FGFS-4.1/OpenSceneGraph
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Added support for fixing transprency on objects that should have been

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placed in the opaque bin.
This commit is contained in:
Robert Osfield 2005-02-11 16:43:54 +00:00
parent 0420222ce5
commit 8f90f57cc0
1 changed files with 144 additions and 24 deletions
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168
examples/osgconv/osgconv.cpp
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@ -8,6 +8,7 @@
#include <osg/Geometry>
#include <osg/Texture2D>
#include <osg/Texture3D>
#include <osg/BlendFunc>
#include <osgDB/Registry>
#include <osgDB/ReadFile>
@ -163,6 +164,121 @@ public:
};
class FixTransparencyVisitor : public osg::NodeVisitor
{
public:
enum FixTransparencyMode
{
NO_TRANSPARANCY_FIXING,
MAKE_OPAQUE_TEXTURE_STATESET_OPAQUE,
MAKE_ALL_STATESET_OPAQUE,
};
FixTransparencyVisitor(FixTransparencyMode mode=MAKE_OPAQUE_TEXTURE_STATESET_OPAQUE):
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
_numTransparent(0),
_numOpaque(0),
_numTransparentMadeOpaque(0),
_mode(mode)
{
std::cout<<"Running FixTransparencyVisitor..."<<std::endl;
}
~FixTransparencyVisitor()
{
std::cout<<" Number of Transparent StateSet "<<_numTransparent<<std::endl;
std::cout<<" Number of Opaque StateSet "<<_numOpaque<<std::endl;
std::cout<<" Number of Transparent State made Opaque "<<_numTransparentMadeOpaque<<std::endl;
}
virtual void apply(osg::Node& node)
{
if (node.getStateSet()) isTransparent(*node.getStateSet());
traverse(node);
}
virtual void apply(osg::Geode& node)
{
if (node.getStateSet()) isTransparent(*node.getStateSet());
for(unsigned int i=0;i<node.getNumDrawables();++i)
{
osg::Drawable* drawable = node.getDrawable(i);
if (drawable && drawable->getStateSet()) isTransparent(*drawable->getStateSet());
}
traverse(node);
}
virtual bool isTransparent(osg::StateSet& stateset)
{
bool hasTranslucentTexture = false;
bool hasBlendFunc = dynamic_cast<osg::BlendFunc*>(stateset.getAttribute(osg::StateAttribute::BLENDFUNC))!=0;
bool hasTransparentRenderingHint = stateset.getRenderingHint()==osg::StateSet::TRANSPARENT_BIN;
bool hasDepthSortBin = (stateset.getRenderBinMode()==osg::StateSet::USE_RENDERBIN_DETAILS)?(stateset.getBinName()=="DepthSortedBin"):false;
bool hasTexture = false;
// search for the existance of any texture object attributes
for(unsigned int i=0;i<stateset.getTextureAttributeList().size();++i)
{
osg::Texture* texture = dynamic_cast<osg::Texture*>(stateset.getTextureAttribute(i,osg::StateAttribute::TEXTURE));
if (texture)
{
hasTexture = true;
for (unsigned int im=0;im<texture->getNumImages();++im)
{
osg::Image* image = texture->getImage(im);
if (image->isImageTranslucent()) hasTranslucentTexture = true;
}
}
}
if (hasTranslucentTexture || hasBlendFunc || hasTransparentRenderingHint || hasDepthSortBin)
{
++_numTransparent;
bool makeNonTransparent = false;
switch(_mode)
{
case(MAKE_OPAQUE_TEXTURE_STATESET_OPAQUE):
if (hasTexture && !hasTranslucentTexture)
{
makeNonTransparent = true;
}
break;
case(MAKE_ALL_STATESET_OPAQUE):
makeNonTransparent = true;
break;
}
if (makeNonTransparent)
{
stateset.removeAttribute(osg::StateAttribute::BLENDFUNC);
stateset.removeMode(GL_BLEND);
stateset.setRenderingHint(osg::StateSet::DEFAULT_BIN);
++_numTransparentMadeOpaque;
}
return true;
}
else
{
++_numOpaque;
return false;
}
}
unsigned int _numTransparent;
unsigned int _numOpaque;
unsigned int _numTransparentMadeOpaque;
FixTransparencyMode _mode;
};
static void usage( const char *prog, const char *msg )
{
if (msg)
@ -177,12 +293,22 @@ static void usage( const char *prog, const char *msg )
