C2ME OpenCL Acceleration Module

C2ME OpenCL Acceleration Module

Experimental C2ME addon that provides hardware accelerated world generation through OpenCL. Requires the base C2ME mod. It is strongly recommended to install ScalableLux, because lighting can easily become a bottleneck.

Note

This mod requires Java 25 to function correctly, even on versions before 26.1.

World generation should have full vanilla parity in vanilla worldgen, with one exception: Biome borders may get shifted by one or two blocks in very rare cases due to the vanilla implementation being order-dependent. (In other words, this mod is as vanilla as Noisium and its forks like NoisiumForked, which also suffer from the same issue despite claiming full vanilla parity)

Usual worldgen non-determinism applies.

Currently only noise stage and biome stage are implemented. The expected performance uplift is 80+% on vanilla overworld when cpu-bound. Performance will vary depending on seeds, datapacks, etc.

Also, worldgen now include GPU driver bugs in them. Please backup your worlds before using this on existing worlds. Some worldgen mods is known to fail catastrophically. See Mod compatibility section for details.

Platform compatibility matrix

• Supported: known to be fully working in general
• Partial: known to be working with some big caveats
• Unsupported: known to be not working at all
• N/A: Not applicable because the combination doesn't exist.

| Vendor | Generation | Driver | Windows | Linux | MacOS | |----------|-------------------------------|----------------------|---------------|---------------|---------------| | NVIDIA | Maxwell and beyond | Proprietary and Open | Supported | Supported¹ | Unknown | | NVIDIA | Kepler | Proprietary | Unknown | Supported | Unknown | | NVIDIA | Older cards | Any | Unknown | Unknown | Unknown | | NVIDIA | nouveau supported GPUs | Rusticl on nouveau | N/A | Unknown | N/A | | Intel | Gen9, Gen9.5⁵ | Official² | Supported³ | Supported³ | Unknown | | Intel | Gen11, Gen12, Gen12.5⁶ | Official² | Unsupported¹² | Unsupported¹² | Unknown | | Intel | Gen12.7, Xe2, Xe3 and beyond⁷ | Official² | Supported³ | Supported³ | Unknown | | Intel | Older graphics | Official² | Unknown | Unknown | Unknown | | Intel | iris supported GPUs | Rusticl on iris | N/A | Unknown | N/A | | AMD | RDNA1 and beyond¹⁴ | Official⁸ | Supported⁹ | Supported | Unknown | | AMD | GCN | Official¹⁰ | Unsupported¹³ | Unsupported¹³ | Unknown | | AMD | radeonsi supported GPUs | Rusticl on radeonsi | N/A | Partial¹¹ | N/A | | Qualcomm | Any | Official | Unsupported¹² | Unsupported¹² | N/A | | Apple | Any | MacOS drivers | N/A | N/A | Unsupported¹² | | Apple | Any | Rusticl on asahi | N/A | Unknown | N/A |

• ¹ Works with versions published after August 10th, 2026. Extremely complex datapacks may require enableNvidiaFastCompilation to function.
• ² The official driver package on Windows. Gen9 and Gen9.5 needs up-to-date drivers:

Gen9: https://www.intel.com/content/www/us/en/download/762755/intel-6th-gen-processor-graphics-windows.html Gen9.5: https://www.intel.com/content/www/us/en/download/776137/intel-7th-10th-gen-processor-graphics-windows.html For Linux: https://github.com/intel/compute-runtime

• ³ Works with versions published after August 10th, 2026.
• ⁴ Obsolete
• ⁵ Gen9 and Gen9.5 are integrated graphics on 6th-9th gen core processors, and 10th gen non-G series core processors
• ⁶ Gen11 and Gen12, Gen12.5 here are integrated graphics in 10th G-series core processors, 11th-14th gen core processors, plus Arc DG1, Arc A-series
• ⁷ Gen12.7 refers to Meteor Lake and Arrow Lake integrated graphics.

At this point it is integrated graphics in Core Ultra 100 series and above, plus Battlemage dedicated graphic and above.

• ⁸ The official driver package on Windows. The ROCm runtime on Linux.
• ⁹ Driver versions 26.5.1 is known to always crash. Existing installations upgraded to 26.6.1+ may also crash as well.

If you are experiencing crashes on 26.6.1+, it is recommended to DDU then do a fresh installation.

• ¹⁰ The official driver package on Windows. The AMDGPU-Pro runtime on Linux.
• ¹¹ Mesa 26.1.x branch is known to work on RDNA3/4. Anything can happen with any hardware combination, including corrupted worldgen. Your millage may vary.
• ¹² Missing FP64 support
• ¹³ Driver crashes
• ¹⁴ Integrated graphics for Ryzen 7000 series and 9000 series not included. They are too slow for this task.

Any hardware not listed here are in Unknown status. Feel free to test other hardware configurations that meets the minimum requirements detailed below.

Platform compatibility matrix changelog

• August 12th, 2026: Changed "NVIDIA Maxwell and beyond", "Intel Gen9, Gen9.5, Gen12.7, Xe2, Xe3 and beyond" to Supported.

Minimum hardware requirements

• a working OpenCL 1.2+ driver
• cl_khr_fp64 support (fp64 support)