->pValues[i],
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};
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}
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enum vk_sync_wait_flags wait_flags = VK_SYNC_WAIT_COMPLETE;
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if (pWaitInfo->flags & VK_SEMAPHORE_WAIT_ANY_BIT)
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wait_flags |= VK_SYNC_WAIT_ANY;
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VkResult result = vk_sync_wait_many(device, wait_count, waits,
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wait_flags, abs_timeout_ns);
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STACK_ARRAY_FINISH(waits);
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VkResult device_status = vk_device_check_status(device);
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if (device_status != VK_SUCCESS)
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return device_status;
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return result;
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}
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VKAPI_ATTR VkResult VKAPI_CALL
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vk_common_SignalSemaphore(VkDevice _device,
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const VkSemaphoreSignalInfo *pSignalInfo)
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{
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VK_FROM_HANDLE(vk_device, device, _device);
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VK_FROM_HANDLE(vk_semaphore, semaphore, pSignalInfo->semaphore);
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struct vk_sync *sync = vk_semaphore_get_active_sync(semaphore);
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VkResult result;
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/* From the Vulkan 1.2.194 spec:
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*
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* UID-VkSemaphoreSignalInfo-semaphore-03257
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*
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* "semaphore must have been created with a VkSemaphoreType of
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* VK_SEMAPHORE_TYPE_TIMELINE."
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*/
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assert(semaphore->type == VK_SEMAPHORE_TYPE_TIMELINE);
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/* From the Vulkan 1.2.194 spec:
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*
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* VUID-VkSemaphoreSignalInfo-value-03258
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*
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* "value must have a value greater than the current value of the
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* semaphore"
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*
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* Since 0 is the lowest possible semaphore timeline value, we can assert
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* that a non-zero signal value is provided.
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*/
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if (unlikely(pSignalInfo->value == 0)) {
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return vk_device_set_lost(device,
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"Tried to signal a timeline with value 0");
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}
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result = vk_sync_signal(device, sync, pSignalInfo->value);
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if (unlikely(result != VK_SUCCESS))
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return result;
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return VK_SUCCESS;
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}
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#ifndef _WIN32
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VKAPI_ATTR VkResult VKAPI_CALL
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vk_common_ImportSemaphoreFdKHR(VkDevice _device,
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const VkImportSemaphoreFdInfoKHR *pImportSemaphoreFdInfo)
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{
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VK_FROM_HANDLE(vk_device, device, _device);
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VK_FROM_HANDLE(vk_semaphore, semaphore, pImportSemaphoreFdInfo->semaphore);
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assert(pImportSemaphoreFdInfo->sType ==
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VK_STRUCTURE_TYPE_IMPORT_SEMAPHORE_FD_INFO_KHR);
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const int fd = pImportSemaphoreFdInfo->fd;
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const VkExternalSemaphoreHandleTypeFlagBits handle_type =
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pImportSemaphoreFdInfo->handleType;
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struct vk_sync *temporary = NULL, *sync;
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if (pImportSemaphoreFdInfo->flags & VK_SEMAPHORE_IMPORT_TEMPORARY_BIT) {
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/* From the Vulkan 1.2.194 spec:
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*
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* VUID-VkImportSemaphoreFdInfoKHR-flags-03323
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*
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* "If flags contains VK_SEMAPHORE_IMPORT_TEMPORARY_BIT, the
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* VkSemaphoreTypeCreateInfo::semaphoreType field of the semaphore
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* from which handle or name was exported must not be
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* VK_SEMAPHORE_TYPE_TIMELINE"
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*/
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if (unlikely(semaphore->type == VK_SEMAPHORE_TYPE_TIMELINE)) {
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return vk_errorf(device, VK_ERROR_UNKNOWN,
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"Cannot temporarily import into a timeline "
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"semaphore");
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}
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const struct vk_sync_type *sync_type =
|
||||
get_semaphore_sync_type(device->physical, semaphore->type, handle_type);
|
||||
|
||||
VkResult result = vk_sync_create(device, sync_type, 0 /* flags */,
|
||||
0 /* initial_value */, &temporary);
|
||||
if (result != VK_SUCCESS)
|
||||
return result;
|
||||
|
||||
sync = temporary;
|
||||
} else {
|
||||
sync = &semaphore->permanent;
|
||||
}
|
||||
assert(handle_type &
|
||||
vk_sync_semaphore_handle_types(sync->type, semaphore->type));
|
||||
|
||||
VkResult result;
|
||||
switch (pImportSemaphoreFdInfo->handleType) {
|
||||
case VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT:
|
||||
result = vk_sync_import_opaque_fd(device, sync, fd);
|
||||
break;
|
||||
|
||||
case VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT:
|
||||
result = vk_sync_import_sync_file(device, sync, fd);
|
||||
break;
|
||||
|
||||
default:
|
||||
result = vk_error(semaphore, VK_ERROR_INVALID_EXTERNAL_HANDLE);
|
||||
}
|
||||
|
||||
if (result != VK_SUCCESS) {
|
||||
if (temporary != NULL)
|
||||
vk_sync_destroy(device, temporary);
|
||||
return result;
|
||||
}
|
||||
|
||||
/* From the Vulkan 1.2.194 spec:
|
||||
*
|
||||
* "Importing a semaphore payload from a file descriptor transfers
|
||||
* ownership of the file descriptor from the application to the Vulkan
|
||||
* implementation. The application must not perform any operations on
|
||||
* the file descriptor after a successful import."
