FGFS-4.1/OpenSceneGraph
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To the TextureAtlasBuilder added detection of instance where a single drawable

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has multiple textures on the same texture unit inherited down to it from above.
This commit is contained in:
Robert Osfield 2006-08-29 15:05:05 +00:00
parent 3615f681a9
commit 25bf4a6626
1 changed files with 68 additions and 3 deletions
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69
src/osgUtil/Optimizer.cpp
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@ -3766,6 +3766,63 @@ void Optimizer::TextureAtlasVisitor::optimize()
_builder.buildAtlas();
typedef std::set<osg::StateSet*> StateSetSet;
typedef std::map<osg::Drawable*, StateSetSet> DrawableStateSetMap;
DrawableStateSetMap dssm;
for(sitr = _statesetMap.begin();
sitr != _statesetMap.end();
++sitr)
{
Drawables& drawables = sitr->second;
for(Drawables::iterator ditr = drawables.begin();
ditr != drawables.end();
++ditr)
{
dssm[(*ditr)->asGeometry()].insert(sitr->first);
}
}
Drawables drawablesThatHaveMultipleTexturesOnOneUnit;
for(DrawableStateSetMap::iterator ditr = dssm.begin();
ditr != dssm.end();
++ditr)
{
osg::Drawable* drawable = ditr->first;
StateSetSet& ssm = ditr->second;
if (ssm.size()>1)
{
typedef std::map<unsigned int, Textures> UnitTextureMap;
UnitTextureMap unitTextureMap;
for(StateSetSet::iterator ssm_itr = ssm.begin();
ssm_itr != ssm.end();
++ssm_itr)
{
osg::StateSet* ss = *ssm_itr;
unsigned int numTextureUnits = ss->getTextureAttributeList().size();
for(unsigned int unit=0; unit<numTextureUnits; ++unit)
{
osg::Texture2D* texture = dynamic_cast<osg::Texture2D*>(ss->getTextureAttribute(unit, osg::StateAttribute::TEXTURE));
if (texture) unitTextureMap[unit].insert(texture);
}
}
bool drawablesHasMultiTextureOnOneUnit = false;
for(UnitTextureMap::iterator utm_itr = unitTextureMap.begin();
utm_itr != unitTextureMap.end() && !drawablesHasMultiTextureOnOneUnit;
++utm_itr)
{
if (utm_itr->second.size()>1)
{
drawablesHasMultiTextureOnOneUnit = true;
}
}
if (drawablesHasMultiTextureOnOneUnit)
{
drawablesThatHaveMultipleTexturesOnOneUnit.insert(drawable);
}
}
}
// remap the textures in the StateSet's
for(sitr = _statesetMap.begin();
sitr != _statesetMap.end();
@ -3790,13 +3847,21 @@ void Optimizer::TextureAtlasVisitor::optimize()
// first check to see if all drawables are ok for applying texturematrix to.
bool canTexMatBeFlattenedToAllDrawables = true;
for(Drawables::iterator ditr = drawables.begin();
ditr != drawables.end();
ditr != drawables.end() && canTexMatBeFlattenedToAllDrawables;
++ditr)
{
osg::Geometry* geom = (*ditr)->asGeometry();
osg::Vec2Array* texcoords = geom ? dynamic_cast<osg::Vec2Array*>(geom->getTexCoordArray(unit)) : 0;
if (!texcoords) canTexMatBeFlattenedToAllDrawables = false;
if (!texcoords)
{
canTexMatBeFlattenedToAllDrawables = false;
}
if (drawablesThatHaveMultipleTexturesOnOneUnit.count(*ditr)!=0)
{
canTexMatBeFlattenedToAllDrawables = false;
}
}
if (canTexMatBeFlattenedToAllDrawables)