void RigTransformSoftware::operator()(RigGeometry& geom)
{
if (_needInit)
if (!init(geom))
return;
if (!geom.getSourceGeometry()) {
OSG_WARN << this << " RigTransformSoftware no source geometry found on RigGeometry" << std::endl;
return;
}
osg::Geometry& source = *geom.getSourceGeometry();
osg::Geometry& destination = geom;
osg::Vec3Array* positionSrc = dynamic_cast<osg::Vec3Array*>(source.getVertexArray());
osg::Vec3Array* positionDst = dynamic_cast<osg::Vec3Array*>(destination.getVertexArray());
if (positionSrc && (!positionDst || (positionDst->size() != positionSrc->size()) ) )
{
if (!positionDst)
{
positionDst = new osg::Vec3Array;
positionDst->setDataVariance(osg::Object::DYNAMIC);
destination.setVertexArray(positionDst);
}
*positionDst = *positionSrc;
}
osg::Vec3Array* normalSrc = dynamic_cast<osg::Vec3Array*>(source.getNormalArray());
osg::Vec3Array* normalDst = dynamic_cast<osg::Vec3Array*>(destination.getNormalArray());
if (normalSrc && (!normalDst || (normalDst->size() != normalSrc->size()) ) )
{
if (!normalDst)
{
normalDst = new osg::Vec3Array;
normalDst->setDataVariance(osg::Object::DYNAMIC);
destination.setNormalArray(normalDst);
destination.setNormalBinding(osg::Geometry::BIND_PER_VERTEX);
}
*normalDst = *normalSrc;
}
if (positionDst && !positionDst->empty())
{
compute<osg::Vec3>(geom.getMatrixFromSkeletonToGeometry(),
geom.getInvMatrixFromSkeletonToGeometry(),
&positionSrc->front(),
&positionDst->front());
positionDst->dirty();
}
if (normalDst && !normalDst->empty())
{
computeNormal<osg::Vec3>(geom.getMatrixFromSkeletonToGeometry(),
geom.getInvMatrixFromSkeletonToGeometry(),
&normalSrc->front(),
&normalDst->front());
normalDst->dirty();
}
}
bool RigTransformSoftware::init(RigGeometry& geom)
{
if (!geom.getSkeleton())
return false;
BoneMapVisitor mapVisitor;
geom.getSkeleton()->accept(mapVisitor);
BoneMap bm = mapVisitor.getBoneMap();
initVertexSetFromBones(bm, geom.getVertexInfluenceSet().getUniqVertexSetToBoneSetList());
if (geom.getSourceGeometry())
geom.copyFrom(*geom.getSourceGeometry());
geom.setVertexArray(0);
geom.setNormalArray(0);
_needInit = false;
return true;
}
bool RigTransformHardware::init(RigGeometry& geom)
{
osg::Geometry& source = *geom.getSourceGeometry();
osg::Vec3Array* positionSrc = dynamic_cast<osg::Vec3Array*>(source.getVertexArray());
if (!positionSrc)
{
OSG_WARN << "RigTransformHardware no vertex array in the geometry " << geom.getName() << std::endl;
return false;
}
if (!geom.getSkeleton())
{
OSG_WARN << "RigTransformHardware no skeleton set in geometry " << geom.getName() << std::endl;
return false;
}
// copy shallow from source geometry to rig
geom.copyFrom(source);
BoneMapVisitor mapVisitor;
geom.getSkeleton()->accept(mapVisitor);
BoneMap bm = mapVisitor.getBoneMap();
if (!createPalette(positionSrc->size(),bm, geom.getVertexInfluenceSet().getVertexToBoneList()))
return false;
osg::ref_ptr<osg::Program> program = new osg::Program;
program->setName("HardwareSkinning");
if (!_shader.valid())
_shader = osg::Shader::readShaderFile(osg::Shader::VERTEX,"skinning.vert");
if (!_shader.valid()) {
OSG_WARN << "RigTransformHardware can't load VertexShader" << std::endl;
return false;
}
// replace max matrix by the value from uniform
{
std::string str = _shader->getShaderSource();
std::string toreplace = std::string("MAX_MATRIX");
std::size_t start = str.find(toreplace);
std::stringstream ss;
ss << getMatrixPaletteUniform()->getNumElements();
str.replace(start, toreplace.size(), ss.str());
_shader->setShaderSource(str);
OSG_INFO << "Shader " << str << std::endl;
}
int attribIndex = 11;
int nbAttribs = getNumVertexAttrib();
for (int i = 0; i < nbAttribs; i++)
{
std::stringstream ss;
ss << "boneWeight" << i;
program->addBindAttribLocation(ss.str(), attribIndex + i);
geom.setVertexAttribArray(attribIndex + i, getVertexAttrib(i));
OSG_INFO << "set vertex attrib " << ss.str() << std::endl;
}
program->addShader(_shader.get());
osg::ref_ptr<osg::StateSet> ss = geom.getOrCreateStateSet();
ss->addUniform(getMatrixPaletteUniform());
ss->addUniform(new osg::Uniform("nbBonesPerVertex", getNumBonesPerVertex()));
ss->setAttributeAndModes(program.get());
_needInit = false;
return true;
}