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
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+++ 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