qt5base-lts/util/glgen/qopenglversionfunctions__VERSION__.cpp.header

// Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB)
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
/***************************************************************************
** This file was generated by glgen version 0.1
** Command line was: glgen
**
** glgen is Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB)
**
** This is an auto-generated file.
** Do not edit! All changes made to it will be lost.
**
****************************************************************************/

#include "qopenglfunctions__VERSION__.h"
#include "qopenglcontext.h"

QT_BEGIN_NAMESPACE
Use SPDX license identifiers Replace the current license disclaimer in files by a SPDX-License-Identifier. Files that have to be modified by hand are modified. License files are organized under LICENSES directory. Task-number: QTBUG-67283 Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1 Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org> Reviewed-by: Lars Knoll <lars.knoll@qt.io> Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io> 2022-05-10 10:06:48 +00:00			`// Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB)`
			`// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0`
			`/***************************************************************************`
OpenGL: Add code generator for OpenGL enabler classes This patch provides a code generator that can be executed offline to generate a few classes for enhancing Qt's support for OpenGL. The generated code effectively provides all the benefits of GLEW in its multi-context form but for all platforms and even for ES2. The code generator takes as input the official Khronos gl.spec specification and gl.tm typemap files. These provide all of the information required to create the OpenGL Desktop related classes. The classes for ES2 are hand-crafted as no similar spec files have been published. The generated code supports all OpenGL extensions listed in the Khronos registry for both Desktop OpenGL and ES 2. There is a helper factory class generated which are used by QOpenGLContext::versionFunctions(). This allows code like the following to be written: QOpenGLFunctions_3_3_Core* m_funcs = 0; m_funcs = m_context->versionFunctions<QOpenGLFunctions_3_3_Core>(); if (!m_funcs) { qWarning() << "Could not obtain required OpenGL context version"; exit(1); } if (!m_funcs->initializeOpenGLFunctions()) { qWarning() << "Failed to resolve entry points"; exit(2); } // Get an extension object QOpenGLExtension_ARB_draw_buffers* ext = 0; if (m_context->hasExtension("GL_ARB_draw_buffers")) { ext = new QOpenGLExtension_ARB_draw_buffers(); ext->initializeOpenGLFunctions(m_context); } Such usage will allow much easier and rigorous use of features in modern OpenGL and extensions both in Qt itself and by users of Qt. Follow-up patches will import the generated files and then use these to reinstate OpenGL geometry shaders, add tessellation shaders, and other OpenGL constructs. Change-Id: Id0172e8aa1fd57eb4e6979a96d10fb5a34826426 Reviewed-by: Samuel Rødal <samuel.rodal@digia.com> Reviewed-by: James Turner <james.turner@kdab.com> 2012-08-08 15:43:48 +00:00			`** This file was generated by glgen version 0.1`
			`** Command line was: glgen`
			`**`
			`** glgen is Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB)`
			`**`
			`** This is an auto-generated file.`
			`** Do not edit! All changes made to it will be lost.`
			`**`
			`****************************************************************************/`

			`#include "qopenglfunctions__VERSION__.h"`
			`#include "qopenglcontext.h"`

			`QT_BEGIN_NAMESPACE`