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openmw/components/nifosg/nifloader.cpp

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#include "nifloader.hpp"
#include <osg/Matrixf>
#include <osg/MatrixTransform>
#include <osg/Geode>
#include <osg/Geometry>
#include <osg/Array>
// resource
#include <components/misc/stringops.hpp>
#include <components/misc/resourcehelpers.hpp>
#include <components/resource/texturemanager.hpp>
// skel
#include <osgAnimation/MorphGeometry>
// particle
#include <osgParticle/ParticleSystem>
#include <osgParticle/ParticleSystemUpdater>
#include <osgParticle/ConstantRateCounter>
#include <osgParticle/ModularEmitter>
#include <osgParticle/Shooter>
#include <osgParticle/BoxPlacer>
#include <osgParticle/ModularProgram>
#include <osg/BlendFunc>
#include <osg/AlphaFunc>
#include <osg/Depth>
#include <osg/PolygonMode>
#include <osg/FrontFace>
#include <osg/Stencil>
#include <osg/Material>
#include <osg/Texture2D>
#include <osg/TexEnv>
#include <osg/TexEnvCombine>
#include <components/nif/node.hpp>
#include <components/sceneutil/util.hpp>
#include <components/sceneutil/skeleton.hpp>
#include <components/sceneutil/riggeometry.hpp>
#include "particle.hpp"
#include "userdata.hpp"
namespace
{
void getAllNiNodes(const Nif::Node* node, std::vector<int>& outIndices)
{
const Nif::NiNode* ninode = dynamic_cast<const Nif::NiNode*>(node);
if (ninode)
{
outIndices.push_back(ninode->recIndex);
for (unsigned int i=0; i<ninode->children.length(); ++i)
if (!ninode->children[i].empty())
getAllNiNodes(ninode->children[i].getPtr(), outIndices);
}
}
// Collect all properties affecting the given node that should be applied to an osg::Material.
void collectMaterialProperties(const Nif::Node* nifNode, std::vector<const Nif::Property*>& out)
{
const Nif::PropertyList& props = nifNode->props;
for (size_t i = 0; i <props.length();++i)
{
if (!props[i].empty())
{
switch (props[i]->recType)
{
case Nif::RC_NiMaterialProperty:
case Nif::RC_NiVertexColorProperty:
case Nif::RC_NiSpecularProperty:
out.push_back(props[i].getPtr());
break;
default:
break;
}
}
}
if (nifNode->parent)
collectMaterialProperties(nifNode->parent, out);
}
class FrameSwitch : public osg::Group
{
public:
FrameSwitch()
{
}
FrameSwitch(const FrameSwitch& copy, const osg::CopyOp& copyop)
: osg::Group(copy, copyop)
{
}
META_Object(NifOsg, FrameSwitch)
virtual void traverse(osg::NodeVisitor& nv)
{
const osg::FrameStamp* stamp = nv.getFrameStamp();
if (!stamp || nv.getTraversalMode() != osg::NodeVisitor::TRAVERSE_ACTIVE_CHILDREN)
osg::Group::traverse(nv);
else
{
for (unsigned int i=0; i<getNumChildren(); ++i)
{
if (i%2 == stamp->getFrameNumber()%2)
getChild(i)->accept(nv);
}
}
}
};
// NodeCallback used to have a transform always oriented towards the camera. Can have translation and scale
// set just like a regular MatrixTransform, but the rotation set will be overridden in order to face the camera.
class BillboardCallback : public osg::NodeCallback
{
public:
BillboardCallback()
{
}
BillboardCallback(const BillboardCallback& copy, const osg::CopyOp& copyop)
: osg::NodeCallback(copy, copyop)
{
}
META_Object(NifOsg, BillboardCallback)
virtual void operator()(osg::Node* node, osg::NodeVisitor* nv)
{
osgUtil::CullVisitor* cv = dynamic_cast<osgUtil::CullVisitor*>(nv);
osg::MatrixTransform* billboardNode = dynamic_cast<osg::MatrixTransform*>(node);
if (billboardNode && cv)
{
osg::Matrix modelView = *cv->getModelViewMatrix();
// attempt to preserve scale
float mag[3];
for (int i=0;i<3;++i)
{
mag[i] = std::sqrt(modelView(0,i) * modelView(0,i) + modelView(1,i) * modelView(1,i) + modelView(2,i) * modelView(2,i));
}
modelView.setRotate(osg::Quat());
modelView(0,0) = mag[0];
modelView(1,1) = mag[1];
modelView(2,2) = mag[2];
cv->pushModelViewMatrix(new osg::RefMatrix(modelView), osg::Transform::RELATIVE_RF);
traverse(node, nv);
cv->popModelViewMatrix();
}
else
traverse(node, nv);
}
};
struct UpdateMorphGeometry : public osg::Drawable::CullCallback
{
UpdateMorphGeometry()
{
}
UpdateMorphGeometry(const UpdateMorphGeometry& copy, const osg::CopyOp& copyop)
: osg::Drawable::CullCallback(copy, copyop)
{
}
META_Object(NifOsg, UpdateMorphGeometry)
virtual bool cull(osg::NodeVisitor *, osg::Drawable * drw, osg::State *) const
{
osgAnimation::MorphGeometry* geom = static_cast<osgAnimation::MorphGeometry*>(drw);
if (!geom)
return false;
geom->transformSoftwareMethod();
return false;
}
};
// Callback to return a static bounding box for a MorphGeometry. The idea is to not recalculate the bounding box
// every time the morph weights change. To do so we return a maximum containing box that is big enough for all possible combinations of morph targets.
class StaticBoundingBoxCallback : public osg::Drawable::ComputeBoundingBoxCallback
{
public:
StaticBoundingBoxCallback()
{
}
StaticBoundingBoxCallback(const osg::BoundingBox& bounds)
: mBoundingBox(bounds)
{
}
StaticBoundingBoxCallback(const StaticBoundingBoxCallback& copy, const osg::CopyOp& copyop)
: osg::Drawable::ComputeBoundingBoxCallback(copy, copyop)
, mBoundingBox(copy.mBoundingBox)
{
}
META_Object(NifOsg, StaticBoundingBoxCallback)
virtual osg::BoundingBox computeBound(const osg::Drawable&) const
{
return mBoundingBox;
}
private:
osg::BoundingBox mBoundingBox;
};
void extractTextKeys(const Nif::NiTextKeyExtraData *tk, NifOsg::TextKeyMap &textkeys)
{
for(size_t i = 0;i < tk->list.size();i++)
{
const std::string &str = tk->list[i].text;
std::string::size_type pos = 0;
while(pos < str.length())
{
if(::isspace(str[pos]))
{
pos++;
continue;
}
std::string::size_type nextpos = std::min(str.find('\r', pos), str.find('\n', pos));
if(nextpos != std::string::npos)
{
do {
nextpos--;
} while(nextpos > pos && ::isspace(str[nextpos]));
nextpos++;
}
else if(::isspace(*str.rbegin()))
{
std::string::const_iterator last = str.end();
do {
--last;
} while(last != str.begin() && ::isspace(*last));
nextpos = std::distance(str.begin(), ++last);
}
std::string result = str.substr(pos, nextpos-pos);
textkeys.insert(std::make_pair(tk->list[i].time, Misc::StringUtils::toLower(result)));
pos = nextpos;
}
}
}
}
namespace NifOsg
{
bool Loader::sShowMarkers = false;
void Loader::setShowMarkers(bool show)
{
sShowMarkers = show;
}
bool Loader::getShowMarkers()
{
return sShowMarkers;
}
class LoaderImpl
{
public:
/// @param filename used for warning messages.
