Move versioned OpenGL functions from QtGui to QtOpenGL

The context—which lives in QtGui—now knows nothing about versioned functions.

This changes the public API for getting version functions for a context.

[ChangeLog][QtGui][OpenGL] QOpenGLContext::versionFunctions() has been removed.
QOpenGLVersionFunctionsFactory::get() from the QtOpenGL module should be used
instead.

Previously one would call

    context->versionFunctions<QOpenGLFunctions_4_0_Core>();

Which now becomes

    QOpenGLVersionFunctionsFactory::get<QOpenGLFunctions_4_0_Core>(context);

The rest of the API should be identical.

Since glgen no longer compiles, and the links to its input (gl.spec and gl.tm)
are dead, I've edited the previously generated files manually. If glgen is
fixed, it should be quite easy to make it generate the new way.

Task-number: QTBUG-74409
Change-Id: I800527e0af16a79005b276eeb74417770193c62f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Laszlo Agocs <laszlo.agocs@qt.io>

1 files changed, 59 insertions, 0 deletions

diff --git a/src/opengl/doc/src/dontdocument.qdoc b/src/opengl/doc/src/dontdocument.qdoc
new file mode 100644
index 0000000000..72e997d933
--- /dev/null
+++ b/src/opengl/doc/src/dontdocument.qdoc
@@ -0,0 +1,59 @@
+/****************************************************************************
+**
+** Copyright (C) 2019 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** Commercial License Usage
+** Licensees holding valid commercial Qt licenses may use this file in
+** accordance with the commercial license agreement provided with the
+** Software or, alternatively, in accordance with the terms contained in
+** a written agreement between you and The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/contact-us.
+**
+** GNU Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+  \dontdocument (QOpenGLVersionStatus
+                 QOpenGLVersionFunctionsBackend
+                 QOpenGLVersionFunctionsStorage
+                 QOpenGLFunctions_1_0_CoreBackend
+                 QOpenGLFunctions_1_1_CoreBackend
+                 QOpenGLFunctions_1_2_CoreBackend
+                 QOpenGLFunctions_1_3_CoreBackend
+                 QOpenGLFunctions_1_4_CoreBackend
+                 QOpenGLFunctions_1_5_CoreBackend
+                 QOpenGLFunctions_2_0_CoreBackend
+                 QOpenGLFunctions_2_1_CoreBackend
+                 QOpenGLFunctions_3_0_CoreBackend
+                 QOpenGLFunctions_3_1_CoreBackend
+                 QOpenGLFunctions_3_2_CoreBackend
+                 QOpenGLFunctions_3_3_CoreBackend
+                 QOpenGLFunctions_4_0_CoreBackend
+                 QOpenGLFunctions_4_1_CoreBackend
+                 QOpenGLFunctions_4_2_CoreBackend
+                 QOpenGLFunctions_4_3_CoreBackend
+                 QOpenGLFunctions_4_4_CoreBackend
+                 QOpenGLFunctions_4_5_CoreBackend
+                 QOpenGLFunctions_1_0_DeprecatedBackend
+                 QOpenGLFunctions_1_1_DeprecatedBackend
+                 QOpenGLFunctions_1_2_DeprecatedBackend
+                 QOpenGLFunctions_1_3_DeprecatedBackend
+                 QOpenGLFunctions_1_4_DeprecatedBackend
+                 QOpenGLFunctions_2_0_DeprecatedBackend
+                 QOpenGLFunctions_3_0_DeprecatedBackend
+                 QOpenGLFunctions_3_3_DeprecatedBackend
+                 QOpenGLFunctions_4_5_DeprecatedBackend)
+*/