FGFS-4.1/OpenSceneGraph
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Added LOAD_AND_RETAIN_IN_UPDATE_TRAVERSAL and LOAD_AND_DISCARD_IN_UPDATE_TRAVERSAL ImageSequence::Mode's to allow for ImageSequence usage without using background paging threads, instead loading all the images on demand in the update traversal.

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This commit is contained in:
Robert Osfield
2013-01-18 16:21:17 +00:00
parent e7e517f2d0
commit a0980734ac
5 changed files with 52 additions and 5 deletions
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33
src/osg/ImageSequence.cpp
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@@ -148,6 +148,11 @@ void ImageSequence::setImage(unsigned int pos, osg::Image* image)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
_setImage(pos,image);
}
void ImageSequence::_setImage(unsigned int pos, osg::Image* image)
{
if (pos>=_imageDataList.size()) _imageDataList.resize(pos+1);
_imageDataList[pos]._image = image;
@@ -196,8 +201,8 @@ void ImageSequence::setImageToChild(int pos)
return;
}
if (_mode==PAGE_AND_DISCARD_USED_IMAGES && _previousAppliedImageIndex>=0)
bool discardOldImages = _mode==PAGE_AND_DISCARD_USED_IMAGES || _mode==LOAD_AND_DISCARD_IN_UPDATE_TRAVERSAL;
if (discardOldImages && _previousAppliedImageIndex>=0)
{
if (_previousAppliedImageIndex<pos)
{
@@ -351,6 +356,8 @@ void ImageSequence::update(osg::NodeVisitor* nv)
if (!irh) return;
bool loadDirectly = (_mode==LOAD_AND_RETAIN_IN_UPDATE_TRAVERSAL) || (_mode==LOAD_AND_DISCARD_IN_UPDATE_TRAVERSAL);
if (useDirectTimeRequest)
{
int i = osg::maximum<int>(0, int(time/_timePerImage));
@@ -358,8 +365,26 @@ void ImageSequence::update(osg::NodeVisitor* nv)
{
i = osg::minimum<int>(i, _imageDataList.size()-1);
OSG_INFO<<"Requesting file, entry="<<i<<" : _fileNames[i]="<<_imageDataList[i]._filename<<std::endl;
irh->requestImageFile(_imageDataList[i]._filename, this, i, time, fs, _imageDataList[i]._imageRequest, _readOptions.get());
if (loadDirectly)
{
OSG_NOTICE<<"Reading file, entry="<<i<<" : _fileNames[i]="<<_imageDataList[i]._filename<<std::endl;
osg::ref_ptr<osg::Image> image = irh->readImageFile(_imageDataList[i]._filename); // TODO, need _readOptions object.
if (image.valid())
{
OSG_NOTICE<<" Assigning image "<<_imageDataList[i]._filename<<std::endl;
_setImage(i, image);
setImageToChild(i);
}
else
{
OSG_NOTICE<<" Failed to read file "<<_imageDataList[i]._filename<<std::endl;
}
}
else
{
OSG_NOTICE<<"Requesting file, entry="<<i<<" : _fileNames[i]="<<_imageDataList[i]._filename<<std::endl;
irh->requestImageFile(_imageDataList[i]._filename, this, i, time, fs, _imageDataList[i]._imageRequest, _readOptions.get());
}
}
}
else