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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 fence implementation then selects the first type that meets the necessary criterion. In particular, fences can't be timelines and need to support reset and CPU wait. It also auto-selects the fence 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_fence_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, resets, 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>
82 lines
2.7 KiB
C
82 lines
2.7 KiB
C
/*
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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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#ifndef VK_FENCE_H
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#define VK_FENCE_H
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#include "vk_object.h"
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#include "vk_sync.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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struct vk_sync;
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struct vk_fence {
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struct vk_object_base base;
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/* Temporary fence state.
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*
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* A fence *may* have temporary state. That state is added to the fence by
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* an import operation and is reset back to NULL when the fence is reset.
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* A fence with temporary state cannot be signaled because the fence must
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* already be signaled before the temporary state can be exported from the
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* fence in the other process and imported here.
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*/
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struct vk_sync *temporary;
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/** Permanent fence state.
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*
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* Every fence has some form of permanent state.
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*
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* This field must be last
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*/
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_Alignas(8) struct vk_sync permanent;
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};
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VK_DEFINE_NONDISP_HANDLE_CASTS(vk_fence, base, VkFence,
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VK_OBJECT_TYPE_FENCE);
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VkResult vk_fence_create(struct vk_device *device,
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const VkFenceCreateInfo *pCreateInfo,
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const VkAllocationCallbacks *pAllocator,
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struct vk_fence **fence_out);
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void vk_fence_destroy(struct vk_device *device,
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struct vk_fence *fence,
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const VkAllocationCallbacks *pAllocator);
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void vk_fence_reset_temporary(struct vk_device *device,
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struct vk_fence *fence);
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static inline struct vk_sync *
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vk_fence_get_active_sync(struct vk_fence *fence)
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{
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return fence->temporary ? fence->temporary : &fence->permanent;
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* VK_FENCE_H */
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