LoaderImpl(const std::string& filename)
: mFilename(filename)
{
}
std::string mFilename;
static void loadKf(Nif::NIFFilePtr nif, KeyframeHolder& target)
{
if(nif->numRoots() < 1)
{
nif->warn("Found no root nodes");
return;
}
const Nif::Record *r = nif->getRoot(0);
assert(r != NULL);
if(r->recType != Nif::RC_NiSequenceStreamHelper)
{
nif->warn("First root was not a NiSequenceStreamHelper, but a "+
r->recName+".");
return;
}
const Nif::NiSequenceStreamHelper *seq = static_cast<const Nif::NiSequenceStreamHelper*>(r);
Nif::ExtraPtr extra = seq->extra;
if(extra.empty() || extra->recType != Nif::RC_NiTextKeyExtraData)
{
nif->warn("First extra data was not a NiTextKeyExtraData, but a "+
(extra.empty() ? std::string("nil") : extra->recName)+".");
return;
}
extractTextKeys(static_cast<const Nif::NiTextKeyExtraData*>(extra.getPtr()), target.mTextKeys);
extra = extra->extra;
Nif::ControllerPtr ctrl = seq->controller;
for(;!extra.empty() && !ctrl.empty();(extra=extra->extra),(ctrl=ctrl->next))
{
if(extra->recType != Nif::RC_NiStringExtraData || ctrl->recType != Nif::RC_NiKeyframeController)
{
nif->warn("Unexpected extra data "+extra->recName+" with controller "+ctrl->recName);
continue;
}
if (!(ctrl->flags & Nif::NiNode::ControllerFlag_Active))
continue;
const Nif::NiStringExtraData *strdata = static_cast<const Nif::NiStringExtraData*>(extra.getPtr());
const Nif::NiKeyframeController *key = static_cast<const Nif::NiKeyframeController*>(ctrl.getPtr());
if(key->data.empty())
continue;
osg::ref_ptr<NifOsg::KeyframeController> callback(new NifOsg::KeyframeController(key->data.getPtr()));
callback->setFunction(boost::shared_ptr<NifOsg::ControllerFunction>(new NifOsg::ControllerFunction(key)));
target.mKeyframeControllers[strdata->string] = callback;
}
}
osg::ref_ptr<osg::Node> load(Nif::NIFFilePtr nif, Resource::TextureManager* textureManager)
{
if (nif->numRoots() < 1)
nif->fail("Found no root nodes");
const Nif::Record* r = nif->getRoot(0);
const Nif::Node* nifNode = dynamic_cast<const Nif::Node*>(r);
if (nifNode == NULL)
nif->fail("First root was not a node, but a " + r->recName);
osg::ref_ptr<TextKeyMapHolder> textkeys (new TextKeyMapHolder);
osg::ref_ptr<osg::Node> created = handleNode(nifNode, NULL, textureManager, std::vector<int>(), 0, 0, false, &textkeys->mTextKeys);
if (nif->getUseSkinning())
{
osg::ref_ptr<SceneUtil::Skeleton> skel = new SceneUtil::Skeleton;
skel->addChild(created);
created = skel;
}
created->getOrCreateUserDataContainer()->addUserObject(textkeys);
return created;
}
void applyNodeProperties(const Nif::Node *nifNode, osg::Node *applyTo, SceneUtil::CompositeStateSetUpdater* composite, Resource::TextureManager* textureManager, std::vector<int>& boundTextures, int animflags)
{
const Nif::PropertyList& props = nifNode->props;
for (size_t i = 0; i <props.length();++i)
{
if (!props[i].empty())
handleProperty(props[i].getPtr(), applyTo, composite, textureManager, boundTextures, animflags);
}
}
void setupController(const Nif::Controller* ctrl, SceneUtil::Controller* toSetup, int animflags)
{
bool autoPlay = animflags & Nif::NiNode::AnimFlag_AutoPlay;
if (autoPlay)
toSetup->setSource(boost::shared_ptr<SceneUtil::ControllerSource>(new SceneUtil::FrameTimeSource));
toSetup->setFunction(boost::shared_ptr<ControllerFunction>(new ControllerFunction(ctrl)));
}
void optimize (const Nif::Node* nifNode, osg::Group* node, bool skipMeshes)
{
// For nodes with an identity transform, remove the redundant Transform node
if (node->getDataVariance() == osg::Object::STATIC
// For TriShapes, we can only collapse the node, but not completely remove it,
// if the link to animated collision shapes is supposed to stay intact.
&& (nifNode->recType != Nif::RC_NiTriShape || !skipMeshes))
{
if (node->getNumParents() && nifNode->trafo.isIdentity())
{
osg::Group* parent = node->getParent(0);
// can be multiple children in case of ParticleSystems, with the extra ParticleSystemUpdater node
for (unsigned int i=0; i<node->getNumChildren(); ++i)
{
osg::Node* child = node->getChild(i);
if (i == node->getNumChildren()-1) // FIXME: some nicer way to determine where our actual Drawable resides...
{
child->addUpdateCallback(node->getUpdateCallback());
child->setStateSet(node->getStateSet());
child->setName(node->getName());
// make sure to copy the UserDataContainer with the record index, so that connections to an animated collision shape don't break
child->setUserDataContainer(node->getUserDataContainer());
}
parent->addChild(child);
}
node->removeChildren(0, node->getNumChildren());
parent->removeChild(node);
}
}
// For NiTriShapes *with* a valid transform, perhaps we could apply the transform to the vertices.
// Need to make sure that won't break transparency sorting. Check what the original engine is doing?
}
osg::ref_ptr<osg::Node> handleNode(const Nif::Node* nifNode, osg::Group* parentNode, Resource::TextureManager* textureManager,
std::vector<int> boundTextures, int animflags, int particleflags, bool skipMeshes, TextKeyMap* textKeys, osg::Node* rootNode=NULL)
{
osg::ref_ptr<osg::Group> node = new osg::MatrixTransform(nifNode->trafo.toMatrix());
// Set a default DataVariance (used as hint by optimization routines).
switch (nifNode->recType)
{
case Nif::RC_NiTriShape:
case Nif::RC_NiAutoNormalParticles:
case Nif::RC_NiRotatingParticles:
// Leaf nodes in the NIF hierarchy, so won't be able to dynamically attach children.
// No support for keyframe controllers (just crashes in the original engine).
node->setDataVariance(osg::Object::STATIC);
break;
default:
// could have new children attached at any time, or added external keyframe controllers from .kf files
node->setDataVariance(osg::Object::DYNAMIC);
break;
}
if (nifNode->recType == Nif::RC_NiBillboardNode)
{
node->addCullCallback(new BillboardCallback);
}
else if (!rootNode && nifNode->controller.empty() && nifNode->trafo.isIdentity())
{
// The Root node can be created as a Group if no transformation is required.
