OpenGL 4.2 Is Now Complete In Core Mesa!
The individual hardware drivers still have varying levels to go in implementing support, but core Mesa is now at 100% for the OpenGL 4.2 specification, as detailed at MesaMatrix.net.
The last GL 4.2 extension to be implemented was ARB_shader_image_load_store that was done by Intel.
Intel now implements all OpenGL 4.2 extensions but still has various extensions of GL 4.0 and GL 4.1 that must first be finished up... Meanwhile, the AMD and Nouveau/NVIDIA drivers are largely blocked by GL_ARB_shader_atomic_counters and GL_ARB_shader_atomic_counters support.
This is quite exciting given that in Mesa 10.6, OpenGL 3.3 is exposed. However, the past few weeks there's been a lot of new code landing in Mesa with reaching OpenGL 4.0 and then OpenGL 4.1 and now even OpenGL 4.2 all in the course of one release cycle.
This next release is known as Mesa 11.0. This new version was expected in September but given that the code hasn't branched yet and who knows if it will stay open longer for more GL 4.0~4.1 extensions to get scratched off by Intel and GL 4.2 for RadeonSI/NVC0. We're also still waiting to see AMDGPU support land in mainline Mesa.
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