|
||||
*
|
||||
* If the import fails, we leave the file descriptor open.
|
||||
*/
|
||||
if (fd != -1)
|
||||
close(fd);
|
||||
|
||||
/* From a spec correctness point of view, we could probably replace the
|
||||
* semaphore's temporary payload with the new vk_sync at the top. However,
|
||||
* we choose to be nice to applications and only replace the semaphore if
|
||||
* the import succeeded.
|
||||
*/
|
||||
if (temporary) {
|
||||
vk_semaphore_reset_temporary(device, semaphore);
|
||||
semaphore->temporary = temporary;
|
||||
}
|
||||
|
||||
return VK_SUCCESS;
|
||||
}
|
||||
|
||||
VKAPI_ATTR VkResult VKAPI_CALL
|
||||
vk_common_GetSemaphoreFdKHR(VkDevice _device,
|
||||
const VkSemaphoreGetFdInfoKHR *pGetFdInfo,
|
||||
int *pFd)
|
||||
{
|
||||
VK_FROM_HANDLE(vk_device, device, _device);
|
||||
VK_FROM_HANDLE(vk_semaphore, semaphore, pGetFdInfo->semaphore);
|
||||
|
||||
assert(pGetFdInfo->sType == VK_STRUCTURE_TYPE_SEMAPHORE_GET_FD_INFO_KHR);
|
||||
|
||||
struct vk_sync *sync = vk_semaphore_get_active_sync(semaphore);
|
||||
|
||||
VkResult result;
|
||||
switch (pGetFdInfo->handleType) {
|
||||
case VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_OPAQUE_FD_BIT:
|
||||
result = vk_sync_export_opaque_fd(device, sync, pFd);
|
||||
if (result != VK_SUCCESS)
|
||||
return result;
|
||||
break;
|
||||
|
||||
case VK_EXTERNAL_SEMAPHORE_HANDLE_TYPE_SYNC_FD_BIT:
|
||||
/* From the Vulkan 1.2.194 spec:
|
||||
*
|
||||
* VUID-VkSemaphoreGetFdInfoKHR-handleType-03253
|
||||
*
|
||||
* "If handleType refers to a handle type with copy payload
|
||||
* transference semantics, semaphore must have been created with a
|
||||
* VkSemaphoreType of VK_SEMAPHORE_TYPE_BINARY."
|
||||
*/
|
||||
if (unlikely(semaphore->type != VK_SEMAPHORE_TYPE_BINARY)) {
|
||||
return vk_errorf(device, VK_ERROR_INVALID_EXTERNAL_HANDLE,
|
||||
"Cannot export a timeline semaphore as SYNC_FD");
|
||||
}
|
||||
|
||||
result = vk_sync_export_sync_file(device, sync, pFd);
|
||||
if (unlikely(result != VK_SUCCESS))
|
||||
return result;
|
||||
|
||||
/* From the Vulkan 1.2.194 spec:
|
||||
*
|
||||
* "Export operations have the same transference as the specified
|
||||
* handle type’s import operations. Additionally, exporting a
|
||||
* semaphore payload to a handle with copy transference has the same
|
||||
* side effects on the source semaphore’s payload as executing a
|
||||
* semaphore wait operation."
