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#############################################################################
##
## Copyright (C) 2022 The Qt Company Ltd.
## Contact: http://www.qt.io/licensing/
##
## This file is part of the Qt for Python examples of the Qt Toolkit.
##
## $QT_BEGIN_LICENSE:BSD$
## You may use this file under the terms of the BSD license as follows:
##
## "Redistribution and use in source and binary forms, with or without
## modification, are permitted provided that the following conditions are
## met:
## * Redistributions of source code must retain the above copyright
## notice, this list of conditions and the following disclaimer.
## * Redistributions in binary form must reproduce the above copyright
## notice, this list of conditions and the following disclaimer in
## the documentation and/or other materials provided with the
## distribution.
## * Neither the name of The Qt Company Ltd nor the names of its
## contributors may be used to endorse or promote products derived
## from this software without specific prior written permission.
##
##
## THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
## "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
## LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
## A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
## OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
## SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
## LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
## DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
## THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
## (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
## OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
##
## $QT_END_LICENSE$
##
#############################################################################
"""PySide6 port of the Threaded QOpenGLWidget Example from Qt v6.x"""
import sys
from argparse import ArgumentParser, RawTextHelpFormatter
from PySide6.QtWidgets import QApplication, QMessageBox
from PySide6.QtGui import QShortcut, QSurfaceFormat
from PySide6.QtCore import QCoreApplication, QPoint, qVersion, Qt
try:
from OpenGL import GL
except ImportError:
app = QApplication(sys.argv)
message = "PyOpenGL must be installed to run this example."
message_box = QMessageBox(QMessageBox.Critical,
"Threaded QOpenGLWidget Example",
message, QMessageBox.Close)
detail = "Run:\npip install PyOpenGL PyOpenGL_accelerate"
message_box.setDetailedText(detail)
message_box.exec()
sys.exit(1)
from glwidget import GLWidget
from mainwindow import MainWindow
if __name__ == "__main__":
app = QApplication(sys.argv)
desc = "Qt Threaded QOpenGLWidget Example"
parser = ArgumentParser(description=desc,
formatter_class=RawTextHelpFormatter)
parser.add_argument("--single", "-s", action="store_true",
help="Single thread")
options = parser.parse_args()
QCoreApplication.setApplicationName(desc)
QCoreApplication.setOrganizationName("QtProject")
QCoreApplication.setApplicationVersion(qVersion())
format = QSurfaceFormat()
format.setDepthBufferSize(16)
QSurfaceFormat.setDefaultFormat(format)
# Two top-level windows with two QOpenGLWidget children in each. The
# rendering for the four QOpenGLWidgets happens on four separate threads.
top_gl_widget = GLWidget()
pos = top_gl_widget.screen().availableGeometry().topLeft()
pos += QPoint(200, 200)
top_gl_widget.setWindowTitle(desc + " top level")
top_gl_widget.move(pos)
top_gl_widget.show()
functions = top_gl_widget.context().functions()
vendor = functions.glGetString(GL.GL_VENDOR)
renderer = functions.glGetString(GL.GL_RENDERER)
gl_info = f"{vendor}/f{renderer}"
supports_threading = ("nouveau" not in gl_info and "ANGLE" not in gl_info
and "llvmpipe" not in gl_info)
tool_tip = gl_info
if not supports_threading:
tool_tip += "\ndoes not support threaded OpenGL."
top_gl_widget.setToolTip(tool_tip)
print(tool_tip)
close_shortcut = QShortcut(Qt.CTRL | Qt.Key_Q, top_gl_widget)
close_shortcut.activated.connect(QApplication.closeAllWindows)
close_shortcut.setContext(Qt.ApplicationShortcut)
mw1 = None
mw2 = None
if not options.single and supports_threading:
pos += QPoint(100, 100)
mw1 = MainWindow()
mw1.setToolTip(tool_tip)
mw1.move(pos)
mw1.setWindowTitle(f"{desc} #1")
mw1.show()
pos += QPoint(100, 100)
mw2 = MainWindow()
mw2.setToolTip(tool_tip)
mw2.move(pos)
mw2.setWindowTitle(f"{desc} #2")
mw2.show()
sys.exit(app.exec())
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