void CubeMapTextureGLTest::generateMipmap() {
    CubeMapTexture texture;
    texture.setImage(CubeMapTexture::Coordinate::PositiveX, 0, TextureFormat::RGBA8,
        ImageReference2D(ColorFormat::RGBA, ColorType::UnsignedByte, Vector2i(32)));
    texture.setImage(CubeMapTexture::Coordinate::PositiveY, 0, TextureFormat::RGBA8,
        ImageReference2D(ColorFormat::RGBA, ColorType::UnsignedByte, Vector2i(32)));
    texture.setImage(CubeMapTexture::Coordinate::PositiveZ, 0, TextureFormat::RGBA8,
        ImageReference2D(ColorFormat::RGBA, ColorType::UnsignedByte, Vector2i(32)));
    texture.setImage(CubeMapTexture::Coordinate::NegativeX, 0, TextureFormat::RGBA8,
        ImageReference2D(ColorFormat::RGBA, ColorType::UnsignedByte, Vector2i(32)));
    texture.setImage(CubeMapTexture::Coordinate::NegativeY, 0, TextureFormat::RGBA8,
        ImageReference2D(ColorFormat::RGBA, ColorType::UnsignedByte, Vector2i(32)));
    texture.setImage(CubeMapTexture::Coordinate::NegativeZ, 0, TextureFormat::RGBA8,
        ImageReference2D(ColorFormat::RGBA, ColorType::UnsignedByte, Vector2i(32)));

    /** @todo How to test this on ES? */
    #ifndef MAGNUM_TARGET_GLES
    CORRADE_COMPARE(texture.imageSize(0), Vector2i(32));
    CORRADE_COMPARE(texture.imageSize(1), Vector2i( 0));
    #endif

    texture.generateMipmap();

    MAGNUM_VERIFY_NO_ERROR();

    /** @todo How to test this on ES? */
    #ifndef MAGNUM_TARGET_GLES
    CORRADE_COMPARE(texture.imageSize(0), Vector2i(32));
    CORRADE_COMPARE(texture.imageSize(1), Vector2i(16));
    CORRADE_COMPARE(texture.imageSize(2), Vector2i( 8));
    CORRADE_COMPARE(texture.imageSize(3), Vector2i( 4));
    CORRADE_COMPARE(texture.imageSize(4), Vector2i( 2));
    CORRADE_COMPARE(texture.imageSize(5), Vector2i( 1));

    MAGNUM_VERIFY_NO_ERROR();
    #endif
}
Example #2
0
CubeMap::CubeMap(const std::string& prefix, Object3D* parent, SceneGraph::DrawableGroup3D<>* group): Object3D(parent), SceneGraph::Drawable3D<>(this, group) {
    CubeMapResourceManager* resourceManager = CubeMapResourceManager::instance();

    /* Cube mesh */
    if(!(cube = resourceManager->get<Mesh>("cube"))) {
        Mesh* mesh = new Mesh;
        Buffer* buffer = new Buffer;
        Buffer* indexBuffer = new Buffer;

        Trade::MeshData3D cubeData = Primitives::Cube::solid();
        MeshTools::flipFaceWinding(*cubeData.indices());
        MeshTools::compressIndices(mesh, indexBuffer, Buffer::Usage::StaticDraw, *cubeData.indices());
        MeshTools::interleave(mesh, buffer, Buffer::Usage::StaticDraw, *cubeData.positions(0));
        mesh->setPrimitive(cubeData.primitive())
            ->addVertexBuffer(buffer, 0, CubeMapShader::Position());

        resourceManager->set("cube-buffer", buffer, ResourceDataState::Final, ResourcePolicy::Resident);
        resourceManager->set("cube-index-buffer", indexBuffer, ResourceDataState::Final, ResourcePolicy::Resident);
        resourceManager->set(cube.key(), mesh, ResourceDataState::Final, ResourcePolicy::Resident);
    }

    /* Cube map texture */
    if(!(texture = resourceManager->get<CubeMapTexture>("texture"))) {
        CubeMapTexture* cubeMap = new CubeMapTexture;

        cubeMap->setWrapping(CubeMapTexture::Wrapping::ClampToEdge)
            ->setMagnificationFilter(CubeMapTexture::Filter::Linear)
            ->setMinificationFilter(CubeMapTexture::Filter::Linear, CubeMapTexture::Mipmap::Linear);

        Resource<Trade::AbstractImporter> importer = resourceManager->get<Trade::AbstractImporter>("tga-importer");

        /* Configure texture storage using size of first image */
        importer->openFile(prefix + "+x.tga");
        Trade::ImageData2D* image = importer->image2D(0);
        Vector2i size = image->size();
        cubeMap->setStorage(Math::log2(size.min())+1, CubeMapTexture::InternalFormat::RGB8, size);
        cubeMap->setSubImage(CubeMapTexture::PositiveX, 0, {}, image);
        delete image;

        importer->openFile(prefix + "-x.tga");
        image = importer->image2D(0);
        cubeMap->setSubImage(CubeMapTexture::NegativeX, 0, {}, image);
        delete image;

        importer->openFile(prefix + "+y.tga");
        image = importer->image2D(0);
        cubeMap->setSubImage(CubeMapTexture::PositiveY, 0, {}, image);
        delete image;

        importer->openFile(prefix + "-y.tga");
        image = importer->image2D(0);
        cubeMap->setSubImage(CubeMapTexture::NegativeY, 0, {}, image);
        delete image;

        importer->openFile(prefix + "+z.tga");
        image = importer->image2D(0);
        cubeMap->setSubImage(CubeMapTexture::PositiveZ, 0, {}, image);
        delete image;

        importer->openFile(prefix + "-z.tga");
        image = importer->image2D(0);
        cubeMap->setSubImage(CubeMapTexture::NegativeZ, 0, {}, image);
        delete image;

        cubeMap->generateMipmap();

        resourceManager->set(texture.key(), cubeMap, ResourceDataState::Final, ResourcePolicy::Manual);
    }

    /* Shader */
    if(!(shader = resourceManager->get<AbstractShaderProgram, CubeMapShader>("shader")))
        resourceManager->set<AbstractShaderProgram>(shader.key(), new CubeMapShader, ResourceDataState::Final, ResourcePolicy::Manual);
}