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Open Inventor Release 2024.2.1
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Open Inventor Release 2024.2.1
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Provides custom OpenGL behavior during rendering actions. More...
#include <Inventor/nodes/SoGLCallback.h>
Inheritance diagram for SoGLCallback:Public Member Functions | |
| virtual SoType | getTypeId () const |
| Returns the type identifier for this specific instance. | |
| SoGLCallback () | |
| Constructor. | |
| Public Member Functions inherited from SoCallback | |
| SoCallback () | |
| Creates a callback node with default settings. | |
| void | setCallback (SoCallbackCB *func, void *localUserData=NULL) |
| Sets pointer to callback function and user data. | |
| Public Member Functions inherited from SoNode | |
| virtual void | setOverride (const SbBool state) |
| Turns the override flag on or off. | |
| virtual SbBool | isOverride () const |
| Returns the state of the override flag. | |
| virtual SoNode * | copy (SbBool copyConnections=FALSE) const |
| Creates and returns an exact copy of the node. | |
| virtual SbBool | affectsState () const |
| Returns TRUE if a node has an effect on the state during traversal. | |
| virtual void | touch () |
| Marks an instance as modified, simulating a change to it. | |
| Public Member Functions inherited from SoFieldContainer | |
| void | setToDefaults () |
| Sets all fields in this object to their default values. | |
| SbBool | hasDefaultValues () const |
| Returns TRUE if all of the object's fields have their default values. | |
| SbBool | fieldsAreEqual (const SoFieldContainer *fc) const |
| Returns TRUE if this object's fields are exactly equal to fc's fields. | |
| void | copyFieldValues (const SoFieldContainer *fc, SbBool copyConnections=FALSE) |
| Copies the contents of fc's fields into this object's fields. | |
| SoNONUNICODE SbBool | set (const char *fieldDataString) |
| Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
| SbBool | set (const SbString &fieldDataString) |
| Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
| void | get (SbString &fieldDataString) |
| Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. | |
| virtual int | getFields (SoFieldList &list) const |
| Appends references to all of this object's fields to resultList, and returns the number of fields appended. | |
| virtual int | getAllFields (SoFieldList &list) const |
| Returns a list of fields, including the eventIn's and eventOut's. | |
| virtual SoField * | getField (const SbName &fieldName) const |
| Returns a the field of this object whose name is fieldName. | |
| virtual SoField * | getEventIn (const SbName &fieldName) const |
| Returns a the eventIn with the given name. | |
| virtual SoField * | getEventOut (const SbName &fieldName) const |
| Returns the eventOut with the given name. | |
| SbBool | getFieldName (const SoField *field, SbName &fieldName) const |
| Returns the name of the given field in the fieldName argument. | |
| SbBool | enableNotify (SbBool flag) |
| Notification at this Field Container is enabled (if flag == TRUE) or disabled (if flag == FALSE). | |
| SbBool | isNotifyEnabled () const |
| Notification is the process of telling interested objects that this object has changed. | |
| virtual void | setUserData (void *data) |
| Sets application data. | |
| void * | getUserData (void) const |
| Gets user application data. | |
| Public Member Functions inherited from SoBase | |
| virtual SbName | getName () const |
| Returns the name of an instance. | |
| virtual void | setName (const SbName &name) |
| Sets the name of an instance. | |
| void | setSynchronizable (const bool b) |
| Sets this to be a ScaleViz synchronizable object. | |
| bool | isSynchronizable () const |
| Gets the ScaleViz synchronizable state of this object. | |
| Public Member Functions inherited from SoRefCounter | |
| void | ref () const |
| Adds a reference to an instance. | |
| void | unref () const |
| Removes a reference from an instance. | |
| void | unrefNoDelete () const |
| unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero. | |
| int | getRefCount () const |
| Returns current reference count. | |
| void | lock () const |
| lock this instance. | |
| void | unlock () const |
| unlock this instance. | |
| Public Member Functions inherited from SoTypedObject | |
| SbBool | isOfType (const SoType &type) const |
| Returns TRUE if this object is of the type specified in type or is derived from that type. | |
| template<typename TypedObjectClass > | |
| SbBool | isOfType () const |
| Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class. | |
Static Public Member Functions | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| Static Public Member Functions inherited from SoCallback | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| Static Public Member Functions inherited from SoNode | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
| static SoNode * | getByName (const SbName &name) |
| A node's name can be set using SoBase::setName(). | |
| static int | getByName (const SbName &name, SoNodeList &list) |
| A node's name can be set using SoBase::setName(). | |
| Static Public Member Functions inherited from SoFieldContainer | |
| static SoType | getClassTypeId () |
| Returns the type of this class. | |
| Static Public Member Functions inherited from SoBase | |
| static SoType | getClassTypeId () |
| Returns type identifier for this class. | |
| Static Public Member Functions inherited from SoTypedObject | |
| static SoType | getClassTypeId () |
| Returns the type identifier for this class. | |
Additional Inherited Members | |
| Public Types inherited from SoCallback | |
| typedef void | SoCallbackCB(void *userData, SoAction *action) |
| Callback functions registered with this node should be of this type. | |
Provides custom OpenGL behavior during rendering actions.
This node behaves exactly like an SoCallback except... the SoGLCallback node allows the application to make OpenGL calls during a render traversal. It is normally used to make OpenGL rendering calls (and any state setting calls needed for rendering).
SoGLCallback automatically calls glPushAttrib() to save the OpenGL state before executing the callback and then calls glPopAttrib() (restore) after executing the callback, ensuring that OpenGL state cannot leak outside the node.
Please note that this means an SoGLCallback node cannot modify the OpenGL state used for Open Inventor rendering. (This is a change since Open Inventor 10.0) You must use standard Open Inventor nodes to modify state for Open Inventor rendering. For example, use an SoViewport node to change the OpenGL viewport, use the SoDepthBuffer node to change the OpenGL depth buffer test and so on.
You can use this node to get values from the Open Inventor traversal state list using the SoElement classes. For example, SoLineWidthElement contains the current line width set by an SoDrawStyle node.
This node should not be used to do Open Inventor rendering. Open Inventor rendering calls should only be done using an SoCallBack node.
There is some "overhead" for rendering using SoGLCallback instead of Open Inventor nodes. Normal Open Inventor rendering is optimized in various ways to maximize GPU performance and to keep the GPU "busy". When an SoGLCallback node is traversed, Open Inventor must finish all current rendering, execute the application's OpenGL calls, then resume normal rendering.
Create the node:
Create the Callback:
The callback function registered with the node will only be executed during SoGLRenderAction traversal, as calling OpenGL functions requires a current OpenGL context.
SoAction, SoCallback, SoCallbackAction, SoEventCallback
NOTE: node available since Open Inventor 10.0
Definition at line 155 of file SoGLCallback.h.
| SoGLCallback::SoGLCallback | ( | ) |
Constructor.
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static |
Returns the type identifier for this class.
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virtual |
Returns the type identifier for this specific instance.
Reimplemented from SoCallback.
1.9.8 