OpenSceneGraph 3.6.5
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This is the base class for effect techniques. More...
#include <Technique>
Public Member Functions | |
Technique () | |
virtual const char * | techniqueName () |
get the name of this Technique | |
virtual const char * | techniqueDescription () |
get a brief description of this Technique | |
virtual void | getRequiredExtensions (std::vector< std::string > &) const |
collect the GL extension strings which are required for this technique to work properly. | |
virtual bool | validate (osg::State &) const |
tests whether this technique is valid for the current rendering context. | |
int | getNumPasses () const |
get the number of rendering passes defined in this Technique | |
osg::StateSet * | getPassStateSet (int i) |
get the StateSet object associated to the i-th pass | |
const osg::StateSet * | getPassStateSet (int i) const |
get the const StateSet object associated to the i-th pass | |
virtual void | traverse (osg::NodeVisitor &nv, Effect *fx) |
traverse children with multipass if necessary. | |
Public Member Functions inherited from osg::Referenced | |
Referenced () | |
Referenced (bool threadSafeRefUnref) | |
Deprecated, Referenced is now always uses thread safe ref/unref, use default Referenced() constructor instead. | |
Referenced (const Referenced &) | |
Referenced & | operator= (const Referenced &) |
virtual void | setThreadSafeRefUnref (bool) |
Deprecated, Referenced is always theadsafe so there method now has no effect and does not need to be called. | |
bool | getThreadSafeRefUnref () const |
Get whether a mutex is used to ensure ref() and unref() are thread safe. | |
OpenThreads::Mutex * | getRefMutex () const |
Get the mutex used to ensure thread safety of ref()/unref(). | |
int | ref () const |
Increment the reference count by one, indicating that this object has another pointer which is referencing it. | |
int | unref () const |
Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. | |
int | unref_nodelete () const |
Decrement the reference count by one, indicating that a pointer to this object is no longer referencing it. | |
int | referenceCount () const |
Return the number of pointers currently referencing this object. | |
ObserverSet * | getObserverSet () const |
Get the ObserverSet if one is attached, otherwise return NULL. | |
ObserverSet * | getOrCreateObserverSet () const |
Get the ObserverSet if one is attached, otherwise create an ObserverSet, attach it, then return this newly created ObserverSet. | |
void | addObserver (Observer *observer) const |
Add a Observer that is observing this object, notify the Observer when this object gets deleted. | |
void | removeObserver (Observer *observer) const |
Remove Observer that is observing this object. |
Protected Member Functions | |
Technique (const Technique &) | |
virtual | ~Technique () |
Technique & | operator= (const Technique &) |
void | dirtyPasses () |
force rebuilding of pass nodes on next traversal | |
void | addPass (osg::StateSet *ss=0) |
create a new pass node, add it to the technique and associate a StateSet | |
virtual osg::Node * | getOverrideChild (int) |
optional: return a node that overrides the child node on a specified pass | |
virtual void | define_passes ()=0 |
define the rendering passes that make up this technique. | |
void | traverse_implementation (osg::NodeVisitor &nv, Effect *fx) |
traverse children with multipass if necessary. | |
Protected Member Functions inherited from osg::Referenced | |
virtual | ~Referenced () |
void | signalObserversAndDelete (bool signalDelete, bool doDelete) const |
void | deleteUsingDeleteHandler () const |
Additional Inherited Members | |
Static Public Member Functions inherited from osg::Referenced | |
static OpenThreads::Mutex * | getGlobalReferencedMutex () |
Get the optional global Referenced mutex, this can be shared between all osg::Referenced. | |
static void | setDeleteHandler (DeleteHandler *handler) |
Set a DeleteHandler to which deletion of all referenced counted objects will be delegated. | |
static DeleteHandler * | getDeleteHandler () |
Get a DeleteHandler. | |
Protected Attributes inherited from osg::Referenced | |
OpenThreads::AtomicPtr | _observerSet |
OpenThreads::Atomic | _refCount |
This is the base class for effect techniques.
A technique represents one of the possible ways to implement a special effect. This base class is abstract, you will have to subclass your own techniques for your custom effects. Derived classes will have to implement the define_passes() method to configure the rendering pass(es) that make up the technique. Usually you will create one StateSet object for each rendering pass and then you'll call addPass(stateset). The validate() method should return true if the technique is valid within the current rendering context, false otherwise. The default implementation of validate() calls getRequiredExtensions() and tests whether all required extensions are supported or not, returning false if at least one extension is not supported.
osgFX::Technique::Technique | ( | ) |
Referenced by operator=(), and Technique().
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inlineprotected |
References osg::Referenced::Referenced(), and Technique().
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inlineprotectedvirtual |
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protected |
create a new pass node, add it to the technique and associate a StateSet
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protectedpure virtual |
define the rendering passes that make up this technique.
You must implement this method in derived classes to add the required passes.
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inlineprotected |
force rebuilding of pass nodes on next traversal
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inline |
get the number of rendering passes defined in this Technique
Referenced by validate().
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inlineprotectedvirtual |
optional: return a node that overrides the child node on a specified pass
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inline |
get the StateSet object associated to the i-th pass
Referenced by validate().
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inline |
get the const StateSet object associated to the i-th pass
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inlinevirtual |
collect the GL extension strings which are required for this technique to work properly.
This method is called from the default implementation of validate().
References Technique().
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inlinevirtual |
get a brief description of this Technique
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inlinevirtual |
get the name of this Technique
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inlinevirtual |
traverse children with multipass if necessary.
By default this method simply calls the protected method traverse_implementation(); you can override it to change the default behavior. Don't call this method directly as it is called by osgFX::Effect
References traverse_implementation().
Referenced by validate().
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protected |
traverse children with multipass if necessary.
Don't call this method directly unless you are in a customized version of traverse().
Referenced by traverse().
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virtual |
tests whether this technique is valid for the current rendering context.
The default behavior is to call getRequiredExtensions() and check for extension availability.
References getNumPasses(), getPassStateSet(), and traverse().
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