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ba0684b5e0
The VK_KHR_external_[fence|semaphore]_fd extensions allow sync primitives to be signalled without the use of QueueSubmit. Using these extensions in AcquireNextImage instead of using QueueSubmit offers two advantages: (1) there is no waiting for work to complete in the queue before the primitives are signalled and (2) there is no data race if the application happens to call QueueSubmit on the same queue at the same time. The QueueSubmit method of signalling sync primitives continues to be used for ICDs that do not support the external FD extensions. Signed-off-by: David Harvey-Macaulay <david.harvey-macaulay@arm.com> Change-Id: Ib4a922d44430110e2353a4e0221e27017e72abab
93 lines
2.4 KiB
C++
93 lines
2.4 KiB
C++
/*
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* Copyright (c) 2021-2022 Arm Limited.
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*
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* SPDX-License-Identifier: MIT
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to
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* deal in the Software without restriction, including without limitation the
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* rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
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* sell copies of the Software, and to permit persons to whom the Software is
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* 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 shall be included in all
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* copies or substantial portions of the 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 THE
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* 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 FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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/**
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* @file helpers.hpp
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*
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* @brief Contains common utility functions used across the project.
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*/
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#pragma once
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#include <vulkan/vulkan.h>
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/*
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* Conditional return statement. This allows functions to return early for
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* failing Vulkan commands with a terse syntax.
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*
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* Example usage:
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*
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* VkResult foo()
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* {
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* TRY(vkCommand());
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* return VK_SUCCESS;
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* }
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*
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* The above is equivalent to:
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*
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* VkResult foo()
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* {
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* VkResult result = vkCommand();
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* if (result != VK_SUCCESS)
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* {
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* return result;
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* }
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* return VK_SUCCESS;
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* }
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*/
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#define TRY(expression) \
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do \
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{ \
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VkResult try_result = expression; \
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if (try_result != VK_SUCCESS) \
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{ \
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return try_result; \
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} \
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} \
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while (0)
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namespace util
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{
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template <typename T>
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const T *find_extension(VkStructureType sType, const void *pNext)
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{
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auto entry = reinterpret_cast<const VkBaseOutStructure *>(pNext);
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while (entry && entry->sType != sType)
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{
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entry = entry->pNext;
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}
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return reinterpret_cast<const T *>(entry);
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}
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class noncopyable
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{
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protected:
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noncopyable() = default;
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~noncopyable() = default;
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private:
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noncopyable(const noncopyable &) = delete;
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noncopyable& operator=(const noncopyable &) = delete;
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};
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} // namespace util
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