--- a/tests/auto/qgl/tst_qgl.cpp Tue Jan 26 12:42:25 2010 +0200
+++ b/tests/auto/qgl/tst_qgl.cpp Tue Feb 02 00:43:10 2010 +0200
@@ -75,14 +75,15 @@
void graphicsViewClipping();
void partialGLWidgetUpdates_data();
void partialGLWidgetUpdates();
+ void glWidgetWithAlpha();
void glWidgetRendering();
+ void glFBOSimpleRendering();
void glFBORendering();
void multipleFBOInterleavedRendering();
void glFBOUseInGLWidget();
void glPBufferRendering();
void glWidgetReparent();
void glWidgetRenderPixmap();
- void stackedFBOs();
void colormap();
void fboFormat();
void testDontCrashOnDanglingResources();
@@ -118,6 +119,16 @@
void setAutoBufferSwap(bool on) { QGLWidget::setAutoBufferSwap(on); }
};
+static int appDefaultDepth()
+{
+ static int depth = 0;
+ if (depth == 0) {
+ QPixmap pm(1, 1);
+ depth = pm.depth();
+ }
+ return depth;
+}
+
// Using INT_MIN and INT_MAX will cause failures on systems
// where "int" is 64-bit, so use the explicit values instead.
#define TEST_INT_MIN (-2147483647 - 1)
@@ -241,15 +252,10 @@
// bool QGLFormat::sampleBuffers()
// void QGLFormat::setSampleBuffers(bool)
-#if !defined(QT_OPENGL_ES_2)
QCOMPARE(false, obj1.sampleBuffers());
QVERIFY(!obj1.testOption(QGL::SampleBuffers));
QVERIFY(obj1.testOption(QGL::NoSampleBuffers));
-#else
- QCOMPARE(true, obj1.sampleBuffers());
- QVERIFY(obj1.testOption(QGL::SampleBuffers));
- QVERIFY(!obj1.testOption(QGL::NoSampleBuffers));
-#endif
+
obj1.setSampleBuffers(false);
QCOMPARE(false, obj1.sampleBuffers());
QVERIFY(obj1.testOption(QGL::NoSampleBuffers));
@@ -702,6 +708,79 @@
#endif //QT_BUILD_INTERNAL
}
+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 (appDefaultDepth() < 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__)
+
class UnclippedWidget : public QWidget
{
public:
@@ -723,6 +802,9 @@
scene.addWidget(widget)->setPos(0, 0);
QGraphicsView view(&scene);
+#ifdef Q_WS_QWS
+ view.setWindowFlags(Qt::FramelessWindowHint);
+#endif
view.resize(2*size, 2*size);
QGLWidget *viewport = new QGLWidget;
@@ -747,7 +829,7 @@
p.fillRect(QRect(0, 0, size, size), Qt::black);
p.end();
- QCOMPARE(image, expected);
+ QFUZZY_COMPARE_IMAGES(image, expected);
}
void tst_QGL::partialGLWidgetUpdates_data()
@@ -838,7 +920,18 @@
p.fillRect(32, 32, 64, 64, Qt::blue);
p.end();
- QCOMPARE(fb, reference);
+ QFUZZY_COMPARE_IMAGES(fb, reference);
+}
+
+void tst_QGL::glWidgetWithAlpha()
+{
+ QGLWidget* w = new QGLWidget(QGLFormat(QGL::AlphaChannel));
+ w->show();
+#ifdef Q_WS_X11
+ qt_x11_wait_for_window_manager(w);
+#endif
+
+ delete w;
}
class GLWidget : public QGLWidget
@@ -857,8 +950,8 @@
// This test only ensures it's possible to paint onto a QGLWidget. Full
// paint engine feature testing is way out of scope!
