Rusticl Now Supports cl_ext_float_atomics
The Rusticl OpenCL driver now supports OpenCL 3.1 on various platforms, including RadeonSI, LLVMpipe, Zink, Intel Iris, and Apple Asahi, following the release of Mesa 26.2. The driver continues to receive improvements, with the latest achievement being the enablement of cl_ext_float_atomics for Mesa 26.3. This extension allows for atomic operations on floating point numbers in memory, initially supporting FP32 values with plans to address FP16 and FP64 support.
- ▪The Rusticl OpenCL driver supports OpenCL 3.1 on multiple platforms, including RadeonSI, LLVMpipe, Zink, Intel Iris, and Apple Asahi.
- ▪The cl_ext_float_atomics extension enables atomic operations on floating point numbers in memory, including global or device local memory.
- ▪The initial support for cl_ext_float_atomics is limited to FP32 values, with FP16 and FP64 support to be addressed in the future.
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| Publication time | Tue, 11 Aug 2026 06:13:00 -0400 |
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Rusticl Now Supports cl_ext_float_atomics Written by Michael Larabel in Mesa on 11 August 2026 at 06:13 AM EDT. Add A Comment With the recent release of Mesa 26.2 the Rusticl OpenCL driver now supports OpenCL 3.1 on RadeonSI, LLVMpipe, Zink, Intel Iris, and Apple Asahi. But the work is not over and more improvements to this Rust-based, modern OpenCL driver continue to land. The latest achievement by Karol Herbst in spearheading the Rusticl driver is now enabling cl_ext_float_atomics for Mesa 26.3. The cl_ext_float_atomics extension is for supporting atomic operations on floating point numbers in memory. Atomic operations can be done across FP16, FP32, and FP64 values in global or device local memory.
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