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Matthew Flatt 9cb646bbd2 racket/gui cocoa: use CGLayer for canvas bitmaps 
The backing bitmap for a canvas is created as a CGLayer, which can
make screen refresh much faster. Also, calling the `make-bitmap` method
of `canvas%` produces a CGLayer-based bitmap, so drawing those bitmaps
to a fast context can be fast.

The improvement particularly helps with Retina displays, making
DrRacket more responsive and increasing the potential frame rate
of Slideshow.
2013-11-23 11:38:47 -07:00
native-pkgs@5f391155f2 restore "native-pkgs" commit 2013-09-08 06:53:13 -06:00
pkgs racket/gui cocoa: use CGLayer for canvas bitmaps 2013-11-23 11:38:47 -07:00
racket reflow release notes for v6.0 2013-11-22 14:59:35 -07:00
.gitattributes Don't include git files in archives. 2010-05-12 01:46:05 -04:00
.gitignore Add add-on to .gitignore. 2013-07-04 11:51:53 -04:00
.gitmodules access "native-pkgs" as a git submodule 2013-07-26 22:36:20 -06:00
.mailmap mailmap updates & fixes. 2013-04-03 18:10:22 -04:00
.travis.yml fix net tests on travis 2013-10-15 22:06:59 -04:00
INSTALL.txt make installers: make the server listen only to "localhost" by default 2013-10-19 07:56:00 -06:00
Makefile make installers: install required packages, first 2013-11-22 07:26:43 -07:00
README.txt include license with each package 2013-08-31 06:25:31 -06:00

README.txt 

This is the source code for the main Racket distribution.  See
"INSTALL.txt" for information on building Racket.

License
-------

Racket
Copyright (c) 2010-2013 PLT Design Inc.

Racket is distributed under the GNU Lesser General Public License
(LGPL).  This means that you can link Racket into proprietary
applications, provided you follow the rules stated in the LGPL.  You can
also modify Racket; if you distribute a modified version, you must
distribute it under the terms of the LGPL, which in particular means
that you must release the source code for the modified software.  See
racket/src/COPYING_LESSER.txt for more information.