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/****************************************************************************
**
** Copyright (C) 2012 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 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 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include <QtTest/QtTest>
#include <QtOpenGL/qglfunctions.h>
class tst_QGLFunctions : public QObject
{
Q_OBJECT
public:
tst_QGLFunctions() {}
~tst_QGLFunctions() {}
private slots:
void features();
void multitexture();
void blendColor();
private:
static bool hasExtension(const char *name);
};
bool tst_QGLFunctions::hasExtension(const char *name)
{
QString extensions =
QString::fromLatin1
(reinterpret_cast<const char *>(glGetString(GL_EXTENSIONS)));
return extensions.split(QLatin1Char(' ')).contains
(QString::fromLatin1(name));
}
// Check that the reported features are consistent with the platform.
void tst_QGLFunctions::features()
{
// Before being associated with a context, there should be
// no features enabled.
QGLFunctions funcs;
QVERIFY(!funcs.openGLFeatures());
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::Multitexture));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::Shaders));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::Buffers));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::Framebuffers));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::BlendColor));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::BlendEquation));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::BlendEquationSeparate));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::BlendFuncSeparate));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::BlendSubtract));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::CompressedTextures));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::Multisample));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::StencilSeparate));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::NPOTTextures));
// Make a context current.
QGLWidget glw;
if (!glw.isValid())
QSKIP("Could not create a GL context", SkipAll);
glw.makeCurrent();
funcs.initializeGLFunctions();
// Validate the features against what we expect for this platform.
#if defined(QT_OPENGL_ES_2)
QGLFunctions::OpenGLFeatures allFeatures =
(QGLFunctions::Multitexture |
QGLFunctions::Shaders |
QGLFunctions::Buffers |
QGLFunctions::Framebuffers |
QGLFunctions::BlendColor |
QGLFunctions::BlendEquation |
QGLFunctions::BlendEquationSeparate |
QGLFunctions::BlendFuncSeparate |
QGLFunctions::BlendSubtract |
QGLFunctions::CompressedTextures |
QGLFunctions::Multisample |
QGLFunctions::StencilSeparate |
QGLFunctions::NPOTTextures);
QVERIFY((funcs.openGLFeatures() & allFeatures) == allFeatures);
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::Multitexture));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::Shaders));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::Buffers));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::Framebuffers));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::BlendColor));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::BlendEquation));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::BlendEquationSeparate));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::BlendFuncSeparate));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::BlendSubtract));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::CompressedTextures));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::Multisample));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::StencilSeparate));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::NPOTTextures));
#elif defined(QT_OPENGL_ES)
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::Multitexture));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::Buffers));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::CompressedTextures));
QVERIFY(funcs.hasOpenGLFeature(QGLFunctions::Multisample));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::Shaders));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::BlendColor));
QVERIFY(!funcs.hasOpenGLFeature(QGLFunctions::StencilSeparate));
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::Framebuffers),
hasExtension("GL_OES_framebuffer_object"));
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::BlendEquationSeparate),
hasExtension("GL_OES_blend_equation_separate"));
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::BlendFuncSeparate),
hasExtension("GL_OES_blend_func_separate"));
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::BlendSubtract),
hasExtension("GL_OES_blend_subtract"));
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::NPOTTextures),
hasExtension("GL_OES_texture_npot"));
#else
// We check for both the extension name and the minimum OpenGL version
// for the feature. This will help us catch situations where a platform
// doesn't list an extension by name but does have the feature by virtue
// of its version number.
QGLFormat::OpenGLVersionFlags versions = QGLFormat::openGLVersionFlags();
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::Multitexture),
hasExtension("GL_ARB_multitexture") ||
(versions & QGLFormat::OpenGL_Version_1_3) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::Shaders),
hasExtension("GL_ARB_shader_objects") ||
(versions & QGLFormat::OpenGL_Version_2_0) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::Buffers),
(versions & QGLFormat::OpenGL_Version_1_5) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::Framebuffers),
hasExtension("GL_EXT_framebuffer_object") ||
hasExtension("GL_ARB_framebuffer_object"));
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::BlendColor),
hasExtension("GL_EXT_blend_color") ||
(versions & QGLFormat::OpenGL_Version_1_2) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::BlendEquation),
(versions & QGLFormat::OpenGL_Version_1_2) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::BlendEquationSeparate),
hasExtension("GL_EXT_blend_equation_separate") ||
(versions & QGLFormat::OpenGL_Version_2_0) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::BlendFuncSeparate),
hasExtension("GL_EXT_blend_func_separate") ||
(versions & QGLFormat::OpenGL_Version_1_4) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::BlendSubtract),
hasExtension("GL_EXT_blend_subtract"));
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::CompressedTextures),
hasExtension("GL_ARB_texture_compression") ||
(versions & QGLFormat::OpenGL_Version_1_3) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::Multisample),
hasExtension("GL_ARB_multisample") ||
(versions & QGLFormat::OpenGL_Version_1_3) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::StencilSeparate),
(versions & QGLFormat::OpenGL_Version_2_0) != 0);
QCOMPARE(funcs.hasOpenGLFeature(QGLFunctions::NPOTTextures),
hasExtension("GL_ARB_texture_non_power_of_two") ||
(versions & QGLFormat::OpenGL_Version_2_0) != 0);
#endif
}
// Verify that the multitexture functions appear to resolve and work.
void tst_QGLFunctions::multitexture()
{
QGLFunctions funcs;
QGLWidget glw;
if (!glw.isValid())
QSKIP("Could not create a GL context", SkipAll);
glw.makeCurrent();
funcs.initializeGLFunctions();
if (!funcs.hasOpenGLFeature(QGLFunctions::Multitexture))
QSKIP("Multitexture functions are not supported", SkipSingle);
funcs.glActiveTexture(GL_TEXTURE1);
GLint active = 0;
glGetIntegerv(GL_ACTIVE_TEXTURE, &active);
QVERIFY(active == GL_TEXTURE1);
funcs.glActiveTexture(GL_TEXTURE0);
active = 0;
glGetIntegerv(GL_ACTIVE_TEXTURE, &active);
QVERIFY(active == GL_TEXTURE0);
}
// Verify that the glBlendColor() function appears to resolve and work.
void tst_QGLFunctions::blendColor()
{
QGLFunctions funcs;
QGLWidget glw;
if (!glw.isValid())
QSKIP("Could not create a GL context", SkipAll);
glw.makeCurrent();
funcs.initializeGLFunctions();
if (!funcs.hasOpenGLFeature(QGLFunctions::BlendColor))
QSKIP("glBlendColor() is not supported", SkipSingle);
funcs.glBlendColor(0.0f, 1.0f, 0.0f, 1.0f);
GLfloat colors[4] = {0.5f, 0.5f, 0.5f, 0.5f};
glGetFloatv(GL_BLEND_COLOR, colors);
QCOMPARE(colors[0], 0.0f);
QCOMPARE(colors[1], 1.0f);
QCOMPARE(colors[2], 0.0f);
QCOMPARE(colors[3], 1.0f);
}
QTEST_MAIN(tst_QGLFunctions)
#include "tst_qglfunctions.moc"
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