C++ CubeMapTexture::setStorage方法代码示例

void FramebufferGLTest::attachCubeMapTexture() {
    #ifndef MAGNUM_TARGET_GLES
    if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::framebuffer_object>())
        CORRADE_SKIP(Extensions::GL::ARB::framebuffer_object::string() + std::string(" is not available."));
    #endif

    Framebuffer framebuffer({{}, Vector2i(128)});

    CubeMapTexture color;
    #ifndef MAGNUM_TARGET_GLES2
    color.setStorage(1, TextureFormat::RGBA8, Vector2i(128));
    #else
    color.setStorage(1, TextureFormat::RGBA, Vector2i(128));
    #endif
    framebuffer.attachCubeMapTexture(Framebuffer::ColorAttachment(0), color, CubeMapTexture::Coordinate::NegativeZ, 0);

    CubeMapTexture depthStencil;

    #ifdef MAGNUM_TARGET_GLES2
    if(Context::current()->isExtensionSupported<Extensions::GL::OES::packed_depth_stencil>())
    #endif
    {
        #ifdef MAGNUM_TARGET_GLES2
        Debug() << "Using" << Extensions::GL::OES::packed_depth_stencil::string();
        #endif

        #ifndef MAGNUM_TARGET_GLES2
        depthStencil.setStorage(1, TextureFormat::Depth24Stencil8, Vector2i(128));
        framebuffer.attachCubeMapTexture(Framebuffer::BufferAttachment::DepthStencil, depthStencil, CubeMapTexture::Coordinate::NegativeZ, 0);
        #else
        depthStencil.setStorage(1, TextureFormat::DepthStencil, Vector2i(128));
        framebuffer.attachCubeMapTexture(Framebuffer::BufferAttachment::Depth, depthStencil, CubeMapTexture::Coordinate::NegativeZ, 0)
                   .attachCubeMapTexture(Framebuffer::BufferAttachment::Stencil, depthStencil, CubeMapTexture::Coordinate::NegativeZ, 0);
        #endif
    }

    #ifdef MAGNUM_TARGET_GLES2
    else if(Context::current()->isExtensionSupported<Extensions::GL::OES::depth_texture>()) {
        Debug() << "Using" << Extensions::GL::OES::depth_texture::string();

        depthStencil.setStorage(1, TextureFormat::DepthComponent16, Vector2i(128));
        framebuffer.attachCubeMapTexture(Framebuffer::BufferAttachment::Depth, depthStencil, CubeMapTexture::Coordinate::NegativeZ, 0);
    }
    #endif

    MAGNUM_VERIFY_NO_ERROR();
    CORRADE_COMPARE(framebuffer.checkStatus(FramebufferTarget::ReadDraw), Framebuffer::Status::Complete);
}

void CubeMapTextureGLTest::invalidateSubImage() {
    CubeMapTexture texture;
    texture.setStorage(2, TextureFormat::RGBA8, Vector2i(32));
    texture.invalidateSubImage(1, Vector3i(2), Vector3i(Vector2i(8), 4));

    MAGNUM_VERIFY_NO_ERROR();
}

void CubeMapTextureGLTest::imageFullBuffer() {
    if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::direct_state_access>())
        CORRADE_SKIP(Extensions::GL::ARB::direct_state_access::string() + std::string(" is not supported."));

    CubeMapTexture texture;
    texture.setStorage(1, TextureFormat::RGBA8, Vector2i{2})
        .setSubImage(0, {}, BufferImage3D{ColorFormat::RGBA, ColorType::UnsignedByte, Vector3i{2, 2, 6}, DataFull, BufferUsage::StaticDraw});

    MAGNUM_VERIFY_NO_ERROR();

    BufferImage3D image = texture.image(0, {ColorFormat::RGBA, ColorType::UnsignedByte}, BufferUsage::StaticRead);

    MAGNUM_VERIFY_NO_ERROR();

    CORRADE_COMPARE(image.size(), Vector3i(2, 2, 6));
    const auto imageData = image.buffer().data<UnsignedByte>();
    CORRADE_COMPARE_AS(imageData, Containers::ArrayReference<const UnsignedByte>{DataFull}, TestSuite::Compare::Container);
}

void CubeMapTextureGLTest::imageFull() {
    if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::direct_state_access>())
        CORRADE_SKIP(Extensions::GL::ARB::direct_state_access::string() + std::string(" is not supported."));

    CubeMapTexture texture;
    texture.setStorage(1, TextureFormat::RGBA8, Vector2i{2, 2})
        .setSubImage(0, {}, ImageReference3D{ColorFormat::RGBA, ColorType::UnsignedByte, Vector3i{2, 2, 6}, DataFull});

    MAGNUM_VERIFY_NO_ERROR();

    Image3D image = texture.image(0, {ColorFormat::RGBA, ColorType::UnsignedByte});

    MAGNUM_VERIFY_NO_ERROR();

    CORRADE_COMPARE(image.size(), Vector3i(2, 2, 6));
    CORRADE_COMPARE_AS(
        Containers::ArrayReference<const UnsignedByte>(image.data<UnsignedByte>(), image.pixelSize()*image.size().product()),
        Containers::ArrayReference<const UnsignedByte>{DataFull}, TestSuite::Compare::Container);
}

void CubeMapTextureGLTest::subImageQueryBuffer() {
    if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::get_texture_sub_image>())
        CORRADE_SKIP(Extensions::GL::ARB::get_texture_sub_image::string() + std::string(" is not supported."));
    /* I'm too lazy to call setSubImage() six times */
    if(!Context::current()->isExtensionSupported<Extensions::GL::ARB::direct_state_access>())
        CORRADE_SKIP(Extensions::GL::ARB::direct_state_access::string() + std::string(" is not supported."));

    CubeMapTexture texture;
    texture.setStorage(1, TextureFormat::RGBA8, Vector2i{4})
           .setSubImage(0, {}, ImageReference3D{ColorFormat::RGBA, ColorType::UnsignedByte, {4, 4, 1}, SubDataComplete});

    MAGNUM_VERIFY_NO_ERROR();

    BufferImage3D image = texture.subImage(0, Range3Di::fromSize({1, 1, 0}, {2, 2, 1}), {ColorFormat::RGBA, ColorType::UnsignedByte}, BufferUsage::StaticRead);
    const auto imageData = image.buffer().data<UnsignedByte>();

    MAGNUM_VERIFY_NO_ERROR();

    CORRADE_COMPARE(image.size(), Vector3i(2, 2, 1));
    CORRADE_COMPARE_AS(imageData, Containers::ArrayReference<const UnsignedByte>{Data}, TestSuite::Compare::Container);
}

void CubeMapTextureGLTest::storage() {
    CubeMapTexture texture;
    texture.setStorage(5, TextureFormat::RGBA8, Vector2i(32));

    MAGNUM_VERIFY_NO_ERROR();

    #ifndef MAGNUM_TARGET_GLES2
    #ifdef MAGNUM_TARGET_GLES
    if(!Context::current()->isVersionSupported(Version::GLES310))
        CORRADE_SKIP("OpenGL ES 3.1 not supported, skipping image size testing");
    #endif

    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));
    /* Not available */
    CORRADE_COMPARE(texture.imageSize(5), Vector2i(0));

    MAGNUM_VERIFY_NO_ERROR();
    #endif
}

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);
}