AcquireOpenCLKernel 1551 magick/opencl.c cl_kernel AcquireOpenCLKernel(MagickCLEnv clEnv, MagickOpenCLProgram program, const char* kernelName) AcquireOpenCLKernel 2916 magick/opencl.c MagickPrivate cl_kernel AcquireOpenCLKernel(