Hello Michael,
On 02/17/2011 10:58 AM, Michael Raab wrote:
> Catching the required parameters works perfectly. After that I try to
> update them each frame. What I do is to iterate over the list of
> interesting ShaderParameterPtr's and call setValue(). The code for the
> system time looks like this:
>
> if((*paramIt)->getName() == "VDTSystemTime")
> {
> ShaderParameterRealPtr p =
> ShaderParameterRealPtr::dcast((*paramIt).get());
> if( p != osg::NullFC )
> {
> beginEditCP(p, ShaderParameterReal::ValueFieldMask);
> p->setValue(systemTimeVar);
> endEditCP(p, ShaderParameterReal::ValueFieldMask);
> }
> }
>
> The code compiles and runs fine. But the parameter seems to be not
> applied to the shader.
> Do I miss something?
this looks like it should work. Can you try:
SHLChunkPtr shl; // pointer to an SHLChunk with a VDTSystemTime param
Real32 time;
shl->getUniformParameter("VDTSystemTime", time);
to verify you get the expected value?
You can also try if storing the SHLChunks that have the parameter and
then calling:
shl->setUniformParameter("VDTSystemTime", systemTimeVar);
makes a difference (i just checked that it internally does pretty much
the same as you are doing above, so I'm not sure where the problem might
be).
Cheers,
Carsetn
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