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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <qtest.h>
#include <QGuiApplication>
#include <QtQuick/qquickitem.h>
#include <QtQuick/qquickview.h>
#include <qopenglcontext.h>
#include <qopenglframebufferobject.h>
#include <qopenglfunctions.h>
#include <QtQuick/QQuickFramebufferObject>
#include <QtQuickTestUtils/private/qmlutils_p.h>
#ifndef GL_MAX_SAMPLES
#define GL_MAX_SAMPLES 0x8D57
#endif
struct FrameInfo {
int renderCount;
int createFBOCount;
bool msaaSupported;
bool msaaEnabled;
QSize fboSize;
} frameInfo;
class ColorRenderer : public QQuickFramebufferObject::Renderer, protected QOpenGLFunctions
{
public:
void render() override;
void synchronize(QQuickFramebufferObject *item) override;
QOpenGLFramebufferObject *createFramebufferObject(const QSize &size) override;
QSize textureSize;
QColor color;
bool msaa;
};
class FBOItem : public QQuickFramebufferObject
{
Q_OBJECT
Q_PROPERTY(bool msaa READ msaa WRITE setMsaa NOTIFY msaaChanged)
Q_PROPERTY(QColor color READ color WRITE setColor NOTIFY colorChanged)
Q_PROPERTY(QSize textureSize READ textureSize WRITE setTextureSize NOTIFY textureSizeChanged)
public:
Renderer *createRenderer() const override { return new ColorRenderer(); }
void setColor(const QColor &color) { m_color = color; colorChanged(m_color); }
QColor color() const { return m_color; }
void setMsaa(bool msaa) { m_msaa = msaa; msaaChanged(m_msaa); }
bool msaa() const { return m_msaa; }
void setTextureSize(const QSize &size) { m_textureSize = size; textureSizeChanged(m_textureSize); }
QSize textureSize() const { return m_textureSize; }
signals:
void colorChanged(const QColor &color);
void msaaChanged(bool msaa);
void textureSizeChanged(const QSize &size);
public:
bool m_msaa;
QColor m_color;
QSize m_textureSize;
};
void ColorRenderer::render()
{
glClearColor(color.redF(), color.greenF(), color.blueF(), color.alphaF());
glClear(GL_COLOR_BUFFER_BIT);
int maxSamples = 0;
glGetIntegerv(GL_MAX_SAMPLES, &maxSamples);
QByteArray extensions((const char *) glGetString(GL_EXTENSIONS));
frameInfo.msaaSupported = maxSamples > 0
&& extensions.contains("GL_EXT_framebuffer_multisample")
&& extensions.contains("GL_EXT_framebuffer_blit");
int samples;
glGetIntegerv(GL_SAMPLES, &samples);
frameInfo.msaaEnabled = samples > 0;
frameInfo.fboSize = framebufferObject()->size();
frameInfo.renderCount++;
}
void ColorRenderer::synchronize(QQuickFramebufferObject *item)
{
FBOItem *fboItem = qobject_cast<FBOItem *>(item);
color = fboItem->color();
msaa = fboItem->msaa();
if (textureSize != fboItem->textureSize()) {
textureSize = fboItem->textureSize();
invalidateFramebufferObject();
}
}
QOpenGLFramebufferObject *ColorRenderer::createFramebufferObject(const QSize &size)
{
initializeOpenGLFunctions();
frameInfo.createFBOCount++;
QOpenGLFramebufferObjectFormat format;
if (msaa)
format.setSamples(4);
QSize s = textureSize.isValid() ? textureSize : size;
return new QOpenGLFramebufferObject(s, format);
}
class tst_QQuickFramebufferObject: public QQmlDataTest
{
Q_OBJECT
public:
tst_QQuickFramebufferObject();
private slots:
void initTestCase() override;
void testThatStuffWorks_data();
void testThatStuffWorks();
void testInvalidate();
};
tst_QQuickFramebufferObject::tst_QQuickFramebufferObject()
