void SiltEffect::SiltDrawable::drawImplementation(osg::RenderInfo& renderInfo) const
{
if (!_geometry) return;
const osg::Geometry::Extensions* extensions = osg::Geometry::getExtensions(renderInfo.getContextID(),true);
glPushMatrix();
typedef std::vector<const CellMatrixMap::value_type*> DepthMatrixStartTimeVector;
DepthMatrixStartTimeVector orderedEntries;
orderedEntries.reserve(_currentCellMatrixMap.size());
for(CellMatrixMap::const_iterator citr = _currentCellMatrixMap.begin();
citr != _currentCellMatrixMap.end();
++citr)
{
orderedEntries.push_back(&(*citr));
}
std::sort(orderedEntries.begin(),orderedEntries.end(),LessFunctor());
for(DepthMatrixStartTimeVector::reverse_iterator itr = orderedEntries.rbegin();
itr != orderedEntries.rend();
++itr)
{
extensions->glMultiTexCoord1f(GL_TEXTURE0+1, (*itr)->second.startTime);
glMatrixMode( GL_MODELVIEW );
glLoadMatrix((*itr)->second.modelview.ptr());
_geometry->draw(renderInfo);
unsigned int numVertices = osg::minimum(_geometry->getVertexArray()->getNumElements(), _numberOfVertices);
glDrawArrays(_drawType, 0, numVertices);
}
glPopMatrix();
}
void PrecipitationEffect::PrecipitationDrawable::drawImplementation(osg::RenderInfo& renderInfo) const
{
#if defined(OSG_GL_MATRICES_AVAILABLE)
if (!_geometry) return;
const osg::Geometry::Extensions* extensions = osg::Geometry::getExtensions(renderInfo.getContextID(),true);
// save OpenGL matrices
glPushMatrix();
if (_requiresPreviousMatrix)
{
renderInfo.getState()->setActiveTextureUnit(0);
glMatrixMode( GL_TEXTURE );
glPushMatrix();
}
typedef std::vector<const CellMatrixMap::value_type*> DepthMatrixStartTimeVector;
DepthMatrixStartTimeVector orderedEntries;
orderedEntries.reserve(_currentCellMatrixMap.size());
for(CellMatrixMap::const_iterator citr = _currentCellMatrixMap.begin();
citr != _currentCellMatrixMap.end();
++citr)
{
orderedEntries.push_back(&(*citr));
}
std::sort(orderedEntries.begin(),orderedEntries.end(),LessFunctor());
for(DepthMatrixStartTimeVector::reverse_iterator itr = orderedEntries.rbegin();
itr != orderedEntries.rend();
++itr)
{
extensions->glMultiTexCoord1f(GL_TEXTURE0+1, (*itr)->second.startTime);
// load cells current modelview matrix
if (_requiresPreviousMatrix)
{
glMatrixMode( GL_MODELVIEW );
glLoadMatrix((*itr)->second.modelview.ptr());
CellMatrixMap::const_iterator pitr = _previousCellMatrixMap.find((*itr)->first);
if (pitr != _previousCellMatrixMap.end())
{
// load previous frame modelview matrix for motion blurr effect
glMatrixMode( GL_TEXTURE );
glLoadMatrix(pitr->second.modelview.ptr());
}
else
{
// use current modelview matrix as "previous" frame value, cancelling motion blurr effect
glMatrixMode( GL_TEXTURE );
glLoadMatrix((*itr)->second.modelview.ptr());
}
}
else
{
glLoadMatrix((*itr)->second.modelview.ptr());
}
_geometry->draw(renderInfo);
unsigned int numVertices = osg::minimum(_geometry->getVertexArray()->getNumElements(), _numberOfVertices);
glDrawArrays(_drawType, 0, numVertices);
}
// restore OpenGL matrices
if (_requiresPreviousMatrix)
{
glPopMatrix();
glMatrixMode( GL_MODELVIEW );
}
glPopMatrix();
#else
OSG_NOTICE<<"Warning: ParticleEffect::drawImplementation(..) not fully implemented."<<std::endl;
#endif
}
