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Diffstat (limited to 'src/opengl/qopenglversionfunctionsfactory.cpp')
| -rw-r--r-- | src/opengl/qopenglversionfunctionsfactory.cpp | 280 |
1 files changed, 280 insertions, 0 deletions
diff --git a/src/opengl/qopenglversionfunctionsfactory.cpp b/src/opengl/qopenglversionfunctionsfactory.cpp new file mode 100644 index 0000000000..d377c64961 --- /dev/null +++ b/src/opengl/qopenglversionfunctionsfactory.cpp @@ -0,0 +1,280 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB) +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtOpenGL module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +** +** 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 "qopenglversionfunctionsfactory.h" +#include "qopenglversionfunctions_p.h" + +#if !QT_CONFIG(opengles2) +#include "qopenglfunctions_4_5_core.h" +#include "qopenglfunctions_4_5_compatibility.h" +#include "qopenglfunctions_4_4_core.h" +#include "qopenglfunctions_4_4_compatibility.h" +#include "qopenglfunctions_4_3_core.h" +#include "qopenglfunctions_4_3_compatibility.h" +#include "qopenglfunctions_4_2_core.h" +#include "qopenglfunctions_4_2_compatibility.h" +#include "qopenglfunctions_4_1_core.h" +#include "qopenglfunctions_4_1_compatibility.h" +#include "qopenglfunctions_4_0_core.h" +#include "qopenglfunctions_4_0_compatibility.h" +#include "qopenglfunctions_3_3_core.h" +#include "qopenglfunctions_3_3_compatibility.h" +#include "qopenglfunctions_3_2_core.h" +#include "qopenglfunctions_3_2_compatibility.h" +#include "qopenglfunctions_3_1.h" +#include "qopenglfunctions_3_0.h" +#include "qopenglfunctions_2_1.h" +#include "qopenglfunctions_2_0.h" +#include "qopenglfunctions_1_5.h" +#include "qopenglfunctions_1_4.h" +#include "qopenglfunctions_1_3.h" +#include "qopenglfunctions_1_2.h" +#include "qopenglfunctions_1_1.h" +#include "qopenglfunctions_1_0.h" +#else +#include "qopenglfunctions_es2.h" +#endif + +QT_BEGIN_NAMESPACE + +static QAbstractOpenGLFunctions *createFunctions(const QOpenGLVersionProfile &versionProfile) +{ +#if !QT_CONFIG(opengles2) + const int major = versionProfile.version().first; + const int minor = versionProfile.version().second; + + if (versionProfile.hasProfiles()) { + switch (versionProfile.profile()) { + case QSurfaceFormat::CoreProfile: + if (major == 4 && minor == 5) + return new QOpenGLFunctions_4_5_Core; + else if (major == 4 && minor == 4) + return new QOpenGLFunctions_4_4_Core; + else if (major == 4 && minor == 3) + return new QOpenGLFunctions_4_3_Core; + else if (major == 4 && minor == 2) + return new QOpenGLFunctions_4_2_Core; + else if (major == 4 && minor == 1) + return new QOpenGLFunctions_4_1_Core; + else if (major == 4 && minor == 0) + return new QOpenGLFunctions_4_0_Core; + else if (major == 3 && minor == 3) + return new QOpenGLFunctions_3_3_Core; + else if (major == 3 && minor == 2) + return new QOpenGLFunctions_3_2_Core; + break; + + case QSurfaceFormat::CompatibilityProfile: + if (major == 4 && minor == 5) + return new QOpenGLFunctions_4_5_Compatibility; + else if (major == 4 && minor == 4) + return new QOpenGLFunctions_4_4_Compatibility; + else if (major == 4 && minor == 3) + return new QOpenGLFunctions_4_3_Compatibility; + else if (major == 4 && minor == 2) + return new QOpenGLFunctions_4_2_Compatibility; + else if (major == 4 && minor == 1) + return new QOpenGLFunctions_4_1_Compatibility; + else if (major == 4 && minor == 0) + return new QOpenGLFunctions_4_0_Compatibility; + else if (major == 3 && minor == 3) + return new QOpenGLFunctions_3_3_Compatibility; + else if (major == 3 && minor == 2) + return new QOpenGLFunctions_3_2_Compatibility; + break; + + case QSurfaceFormat::NoProfile: + default: + break; + }; + } else { + if (major == 3 && minor == 1) + return new QOpenGLFunctions_3_1; + else if (major == 3 && minor == 0) + return new QOpenGLFunctions_3_0; + else if (major == 2 && minor == 1) + return new QOpenGLFunctions_2_1; + else if (major == 2 && minor == 0) + return new QOpenGLFunctions_2_0; + else if (major == 1 && minor == 5) + return new QOpenGLFunctions_1_5; + else if (major == 1 && minor == 4) + return new QOpenGLFunctions_1_4; + else if (major == 1 && minor == 3) + return new QOpenGLFunctions_1_3; + else if (major == 1 && minor == 2) + return new QOpenGLFunctions_1_2; + else if (major == 1 && minor == 1) + return new QOpenGLFunctions_1_1; + else if (major == 1 && minor == 0) + return new QOpenGLFunctions_1_0; + } + return nullptr; +#else + Q_UNUSED(versionProfile); + return new QOpenGLFunctions_ES2; +#endif +} + +/*! + \fn static T *QOpenGLVersionFunctionsFactory::get(QOpenGLContext *context) + + \overload get() + + Returns a pointer to an object that provides access to all functions for + the version and profile of this context. There is no need to call + QAbstractOpenGLFunctions::initializeOpenGLFunctions() as long as the \a context + is current. It is also possible to call this function when the \a context is not + current, but in that case it is the caller's responsibility to ensure proper + initialization by calling QAbstractOpenGLFunctions::initializeOpenGLFunctions() + afterwards. + + Usually one would use the template version of this function to automatically + have the result cast to the correct type. + + \code + auto funcs = QOpenGLVersionFunctionsFactory::get<QOpenGLFunctions_3_3_Core>(context); + if (!funcs) { + qFatal("Could not obtain required OpenGL context version"); + } + \endcode + + It is possible to request a functions object for a different version and profile + than that for which the context was created. To do this either use the template + version of this function specifying the desired functions object type as the + template parameter or by passing in a QOpenGLVersionProfile object as an argument + to the non-template function. + + Note that requests for function objects of other versions or profiles can fail and + in doing so will return \nullptr. Situations in which creation of the functions + object can fail are if the request cannot be satisfied due to asking for functions + that are not in the version or profile of this context. For example: + + \list + \li Requesting a 3.3 core profile functions object would succeed. + \li Requesting a 3.3 compatibility profile functions object would fail. We would fail + to resolve the deprecated functions. + \li Requesting a 4.3 core profile functions object would fail. We would fail to resolve + the new core functions introduced in versions 4.0-4.3. + \li Requesting a 3.1 functions object would succeed. There is nothing in 3.1 that is not + also in 3.3 core. + \endlist + + Note that if creating a functions object via this method that the QOpenGLContext + retains ownership of the object. This is to allow the object to be cached and shared. +*/ + +/*! + Returns a pointer to an object that provides access to all functions for the + \a versionProfile of the \a context. There is no need to call + QAbstractOpenGLFunctions::initializeOpenGLFunctions() as long as the \a context + is current. It is also possible to call this function when the \a context is not + current, but in that case it is the caller's responsibility to ensure proper + initialization by calling QAbstractOpenGLFunctions::initializeOpenGLFunctions() + afterwards. + + Usually one would use the template version of this function to automatically + have the result cast to the correct type. +*/ +QAbstractOpenGLFunctions *QOpenGLVersionFunctionsFactory::get(const QOpenGLVersionProfile &versionProfile, QOpenGLContext *context) +{ + if (!context) + context = QOpenGLContext::currentContext(); + + if (!context) { + qWarning("versionFunctions: No OpenGL context"); + return nullptr; + } + +#if !QT_CONFIG(opengles2) + if (context->isOpenGLES()) { + qWarning("versionFunctions: Not supported on OpenGL ES"); + return nullptr; + } +#endif // !QT_CONFIG(opengles2) + + const QSurfaceFormat f = context->format(); + + // Ensure we have a valid version and profile. Default to context's if none specified + QOpenGLVersionProfile vp = versionProfile; + if (!vp.isValid()) + vp = QOpenGLVersionProfile(f); + + // Check that context is compatible with requested version + const QPair<int, int> v = qMakePair(f.majorVersion(), f.minorVersion()); + if (v < vp.version()) + return nullptr; + + // If this context only offers core profile functions then we can't create + // function objects for legacy or compatibility profile requests + if (((vp.hasProfiles() && vp.profile() != QSurfaceFormat::CoreProfile) || vp.isLegacyVersion()) + && f.profile() == QSurfaceFormat::CoreProfile) + return nullptr; + + // Create object if suitable one not cached + QAbstractOpenGLFunctions* funcs = nullptr; + // TODO: replace with something else + auto *data = QOpenGLContextVersionData::forContext(context); + auto it = data->functions.constFind(vp); + if (it == data->functions.constEnd()) { + funcs = createFunctions(vp); + if (funcs) { + funcs->setOwningContext(context); + data->functions.insert(vp, funcs); + } + } else { + funcs = it.value(); + } + + if (funcs && QOpenGLContext::currentContext() == context) + funcs->initializeOpenGLFunctions(); + + return funcs; +} + +QT_END_NAMESPACE |