IABSD.fr/xenocara/lib/mesa/src/vulkan/runtime/vk_sync_binary.h

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• Author : jsg
  Date : 2022-09-02 05:12:48
  Hash : 4968d392
  Message : Import Mesa 22.1.7

• lib/mesa/src/vulkan/runtime/vk_sync_binary.h

• /*
   * 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_SYNC_BINARY_H
  #define VK_SYNC_BINARY_H
  
  #include "vk_sync.h"
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  struct vk_sync_binary_type {
     struct vk_sync_type sync;
     const struct vk_sync_type *timeline_type;
  };
  
  struct vk_sync_binary_type
  vk_sync_binary_get_type(const struct vk_sync_type *timeline_type);
  
  /** Implements a binary vk_sync type on top of a timeline vk_sync
   *
   * This is useful when targeting Windows APIs such as D3D12 which only have
   * timelines and have no concept of a binary synchronization object.  Because
   * binary vk_sync emulation requires tracking additional state (the next time
   * point), fences and semaphores created from this type cannot support any of
   * the sharing APIs.
   */
  struct vk_sync_binary {
     struct vk_sync sync;
  
     uint64_t next_point;
  
     struct vk_sync timeline;
  };
  
  VkResult vk_sync_binary_init(struct vk_device *device,
                               struct vk_sync *sync,
                               uint64_t initial_value);
  
  static inline bool
  vk_sync_type_is_vk_sync_binary(const struct vk_sync_type *type)
  {
     return type->init == vk_sync_binary_init;
  }
  
  static inline struct vk_sync_binary *
  vk_sync_as_binary(struct vk_sync *sync)
  {
     if (!vk_sync_type_is_vk_sync_binary(sync->type))
        return NULL;
  
     return container_of(sync, struct vk_sync_binary, sync);
  }
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* VK_TIMELINE_H */