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As a standalone, it is the equivalent of Lightroom: converting raw format then do basic editing on it, then save the result to JPEG, PNG or other popular formats, and also do basic editing on JPEG images from your camera. Those wanting to learn more about Rusticl in Mesa 22.3 can see Karol's presentation embedded below as well as the associated slide deck.As schumaml told it, Darktable is a raw file decoder, and, if you use it as a plug-in, it will do the same as Camera Raw for Photoshop: converting raw files into a format like TIFF that can be edited in Gimp. Targeting the C++ single-source SYCL standard is interesting especially with Intel embracing SYCL heavily now for cross-vendor GPU acceleration with oneAPI. Karol is working on a number of improvements including the reduction of the kernel launch overhead, improving GPU utilization, more optional OpenCL features, and possibly supporting SYCL in the future. Rusticl supports OpenCL images and is working with OpenCL-accelerated software like The GIMP, Darktable, and others.

Rusticl is OpenCL conformant for Intel 12th Gen (Xe) graphics on Iris and with the RadeonSI driver for modern AMD GPUs. Karol characterized this Rust-learning experience by writing Rusticl as a "very pleasant developing experience" and praises Rust's thread and memory safety design. Rusticl is much better off than the old "Clover" Gallium3D driver that's been in Mesa for a decade but has few users and poor software compatibility. Much of the history will be familiar to Phoronix readers while some of the key takeaways from the talk included: Yesterday at the X.Org Developers' Conference (XDC 2022), Karol Herbst talked about this newly-merged Mesa driver. I've been quite excited for Rusticl and its swift progress over the past several months.

Karol Herbst of Red Hat who has led Rusticl development presented this week in Minnesota on this promising cross-vendor OpenCL implementation that may also support SYCL in the future. This is also the first Rust-written component within the Mesa code-base.

Merged last month into Mesa 22.3 was Rusticl as a Rust-written OpenCL implementation for Gallium3D that is beginning to work with the open-source Radeon Linux driver, the Intel "Iris" Gallium3D driver, and others.