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Futher work on TextureAtlasBuilder/Visitor, now functioning enough to deploy on real models.

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This commit is contained in:
Robert Osfield 2006-08-28 15:46:02 +00:00
parent 1055bd013d
commit 19f3d975dd
2 changed files with 254 additions and 48 deletions
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10
include/osgUtil/Optimizer
View File

@ -722,14 +722,18 @@ class OSGUTIL_EXPORT Optimizer
protected:
void addStateSet(osg::StateSet* stateset);
bool pushStateSet(osg::StateSet* stateset);
void popStateSet();
typedef std::set<osg::StateSet*> StateSets;
typedef std::set<osg::Drawable*> Drawables;
typedef std::map<osg::StateSet*, Drawables> StateSetMap;
typedef std::set<osg::Texture2D*> Textures;
typedef std::vector<osg::StateSet*> StateSetStack;
TextureAtlasBuilder _builder;
StateSets _statesets;
StateSetMap _statesetMap;
StateSetStack _statesetStack;
Textures _textures;
};

268
src/osgUtil/Optimizer.cpp
View File

@ -2975,8 +2975,8 @@ void Optimizer::FlattenBillboardVisitor::process()
////////////////////////////////////////////////////////////////////////////
Optimizer::TextureAtlasBuilder::TextureAtlasBuilder():
_maximumAtlasWidth(512),
_maximumAtlasHeight(512),
_maximumAtlasWidth(2048),
_maximumAtlasHeight(2048),
_margin(8)
{
}
@ -3024,7 +3024,7 @@ void Optimizer::TextureAtlasBuilder::buildAtlas()
aitr != _atlasList.end() && !addedSourceToAtlas;
++aitr)
{
osg::notify(osg::NOTICE)<<"checking source "<<source->_image->getFileName()<<" to see it it'll fit in atlas "<<aitr->get()<<std::endl;
osg::notify(osg::INFO)<<"checking source "<<source->_image->getFileName()<<" to see it it'll fit in atlas "<<aitr->get()<<std::endl;
if ((*aitr)->doesSourceFit(source))
{
addedSourceToAtlas = true;
@ -3032,13 +3032,13 @@ void Optimizer::TextureAtlasBuilder::buildAtlas()
}
else
{
osg::notify(osg::NOTICE)<<"source "<<source->_image->getFileName()<<" does not fit in atlas "<<aitr->get()<<std::endl;
osg::notify(osg::INFO)<<"source "<<source->_image->getFileName()<<" does not fit in atlas "<<aitr->get()<<std::endl;
}
}
if (!addedSourceToAtlas)
{
osg::notify(osg::NOTICE)<<"creating new Atlas for "<<source->_image->getFileName()<<std::endl;
osg::notify(osg::INFO)<<"creating new Atlas for "<<source->_image->getFileName()<<std::endl;
osg::ref_ptr<Atlas> atlas = new Atlas(_maximumAtlasWidth,_maximumAtlasHeight,_margin);
_atlasList.push_back(atlas.get());
@ -3173,10 +3173,27 @@ bool Optimizer::TextureAtlasBuilder::Source::suitableForAtlas(unsigned int maxim
if (_image->s()+margin*2 > maximumAtlasWidth) return false;
if (_image->t()+margin*2 > maximumAtlasHeight) return false;
// FIXME need to handle compressed textures...
