+/*
+ * Copyright (c) 2021 Arm Limited.
+ *
+ * SPDX-License-Identifier: MIT
+ *
+ * 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 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.
+ */
+
+#pragma once
+
+#include <cassert>
+#include <stdint.h>
+
+#include <vulkan/vk_icd.h>
+
+namespace util
+{
+
+/**
+ * @brief Set of WSI platforms.
+ * @note This could be implemented via std::unordered_set, but would require handling allocation callbacks and would
+ * therefore be less convenient to use. Instead, we can store all info in the bits of uint64_t.
+ */
+class wsi_platform_set
+{
+public:
+ void add(VkIcdWsiPlatform p)
+ {
+ m_platforms |= (static_cast<uint64_t>(1) << to_int(p));
+ }
+
+ bool contains(VkIcdWsiPlatform p) const
+ {
+ return (m_platforms & (static_cast<uint64_t>(1) << to_int(p))) != 0;
+ }
+
+private:
+ /**
+ * @brief Convert a VkIcdWsiPlatform to an integer between 0-63.
+ */
+ static int to_int(VkIcdWsiPlatform p)
+ {
+ assert(static_cast<int>(p) >= 0 && static_cast<int>(p) < 64);
+ return static_cast<int>(p);
+ }
+
+ uint64_t m_platforms = 0;
+};
+
+} /* namespace util */