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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#include "qwaylandeglwindow_p.h"
#include <QtWaylandClient/private/qwaylandscreen_p.h>
#include <QtWaylandClient/private/qwaylandsurface_p.h>
#include "qwaylandglcontext_p.h"
#include <QtGui/private/qeglconvenience_p.h>
#include <QDebug>
#include <QtGui/QWindow>
#include <qpa/qwindowsysteminterface.h>
#include <QOpenGLFramebufferObject>
#include <QOpenGLContext>
QT_BEGIN_NAMESPACE
namespace QtWaylandClient {
QWaylandEglWindow::QWaylandEglWindow(QWindow *window, QWaylandDisplay *display)
: QWaylandWindow(window, display)
, m_clientBufferIntegration(static_cast<QWaylandEglClientBufferIntegration *>(mDisplay->clientBufferIntegration()))
, m_format(window->requestedFormat())
{
connect(display, &QWaylandDisplay::connected, this, [this] {
m_clientBufferIntegration = static_cast<QWaylandEglClientBufferIntegration *>(
mDisplay->clientBufferIntegration());
});
}
QWaylandEglWindow::~QWaylandEglWindow()
{
if (m_eglSurface) {
eglDestroySurface(m_clientBufferIntegration->eglDisplay(), m_eglSurface);
m_eglSurface = 0;
}
if (m_waylandEglWindow)
wl_egl_window_destroy(m_waylandEglWindow);
delete m_contentFBO;
}
QWaylandWindow::WindowType QWaylandEglWindow::windowType() const
{
return QWaylandWindow::Egl;
}
void QWaylandEglWindow::ensureSize()
{
updateSurface(false);
}
void QWaylandEglWindow::setGeometry(const QRect &rect)
{
QWaylandWindow::setGeometry(rect);
// If the surface was invalidated through invalidateSurface() and
// we're now getting a resize we don't want to create it again.
// Just resize the wl_egl_window, the EGLSurface will be created
// the next time makeCurrent is called.
updateSurface(false);
}
void QWaylandEglWindow::updateSurface(bool create)
{
QMargins margins = clientSideMargins();
QRect rect = geometry();
QSize sizeWithMargins = (rect.size() + QSize(margins.left() + margins.right(), margins.top() + margins.bottom())) * scale();
// wl_egl_windows must have both width and height > 0
// mesa's egl returns NULL if we try to create a, invalid wl_egl_window, however not all EGL
// implementations may do that, so check the size ourself. Besides, we must deal with resizing
// a valid window to 0x0, which would make it invalid. Hence, destroy it.
if (sizeWithMargins.isEmpty()) {
if (m_eglSurface) {
eglDestroySurface(m_clientBufferIntegration->eglDisplay(), m_eglSurface);
m_eglSurface = 0;
}
if (m_waylandEglWindow) {
wl_egl_window_destroy(m_waylandEglWindow);
m_waylandEglWindow = 0;
}
mOffset = QPoint();
} else {
QReadLocker locker(&mSurfaceLock);
if (m_waylandEglWindow) {
int current_width, current_height;
static bool disableResizeCheck = qgetenv("QT_WAYLAND_DISABLE_RESIZECHECK").toInt();
if (!disableResizeCheck) {
wl_egl_window_get_attached_size(m_waylandEglWindow, ¤t_width, ¤t_height);
}
if (disableResizeCheck || (current_width != sizeWithMargins.width() || current_height != sizeWithMargins.height()) || m_requestedSize != sizeWithMargins) {
wl_egl_window_resize(m_waylandEglWindow, sizeWithMargins.width(), sizeWithMargins.height(), mOffset.x(), mOffset.y());
m_requestedSize = sizeWithMargins;
mOffset = QPoint();
m_resize = true;
}
} else if (create && mSurface) {
m_waylandEglWindow = wl_egl_window_create(mSurface->object(), sizeWithMargins.width(), sizeWithMargins.height());
m_requestedSize = sizeWithMargins;
}
if (!m_eglSurface && m_waylandEglWindow && create) {
EGLNativeWindowType eglw = (EGLNativeWindowType) m_waylandEglWindow;
QSurfaceFormat fmt = window()->requestedFormat();
if (mDisplay->supportsWindowDecoration())
fmt.setAlphaBufferSize(8);
EGLConfig eglConfig = q_configFromGLFormat(m_clientBufferIntegration->eglDisplay(), fmt);
m_format = q_glFormatFromConfig(m_clientBufferIntegration->eglDisplay(), eglConfig, fmt);
m_eglSurface = eglCreateWindowSurface(m_clientBufferIntegration->eglDisplay(), eglConfig, eglw, 0);
if (Q_UNLIKELY(m_eglSurface == EGL_NO_SURFACE))
qCWarning(lcQpaWayland, "Could not create EGL surface (EGL error 0x%x)\n", eglGetError());
}
}
}
QRect QWaylandEglWindow::contentsRect() const
{
QRect r = geometry();
QMargins m = clientSideMargins();
return QRect(m.left(), m.bottom(), r.width(), r.height());
}
QSurfaceFormat QWaylandEglWindow::format() const
{
return m_format;
}
void QWaylandEglWindow::invalidateSurface()
{
if (m_eglSurface) {
eglDestroySurface(m_clientBufferIntegration->eglDisplay(), m_eglSurface);
m_eglSurface = 0;
}
if (m_waylandEglWindow) {
wl_egl_window_destroy(m_waylandEglWindow);
m_waylandEglWindow = nullptr;
}
delete m_contentFBO;
m_contentFBO = nullptr;
}
EGLSurface QWaylandEglWindow::eglSurface() const
{
return m_eglSurface;
}
GLuint QWaylandEglWindow::contentFBO() const
{
if (!decoration())
return 0;
if (m_resize || !m_contentFBO) {
QOpenGLFramebufferObject *old = m_contentFBO;
QSize fboSize = geometry().size() * scale();
m_contentFBO = new QOpenGLFramebufferObject(fboSize.width(), fboSize.height(), QOpenGLFramebufferObject::CombinedDepthStencil);
delete old;
m_resize = false;
}
return m_contentFBO->handle();
}
GLuint QWaylandEglWindow::contentTexture() const
{
return m_contentFBO->texture();
}
void QWaylandEglWindow::bindContentFBO()
{
if (decoration()) {
contentFBO();
m_contentFBO->bind();
}
}
}
QT_END_NAMESPACE
#include "moc_qwaylandeglwindow_p.cpp"
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