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
_______________________________________________
osg-users mailing list
[email protected]
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
