Hi,

On Thu, 2011-03-24 at 08:22 +0100, Josef Grunig wrote:
> Hi Gerrit,
> 
> > Can you try the testSHLXXXX_shaderprog examples just to be sure nothing 
> > crept
> > into the compat implementation. I had a attribute aliasing problem on OSX 
> > recently.
> 
>  testSHLXXXX_shaderprog is not working too,
> 
> > Oh and could you try the testSHLGeomteryShader example, that was the only 
> > one
> > working on OSX interestingly.
> 
> Uhm, I don't have the geometry_shader4 extension, so its crashing at
> first render.
> 
> I noticed that the shader works by adding the material directly on a
> Polygon Foreground instead of the sphere.
> Quite strange...

not quite ;), the opposite is true, it seems the attribute aliasing goes
wrong and one can use the like of gl_Vertex in the shader only if one
does not use the Attrib calls to pass vertex arrays. I'll see if I can
find a quick solution as I won't have the full attrib mapping ready for
some time. Unfortunately I does not seem as easy as on the OSX side ;(.

> As I come from 1.8 I used automatically the SHLChunk. Is this Chunk to
> be considered deprecated? Which is it's substitute?

yes, the replacements are OSGShaderProgramChunk and
OSGShaderProgramVariableChunk. The SimpleSHLChunk is a basic
wrapper around them. The corresponding new tests end on
_shaderprog.cpp


kind regards
  gerrit


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