osg::notify(osg::NOTICE)<<"options:"<< std::endl;
osg::notify(osg::NOTICE)<<" -O option - ReaderWriter option"<< std::endl;
osg::notify(osg::NOTICE)<< std::endl;
osg::notify(osg::NOTICE)<<" --compressed - Compress textures."<< std::endl;
osg::notify(osg::NOTICE)<<" --compressed - Enable the usage of compressed textures."<< std::endl;
osg::notify(osg::NOTICE)<<" --compressed - Enable the usage of compressed textures,"<< std::endl;
osg::notify(osg::NOTICE)<<" defaults to OpenGL ARB compressed textures."<< std::endl;
osg::notify(osg::NOTICE)<<" --compressed-arb - Enable the usage of OpenGL ARB compressed textures"<< std::endl;
osg::notify(osg::NOTICE)<<" --compressed-dxt1 - Enable the usage of S3TC DXT1 compressed textures"<< std::endl;
osg::notify(osg::NOTICE)<<" --compressed-dxt3 - Enable the usage of S3TC DXT3 compressed textures"<< std::endl;
osg::notify(osg::NOTICE)<<" --compressed-dxt5 - Enable the usage of S3TC DXT5 compressed textures"<< std::endl;
osg::notify(osg::NOTICE)<< std::endl;
osg::notify(osg::NOTICE)<<" --fixTransparency - fix stateset which are curerntly declared as transprent,"<< std::endl;
osg::notify(osg::NOTICE)<<" but should be opaque. Defaults to using the "<< std::endl;
osg::notify(osg::NOTICE)<<" fixTranspancyMode MAKE_OPAQUE_TEXTURE_STATESET_OPAQUE."<< std::endl;
osg::notify(osg::NOTICE)<<" --fixTransparencyMode <mode_string> - fix stateset which are curerntly declared as"<< std::endl;
osg::notify(osg::NOTICE)<<" transprent but should be opaque. The mode_string determines"<< std::endl;
osg::notify(osg::NOTICE)<<" algorithm is used to fix the transparency, options are: "<< std::endl;
osg::notify(osg::NOTICE)<<" MAKE_OPAQUE_TEXTURE_STATESET_OPAQUE,"<<std::endl;
osg::notify(osg::NOTICE)<<" MAKE_ALL_STATESET_OPAQUE."<<std::endl;
osg::notify(osg::NOTICE)<< std::endl;
osg::notify(osg::NOTICE)<<" -l libraryName - load plugin of name libraryName"<< std::endl;
osg::notify(osg::NOTICE)<<" i.e. -l osgdb_pfb"<< std::endl;
@ -282,27 +408,6 @@ int main( int argc, char **argv )
{
osgDB::Registry::instance()->loadLibrary(libName);
}
#if 0
if( nexti < argc )
{
osg::Vec3 scale(0,0,0);
if( sscanf( argv[nexti++], "%f,%f,%f",
&scale[0], &scale[1], &scale[2] ) != 3 )
{
usage( argv[0], "Scale argument format incorrect." );
return false;
}
oc.setScale( scale );
do_convert = true;
}
else
{
usage( argv[0], "Scale conversion option requires an argument." );
return false;
}
break;
#endif
while (arguments.read("-o",str))
{
@ -360,7 +465,16 @@ int main( int argc, char **argv )
do_convert = true;
}
FixTransparencyVisitor::FixTransparencyMode fixTransparencyMode = FixTransparencyVisitor::NO_TRANSPARANCY_FIXING;
std::string fixString;
while(arguments.read("--fixTransparency")) fixTransparencyMode = FixTransparencyVisitor::MAKE_OPAQUE_TEXTURE_STATESET_OPAQUE;
while(arguments.read("--fixTransparencyMode",fixString))
{
if (fixString=="MAKE_OPAQUE_TEXTURE_STATESET_OPAQUE") fixTransparencyMode = FixTransparencyVisitor::MAKE_OPAQUE_TEXTURE_STATESET_OPAQUE;
if (fixString=="MAKE_ALL_STATESET_OPAQUE") fixTransparencyMode = FixTransparencyVisitor::MAKE_ALL_STATESET_OPAQUE;
};
osg::Texture::InternalFormatMode internalFormatMode = osg::Texture::USE_IMAGE_DATA_FORMAT;
while(arguments.read("--compressed") || arguments.read("--compressed-arb")) { internalFormatMode = osg::Texture::USE_ARB_COMPRESSION; }
@ -396,6 +510,12 @@ int main( int argc, char **argv )
osg::ref_ptr<osg::Node> root = osgDB::readNodeFiles(fileNames);
if (fixTransparencyMode != FixTransparencyVisitor::NO_TRANSPARANCY_FIXING)
{
FixTransparencyVisitor atv(fixTransparencyMode);
root->accept(atv);
}
if ( root.valid() )
{
// convert the old style GeoSet to Geometry