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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 "qeglfsglobal_p.h"
#include <QtGui/QSurface>
#include <QtGui/private/qeglconvenience_p.h>
#include <QtGui/private/qeglpbuffer_p.h>
#include "qeglfscontext_p.h"
#include "qeglfswindow_p.h"
#include "qeglfshooks_p.h"
#include "qeglfscursor_p.h"
QT_BEGIN_NAMESPACE
QEglFSContext::QEglFSContext(const QSurfaceFormat &format, QPlatformOpenGLContext *share, EGLDisplay display,
EGLConfig *config)
: QEGLPlatformContext(format, share, display, config,
qt_egl_device_integration()->supportsSurfacelessContexts() ? Flags() : QEGLPlatformContext::NoSurfaceless)
{
}
EGLSurface QEglFSContext::eglSurfaceForPlatformSurface(QPlatformSurface *surface)
{
if (surface->surface()->surfaceClass() == QSurface::Window) {
QEglFSWindow *w = static_cast<QEglFSWindow *>(surface);
EGLSurface s = w->surface();
if (s == EGL_NO_SURFACE) {
w->resetSurface();
s = w->surface();
}
return s;
} else {
return static_cast<QEGLPbuffer *>(surface)->pbuffer();
}
}
EGLSurface QEglFSContext::createTemporaryOffscreenSurface()
{
if (qt_egl_device_integration()->supportsPBuffers())
return QEGLPlatformContext::createTemporaryOffscreenSurface();
if (!m_tempWindow) {
m_tempWindow = qt_egl_device_integration()->createNativeOffscreenWindow(format());
if (!m_tempWindow) {
qWarning("QEglFSContext: Failed to create temporary native window");
return EGL_NO_SURFACE;
}
}
EGLConfig config = q_configFromGLFormat(eglDisplay(), format());
return eglCreateWindowSurface(eglDisplay(), config, m_tempWindow, nullptr);
}
void QEglFSContext::destroyTemporaryOffscreenSurface(EGLSurface surface)
{
if (qt_egl_device_integration()->supportsPBuffers()) {
QEGLPlatformContext::destroyTemporaryOffscreenSurface(surface);
} else {
eglDestroySurface(eglDisplay(), surface);
qt_egl_device_integration()->destroyNativeWindow(m_tempWindow);
m_tempWindow = 0;
}
}
void QEglFSContext::runGLChecks()
{
// Note that even though there is an EGL context current here,
// QOpenGLContext and QOpenGLFunctions are not yet usable at this stage.
const char *renderer = reinterpret_cast<const char *>(glGetString(GL_RENDERER));
// Be nice and warn about a common source of confusion.
if (renderer && strstr(renderer, "llvmpipe"))
qWarning("Running on a software rasterizer (LLVMpipe), expect limited performance.");
}
void QEglFSContext::swapBuffers(QPlatformSurface *surface)
{
// draw the cursor
if (surface->surface()->surfaceClass() == QSurface::Window) {
QPlatformWindow *window = static_cast<QPlatformWindow *>(surface);
if (QEglFSCursor *cursor = qobject_cast<QEglFSCursor *>(window->screen()->cursor()))
cursor->paintOnScreen();
}
qt_egl_device_integration()->waitForVSync(surface);
QEGLPlatformContext::swapBuffers(surface);
qt_egl_device_integration()->presentBuffer(surface);
}
QT_END_NAMESPACE
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