70 lines
1.5 KiB
C++
70 lines
1.5 KiB
C++
#include <osgFX/Technique>
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#include <osgFX/Effect>
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#include <osg/GLExtensions>
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#include <osgUtil/CullVisitor>
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using namespace osgFX;
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Technique::Technique()
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: osg::Referenced()
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{
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}
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void Technique::addPass(osg::StateSet *ss)
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{
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if (ss) {
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passes_.push_back(ss);
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ss->setRenderBinDetails(static_cast<int>(passes_.size()), "RenderBin");
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}
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}
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bool Technique::validate(osg::State &) const
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{
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typedef std::vector<std::string> String_list;
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String_list extensions;
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getRequiredExtensions(extensions);
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for (String_list::const_iterator i=extensions.begin(); i!=extensions.end(); ++i) {
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if (!osg::isGLExtensionSupported(i->c_str())) return false;
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}
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return true;
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}
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void Technique::traverse_implementation(osg::NodeVisitor &nv, Effect *fx)
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{
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// define passes if necessary
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if (passes_.empty()) {
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define_passes();
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}
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// special actions must be taken if the node visitor is actually a CullVisitor
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osgUtil::CullVisitor *cv = dynamic_cast<osgUtil::CullVisitor *>(&nv);
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// traverse all passes
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for (int i=0; i<getNumPasses(); ++i) {
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// push the i-th pass' StateSet if necessary
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if (cv) {
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cv->pushStateSet(passes_[i].get());
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}
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// traverse the override node if defined, otherwise
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// traverse children as a Group would do
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osg::Node *override = getOverrideChild(i);
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if (override) {
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override->accept(nv);
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} else {
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fx->inherited_traverse(nv);
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}
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// pop the StateSet if necessary
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if (cv) {
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cv->popStateSet();
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}
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}
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}
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