Mesa 23.3 Merges Initial Support For RDNA3 Refresh "GFX11.5" Graphics

For going along with the initial GFX11.5 kernel support that is set to be introduced in Linux 6.7 along with other portions of new AMD Radeon graphics IP enablement, this quarter's Mesa 23.3 release will also bring initial GFX11.5 graphics support for the RadeonSI Gallium3D driver.

Merged overnight was AMD's code around initial GFX11.5 support for the RadeonSI Gallium3D driver and other common Mesa code. With GFX11.5 the enablement in Mesa comes in at 13,907 lines of new code but some 13,794 lines of that ends up being a JSON file that documents the registers... The actual new enablement code for GFX11.5 within Mesa is quite small and mostly about adding GFX11.5 to proceed along the existing GFX11.0 / Navi 3x driver code paths. Following the common AMD code elements and RadeonSI changes, the RADV driver support for GFX11.5 should similarly be very similar and non-invasive.

It's believed that GFX11.5 will be "RDNA3 refresh" that is rumored to be updated RDNA3 graphics to appear with next-generation AMD APUs/SoCs. There previously were rumors of an RDNA3 refresh for discrete graphics cards of the Radeon RX 7000 series, but newer rumors point to those being cancelled.

See this merge request for the now-merged GFX11.5 support code within Mesa 23.3. Wherever GFX11.5 ends up being used, it's nice -- as standard these days -- for seeing this open-source Linux graphics driver support coming together upstream pre-launch.