void frameAssemble( const eq::Frames& frames )
{
eq::PixelViewport coveredPVP;
eq::Frames dbFrames;
// Make sure all frames are ready and gather some information on them
prepareFramesAndSetPvp( frames, dbFrames, coveredPVP );
coveredPVP.intersect( _channel->getPixelViewport( ));
if( dbFrames.empty() || !coveredPVP.hasArea( ))
return;
if( useDBSelfAssemble( )) // add self to determine ordering
{
eq::FrameDataPtr data = _frame.getFrameData();
_frame.clear( );
_frame.setOffset( eq::Vector2i( 0, 0 ));
data->setRange( _drawRange );
data->setPixelViewport( coveredPVP );
dbFrames.push_back( &_frame );
}
orderFrames( dbFrames, computeModelView( ));
if( useDBSelfAssemble( )) // read back self frame
{
if( dbFrames.front() == &_frame ) // OPT: first in framebuffer!
dbFrames.erase( dbFrames.begin( ));
else
{
_frame.readback( _channel->getObjectManager(),
_channel->getDrawableConfig(),
_channel->getRegions( ));
clearViewport( coveredPVP );
// offset for assembly
_frame.setOffset( eq::Vector2i( coveredPVP.x, coveredPVP.y ));
}
}
LBINFO << "Frame order: ";
for( const eq::Frame* frame : dbFrames )
LBINFO << frame->getName() << " "
<< frame->getFrameData()->getRange() << " : ";
LBINFO << std::endl;
try // blend DB frames in computed order
{
eq::Compositor::blendFrames( dbFrames, _channel, 0 );
}
catch( const std::exception& e )
{
LBWARN << e.what() << std::endl;
}
// Update draw range
for( size_t i = 0; i < dbFrames.size(); ++i )
_drawRange.merge( dbFrames[i]->getRange( ));
}
void Channel::_orderFrames( eq::Frames& frames )
{
eq::Matrix4f modelviewM; // modelview matrix
eq::Matrix3f modelviewITM; // modelview inversed transposed matrix
const FrameData& frameData = _getFrameData();
const eq::Matrix4f& rotation = frameData.getRotation();
if( !useOrtho( ))
_calcMVandITMV( modelviewM, modelviewITM );
orderFrames( frames, modelviewM, modelviewITM, rotation, useOrtho( ));
}
void Channel::_orderFrames( eq::Frames& frames )
{
const FrameData& frameData = _getFrameData();
const eq::Matrix4f& rotation = frameData.getRotation();
const eq::Matrix4f& modelView = useOrtho() ? eq::Matrix4f::IDENTITY :
_computeModelView();
//calculate modelview inversed transposed matrix
eq::Matrix3f modelviewITM;
eq::Matrix4f modelviewIM;
modelView.inverse( modelviewIM );
eq::Matrix3f( modelviewIM ).transpose_to( modelviewITM );
orderFrames( frames, modelView, modelviewITM, rotation, useOrtho( ));
}
