Hi Alessandro,
Try my bumpmapping sample from
http://www.fileden.com/files/2007/9/10/1423182/BumpMapping.rar
Hope this helps.
Ümit Uzun
2009/10/30 alessandro terenzi <a.tere...@gmail.com>
> I'm trying to use the TangentSpaceGenerator in order to apply a bump
> mapping shader, but I cannot manage it to work properly. Having looked also
> at the osgFX::BumpMapping effect, I used the visitor defined in BumpMapping
> in order to find all the geodes and apply TangentSpaceGenerator on them, but
> if I save the model to disk just before and after the generation has been
> applied, I notice that in the .osg the arrays supposed to contain normals,
> tangents and binormals are empty...here is the only part that is different
> among the two .osg:
>
> VertexAttribBinding 1 PER_VERTEX
> VertexAttribNormalize 1 FALSE
> VertexAttribArray 1 Vec4Array 0
> {
> }
> VertexAttribBinding 6 PER_VERTEX
> VertexAttribNormalize 6 FALSE
> VertexAttribArray 6 Vec4Array 0
> {
> }
> VertexAttribBinding 7 PER_VERTEX
> VertexAttribNormalize 7 FALSE
> VertexAttribArray 7 Vec4Array 0
> {
> }
>
> 6 is supposed to be the TU of the tangent, 7 is for binormal attributes and
> 1 for the normal map textures. The model have textures coordinates set for
> TU 0 that is associated to the diffuse map.
>
> Maybe I'm missing some steps to setup properly everything...
>
> Thanks in advance. Kind regards.
> Alessandro
>
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