Mesa 17.0.1 says OpenGL Core 4.5 even though my Intel HD 520 Graphics Card supports only 4.4

问题

When I query some OpenGL info then I get the following statements:

Vendor: Intel Open Source Technology Center
WindowManager: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2) 
OpenGL version: 4.5 (Core Profile) Mesa 17.0.1
GLSL version: 4.50

But my laptop CPU/GPU Intel 6200U with Intel HD 520 (Ubuntu 17.04) supports according to Intel Product Specification only OpenGL 4.4.

Can anybody say something about this? Is the OpenGL query wrong? Thanks

回答1:

If you are using the open source driver on non-Windows platforms, it is very possible for it to support a higher OpenGL version than the Intel-created driver. Intel isn't exactly known for keeping their GL stuff up-to-date.

Requesting a 4.5 context in your program should prove what your currently installed drivers can provide.

来源：https://stackoverflow.com/questions/42861719/mesa-17-0-1-says-opengl-core-4-5-even-though-my-intel-hd-520-graphics-card-suppo