void CompoundUpdateOutputVisitor::_updateFrames(Compound* compound)
{
const Frames& outputFrames = compound->getOutputFrames();
if (outputFrames.empty())
compound->unsetInheritTask(fabric::TASK_READBACK);
const Channel* channel = compound->getChannel();
if (!compound->testInheritTask(fabric::TASK_READBACK) || !channel)
return;
for (FramesCIter i = outputFrames.begin(); i != outputFrames.end(); ++i)
{
//----- Check uniqueness of output frame name
Frame* frame = *i;
const std::string& name = frame->getName();
if (_outputFrames.find(name) != _outputFrames.end())
{
LBWARN << "Multiple output frames of the same name are unsupported"
<< ", ignoring output frame " << name << std::endl;
frame->unsetData();
continue;
}
//----- compute readback area
const Viewport& frameVP = frame->getViewport();
const PixelViewport& inheritPVP = compound->getInheritPixelViewport();
PixelViewport framePVP(inheritPVP);
framePVP.apply(frameVP);
if (!framePVP.hasArea()) // output frame has no pixels
{
LBINFO << "Skipping output frame " << name << ", no pixels"
<< std::endl;
frame->unsetData();
continue;
}
//----- Create new frame datas
// * one frame data used for each eye pass
// * data is set only on master frame data (will copy to all others)
frame->cycleData(_frameNumber, compound);
FrameData* frameData = frame->getMasterData();
LBASSERT(frameData);
LBLOG(LOG_ASSEMBLY)
<< lunchbox::disableFlush << "Output frame \"" << name << "\" id "
<< frame->getID() << " v" << frame->getVersion() + 1 << " data id "
<< frameData->getID() << " v" << frameData->getVersion() + 1
<< " on channel \"" << channel->getName() << "\" tile pos "
<< framePVP.x << ", " << framePVP.y;
//----- Set frame data parameters:
// 1) offset is position wrt destination view, used only by input frames
const bool tiled = !compound->getInputTileQueues().empty();
frameData->setOffset(tiled ? Vector2i(0, 0)
: Vector2i(framePVP.x, framePVP.y));
// 2) pvp is area within channel
framePVP.x = static_cast<int32_t>(frameVP.x * inheritPVP.w);
framePVP.y = static_cast<int32_t>(frameVP.y * inheritPVP.h);
frameData->setPixelViewport(framePVP);
// 3) image buffers and storage type
const Frame::Buffer buffers = frame->getBuffers();
frameData->setType(frame->getType());
frameData->setBuffers(buffers == Frame::Buffer::undefined
? compound->getInheritBuffers()
: buffers);
// 4) (source) render context
frameData->setContext(compound->setupRenderContext(EYE_CYCLOP));
//----- Set frame parameters:
// 1) offset is position wrt window, i.e., the channel position
if (compound->getInheritChannel() == channel)
frame->setOffset(Vector2i(inheritPVP.x, inheritPVP.y));
else
{
const PixelViewport& nativePVP = channel->getPixelViewport();
frame->setOffset(Vector2i(nativePVP.x, nativePVP.y));
}
// 2) zoom
_updateZoom(compound, frame);
//----- Commit
frame->commitData();
_outputFrames[name] = frame;
LBLOG(LOG_ASSEMBLY)
<< " buffers " << frameData->getBuffers() << " read area "
<< framePVP << " readback " << frame->getZoom() << " assemble "
<< frameData->getZoom() << lunchbox::enableFlush << std::endl;
}
}
