More RadeonSI Gallium3D changes worth mentioning have landed today in Mesa 25.1 Git for the open-source Linux graphics driver stack.
David Rosca working as a contractor for AMD working to improve the open-source video acceleration code has landed another round of enhancements. Merged today was ac, radeonsi/vcn: Enable tiling for video buffers. As implied given the title, tiling for video buffers is now enabled:
“This enables tiling for video buffers by default.
VAAPI frontend, VCN encode, decode and JPEG can now correctly handle tiling, so we can finally enable it. Applications at this point should also be able to correctly handle non-linear modifier when exporting surfaces.”
One notable patch as part of that worth mentioning is DCC for multi-plane formats with GFX12 hardware, a.k.a. RDNA4. Mesa 25.0 already has DCC for RDNA4 GPUs with Delta Color Compression being important for performance purposes. Now DCC with upcoming Radeon RX 9070 graphics cards also will work for multi-plane formats.
These improvements will be part of the Mesa 25.1 release due out in Q2.