// This takes advantage of the fact root nodes can't have additional controllers
// loaded from an external .kf file (original engine just throws "can't find node" errors if you try).
node = new osg::Group;
node->setDataVariance(osg::Object::STATIC);
}
node->setName(nifNode->name);
if (parentNode)
parentNode->addChild(node);
if (!rootNode)
rootNode = node;
// UserData used for a variety of features:
// - finding the correct emitter node for a particle system
// - establishing connections to the animated collision shapes, which are handled in a separate loader
// - finding a random child NiNode in NiBspArrayController
// - storing the previous 3x3 rotation and scale values for when a KeyframeController wants to
// change only certain elements of the 4x4 transform
node->getOrCreateUserDataContainer()->addUserObject(
new NodeUserData(nifNode->recIndex, nifNode->trafo.scale, nifNode->trafo.rotation));
for (Nif::ExtraPtr e = nifNode->extra; !e.empty(); e = e->extra)
{
if(e->recType == Nif::RC_NiTextKeyExtraData && textKeys)
{
const Nif::NiTextKeyExtraData *tk = static_cast<const Nif::NiTextKeyExtraData*>(e.getPtr());
extractTextKeys(tk, *textKeys);
}
else if(e->recType == Nif::RC_NiStringExtraData)
{
const Nif::NiStringExtraData *sd = static_cast<const Nif::NiStringExtraData*>(e.getPtr());
// String markers may contain important information
// affecting the entire subtree of this obj
if(sd->string == "MRK" && !Loader::getShowMarkers())
{
// Marker objects. These meshes are only visible in the editor.
skipMeshes = true;
}
}
}
if (nifNode->recType == Nif::RC_NiBSAnimationNode)
animflags |= nifNode->flags;
if (nifNode->recType == Nif::RC_NiBSParticleNode)
particleflags |= nifNode->flags;
// Hide collision shapes, but don't skip the subgraph
// We still need to animate the hidden bones so the physics system can access them
if (nifNode->recType == Nif::RC_RootCollisionNode)
{
skipMeshes = true;
// Leave mask for UpdateVisitor enabled
node->setNodeMask(0x1);
}
// We can skip creating meshes for hidden nodes if they don't have a VisController that
// might make them visible later
if (nifNode->flags & Nif::NiNode::Flag_Hidden)
{
bool hasVisController = false;
for (Nif::ControllerPtr ctrl = nifNode->controller; !ctrl.empty(); ctrl = ctrl->next)
hasVisController = (ctrl->recType == Nif::RC_NiVisController);
if (!hasVisController)
skipMeshes = true; // skip child meshes, but still create the child node hierarchy for animating collision shapes
// now hide this node, but leave the mask for UpdateVisitor enabled so that KeyframeController works
node->setNodeMask(0x1);
}
osg::ref_ptr<SceneUtil::CompositeStateSetUpdater> composite = new SceneUtil::CompositeStateSetUpdater;
applyNodeProperties(nifNode, node, composite, textureManager, boundTextures, animflags);
if (nifNode->recType == Nif::RC_NiTriShape && !skipMeshes)
{
const Nif::NiTriShape* triShape = static_cast<const Nif::NiTriShape*>(nifNode);
if (triShape->skin.empty())
handleTriShape(triShape, node, composite, boundTextures, animflags);
else
handleSkinnedTriShape(triShape, node, composite, boundTextures, animflags);
if (!nifNode->controller.empty())
handleMeshControllers(nifNode, composite, boundTextures, animflags);
}
if(nifNode->recType == Nif::RC_NiAutoNormalParticles || nifNode->recType == Nif::RC_NiRotatingParticles)
handleParticleSystem(nifNode, node, composite, animflags, particleflags, rootNode);
if (composite->getNumControllers() > 0)
node->addUpdateCallback(composite);
// Note: NiTriShapes are not allowed to have KeyframeControllers (the vanilla engine just crashes when there is one).
// We can take advantage of this constraint for optimizations later.
if (!nifNode->controller.empty() && node->getDataVariance() == osg::Object::DYNAMIC)
handleNodeControllers(nifNode, static_cast<osg::MatrixTransform*>(node.get()), animflags);
// Optimization pass
optimize(nifNode, node, skipMeshes);
const Nif::NiNode *ninode = dynamic_cast<const Nif::NiNode*>(nifNode);
if(ninode)
{
const Nif::NodeList &children = ninode->children;
for(size_t i = 0;i < children.length();++i)
{
if(!children[i].empty())
{
handleNode(children[i].getPtr(), node, textureManager, boundTextures, animflags, particleflags, skipMeshes, textKeys, rootNode);
}
}
}
return node;
}
void handleMeshControllers(const Nif::Node *nifNode, SceneUtil::CompositeStateSetUpdater* composite, const std::vector<int> &boundTextures, int animflags)
{
for (Nif::ControllerPtr ctrl = nifNode->controller; !ctrl.empty(); ctrl = ctrl->next)
{
if (!(ctrl->flags & Nif::NiNode::ControllerFlag_Active))
continue;
if (ctrl->recType == Nif::RC_NiUVController)
{
const Nif::NiUVController *uvctrl = static_cast<const Nif::NiUVController*>(ctrl.getPtr());
std::set<int> texUnits;
for (unsigned int i=0; i<boundTextures.size(); ++i)
texUnits.insert(i);
osg::ref_ptr<UVController> ctrl = new UVController(uvctrl->data.getPtr(), texUnits);
setupController(uvctrl, ctrl, animflags);
composite->addController(ctrl);
}
}
}
void handleNodeControllers(const Nif::Node* nifNode, osg::MatrixTransform* transformNode, int animflags)
{
for (Nif::ControllerPtr ctrl = nifNode->controller; !ctrl.empty(); ctrl = ctrl->next)
{
if (!(ctrl->flags & Nif::NiNode::ControllerFlag_Active))
continue;
if (ctrl->recType == Nif::RC_NiKeyframeController)
{
const Nif::NiKeyframeController *key = static_cast<const Nif::NiKeyframeController*>(ctrl.getPtr());
if(!key->data.empty())
{
osg::ref_ptr<KeyframeController> callback(new KeyframeController(key->data.getPtr()));
setupController(key, callback, animflags);
transformNode->addUpdateCallback(callback);
}
}
else if (ctrl->recType == Nif::RC_NiVisController)
{
const Nif::NiVisController* visctrl = static_cast<const Nif::NiVisController*>(ctrl.getPtr());
