The Agar cocoa driver provides a direct interface to the Cocoa API. On the MacOS X platform, cocoa is usually selected as the default driver.

AG_Driver(3)-> AG_DriverMw(3)-> AG_DriverCocoa.

debug	Capture GL_DEBUG_OUTPUT errors.
stereo	Request a stereoscopic visual.

AG_Driver(3), AG_GL(3), AG_InitGraphics(3), AG_Intro(3)

•  OpenGL
  
•  Apple Developer

The cocoa driver first appeared in Agar 1.5.0. The "debug" option appeared in Agar 1.6.0.