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39 | |
40 | #include "qxcbvulkaninstance.h" |
41 | #include "qxcbwindow.h" |
42 | #include "qxcbscreen.h" |
43 | |
44 | QT_BEGIN_NAMESPACE |
45 | |
46 | QXcbVulkanInstance::QXcbVulkanInstance(QVulkanInstance *instance) |
47 | : m_instance(instance), |
48 | m_getPhysDevPresSupport(nullptr), |
49 | m_createSurface(nullptr) |
50 | { |
51 | loadVulkanLibrary(QStringLiteral("vulkan" )); |
52 | } |
53 | |
54 | QXcbVulkanInstance::~QXcbVulkanInstance() |
55 | { |
56 | } |
57 | |
58 | void QXcbVulkanInstance::createOrAdoptInstance() |
59 | { |
60 | initInstance(instance: m_instance, extraExts: QByteArrayList() << QByteArrayLiteral("VK_KHR_xcb_surface" )); |
61 | |
62 | if (!m_vkInst) |
63 | return; |
64 | |
65 | m_getPhysDevPresSupport = reinterpret_cast<PFN_vkGetPhysicalDeviceXcbPresentationSupportKHR>( |
66 | m_vkGetInstanceProcAddr(m_vkInst, "vkGetPhysicalDeviceXcbPresentationSupportKHR" )); |
67 | if (!m_getPhysDevPresSupport) |
68 | qWarning(msg: "Failed to find vkGetPhysicalDeviceXcbPresentationSupportKHR" ); |
69 | } |
70 | |
71 | bool QXcbVulkanInstance::supportsPresent(VkPhysicalDevice physicalDevice, |
72 | uint32_t queueFamilyIndex, |
73 | QWindow *window) |
74 | { |
75 | if (!m_getPhysDevPresSupport || !m_getPhysDevSurfaceSupport) |
76 | return true; |
77 | |
78 | QXcbWindow *w = static_cast<QXcbWindow *>(window->handle()); |
79 | if (!w) { |
80 | qWarning(msg: "Attempted to call supportsPresent() without a valid platform window" ); |
81 | return false; |
82 | } |
83 | xcb_connection_t *connection = w->xcbScreen()->xcb_connection(); |
84 | bool ok = m_getPhysDevPresSupport(physicalDevice, queueFamilyIndex, connection, w->visualId()); |
85 | |
86 | VkSurfaceKHR surface = QVulkanInstance::surfaceForWindow(window); |
87 | VkBool32 supported = false; |
88 | m_getPhysDevSurfaceSupport(physicalDevice, queueFamilyIndex, surface, &supported); |
89 | ok &= bool(supported); |
90 | |
91 | return ok; |
92 | } |
93 | |
94 | VkSurfaceKHR QXcbVulkanInstance::createSurface(QXcbWindow *window) |
95 | { |
96 | VkSurfaceKHR surface = VK_NULL_HANDLE; |
97 | |
98 | if (!m_createSurface) { |
99 | m_createSurface = reinterpret_cast<PFN_vkCreateXcbSurfaceKHR>( |
100 | m_vkGetInstanceProcAddr(m_vkInst, "vkCreateXcbSurfaceKHR" )); |
101 | } |
102 | if (!m_createSurface) { |
103 | qWarning(msg: "Failed to find vkCreateXcbSurfaceKHR" ); |
104 | return surface; |
105 | } |
106 | |
107 | VkXcbSurfaceCreateInfoKHR surfaceInfo; |
108 | memset(s: &surfaceInfo, c: 0, n: sizeof(surfaceInfo)); |
109 | surfaceInfo.sType = VK_STRUCTURE_TYPE_XCB_SURFACE_CREATE_INFO_KHR; |
110 | surfaceInfo.connection = window->xcbScreen()->xcb_connection(); |
111 | surfaceInfo.window = window->xcb_window(); |
112 | VkResult err = m_createSurface(m_vkInst, &surfaceInfo, nullptr, &surface); |
113 | if (err != VK_SUCCESS) |
114 | qWarning(msg: "Failed to create Vulkan surface: %d" , err); |
115 | |
116 | return surface; |
117 | } |
118 | |
119 | void QXcbVulkanInstance::presentQueued(QWindow *window) |
120 | { |
121 | QXcbWindow *w = static_cast<QXcbWindow *>(window->handle()); |
122 | if (!w) { |
123 | qWarning(msg: "Attempted to call presentQueued() without a valid platform window" ); |
124 | return; |
125 | } |
126 | |
127 | if (w->needsSync()) |
128 | w->postSyncWindowRequest(); |
129 | } |
130 | |
131 | QT_END_NAMESPACE |
132 | |