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.