FGFS-4.1/OpenSceneGraph
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Added BufferData::ModifiedCallback to provide a mechanism for tracking when a osg::Image::dirty() has been called to signify that an image has been modified.

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This commit is contained in:
Robert Osfield 2010-04-13 18:42:58 +00:00
parent 8e53cfe6fc
commit c69ddd6bd5
1 changed files with 26 additions and 3 deletions
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29
include/osg/BufferObject
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@ -561,7 +561,8 @@ class OSG_EXPORT BufferData : public Object
BufferData(const BufferData& bd,const CopyOp& copyop=CopyOp::SHALLOW_COPY):
osg::Object(bd,copyop),
_modifiedCount(0),
_bufferIndex(0) {}
_bufferIndex(0),
_modifiedCallback(bd._modifiedCallback) {}
virtual bool isSameKindAs(const Object* obj) const { return dynamic_cast<const BufferData*>(obj)!=NULL; }
virtual const char* libraryName() const { return "osg"; }
@ -580,8 +581,29 @@ class OSG_EXPORT BufferData : public Object
GLBufferObject* getGLBufferObject(unsigned int contextID) const { return _bufferObject.valid() ? _bufferObject->getGLBufferObject(contextID) : 0; }
GLBufferObject* getOrCreateGLBufferObject(unsigned int contextID) const { return _bufferObject.valid() ? _bufferObject->getOrCreateGLBufferObject(contextID) : 0; }
/** Dirty the primitive, which increments the modified count, to force buffer objects to update. */
inline void dirty() { ++_modifiedCount; if (_bufferObject.valid()) _bufferObject->dirty(); }
struct ModifiedCallback : public virtual osg::Object
{
ModifiedCallback() {}
ModifiedCallback(const ModifiedCallback&,const CopyOp&) {}
META_Object(osg,ModifiedCallback);
virtual void modified(BufferData* bufferData) const {}
};
void setModifiedCallback(ModifiedCallback* md) { _modifiedCallback = md; }
ModifiedCallback* getModifiedCallback() { return _modifiedCallback.get(); }
const ModifiedCallback* getModifiedCallback() const { return _modifiedCallback.get(); }
/** Dirty the primitive, which increments the modified count, to force buffer objects to update.
* If a ModifiedCallback is attached to this BufferData then the callback is called prior to the bufferObject's dirty is called. */
inline void dirty()
{
++_modifiedCount;
if (_modifiedCallback.valid()) _modifiedCallback->modified(this);
if (_bufferObject.valid()) _bufferObject->dirty();
}
/** Set the modified count value.*/
inline void setModifiedCount(unsigned int value) { _modifiedCount=value; }
@ -597,6 +619,7 @@ class OSG_EXPORT BufferData : public Object
unsigned int _bufferIndex;
osg::ref_ptr<BufferObject> _bufferObject;
osg::ref_ptr<ModifiedCallback> _modifiedCallback;
};