osg::ref_ptr<VisController> callback(new VisController(visctrl->data.getPtr()));
setupController(visctrl, callback, animflags);
transformNode->addUpdateCallback(callback);
}
}
}
void handleMaterialControllers(const Nif::Property *materialProperty, SceneUtil::CompositeStateSetUpdater* composite, int animflags)
{
for (Nif::ControllerPtr ctrl = materialProperty->controller; !ctrl.empty(); ctrl = ctrl->next)
{
if (!(ctrl->flags & Nif::NiNode::ControllerFlag_Active))
continue;
if (ctrl->recType == Nif::RC_NiAlphaController)
{
const Nif::NiAlphaController* alphactrl = static_cast<const Nif::NiAlphaController*>(ctrl.getPtr());
osg::ref_ptr<AlphaController> ctrl(new AlphaController(alphactrl->data.getPtr()));
setupController(alphactrl, ctrl, animflags);
composite->addController(ctrl);
}
else if (ctrl->recType == Nif::RC_NiMaterialColorController)
{
const Nif::NiMaterialColorController* matctrl = static_cast<const Nif::NiMaterialColorController*>(ctrl.getPtr());
osg::ref_ptr<MaterialColorController> ctrl(new MaterialColorController(matctrl->data.getPtr()));
setupController(matctrl, ctrl, animflags);
composite->addController(ctrl);
}
else
std::cerr << "Unexpected material controller " << ctrl->recType << " in " << mFilename << std::endl;
}
}
void handleTextureControllers(const Nif::Property *texProperty, SceneUtil::CompositeStateSetUpdater* composite, Resource::TextureManager* textureManager, osg::StateSet *stateset, int animflags)
{
for (Nif::ControllerPtr ctrl = texProperty->controller; !ctrl.empty(); ctrl = ctrl->next)
{
if (!(ctrl->flags & Nif::NiNode::ControllerFlag_Active))
continue;
if (ctrl->recType == Nif::RC_NiFlipController)
{
const Nif::NiFlipController* flipctrl = static_cast<const Nif::NiFlipController*>(ctrl.getPtr());
std::vector<osg::ref_ptr<osg::Texture2D> > textures;
for (unsigned int i=0; i<flipctrl->mSources.length(); ++i)
{
Nif::NiSourceTexturePtr st = flipctrl->mSources[i];
if (st.empty())
continue;
// inherit wrap settings from the target slot
osg::Texture2D* inherit = dynamic_cast<osg::Texture2D*>(stateset->getTextureAttribute(flipctrl->mTexSlot, osg::StateAttribute::TEXTURE));
osg::Texture2D::WrapMode wrapS = osg::Texture2D::CLAMP;
osg::Texture2D::WrapMode wrapT = osg::Texture2D::CLAMP;
if (inherit)
{
wrapS = inherit->getWrap(osg::Texture2D::WRAP_S);
wrapT = inherit->getWrap(osg::Texture2D::WRAP_T);
}
std::string filename = Misc::ResourceHelpers::correctTexturePath(st->filename, textureManager->getVFS());
osg::ref_ptr<osg::Texture2D> texture = textureManager->getTexture2D(filename, wrapS, wrapT);
textures.push_back(texture);
}
osg::ref_ptr<FlipController> callback(new FlipController(flipctrl, textures));
setupController(ctrl.getPtr(), callback, animflags);
composite->addController(callback);
}
else
std::cerr << "Unexpected texture controller " << ctrl->recName << " in " << mFilename << std::endl;
}
}
void handleParticlePrograms(Nif::ExtraPtr affectors, Nif::ExtraPtr colliders, osg::Group *attachTo, osgParticle::ParticleSystem* partsys, osgParticle::ParticleProcessor::ReferenceFrame rf)
{
osgParticle::ModularProgram* program = new osgParticle::ModularProgram;
attachTo->addChild(program);
program->setParticleSystem(partsys);
program->setReferenceFrame(rf);
for (; !affectors.empty(); affectors = affectors->extra)
{
if (affectors->recType == Nif::RC_NiParticleGrowFade)
{
const Nif::NiParticleGrowFade *gf = static_cast<const Nif::NiParticleGrowFade*>(affectors.getPtr());
program->addOperator(new GrowFadeAffector(gf->growTime, gf->fadeTime));
}
else if (affectors->recType == Nif::RC_NiGravity)
{
const Nif::NiGravity* gr = static_cast<const Nif::NiGravity*>(affectors.getPtr());
program->addOperator(new GravityAffector(gr));
}
else if (affectors->recType == Nif::RC_NiParticleColorModifier)
{
const Nif::NiParticleColorModifier *cl = static_cast<const Nif::NiParticleColorModifier*>(affectors.getPtr());
const Nif::NiColorData *clrdata = cl->data.getPtr();
program->addOperator(new ParticleColorAffector(clrdata));
}
else if (affectors->recType == Nif::RC_NiParticleRotation)
{
// unused
}
else
std::cerr << "Unhandled particle modifier " << affectors->recName << " in " << mFilename << std::endl;
}
for (; !colliders.empty(); colliders = colliders->extra)
{
if (colliders->recType == Nif::RC_NiPlanarCollider)
{
const Nif::NiPlanarCollider* planarcollider = static_cast<const Nif::NiPlanarCollider*>(colliders.getPtr());
program->addOperator(new PlanarCollider(planarcollider));
}
}
}
// Load the initial state of the particle system, i.e. the initial particles and their positions, velocity and colors.
void handleParticleInitialState(const Nif::Node* nifNode, osgParticle::ParticleSystem* partsys, const Nif::NiParticleSystemController* partctrl)
{
const Nif::NiAutoNormalParticlesData *particledata = NULL;
if(nifNode->recType == Nif::RC_NiAutoNormalParticles)
particledata = static_cast<const Nif::NiAutoNormalParticles*>(nifNode)->data.getPtr();
else if(nifNode->recType == Nif::RC_NiRotatingParticles)
particledata = static_cast<const Nif::NiRotatingParticles*>(nifNode)->data.getPtr();
else
return;
int i=0;
for (std::vector<Nif::NiParticleSystemController::Particle>::const_iterator it = partctrl->particles.begin();
i<particledata->activeCount && it != partctrl->particles.end(); ++it, ++i)
{
const Nif::NiParticleSystemController::Particle& particle = *it;
ParticleAgeSetter particletemplate(std::max(0.f, particle.lifetime));
osgParticle::Particle* created = partsys->createParticle(&particletemplate);
created->setLifeTime(std::max(0.f, particle.lifespan));
// Note this position and velocity is not correct for a particle system with absolute reference frame,
// which can not be done in this loader since we are not attached to the scene yet. Will be fixed up post-load in the SceneManager.