|
||||
*
|
||||
* In other words, exporting a sync file also resets the semaphore. We
|
||||
* only care about this for the permanent payload because the temporary
|
||||
* payload will be destroyed below.
|
||||
*/
|
||||
if (sync == &semaphore->permanent) {
|
||||
result = vk_sync_reset(device, sync);
|
||||
if (unlikely(result != VK_SUCCESS))
|
||||
return result;
|
||||
}
|
||||
break;
|
||||
|
||||
default:
|
||||
unreachable("Invalid semaphore export handle type");
|
||||
}
|
||||
|
||||
/* From the Vulkan 1.2.194 spec:
|
||||
*
|
||||
* "Export operations have the same transference as the specified
|
||||
* handle type’s import operations. [...] If the semaphore was using
|
||||
* a temporarily imported payload, the semaphore’s prior permanent
|
||||
* payload will be restored."
|
||||
*/
|
||||
vk_semaphore_reset_temporary(device, semaphore);
|
||||
|
||||
return VK_SUCCESS;
|
||||
}
|
||||
|
||||
#endif /* !defined(_WIN32) */
|
||||
|
|
@ -0,0 +1,78 @@
|
|||
/*
|
||||
* Copyright © 2021 Intel Corporation
|
||||
*
|
||||
* Permission is hereby granted, free of charge, to any person obtaining a
|
||||
* copy of this software and associated documentation files (the "Software"),
|
||||
* to deal in the Software without restriction, including without limitation
|
||||
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
|
||||
* and/or sell copies of the Software, and to permit persons to whom the
|
||||
* Software is furnished to do so, subject to the following conditions:
|
||||
*
|
||||
* The above copyright notice and this permission notice (including the next
|
||||
* paragraph) shall be included in all copies or substantial portions of the
|
||||
* Software.
|
||||
*
|
||||
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
||||
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
|
||||
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
|
||||
* IN THE SOFTWARE.
|
||||
*/
|
||||
#ifndef VK_SEMAPHORE_H
|
||||
#define VK_SEMAPHORE_H
|
||||
|
||||
#include "vk_object.h"
|
||||
#include "vk_sync.h"
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
struct vk_sync;
|
||||
|
||||
struct vk_semaphore {
|
||||
struct vk_object_base base;
|
||||
|
||||
/** VkSemaphoreTypeCreateInfo::semaphoreType */
|
||||
VkSemaphoreType type;
|
||||
|
||||
/* Temporary semaphore state.
|
||||
*
|
||||
* A semaphore *may* have temporary state. That state is added to the
|
||||
* semaphore by an import operation and is reset back to NULL when the
|
||||
* semaphore is reset. A semaphore with temporary state cannot be signaled
|
||||
* because the semaphore must already be signaled before the temporary
|
||||
* state can be exported from the semaphore in the other process and
|
||||
* imported here.
|
||||
*/
|
||||
struct vk_sync *temporary;
|
||||
|
||||
/** Permanent semaphore state.
|
||||
*
|
||||
* Every semaphore has some form of permanent state.
|
||||
*
|
||||
* This field must be last
|
||||
*/
|
||||
_Alignas(8) struct vk_sync permanent;
|
||||
};
|
||||
|
||||
VK_DEFINE_NONDISP_HANDLE_CASTS(vk_semaphore, base, VkSemaphore,
|
||||
VK_OBJECT_TYPE_SEMAPHORE);
|
||||
|
||||
void vk_semaphore_reset_temporary(struct vk_device *device,
|
||||
struct vk_semaphore *semaphore);
|
||||
|
||||
static inline struct vk_sync *
|
||||
vk_semaphore_get_active_sync(struct vk_semaphore *semaphore)
|
||||
{
|
||||
return semaphore->temporary ? semaphore->temporary : &semaphore->permanent;
|
||||
}
|
||||
|
||||
#ifdef __cplusplus
|
||||
}
|
||||
#endif
|
||||
|
||||
#endif /* VK_SEMAPHORE_H */
|
||||
|
||||
Loading…
Reference in New Issue