pub const SUPPORTED_BACKENDS: [GpuBackend; 2];Expand description
Backends that can execute the optimizer kernels, in preference order.
Cuda and Rocm are absent because scirs2-core 0.6.x has no working
compute path for them; OpenCL is absent because this crate ships no
OpenCL C sources. Asking for any of those is an explicit error rather than
a silent no-op.