created->setVelocity(particle.velocity);
created->setPosition(particledata->vertices->at(particle.vertex));
osg::Vec4f partcolor (1.f,1.f,1.f,1.f);
if (particle.vertex < int(particledata->colors->size()))
partcolor = particledata->colors->at(particle.vertex);
float size = particledata->sizes.at(particle.vertex) * partctrl->size;
created->setSizeRange(osgParticle::rangef(size, size));
}
osg::BoundingBox box;
box.expandBy(osg::BoundingSphere(osg::Vec3(0,0,0), particledata->radius));
partsys->setInitialBound(box);
}
osg::ref_ptr<Emitter> handleParticleEmitter(const Nif::NiParticleSystemController* partctrl)
{
std::vector<int> targets;
if (partctrl->recType == Nif::RC_NiBSPArrayController)
{
getAllNiNodes(partctrl->emitter.getPtr(), targets);
}
osg::ref_ptr<Emitter> emitter = new Emitter(targets);
osgParticle::ConstantRateCounter* counter = new osgParticle::ConstantRateCounter;
if (partctrl->emitFlags & Nif::NiParticleSystemController::NoAutoAdjust)
counter->setNumberOfParticlesPerSecondToCreate(partctrl->emitRate);
else
counter->setNumberOfParticlesPerSecondToCreate(partctrl->numParticles / (partctrl->lifetime + partctrl->lifetimeRandom/2));
emitter->setCounter(counter);
ParticleShooter* shooter = new ParticleShooter(partctrl->velocity - partctrl->velocityRandom*0.5f,
partctrl->velocity + partctrl->velocityRandom*0.5f,
partctrl->horizontalDir, partctrl->horizontalAngle,
partctrl->verticalDir, partctrl->verticalAngle,
partctrl->lifetime, partctrl->lifetimeRandom);
emitter->setShooter(shooter);
osgParticle::BoxPlacer* placer = new osgParticle::BoxPlacer;
placer->setXRange(-partctrl->offsetRandom.x(), partctrl->offsetRandom.x());
placer->setYRange(-partctrl->offsetRandom.y(), partctrl->offsetRandom.y());
placer->setZRange(-partctrl->offsetRandom.z(), partctrl->offsetRandom.z());
emitter->setPlacer(placer);
return emitter;
}
void handleParticleSystem(const Nif::Node *nifNode, osg::Group *parentNode, SceneUtil::CompositeStateSetUpdater* composite, int animflags, int particleflags, osg::Node* rootNode)
{
osg::ref_ptr<ParticleSystem> partsys (new ParticleSystem);
partsys->setSortMode(osgParticle::ParticleSystem::SORT_BACK_TO_FRONT);
const Nif::NiParticleSystemController* partctrl = NULL;
for (Nif::ControllerPtr ctrl = nifNode->controller; !ctrl.empty(); ctrl = ctrl->next)
{
if (!(ctrl->flags & Nif::NiNode::ControllerFlag_Active))
continue;
if(ctrl->recType == Nif::RC_NiParticleSystemController || ctrl->recType == Nif::RC_NiBSPArrayController)
partctrl = static_cast<Nif::NiParticleSystemController*>(ctrl.getPtr());
}
if (!partctrl)
{
std::cerr << "No particle controller found in " << mFilename << std::endl;
return;
}
osgParticle::ParticleProcessor::ReferenceFrame rf = (particleflags & Nif::NiNode::ParticleFlag_LocalSpace)
? osgParticle::ParticleProcessor::RELATIVE_RF
: osgParticle::ParticleProcessor::ABSOLUTE_RF;
// HACK: ParticleSystem has no setReferenceFrame method
if (rf == osgParticle::ParticleProcessor::ABSOLUTE_RF)
{
partsys->getOrCreateUserDataContainer()->addDescription("worldspace");
}
handleParticleInitialState(nifNode, partsys, partctrl);
partsys->setQuota(partctrl->numParticles);
partsys->getDefaultParticleTemplate().setSizeRange(osgParticle::rangef(partctrl->size, partctrl->size));
partsys->getDefaultParticleTemplate().setColorRange(osgParticle::rangev4(osg::Vec4f(1.f,1.f,1.f,1.f), osg::Vec4f(1.f,1.f,1.f,1.f)));
partsys->getDefaultParticleTemplate().setAlphaRange(osgParticle::rangef(1.f, 1.f));
partsys->setFreezeOnCull(true);
osg::ref_ptr<Emitter> emitter = handleParticleEmitter(partctrl);
emitter->setParticleSystem(partsys);
emitter->setReferenceFrame(osgParticle::ParticleProcessor::RELATIVE_RF);
// Note: we assume that the Emitter node is placed *before* the Particle node in the scene graph.
// This seems to be true for all NIF files in the game that I've checked, suggesting that NIFs work similar to OSG with regards to update order.
// If something ever violates this assumption, the worst that could happen is the culling being one frame late, which wouldn't be a disaster.
FindRecIndexVisitor find (partctrl->emitter->recIndex);
rootNode->accept(find);
if (!find.mFound)
{
std::cerr << "can't find emitter node, wrong node order? in " << mFilename << std::endl;
return;
}
osg::Group* emitterNode = find.mFound;
// Emitter attached to the emitter node. Note one side effect of the emitter using the CullVisitor is that hiding its node
// actually causes the emitter to stop firing. Convenient, because MW behaves this way too!
emitterNode->addChild(emitter);
osg::ref_ptr<ParticleSystemController> callback(new ParticleSystemController(partctrl));
setupController(partctrl, callback, animflags);
emitter->setUpdateCallback(callback);
// affectors must be attached *after* the emitter in the scene graph for correct update order
// attach to same node as the ParticleSystem, we need osgParticle Operators to get the correct
// localToWorldMatrix for transforming to particle space
handleParticlePrograms(partctrl->affectors, partctrl->colliders, parentNode, partsys.get(), rf);
osg::ref_ptr<osg::Geode> geode (new osg::Geode);
geode->addDrawable(partsys);
std::vector<const Nif::Property*> materialProps;
collectMaterialProperties(nifNode, materialProps);
applyMaterialProperties(parentNode, materialProps, composite, true, animflags);
// Particles don't have normals, so can't be diffuse lit.
osg::Material* mat = static_cast<osg::Material*>(parentNode->getStateSet()->getAttribute(osg::StateAttribute::MATERIAL));
if (mat)
{
// NB ignoring diffuse.a()
mat->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4f(0,0,0,1));
mat->setColorMode(osg::Material::AMBIENT);
}
// particle system updater (after the emitters and affectors in the scene graph)
// I think for correct culling needs to be *before* the ParticleSystem, though osg examples do it the other way
osg::ref_ptr<osgParticle::ParticleSystemUpdater> updater = new osgParticle::ParticleSystemUpdater;
updater->addParticleSystem(partsys);
parentNode->addChild(updater);
if (rf == osgParticle::ParticleProcessor::RELATIVE_RF)
parentNode->addChild(geode);
else
{
osg::MatrixTransform* trans = new osg::MatrixTransform;
trans->setUpdateCallback(new InverseWorldMatrix);
trans->addChild(geode);
parentNode->addChild(trans);
}
}
void triShapeToGeometry(const Nif::NiTriShape *triShape, osg::Geometry *geometry, osg::Node* parentNode, SceneUtil::CompositeStateSetUpdater* composite, const std::vector<int>& boundTextures, int animflags)
{
const Nif::NiTriShapeData* data = triShape->data.getPtr();
geometry->setVertexArray(data->vertices);
if (!data->normals->empty())
geometry->setNormalArray(data->normals);
int textureStage = 0;
for (std::vector<int>::const_iterator it = boundTextures.begin(); it != boundTextures.end(); ++it,++textureStage)
{
int uvSet = *it;
if (uvSet >= (int)data->uvlist.size())
{
std::cerr << "Warning: using an undefined UV set " << uvSet << " on TriShape " << triShape->name << " in " << mFilename << std::endl;
continue;
}
geometry->setTexCoordArray(textureStage, data->uvlist[uvSet]);
}
if (!data->colors->empty())
geometry->setColorArray(data->colors);
if (!data->triangles->empty())
geometry->addPrimitiveSet(data->triangles);
// osg::Material properties are handled here for two reasons:
// - if there are no vertex colors, we need to disable colorMode.
