Resize planes in parallel
Resize planes in parallel

We match theorical speed-up of 1.5x on 420 content

benchmark                   old MB/s     new MB/s  speedup
BenchmarkBilinearUp           124.71       124.56    1.00x
BenchmarkBilinearUp-2         124.46       186.69    1.50x
BenchmarkBilinearUp-4         123.96       187.36    1.51x
BenchmarkBicubicUp             87.91        89.48    1.02x
BenchmarkBicubicUp-2           88.71       133.49    1.50x
BenchmarkBicubicUp-4           87.66       134.47    1.53x
BenchmarkLanczosUp             68.81        70.27    1.02x
BenchmarkLanczosUp-2           69.24       105.08    1.52x
BenchmarkLanczosUp-4           69.27       105.29    1.52x
BenchmarkBilinearDown          25.81        25.77    1.00x
BenchmarkBilinearDown-2        25.43        38.62    1.52x
BenchmarkBilinearDown-4        25.68        38.72    1.51x
BenchmarkBicubicDown           16.71        16.69    1.00x
BenchmarkBicubicDown-2         16.67        24.92    1.49x
BenchmarkBicubicDown-4         16.69        25.03    1.50x
BenchmarkLanczosDown           12.47        12.45    1.00x
BenchmarkLanczosDown-2         12.44        18.59    1.49x
BenchmarkLanczosDown-4         12.48        18.69    1.50x

donlzx/rez,bamiaux/rez,bamiaux/rez,donlzx/rez