Method create_subbuffer

include/boost/compute/buffer.hpp:167–189

Creates a new buffer out of this buffer. The new buffer is a sub region of this buffer. \p flags The mem_flags which should be used to create the new buffer \p origin The start index in this buffer \p size The size of the new sub buffer \see_opencl_ref{clCreateSubBuffer} \opencl_version_warning{1,1}

    ///
    /// \opencl_version_warning{1,1}
    buffer create_subbuffer(cl_mem_flags flags, size_t origin,
                            size_t size)
    {
        BOOST_ASSERT(origin + size <= this->size());
        BOOST_ASSERT(origin % (get_context().
                               get_device().
                               get_info<CL_DEVICE_MEM_BASE_ADDR_ALIGN>() / 8) == 0);
        cl_int error = 0;

        cl_buffer_region region = { origin, size };

        cl_mem mem = clCreateSubBuffer(m_mem,
                                       flags,
                                       CL_BUFFER_CREATE_TYPE_REGION,
                                       &region,
                                       &error);

        if(!mem){
            BOOST_THROW_EXCEPTION(opencl_error(error));
        }

        return buffer(mem, false);
    }
  #endif // CL_VERSION_1_1
};