// - there are 3 "overlapping" nif properties that all affect the osg::Material, handling them
// above the actual renderable would be tedious.
std::vector<const Nif::Property*> materialProps;
collectMaterialProperties(triShape, materialProps);
applyMaterialProperties(parentNode, materialProps, composite, !data->colors->empty(), animflags);
}
void handleTriShape(const Nif::NiTriShape* triShape, osg::Group* parentNode, SceneUtil::CompositeStateSetUpdater* composite, const std::vector<int>& boundTextures, int animflags)
{
osg::ref_ptr<osg::Geometry> geometry;
if(!triShape->controller.empty())
{
Nif::ControllerPtr ctrl = triShape->controller;
do {
if(ctrl->recType == Nif::RC_NiGeomMorpherController && ctrl->flags & Nif::NiNode::ControllerFlag_Active)
{
geometry = handleMorphGeometry(static_cast<const Nif::NiGeomMorpherController*>(ctrl.getPtr()));
osg::ref_ptr<GeomMorpherController> morphctrl = new GeomMorpherController(
static_cast<const Nif::NiGeomMorpherController*>(ctrl.getPtr())->data.getPtr());
setupController(ctrl.getPtr(), morphctrl, animflags);
geometry->setUpdateCallback(morphctrl);
break;
}
} while(!(ctrl=ctrl->next).empty());
}
if (!geometry.get())
geometry = new osg::Geometry;
osg::ref_ptr<osg::Geode> geode (new osg::Geode);
triShapeToGeometry(triShape, geometry, parentNode, composite, boundTextures, animflags);
geode->addDrawable(geometry);
if (geometry->getDataVariance() == osg::Object::DYNAMIC)
{
// Add a copy, we will alternate between the two copies every other frame using the FrameSwitch
// This is so we can set the DataVariance as STATIC, giving a huge performance boost
geometry->setDataVariance(osg::Object::STATIC);
osg::ref_ptr<osg::Geode> geode2 = static_cast<osg::Geode*>(osg::clone(geode.get(), osg::CopyOp::DEEP_COPY_NODES|osg::CopyOp::DEEP_COPY_DRAWABLES));
osg::ref_ptr<FrameSwitch> frameswitch = new FrameSwitch;
frameswitch->addChild(geode);
frameswitch->addChild(geode2);
parentNode->addChild(frameswitch);
}
else
parentNode->addChild(geode);
}
osg::ref_ptr<osg::Geometry> handleMorphGeometry(const Nif::NiGeomMorpherController* morpher)
{
osg::ref_ptr<osgAnimation::MorphGeometry> morphGeom = new osgAnimation::MorphGeometry;
morphGeom->setMethod(osgAnimation::MorphGeometry::RELATIVE);
// No normals available in the MorphData
morphGeom->setMorphNormals(false);
morphGeom->setUpdateCallback(NULL);
morphGeom->setCullCallback(new UpdateMorphGeometry);
const std::vector<Nif::NiMorphData::MorphData>& morphs = morpher->data.getPtr()->mMorphs;
if (!morphs.size())
return morphGeom;
// Note we are not interested in morph 0, which just contains the original vertices
for (unsigned int i = 1; i < morphs.size(); ++i)
{
osg::ref_ptr<osg::Geometry> morphTarget = new osg::Geometry;
morphTarget->setVertexArray(morphs[i].mVertices);
morphGeom->addMorphTarget(morphTarget, 0.f);
}
// build the bounding box containing all possible morph combinations
std::vector<osg::BoundingBox> vertBounds(morphs[0].mVertices->size());
// Since we don't know what combinations of morphs are being applied we need to keep track of a bounding box for each vertex.
// The minimum/maximum of the box is the minimum/maximum offset the vertex can have from its starting position.
// Start with zero offsets which will happen when no morphs are applied.
for (unsigned int i=0; i<vertBounds.size(); ++i)
vertBounds[i].set(osg::Vec3f(0,0,0), osg::Vec3f(0,0,0));
for (unsigned int i = 1; i < morphs.size(); ++i)
{
for (unsigned int j=0; j<morphs[i].mVertices->size() && vertBounds.size(); ++j)
{
osg::BoundingBox& bounds = vertBounds[j];
bounds.expandBy(bounds._max + (*morphs[i].mVertices)[j]);
bounds.expandBy(bounds._min + (*morphs[i].mVertices)[j]);
}
}
osg::BoundingBox box;
for (unsigned int i=0; i<vertBounds.size(); ++i)
{
vertBounds[i]._max += (*morphs[0].mVertices)[i];
vertBounds[i]._min += (*morphs[0].mVertices)[i];
box.expandBy(vertBounds[i]);
}
morphGeom->setComputeBoundingBoxCallback(new StaticBoundingBoxCallback(box));
return morphGeom;
}
void handleSkinnedTriShape(const Nif::NiTriShape *triShape, osg::Group *parentNode, SceneUtil::CompositeStateSetUpdater* composite,
const std::vector<int>& boundTextures, int animflags)
{
osg::ref_ptr<osg::Geode> geode (new osg::Geode);
osg::ref_ptr<osg::Geometry> geometry (new osg::Geometry);
triShapeToGeometry(triShape, geometry, parentNode, composite, boundTextures, animflags);
osg::ref_ptr<SceneUtil::RigGeometry> rig(new SceneUtil::RigGeometry);
rig->setSourceGeometry(geometry);
const Nif::NiSkinInstance *skin = triShape->skin.getPtr();
// Assign bone weights
osg::ref_ptr<SceneUtil::RigGeometry::InfluenceMap> map (new SceneUtil::RigGeometry::InfluenceMap);
const Nif::NiSkinData *data = skin->data.getPtr();
const Nif::NodeList &bones = skin->bones;
for(size_t i = 0;i < bones.length();i++)
{
std::string boneName = bones[i].getPtr()->name;
SceneUtil::RigGeometry::BoneInfluence influence;
const std::vector<Nif::NiSkinData::VertWeight> &weights = data->bones[i].weights;
//influence.mWeights.reserve(weights.size());
for(size_t j = 0;j < weights.size();j++)
{
std::pair<unsigned short, float> indexWeight = std::make_pair(weights[j].vertex, weights[j].weight);
influence.mWeights.insert(indexWeight);
}
influence.mInvBindMatrix = data->bones[i].trafo.toMatrix();
influence.mBoundSphere = osg::BoundingSpheref(data->bones[i].boundSphereCenter, data->bones[i].boundSphereRadius);
map->mMap.insert(std::make_pair(boneName, influence));
}
rig->setInfluenceMap(map);
geode->addDrawable(rig);
// Add a copy, we will alternate between the two copies every other frame using the FrameSwitch
// This is so we can set the DataVariance as STATIC, giving a huge performance boost
rig->setDataVariance(osg::Object::STATIC);
osg::Geode* geode2 = static_cast<osg::Geode*>(osg::clone(geode.get(), osg::CopyOp::DEEP_COPY_NODES|
osg::CopyOp::DEEP_COPY_DRAWABLES));
osg::ref_ptr<FrameSwitch> frameswitch = new FrameSwitch;
