FGFS-4.1/OpenSceneGraph
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Added proper handling of 3d texture compression

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This commit is contained in:
Robert Osfield
2004-09-30 09:10:29 +00:00
parent a8739f952a
commit d204a087c3
6 changed files with 139 additions and 32 deletions
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46
examples/osgconv/osgconv.cpp
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@@ -7,6 +7,7 @@
#include <osg/Vec3>
#include <osg/Geometry>
#include <osg/Texture2D>
#include <osg/Texture3D>
#include <osgDB/Registry>
#include <osgDB/ReadFile>
@@ -87,7 +88,9 @@ class CompressTexturesVisitor : public osg::NodeVisitor
{
public:
CompressTexturesVisitor():osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN) {}
CompressTexturesVisitor(osg::Texture::InternalFormatMode internalFormatMode):
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN),
_internalFormatMode(internalFormatMode) {}
virtual void apply(osg::Node& node)
{
@@ -113,7 +116,7 @@ public:
// search for the existance of any texture object attributes
for(unsigned int i=0;i<stateset.getTextureAttributeList().size();++i)
{
osg::Texture2D* texture = dynamic_cast<osg::Texture2D*>(stateset.getTextureAttribute(i,osg::StateAttribute::TEXTURE));
osg::Texture* texture = dynamic_cast<osg::Texture*>(stateset.getTextureAttribute(i,osg::StateAttribute::TEXTURE));
if (texture)
{
_textureSet.insert(texture);
@@ -131,13 +134,17 @@ public:
itr!=_textureSet.end();
++itr)
{
osg::Texture2D* texture = const_cast<osg::Texture2D*>(itr->get());
osg::Image* image = texture->getImage();
osg::Texture* texture = const_cast<osg::Texture*>(itr->get());
osg::Texture2D* texture2D = dynamic_cast<osg::Texture2D*>(texture);
osg::Texture3D* texture3D = dynamic_cast<osg::Texture3D*>(texture);
osg::Image* image = texture2D ? texture2D->getImage() : texture3D ? texture3D->getImage() : 0;
if (image &&
(image->getPixelFormat()==GL_RGB || image->getPixelFormat()==GL_RGBA) &&
(image->s()>=32 && image->t()>=32))
{
texture->setInternalFormatMode(osg::Texture::USE_S3TC_DXT3_COMPRESSION);
texture->setInternalFormatMode(_internalFormatMode);
// get OpenGL driver to create texture from image.
texture->apply(*state);
@@ -149,10 +156,10 @@ public:
}
}
typedef std::set< osg::ref_ptr<osg::Texture2D> > TextureSet;
TextureSet _textureSet;
typedef std::set< osg::ref_ptr<osg::Texture> > TextureSet;
TextureSet _textureSet;
osg::Texture::InternalFormatMode _internalFormatMode;
};
@@ -169,7 +176,14 @@ static void usage( const char *prog, const char *msg )
osg::notify(osg::NOTICE)<< std::endl;
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-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)<<" -l libraryName - load plugin of name libraryName"<< std::endl;
osg::notify(osg::NOTICE)<<" i.e. -l osgdb_pfb"<< std::endl;
osg::notify(osg::NOTICE)<<" Useful for loading reader/writers which can load"<< std::endl;
@@ -228,6 +242,7 @@ int main( int argc, char **argv )
arguments.getApplicationUsage()->setDescription(arguments.getApplicationName()+" is the standard OpenSceneGraph example which loads and visualises 3d models.");
arguments.getApplicationUsage()->setCommandLineUsage(arguments.getApplicationName()+" [options] filename ...");
// if user request help write it out to cout.
if (arguments.read("-h") || arguments.read("--help"))
{
@@ -246,7 +261,6 @@ int main( int argc, char **argv )
FileNameList fileNames;
OrientationConverter oc;
bool do_convert = false;
bool compressTextures = false;
std::string str;
while (arguments.read("-O",str))
@@ -347,10 +361,12 @@ int main( int argc, char **argv )
}
while (arguments.read("--compressed"))
{
compressTextures = true;
}
osg::Texture::InternalFormatMode internalFormatMode = osg::Texture::USE_IMAGE_DATA_FORMAT;
while(arguments.read("--compressed") || arguments.read("--compressed-arb")) { internalFormatMode = osg::Texture::USE_ARB_COMPRESSION; }
while(arguments.read("--compressed-dxt1")) { internalFormatMode = osg::Texture::USE_S3TC_DXT1_COMPRESSION; }
while(arguments.read("--compressed-dxt3")) { internalFormatMode = osg::Texture::USE_S3TC_DXT3_COMPRESSION; }
while(arguments.read("--compressed-dxt5")) { internalFormatMode = osg::Texture::USE_S3TC_DXT5_COMPRESSION; }
// any option left unread are converted into errors to write out later.
arguments.reportRemainingOptionsAsUnrecognized();
@@ -393,12 +409,12 @@ int main( int argc, char **argv )
if( do_convert )
root = oc.convert( root.get() );
if (compressTextures)
if (internalFormatMode != osg::Texture::USE_IMAGE_DATA_FORMAT)
{
std::string ext = osgDB::getFileExtension(fileNameOut);
if (ext=="ive")
{
CompressTexturesVisitor ctv;
CompressTexturesVisitor ctv(internalFormatMode);
root->accept(ctv);
ctv.compress();
}