switch(_image->getPixelFormat())
{
case(GL_COMPRESSED_ALPHA_ARB):
case(GL_COMPRESSED_INTENSITY_ARB):
case(GL_COMPRESSED_LUMINANCE_ALPHA_ARB):
case(GL_COMPRESSED_LUMINANCE_ARB):
case(GL_COMPRESSED_RGBA_ARB):
case(GL_COMPRESSED_RGB_ARB):
case(GL_COMPRESSED_RGB_S3TC_DXT1_EXT):
case(GL_COMPRESSED_RGBA_S3TC_DXT1_EXT):
case(GL_COMPRESSED_RGBA_S3TC_DXT3_EXT):
case(GL_COMPRESSED_RGBA_S3TC_DXT5_EXT):
// can't handle compressed textures inside an atlas
return false;
default:
break;
}
if (_texture.valid())
{
if (_texture->getWrap(osg::Texture2D::WRAP_S)==osg::Texture2D::REPEAT ||
_texture->getWrap(osg::Texture2D::WRAP_S)==osg::Texture2D::MIRROR)
{
@ -3197,6 +3214,7 @@ bool Optimizer::TextureAtlasBuilder::Source::suitableForAtlas(unsigned int maxim
return false;
}
}
return true;
}
@ -3323,16 +3341,17 @@ bool Optimizer::TextureAtlasBuilder::Atlas::doesSourceFit(Source* source)
return false;
}
if ((_y + sourceImage->t() + 2*_margin) > _maximumAtlasWidth)
if ((_y + sourceImage->t() + 2*_margin) > _maximumAtlasHeight)
{
// image doesn't have up space in height axis.
return false;
}
// does the source fit in the current row?
if ((_x + sourceImage->s() + 2*_margin) <= _maximumAtlasWidth)
{
// yes it fits :-)
osg::notify(osg::NOTICE)<<"Fits in current row"<<std::endl;
osg::notify(osg::INFO)<<"Fits in current row"<<std::endl;
return true;
}
@ -3340,7 +3359,7 @@ bool Optimizer::TextureAtlasBuilder::Atlas::doesSourceFit(Source* source)
if ((_height + sourceImage->t() + 2*_margin) <= _maximumAtlasHeight)
{
// yes it fits :-)
osg::notify(osg::NOTICE)<<"Fits in next row"<<std::endl;
osg::notify(osg::INFO)<<"Fits in next row"<<std::endl;
return true;
}
@ -3353,7 +3372,7 @@ bool Optimizer::TextureAtlasBuilder::Atlas::addSource(Source* source)
// double check source is compatible
if (!doesSourceFit(source))
{
osg::notify(osg::NOTICE)<<"source "<<source->_image->getFileName()<<" does not fit in atlas "<<this<<std::endl;
osg::notify(osg::INFO)<<"source "<<source->_image->getFileName()<<" does not fit in atlas "<<this<<std::endl;
return false;
}
@ -3397,7 +3416,7 @@ bool Optimizer::TextureAtlasBuilder::Atlas::addSource(Source* source)
// yes it fits, so add the source to the atlas's list of sources it contains
_sourceList.push_back(source);
osg::notify(osg::NOTICE)<<"current row insertion, source "<<source->_image->getFileName()<<" "<<_x<<","<<_y<<" fits in row of atlas "<<this<<std::endl;
osg::notify(osg::INFO)<<"current row insertion, source "<<source->_image->getFileName()<<" "<<_x<<","<<_y<<" fits in row of atlas "<<this<<std::endl;
// set up the source so it knows where it is in the atlas
source->_x = _x + _margin;
@ -3425,7 +3444,7 @@ bool Optimizer::TextureAtlasBuilder::Atlas::addSource(Source* source)
// yes it fits, so add the source to the atlas' list of sources it contains
_sourceList.push_back(source);
osg::notify(osg::NOTICE)<<"next row insertion, source "<<source->_image->getFileName()<<" "<<_x<<","<<_y<<" fits in row of atlas "<<this<<std::endl;
osg::notify(osg::INFO)<<"next row insertion, source "<<source->_image->getFileName()<<" "<<_x<<","<<_y<<" fits in row of atlas "<<this<<std::endl;
// set up the source so it knows where it is in the atlas
source->_x = _x + _margin;
@ -3439,12 +3458,12 @@ bool Optimizer::TextureAtlasBuilder::Atlas::addSource(Source* source)
_height = _y + sourceImage->t() + 2*_margin;
osg::notify(osg::NOTICE)<<"source "<<source->_image->getFileName()<<" "<<_x<<","<<_y<<" fits in row of atlas "<<this<<std::endl;
osg::notify(osg::INFO)<<"source "<<source->_image->getFileName()<<" "<<_x<<","<<_y<<" fits in row of atlas "<<this<<std::endl;
return true;
}
osg::notify(osg::NOTICE)<<"source "<<source->_image->getFileName()<<" does not fit in atlas "<<this<<std::endl;
osg::notify(osg::INFO)<<"source "<<source->_image->getFileName()<<" does not fit in atlas "<<this<<std::endl;
// shouldn't get here, unless doesSourceFit isn't working...
