[GEM-dev] vertex operations / vertex_* (prev.. gem port to opengl-es - initial developments..)

[Hans-Christoph Steiner]

On Feb 4, 2012, at 11:23 AM, dmotd wrote:

> On Fri, 2012-02-03 at 17:04 +0100, IOhannes zmölnig wrote:
>> On 02/03/2012 01:53 PM, dmotd wrote:
>>> 
>>> is the Vertex code obsolete? there's a lot of references to
>>> apple/altivec which suggests that it was designed for a certain
>> 
>> i don't think there was a release ever that included the [vertex_*]
>> objectfamily.
>> as you guessed, they were developped mainly (almost: exclusively) by our
>> apple faction (chris & jamie), and have not been touched for years.
> 
> okay, i think i'm up to speed, been reading through mailing list logs
> and browsing the code, so i have a better understanding of the
> intentions of cgc and tigital with their vertex experiments.. 
> 
> it makes sense to resurrect some of vertex_* code and clean it up,
> although i'm a little hesitant about working with it directly as it has
> a pretty limited scope and the structure is a bit loose and abstracted.
> i also don't want to break anyones patches who might still be using
> their code, or require it for running legacy work.
> 
> perhaps a good compromise is to create a separate set of lower level
> vertex objects and in future wrap the vertex_* code in abstractions or a
> general purpose vertex class?
> 
> is the vtx_ prefix available, a quick scan suggests so? if so i'll start
> naming new vertex related objects thus to differentiate (and it matches
> nicely to the three letter shortening of pix).
> 
> in related news, i now have a simple vertex-array triangle interacting
> with gem manips and i can confirm that 'view' and 'perspec' messages to
> the gemwin are operational. good fun!
> 
> i'm currently thinking the best way to replace basic geos is to wrap a
> vtx_array/draw procedure in a pd abstraction instead of hard coded
> objects. the abstractions could be included using autotools when a
> combination of --disable-Geos and --enbable-Vertex are set. any thoughts
> or am i being short sighted?
> 
> cheers!
> dmotd
> 
> ps.. i'll cleanup the code tomorrow or monday and push to github. still
> haven't tested a qemu environment either, but both tasks should be good
> motivation for the other.

Sounds like a good idea.  From what I know, I don't think that the vertex objects ever were included in any binary release, so anyone who ever used them would have had to build them from source.

.hc

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