--- /dev/null
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the test suite of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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, Nokia gives you certain additional
+** rights. These rights are described in the Nokia 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#include <QtGui/private/qopenglcontext_p.h>
+#include <QtGui/QWindow>
+
+#include <QtTest/QtTest>
+
+class tst_QOpenGL : public QObject
+{
+Q_OBJECT
+
+private slots:
+ void sharedResourceCleanup();
+ void fboSimpleRendering();
+ void fboRendering();
+};
+
+struct SharedResourceTracker
+{
+ SharedResourceTracker()
+ {
+ reset();
+ }
+
+ void reset()
+ {
+ invalidateResourceCalls = 0;
+ freeResourceCalls = 0;
+ destructorCalls = 0;
+ }
+
+ int invalidateResourceCalls;
+ int freeResourceCalls;
+ int destructorCalls;
+};
+
+struct SharedResource : public QOpenGLSharedResource
+{
+ SharedResource(SharedResourceTracker *t)
+ : QOpenGLSharedResource(QOpenGLContextGroup::currentContextGroup())
+ , resource(1)
+ , tracker(t)
+ {
+ }
+
+ ~SharedResource()
+ {
+ tracker->destructorCalls++;
+ }
+
+ void invalidateResource()
+ {
+ resource = 0;
+ tracker->invalidateResourceCalls++;
+ }
+
+ void freeResource(QOpenGLContext *context)
+ {
+ Q_ASSERT(context == QOpenGLContext::currentContext());
+ resource = 0;
+ tracker->freeResourceCalls++;
+ }
+
+ int resource;
+ SharedResourceTracker *tracker;
+};
+
+void tst_QOpenGL::sharedResourceCleanup()
+{
+ QWindow window;
+ window.setGeometry(0, 0, 10, 10);
+ window.create();
+
+ QOpenGLContext *ctx = new QOpenGLContext;
+ ctx->create();
+ ctx->makeCurrent(&window);
+
+ SharedResourceTracker tracker;
+ SharedResource *resource = new SharedResource(&tracker);
+ resource->free();
+
+ QCOMPARE(tracker.invalidateResourceCalls, 0);
+ QCOMPARE(tracker.freeResourceCalls, 1);
+ QCOMPARE(tracker.destructorCalls, 1);
+
+ tracker.reset();
+
+ resource = new SharedResource(&tracker);
+
+ QOpenGLContext *ctx2 = new QOpenGLContext;
+ ctx2->setShareContext(ctx);
+ ctx2->create();
+ delete ctx;
+
+ resource->free();
+
+ // no current context, freeResource() delayed
+ QCOMPARE(tracker.invalidateResourceCalls, 0);
+ QCOMPARE(tracker.freeResourceCalls, 0);
+ QCOMPARE(tracker.destructorCalls, 0);
+
+ ctx2->makeCurrent(&window);
+
+ // freeResource() should now have been called
+ QCOMPARE(tracker.invalidateResourceCalls, 0);
+ QCOMPARE(tracker.freeResourceCalls, 1);
+ QCOMPARE(tracker.destructorCalls, 1);
+
+ delete ctx2;
+}
+
+static bool fuzzyComparePixels(const QRgb testPixel, const QRgb refPixel, const char* file, int line, int x = -1, int y = -1)
+{
+ static int maxFuzz = 1;
+ static bool maxFuzzSet = false;
+
+ // On 16 bpp systems, we need to allow for more fuzz:
+ if (!maxFuzzSet) {
+ maxFuzzSet = true;
+ if (QGuiApplication::primaryScreen()->depth() < 24)
+ maxFuzz = 32;
+ }
+
+ int redFuzz = qAbs(qRed(testPixel) - qRed(refPixel));
+ int greenFuzz = qAbs(qGreen(testPixel) - qGreen(refPixel));
+ int blueFuzz = qAbs(qBlue(testPixel) - qBlue(refPixel));
