[desktop] More qt_common reorganization (#3916)

Ported from QML branch.

Main "big" change is that EmuThread is now a shared state in QtCommon,
not individually managed/passed around by GRenderWindow and MainWindow.

Signed-off-by: crueter <crueter@eden-emu.dev>
Reviewed-on: https://git.eden-emu.dev/eden-emu/eden/pulls/3916
Reviewed-by: Lizzie <lizzie@eden-emu.dev>
Reviewed-by: MaranBr <maranbr@eden-emu.dev>

src/qt_common/util/vk.h

@@ -0,0 +1,71 @@
+// SPDX-FileCopyrightText: Copyright 2026 Eden Emulator Project
+// SPDX-License-Identifier: GPL-3.0-or-later
+
+// SPDX-FileCopyrightText: 2023 yuzu Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#pragma once
+
+#include <string>
+#include <string_view>
+#include <vector>
+#include "common/common_types.h"
+#include "common/settings_enums.h"
+#include "vulkan/vulkan_core.h"
+
+static const std::vector<VkPresentModeKHR> default_present_modes{VK_PRESENT_MODE_IMMEDIATE_KHR,
+                                                                 VK_PRESENT_MODE_FIFO_KHR};
+
+// Converts a setting to a present mode (or vice versa)
+static inline constexpr VkPresentModeKHR VSyncSettingToMode(Settings::VSyncMode mode) {
+    switch (mode) {
+    case Settings::VSyncMode::Immediate:
+        return VK_PRESENT_MODE_IMMEDIATE_KHR;
+    case Settings::VSyncMode::Mailbox:
+        return VK_PRESENT_MODE_MAILBOX_KHR;
+    case Settings::VSyncMode::Fifo:
+        return VK_PRESENT_MODE_FIFO_KHR;
+    case Settings::VSyncMode::FifoRelaxed:
+        return VK_PRESENT_MODE_FIFO_RELAXED_KHR;
+    default:
+        return VK_PRESENT_MODE_FIFO_KHR;
+    }
+}
+
+static inline constexpr Settings::VSyncMode PresentModeToSetting(VkPresentModeKHR mode) {
+    switch (mode) {
+    case VK_PRESENT_MODE_IMMEDIATE_KHR:
+        return Settings::VSyncMode::Immediate;
+    case VK_PRESENT_MODE_MAILBOX_KHR:
+        return Settings::VSyncMode::Mailbox;
+    case VK_PRESENT_MODE_FIFO_KHR:
+        return Settings::VSyncMode::Fifo;
+    case VK_PRESENT_MODE_FIFO_RELAXED_KHR:
+        return Settings::VSyncMode::FifoRelaxed;
+    default:
+        return Settings::VSyncMode::Fifo;
+    }
+}
+
+class QWindow;
+
+namespace Settings {
+enum class VSyncMode : u32;
+}
+
+namespace VkDeviceInfo {
+// Short class to record Vulkan driver information for configuration purposes
+class Record {
+public:
+    explicit Record(std::string_view name, const std::vector<VkPresentModeKHR>& vsync_modes,
+                    bool has_broken_compute);
+    ~Record();
+
+    const std::string name;
+    const std::vector<VkPresentModeKHR> vsync_support;
+    const bool has_broken_compute;
+};
+
+// TODO(crueter): Port some configure_graphics.cpp stuff
+void PopulateRecords(std::vector<Record>& records, QWindow* window);
+} // namespace VkDeviceInfo