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#include <QtCore/QString>
#include <QtTest/QtTest>
#include <QtCore/QCoreApplication>
#include <qsgcontext.h>
#include <qsgtexturemanager.h>
class TextureManagerTest : public QObject
{
Q_OBJECT
public:
TextureManagerTest();
private Q_SLOTS:
void initTestCase();
void cleanupTestCase();
void upload();
void uploadSameImageTwice();
void requestUpload();
void gracefullyRunOutOfMemory();
void gracefullyFailOnTooLarge();
void maxTextureSize();
private:
QSGContext *context;
QGLWidget *glWidget;
QSGTextureManager *tm;
};
TextureManagerTest::TextureManagerTest()
{
}
void TextureManagerTest::initTestCase()
{
glWidget = new QGLWidget();
glWidget->resize(300, 200);
glWidget->show();
context = new QSGContext();
context->initialize(const_cast<QGLContext *>(glWidget->context()));
tm = context->textureManager();
}
void TextureManagerTest::cleanupTestCase()
{
delete context;
delete glWidget;
}
/*!
Verify that uploads work and are synchronous and that
size of returned texture must be at least image dims.
*/
void TextureManagerTest::upload()
{
QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);
QSGTextureRef t = tm->upload(image);
QVERIFY(!t.isNull());
QVERIFY(t.isReady());
QVERIFY(t->textureId() > 0);
QVERIFY(t->textureSize().width() >= image.width());
QVERIFY(t->textureSize().height() >= image.height());
}
/*!
Verify that two requests of the same image returns the same texture.
*/
void TextureManagerTest::uploadSameImageTwice()
{
QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);
QSGTextureRef t = tm->upload(image);
QImage shallowCopy = image;
QSGTextureRef t2 = tm->upload(shallowCopy);
QCOMPARE(t.texture(), t2.texture());
}
void TextureManagerTest::requestUpload()
{
QImage image(100, 100, QImage::Format_ARGB32_Premultiplied);
QSGTextureRef t = tm->requestUpload(image, 0, 0);
QVERIFY(t->status() == QSGTexture::Ready || t->status() == QSGTexture::Loading);
int maxWait = 1000;
while (t->status() == QSGTexture::Loading) {
QTest::qWait(50);
QApplication::processEvents();
}
QVERIFY(t->status() == QSGTexture::Ready);
QVERIFY(t->textureId() > 0);
QVERIFY(t->textureSize().width() >= image.width());
QVERIFY(t->textureSize().height() >= image.height());
}
/*!
Test that we don't fail horribly when allocating large amounts of
texture memory. Since some drivers page graphics memory out to disk
and thus never run out, cap the test at 128Mb to not run forever
*/
void TextureManagerTest::gracefullyRunOutOfMemory()
{
QImage image(512, 512, QImage::Format_ARGB32_Premultiplied);
QList<QSGTextureRef> refs;
int i = 128;
while (--i) {
QSGTextureRef t = tm->upload(image);
refs << t;
if (t.isNull())
break;
}
QVERIFY(true);
}
void TextureManagerTest::gracefullyFailOnTooLarge()
{
QImage image(32000, 2, QImage::Format_ARGB32_Premultiplied);
QSGTextureRef t = tm->upload(image);
QVERIFY(t.isNull());
}
void TextureManagerTest::maxTextureSize()
{
int size = tm->maxTextureSize();
if (size < 1024) {
qWarning("Texture limit is only %d", size);
}
// 64 is the lowest allowed by the spec...
// Any lower number would indicate an error
QVERIFY(size >=64); }
QTEST_MAIN(TextureManagerTest);
#include "tst_texturemanagertest.moc"
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