frameswitch->addChild(geode);
frameswitch->addChild(geode2);
parentNode->addChild(frameswitch);
}
osg::BlendFunc::BlendFuncMode getBlendMode(int mode)
{
switch(mode)
{
case 0: return osg::BlendFunc::ONE;
case 1: return osg::BlendFunc::ZERO;
case 2: return osg::BlendFunc::SRC_COLOR;
case 3: return osg::BlendFunc::ONE_MINUS_SRC_COLOR;
case 4: return osg::BlendFunc::DST_COLOR;
case 5: return osg::BlendFunc::ONE_MINUS_DST_COLOR;
case 6: return osg::BlendFunc::SRC_ALPHA;
case 7: return osg::BlendFunc::ONE_MINUS_SRC_ALPHA;
case 8: return osg::BlendFunc::DST_ALPHA;
case 9: return osg::BlendFunc::ONE_MINUS_DST_ALPHA;
case 10: return osg::BlendFunc::SRC_ALPHA_SATURATE;
default:
std::cerr<< "Unexpected blend mode: "<< mode << " in " << mFilename << std::endl;
return osg::BlendFunc::SRC_ALPHA;
}
}
osg::AlphaFunc::ComparisonFunction getTestMode(int mode)
{
switch (mode)
{
case 0: return osg::AlphaFunc::ALWAYS;
case 1: return osg::AlphaFunc::LESS;
case 2: return osg::AlphaFunc::EQUAL;
case 3: return osg::AlphaFunc::LEQUAL;
case 4: return osg::AlphaFunc::GREATER;
case 5: return osg::AlphaFunc::NOTEQUAL;
case 6: return osg::AlphaFunc::GEQUAL;
case 7: return osg::AlphaFunc::NEVER;
default:
std::cerr << "Unexpected blend mode: " << mode << " in " << mFilename << std::endl;
return osg::AlphaFunc::LEQUAL;
}
}
osg::Stencil::Function getStencilFunction(int func)
{
switch (func)
{
case 0: return osg::Stencil::NEVER;
case 1: return osg::Stencil::LESS;
case 2: return osg::Stencil::EQUAL;
case 3: return osg::Stencil::LEQUAL;
case 4: return osg::Stencil::GREATER;
case 5: return osg::Stencil::NOTEQUAL;
case 6: return osg::Stencil::GEQUAL;
case 7: return osg::Stencil::NEVER; // NifSkope says this is GL_ALWAYS, but in MW it's GL_NEVER
default:
std::cerr << "Unexpected stencil function: " << func << " in " << mFilename << std::endl;
return osg::Stencil::NEVER;
}
}
osg::Stencil::Operation getStencilOperation(int op)
{
switch (op)
{
case 0: return osg::Stencil::KEEP;
case 1: return osg::Stencil::ZERO;
case 2: return osg::Stencil::REPLACE;
case 3: return osg::Stencil::INCR;
case 4: return osg::Stencil::DECR;
case 5: return osg::Stencil::INVERT;
default:
std::cerr << "Unexpected stencil operation: " << op << " in " << mFilename << std::endl;
return osg::Stencil::KEEP;
}
}
void handleProperty(const Nif::Property *property,
osg::Node *node, SceneUtil::CompositeStateSetUpdater* composite, Resource::TextureManager* textureManager, std::vector<int>& boundTextures, int animflags)
{
switch (property->recType)
{
case Nif::RC_NiStencilProperty:
{
const Nif::NiStencilProperty* stencilprop = static_cast<const Nif::NiStencilProperty*>(property);
osg::FrontFace* frontFace = new osg::FrontFace;
switch (stencilprop->data.drawMode)
{
case 1:
frontFace->setMode(osg::FrontFace::CLOCKWISE);
break;
case 0:
case 2:
default:
frontFace->setMode(osg::FrontFace::COUNTER_CLOCKWISE);
break;
}
osg::StateSet* stateset = node->getOrCreateStateSet();
stateset->setAttribute(frontFace, osg::StateAttribute::ON);
stateset->setMode(GL_CULL_FACE, stencilprop->data.drawMode == 3 ? osg::StateAttribute::OFF
: osg::StateAttribute::ON);
if (stencilprop->data.enabled != 0)
{
osg::Stencil* stencil = new osg::Stencil;
stencil->setFunction(getStencilFunction(stencilprop->data.compareFunc), stencilprop->data.stencilRef, stencilprop->data.stencilMask);
stencil->setStencilFailOperation(getStencilOperation(stencilprop->data.failAction));
stencil->setStencilPassAndDepthFailOperation(getStencilOperation(stencilprop->data.zFailAction));
stencil->setStencilPassAndDepthPassOperation(getStencilOperation(stencilprop->data.zPassAction));
stateset->setAttributeAndModes(stencil, osg::StateAttribute::ON);
}
break;
}
case Nif::RC_NiWireframeProperty:
{
const Nif::NiWireframeProperty* wireprop = static_cast<const Nif::NiWireframeProperty*>(property);
osg::PolygonMode* mode = new osg::PolygonMode;
mode->setMode(osg::PolygonMode::FRONT_AND_BACK, wireprop->flags == 0 ? osg::PolygonMode::FILL
: osg::PolygonMode::LINE);
node->getOrCreateStateSet()->setAttributeAndModes(mode, osg::StateAttribute::ON);
break;
}
case Nif::RC_NiZBufferProperty:
{
const Nif::NiZBufferProperty* zprop = static_cast<const Nif::NiZBufferProperty*>(property);
// VER_MW doesn't support a DepthFunction according to NifSkope
osg::Depth* depth = new osg::Depth;
depth->setWriteMask((zprop->flags>>1)&1);
node->getOrCreateStateSet()->setAttributeAndModes(depth, osg::StateAttribute::ON);
break;
}
// OSG groups the material properties that NIFs have separate, so we have to parse them all again when one changed
case Nif::RC_NiMaterialProperty:
case Nif::RC_NiVertexColorProperty:
case Nif::RC_NiSpecularProperty:
{
// Handled in handleTriShape so we know whether vertex colors are available
break;
}
case Nif::RC_NiAlphaProperty:
{
const Nif::NiAlphaProperty* alphaprop = static_cast<const Nif::NiAlphaProperty*>(property);
osg::BlendFunc* blendfunc = new osg::BlendFunc;
osg::StateSet* stateset = node->getOrCreateStateSet();
if (alphaprop->flags&1)
{
blendfunc->setFunction(getBlendMode((alphaprop->flags>>1)&0xf),
getBlendMode((alphaprop->flags>>5)&0xf));
stateset->setAttributeAndModes(blendfunc, osg::StateAttribute::ON);
bool noSort = (alphaprop->flags>>13)&1;
if (!noSort)
{
stateset->setNestRenderBins(false);
stateset->setRenderingHint(osg::StateSet::TRANSPARENT_BIN);
}
}
else
{
stateset->setAttributeAndModes(blendfunc, osg::StateAttribute::OFF);
stateset->setNestRenderBins(false);
stateset->setRenderingHint(osg::StateSet::OPAQUE_BIN);
}
osg::AlphaFunc* alphafunc = new osg::AlphaFunc;
if((alphaprop->flags>>9)&1)
{
alphafunc->setFunction(getTestMode((alphaprop->flags>>10)&0x7), alphaprop->data.threshold/255.f);
stateset->setAttributeAndModes(alphafunc, osg::StateAttribute::ON);
}
else
stateset->setAttributeAndModes(alphafunc, osg::StateAttribute::OFF);
break;
}
case Nif::RC_NiTexturingProperty:
