[MacRuby-devel] OpenGL/GLUT Bridgesupport

[Jonathan Waddilove]

Julien,

Thank you for the response. I'm not sure that ticket#520 is my problem. I don't think that the glut framework on 10.6.2 has been processed by bridge support.

I'm trying to teach myself openGL using the superbible and other web resources. To keep things simple I wanted to build the superbible examples in MacRuby - this should give me an easy to use platform for just trying to get my mind around the openGL paradigms.

I agree with John Shea that GLUT is not the way to develop a real application. But for learning and trying things out its performance is just fine.

My current thinking is to build a simple template project in MacRuby that uses a NSOpenGlView rather than GLUT. I would add boilerplate to provide animation, keyboard and mouse support (I'm thinking of using the Sojaster port of the Apple Cocoa OpenGL example as a basis).

I'd be happy to share or work jointly on these efforts with anyone who has a similar need. It would be useful if there is a web site we could use to document such work and share code. Any ideas?

  Jonathan


On 22 Jan 2010, at 16:04, Julien Jassaud wrote:

> Jonathan,
> 
> The MacRuby-Cocoa-OpenGL sample code you mention in your first post is not complete. The reason might be a Bridgesupport problem, reported in ticket #520.
> 
> I recently bought the SuperBible to better  understand the OpenGL sample code I was porting to MacRuby. What example are you trying to port ? We could maybe work on it together ?
> 
> 
> Julien
> 
> Le 22 janv. 2010 à 17:32, Jonathan Waddilove a écrit :
> 
>> John,
>> 
>> Thank you for the response. GLUT won't be my first choice but I'm trying to follow the examples in the SuperBible.
>> 
>> I'm wondering what the plan is to support all the 'standard' frameworks in MacRuby is? Should I be able to process the GLUT.framework with gen_bridge_metadata?
>> 
>> Meanwhile I will look at providing my own wrapper class as you suggest. As you say this provides a flexible way of handling any framework that lacks bridge support.
>> 
>> Many thank, Jonathan
>> 
>> On 21 Jan 2010, at 20:56, John Shea wrote:
>> 
>>> Yes as far as I know bridge support does not support GLUT.
>>> 
>>> So you (obviously) have two other options other than gen_bridge_metadata (which I gave up on after a few tries) :
>>> 
>>> - don't use GLUT - use the equivalent (set of) non GLUT openGL calls
>>> - place the GLUT calls in an ObjC class - and call out to that class from MacRuby
>>> 
>>> you might find that the second option is quite quick - i found that for some openGL calls (but not all) that dispatching to my own bridge class which then called opengl functions was quicker than going through BridgeSupport.
>>> 
>>> There are other good reasons to have your own bridge class anyway - i imagine that BridgeSupport is always going to be lagging Cocoa a bit (eg Core Animation constants), and it might just be easier allocating OpenGL texture memory in ObjC (well I still use objC for that)
>>> 
>>> HTH,
>>> J
>>> 
>>> 
>>> On Jan 20, 2010, at 8:14 PM, Jonathan Waddilove wrote:
>>> 
>>>> Hi, I'm back to using MacRuby again and I'm confused about Bridge Support.
>>>> 
>>>> I have been using the excellent sojaster port of the Cocoa OpenGL example to help develop an OpenGL playpen. However, when I started using glut calls (glutBitmapCharacter, glutStrokeString, etc) I started to get problems.
>>>> 
>>>> It seems that the OpenGL glut.framework (10.6.2) doesn't include bridge support. I've tried using gen_bridge_metadata to add bridge support but without success.
>>>> 
>>>> Should glut work in MacRuby? How does one add BridgeSupport to the Apple shipped frameworks?
>>>> 
>>>> Sorry if I have missed some very obvious step.
>>>> 
>>>> regards and thanks,  Jonathan
>>>> 
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>>> 
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