+ p.fillRect(-1, -1, width()+2, height()+2, Qt::red);
- p.fillRect(0, 0, width(), height(), Qt::red);
// No p.end() or swap buffers, should be done automatically
}
@@ -867,6 +960,10 @@
void tst_QGL::glWidgetRendering()
{
GLWidget w;
+#ifdef Q_WS_QWS
+ w.setWindowFlags(Qt::FramelessWindowHint);
+#endif
+ w.setGeometry(100, 100, 200, 200);
w.show();
#ifdef Q_WS_X11
@@ -881,7 +978,37 @@
QImage reference(fb.size(), QImage::Format_RGB32);
reference.fill(0xffff0000);
- QCOMPARE(fb, reference);
+ QFUZZY_COMPARE_IMAGES(fb, reference);
+}
+
+void tst_QGL::glFBOSimpleRendering()
+{
+ if (!QGLFramebufferObject::hasOpenGLFramebufferObjects())
+ QSKIP("QGLFramebufferObject not supported on this platform", SkipSingle);
+
+ QGLWidget glw;
+ glw.makeCurrent();
+
+ // No multisample with combined depth/stencil attachment:
+ QGLFramebufferObjectFormat fboFormat;
+ fboFormat.setAttachment(QGLFramebufferObject::NoAttachment);
+
+ // Don't complicate things by using NPOT:
+ QGLFramebufferObject *fbo = new QGLFramebufferObject(256, 128, 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
@@ -936,14 +1063,14 @@
// 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:
- QCOMPARE(fb.pixel(39, 64), QColor(Qt::red).rgb());
- QCOMPARE(fb.pixel(89, 64), QColor(Qt::red).rgb());
- QCOMPARE(fb.pixel(64, 39), QColor(Qt::blue).rgb());
- QCOMPARE(fb.pixel(64, 89), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(fb.pixel(39, 64), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb.pixel(89, 64), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb.pixel(64, 39), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(fb.pixel(64, 89), QColor(Qt::blue).rgb());
- QCOMPARE(fb.pixel(167, 39), QColor(Qt::red).rgb());
- QCOMPARE(fb.pixel(217, 39), QColor(Qt::red).rgb());
- QCOMPARE(fb.pixel(192, 64), QColor(Qt::green).rgb());
+ QFUZZY_COMPARE_PIXELS(fb.pixel(167, 39), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb.pixel(217, 39), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb.pixel(192, 64), QColor(Qt::green).rgb());
}
@@ -1034,29 +1161,29 @@
// 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:
- QCOMPARE(fb1.pixel(39, 64), QColor(Qt::red).rgb());
- QCOMPARE(fb1.pixel(89, 64), QColor(Qt::red).rgb());
- QCOMPARE(fb1.pixel(64, 39), QColor(Qt::blue).rgb());
- QCOMPARE(fb1.pixel(64, 89), QColor(Qt::blue).rgb());
- QCOMPARE(fb1.pixel(167, 39), QColor(Qt::red).rgb());
- QCOMPARE(fb1.pixel(217, 39), QColor(Qt::red).rgb());
- QCOMPARE(fb1.pixel(192, 64), QColor(Qt::green).rgb());
+ QFUZZY_COMPARE_PIXELS(fb1.pixel(39, 64), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb1.pixel(89, 64), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb1.pixel(64, 39), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(fb1.pixel(64, 89), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(fb1.pixel(167, 39), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb1.pixel(217, 39), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb1.pixel(192, 64), QColor(Qt::green).rgb());
- QCOMPARE(fb2.pixel(39, 64), QColor(Qt::green).rgb());
- QCOMPARE(fb2.pixel(89, 64), QColor(Qt::green).rgb());
