1// Copyright (C) 2019 The Qt Company Ltd.
2// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
3
4#include "qwaylandvulkaninstance_p.h"
5#include "qwaylandwindow_p.h"
6#include "qwaylandscreen_p.h"
7#include "qwaylanddisplay_p.h"
8
9QT_BEGIN_NAMESPACE
10
11namespace QtWaylandClient {
12
13QWaylandVulkanInstance::QWaylandVulkanInstance(QVulkanInstance *instance)
14 : m_instance(instance)
15{
16 loadVulkanLibrary(QStringLiteral("vulkan"), defaultLibraryVersion: 1);
17}
18
19QWaylandVulkanInstance::~QWaylandVulkanInstance() = default;
20
21void QWaylandVulkanInstance::createOrAdoptInstance()
22{
23 QByteArrayList extraExtensions;
24 extraExtensions << QByteArrayLiteral("VK_KHR_wayland_surface");
25 initInstance(instance: m_instance, extraExts: extraExtensions);
26
27 if (!m_vkInst)
28 return;
29
30 m_getPhysDevPresSupport = reinterpret_cast<PFN_vkGetPhysicalDeviceWaylandPresentationSupportKHR>(
31 m_vkGetInstanceProcAddr(m_vkInst, "vkGetPhysicalDeviceWaylandPresentationSupportKHR"));
32 if (!m_getPhysDevPresSupport)
33 qWarning() << "Failed to find vkGetPhysicalDeviceWaylandPresentationSupportKHR";
34}
35
36bool QWaylandVulkanInstance::supportsPresent(VkPhysicalDevice physicalDevice,
37 uint32_t queueFamilyIndex,
38 QWindow *window)
39{
40 if (!m_getPhysDevPresSupport || !m_getPhysDevSurfaceSupport)
41 return true;
42
43 auto *w = static_cast<QWaylandWindow *>(window->handle());
44 if (!w) {
45 qWarning() << "Attempted to call supportsPresent() without a valid platform window";
46 return false;
47 }
48 wl_display *display = w->display()->wl_display();
49 bool ok = m_getPhysDevPresSupport(physicalDevice, queueFamilyIndex, display);
50
51 VkSurfaceKHR surface = QVulkanInstance::surfaceForWindow(window);
52 VkBool32 supported = false;
53 m_getPhysDevSurfaceSupport(physicalDevice, queueFamilyIndex, surface, &supported);
54 ok &= bool(supported);
55
56 return ok;
57}
58
59VkSurfaceKHR QWaylandVulkanInstance::createSurface(QWaylandWindow *window)
60{
61 VkSurfaceKHR surface = VK_NULL_HANDLE;
62
63 if (!m_createSurface) {
64 m_createSurface = reinterpret_cast<PFN_vkCreateWaylandSurfaceKHR>(
65 m_vkGetInstanceProcAddr(m_vkInst, "vkCreateWaylandSurfaceKHR"));
66 }
67 if (!m_createSurface) {
68 qWarning() << "Failed to find vkCreateWaylandSurfaceKHR";
69 return surface;
70 }
71
72 VkWaylandSurfaceCreateInfoKHR surfaceInfo;
73 memset(s: &surfaceInfo, c: 0, n: sizeof(surfaceInfo));
74 surfaceInfo.sType = VK_STRUCTURE_TYPE_WAYLAND_SURFACE_CREATE_INFO_KHR;
75 surfaceInfo.display = window->display()->wl_display();
76 surfaceInfo.surface = window->wlSurface();
77 VkResult err = m_createSurface(m_vkInst, &surfaceInfo, nullptr, &surface);
78 if (err != VK_SUCCESS)
79 qWarning(msg: "Failed to create Vulkan surface: %d", err);
80
81 return surface;
82}
83
84void QWaylandVulkanInstance::presentAboutToBeQueued(QWindow *window)
85{
86 auto *w = static_cast<QWaylandWindow *>(window->handle());
87 if (!w) {
88 qWarning() << "Attempted to call presentAboutToBeQueued() without a valid platform window";
89 return;
90 }
91
92 bool ok;
93 int frameCallbackTimeout = qEnvironmentVariableIntValue(varName: "QT_WAYLAND_FRAME_CALLBACK_TIMEOUT", ok: &ok);
94
95 if (ok)
96 mFrameCallbackTimeout = frameCallbackTimeout;
97
98 if (w->format().swapInterval() > 0)
99 w->waitForFrameSync(timeout: mFrameCallbackTimeout);
100
101 w->handleUpdate();
102}
103
104void QWaylandVulkanInstance::beginFrame(QWindow *window)
105{
106 auto *w = static_cast<QWaylandWindow *>(window->handle());
107 if (!w) {
108 qWarning() << "Attempted to call beginFrame() without a valid platform window";
109 return;
110 }
111 w->beginFrame();
112}
113
114void QWaylandVulkanInstance::endFrame(QWindow *window)
115{
116 auto *w = static_cast<QWaylandWindow *>(window->handle());
117 if (!w) {
118 qWarning() << "Attempted to call endFrame() without a valid platform window";
119 return;
120 }
121 w->endFrame();
122}
123
124} // namespace QtWaylandClient
125
126QT_END_NAMESPACE
127

source code of qtwayland/src/client/qwaylandvulkaninstance.cpp