dagitj at gmail.com
Sat Feb 11 19:49:30 GMT 2012
On Sun, Jan 8, 2012 at 11:53 AM, Jason Dagit <dagitj at gmail.com> wrote:
> = Overview/Problem =
> The OpenGL libraries included in the HP are old (OpenGL 18.104.22.168) 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 22.214.171.124 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
> 126.96.36.199 , 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)
> , 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 , 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
> * 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  and adding
> OpenGLRaw .
> = References =
>  http://hackage.haskell.org/package/OpenGL-188.8.131.52
>  http://packdeps.haskellers.com/reverse/StateVar
>  http://www.haskell.org/haskellwiki/Hierarchical_module_names
>  http://trac.haskell.org/haskell-platform/ticket/158
>  http://trac.haskell.org/haskell-platform/ticket/167
> Thank you,
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