+ int alphaFuzz = qAbs(qAlpha(testPixel) - qAlpha(refPixel));
+
+ if (refPixel != 0 && testPixel == 0) {
+ QString msg;
+ if (x >= 0) {
+ msg = QString("Test pixel [%1, %2] is null (black) when it should be (%3,%4,%5,%6)")
+ .arg(x).arg(y)
+ .arg(qRed(refPixel)).arg(qGreen(refPixel)).arg(qBlue(refPixel)).arg(qAlpha(refPixel));
+ } else {
+ msg = QString("Test pixel is null (black) when it should be (%2,%3,%4,%5)")
+ .arg(qRed(refPixel)).arg(qGreen(refPixel)).arg(qBlue(refPixel)).arg(qAlpha(refPixel));
+ }
+
+ QTest::qFail(msg.toLatin1(), file, line);
+ return false;
+ }
+
+ if (redFuzz > maxFuzz || greenFuzz > maxFuzz || blueFuzz > maxFuzz || alphaFuzz > maxFuzz) {
+ QString msg;
+
+ if (x >= 0)
+ msg = QString("Pixel [%1,%2]: ").arg(x).arg(y);
+ else
+ msg = QString("Pixel ");
+
+ msg += QString("Max fuzz (%1) exceeded: (%2,%3,%4,%5) vs (%6,%7,%8,%9)")
+ .arg(maxFuzz)
+ .arg(qRed(testPixel)).arg(qGreen(testPixel)).arg(qBlue(testPixel)).arg(qAlpha(testPixel))
+ .arg(qRed(refPixel)).arg(qGreen(refPixel)).arg(qBlue(refPixel)).arg(qAlpha(refPixel));
+ QTest::qFail(msg.toLatin1(), file, line);
+ return false;
+ }
+ return true;
+}
+
+static void fuzzyCompareImages(const QImage &testImage, const QImage &referenceImage, const char* file, int line)
+{
+ QCOMPARE(testImage.width(), referenceImage.width());
+ QCOMPARE(testImage.height(), referenceImage.height());
+
+ for (int y = 0; y < testImage.height(); y++) {
+ for (int x = 0; x < testImage.width(); x++) {
+ if (!fuzzyComparePixels(testImage.pixel(x, y), referenceImage.pixel(x, y), file, line, x, y)) {
+ // Might as well save the images for easier debugging:
+ referenceImage.save("referenceImage.png");
+ testImage.save("testImage.png");
+ return;
+ }
+ }
+ }
+}
+
+#define QFUZZY_COMPARE_IMAGES(A,B) \
+ fuzzyCompareImages(A, B, __FILE__, __LINE__)
+
+#define QFUZZY_COMPARE_PIXELS(A,B) \
+ fuzzyComparePixels(A, B, __FILE__, __LINE__)
+
+void qt_opengl_draw_test_pattern(QPainter* painter, int width, int height)
+{
+ QPainterPath intersectingPath;
+ intersectingPath.moveTo(0, 0);
+ intersectingPath.lineTo(100, 0);
+ intersectingPath.lineTo(0, 100);
+ intersectingPath.lineTo(100, 100);
+ intersectingPath.closeSubpath();
+
+ QPainterPath trianglePath;
+ trianglePath.moveTo(50, 0);
+ trianglePath.lineTo(100, 100);
+ trianglePath.lineTo(0, 100);
+ trianglePath.closeSubpath();
+
+ painter->setTransform(QTransform()); // reset xform
+ painter->fillRect(-1, -1, width+2, height+2, Qt::red); // Background
+ painter->translate(14, 14);
+ painter->fillPath(intersectingPath, Qt::blue); // Test stencil buffer works
+ painter->translate(128, 0);
+ painter->setClipPath(trianglePath); // Test depth buffer works
+ painter->setTransform(QTransform()); // reset xform ready for fill
+ painter->fillRect(-1, -1, width+2, height+2, Qt::green);
+}
+
+void qt_opengl_check_test_pattern(const QImage& img)
+{
+ // As we're doing more than trivial painting, we can't just compare to
+ // an image rendered with raster. Instead, we sample at well-defined
