Ping? On Sun, Jan 8, 2012 at 11:53 AM, Jason Dagit <dag...@gmail.com> wrote: > = Overview/Problem = > The OpenGL libraries included in the HP are old (OpenGL 2.2.3.0) and I > would like to push for it to be updated. The problem is that the > version in the HP is quickly falling out of sync with the OpenGL > standard and version 2.2.3.0 has some serious performance issues with > floating point numbers. The situation has been languishing for too > long. I need some guidance on how to resolve the issue so that the > next HP does not suffer from this problem. > > = Background = > > As I understand it, the main problem is that starting with OpenGL > 2.3.0.0 [1], there was a refactoring of the packages that added new > dependencies. Of these, StateVar, Tensor, and ObjectName were > controversial dependencies: > > * StateVar -- Some people have objected to the module name of the > StateVar package, as it is Data.StateVar. As I understand it, there > is some concern that by having that in the HP we are encouraging > beginners to think about using state in their programs. Data.StateVar > is very general and used by several packages (opengl, openal, hipmunk) > [2], for this reason it doesn't seem to make sense to put it under the > opengl module namespace. I'd also like to point out, STRefs are > provided by the HP and allow programmers to use stateful references. > In the current module name landscape [3], those come from Data.STRef. > > * ObjectName -- ObjectName is shared between OpenGL and OpenAL so > putting it in the Graphics namespace seems a bad idea. Note: Although > Data.ObjectName seems reasonable to me, I could be convinced to roll > ObjectName back into each of those packages as it's just one type > class definition (no instances) and it's used in exactly those > packages. Plus the way the dependency is specified on hackage, > releasing an updated package will break the existing OpenGL/OpenAL > packages. > > * Tensor -- This defines some Vertex and Vector types. Data.Tensor > seems reasonable to me. It's used by OpenGL, OpenAL, and OpenVG. If > I change it I should probably coordinate with Stephen Tetley the > author of OpenVG. > > * OpenGLRaw -- As far as I know this package is fine as it is, but > simply has not been added to the HP yet. > > * GLUTRaw -- Same as OpenGLRaw. > > = Question = > > What do I need to do to get the HP to update its dependency on OpenGL? > For example, would changing Data.StateVar to Foreign.StateVar be > sufficient? Is the HP willing to accept Data.StateVar? > > Tickets have already been created for updating OpenGL [4] and adding > OpenGLRaw [5]. > > = References = > > [1] http://hackage.haskell.org/package/OpenGL-2.4.0.2 > [2] http://packdeps.haskellers.com/reverse/StateVar > [3] http://www.haskell.org/haskellwiki/Hierarchical_module_names > [4] http://trac.haskell.org/haskell-platform/ticket/158 > [5] http://trac.haskell.org/haskell-platform/ticket/167 > > > > Thank you, > Jason
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