void orderFrames( eq::Frames& frames, const eq::Matrix4d& modelviewM,
const eq::Matrix3d& modelviewITM,
const eq::Matrix4f& rotation, const bool orthographic )
{
if( orthographic )
{
const bool orientation = rotation.array[10] < 0;
sort( frames.begin(), frames.end(),
orientation ? cmpRangesInc : cmpRangesDec );
return;
}
// else perspective projection
eq::Vector3d norm = modelviewITM * eq::Vector3d( 0.0, 0.0, 1.0 );
norm.normalize();
sort( frames.begin(), frames.end(), cmpRangesInc );
// cos of angle between normal and vectors from center
std::vector<double> dotVals;
// of projection to the middle of slices' boundaries
for( eq::Frames::const_iterator i = frames.begin();
i != frames.end(); ++i )
{
const eq::Frame* frame = *i;
const double px = -1.0 + frame->getRange().end*2.0;
const eq::Vector4d pS = modelviewM * eq::Vector4d( 0.0, 0.0, px , 1.0 );
eq::Vector3d pSsub( pS[ 0 ], pS[ 1 ], pS[ 2 ] );
pSsub.normalize();
dotVals.push_back( norm.dot( pSsub ));
}
const eq::Vector4d pS = modelviewM * eq::Vector4d( 0.0, 0.0,-1.0, 1.0 );
eq::Vector3d pSsub( pS[ 0 ], pS[ 1 ], pS[ 2 ] );
pSsub.normalize();
dotVals.push_back( norm.dot( pSsub ));
//check if any slices need to be rendered in reverse order
size_t minPos = std::numeric_limits< size_t >::max();
for( size_t i=0; i<dotVals.size()-1; i++ )
if( dotVals[i] > 0 && dotVals[i+1] > 0 )
minPos = static_cast< int >( i );
const size_t nFrames = frames.size();
minPos++;
if( minPos < frames.size()-1 )
{
eq::Frames framesTmp = frames;
// copy slices that should be rendered first
memcpy( &frames[ nFrames-minPos-1 ], &framesTmp[0],
(minPos+1)*sizeof( eq::Frame* ) );
// copy slices that should be rendered last, in reverse order
for( size_t i=0; i<nFrames-minPos-1; i++ )
frames[ i ] = framesTmp[ nFrames-i-1 ];
}
}
void Channel::frameReadback( const eq::uint128_t& frameID,
const eq::Frames& frames )
{
if( stopRendering() || _isDone( ))
return;
const FrameData& frameData = _getFrameData();
for( eq::FramesCIter i = frames.begin(); i != frames.end(); ++i )
{
eq::Frame* frame = *i;
// OPT: Drop alpha channel from all frames during network transport
frame->setAlphaUsage( false );
if( frameData.isIdle( ))
frame->setQuality( eq::Frame::BUFFER_COLOR, 1.f );
else
frame->setQuality( eq::Frame::BUFFER_COLOR, frameData.getQuality());
if( frameData.useCompression( ))
frame->useCompressor( eq::Frame::BUFFER_COLOR, EQ_COMPRESSOR_AUTO );
else
frame->useCompressor( eq::Frame::BUFFER_COLOR, EQ_COMPRESSOR_NONE );
}
eq::Channel::frameReadback( frameID, frames );
}
void Channel::frameAssemble( const eq::uint128_t& frameID,
const eq::Frames& frames )
{
if( stopRendering( ))
return;
if( _isDone( ))
return;
Accum& accum = _accum[ lunchbox::getIndexOfLastBit( getEye()) ];
if( getPixelViewport() != _currentPVP )
{
accum.transfer = true;
if( accum.buffer && !accum.buffer->usesFBO( ))
{
LBWARN << "Current viewport different from view viewport, "
<< "idle anti-aliasing not implemented." << std::endl;
accum.step = 0;
}
eq::Channel::frameAssemble( frameID, frames );
return;
}
// else
accum.transfer = true;
for( eq::Frames::const_iterator i = frames.begin(); i != frames.end(); ++i )
{
eq::Frame* frame = *i;
const eq::SubPixel& curSubPixel = frame->getSubPixel();
if( curSubPixel != eq::SubPixel::ALL )
accum.transfer = false;
accum.stepsDone = LB_MAX( accum.stepsDone, frame->getSubPixel().size *
frame->getPeriod( ));
}
applyBuffer();
applyViewport();
setupAssemblyState();
try
{
eq::Compositor::assembleFrames( frames, this, accum.buffer );
}
catch( const co::Exception& e )
{
LBWARN << e.what() << std::endl;
}
resetAssemblyState();
}
void orderFrames( eq::Frames& frames, const Matrix4f& modelView )
{
LBASSERT( !_channel->useOrtho( ));
// calculate modelview inversed+transposed matrix
Matrix3f modelviewITM;
Matrix4f modelviewIM;
modelView.inverse( modelviewIM );
Matrix3f( modelviewIM ).transpose_to( modelviewITM );
Vector3f norm = modelviewITM * Vector3f( 0.0f, 0.0f, 1.0f );
norm.normalize();
std::sort( frames.begin(), frames.end(), cmpRangesInc );
// cos of angle between normal and vectors from center
std::vector<double> dotVals;
// of projection to the middle of slices' boundaries
for( const eq::Frame* frame : frames )
{
const double px = -1.0 + frame->getRange().end*2.0;
const Vector4f pS = modelView * Vector4f( 0.0f, 0.0f, px, 1.0f );
Vector3f pSsub( pS[ 0 ], pS[ 1 ], pS[ 2 ] );
pSsub.normalize();
dotVals.push_back( norm.dot( pSsub ));
}
const Vector4f pS = modelView * Vector4f( 0.0f, 0.0f, -1.0f, 1.0f );
eq::Vector3f pSsub( pS[ 0 ], pS[ 1 ], pS[ 2 ] );
pSsub.normalize();
dotVals.push_back( norm.dot( pSsub ));
// check if any slices need to be rendered in reverse order
size_t minPos = std::numeric_limits< size_t >::max();
for( size_t i=0; i<dotVals.size()-1; i++ )
if( dotVals[i] > 0 && dotVals[i+1] > 0 )
minPos = static_cast< int >( i );
const size_t nFrames = frames.size();
minPos++;
if( minPos < frames.size()-1 )
{
eq::Frames framesTmp = frames;
// copy slices that should be rendered first
memcpy( &frames[ nFrames-minPos-1 ], &framesTmp[0],
(minPos+1)*sizeof( eq::Frame* ) );
// copy slices that should be rendered last, in reverse order
for( size_t i=0; i<nFrames-minPos-1; i++ )
frames[ i ] = framesTmp[ nFrames-i-1 ];
}
}
void Channel::frameReadback( const eq::uint128_t& frameID,
const eq::Frames& frames )
{
// Drop depth buffer flag from all output frames
const FrameData& frameData = _getFrameData();
for( eq::FramesCIter i = frames.begin(); i != frames.end(); ++i )
{
eq::Frame* frame = *i;
frame->setQuality( eq::Frame::BUFFER_COLOR, frameData.getQuality());
frame->disableBuffer( eq::Frame::BUFFER_DEPTH );
}
eq::Channel::frameReadback( frameID, frames );
}