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Collada alpha testing and uniforms

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This commit is contained in:
unelsson 2021-08-29 14:26:17 +03:00
parent 831055f878
commit b3d1d106af
1 changed files with 58 additions and 0 deletions
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58
components/resource/scenemanager.cpp
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@ -2,6 +2,7 @@
#include <cstdlib>
#include <osg/AlphaFunc>
#include <osg/Node>
#include <osg/UserDataContainer>
@ -217,7 +218,52 @@ namespace Resource
int mMaxAnisotropy;
};
// Check Collada extra descriptions
class ColladaAlphaTrickVisitor : public osg::NodeVisitor
{
public:
ColladaAlphaTrickVisitor()
: osg::NodeVisitor(TRAVERSE_ALL_CHILDREN)
{
}
osg::AlphaFunc::ComparisonFunction getTestMode(std::string mode)
{
if (mode == "ALWAYS") return osg::AlphaFunc::ALWAYS;
if (mode == "LESS") return osg::AlphaFunc::LESS;
if (mode == "EQUAL") return osg::AlphaFunc::EQUAL;
if (mode == "LEQUAL") return osg::AlphaFunc::LEQUAL;
if (mode == "GREATER") return osg::AlphaFunc::GREATER;
if (mode == "NOTEQUAL") return osg::AlphaFunc::NOTEQUAL;
if (mode == "GEQUAL") return osg::AlphaFunc::GEQUAL;
if (mode == "NEVER") return osg::AlphaFunc::NEVER;
Log(Debug::Info) << "Unexpected alpha testing mode: " << mode;
return osg::AlphaFunc::LEQUAL;
}
void apply(osg::Node& node) override
{
std::vector<std::string> descriptions = node.getDescriptions();
for (auto description : descriptions)
{
std::vector<std::string> descriptionParts;
std::istringstream descriptionStringStream(description);
for (std::string part; std::getline(descriptionStringStream, part, ' ');)
descriptionParts.emplace_back(part);
if (descriptionParts.at(0) == "alphatest")
{
osg::AlphaFunc::ComparisonFunction mode = getTestMode(descriptionParts.at(1));
osg::ref_ptr<osg::AlphaFunc> alphaFunc (new osg::AlphaFunc(mode, std::stod(descriptionParts.back())));
node.getOrCreateStateSet()->setAttributeAndModes(alphaFunc, osg::StateAttribute::ON);
Log(Debug::Info) << "Setting collada alpha test " << description << " for " << node.getName();
}
}
traverse(node);
}
};
SceneManager::SceneManager(const VFS::Manager *vfs, Resource::ImageManager* imageManager, Resource::NifFileManager* nifFileManager)
: ResourceManager(vfs)
@ -424,6 +470,18 @@ namespace Resource
if (nameFinder.mFoundNode)
nameFinder.mFoundNode->setNodeMask(hiddenNodeMask);
if (ext == "dae")
{
// Collada alpha testing
Resource::ColladaAlphaTrickVisitor colladaAlphaTrickVisitor;
result.getNode()->accept(colladaAlphaTrickVisitor);
result.getNode()->getOrCreateStateSet()->addUniform(new osg::Uniform("emissiveMult", 1.f));
result.getNode()->getOrCreateStateSet()->addUniform(new osg::Uniform("envMapColor", osg::Vec4f(1,1,1,1)));
result.getNode()->getOrCreateStateSet()->addUniform(new osg::Uniform("useFalloff", false));
}
return result.getNode();
}
}