return false;
@ -3458,10 +3477,10 @@ void Optimizer::TextureAtlasBuilder::Atlas::clampToNearestPowerOfTwoSize()
unsigned int h = 1;
while (h<_height) h *= 2;
osg::notify(osg::NOTICE)<<"Clamping "<<_width<<", "<<_height<<" to "<<w<<","<<h<<std::endl;
osg::notify(osg::INFO)<<"Clamping "<<_width<<", "<<_height<<" to "<<w<<","<<h<<std::endl;
_width = w;
_height = w;
_height = h;
}
#if 0
@ -3470,12 +3489,19 @@ void Optimizer::TextureAtlasBuilder::Atlas::clampToNearestPowerOfTwoSize()
void Optimizer::TextureAtlasBuilder::Atlas::copySources()
{
osg::notify(osg::INFO)<<"Allocated to "<<_width<<","<<_height<<std::endl;
_image->allocateImage(_width,_height,1,
_image->getPixelFormat(),_image->getDataType(),
_image->getPacking());
{
// clear memory
unsigned int size = _image->getTotalSizeInBytes();
unsigned char* str = _image->data();
for(unsigned int i=0; i<size; ++i) *(str++) = 0;
}
osg::notify(osg::NOTICE)<<"Atlas::copySources() "<<std::endl;
osg::notify(osg::INFO)<<"Atlas::copySources() "<<std::endl;
for(SourceList::iterator itr = _sourceList.begin();
itr !=_sourceList.end();
++itr)
@ -3485,7 +3511,8 @@ void Optimizer::TextureAtlasBuilder::Atlas::copySources()
if (atlas)
{
osg::notify(osg::NOTICE)<<"Copying image "<<source->_image->getFileName()<<" to "<<source->_x<<" ,"<<source->_y<<std::endl;
osg::notify(osg::INFO)<<"Copying image "<<source->_image->getFileName()<<" to "<<source->_x<<" ,"<<source->_y<<std::endl;
osg::notify(osg::INFO)<<" image size "<<source->_image->s()<<","<<source->_image->t()<<std::endl;
const osg::Image* sourceImage = source->_image.get();
osg::Image* atlasImage = atlas->_image.get();
@ -3513,21 +3540,28 @@ void Optimizer::TextureAtlasBuilder::Atlas::copySources()
void Optimizer::TextureAtlasVisitor::reset()
{
_statesets.clear();
_statesetMap.clear();
_statesetStack.clear();
_textures.clear();
_builder.reset();
}
void Optimizer::TextureAtlasVisitor::addStateSet(osg::StateSet* stateset)
bool Optimizer::TextureAtlasVisitor::pushStateSet(osg::StateSet* stateset)
{
osg::StateSet::TextureAttributeList& tal = stateset->getTextureAttributeList();
// if no textures ignore
if (tal.empty()) return;
if (tal.empty()) return false;
bool pushStateState = false;
// if already in stateset list ignore
if (_statesets.count(stateset)>0) return;
if (_statesetMap.count(stateset)>0)
{
pushStateState = true;
}
else
{
bool containsTexture2D = false;
for(unsigned int unit=0; unit<tal.size(); ++unit)
{
@ -3541,13 +3575,28 @@ void Optimizer::TextureAtlasVisitor::addStateSet(osg::StateSet* stateset)
if (containsTexture2D)
{
_statesets.insert(stateset);
_statesetMap[stateset];
pushStateState = true;
}
}
if (pushStateState)
{
_statesetStack.push_back(stateset);
}
return pushStateState;
}
void Optimizer::TextureAtlasVisitor::popStateSet()
{
_statesetStack.pop_back();
}
void Optimizer::TextureAtlasVisitor::apply(osg::Node& node)
{
bool pushedStateState = false;
osg::StateSet* ss = node.getStateSet();
if (ss && ss->getDataVariance()==osg::Object::STATIC)
@ -3555,11 +3604,13 @@ void Optimizer::TextureAtlasVisitor::apply(osg::Node& node)
if (isOperationPermissibleForObject(&node) &&
isOperationPermissibleForObject(ss))
{
addStateSet(ss);
pushedStateState = pushStateSet(ss);
}
}
traverse(node);
if (pushedStateState) popStateSet();
}
