This will help reduce differences between multiple vendors' OpenGL drivers, resulting in enhanced portability for developers. Khronos will offer certification of drivers from version 3.3, and full certification is mandatory for OpenGL 4.4 and onwards. In addition to the OpenGL 4.4 specification, the OpenGL ARB (Architecture Review Board) Working Group at Khronos has created the first set of formal OpenGL conformance tests since OpenGL 2.0. The full specification and reference materials are available for immediate download here. Also, OpenGL 4.4 defines new functionality to streamline the porting of applications and titles from other platforms and APIs. OpenGL 4.4 unlocks capabilities of today's leading-edge graphics hardware while maintaining full backwards compatibility, enabling applications to incrementally use new features while portably accessing state-of-the-art graphics processing units (GPUs) across diverse operating systems and platforms. The Khronos Group today announced the immediate release of the OpenGL 4.4 specification, bringing the very latest graphics functionality to the most advanced and widely adopted cross-platform 2D and 3D graphics API (application programming interface).

Directx 11 (opengl 4.4)