- QCOMPARE(fb2.pixel(64, 39), QColor(Qt::red).rgb());
- QCOMPARE(fb2.pixel(64, 89), QColor(Qt::red).rgb());
- QCOMPARE(fb2.pixel(167, 39), QColor(Qt::green).rgb());
- QCOMPARE(fb2.pixel(217, 39), QColor(Qt::green).rgb());
- QCOMPARE(fb2.pixel(192, 64), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(fb2.pixel(39, 64), QColor(Qt::green).rgb());
+ QFUZZY_COMPARE_PIXELS(fb2.pixel(89, 64), QColor(Qt::green).rgb());
+ QFUZZY_COMPARE_PIXELS(fb2.pixel(64, 39), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb2.pixel(64, 89), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb2.pixel(167, 39), QColor(Qt::green).rgb());
+ QFUZZY_COMPARE_PIXELS(fb2.pixel(217, 39), QColor(Qt::green).rgb());
+ QFUZZY_COMPARE_PIXELS(fb2.pixel(192, 64), QColor(Qt::blue).rgb());
- QCOMPARE(fb3.pixel(39, 64), QColor(Qt::blue).rgb());
- QCOMPARE(fb3.pixel(89, 64), QColor(Qt::blue).rgb());
- QCOMPARE(fb3.pixel(64, 39), QColor(Qt::green).rgb());
- QCOMPARE(fb3.pixel(64, 89), QColor(Qt::green).rgb());
- QCOMPARE(fb3.pixel(167, 39), QColor(Qt::blue).rgb());
- QCOMPARE(fb3.pixel(217, 39), QColor(Qt::blue).rgb());
- QCOMPARE(fb3.pixel(192, 64), QColor(Qt::red).rgb());
+ QFUZZY_COMPARE_PIXELS(fb3.pixel(39, 64), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(fb3.pixel(89, 64), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(fb3.pixel(64, 39), QColor(Qt::green).rgb());
+ QFUZZY_COMPARE_PIXELS(fb3.pixel(64, 89), QColor(Qt::green).rgb());
+ QFUZZY_COMPARE_PIXELS(fb3.pixel(167, 39), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(fb3.pixel(217, 39), QColor(Qt::blue).rgb());
+ QFUZZY_COMPARE_PIXELS(fb3.pixel(192, 64), QColor(Qt::red).rgb());
}
class FBOUseInGLWidget : public QGLWidget
@@ -1076,11 +1203,11 @@
QPainter fboPainter;
fboPainterBeginOk = fboPainter.begin(fbo);
- fboPainter.fillRect(0, 0, 128, 128, Qt::red);
+ fboPainter.fillRect(-1, -1, 130, 130, Qt::red);
fboPainter.end();
fboImage = fbo->toImage();
- widgetPainter.fillRect(rect(), Qt::blue);
+ widgetPainter.fillRect(-1, -1, width()+2, width()+2, Qt::blue);
delete fbo;
}
@@ -1093,6 +1220,9 @@
QSKIP("QGLFramebufferObject not supported on this platform", SkipSingle);
FBOUseInGLWidget w;
+#ifdef Q_WS_QWS
+ w.setWindowFlags(Qt::FramelessWindowHint);
+#endif
w.resize(128, 128);
w.show();
@@ -1107,11 +1237,11 @@
QImage widgetFB = w.grabFrameBuffer(false);
QImage widgetReference(widgetFB.size(), widgetFB.format());
widgetReference.fill(0xff0000ff);
- QCOMPARE(widgetFB, widgetReference);
+ QFUZZY_COMPARE_IMAGES(widgetFB, widgetReference);
QImage fboReference(w.fboImage.size(), w.fboImage.format());
fboReference.fill(0xffff0000);
- QCOMPARE(w.fboImage, fboReference);
+ QFUZZY_COMPARE_IMAGES(w.fboImage, fboReference);
}
void tst_QGL::glWidgetReparent()
@@ -1205,113 +1335,9 @@
QImage reference(fb.size(), QImage::Format_RGB32);
reference.fill(0xffff0000);
- QCOMPARE(fb, reference);
+ QFUZZY_COMPARE_IMAGES(fb, reference);
}
-
-// When using multiple FBOs at the same time, unbinding one FBO should re-bind the
-// previous. I.e. It should be possible to have a stack of FBOs where pop'ing there
-// top re-binds the one underneeth.