{
const Nif::NiTexturingProperty* texprop = static_cast<const Nif::NiTexturingProperty*>(property);
osg::StateSet* stateset = node->getOrCreateStateSet();
if (boundTextures.size())
{
// overriding a parent NiTexturingProperty, so remove what was previously bound
for (unsigned int i=0; i<boundTextures.size(); ++i)
stateset->setTextureMode(i, GL_TEXTURE_2D, osg::StateAttribute::OFF);
boundTextures.clear();
}
for (int i=0; i<Nif::NiTexturingProperty::NumTextures; ++i)
{
if (texprop->textures[i].inUse)
{
if (i != Nif::NiTexturingProperty::BaseTexture
&& i != Nif::NiTexturingProperty::GlowTexture
&& i != Nif::NiTexturingProperty::DarkTexture
&& i != Nif::NiTexturingProperty::DetailTexture)
{
std::cerr << "Warning: unhandled texture stage " << i << " in " << mFilename << std::endl;
continue;
}
const Nif::NiTexturingProperty::Texture& tex = texprop->textures[i];
if(tex.texture.empty())
{
std::cerr << "Warning: texture layer " << i << " is in use but empty in " << mFilename << std::endl;
continue;
}
const Nif::NiSourceTexture *st = tex.texture.getPtr();
if (!st->external)
{
std::cerr << "Warning: unhandled internal texture in " << mFilename << std::endl;
continue;
}
std::string filename = Misc::ResourceHelpers::correctTexturePath(st->filename, textureManager->getVFS());
unsigned int clamp = static_cast<unsigned int>(tex.clamp);
int wrapT = (clamp) & 0x1;
int wrapS = (clamp >> 1) & 0x1;
osg::Texture2D* texture2d = textureManager->getTexture2D(filename,
wrapS ? osg::Texture::REPEAT : osg::Texture::CLAMP,
wrapT ? osg::Texture::REPEAT : osg::Texture::CLAMP);
int texUnit = boundTextures.size();
stateset->setTextureAttributeAndModes(texUnit, texture2d, osg::StateAttribute::ON);
if (i == Nif::NiTexturingProperty::GlowTexture)
{
osg::TexEnvCombine* texEnv = new osg::TexEnvCombine;
texEnv->setCombine_Alpha(osg::TexEnvCombine::REPLACE);
texEnv->setSource0_Alpha(osg::TexEnvCombine::PREVIOUS);
texEnv->setCombine_RGB(osg::TexEnvCombine::ADD);
texEnv->setSource0_RGB(osg::TexEnvCombine::PREVIOUS);
texEnv->setSource1_RGB(osg::TexEnvCombine::TEXTURE);
stateset->setTextureAttributeAndModes(texUnit, texEnv, osg::StateAttribute::ON);
}
else if (i == Nif::NiTexturingProperty::DarkTexture)
{
osg::TexEnv* texEnv = new osg::TexEnv;
texEnv->setMode(osg::TexEnv::MODULATE);
stateset->setTextureAttributeAndModes(texUnit, texEnv, osg::StateAttribute::ON);
}
else if (i == Nif::NiTexturingProperty::DetailTexture)
{
osg::TexEnvCombine* texEnv = new osg::TexEnvCombine;
texEnv->setScale_RGB(2.f);
texEnv->setCombine_Alpha(GL_MODULATE);
texEnv->setOperand0_Alpha(GL_SRC_ALPHA);
texEnv->setOperand1_Alpha(GL_SRC_ALPHA);
texEnv->setSource0_Alpha(GL_PREVIOUS_ARB);
texEnv->setSource1_Alpha(GL_TEXTURE);
texEnv->setCombine_RGB(GL_MODULATE);
texEnv->setOperand0_RGB(GL_SRC_COLOR);
texEnv->setOperand1_RGB(GL_SRC_COLOR);
texEnv->setSource0_RGB(GL_PREVIOUS_ARB);
texEnv->setSource1_RGB(GL_TEXTURE);
stateset->setTextureAttributeAndModes(texUnit, texEnv, osg::StateAttribute::ON);
}
boundTextures.push_back(tex.uvSet);
}
handleTextureControllers(texprop, composite, textureManager, stateset, animflags);
}
break;
}
// unused by mw
case Nif::RC_NiShadeProperty:
case Nif::RC_NiDitherProperty:
case Nif::RC_NiFogProperty:
{
break;
}
default:
std::cerr << "Unhandled " << property->recName << " in " << mFilename << std::endl;
break;
}
}
void applyMaterialProperties(osg::Node* node, const std::vector<const Nif::Property*>& properties, SceneUtil::CompositeStateSetUpdater* composite,
bool hasVertexColors, int animflags)
{
osg::StateSet* stateset = node->getOrCreateStateSet();
int specFlags = 0; // Specular is disabled by default, even if there's a specular color in the NiMaterialProperty
osg::Material* mat = new osg::Material;
mat->setColorMode(hasVertexColors ? osg::Material::AMBIENT_AND_DIFFUSE : osg::Material::OFF);
// NIF material defaults don't match OpenGL defaults
mat->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4f(1,1,1,1));
mat->setAmbient(osg::Material::FRONT_AND_BACK, osg::Vec4f(1,1,1,1));
for (std::vector<const Nif::Property*>::const_reverse_iterator it = properties.rbegin(); it != properties.rend(); ++it)
{
const Nif::Property* property = *it;
switch (property->recType)
{
case Nif::RC_NiSpecularProperty:
{
specFlags = property->flags;
break;
}
case Nif::RC_NiMaterialProperty:
{
const Nif::NiMaterialProperty* matprop = static_cast<const Nif::NiMaterialProperty*>(property);
mat->setDiffuse(osg::Material::FRONT_AND_BACK, osg::Vec4f(matprop->data.diffuse, matprop->data.alpha));
mat->setAmbient(osg::Material::FRONT_AND_BACK, osg::Vec4f(matprop->data.ambient, 1.f));
mat->setEmission(osg::Material::FRONT_AND_BACK, osg::Vec4f(matprop->data.emissive, 1.f));
mat->setSpecular(osg::Material::FRONT_AND_BACK, osg::Vec4f(matprop->data.specular, 1.f));
mat->setShininess(osg::Material::FRONT_AND_BACK, matprop->data.glossiness);
if (!matprop->controller.empty())
handleMaterialControllers(matprop, composite, animflags);
break;
}
case Nif::RC_NiVertexColorProperty:
{
const Nif::NiVertexColorProperty* vertprop = static_cast<const Nif::NiVertexColorProperty*>(property);
if (!hasVertexColors)
break;
switch (vertprop->flags)
{
case 0:
mat->setColorMode(osg::Material::OFF);
break;
case 1:
mat->setColorMode(osg::Material::EMISSION);
break;
case 2:
mat->setColorMode(osg::Material::AMBIENT_AND_DIFFUSE);
break;
}
}
}
}
if (specFlags == 0)
mat->setSpecular(osg::Material::FRONT_AND_BACK, osg::Vec4f(0.f,0.f,0.f,0.f));
stateset->setAttributeAndModes(mat, osg::StateAttribute::ON);
}
};
osg::ref_ptr<osg::Node> Loader::load(Nif::NIFFilePtr file, Resource::TextureManager* textureManager)
{
LoaderImpl impl(file->getFilename());
return impl.load(file, textureManager);
}
void Loader::loadKf(Nif::NIFFilePtr kf, KeyframeHolder& target)
{
LoaderImpl impl(kf->getFilename());
impl.loadKf(kf, target);
}
}
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