void Optimizer::TextureAtlasVisitor::apply(osg::Geode& geode)
@ -3569,37 +3620,140 @@ void Optimizer::TextureAtlasVisitor::apply(osg::Geode& geode)
osg::StateSet* ss = geode.getStateSet();
bool pushedGeodeStateState = false;
if (ss && ss->getDataVariance()==osg::Object::STATIC)
{
if (isOperationPermissibleForObject(ss))
{
addStateSet(ss);
pushedGeodeStateState = pushStateSet(ss);
}
}
for(unsigned int i=0;i<geode.getNumDrawables();++i)
{
osg::Drawable* drawable = geode.getDrawable(i);
if (drawable)
{
bool pushedDrawableStateState = false;
ss = drawable->getStateSet();
if (ss && ss->getDataVariance()==osg::Object::STATIC)
{
if (isOperationPermissibleForObject(drawable) &&
isOperationPermissibleForObject(ss))
{
addStateSet(ss);
pushedDrawableStateState = pushStateSet(ss);
}
}
if (!_statesetStack.empty())
{
for(StateSetStack::iterator ssitr = _statesetStack.begin();
ssitr != _statesetStack.end();
++ssitr)
{
_statesetMap[*ssitr].insert(drawable);
}
}
if (pushedDrawableStateState) popStateSet();
}
}
if (pushedGeodeStateState) popStateSet();
}
void Optimizer::TextureAtlasVisitor::optimize()
{
osg::notify(osg::INFO) << "Num of StateSet="<<_statesets.size()<< std::endl;
_builder.reset();
if (_textures.size()<2)
{
// nothing to optimize
return;
}
Textures alreadyCheckedForRepeat;
StateSetMap::iterator sitr;
for(sitr = _statesetMap.begin();
sitr != _statesetMap.end();
++sitr)
{
osg::StateSet* stateset = sitr->first;
Drawables& drawables = sitr->second;
osg::StateSet::TextureAttributeList& tal = stateset->getTextureAttributeList();
for(unsigned int unit=0; unit<tal.size(); ++unit)
{
osg::Texture2D* texture = dynamic_cast<osg::Texture2D*>(stateset->getTextureAttribute(unit,osg::StateAttribute::TEXTURE));
if (texture && alreadyCheckedForRepeat.count(texture)==0)
{
alreadyCheckedForRepeat.insert(texture);
bool s_repeat = texture->getWrap(osg::Texture2D::WRAP_S)==osg::Texture2D::REPEAT ||
texture->getWrap(osg::Texture2D::WRAP_S)==osg::Texture2D::MIRROR;
bool t_repeat = texture->getWrap(osg::Texture2D::WRAP_T)==osg::Texture2D::REPEAT ||
texture->getWrap(osg::Texture2D::WRAP_T)==osg::Texture2D::MIRROR;
if (s_repeat || t_repeat)
{
bool s_outOfRange = false;
bool t_outOfRange = false;
float s_min = -0.001;
float s_max = 1.001;
float t_min = -0.001;
float t_max = 1.001;
for(Drawables::iterator ditr = drawables.begin();
ditr != drawables.end();
++ditr)
{
osg::Geometry* geom = (*ditr)->asGeometry();
osg::Vec2Array* texcoords = geom ? dynamic_cast<osg::Vec2Array*>(geom->getTexCoordArray(unit)) : 0;
if (texcoords)
{
for(osg::Vec2Array::iterator titr = texcoords->begin();
titr != texcoords->end() && !s_outOfRange && !t_outOfRange;
++titr)
{
osg::Vec2 tc = *titr;
if (tc[0]<s_min) { s_min = tc[0]; s_outOfRange = true; }
if (tc[0]>s_max) { s_max = tc[0]; s_outOfRange = true; }
if (tc[1]<t_min) { t_min = tc[1]; s_outOfRange = true; }
if (tc[1]>t_max) { t_max = tc[1]; s_outOfRange = true; }
}
}
else
{
// if no texcoords then texgen must be being used, therefore must assume that texture is truely repeating
s_outOfRange = true;
t_outOfRange = true;
}
}
bool s_canChangeToClamp = s_repeat && !s_outOfRange;
bool t_canChangeToClamp = t_repeat && !t_outOfRange;
if ((!s_repeat || s_canChangeToClamp) &&
(!t_repeat || t_canChangeToClamp))
{
// safe to convert into CLAMP wrap mode.