-void tst_QGL::stackedFBOs()
-{
- if (!QGLFramebufferObject::hasOpenGLFramebufferObjects())
- QSKIP("QGLFramebufferObject not supported on this platform", SkipSingle);
-
- QGLWidget glw;
- glw.show();
-
-#ifdef Q_WS_X11
- qt_x11_wait_for_window_manager(&glw);
-#endif
- QTest::qWait(200);
-
- glw.makeCurrent();
-
- // No multisample with combined depth/stencil attachment:
- QGLFramebufferObjectFormat fboFormat;
- fboFormat.setAttachment(QGLFramebufferObject::CombinedDepthStencil);
-
- // Don't complicate things by using NPOT:
- QGLFramebufferObject *fbo1 = new QGLFramebufferObject(128, 128, fboFormat);
- QGLFramebufferObject *fbo2 = new QGLFramebufferObject(128, 128, fboFormat);
- QGLFramebufferObject *fbo3 = new QGLFramebufferObject(128, 128, fboFormat);
-
- glClearColor(1.0, 0.0, 1.0, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
-
- fbo1->bind();
- glClearColor(1.0, 0.0, 0.0, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
-
- fbo2->bind();
- glClearColor(0.0, 1.0, 0.0, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
-
- fbo3->bind();
- glClearColor(0.0, 0.0, 1.0, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
- glScissor(32, 32, 64, 64);
- glEnable(GL_SCISSOR_TEST);
- glClearColor(0.0, 1.0, 1.0, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
- fbo3->release();
-
- // Scissor rect & test should be left untouched by the fbo release...
- glClearColor(0.0, 0.0, 0.0, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
- fbo2->release();
-
- glClearColor(1.0, 1.0, 1.0, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
- fbo1->release();
-
- glClearColor(1.0, 1.0, 0.0, 1.0);
- glClear(GL_COLOR_BUFFER_BIT);
-
- glw.swapBuffers();
-
- QImage widgetFB = glw.grabFrameBuffer(false).convertToFormat(QImage::Format_RGB32);
- QImage fb1 = fbo1->toImage().convertToFormat(QImage::Format_RGB32);
- QImage fb2 = fbo2->toImage().convertToFormat(QImage::Format_RGB32);
- QImage fb3 = fbo3->toImage().convertToFormat(QImage::Format_RGB32);
-
- delete fbo1;
- delete fbo2;
- delete fbo3;
-
- QImage widgetReference(widgetFB.size(), widgetFB.format());
- QImage fb1Reference(fb1.size(), fb1.format());
- QImage fb2Reference(fb2.size(), fb2.format());
- QImage fb3Reference(fb3.size(), fb3.format());
-
- QPainter widgetReferencePainter(&widgetReference);
- QPainter fb1ReferencePainter(&fb1Reference);
- QPainter fb2ReferencePainter(&fb2Reference);
- QPainter fb3ReferencePainter(&fb3Reference);
-
- widgetReferencePainter.fillRect(0, 0, widgetReference.width(), widgetReference.height(), Qt::magenta);
- fb1ReferencePainter.fillRect(0, 0, fb1Reference.width(), fb1Reference.height(), Qt::red);
- fb2ReferencePainter.fillRect(0, 0, fb2Reference.width(), fb2Reference.height(), Qt::green);
- fb3ReferencePainter.fillRect(0, 0, fb3Reference.width(), fb3Reference.height(), Qt::blue);
-
- // Flip y-coords to match GL for the widget (which can be any size)
- widgetReferencePainter.fillRect(32, glw.height() - 96, 64, 64, Qt::yellow);
- fb1ReferencePainter.fillRect(32, 32, 64, 64, Qt::white);
- fb2ReferencePainter.fillRect(32, 32, 64, 64, Qt::black);
