Merged yesterday for Mesa 25.2 is an exciting change for those still making use of vintage Radeon GPUs… OpenGL 4.6 support is now exposed for the Radeon R600g Gallium3D driver.
Thanks to the work of community open-source developer Patrick Lerda, OpenGL 4.6 is now supported on the old R600g driver with it being all plumbed into place for the Radeon HD 6900 “Cayman” and Radeon HD 5800 “Evergreen” graphics cards.
Several fixes to the R600g driver as well as implementing ARB_transform_feedback_overflow_query, ARB_shader_group_vote, ARB_shader_draw_parameters, and ARB_indirect_parameters extensions. With these bits in place, it’s suitable enabling OpenGL 4.6 for these top-end GPUs supported by the R600g driver that spans in total from supporting the Radeon HD 2000 through HD 6000 series.
Those interested in topping out their OpenGL support for these old Radeon GPUs can find all the details via this Mesa merge.
