FGFS-4.1/OpenSceneGraph
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Improvements to the #pragma(tic) shader composition support

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git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14694 16af8721-9629-0410-8352-f15c8da7e697
This commit is contained in:
Robert Osfield 2015-02-13 12:50:43 +00:00
parent 77b8962bcc
commit 6bddbdf074
4 changed files with 50 additions and 12 deletions
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2
include/osg/Program
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@ -283,6 +283,8 @@ class OSG_EXPORT Program : public osg::StateAttribute
GLuint getHandle() const {return _glProgramHandle;}
const osg::Program* getProgram() const { return _program; }
void setDefineString(const std::string& defStr) { _defineStr = defStr; }
const std::string& getDefineString() const { return _defineStr; }

1
include/osg/State
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@ -1914,7 +1914,6 @@ class OSG_EXPORT State : public Referenced
inline void applyModeMap(ModeMap& modeMap);
inline void applyAttributeMap(AttributeMap& attributeMap);
inline void applyUniformMap(UniformMap& uniformMap);
inline void applyUniformMap(DefineMap& defineMap);
inline void applyModeListOnTexUnit(unsigned int unit,ModeMap& modeMap,const StateSet::ModeList& modeList);
inline void applyAttributeListOnTexUnit(unsigned int unit,AttributeMap& attributeMap,const StateSet::AttributeList& attributeList);

31
src/osg/Shader.cpp
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@ -667,6 +667,7 @@ void Shader::PerContextShader::compileShader(osg::State& state)
{
// OSG_NOTICE<<"Shader::PerContextShader::compileShader() : Found #version, lineNum = "<<lineNum<<" ["<<versionLine<<"] new source = ["<<source<<"]"<<std::endl;
const GLchar* sourceText[3];
//OSG_NOTICE<<"glShaderSource() ["<<versionLine<<"] "<<std::endl<<"["<<_defineStr<<"], ["<<sourceText<<"]"<<std::endl;
sourceText[0] = reinterpret_cast<const GLchar*>(versionLine.c_str());
sourceText[1] = reinterpret_cast<const GLchar*>(_defineStr.c_str());
sourceText[2] = reinterpret_cast<const GLchar*>(source.c_str());
@ -675,6 +676,7 @@ void Shader::PerContextShader::compileShader(osg::State& state)
else
{
const GLchar* sourceText[2];
//OSG_NOTICE<<"glShaderSource() ["<<_defineStr<<"], ["<<sourceText<<"]"<<std::endl;
sourceText[0] = reinterpret_cast<const GLchar*>(_defineStr.c_str());
sourceText[1] = reinterpret_cast<const GLchar*>(source.c_str());
_extensions->glShaderSource( _glShaderHandle, 2, sourceText, NULL );
@ -725,6 +727,7 @@ void Shader::PerContextShader::detachShader(GLuint program) const
void Shader::_parseShaderDefines(const std::string& str, ShaderDefines& defines)
{
OSG_NOTICE<<"Shader::_parseShaderDefines("<<str<<")"<<std::endl;
std::string::size_type start_of_parameter = 0;
do
{
@ -735,13 +738,24 @@ void Shader::_parseShaderDefines(const std::string& str, ShaderDefines& defines)
// find end of the parameter
std::string::size_type end_of_parameter = str.find_first_of(" \t,)", start_of_parameter);
if (end_of_parameter==std::string::npos) end_of_parameter = str.size();
if (end_of_parameter!=std::string::npos)
{
std::string::size_type start_of_open_brackets = str.find_first_of("(", start_of_parameter);
if (start_of_open_brackets<end_of_parameter) ++end_of_parameter;
}
else
{
end_of_parameter = str.size();
}
if (start_of_parameter<end_of_parameter)
{
std::string parameter = str.substr(start_of_parameter, end_of_parameter-start_of_parameter);
defines.insert(parameter);
OSG_NOTICE<<" defines.insert("<<parameter<<")"<<std::endl;
}
start_of_parameter = end_of_parameter;
start_of_parameter = end_of_parameter+1;
} while (start_of_parameter<str.size());
}
@ -763,7 +777,7 @@ void Shader::_computeShaderDefines()
std::string::size_type eol = _shaderSource.find_first_of("\n\r", pos);
if (eol==std::string::npos) eol = _shaderSource.size();
// OSG_NOTICE<<"\nFound pragma line ["<<_shaderSource.substr(first_chararcter, eol-first_chararcter)<<"]"<<std::endl;
OSG_NOTICE<<"\nFound pragma line ["<<_shaderSource.substr(first_chararcter, eol-first_chararcter)<<"]"<<std::endl;
if (first_chararcter<eol)
{
@ -772,11 +786,10 @@ void Shader::_computeShaderDefines()
std::string keyword = _shaderSource.substr(first_chararcter, end_of_keyword-first_chararcter);
std::string::size_type open_brackets = _shaderSource.find_first_of("(", end_of_keyword);
std::string::size_type close_brackets = _shaderSource.find_first_of(")", open_brackets);
if ((open_brackets!=std::string::npos) && (close_brackets!=std::string::npos) && (close_brackets<eol))
if ((open_brackets!=std::string::npos))
{
std::string str(_shaderSource, open_brackets+1, close_brackets-open_brackets-1);
std::string str(_shaderSource, open_brackets+1, eol-open_brackets-1);
// OSG_NOTICE<<" parameter str = ["<<str<<"]"<<std::endl;
if (keyword == "import_defines") _parseShaderDefines(str, _shaderDefines);
@ -785,7 +798,7 @@ void Shader::_computeShaderDefines()
//OSG_NOTICE<<" keyword not matched ["<<keyword<<"]"<<std::endl;
_parseShaderDefines(str, _shaderDefines);
}
#if 0
#if 1
for(ShaderDefines::iterator itr = _shaderDefines.begin();
itr != _shaderDefines.end();
++itr)
@ -802,7 +815,7 @@ void Shader::_computeShaderDefines()
#endif
}
#if 0
#if 1
else
{
OSG_NOTICE<<" Found keyword ["<<keyword<<"] but not matched ()\n"<<std::endl;

