RadeonSI Driver Wires Up Support For 16-bit NIR Types: Benefits GLES & OpenCL
Well known open-source AMD Mesa developer Marek Olšák has landed his most recent conquest: implementing support for 16-bit NIR types within the RadeonSI Gallium3D driver along with the LLVM and ACO compiler back-ends.
Merged this week for Mesa 25.1 is support for 16-bit NIR types with this intermediate representation used by the Mesa graphics drivers. The 16-bit types for NIR works with both the AMDGPU LLVM back-end as well as the ACO back-end that is of increasing use/relevance to the RadeonSI driver too.
The 16-bit NIR type support will be particularly beneficial for OpenGL ES and Rusticl for the modern OpenCL driver. Marek explained within the nir,ac,radeonsi: enable 16-bit NIR types & mediump for ALU, MEM, LDS; allow frustum culling w/ viewport index, remove 1 modifier, prim restart fix merge request:
This 16-bit NIR support will be in Mesa 25.1 that is due to debut as stable likely by the end of May.
Merged this week for Mesa 25.1 is support for 16-bit NIR types with this intermediate representation used by the Mesa graphics drivers. The 16-bit types for NIR works with both the AMDGPU LLVM back-end as well as the ACO back-end that is of increasing use/relevance to the RadeonSI driver too.
The 16-bit NIR type support will be particularly beneficial for OpenGL ES and Rusticl for the modern OpenCL driver. Marek explained within the nir,ac,radeonsi: enable 16-bit NIR types & mediump for ALU, MEM, LDS; allow frustum culling w/ viewport index, remove 1 modifier, prim restart fix merge request:
"The main change is that this enables 16-bit NIR types and mediump lowering except shader inputs/outputs. It works with both LLVM and ACO. This will benefit OpenGL ES and Rusticl."
This 16-bit NIR support will be in Mesa 25.1 that is due to debut as stable likely by the end of May.