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39
40#include "qwaylandeglwindow.h"
41
42#include <QtWaylandClient/private/qwaylandscreen_p.h>
43#include "qwaylandglcontext.h"
44
45#include <QtEglSupport/private/qeglconvenience_p.h>
46
47#include <QDebug>
48#include <QtGui/QWindow>
49#include <qpa/qwindowsysteminterface.h>
50#include <QOpenGLFramebufferObject>
51#include <QOpenGLContext>
52
53QT_BEGIN_NAMESPACE
54
55namespace QtWaylandClient {
56
57QWaylandEglWindow::QWaylandEglWindow(QWindow *window, QWaylandDisplay *display)
58 : QWaylandWindow(window, display)
59 , m_clientBufferIntegration(static_cast<QWaylandEglClientBufferIntegration *>(mDisplay->clientBufferIntegration()))
60 , m_format(window->requestedFormat())
61{
62}
63
64QWaylandEglWindow::~QWaylandEglWindow()
65{
66 if (m_eglSurface) {
67 eglDestroySurface(dpy: m_clientBufferIntegration->eglDisplay(), surface: m_eglSurface);
68 m_eglSurface = 0;
69 }
70
71 if (m_waylandEglWindow)
72 wl_egl_window_destroy(egl_window: m_waylandEglWindow);
73
74 delete m_contentFBO;
75}
76
77QWaylandWindow::WindowType QWaylandEglWindow::windowType() const
78{
79 return QWaylandWindow::Egl;
80}
81
82void QWaylandEglWindow::ensureSize()
83{
84 updateSurface(create: false);
85}
86
87void QWaylandEglWindow::setGeometry(const QRect &rect)
88{
89 QWaylandWindow::setGeometry(rect);
90 // If the surface was invalidated through invalidateSurface() and
91 // we're now getting a resize we don't want to create it again.
92 // Just resize the wl_egl_window, the EGLSurface will be created
93 // the next time makeCurrent is called.
94 updateSurface(create: false);
95}
96
97void QWaylandEglWindow::updateSurface(bool create)
98{
99 QMargins margins = frameMargins();
100 QRect rect = geometry();
101 QSize sizeWithMargins = (rect.size() + QSize(margins.left() + margins.right(), margins.top() + margins.bottom())) * scale();
102
103 // wl_egl_windows must have both width and height > 0
104 // mesa's egl returns NULL if we try to create a, invalid wl_egl_window, however not all EGL
105 // implementations may do that, so check the size ourself. Besides, we must deal with resizing
106 // a valid window to 0x0, which would make it invalid. Hence, destroy it.
107 if (sizeWithMargins.isEmpty()) {
108 if (m_eglSurface) {
109 eglDestroySurface(dpy: m_clientBufferIntegration->eglDisplay(), surface: m_eglSurface);
110 m_eglSurface = 0;
111 }
112 if (m_waylandEglWindow) {
113 wl_egl_window_destroy(egl_window: m_waylandEglWindow);
114 m_waylandEglWindow = 0;
115 }
116 mOffset = QPoint();
117 } else {
118 if (m_waylandEglWindow) {
119 int current_width, current_height;
120 static bool disableResizeCheck = qgetenv(varName: "QT_WAYLAND_DISABLE_RESIZECHECK").toInt();
121
122 if (!disableResizeCheck) {
123 wl_egl_window_get_attached_size(egl_window: m_waylandEglWindow, width: &current_width, height: &current_height);
124 }
125 if (disableResizeCheck || (current_width != sizeWithMargins.width() || current_height != sizeWithMargins.height())) {
126 wl_egl_window_resize(egl_window: m_waylandEglWindow, width: sizeWithMargins.width(), height: sizeWithMargins.height(), dx: mOffset.x(), dy: mOffset.y());
127 mOffset = QPoint();
128
129 m_resize = true;
130 }
131 } else if (create && wlSurface()) {
132 m_waylandEglWindow = wl_egl_window_create(wlSurface(), sizeWithMargins.width(), sizeWithMargins.height());
133 }
134
135 if (!m_eglSurface && m_waylandEglWindow && create) {
136 EGLNativeWindowType eglw = (EGLNativeWindowType) m_waylandEglWindow;
137 QSurfaceFormat fmt = window()->requestedFormat();
138
139 if (mDisplay->supportsWindowDecoration())
140 fmt.setAlphaBufferSize(8);
141 EGLConfig eglConfig = q_configFromGLFormat(display: m_clientBufferIntegration->eglDisplay(), format: fmt);
142 m_format = q_glFormatFromConfig(display: m_clientBufferIntegration->eglDisplay(), config: eglConfig);
143 m_eglSurface = eglCreateWindowSurface(dpy: m_clientBufferIntegration->eglDisplay(), config: eglConfig, win: eglw, attrib_list: 0);
144 if (Q_UNLIKELY(m_eglSurface == EGL_NO_SURFACE))
145 qCWarning(lcQpaWayland, "Could not create EGL surface (EGL error 0x%x)\n", eglGetError());
146 }
147 }
148}
149
150QRect QWaylandEglWindow::contentsRect() const
151{
152 QRect r = geometry();
153 QMargins m = frameMargins();
154 return QRect(m.left(), m.bottom(), r.width(), r.height());
155}
156
157QSurfaceFormat QWaylandEglWindow::format() const
158{
159 return m_format;
160}
161
162void QWaylandEglWindow::invalidateSurface()
163{
164 if (m_eglSurface) {
165 eglDestroySurface(dpy: m_clientBufferIntegration->eglDisplay(), surface: m_eglSurface);
166 m_eglSurface = 0;
167 }
168 if (m_waylandEglWindow) {
169 wl_egl_window_destroy(egl_window: m_waylandEglWindow);
170 m_waylandEglWindow = nullptr;
171 }
172}
173
174EGLSurface QWaylandEglWindow::eglSurface() const
175{
176 return m_eglSurface;
177}
178
179GLuint QWaylandEglWindow::contentFBO() const
180{
181 if (!decoration())
182 return 0;
183
184 if (m_resize || !m_contentFBO) {
185 QOpenGLFramebufferObject *old = m_contentFBO;
186 QSize fboSize = geometry().size() * scale();
187 m_contentFBO = new QOpenGLFramebufferObject(fboSize.width(), fboSize.height(), QOpenGLFramebufferObject::CombinedDepthStencil);
188
189 delete old;
190 m_resize = false;
191 }
192
193 return m_contentFBO->handle();
194}
195
196GLuint QWaylandEglWindow::contentTexture() const
197{
198 return m_contentFBO->texture();
199}
200
201void QWaylandEglWindow::bindContentFBO()
202{
203 if (decoration()) {
204 contentFBO();
205 m_contentFBO->bind();
206 }
207}
208
209}
210
211QT_END_NAMESPACE
212

source code of qtwayland/src/hardwareintegration/client/wayland-egl/qwaylandeglwindow.cpp