24
src/osg/State.cpp
View File

@ -517,9 +517,20 @@ void State::apply(const StateSet* dstate)
const Program::PerContextProgram* previousLastAppliedProgramObject = _lastAppliedProgramObject;
applyModeList(_modeMap,dstate->getModeList());
#if 1
pushDefineList(_defineMap, dstate->getDefineList());
#else
applyDefineList(_defineMap, dstate->getDefineList());
#endif
applyAttributeList(_attributeMap,dstate->getAttributeList());
if ((_lastAppliedProgramObject!=0) && (previousLastAppliedProgramObject==_lastAppliedProgramObject) && _defineMap.changed)
{
// OSG_NOTICE<<"State::apply(StateSet*) Program already applied ("<<(previousLastAppliedProgramObject==_lastAppliedProgramObject)<<") and _defineMap.changed= "<<_defineMap.changed<<std::endl;
_lastAppliedProgramObject->getProgram()->apply(*this);
}
if (_shaderCompositionEnabled)
{
if (previousLastAppliedProgramObject == _lastAppliedProgramObject || _lastAppliedProgramObject==0)
@ -545,6 +556,10 @@ void State::apply(const StateSet* dstate)
}
}
#if 1
popDefineList(_defineMap, dstate->getDefineList());
#endif
// pop the stateset from the stack
_stateStateStack.pop_back();
}
@ -576,10 +591,19 @@ void State::apply()
// appropriate.
applyModeMap(_modeMap);
const Program::PerContextProgram* previousLastAppliedProgramObject = _lastAppliedProgramObject;
// go through all active StateAttribute's, applying where appropriate.
applyAttributeMap(_attributeMap);
if ((_lastAppliedProgramObject!=0) && (previousLastAppliedProgramObject==_lastAppliedProgramObject) && _defineMap.changed)
{
//OSG_NOTICE<<"State::apply() Program already applied ("<<(previousLastAppliedProgramObject==_lastAppliedProgramObject)<<") and _defineMap.changed= "<<_defineMap.changed<<std::endl;
if (_lastAppliedProgramObject) _lastAppliedProgramObject->getProgram()->apply(*this);
}
if (_shaderCompositionEnabled)
{
applyShaderComposition();