hi,
i am trying to setup a couple of meshes which should share the same geodes
(vegetation meshes). the only difference between the meshes of same type is the
transformation and a height bias which is used by a vertex shader program.
the height bias is defined as an uniform in the vertex program. i cannot set
the uniform in the geometry's state set as the height bias must be set for
every mesh individually. so i tried to set the uniform in the matrix transform
nodes which contains the geodes. however it seems that the value of the uniform
does not arrive with right value in the vertex shader. if the uniform is set in
geodes' stateset the value is ok, though.
now my question: may i try another approach? is something wrong with setting an
uniform ina matrix transform node?
thanks for any help
boto
p.s.: here is a snippet of the osg file:
....
MatrixTransform {
DataVariance STATIC
name "Plane3505"
nodeMask 0x5
cullingActive TRUE
StateSet {
rendering_hint DEFAULT_BIN
renderBinMode INHERIT
Uniform {
name "heightbias"
type float 1 FloatArray 1
{
62.8316
}
}
}
referenceFrame RELATIVE
Matrix {
0.5 0 0 0
0 0.5 0 0
0 0 0.5 0
-0.0344534 0.0439845 -0.674881 1
}
num_children 1
Geode {
UniqueID Geode_12
DataVariance STATIC
nodeMask 0x5
cullingActive TRUE
num_drawables 1
Geometry {
....
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