void Channel::frameAssemble( const eq::uint128_t& frameID )
{
const bool composeOnly = (_drawRange == eq::Range::ALL);
eq::FrameData* data = _frame.getData();
_startAssemble();
const eq::Frames& frames = getInputFrames();
eq::PixelViewport coveredPVP;
eq::Frames dbFrames;
eq::Zoom zoom( eq::Zoom::NONE );
// Make sure all frames are ready and gather some information on them
for( eq::Frames::const_iterator i = frames.begin();
i != frames.end(); ++i )
{
eq::Frame* frame = *i;
{
eq::ChannelStatistics stat( eq::Statistic::CHANNEL_FRAME_WAIT_READY,
this );
frame->waitReady( );
}
const eq::Range& range = frame->getRange();
if( range == eq::Range::ALL ) // 2D frame, assemble directly
eq::Compositor::assembleFrame( frame, this );
else
{
dbFrames.push_back( frame );
zoom = frame->getZoom();
_expandPVP( coveredPVP, frame->getImages(), frame->getOffset() );
}
}
coveredPVP.intersect( getPixelViewport( ));
if( dbFrames.empty( ))
{
resetAssemblyState();
return;
}
// calculate correct frames sequence
if( !composeOnly && coveredPVP.hasArea( ))
{
_frame.clear();
data->setRange( _drawRange );
dbFrames.push_back( &_frame );
}
_orderFrames( dbFrames );
// check if current frame is in proper position, read back if not
if( !composeOnly )
{
if( _bgColor == eq::Vector3f::ZERO && dbFrames.front() == &_frame )
dbFrames.erase( dbFrames.begin( ));
else if( coveredPVP.hasArea())
{
eq::Window::ObjectManager* glObjects = getObjectManager();
_frame.setOffset( eq::Vector2i( 0, 0 ));
_frame.setZoom( zoom );
data->setPixelViewport( coveredPVP );
_frame.readback( glObjects, getDrawableConfig( ));
clearViewport( coveredPVP );
// offset for assembly
_frame.setOffset( eq::Vector2i( coveredPVP.x, coveredPVP.y ));
}
}
// blend DB frames in order
try
{
eq::Compositor::assembleFramesSorted( dbFrames, this, 0,
true /*blendAlpha*/ );
}
catch( eq::Exception e )
{
EQWARN << e << std::endl;
}
resetAssemblyState();
// Update range
_drawRange = getRange();
}
void Channel::frameAssemble( const eq::uint128_t&, const eq::Frames& frames )
{
_startAssemble();
eq::PixelViewport coveredPVP;
eq::ImageOps dbImages;
eq::Zoom zoom( eq::Zoom::NONE );
// Make sure all frames are ready and gather some information on them
for( eq::Frame* frame : frames )
{
{
eq::ChannelStatistics stat( eq::Statistic::CHANNEL_FRAME_WAIT_READY,
this );
frame->waitReady( );
}
for( eq::Image* image : frame->getImages( ))
{
eq::ImageOp op( frame, image );
op.offset = frame->getOffset();
const eq::Range& range = image->getContext().range;
if( range == eq::Range::ALL ) // 2D frame, assemble directly
eq::Compositor::assembleImage( op, this );
else
{
dbImages.emplace_back( op );
zoom = frame->getZoom();
coveredPVP.merge( image->getPixelViewport() + frame->getOffset());
}
}
}
if( dbImages.empty( ))
{
resetAssemblyState();
return;
}
// calculate correct image sequence
const bool dbCompose = _image.getContext().range != eq::Range::ALL;
coveredPVP.intersect( getPixelViewport( ));
if( dbCompose && coveredPVP.hasArea( ))
{
eq::ImageOp op;
op.image = &_image;
op.buffers = eq::Frame::BUFFER_COLOR;
op.zoom = zoom;
op.offset = eq::Vector2i( coveredPVP.x, coveredPVP.y );
dbImages.emplace_back( op );
}
_orderImages( dbImages );
// check if current image is in proper position, read back if not
if( dbCompose )
{
if( _bgColor == eq::Vector3f() && dbImages.front().image == &_image)
dbImages.erase( dbImages.begin( ));
else if( coveredPVP.hasArea())
{
eq::util::ObjectManager& glObjects = getObjectManager();
eq::PixelViewport pvp = getRegion();
pvp.intersect( coveredPVP );
// Update range
eq::Range range( 1.f, 0.f );
for( const eq::ImageOp& op : dbImages )
{
const eq::Range& r = op.image->getContext().range;
range.start = std::min( range.start, r.start );
range.end = std::max( range.end, r.end );
}
eq::RenderContext context = _image.getContext();
context.range = range;
if( _image.startReadback( eq::Frame::BUFFER_COLOR, pvp, context,
zoom, glObjects ))
{
_image.finishReadback( glewGetContext( ));
}
clearViewport( coveredPVP );
}
}
glEnable( GL_BLEND );
LBASSERT( GLEW_EXT_blend_func_separate );
glBlendFuncSeparate( GL_ONE, GL_SRC_ALPHA, GL_ZERO, GL_SRC_ALPHA );
eq::Compositor::blendImages( dbImages, this, 0 );
resetAssemblyState();
}