
Legendary open-source graphics driver contributor Timothy Arceri at Valve has posted 11 more patches for advancing RadeonSI's OpenGL compatibility profile support, the alternative context to the OpenGL core profile that allows mixing in deprecated OpenGL functionality. The GL compatibility profile mode is generally used by long-standing workstation software and also a small subset of Linux games.
The 11 patches work on a number of OpenGL 4.0~4.3 extensions in the compatibility profile context from FP64 support to shader sub-routines to other extensions. There are just two more OpenGL extensions to go before the OpenGL compatibility mode for RadeonSI will be able to expose OpenGL 4.4.
The OpenGL core context for RadeonSI meanwhile remains at OpenGL 4.5 while they finish up the SPIR-V bits for being able to achieve OpenGL 4.6.
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