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The Go programming language
13f08cd807
On my laptop, I had an 800x600 jpeg and an 800x600 png (with transparency). I timed how long it took to draw each image onto an equivalently sized, zeroed RGBA image. Previously, the jpeg took 75ms and the png took 70ms, going through the medium-fast path, i.e. func drawRGBA in draw.go. After this CL, the jpeg took 14ms, and the png took 21ms with the Over operator and 12ms with the Src operator. It's only a rough estimate basd on one image file, but it should give an idea of the order of magnitude of improvement. R=rsc, r CC=adg, golang-dev https://golang.org/cl/4468044 |
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This is the source code repository for the Go programming language.
For documentation about how to install and use Go,
visit http://golang.org/ or load doc/install.html in your web browser.
After installing Go, you can view a nicely formatted
doc/install.html by running godoc --http=:6060
and then visiting http://localhost:6060/doc/install.html.
Unless otherwise noted, the Go source files are distributed
under the BSD-style license found in the LICENSE file.
--
Binary Distribution Notes
If you have just untarred a binary Go distribution, you need to set
the environment variable $GOROOT to the full path of the go
directory (the one containing this README). You can omit the
variable if you unpack it into /usr/local/go, or if you rebuild
from sources by running all.bash (see doc/install.html).
You should also add the Go binary directory $GOROOT/bin
to your shell's path.
For example, if you extracted the tar file into $HOME/go, you might
put the following in your .profile:
export GOROOT=$HOME/go
export PATH=$PATH:$GOROOT/bin
See doc/install.html for more details.