Hello Michael,
Michael Babcock wrote:
> I'm having a problem with a GLSL shader. It works fine for opaque
> objects, but transparent objects don't look right. I tracked it down to
> my use of the OpenSG uniforms OSGWorldMatrix and OSGTransInvWorldMatrix.
> It appears these variables contain garbage or out-of-date values for
> transparency sorted objects.
>
> If I setSortTrans(false) on the render action, the shader works
> correctly, but of course transparency isn't rendered correctly in this case.
>
> Any ideas why this might be the case?
very strange, I just checked the code in the RenderAction that updates
the matrices and it is the same for transparent and opaque objects. I
don't know in what context you are using this and how much work it is,
but would it be possible for you to create a small (like the testFoo.cpp
ones) program that shows the behavior ?
Alternatively, can you run your code in a debugger with a breakpoint
being set on void RenderAction::updateShader(State *state) and see if it
gets called before each object that is being rendered with your shader ?
Thanks,
Carsten
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