3 Commits

Author	SHA1	Message	Date
Nigel Tao	999c3975a8	draw: autogenerate impl.go. ... Adding fast paths for concrete dst and src image types will be follow-up changes. Change-Id: Ib23e3cc46d9c7a52ebd5eddfbad09177b0b421af Reviewed-on: https://go-review.googlesource.com/5417 Reviewed-by: Rob Pike <r@golang.org>	2015-02-24 00:55:15 +00:00
Nigel Tao	2a1231edb8	draw: factor out the Scale implementations. ... This is just a copy/paste/rename in anticipation of automatically generating fast-path code for specific dst-image types and src-image types, a la the standard library's image/draw package. Change-Id: If6385b347cb5e1d134b0ce841ef38ed4450a6fef Reviewed-on: https://go-review.googlesource.com/5252 Reviewed-by: David Symonds <dsymonds@golang.org>	2015-02-20 07:27:42 +00:00
Nigel Tao	96b77d5c7a	draw: new package, a superset of the standard library's image/draw ... package, including the ability to scale an image. Design discussion: https://groups.google.com/forum/#!topic/golang-dev/B7-OrWdheic Previous code review (when Go used hg instead of git): https://codereview.appspot.com/101670045 New benchmarks: BenchmarkScaleLargeDownNN 300 5935174 ns/op BenchmarkScaleLargeDownAB 100 14482372 ns/op BenchmarkScaleLargeDownBL 1 1383805986 ns/op BenchmarkScaleLargeDownCR 1 2724631789 ns/op BenchmarkScaleDownNN 1000 1850500 ns/op BenchmarkScaleDownAB 300 4413499 ns/op BenchmarkScaleDownBL 50 30498748 ns/op BenchmarkScaleDownCR 20 58349653 ns/op BenchmarkScaleUpNN 20 92306475 ns/op BenchmarkScaleUpAB 5 220103753 ns/op BenchmarkScaleUpBL 10 122635195 ns/op BenchmarkScaleUpCR 10 183275927 ns/op Change-Id: I69d397e68897bae024c7b330a9375fa3e7688591 Reviewed-on: https://go-review.googlesource.com/4210 Reviewed-by: Rob Pike <r@golang.org>	2015-02-17 23:20:02 +00:00