You need to add a StateSet to your geometry to activate openGL blending
2007/8/29, Nicholas Yue <[EMAIL PROTECTED]>:
> Hi,
>
> I tried to modify and existing sample tet6.osg so that the 4th color
> component is lesser than 1.0.
>
> I was expecting to see some transparency in the tetrahedron but the color
> looks solid.
>
> Regards
Geode {
UniqueID Geode_0
DataVariance DYNAMIC
nodeMask 0xffffffff
cullingActive TRUE
num_drawables 1
Geometry {
DataVariance DYNAMIC
useDisplayList TRUE
useVertexBufferObjects FALSE
StateSet {
GL_BLEND ON
}
PrimitiveSets 1
{
DrawElementsUInt TRIANGLES 12
{
0 1 2 3 4 5 6 7 8 9
10 11
}
}
VertexArray Vec3Array 12
{
1 0 0
0 1 0
0 0 1
0 0 0
0 0 1
0 1 0
0 0 0
1 0 0
0 0 1
0 0 0
0 1 0
1 0 0
}
NormalBinding PER_VERTEX
NormalArray Vec3Array 4
{
0.57735 0.57735 0.57735
-1 0 0
0 -1 0
0 0 -1
}
NormalIndices UIntArray 12 {
0 0 0 1 1 1 2 2 2 3
3 3
}
ColorBinding PER_VERTEX
ColorArray Vec4Array 4
{
1 1 1 0.1
1 0 0 0.1
0 1 0 0.1
0 0 1 0.1
}
ColorIndices UIntArray 12 {
0 0 0 1 1 1 2 2 2 3
3 3
}
}
}
--
Mathieu
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