This is a Haskell module for GLFW OpenGL framework
(http://www.glfw.org). It provides an alternative
to GLUT for OpenGL based Haskell programs.
SOE (http://www.cs.yale.edu/homes/hudak/SOE/) now
depends on this package.
The website for this Haskell module is at Haskell Wiki site:
http://haskell.org/haskellwiki/GLFW
=======
Changes
=======
See separate file "Changlog.txt".
============
Installation
============
The package comes together with a (partial) source distribution
of GLFW v2.7.2, which is compiled and installed together with
the Haskell package.
If you already have the Haskell package cabal-install, you can
simply do "cabal install GLFW", and it will download the latest
source from HackageDB, configure, compile, and install it
automatically.
Otherwise, you may follow the standard Cabal package installation
steps:
1. To configure the module, type
runhaskell Setup.hs configure
or
runhaskell Setup.hs configure --user --prefix=DIR
if you want to install the package to your user's directory
instead of the system one (replace DIR with your own directory
choice).
2. To build the module, type
runhaskell Setup.hs build
3. To install, type
runhaskell Setup.hs install
In the process it builds all GLFW C library source code. You may
use "runhaskell Setup.hs build --verbose" to see the actual
compilation steps.
4. Optionally to build its Haddock documentation, type
runhaskell Setup.hs haddock
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NOTE
====
For Windows users, you may have to include GHC's gcc-lib directory
in your PATH environment, e.g., c:\ghc\ghc-6.8.3\gcc-lib, before
configuring the GLFW module, otherwise it'll complain about missing
program for ld.
For Linux users there is an option to link to a system wide GLFW
dynamical library instead of compilation from source. It can be
done by providing "--flags=dynamic" as an option to cabal configure
command.
For Mac users, unfortunately interactively running GLFW programs
from GHCi would result in a crash. The only sensible way is to
compile and run the program. On the other hand, it no longer
requires the enableGUI trick.
=============
Package Usage
=============
The package is tested with GHC 6.10.2 and GHC 7.0.2 on all
three platforms (Linux, Win32/MinGW, and Mac OS X). Though it may
work with older versions of GHC or even Hugs, they are not tested.
It installs a new Haskell package called "GLFW" and the actual
module to import is "Graphics.UI.GLFW". You'll need to pass
"-package GLFW" to GHC if you want to compile it.
GLFW itself is well documented (see GLFW website), and the
Haskell module API is documented via Haddock.
Not all functions are fully tested, and there are still a
few GLFW C functions missing from the Haskell module, namely
the image loading functions. They are excluded because image
handling is a separate issue, and low level buffer manipulation
would obscure their use further. Texture loading from TGA
format is supported both from file and from memory (via a
string buffer).
The Haskell module also provides basic text rendering while
GLFW doesn't. It comes from a free 8x16 font which is made
into a TGA texture, stored as a Haskell string in the file
GLFW.hs (also the reason for its big size). Text rendering
is only possible with Alpha enabled. Again, see SOE.hs from
the SOE package for sample usage.
GLFW doesn't work well with GHC threads, forkIO or threadDelay.
So avoid them if you can.
======================
Additional Information
======================
You may send your bug report and feature request to the package
maintainer: Paul H. Liu <paul@thev.net>.
Lastest GLFW development is hosted in a darcs repository. You
may obtain it by
darcs pull http://code.haskell.org/GLFW
There is also a mailinglist for GLFW deveopers at
http://projects.haskell.org/cgi-bin/mailman/listinfo/glfw
--
Last Updated: Fri Jan 20 PST 2012