- fb3ReferencePainter.fillRect(32, 32, 64, 64, Qt::cyan);
-
- widgetReferencePainter.end();
- fb1ReferencePainter.end();
- fb2ReferencePainter.end();
- fb3ReferencePainter.end();
-
- QCOMPARE(widgetFB, widgetReference);
- QCOMPARE(fb1, fb1Reference);
- QCOMPARE(fb2, fb2Reference);
- QCOMPARE(fb3, fb3Reference);
-}
-
-
class ColormapExtended : public QGLColormap
{
public:
@@ -1583,6 +1609,9 @@
void tst_QGL::replaceClipping()
{
ReplaceClippingGLWidget glw;
+#ifdef Q_WS_QWS
+ glw.setWindowFlags(Qt::FramelessWindowHint);
+#endif
glw.resize(300, 300);
glw.show();
@@ -1598,7 +1627,13 @@
const QImage widgetFB = glw.grabFrameBuffer(false).convertToFormat(QImage::Format_RGB32);
- QCOMPARE(widgetFB, reference);
+ // Sample pixels in a grid pattern which avoids false failures due to
+ // off-by-one pixel errors on some buggy GL implementations
+ for (int x = 25; x < reference.width(); x += 50) {
+ for (int y = 25; y < reference.width(); y += 50) {
+ QFUZZY_COMPARE_PIXELS(widgetFB.pixel(x, y), reference.pixel(x, y));
+ }
+ }
}
class ClipTestGLWidget : public QGLWidget
@@ -1606,7 +1641,7 @@
public:
void paint(QPainter *painter)
{
- painter->fillRect(rect(), Qt::white);
+ painter->fillRect(-1, -1, width()+2, height()+2, Qt::white);
painter->setClipRect(10, 10, width()-20, height()-20);
painter->fillRect(rect(), Qt::cyan);
@@ -1708,6 +1743,9 @@
void tst_QGL::clipTest()
{
ClipTestGLWidget glw;
+#ifdef Q_WS_QWS
+ glw.setWindowFlags(Qt::FramelessWindowHint);
+#endif
glw.resize(220, 220);
glw.show();
@@ -1723,7 +1761,13 @@
const QImage widgetFB = glw.grabFrameBuffer(false).convertToFormat(QImage::Format_RGB32);
- QCOMPARE(widgetFB, reference);
+ // Sample pixels in a grid pattern which avoids false failures due to
+ // off-by-one pixel errors on some buggy GL implementations
+ for (int x = 2; x < reference.width(); x += 5) {
+ for (int y = 2; y < reference.width(); y += 5) {
+ QFUZZY_COMPARE_PIXELS(widgetFB.pixel(x, y), reference.pixel(x, y));
+ }
+ }
}
void tst_QGL::destroyFBOAfterContext()
@@ -1805,12 +1849,14 @@
QVERIFY(qt_shared_test()->value(glw1->context()) == res1);
// Create another context that shares with the first.
+ QVERIFY(!glw1->isSharing());
QGLWidget *glw2 = new QGLWidget(0, glw1);
if (!glw2->isSharing()) {
delete glw2;
delete glw1;
QSKIP("Context sharing is not supported", SkipSingle);
}
+ QVERIFY(glw1->isSharing());
QVERIFY(glw1->context() != glw2->context());
// Check that the first context's resource is also on the second.
@@ -1842,6 +1888,7 @@
// Create a third context, not sharing with the others.
QGLWidget *glw3 = new QGLWidget();
+ QVERIFY(!glw3->isSharing());
// Create a guard on the standalone context.
QGLSharedResourceGuard guard3(glw3->context());
@@ -1890,6 +1937,9 @@
// Delete the first context.
delete glw1;
+ // The second context should no longer register as sharing.
+ QVERIFY(!glw2->isSharing());
+
// The first context's resource should transfer to the second context.
QCOMPARE(tst_QGLResource::deletions, 0);
QVERIFY(qt_shared_test()->value(glw2->context()) == res1);