Re-enable register-based filter and pre-calculated pixel steps for performance.
Re-enable register-based filter and pre-calculated pixel steps for performance.

Time to move on from the sixtap filters, maybe do the bilinear, and focus on CL.

awatry/libvpx.opencl,awatry/libvpx.opencl,awatry/libvpx.opencl,awatry/libvpx.opencl