void ResourceLoadNode::evaluateResource()
{
void const *urlMemberData = getConstData( "url", 0 );
bool sameURL = m_fabricResourceStreamData.isURLEqualTo( urlMemberData );
bool isFirstEvalAfterLoad = m_firstEvalAfterLoad;
m_firstEvalAfterLoad = false;
if( sameURL && m_inProgress )
return;
if( sameURL && isFirstEvalAfterLoad )
return;//[JeromeCG 20111221] The data was already set asynchronously, during setResourceData, so the work is already done.
if( sameURL && (m_keepMemoryCache || m_asFile) )
{
//Set from m_fabricResourceStreamData
//[JeromeCG 20110727] Note: if m_asFile, the handle was created as "readOnly", so in theory the data is still valid.
setResourceData( NULL, false );
return;
}
// [JeromeCG 20110727] Note: we use a generation because if there was a previous uncompleted request we might receive more callbacks;
// we create a new one in parallel instead of waiting its completion.
m_streamGeneration++;
m_fabricResourceStreamData.setURL( urlMemberData );
m_fabricResourceStreamData.setMIMEType( "" );
//[JeromeCG 20120119] setDataExternalLocation: Should we care about deleting the cache file? The browser created it... can it reuse the same temp file? Maybe the user still uses it?
m_fabricResourceStreamData.setDataExternalLocation( "" );
m_fabricResourceStreamData.resizeData( 0 );
m_keepMemoryCache = false;
setResourceData( NULL, false );
m_keepMemoryCache = getContext()->getRTManager()->getBooleanDesc()->getValue( getConstData( "keepMemoryCache", 0 ) );
m_asFile = getContext()->getRTManager()->getBooleanDesc()->getValue( getConstData( "storeDataAsFile", 0 ) );
std::string url = m_fabricResourceStreamData.getURL();
if( !url.empty() )
{
m_inProgress = true;
getContext()->getIOManager()->getResourceManager()->get( url.c_str(), this, m_asFile, (void*)m_streamGeneration );
}
else
releaseFile();
}
void ResourceLoadNode::setResourceData(
char const *errorDesc,
bool notify
)
{
m_firstEvalAfterLoad = true;
std::string url = m_fabricResourceStreamData.getURL();
std::string extension = IO::GetURLExtension( url );
size_t extensionPos = url.rfind('.');
if( extensionPos != std::string::npos )
extension = url.substr( extensionPos+1 );
else
{
std::string mimeType = m_fabricResourceStreamData.getMIMEType();
extensionPos = mimeType.rfind('/');
if( extensionPos != std::string::npos )
extension = mimeType.substr( extensionPos+1 );
}
m_fabricResourceStreamData.setExtension( extension );
void const *prevResourceData = getConstData( "resource", 0 );
if( !m_fabricResourceStreamData.isDataEqualTo( prevResourceData ) || !m_fabricResourceStreamData.isDataExternalLocationEqualTo( prevResourceData ) )
{
void *resourceDataMember = getMutableData( "resource", 0 );
m_fabricResourceStreamData.getDesc()->setData( m_fabricResourceStreamData.get(), resourceDataMember );
if( !m_keepMemoryCache )
m_fabricResourceStreamData.resizeData( 0 );
if( errorDesc )
{
if ( getContext()->getLogCollector() )
{
getContext()->getLogCollector()->add( ( "ResourceLoadNode " + getName() + ": error loading " + url + ": " + std::string( errorDesc ) ).c_str() );
}
}
}
if( notify )
{
std::vector<std::string> src;
src.push_back( "DG" );
src.push_back( getName() );
if( errorDesc )
getContext()->jsonNotify( src, "resourceLoadFailure", 19 );
else
getContext()->jsonNotify( src, "resourceLoadSuccess", 19 );
}
}
PtexFaceData* PtexReader::getData(int faceid)
