diff options
Diffstat (limited to 'src/imports/qtcanvas3d/openglversionchecker.cpp')
-rw-r--r-- | src/imports/qtcanvas3d/openglversionchecker.cpp | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/src/imports/qtcanvas3d/openglversionchecker.cpp b/src/imports/qtcanvas3d/openglversionchecker.cpp new file mode 100644 index 0000000..f7f3d69 --- /dev/null +++ b/src/imports/qtcanvas3d/openglversionchecker.cpp @@ -0,0 +1,89 @@ +/**************************************************************************** +** +** Copyright (C) 2016 The Qt Company Ltd. +** Contact: http://www.qt.io/licensing/ +** +** This file is part of the QtCanvas3D module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL3$ +** 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 http://www.qt.io/terms-conditions. For further +** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free +** Software Foundation and appearing in the file LICENSE.GPL included in +** the packaging of this file. Please review the following information to +** ensure the GNU General Public License version 2.0 requirements will be +** met: http://www.gnu.org/licenses/gpl-2.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include "openglversionchecker_p.h" +#include "canvas3d_p.h" +#include <QtGui/QOpenGLContext> +#include <QtGui/QOpenGLFunctions> +#include <QtGui/QOffscreenSurface> + +QT_BEGIN_NAMESPACE +QT_CANVAS3D_BEGIN_NAMESPACE + +OpenGLVersionChecker::OpenGLVersionChecker() : + m_softwareRenderer(false) +{ + QOpenGLContext *context = QOpenGLContext::currentContext(); + QOffscreenSurface *surface = 0; + bool createdContext = false; + if (!context) { + context = new QOpenGLContext; + createdContext = context->create(); + if (!createdContext) { + qCWarning(canvas3drendering, + "%s Warning: Couldn't resolve context for version checking.", __FUNCTION__); + delete context; + return; + } else { + surface = new QOffscreenSurface(); + surface->setFormat(context->format()); + surface->create(); + context->makeCurrent(surface); + } + } + + const GLubyte *glVersion = context->functions()->glGetString(GL_VERSION); + qCDebug(canvas3drendering, "%s OpenGL version: %s", __FUNCTION__, (const char*)glVersion); + + const GLubyte *glslVersion = context->functions()->glGetString(GL_SHADING_LANGUAGE_VERSION); + qCDebug(canvas3drendering, "%s GLSL version: %s", __FUNCTION__, (const char*)glslVersion); + + qCDebug(canvas3drendering) << __FUNCTION__ << "EXTENSIONS: " << context->extensions(); + + QString versionStr = QString::fromLatin1((const char *)glVersion).toLower(); + if (versionStr.contains(QStringLiteral("mesa")) + || versionStr.contains(QStringLiteral("llvmpipe"))) { + m_softwareRenderer = true; + } + if (createdContext) { + context->doneCurrent(); + delete context; + delete surface; + } +} + +QT_CANVAS3D_END_NAMESPACE +QT_END_NAMESPACE |