tst_gltexturemanager.cpp

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// Copyright (C) 2020 Klaralvdalens Datakonsult AB (KDAB).

// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only

#include <QtTest/QTest>

#include <Qt3DRender/QTextureImageDataGenerator>

#include <glresourcemanagers_p.h>

#include <glresourcemanagers_p.h>

#include <gltexture_p.h>

#include <Qt3DCore/qnodeid.h>

#include "qbackendnodetester.h"

#include "testrenderer.h"

class TestImageDataGenerator : public Qt3DRender::QTextureImageDataGenerator

    int m_id;

public:

    TestImageDataGenerator(int id) : m_id(id) {}

    Qt3DRender::QTextureImageDataPtr operator ()() override {

        return Qt3DRender::QTextureImageDataPtr::create();

    bool operator ==(const Qt3DRender::QTextureImageDataGenerator &other) const override {

        const TestImageDataGenerator *otherFunctor = Qt3DCore::functor_cast<TestImageDataGenerator>(&other);

        return (otherFunctor != nullptr && otherFunctor->m_id == m_id);

    QT3D_FUNCTOR(TestImageDataGenerator)

};

using ImageDataGeneratorPtr = QSharedPointer<TestImageDataGenerator>;

class tst_GLTextureManager : public Qt3DCore::QBackendNodeTester

    Q_OBJECT

private Q_SLOTS:

    void checkInitialState()

        // GIVEN

        Qt3DRender::Render::OpenGL::GLTextureManager manager;

        const Qt3DCore::QNodeId id = Qt3DCore::QNodeId::createId();

        Qt3DRender::Render::OpenGL::GLTexture *t = manager.getOrCreateResource(id);

        // THEN

        QVERIFY(t != nullptr);

        QVERIFY(!t->isDirty());

        QVERIFY(!t->hasTextureData());

        QVERIFY(!t->hasImagesData());

        QVERIFY(t->dataGenerator().isNull());

        QVERIFY(t->textureDataUpdates().empty());

        QCOMPARE(t->dirtyFlags(),  Qt3DRender::Render::OpenGL::GLTexture::None);

        QVERIFY(t->images().empty());

        QCOMPARE(t, manager.getOrCreateResource(id));

    void checkCleanup()

        // GIVEN

        Qt3DRender::Render::OpenGL::GLTextureManager manager;

        const Qt3DCore::QNodeId id = Qt3DCore::QNodeId::createId();

        Qt3DRender::Render::OpenGL::GLTexture *t = manager.getOrCreateResource(id);

        // WHEN

        Qt3DRender::Render::OpenGL::GLTexture::Image img = {

            ImageDataGeneratorPtr::create(0),

            0, 0,

            Qt3DRender::QAbstractTexture::AllFaces

};

        t->setImages({img});

        // THEN

        QCOMPARE(t->images().size(), 1U);

        QCOMPARE(t->dirtyFlags(),  Qt3DRender::Render::OpenGL::GLTexture::TextureImageData);

        // WHEN

        manager.releaseResource(id);

        // THEN -> Cleanup should have been called

        Qt3DRender::Render::OpenGL::GLTexture *t2 = manager.getOrCreateResource(id);

        QCOMPARE(t, t2);

        QVERIFY(t->images().empty());

        QCOMPARE(t->dirtyFlags(),  Qt3DRender::Render::OpenGL::GLTexture::None);

};

QTEST_APPLESS_MAIN(tst_GLTextureManager)

#include "tst_gltexturemanager.moc"