{
if (faceid < 0 || size_t(faceid) >= _header.nfaces) return 0;
if (!_ok) return 0;
FaceInfo& fi = _faceinfo[faceid];
if (fi.isConstant() || fi.res == 0) {
return new ConstDataPtr(getConstData() + faceid * _pixelsize, _pixelsize);
}
// get level zero (full) res face
AutoLockCache locker(_cache->cachelock);
Level* level = getLevel(0);
FaceData* face = getFace(0, level, faceid);
level->unref();
return face;
}
PtexFaceData* PtexReader::getData(int faceid, Res res)
{
if (!_ok) return 0;
if (faceid < 0 || size_t(faceid) >= _header.nfaces) return 0;
FaceInfo& fi = _faceinfo[faceid];
if ((fi.isConstant() && res >= 0) || res == 0) {
return new ConstDataPtr(getConstData() + faceid * _pixelsize, _pixelsize);
}
// lock cache (can't autolock since we might need to unlock early)
_cache->cachelock.lock();
// determine how many reduction levels are needed
int redu = fi.res.ulog2 - res.ulog2, redv = fi.res.vlog2 - res.vlog2;
if (redu == 0 && redv == 0) {
// no reduction - get level zero (full) res face
Level* level = getLevel(0);
FaceData* face = getFace(0, level, faceid);
level->unref();
_cache->cachelock.unlock();
return face;
}
if (redu == redv && !fi.hasEdits() && res >= 0) {
// reduction is symmetric and non-negative
// and face has no edits => access data from reduction level (if present)
int levelid = redu;
if (size_t(levelid) < _levels.size()) {
Level* level = getLevel(levelid);
// get reduction face id
int rfaceid = _rfaceids[faceid];
// get the face data (if present)
FaceData* face = 0;
if (size_t(rfaceid) < level->faces.size())
face = getFace(levelid, level, rfaceid);
level->unref();
if (face) {
_cache->cachelock.unlock();
return face;
}
}
}
// dynamic reduction required - look in dynamic reduction cache
FaceData*& face = _reductions[ReductionKey(faceid, res)];
if (face) {
face->ref();
_cache->cachelock.unlock();
return face;
}
// not found, generate new reduction
// unlock cache - getData and reduce will handle their own locking
_cache->cachelock.unlock();
if (res.ulog2 < 0 || res.vlog2 < 0) {
std::cerr << "PtexReader::getData - reductions below 1 pixel not supported" << std::endl;
return 0;
}
if (redu < 0 || redv < 0) {
std::cerr << "PtexReader::getData - enlargements not supported" << std::endl;
return 0;
}
if (_header.meshtype == mt_triangle)
{
if (redu != redv) {
std::cerr << "PtexReader::getData - anisotropic reductions not supported for triangle mesh" << std::endl;
return 0;
}
PtexPtr<PtexFaceData> psrc ( getData(faceid, Res(res.ulog2+1, res.vlog2+1)) );
FaceData* src = dynamic_cast<FaceData*>(psrc.get());
assert(src);
if (src) src->reduce(face, this, res, PtexUtils::reduceTri);
return face;
}
// determine which direction to blend
bool blendu;
if (redu == redv) {
// for symmetric face blends, alternate u and v blending
blendu = (res.ulog2 & 1);
}
else blendu = redu > redv;
if (blendu) {
// get next-higher u-res and reduce in u
PtexPtr<PtexFaceData> psrc ( getData(faceid, Res(res.ulog2+1, res.vlog2)) );
FaceData* src = dynamic_cast<FaceData*>(psrc.get());
assert(src);
if (src) src->reduce(face, this, res, PtexUtils::reduceu);
}
else {
// get next-higher v-res and reduce in v
PtexPtr<PtexFaceData> psrc ( getData(faceid, Res(res.ulog2, res.vlog2+1)) );
FaceData* src = dynamic_cast<FaceData*>(psrc.get());
assert(src);
if (src) src->reduce(face, this, res, PtexUtils::reducev);
}
return face;
}
