Intel Mesa Driver Picks Up Support For OpenGL Memory Barriers

A set of fourteen patches were published today for the Intel Mesa DRI driver for implementing glMemoryBarrier() as needed by OpenGL 4.2 and newer.

Francisco Jerez, the developer formerly associated with the Nouveau driver project that did a bunch of the early OpenCL Gallium3D work, has been working on the Intel Linux graphics driver. His latest set of patches implement glMemoryBarrier() for Intel Gen7/Gen8 graphics hardware.

GlMemoryBarrier allows for barrier ordering memory transactions. The OpenGL memory barrier support is for OpenGL 4.2 ands higher. More information is available at OpenGL.org.

Jerez posted these 14 patches for the Intel Mesa driver to the Mesa-dev mailing list. The Intel Mesa driver isn't too far out from achieving OpenGL 4.0~4.2 compliance.