[GEM-dev] Compiling Vertex Array stuff under OSX

[James Tittle II]

On Oct 14, 2004, at 1:10 PM, B. Bogart wrote:

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> Hey all,
>
> I'm trying to compile the vertex branch on OSX. I've simply added the 
> src/vertex
> files to the project and compile when without errors. Upon loading Gem 
> I get the
> following unresolved symbols:
>
> __ZN9GemVertex11setModifiedEv
> __ZN9GemVertexC2Ev
> __ZN9GemVertexD2Ev
> _glBindBufferARB
> _glBufferDataARB
> _glDeleteBuffersARB
> _glGenBuffersARB
>
> I'm using OSX on 10.3.2 (Because I tried getting Gem to work on a 
> french 1GHz
> powerbook and I could not get pix_video to work, only sending a green 
> texture.
> It works fine in other applications though.

ok, originally the vertex_array stuff was written with VAO in mind:  
that is slow, so at the moment the vertex array stuff is hacked to use 
VBO's (way faster), which aren't officially in OpenGL.framework 
(someone screwed up at Apple)...however, there is a glVBOext.h that I 
think is in cvs that provides the necessary defines to get the VBO 
stuff working...

...unfortunately, I forget what the minimum OSX is that exposed the VBO 
stuff in the driver:  aha, quick review of my mail says 10.3.4+...so I 
highly suggest an update!  I'm currently using 10.3.5 with no problem, 
but really am looking forward to 10.3.6 because it may solve some 
nagging OpenGL problems...

...lastly, there is a Base/GemVertex.cpp that you also need...better to 
just recheck out the cvs with the vertex_array tag...

> Also I can't get pix_film to load a animation compressed QT. It just 
> send a
> green texture. QT opens it fine directly. These last two issues are 
> based on the
> gem binary on taproot.dyndns.org/~cgc

...don't know what's going on here...?  Personally haven't tried any 
animation compression in 10 years :-)  However it is quicktime 
supported, so shouldn't be a big deal, unless it's just a huge data 
rate...another thing to  consider is whether or not the hardware 
supports yuv texturing, and that the movie is opened in YUV mode...

l8r,
jamie