Module opencl

Universal OpenCL GPU implementation, supports cards both AMD, Nvidia and Intel.

It supports all major GPU vendors, including support for multiple GPU, including support for multiple GPU vendors on the same machine at the same time.

Linux support

In all cases for OpenCL support to build (not needed in runtime), OpenCL header files and library are necessary, can be installed on Ubuntu as follows:

sudo apt-get install ocl-icd-opencl-dev

AMD

Mesa OpenCL support is not compatible for AMD GPUs, you need to install ROCm-based OpenCL ICD.

This can be done by downloading downloading and installing AMD driver installer from https://www.amd.com/en/support, installing will look something like this:

sudo dpkg -i amdgpu-install_21.50.2.50002-1_all.deb

After which you should have amdgpu-install command, use it to install OpenCL ICD as follows:

sudo amdgpu-install --no-dkms --usecase=opencl

^ will only install OpenCL ICD and will keep Open Source kernel graphics driver as it was.

Removal of all of the above is possible with:

sudo amdgpu-install --uninstall
sudo apt-get purge amdgpu-install

Nvidia

Proprietary driver with CUDA toolchain is needed, Open Source drivers are not supported.

Intel

Thankfully, for Intel GPU Open Source ICD works great:

sudo apt-get install intel-opencl-icd

Structs

OpenClBatch

Batch to be encoded on GPU

OpenClEncoder

OpenCL codec

Enums

OpenCLEncodeError

OpenCL encoding errors