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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 "qwaylandeglclientbufferintegration_p.h"
#include "qwaylandeglwindow_p.h"
#include "qwaylandglcontext_p.h"
#include <wayland-client-core.h>
#include <QtCore/QDebug>
#include <private/qeglconvenience_p.h>
#ifndef EGL_EXT_platform_base
typedef EGLDisplay (*PFNEGLGETPLATFORMDISPLAYEXTPROC) (EGLenum platform, void *native_display, const EGLint *attrib_list);
#endif
#ifndef EGL_PLATFORM_WAYLAND_KHR
#define EGL_PLATFORM_WAYLAND_KHR 0x31D8
#endif
QT_BEGIN_NAMESPACE
namespace QtWaylandClient {
static const char *qwaylandegl_threadedgl_blacklist_vendor[] = {
0
};
QWaylandEglClientBufferIntegration::QWaylandEglClientBufferIntegration()
{
qCDebug(lcQpaWayland) << "Using Wayland-EGL";
}
QWaylandEglClientBufferIntegration::~QWaylandEglClientBufferIntegration()
{
eglTerminate(m_eglDisplay);
}
void QWaylandEglClientBufferIntegration::initialize(QWaylandDisplay *display)
{
#if QT_CONFIG(egl_extension_platform_wayland)
m_eglDisplay = eglGetPlatformDisplay(EGL_PLATFORM_WAYLAND_EXT, display->wl_display(), nullptr);
#else
if (q_hasEglExtension(EGL_NO_DISPLAY, "EGL_EXT_platform_base")) {
if (q_hasEglExtension(EGL_NO_DISPLAY, "EGL_KHR_platform_wayland") ||
q_hasEglExtension(EGL_NO_DISPLAY, "EGL_EXT_platform_wayland") ||
q_hasEglExtension(EGL_NO_DISPLAY, "EGL_MESA_platform_wayland")) {
static PFNEGLGETPLATFORMDISPLAYEXTPROC eglGetPlatformDisplay = nullptr;
if (!eglGetPlatformDisplay)
eglGetPlatformDisplay = (PFNEGLGETPLATFORMDISPLAYEXTPROC)eglGetProcAddress("eglGetPlatformDisplayEXT");
m_eglDisplay = eglGetPlatformDisplay(EGL_PLATFORM_WAYLAND_KHR, display->wl_display(), nullptr);
} else {
qCWarning(lcQpaWayland) << "The EGL implementation does not support the Wayland platform";
return;
}
} else {
QByteArray eglPlatform = qgetenv("EGL_PLATFORM");
if (eglPlatform.isEmpty()) {
setenv("EGL_PLATFORM","wayland",true);
}
m_eglDisplay = eglGetDisplay((EGLNativeDisplayType) display->wl_display());
}
#endif
m_display = display;
if (m_eglDisplay == EGL_NO_DISPLAY) {
qCWarning(lcQpaWayland) << "EGL not available";
return;
}
EGLint major,minor;
if (!eglInitialize(m_eglDisplay, &major, &minor)) {
qCWarning(lcQpaWayland) << "Failed to initialize EGL display" << Qt::hex << eglGetError();
m_eglDisplay = EGL_NO_DISPLAY;
return;
}
m_supportsThreading = true;
if (qEnvironmentVariableIsSet("QT_OPENGL_NO_SANITY_CHECK"))
return;
const char *vendor = eglQueryString(m_eglDisplay, EGL_VENDOR);
for (int i = 0; qwaylandegl_threadedgl_blacklist_vendor[i]; ++i) {
if (strstr(vendor, qwaylandegl_threadedgl_blacklist_vendor[i]) != 0) {
m_supportsThreading = false;
break;
}
}
// On desktop NVIDIA resizing QtQuick freezes them when using threaded rendering QTBUG-95817
// In order to support threaded rendering on embedded platforms where resizing is not needed
// we check if XDG_CURRENT_DESKTOP is set which desktop environments should set
if (qstrcmp(vendor, "NVIDIA") == 0 && qEnvironmentVariableIsSet("XDG_CURRENT_DESKTOP")) {
m_supportsThreading = false;
}
}
bool QWaylandEglClientBufferIntegration::isValid() const
{
return m_eglDisplay != EGL_NO_DISPLAY;
}
bool QWaylandEglClientBufferIntegration::supportsThreadedOpenGL() const
{
return m_supportsThreading;
}
bool QWaylandEglClientBufferIntegration::supportsWindowDecoration() const
{
return true;
}
QWaylandWindow *QWaylandEglClientBufferIntegration::createEglWindow(QWindow *window)
{
return new QWaylandEglWindow(window, m_display);
}
QPlatformOpenGLContext *QWaylandEglClientBufferIntegration::createPlatformOpenGLContext(const QSurfaceFormat &glFormat, QPlatformOpenGLContext *share) const
{
QSurfaceFormat fmt = glFormat;
if (m_display->supportsWindowDecoration())
fmt.setAlphaBufferSize(8);
return new QWaylandGLContext(m_eglDisplay, m_display, fmt, share);
}
void *QWaylandEglClientBufferIntegration::nativeResource(NativeResource resource)
{
switch (resource) {
case EglDisplay:
return m_eglDisplay;
default:
break;
}
return nullptr;
}
void *QWaylandEglClientBufferIntegration::nativeResourceForContext(NativeResource resource, QPlatformOpenGLContext *context)
{
Q_ASSERT(context);
switch (resource) {
case EglConfig:
return static_cast<QWaylandGLContext *>(context)->eglConfig();
case EglContext:
return static_cast<QWaylandGLContext *>(context)->eglContext();
case EglDisplay:
return m_eglDisplay;
default:
break;
}
return nullptr;
}
EGLDisplay QWaylandEglClientBufferIntegration::eglDisplay() const
{
return m_eglDisplay;
}
}
QT_END_NAMESPACE
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