osg::notify(osg::INFO)<<"Changing wrap mode to CLAMP"<<std::endl;
if (s_canChangeToClamp) texture->setWrap(osg::Texture2D::WRAP_S, osg::Texture::CLAMP);
if (t_canChangeToClamp) texture->setWrap(osg::Texture2D::WRAP_T, osg::Texture::CLAMP);
}
}
}
}
}
// add the textures as sources for the TextureAtlasBuilder
for(Textures::iterator titr = _textures.begin();
titr != _textures.end();
@ -3611,12 +3765,13 @@ void Optimizer::TextureAtlasVisitor::optimize()
// build the atlas'
_builder.buildAtlas();
// remap the textures in the StateSet's
for(StateSets::iterator sitr = _statesets.begin();
sitr != _statesets.end();
for(sitr = _statesetMap.begin();
sitr != _statesetMap.end();
++sitr)
{
osg::StateSet* stateset = *sitr;
osg::StateSet* stateset = sitr->first;
osg::StateSet::TextureAttributeList& tal = stateset->getTextureAttributeList();
for(unsigned int unit=0; unit<tal.size(); ++unit)
{
@ -3627,7 +3782,54 @@ void Optimizer::TextureAtlasVisitor::optimize()
if (newTexture && newTexture!=texture)
{
stateset->setTextureAttribute(unit, newTexture);
stateset->setTextureAttribute(unit, new osg::TexMat(_builder.getTextureMatrix(texture)));
Drawables& drawables = sitr->second;
osg::Matrix matrix = _builder.getTextureMatrix(texture);
// 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)
{
osg::Geometry* geom = (*ditr)->asGeometry();
osg::Vec2Array* texcoords = geom ? dynamic_cast<osg::Vec2Array*>(geom->getTexCoordArray(unit)) : 0;
if (!texcoords) canTexMatBeFlattenedToAllDrawables = false;
}
if (canTexMatBeFlattenedToAllDrawables)
{
// osg::notify(osg::NOTICE)<<"All drawables can be flattened "<<drawables.size()<<std::endl;
for(Drawables::iterator ditr = drawables.begin();
ditr != drawables.end();
++ditr)
{
osg::Geometry* geom = (*ditr)->asGeometry();
osg::Vec2Array* texcoords = geom ? dynamic_cast<osg::Vec2Array*>(geom->getTexCoordArray(unit)) : 0;
if (texcoords)
{
for(osg::Vec2Array::iterator titr = texcoords->begin();
titr != texcoords->end();
++titr)
{
osg::Vec2 tc = *titr;
(*titr).set(tc[0]*matrix(0,0) + tc[1]*matrix(1,0) + matrix(3,0),
tc[0]*matrix(0,1) + tc[1]*matrix(1,1) + matrix(3,1));
}
}
else
{
osg::notify(osg::NOTICE)<<"Error, Optimizer::TextureAtlasVisitor::optimize() shouldn't ever get here..."<<std::endl;
}
}
}
else
{
// osg::notify(osg::NOTICE)<<"Applying TexMat "<<drawables.size()<<std::endl;
stateset->setTextureAttribute(unit, new osg::TexMat(matrix));
}
}
}
}