: QQmlDataTest(QT_QMLTEST_DATADIR)
{
}
void tst_QQuickFramebufferObject::initTestCase()
{
QQmlDataTest::initTestCase();
QQuickWindow::setGraphicsApi(QSGRendererInterface::OpenGLRhi);
}
void tst_QQuickFramebufferObject::testThatStuffWorks_data()
{
QTest::addColumn<uint>("color");
QTest::addColumn<bool>("msaa");
QTest::addColumn<QSize>("textureSize");
QTest::newRow("red, !aa, item-size") << 0xffff0000 << false << QSize();
QTest::newRow("green, !aa, 80x80") << 0xff00ff00 << false << QSize(80, 80);
QTest::newRow("blue, aa, item-size") << 0xff0000ff << true << QSize();
QTest::newRow("pink, aa, 80x80") << 0xffff00ff << true << QSize(80, 80);
}
void tst_QQuickFramebufferObject::testThatStuffWorks()
{
QFETCH(uint, color);
QFETCH(bool, msaa);
QFETCH(QSize, textureSize);
#if defined(Q_OS_WIN32) && defined(QT_OPENGL_ES_2_ANGLE)
QSKIP("QTBUG-41815");
#endif
frameInfo.renderCount = 0;
frameInfo.msaaEnabled = false;
frameInfo.msaaSupported = false;
frameInfo.fboSize = QSize();
qmlRegisterType<FBOItem>("FBOItem", 1, 0, "FBOItem");
QQuickView view;
view.setSource(testFileUrl("testStuff.qml"));
FBOItem *item = view.rootObject()->findChild<FBOItem *>("fbo");
item->setColor(color);
if (textureSize.isValid()) {
item->setTextureFollowsItemSize(false);
item->setTextureSize(textureSize);
}
item->setMsaa(msaa);
view.show();
view.requestActivate();
QVERIFY(QTest::qWaitForWindowExposed(&view));
if (QGuiApplication::platformName() == "offscreen" &&
view.rendererInterface()->graphicsApi() == QSGRendererInterface::Software)
QSKIP("offscreen software rendering doesn't work with FBOs");
QImage result = view.grabWindow();
QCOMPARE(frameInfo.renderCount, 1);
QCOMPARE(result.pixel(0, 0), color);
if (textureSize.isValid())
QCOMPARE(frameInfo.fboSize, textureSize);
else
QCOMPARE(frameInfo.fboSize, QSize(item->width(), item->height()) * view.devicePixelRatio());
if (frameInfo.msaaSupported && msaa)
QVERIFY(frameInfo.msaaEnabled);
// Resize the item and grab again
item->setSize(QSize(200, 200));
result = view.grabWindow();
QCOMPARE(frameInfo.renderCount, 2);
QCOMPARE(result.pixel(150, 150), color);
if (textureSize.isValid())
QCOMPARE(frameInfo.fboSize, textureSize);
else
QCOMPARE(frameInfo.fboSize, QSize(item->width(), item->height()) * view.devicePixelRatio());
if (frameInfo.msaaSupported && msaa)
QVERIFY(frameInfo.msaaEnabled);
}
void tst_QQuickFramebufferObject::testInvalidate()
{
qmlRegisterType<FBOItem>("FBOItem", 1, 0, "FBOItem");
QQuickView view;
view.setSource(testFileUrl("testStuff.qml"));
FBOItem *item = view.rootObject()->findChild<FBOItem *>("fbo");
item->setTextureFollowsItemSize(false);
item->setTextureSize(QSize(200, 200));
view.show();
view.requestActivate();
QVERIFY(QTest::qWaitForWindowExposed(&view));
if (QGuiApplication::platformName() == "offscreen" &&
view.rendererInterface()->graphicsApi() == QSGRendererInterface::Software)
QSKIP("offscreen software rendering doesn't work with FBOs");
QCOMPARE(frameInfo.fboSize, QSize(200, 200));
frameInfo.createFBOCount = 0;
item->setTextureSize(QSize(300, 300));
item->update();
QTRY_COMPARE(frameInfo.createFBOCount, 1);
QTRY_COMPARE(frameInfo.fboSize, QSize(300, 300));
}
QTEST_MAIN(tst_QQuickFramebufferObject)
#include "tst_qquickframebufferobject.moc"
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