[gl4java-usergroup] RE :OpenGL Extensions

[<aco...@mi...>]

>Hmm I hadn't thought about the prefix stuff yet. Good point.
>You could call your object 'gl' which gives you gl.ProgramEnv... :)
>The only way I know to dynamically get all these methods into one
object
>is to use Proxy, but I don't think this would be very efficient.
>So, so far we have:
>+ Small memory saving
>+ No noop methods
>+ Flexible extensibility
>- Prefixes before methods


If you have 3 extensions, you can't instantiate the 3 classes under the
same name "gl" if this what you mean. So it remains a problem.


Alban Cousini=E9 wrote:
> Hi Pepijn,
>=20
> This mechanism is interesting as it is allowing to save memory while
> avaoiding loading the extensions not needed. The only thing that
annoys
> me is the fact that we would have to prefix every call to a
> vertexProgram function by the variable name "vertProg.", so in your
> sample, we'd have code like :
> vertProg.ProgramEnvParameter4dvARB(args);
> On the other hand, the memory saved (a few Kilobytes) is not very
> interesting on personal computer context. On a PDA or a global phone,
> the gain would be much more interesting.
>=20
> If we are using, say, 8 different extensions, we'd have to keep in
mind
> every prefix, which is not easing the programming task. The current
> mechanism is more ergonomic because you always prefix your function
> calls by "gl" and nothing else, thus you don't have to remember these
> extensions class names.
>=20
> Ideally, removing any prefix would be the best solution as it would
> allow easier porting from c++ OpenGL code (that has no prefix) to
> gl4java code, but I don't think this is possible with Java, as a class
> cannot be declared static (except if it is an inner class : see
article
> http://www.javaworld.com/javaworld/javaqa/1999-08/01-qa-static2.html)
>=20
> Anyone have any idea if this could possibly be achieved?
>=20
> Alban