Method Image

src/Image.cpp:658–685

atomic<int> Image::sId(0);

Image::Image(const fs::path& path, fs::file_time_type fileLastModified, ImageData&& data, string_view channelSelector, bool groupChannels) :
    mPath{path}, mFileLastModified{fileLastModified}, mChannelSelector{channelSelector}, mData{std::move(data)}, mId{Image::drawId()} {
    mName = channelSelector.empty() ? tev::toDisplayString(path) : fmt::format("{}:{}", tev::toDisplayString(path), channelSelector);

    if (groupChannels) {
        for (const auto& l : mData.layers) {
            const auto groups = getGroupedChannels(l);
            mChannelGroups.insert(end(mChannelGroups), begin(groups), end(groups));
        }
    } else {
        // If we don't group channels, then each channel is its own group.
        for (const auto& c : mData.channels) {
            mChannelGroups.emplace_back(
                ChannelGroup{
                    string{c.name()},
                    vector<string>{string{c.name()}, string{c.name()}, string{c.name()}}
            }
            );
        }
    }

    // Ensure that alpha channels are last in their group
    for (const auto& group : mChannelGroups) {
        for (const auto& channel : group.channels) {
            TEV_ASSERT(Channel::tail(channel) != "A" || &channel == &group.channels.back(), "Alpha channel must be last in channel group.");
        }
    }
}

Image::~Image() {
    // Move the texture pointers to the main thread such that their reference count hits zero there. This is required, because OpenGL calls