glheadless

glheadless is a small library to simplify the creation of headless (i.e. without any visible window) OpenGL contexts on multiple platforms.

Features

• Easy to use context management.
• Context stealing: Capture the current context created by any other library, especially useful for
• Shared context creation, e.g. for multithreaded applications.

Example

Here is a simple example of how to create a context:

    //! [Creating a context]
    ContextFormat format;
    format.versionMajor = 4;
    format.versionMinor = 5;
    auto context = ContextFactory::create(format);
    //! [Creating a context]


    //! [Checking for errors]
    if (!context->valid()) {
        std::cerr << context->lastErrorMessage() << ": " << context->lastErrorCode().message() << " (" << context->lastErrorCode() << ")" << std::endl;
        return EXIT_FAILURE;
    }
    //! [Checking for errors]

    context->makeCurrent();

    const auto versionString = reinterpret_cast<const char*>(glGetString(GL_VERSION));
    std::cout << "Created context with version " << versionString << std::endl;

    context->doneCurrent();

Have a look at the source/examples folder for some more.

Supported platforms

Currently, the following platforms are supported:

• Windows (using the Windows API)
• Max OS X (using the CGL API)
• Linux (using the EGL or GLX API)

Compilers

A C++11 compatible compiler is required to compile glheadless.