delta/go-git.git/src/image/draw/bench_test.go, branch dev.inline github.com: golang/go image/draw: optimize drawFillOver as drawFillSrc for opaque fills. 2016-09-09T01:17:26+00:00 Nigel Tao nigeltao@golang.org 2016-07-14T00:51:30+00:00 f782a7e075d049979c67cdc72b6fb38fac36fdad Benchmarks are much better for opaque fills and slightly worse on non opaque fills. I think that on balance, this is still a win. When the source is uniform(color.RGBA{0x11, 0x22, 0x33, 0xff}): name old time/op new time/op delta FillOver-8 966µs ± 1% 32µs ± 1% -96.67% (p=0.000 n=10+10) FillSrc-8 32.4µs ± 1% 32.2µs ± 1% ~ (p=0.053 n=9+10) When the source is uniform(color.RGBA{0x11, 0x22, 0x33, 0x44}): name old time/op new time/op delta FillOver-8 962µs ± 0% 1018µs ± 0% +5.85% (p=0.000 n=9+10) FillSrc-8 32.2µs ± 1% 32.1µs ± 0% ~ (p=0.148 n=10+10) Change-Id: I52ec6d5fcd0fbc6710cef0e973a21ee7827c0dd9 Reviewed-on: https://go-review.googlesource.com/28790 Reviewed-by: David Crawshaw <crawshaw@golang.org> 
Benchmarks are much better for opaque fills and slightly worse on non
opaque fills. I think that on balance, this is still a win.

When the source is uniform(color.RGBA{0x11, 0x22, 0x33, 0xff}):
name        old time/op  new time/op  delta
FillOver-8   966µs ± 1%    32µs ± 1%  -96.67%  (p=0.000 n=10+10)
FillSrc-8   32.4µs ± 1%  32.2µs ± 1%     ~      (p=0.053 n=9+10)

When the source is uniform(color.RGBA{0x11, 0x22, 0x33, 0x44}):
name        old time/op  new time/op  delta
FillOver-8   962µs ± 0%  1018µs ± 0%  +5.85%   (p=0.000 n=9+10)
FillSrc-8   32.2µs ± 1%  32.1µs ± 0%    ~     (p=0.148 n=10+10)

Change-Id: I52ec6d5fcd0fbc6710cef0e973a21ee7827c0dd9
Reviewed-on: https://go-review.googlesource.com/28790
Reviewed-by: David Crawshaw <crawshaw@golang.org>
image/draw: fix double-draw when the dst is paletted. 2015-07-03T03:08:40+00:00 Nigel Tao nigeltao@golang.org 2015-07-03T01:34:18+00:00 40a1516a098b9843e2d3e5ee2b9471a57d6f2470 The second (fallback) draw is a no-op, but it's a non-trivial amount of work. Fixes #11550. benchmark old ns/op new ns/op delta BenchmarkPaletted-4 16301219 7309568 -55.16% Change-Id: Ic88c537b2b0c710cf517888f3dd15cb702dd142f Reviewed-on: https://go-review.googlesource.com/11858 Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org> 
The second (fallback) draw is a no-op, but it's a non-trivial amount of work.

Fixes #11550.

benchmark               old ns/op     new ns/op     delta
BenchmarkPaletted-4     16301219      7309568       -55.16%

Change-Id: Ic88c537b2b0c710cf517888f3dd15cb702dd142f
Reviewed-on: https://go-review.googlesource.com/11858
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
image/draw: add a fast path for Gray src images. 2015-02-28T21:43:39+00:00 Nigel Tao nigeltao@golang.org 2015-02-28T04:46:01+00:00 c20323d2bb44146c49f71f583a1f4a089360d062 Grayscale PNG and JPEG images are not uncommon. We should have a fast path. Also add a benchmark for the recently added CMYK fast path. benchmark old ns/op new ns/op delta BenchmarkGray 13960348 324152 -97.68% Change-Id: I72b5838c8c3d1f2d0a4536a848e020e80b10c0f7 Reviewed-on: https://go-review.googlesource.com/6237 Reviewed-by: Rob Pike <r@golang.org> 
Grayscale PNG and JPEG images are not uncommon. We should have a fast path.

Also add a benchmark for the recently added CMYK fast path.

benchmark                    old ns/op     new ns/op     delta
BenchmarkGray                13960348      324152        -97.68%

Change-Id: I72b5838c8c3d1f2d0a4536a848e020e80b10c0f7
Reviewed-on: https://go-review.googlesource.com/6237
Reviewed-by: Rob Pike <r@golang.org>
build: move package sources from src/pkg to src 2014-09-08T04:08:51+00:00 Russ Cox rsc@golang.org 2014-09-08T04:08:51+00:00 c007ce824d9a4fccb148f9204e04c23ed2984b71 Preparation was in CL 134570043. This CL contains only the effect of 'hg mv src/pkg/* src'. For more about the move, see golang.org/s/go14nopkg. 
Preparation was in CL 134570043.
This CL contains only the effect of 'hg mv src/pkg/* src'.
For more about the move, see golang.org/s/go14nopkg.