FGFS-4.1/OpenSceneGraph
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Implemented remapping of gl_ builtins vertex attributes to osg_ equivlants.

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This commit is contained in:
Robert Osfield 2009-10-08 15:58:23 +00:00
parent 3f55f3f140
commit 1cfe017209
1 changed files with 94 additions and 0 deletions
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94
examples/osgvertexattributes/osgvertexattributes.cpp
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@ -46,16 +46,106 @@ class ConvertToVertexAttibArrays : public osg::NodeVisitor
_texCoordAlias[7] = AttributeAlias(15, "osg_MultiTexCoord7");
}
std::string convertShader(std::string source)
{
replace(source, "gl_Vertex", "osg_Vertex");
replace(source, "gl_Normal", "osg_Normal");
replace(source, "gl_Color", "osg_Color");
replace(source, "gl_SecondaryColor", "osg_SecondaryColor");
replace(source, "gl_FogCoord", "osg_FogCoord");
replace(source, "gl_MultiTexCoord0", "osg_MultiTexCoord0");
replace(source, "gl_MultiTexCoord1", "osg_MultiTexCoord1");
replace(source, "gl_MultiTexCoord2", "osg_MultiTexCoord2");
replace(source, "gl_MultiTexCoord3", "osg_MultiTexCoord3");
replace(source, "gl_MultiTexCoord4", "osg_MultiTexCoord4");
replace(source, "gl_MultiTexCoord5", "osg_MultiTexCoord5");
replace(source, "gl_MultiTexCoord6", "osg_MultiTexCoord6");
replace(source, "gl_MultiTexCoord7", "osg_MultiTexCoord7");
return source;
}
virtual void reset()
{
_visited.clear();
}
void apply(osg::Node& node)
{
if (_visited.count(&node)!=0) return;
_visited.insert(&node);
if (node.getStateSet()) apply(*(node.getStateSet()));
traverse(node);
}
void apply(osg::Geode& geode)
{
if (_visited.count(&geode)!=0) return;
_visited.insert(&geode);
if (geode.getStateSet()) apply(*(geode.getStateSet()));
for(unsigned int i=0; i<geode.getNumDrawables(); ++i)
{
if (geode.getDrawable(i)->getStateSet()) apply(*(geode.getDrawable(i)->getStateSet()));
osg::Geometry* geom = geode.getDrawable(i)->asGeometry();
if (geom) apply(*geom);
}
}
void replace(std::string& str, const std::string& original_phrase, const std::string& new_phrase)
{
std::string::size_type pos = 0;
while((pos=str.find(original_phrase, pos))!=std::string::npos)
{
std::string::size_type endOfPhrasePos = pos+original_phrase.size();
if (endOfPhrasePos<str.size())
{
char c = str[endOfPhrasePos];
if ((c>='0' && c<='9') ||
(c>='a' && c<='z') ||
(c>='A' && c<='Z'))
{
pos = endOfPhrasePos;
continue;
}
}
str.replace(pos, original_phrase.size(), new_phrase);
}
}
void apply(osg::Shader& shader)
{
if (_visited.count(&shader)!=0) return;
_visited.insert(&shader);
osg::notify(osg::NOTICE)<<"Shader "<<shader.getTypename()<<" ----before-----------"<<std::endl;
osg::notify(osg::NOTICE)<<shader.getShaderSource()<<std::endl;
shader.setShaderSource(convertShader(shader.getShaderSource()));
osg::notify(osg::NOTICE)<<"--after-----------"<<std::endl;
osg::notify(osg::NOTICE)<<shader.getShaderSource()<<std::endl;
osg::notify(osg::NOTICE)<<"---------------------"<<std::endl;
}
void apply(osg::StateSet& stateset)
{
if (_visited.count(&stateset)!=0) return;
_visited.insert(&stateset);
osg::notify(osg::NOTICE)<<"Found stateset "<<&stateset<<std::endl;
osg::Program* program = dynamic_cast<osg::Program*>(stateset.getAttribute(osg::StateAttribute::PROGRAM));
if (program)
{
osg::notify(osg::NOTICE)<<" Found Program "<<program<<std::endl;
for(unsigned int i=0; i<program->getNumShaders(); ++i)
{
apply(*(program->getShader(i)));
}
}
}
void apply(osg::Geometry& geom)
{
osg::notify(osg::NOTICE)<<"Found geometry "<<&geom<<std::endl;
@ -122,6 +212,10 @@ class ConvertToVertexAttibArrays : public osg::NodeVisitor
osg::notify(osg::NOTICE)<<" vertex attrib("<<name<<", index="<<index<<", normalize="<<normalize<<" binding="<<binding<<")"<<std::endl;
}
typedef std::set<osg::Object*> Visited;
Visited _visited;
AttributeAlias _vertexAlias;
AttributeAlias _normalAlias;
AttributeAlias _colorAlias;