+ // test-points:
+ QFUZZY_COMPARE_PIXELS(img.pixel(39, 64), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(img.pixel(89, 64), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(img.pixel(64, 39), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(img.pixel(64, 89), QColor(Qt::blue).rgb());
+
+ QFUZZY_COMPARE_PIXELS(img.pixel(167, 39), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(img.pixel(217, 39), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(img.pixel(192, 64), QColor(Qt::green).rgb());
+}
+
+
+void tst_QOpenGL::fboSimpleRendering()
+{
+ QWindow window;
+ window.setGeometry(0, 0, 10, 10);
+ window.create();
+ QOpenGLContext ctx;
+ ctx.create();
+
+ ctx.makeCurrent(&window);
+
+ if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
+ QSKIP("QOpenGLFramebufferObject not supported on this platform", SkipSingle);
+
+ // No multisample with combined depth/stencil attachment:
+ QOpenGLFramebufferObjectFormat fboFormat;
+ fboFormat.setAttachment(QOpenGLFramebufferObject::NoAttachment);
+
+ QOpenGLFramebufferObject *fbo = new QOpenGLFramebufferObject(200, 100, fboFormat);
+
+ fbo->bind();
+
+ glClearColor(1.0, 0.0, 0.0, 1.0);
+ glClear(GL_COLOR_BUFFER_BIT);
+ glFinish();
+
+ QImage fb = fbo->toImage().convertToFormat(QImage::Format_RGB32);
+ QImage reference(fb.size(), QImage::Format_RGB32);
+ reference.fill(0xffff0000);
+
+ QFUZZY_COMPARE_IMAGES(fb, reference);
+
+ delete fbo;
+}
+
+// NOTE: This tests that CombinedDepthStencil attachment works by assuming the
+// GL2 engine is being used and is implemented the same way as it was when
+// this autotest was written. If this is not the case, there may be some
+// false-positives: I.e. The test passes when either the depth or stencil
+// buffer is actually missing. But that's probably ok anyway.
+void tst_QOpenGL::fboRendering()
+{
+ QWindow window;
+ window.setGeometry(0, 0, 10, 10);
+ window.create();
+ QOpenGLContext ctx;
+ ctx.create();
+
+ ctx.makeCurrent(&window);
+
+ if (!QOpenGLFramebufferObject::hasOpenGLFramebufferObjects())
+ QSKIP("QOpenGLFramebufferObject not supported on this platform", SkipSingle);
+
+ // No multisample with combined depth/stencil attachment:
+ QOpenGLFramebufferObjectFormat fboFormat;
+ fboFormat.setAttachment(QOpenGLFramebufferObject::CombinedDepthStencil);
+
+ // Uncomplicate things by using NPOT:
+ QOpenGLFramebufferObject *fbo = new QOpenGLFramebufferObject(256, 128, fboFormat);
+
+ if (fbo->attachment() != QOpenGLFramebufferObject::CombinedDepthStencil) {
+ delete fbo;
+ QSKIP("FBOs missing combined depth~stencil support", SkipSingle);
+ }
+
+ QPainter fboPainter;
+ bool painterBegun = fboPainter.begin(fbo);
+ QVERIFY(painterBegun);
+
+ qt_opengl_draw_test_pattern(&fboPainter, fbo->width(), fbo->height());
+
+ fboPainter.end();
+
+ QImage fb = fbo->toImage().convertToFormat(QImage::Format_RGB32);
+ delete fbo;
+
+ qt_opengl_check_test_pattern(fb);
+}
+
+QTEST_MAIN(tst_QOpenGL)
+#include "tst_qopengl.moc"
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